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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 1.256 by root, Sat Nov 8 13:32:18 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 */
57static int cctx_max_idle = 4;
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"
91 145
92#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93
94#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
95static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
96# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
97# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD
152static void *coro_thx;
153# endif
154
98#else 155#else
156
99# define LOCK (void)0 157# define LOCK (void)0
100# define UNLOCK (void)0 158# define UNLOCK (void)0
101#endif
102 159
160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE;
103static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
104static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env;
105static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
106static SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186
187static GV *irsgv; /* $/ */
188static GV *stdoutgv; /* *STDOUT */
189static SV *rv_diehook;
190static SV *rv_warnhook;
191static HV *hv_sig; /* %SIG */
192
193/* async_pool helper stuff */
194static SV *sv_pool_rss;
195static SV *sv_pool_size;
196static AV *av_async_pool;
197
198/* Coro::AnyEvent */
199static SV *sv_activity;
107 200
108static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
109static int cctx_count, cctx_idle; 202static int cctx_count, cctx_idle;
203
204enum {
205 CC_MAPPED = 0x01,
206 CC_NOREUSE = 0x02, /* throw this away after tracing */
207 CC_TRACE = 0x04,
208 CC_TRACE_SUB = 0x08, /* trace sub calls */
209 CC_TRACE_LINE = 0x10, /* trace each statement */
210 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
211};
110 212
111/* this is a structure representing a c-level coroutine */ 213/* this is a structure representing a c-level coroutine */
112typedef struct coro_cctx { 214typedef struct coro_cctx {
113 struct coro_cctx *next; 215 struct coro_cctx *next;
114 216
115 /* the stack */ 217 /* the stack */
116 void *sptr; 218 void *sptr;
117 long ssize; /* positive == mmap, otherwise malloc */ 219 size_t ssize;
118 220
119 /* cpu state */ 221 /* cpu state */
120 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
121 JMPENV *top_env; 224 JMPENV *top_env;
122 coro_context cctx; 225 coro_context cctx;
123 226
124 int inuse; 227 U32 gen;
125
126#if USE_VALGRIND 228#if CORO_USE_VALGRIND
127 int valgrind_id; 229 int valgrind_id;
128#endif 230#endif
231 unsigned char flags;
129} coro_cctx; 232} coro_cctx;
130 233
131enum { 234enum {
132 CF_RUNNING, /* coroutine is running */ 235 CF_RUNNING = 0x0001, /* coroutine is running */
133 CF_READY, /* coroutine is ready */ 236 CF_READY = 0x0002, /* coroutine is ready */
237 CF_NEW = 0x0004, /* has never been switched to */
238 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
134}; 239};
240
241/* the structure where most of the perl state is stored, overlaid on the cxstack */
242typedef struct {
243 SV *defsv;
244 AV *defav;
245 SV *errsv;
246 SV *irsgv;
247#define VAR(name,type) type name;
248# include "state.h"
249#undef VAR
250} perl_slots;
251
252#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
135 253
136/* this is a structure representing a perl-level coroutine */ 254/* this is a structure representing a perl-level coroutine */
137struct coro { 255struct coro {
138 /* the c coroutine allocated to this perl coroutine, if any */ 256 /* the c coroutine allocated to this perl coroutine, if any */
139 coro_cctx *cctx; 257 coro_cctx *cctx;
140 258
259 /* process data */
260 AV *mainstack;
261 perl_slots *slot; /* basically the saved sp */
262
141 /* data associated with this coroutine (initial args) */ 263 AV *args; /* data associated with this coroutine (initial args) */
142 AV *args; 264 int refcnt; /* coroutines are refcounted, yes */
143 int refcnt; 265 int flags; /* CF_ flags */
144 int flags; 266 HV *hv; /* the perl hash associated with this coro, if any */
145 267
146 /* optionally saved, might be zero */ 268 /* statistics */
147 AV *defav; 269 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
154 270
155 /* coro process data */ 271 /* coro process data */
156 int prio; 272 int prio;
273 SV *throw; /* exception to be thrown */
274
275 /* async_pool */
276 SV *saved_deffh;
277
278 /* linked list */
279 struct coro *next, *prev;
157}; 280};
158 281
159typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
160typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
161 284
285/** Coro ********************************************************************/
286
287#define PRIO_MAX 3
288#define PRIO_HIGH 1
289#define PRIO_NORMAL 0
290#define PRIO_LOW -1
291#define PRIO_IDLE -3
292#define PRIO_MIN -4
293
294/* for Coro.pm */
295static SV *coro_current;
296static SV *coro_readyhook;
297static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
298static int coro_nready;
299static struct coro *coro_first;
300
301/** lowlevel stuff **********************************************************/
302
303static SV *
304coro_get_sv (pTHX_ const char *name, int create)
305{
306#if PERL_VERSION_ATLEAST (5,10,0)
307 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
308 get_sv (name, create);
309#endif
310 return get_sv (name, create);
311}
312
162static AV * 313static AV *
314coro_get_av (pTHX_ const char *name, int create)
315{
316#if PERL_VERSION_ATLEAST (5,10,0)
317 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
318 get_av (name, create);
319#endif
320 return get_av (name, create);
321}
322
323static HV *
324coro_get_hv (pTHX_ const char *name, int create)
325{
326#if PERL_VERSION_ATLEAST (5,10,0)
327 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
328 get_hv (name, create);
329#endif
330 return get_hv (name, create);
331}
332
333static AV *
163coro_clone_padlist (CV *cv) 334coro_clone_padlist (pTHX_ CV *cv)
164{ 335{
165 AV *padlist = CvPADLIST (cv); 336 AV *padlist = CvPADLIST (cv);
166 AV *newpadlist, *newpad; 337 AV *newpadlist, *newpad;
167 338
168 newpadlist = newAV (); 339 newpadlist = newAV ();
169 AvREAL_off (newpadlist); 340 AvREAL_off (newpadlist);
170#if PERL_VERSION_ATLEAST (5,9,0) 341#if PERL_VERSION_ATLEAST (5,10,0)
171 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 342 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
172#else 343#else
173 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 344 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
174#endif 345#endif
175 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 346 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176 --AvFILLp (padlist); 347 --AvFILLp (padlist);
177 348
178 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 349 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
179 av_store (newpadlist, 1, (SV *)newpad); 350 av_store (newpadlist, 1, (SV *)newpad);
180 351
181 return newpadlist; 352 return newpadlist;
182} 353}
183 354
184static void 355static void
185free_padlist (AV *padlist) 356free_padlist (pTHX_ AV *padlist)
186{ 357{
187 /* may be during global destruction */ 358 /* may be during global destruction */
188 if (SvREFCNT (padlist)) 359 if (SvREFCNT (padlist))
189 { 360 {
190 I32 i = AvFILLp (padlist); 361 I32 i = AvFILLp (padlist);
… …
211 AV *padlist; 382 AV *padlist;
212 AV *av = (AV *)mg->mg_obj; 383 AV *av = (AV *)mg->mg_obj;
213 384
214 /* casting is fun. */ 385 /* casting is fun. */
215 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 386 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
216 free_padlist (padlist); 387 free_padlist (aTHX_ padlist);
217 388
218 SvREFCNT_dec (av); 389 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
219 390
220 return 0; 391 return 0;
221} 392}
222 393
223#define PERL_MAGIC_coro PERL_MAGIC_ext 394#define CORO_MAGIC_type_cv PERL_MAGIC_ext
395#define CORO_MAGIC_type_state PERL_MAGIC_ext
224 396
225static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 397static MGVTBL coro_cv_vtbl = {
398 0, 0, 0, 0,
399 coro_cv_free
400};
226 401
227#define CORO_MAGIC(cv) \ 402#define CORO_MAGIC(sv, type) \
228 SvMAGIC (cv) \ 403 SvMAGIC (sv) \
229 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 404 ? SvMAGIC (sv)->mg_type == type \
230 ? SvMAGIC (cv) \ 405 ? SvMAGIC (sv) \
231 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 406 : mg_find (sv, type) \
232 : 0 407 : 0
408
409#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
410#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
411
412static struct coro *
413SvSTATE_ (pTHX_ SV *coro)
414{
415 HV *stash;
416 MAGIC *mg;
417
418 if (SvROK (coro))
419 coro = SvRV (coro);
420
421 if (expect_false (SvTYPE (coro) != SVt_PVHV))
422 croak ("Coro::State object required");
423
424 stash = SvSTASH (coro);
425 if (expect_false (stash != coro_stash && stash != coro_state_stash))
426 {
427 /* very slow, but rare, check */
428 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
429 croak ("Coro::State object required");
430 }
431
432 mg = CORO_MAGIC_state (coro);
433 return (struct coro *)mg->mg_ptr;
434}
435
436#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
233 437
234/* the next two functions merely cache the padlists */ 438/* the next two functions merely cache the padlists */
235static void 439static void
236get_padlist (CV *cv) 440get_padlist (pTHX_ CV *cv)
237{ 441{
238 MAGIC *mg = CORO_MAGIC (cv); 442 MAGIC *mg = CORO_MAGIC_cv (cv);
239 AV *av; 443 AV *av;
240 444
241 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 445 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
242 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 446 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243 else 447 else
244 { 448 {
245#if 0 449#if CORO_PREFER_PERL_FUNCTIONS
246 /* this is probably cleaner, but also slower? */ 450 /* this is probably cleaner? but also slower! */
451 /* in practise, it seems to be less stable */
247 CV *cp = Perl_cv_clone (cv); 452 CV *cp = Perl_cv_clone (cv);
248 CvPADLIST (cv) = CvPADLIST (cp); 453 CvPADLIST (cv) = CvPADLIST (cp);
249 CvPADLIST (cp) = 0; 454 CvPADLIST (cp) = 0;
250 SvREFCNT_dec (cp); 455 SvREFCNT_dec (cp);
251#else 456#else
252 CvPADLIST (cv) = coro_clone_padlist (cv); 457 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253#endif 458#endif
254 } 459 }
255} 460}
256 461
257static void 462static void
258put_padlist (CV *cv) 463put_padlist (pTHX_ CV *cv)
259{ 464{
260 MAGIC *mg = CORO_MAGIC (cv); 465 MAGIC *mg = CORO_MAGIC_cv (cv);
261 AV *av; 466 AV *av;
262 467
263 if (!mg) 468 if (expect_false (!mg))
264 { 469 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 }
270 470
271 av = (AV *)mg->mg_obj; 471 av = (AV *)mg->mg_obj;
272 472
273 if (AvFILLp (av) >= AvMAX (av)) 473 if (expect_false (AvFILLp (av) >= AvMAX (av)))
274 av_extend (av, AvMAX (av) + 1); 474 av_extend (av, AvMAX (av) + 1);
275 475
276 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 476 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
277} 477}
278 478
279#define SB do { 479/** 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
286 480
287static void 481static void
288load_state(Coro__State c) 482load_perl (pTHX_ Coro__State c)
289{ 483{
484 perl_slots *slot = c->slot;
485 c->slot = 0;
486
487 PL_mainstack = c->mainstack;
488
489 GvSV (PL_defgv) = slot->defsv;
490 GvAV (PL_defgv) = slot->defav;
491 GvSV (PL_errgv) = slot->errsv;
492 GvSV (irsgv) = slot->irsgv;
493
290#define VAR(name,type) PL_ ## name = c->name; 494 #define VAR(name,type) PL_ ## name = slot->name;
291# include "state.h" 495 # include "state.h"
292#undef VAR 496 #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);
297 497
298 { 498 {
299 dSP; 499 dSP;
500
300 CV *cv; 501 CV *cv;
301 502
302 /* now do the ugly restore mess */ 503 /* now do the ugly restore mess */
303 while ((cv = (CV *)POPs)) 504 while (expect_true (cv = (CV *)POPs))
304 { 505 {
305 put_padlist (cv); /* mark this padlist as available */ 506 put_padlist (aTHX_ cv); /* mark this padlist as available */
306 CvDEPTH (cv) = PTR2IV (POPs); 507 CvDEPTH (cv) = PTR2IV (POPs);
307 CvPADLIST (cv) = (AV *)POPs; 508 CvPADLIST (cv) = (AV *)POPs;
308 } 509 }
309 510
310 PUTBACK; 511 PUTBACK;
311 } 512 }
312} 513}
313 514
314static void 515static void
315save_state(Coro__State c, int flags) 516save_perl (pTHX_ Coro__State c)
316{ 517{
317 { 518 {
318 dSP; 519 dSP;
319 I32 cxix = cxstack_ix; 520 I32 cxix = cxstack_ix;
320 PERL_CONTEXT *ccstk = cxstack; 521 PERL_CONTEXT *ccstk = cxstack;
… …
323 /* 524 /*
324 * the worst thing you can imagine happens first - we have to save 525 * the worst thing you can imagine happens first - we have to save
325 * (and reinitialize) all cv's in the whole callchain :( 526 * (and reinitialize) all cv's in the whole callchain :(
326 */ 527 */
327 528
328 PUSHs (Nullsv); 529 XPUSHs (Nullsv);
329 /* this loop was inspired by pp_caller */ 530 /* this loop was inspired by pp_caller */
330 for (;;) 531 for (;;)
331 { 532 {
332 while (cxix >= 0) 533 while (expect_true (cxix >= 0))
333 { 534 {
334 PERL_CONTEXT *cx = &ccstk[cxix--]; 535 PERL_CONTEXT *cx = &ccstk[cxix--];
335 536
336 if (CxTYPE(cx) == CXt_SUB) 537 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
337 { 538 {
338 CV *cv = cx->blk_sub.cv; 539 CV *cv = cx->blk_sub.cv;
339 540
340 if (CvDEPTH (cv)) 541 if (expect_true (CvDEPTH (cv)))
341 { 542 {
342 EXTEND (SP, 3); 543 EXTEND (SP, 3);
343
344 PUSHs ((SV *)CvPADLIST(cv)); 544 PUSHs ((SV *)CvPADLIST (cv));
345 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 545 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
346 PUSHs ((SV *)cv); 546 PUSHs ((SV *)cv);
347 547
348 CvDEPTH (cv) = 0; 548 CvDEPTH (cv) = 0;
349 get_padlist (cv); 549 get_padlist (aTHX_ cv);
350 } 550 }
351 } 551 }
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 } 552 }
361 553
362 if (top_si->si_type == PERLSI_MAIN) 554 if (expect_true (top_si->si_type == PERLSI_MAIN))
363 break; 555 break;
364 556
365 top_si = top_si->si_prev; 557 top_si = top_si->si_prev;
366 ccstk = top_si->si_cxstack; 558 ccstk = top_si->si_cxstack;
367 cxix = top_si->si_cxix; 559 cxix = top_si->si_cxix;
368 } 560 }
369 561
370 PUTBACK; 562 PUTBACK;
371 } 563 }
372 564
373 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 565 /* allocate some space on the context stack for our purposes */
374 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 566 /* we manually unroll here, as usually 2 slots is enough */
375 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 567 if (SLOT_COUNT >= 1) CXINC;
568 if (SLOT_COUNT >= 2) CXINC;
569 if (SLOT_COUNT >= 3) CXINC;
570 {
571 int i;
572 for (i = 3; i < SLOT_COUNT; ++i)
573 CXINC;
574 }
575 cxstack_ix -= SLOT_COUNT; /* undo allocation */
376 576
577 c->mainstack = PL_mainstack;
578
579 {
580 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
581
582 slot->defav = GvAV (PL_defgv);
583 slot->defsv = DEFSV;
584 slot->errsv = ERRSV;
585 slot->irsgv = GvSV (irsgv);
586
377#define VAR(name,type)c->name = PL_ ## name; 587 #define VAR(name,type) slot->name = PL_ ## name;
378# include "state.h" 588 # include "state.h"
379#undef VAR 589 #undef VAR
590 }
380} 591}
381 592
382/* 593/*
383 * allocate various perl stacks. This is an exact copy 594 * allocate various perl stacks. This is an exact copy
384 * of perl.c:init_stacks, except that it uses less memory 595 * of perl.c:init_stacks, except that it uses less memory
385 * on the (sometimes correct) assumption that coroutines do 596 * on the (sometimes correct) assumption that coroutines do
386 * not usually need a lot of stackspace. 597 * not usually need a lot of stackspace.
387 */ 598 */
599#if CORO_PREFER_PERL_FUNCTIONS
600# define coro_init_stacks init_stacks
601#else
388static void 602static void
389coro_init_stacks () 603coro_init_stacks (pTHX)
390{ 604{
391 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 605 PL_curstackinfo = new_stackinfo(32, 8);
392 PL_curstackinfo->si_type = PERLSI_MAIN; 606 PL_curstackinfo->si_type = PERLSI_MAIN;
393 PL_curstack = PL_curstackinfo->si_stack; 607 PL_curstack = PL_curstackinfo->si_stack;
394 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 608 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395 609
396 PL_stack_base = AvARRAY(PL_curstack); 610 PL_stack_base = AvARRAY(PL_curstack);
397 PL_stack_sp = PL_stack_base; 611 PL_stack_sp = PL_stack_base;
398 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 612 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399 613
400 New(50,PL_tmps_stack,96,SV*); 614 New(50,PL_tmps_stack,32,SV*);
401 PL_tmps_floor = -1; 615 PL_tmps_floor = -1;
402 PL_tmps_ix = -1; 616 PL_tmps_ix = -1;
403 PL_tmps_max = 96; 617 PL_tmps_max = 32;
404 618
405 New(54,PL_markstack,16,I32); 619 New(54,PL_markstack,16,I32);
406 PL_markstack_ptr = PL_markstack; 620 PL_markstack_ptr = PL_markstack;
407 PL_markstack_max = PL_markstack + 16; 621 PL_markstack_max = PL_markstack + 16;
408 622
409#ifdef SET_MARK_OFFSET 623#ifdef SET_MARK_OFFSET
410 SET_MARK_OFFSET; 624 SET_MARK_OFFSET;
411#endif 625#endif
412 626
413 New(54,PL_scopestack,16,I32); 627 New(54,PL_scopestack,8,I32);
414 PL_scopestack_ix = 0; 628 PL_scopestack_ix = 0;
415 PL_scopestack_max = 16; 629 PL_scopestack_max = 8;
416 630
417 New(54,PL_savestack,96,ANY); 631 New(54,PL_savestack,24,ANY);
418 PL_savestack_ix = 0; 632 PL_savestack_ix = 0;
419 PL_savestack_max = 96; 633 PL_savestack_max = 24;
420 634
421#if !PERL_VERSION_ATLEAST (5,9,0) 635#if !PERL_VERSION_ATLEAST (5,10,0)
422 New(54,PL_retstack,8,OP*); 636 New(54,PL_retstack,4,OP*);
423 PL_retstack_ix = 0; 637 PL_retstack_ix = 0;
424 PL_retstack_max = 8; 638 PL_retstack_max = 4;
425#endif 639#endif
426} 640}
641#endif
427 642
428/* 643/*
429 * destroy the stacks, the callchain etc... 644 * destroy the stacks, the callchain etc...
430 */ 645 */
431static void 646static void
432coro_destroy_stacks () 647coro_destruct_stacks (pTHX)
433{ 648{
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) 649 while (PL_curstackinfo->si_next)
446 PL_curstackinfo = PL_curstackinfo->si_next; 650 PL_curstackinfo = PL_curstackinfo->si_next;
447 651
448 while (PL_curstackinfo) 652 while (PL_curstackinfo)
449 { 653 {
450 PERL_SI *p = PL_curstackinfo->si_prev; 654 PERL_SI *p = PL_curstackinfo->si_prev;
451 655
452 { /*D*//*remove*/
453 dSP;
454 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455 PUTBACK; /* possibly superfluous */
456 }
457
458 if (!IN_DESTRUCT) 656 if (!IN_DESTRUCT)
459 {
460 dounwind (-1);/*D*//*remove*/
461 SvREFCNT_dec (PL_curstackinfo->si_stack); 657 SvREFCNT_dec (PL_curstackinfo->si_stack);
462 }
463 658
464 Safefree (PL_curstackinfo->si_cxstack); 659 Safefree (PL_curstackinfo->si_cxstack);
465 Safefree (PL_curstackinfo); 660 Safefree (PL_curstackinfo);
466 PL_curstackinfo = p; 661 PL_curstackinfo = p;
467 } 662 }
468 663
469 Safefree (PL_tmps_stack); 664 Safefree (PL_tmps_stack);
470 Safefree (PL_markstack); 665 Safefree (PL_markstack);
471 Safefree (PL_scopestack); 666 Safefree (PL_scopestack);
472 Safefree (PL_savestack); 667 Safefree (PL_savestack);
473#if !PERL_VERSION_ATLEAST (5,9,0) 668#if !PERL_VERSION_ATLEAST (5,10,0)
474 Safefree (PL_retstack); 669 Safefree (PL_retstack);
475#endif 670#endif
476} 671}
477 672
673static size_t
674coro_rss (pTHX_ struct coro *coro)
675{
676 size_t rss = sizeof (*coro);
677
678 if (coro->mainstack)
679 {
680 perl_slots tmp_slot;
681 perl_slots *slot;
682
683 if (coro->flags & CF_RUNNING)
684 {
685 slot = &tmp_slot;
686
687 #define VAR(name,type) slot->name = PL_ ## name;
688 # include "state.h"
689 #undef VAR
690 }
691 else
692 slot = coro->slot;
693
694 if (slot)
695 {
696 rss += sizeof (slot->curstackinfo);
697 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
698 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
699 rss += slot->tmps_max * sizeof (SV *);
700 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
701 rss += slot->scopestack_max * sizeof (I32);
702 rss += slot->savestack_max * sizeof (ANY);
703
704#if !PERL_VERSION_ATLEAST (5,10,0)
705 rss += slot->retstack_max * sizeof (OP *);
706#endif
707 }
708 }
709
710 return rss;
711}
712
713/** coroutine stack handling ************************************************/
714
715static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
716static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
717static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
718
719/* apparently < 5.8.8 */
720#ifndef MgPV_nolen_const
721#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
722 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
723 (const char*)(mg)->mg_ptr)
724#endif
725
726/*
727 * This overrides the default magic get method of %SIG elements.
728 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
729 * and instead of tryign to save and restore the hash elements, we just provide
730 * readback here.
731 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
732 * not expecting this to actually change the hook. This is a potential problem
733 * when a schedule happens then, but we ignore this.
734 */
735static int
736coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
737{
738 const char *s = MgPV_nolen_const (mg);
739
740 if (*s == '_')
741 {
742 SV **svp = 0;
743
744 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
745 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
746
747 if (svp)
748 {
749 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
750 return 0;
751 }
752 }
753
754 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
755}
756
757static int
758coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
759{
760 const char *s = MgPV_nolen_const (mg);
761
762 if (*s == '_')
763 {
764 SV **svp = 0;
765
766 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
767 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
768
769 if (svp)
770 {
771 SV *old = *svp;
772 *svp = 0;
773 SvREFCNT_dec (old);
774 return 0;
775 }
776 }
777
778 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
779}
780
781static int
782coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
783{
784 const char *s = MgPV_nolen_const (mg);
785
786 if (*s == '_')
787 {
788 SV **svp = 0;
789
790 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
791 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
792
793 if (svp)
794 {
795 SV *old = *svp;
796 *svp = newSVsv (sv);
797 SvREFCNT_dec (old);
798 return 0;
799 }
800 }
801
802 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
803}
804
478static void 805static void
479setup_coro (struct coro *coro) 806coro_setup (pTHX_ struct coro *coro)
480{ 807{
481 /* 808 /*
482 * emulate part of the perl startup here. 809 * emulate part of the perl startup here.
483 */ 810 */
484
485 coro_init_stacks (); 811 coro_init_stacks (aTHX);
486 812
813 PL_runops = RUNOPS_DEFAULT;
814 PL_curcop = &PL_compiling;
815 PL_in_eval = EVAL_NULL;
487 PL_curcop = 0; 816 PL_comppad = 0;
488 PL_in_eval = 0;
489 PL_curpm = 0; 817 PL_curpm = 0;
818 PL_curpad = 0;
819 PL_localizing = 0;
820 PL_dirty = 0;
821 PL_restartop = 0;
822#if PERL_VERSION_ATLEAST (5,10,0)
823 PL_parser = 0;
824#endif
825
826 /* recreate the die/warn hooks */
827 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
828 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
829
830 GvSV (PL_defgv) = newSV (0);
831 GvAV (PL_defgv) = coro->args; coro->args = 0;
832 GvSV (PL_errgv) = newSV (0);
833 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
834 PL_rs = newSVsv (GvSV (irsgv));
835 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
490 836
491 { 837 {
492 dSP; 838 dSP;
493 LOGOP myop; 839 LOGOP myop;
494 840
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); 841 Zero (&myop, 1, LOGOP);
502 myop.op_next = Nullop; 842 myop.op_next = Nullop;
503 myop.op_flags = OPf_WANT_VOID; 843 myop.op_flags = OPf_WANT_VOID;
504 844
845 PUSHMARK (SP);
846 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
847 PUTBACK;
505 PL_op = (OP *)&myop; 848 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); 849 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511 SPAGAIN; 850 SPAGAIN;
512
513 ENTER; /* necessary e.g. for dounwind */
514 } 851 }
852
853 /* this newly created coroutine might be run on an existing cctx which most
854 * likely was suspended in set_stacklevel, called from entersub.
855 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
856 * so we ENTER here for symmetry
857 */
858 ENTER;
515} 859}
516 860
517static void 861static void
862coro_destruct (pTHX_ struct coro *coro)
863{
864 if (!IN_DESTRUCT)
865 {
866 /* restore all saved variables and stuff */
867 LEAVE_SCOPE (0);
868 assert (PL_tmps_floor == -1);
869
870 /* free all temporaries */
871 FREETMPS;
872 assert (PL_tmps_ix == -1);
873
874 /* unwind all extra stacks */
875 POPSTACK_TO (PL_mainstack);
876
877 /* unwind main stack */
878 dounwind (-1);
879 }
880
881 SvREFCNT_dec (GvSV (PL_defgv));
882 SvREFCNT_dec (GvAV (PL_defgv));
883 SvREFCNT_dec (GvSV (PL_errgv));
884 SvREFCNT_dec (PL_defoutgv);
885 SvREFCNT_dec (PL_rs);
886 SvREFCNT_dec (GvSV (irsgv));
887
888 SvREFCNT_dec (PL_diehook);
889 SvREFCNT_dec (PL_warnhook);
890
891 SvREFCNT_dec (coro->saved_deffh);
892 SvREFCNT_dec (coro->throw);
893
894 coro_destruct_stacks (aTHX);
895}
896
897static void
518free_coro_mortal () 898free_coro_mortal (pTHX)
519{ 899{
520 if (coro_mortal) 900 if (expect_true (coro_mortal))
521 { 901 {
522 SvREFCNT_dec (coro_mortal); 902 SvREFCNT_dec (coro_mortal);
523 coro_mortal = 0; 903 coro_mortal = 0;
524 } 904 }
525} 905}
526 906
907static int
908runops_trace (pTHX)
909{
910 COP *oldcop = 0;
911 int oldcxix = -2;
912 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
913 coro_cctx *cctx = coro->cctx;
914
915 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
916 {
917 PERL_ASYNC_CHECK ();
918
919 if (cctx->flags & CC_TRACE_ALL)
920 {
921 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
922 {
923 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
924 SV **bot, **top;
925 AV *av = newAV (); /* return values */
926 SV **cb;
927 dSP;
928
929 GV *gv = CvGV (cx->blk_sub.cv);
930 SV *fullname = sv_2mortal (newSV (0));
931 if (isGV (gv))
932 gv_efullname3 (fullname, gv, 0);
933
934 bot = PL_stack_base + cx->blk_oldsp + 1;
935 top = cx->blk_gimme == G_ARRAY ? SP + 1
936 : cx->blk_gimme == G_SCALAR ? bot + 1
937 : bot;
938
939 av_extend (av, top - bot);
940 while (bot < top)
941 av_push (av, SvREFCNT_inc_NN (*bot++));
942
943 PL_runops = RUNOPS_DEFAULT;
944 ENTER;
945 SAVETMPS;
946 EXTEND (SP, 3);
947 PUSHMARK (SP);
948 PUSHs (&PL_sv_no);
949 PUSHs (fullname);
950 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
951 PUTBACK;
952 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
953 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
954 SPAGAIN;
955 FREETMPS;
956 LEAVE;
957 PL_runops = runops_trace;
958 }
959
960 if (oldcop != PL_curcop)
961 {
962 oldcop = PL_curcop;
963
964 if (PL_curcop != &PL_compiling)
965 {
966 SV **cb;
967
968 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
969 {
970 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
971
972 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
973 {
974 runops_proc_t old_runops = PL_runops;
975 dSP;
976 GV *gv = CvGV (cx->blk_sub.cv);
977 SV *fullname = sv_2mortal (newSV (0));
978
979 if (isGV (gv))
980 gv_efullname3 (fullname, gv, 0);
981
982 PL_runops = RUNOPS_DEFAULT;
983 ENTER;
984 SAVETMPS;
985 EXTEND (SP, 3);
986 PUSHMARK (SP);
987 PUSHs (&PL_sv_yes);
988 PUSHs (fullname);
989 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
990 PUTBACK;
991 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
992 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
993 SPAGAIN;
994 FREETMPS;
995 LEAVE;
996 PL_runops = runops_trace;
997 }
998
999 oldcxix = cxstack_ix;
1000 }
1001
1002 if (cctx->flags & CC_TRACE_LINE)
1003 {
1004 dSP;
1005
1006 PL_runops = RUNOPS_DEFAULT;
1007 ENTER;
1008 SAVETMPS;
1009 EXTEND (SP, 3);
1010 PL_runops = RUNOPS_DEFAULT;
1011 PUSHMARK (SP);
1012 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1013 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1014 PUTBACK;
1015 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1016 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1017 SPAGAIN;
1018 FREETMPS;
1019 LEAVE;
1020 PL_runops = runops_trace;
1021 }
1022 }
1023 }
1024 }
1025 }
1026
1027 TAINT_NOT;
1028 return 0;
1029}
1030
1031/* inject a fake call to Coro::State::_cctx_init into the execution */
1032/* _cctx_init should be careful, as it could be called at almost any time */
1033/* during execution of a perl program */
527static void NOINLINE 1034static void NOINLINE
528prepare_cctx (coro_cctx *cctx) 1035cctx_prepare (pTHX_ coro_cctx *cctx)
529{ 1036{
530 dSP; 1037 dSP;
531 LOGOP myop; 1038 LOGOP myop;
532 1039
1040 PL_top_env = &PL_start_env;
1041
1042 if (cctx->flags & CC_TRACE)
1043 PL_runops = runops_trace;
1044
533 Zero (&myop, 1, LOGOP); 1045 Zero (&myop, 1, LOGOP);
534 myop.op_next = PL_op; 1046 myop.op_next = PL_op;
535 myop.op_flags = OPf_WANT_VOID; 1047 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
536
537 sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538 1048
539 PUSHMARK (SP); 1049 PUSHMARK (SP);
1050 EXTEND (SP, 2);
1051 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540 XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1052 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541 PUTBACK; 1053 PUTBACK;
1054 PL_op = (OP *)&myop;
542 PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); 1055 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543 SPAGAIN; 1056 SPAGAIN;
544} 1057}
545 1058
1059/*
1060 * this is a _very_ stripped down perl interpreter ;)
1061 */
546static void 1062static void
547coro_run (void *arg) 1063cctx_run (void *arg)
548{ 1064{
549 /* coro_run is the alternative epilogue of transfer() */ 1065#ifdef USE_ITHREADS
1066# if CORO_PTHREAD
1067 PERL_SET_CONTEXT (coro_thx);
1068# endif
1069#endif
1070 {
1071 dTHX;
1072
1073 /* cctx_run is the alternative tail of transfer(), so unlock here. */
550 UNLOCK; 1074 UNLOCK;
551 1075
552 /* 1076 /* we now skip the entersub that lead to transfer() */
553 * this is a _very_ stripped down perl interpreter ;) 1077 PL_op = PL_op->op_next;
554 */
555 PL_top_env = &PL_start_env;
556 1078
557 /* inject call to cctx_init */ 1079 /* inject a fake subroutine call to cctx_init */
558 prepare_cctx ((coro_cctx *)arg); 1080 cctx_prepare (aTHX_ (coro_cctx *)arg);
559 1081
560 /* somebody will hit me for both perl_run and PL_restartop */ 1082 /* somebody or something will hit me for both perl_run and PL_restartop */
1083 PL_restartop = PL_op;
561 perl_run (PL_curinterp); 1084 perl_run (PL_curinterp);
562 1085
563 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1086 /*
564 abort (); 1087 * If perl-run returns we assume exit() was being called or the coro
1088 * fell off the end, which seems to be the only valid (non-bug)
1089 * reason for perl_run to return. We try to exit by jumping to the
1090 * bootstrap-time "top" top_env, as we cannot restore the "main"
1091 * coroutine as Coro has no such concept
1092 */
1093 PL_top_env = main_top_env;
1094 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1095 }
565} 1096}
566 1097
567static coro_cctx * 1098static coro_cctx *
568cctx_new () 1099cctx_new ()
569{ 1100{
570 coro_cctx *cctx; 1101 coro_cctx *cctx;
1102 void *stack_start;
1103 size_t stack_size;
571 1104
572 ++cctx_count; 1105 ++cctx_count;
573
574 New (0, cctx, 1, coro_cctx); 1106 Newz (0, cctx, 1, coro_cctx);
1107
1108 cctx->gen = cctx_gen;
575 1109
576#if HAVE_MMAP 1110#if HAVE_MMAP
577
578 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1111 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
579 /* mmap suppsedly does allocate-on-write for us */ 1112 /* 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); 1113 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
581 1114
582 if (cctx->sptr == (void *)-1) 1115 if (cctx->sptr != (void *)-1)
583 {
584 perror ("FATAL: unable to mmap stack for coroutine");
585 _exit (EXIT_FAILURE);
586 } 1116 {
587
588# if STACKGUARD 1117# if CORO_STACKGUARD
589 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1118 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
590# endif 1119# endif
1120 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1121 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1122 cctx->flags |= CC_MAPPED;
1123 }
1124 else
1125#endif
1126 {
1127 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1128 New (0, cctx->sptr, cctx_stacksize, long);
591 1129
592#else
593
594 cctx->ssize = STACKSIZE * (long)sizeof (long);
595 New (0, cctx->sptr, STACKSIZE, long);
596
597 if (!cctx->sptr) 1130 if (!cctx->sptr)
598 { 1131 {
599 perror ("FATAL: unable to malloc stack for coroutine"); 1132 perror ("FATAL: unable to allocate stack for coroutine");
600 _exit (EXIT_FAILURE); 1133 _exit (EXIT_FAILURE);
601 } 1134 }
602 1135
603#endif 1136 stack_start = cctx->sptr;
1137 stack_size = cctx->ssize;
1138 }
604 1139
605#if USE_VALGRIND 1140 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
606 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1141 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 1142
614 return cctx; 1143 return cctx;
615} 1144}
616 1145
617static void 1146static void
618cctx_free (coro_cctx *cctx) 1147cctx_destroy (coro_cctx *cctx)
619{ 1148{
620 if (!cctx) 1149 if (!cctx)
621 return; 1150 return;
622 1151
623 --cctx_count; 1152 --cctx_count;
1153 coro_destroy (&cctx->cctx);
624 1154
1155 /* coro_transfer creates new, empty cctx's */
1156 if (cctx->sptr)
1157 {
625#if USE_VALGRIND 1158#if CORO_USE_VALGRIND
626 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1159 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
627#endif 1160#endif
628 1161
629#if HAVE_MMAP 1162#if HAVE_MMAP
1163 if (cctx->flags & CC_MAPPED)
630 munmap (cctx->sptr, cctx->ssize); 1164 munmap (cctx->sptr, cctx->ssize);
631#else 1165 else
1166#endif
632 Safefree (cctx->sptr); 1167 Safefree (cctx->sptr);
633#endif 1168 }
634 1169
635 Safefree (cctx); 1170 Safefree (cctx);
636} 1171}
637 1172
1173/* wether this cctx should be destructed */
1174#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1175
638static coro_cctx * 1176static coro_cctx *
639cctx_get () 1177cctx_get (pTHX)
640{ 1178{
641 coro_cctx *cctx; 1179 while (expect_true (cctx_first))
642
643 if (cctx_first)
644 { 1180 {
1181 coro_cctx *cctx = cctx_first;
1182 cctx_first = cctx->next;
645 --cctx_idle; 1183 --cctx_idle;
646 cctx = cctx_first; 1184
647 cctx_first = cctx->next; 1185 if (expect_true (!CCTX_EXPIRED (cctx)))
648 } 1186 return cctx;
649 else 1187
650 { 1188 cctx_destroy (cctx);
651 cctx = cctx_new ();
652 PL_op = PL_op->op_next;
653 } 1189 }
654 1190
655 return cctx; 1191 return cctx_new ();
656} 1192}
657 1193
658static void 1194static void
659cctx_put (coro_cctx *cctx) 1195cctx_put (coro_cctx *cctx)
660{ 1196{
1197 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1198
1199 /* free another cctx if overlimit */
1200 if (expect_false (cctx_idle >= cctx_max_idle))
1201 {
1202 coro_cctx *first = cctx_first;
1203 cctx_first = first->next;
1204 --cctx_idle;
1205
1206 cctx_destroy (first);
1207 }
1208
661 ++cctx_idle; 1209 ++cctx_idle;
662 cctx->next = cctx_first; 1210 cctx->next = cctx_first;
663 cctx_first = cctx; 1211 cctx_first = cctx;
664} 1212}
665 1213
666/* never call directly, always through the coro_state_transfer global variable */ 1214/** coroutine switching *****************************************************/
1215
1216static void
1217transfer_check (pTHX_ struct coro *prev, struct coro *next)
1218{
1219 if (expect_true (prev != next))
1220 {
1221 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1222 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1223
1224 if (expect_false (next->flags & CF_RUNNING))
1225 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1226
1227 if (expect_false (next->flags & CF_DESTROYED))
1228 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1229
1230#if !PERL_VERSION_ATLEAST (5,10,0)
1231 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1232 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1233#endif
1234 }
1235}
1236
1237/* always use the TRANSFER macro */
667static void NOINLINE 1238static void NOINLINE
668transfer (struct coro *prev, struct coro *next, int flags) 1239transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
669{ 1240{
670 dSTACKLEVEL; 1241 dSTACKLEVEL;
671 1242
672 /* sometimes transfer is only called to set idle_sp */ 1243 /* sometimes transfer is only called to set idle_sp */
673 if (flags == TRANSFER_SET_STACKLEVEL) 1244 if (expect_false (!next))
1245 {
674 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1246 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
675 else if (prev != next) 1247 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
676 { 1248 }
1249 else if (expect_true (prev != next))
1250 {
1251 static volatile int has_throw;
677 coro_cctx *prev__cctx; 1252 coro_cctx *prev__cctx;
678 1253
679 if (!prev->cctx) 1254 if (expect_false (prev->flags & CF_NEW))
680 { 1255 {
681 /* create a new empty context */ 1256 /* create a new empty/source context */
1257 ++cctx_count;
682 Newz (0, prev->cctx, 1, coro_cctx); 1258 New (0, prev->cctx, 1, coro_cctx);
683 prev->cctx->inuse = 1; 1259 prev->cctx->sptr = 0;
1260 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1261
1262 prev->flags &= ~CF_NEW;
684 prev->flags |= CF_RUNNING; 1263 prev->flags |= CF_RUNNING;
685 } 1264 }
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 1265
693 prev->flags &= ~CF_RUNNING; 1266 prev->flags &= ~CF_RUNNING;
694 next->flags |= CF_RUNNING; 1267 next->flags |= CF_RUNNING;
695 1268
696 LOCK; 1269 LOCK;
697 1270
698 if (next->mainstack) 1271 /* first get rid of the old state */
1272 save_perl (aTHX_ prev);
1273
1274 if (expect_false (next->flags & CF_NEW))
699 { 1275 {
700 /* coroutine already started */ 1276 /* need to start coroutine */
701 SAVE (prev, flags); 1277 next->flags &= ~CF_NEW;
702 LOAD (next); 1278 /* setup coroutine call */
1279 coro_setup (aTHX_ next);
703 } 1280 }
704 else 1281 else
1282 load_perl (aTHX_ next);
1283
1284 prev__cctx = prev->cctx;
1285
1286 /* possibly "free" the cctx */
1287 if (expect_true (
1288 prev__cctx->idle_sp == STACKLEVEL
1289 && !(prev__cctx->flags & CC_TRACE)
1290 && !force_cctx
1291 ))
705 { 1292 {
706 /* need to start coroutine */ 1293 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
707 /* first get rid of the old state */ 1294 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
708 SAVE (prev, -1); 1295
709 /* setup coroutine call */ 1296 prev->cctx = 0;
710 setup_coro (next); 1297
711 /* need a new stack */ 1298 /* 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); 1299 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1300 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1301 if (!next->cctx)
1302 next->cctx = cctx_get (aTHX);
1303
1304 cctx_put (prev__cctx);
713 } 1305 }
714 1306
715 prev__cctx = prev->cctx; 1307 ++next->usecount;
716 1308
717 /* possibly "free" the cctx */ 1309 if (expect_true (!next->cctx))
718 if (prev__cctx->idle_sp == STACKLEVEL) 1310 next->cctx = cctx_get (aTHX);
1311
1312 has_throw = !!next->throw;
1313
1314 if (expect_false (prev__cctx != next->cctx))
719 { 1315 {
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; 1316 prev__cctx->top_env = PL_top_env;
740 PL_top_env = next->cctx->top_env; 1317 PL_top_env = next->cctx->top_env;
741 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1318 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742 } 1319 }
743 1320
744 free_coro_mortal (); 1321 free_coro_mortal (aTHX);
745
746 UNLOCK; 1322 UNLOCK;
1323
1324 if (expect_false (has_throw))
1325 {
1326 struct coro *coro = SvSTATE (coro_current);
1327
1328 if (coro->throw)
1329 {
1330 SV *exception = coro->throw;
1331 coro->throw = 0;
1332 sv_setsv (ERRSV, exception);
1333 croak (0);
1334 }
1335 }
747 } 1336 }
748} 1337}
749 1338
750struct transfer_args 1339struct transfer_args
751{ 1340{
752 struct coro *prev, *next; 1341 struct coro *prev, *next;
753 int flags;
754}; 1342};
755 1343
1344#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
756#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) 1345#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
757 1346
1347/** high level stuff ********************************************************/
1348
758static void 1349static int
759coro_state_destroy (struct coro *coro) 1350coro_state_destroy (pTHX_ struct coro *coro)
760{ 1351{
761 if (coro->refcnt--) 1352 if (coro->flags & CF_DESTROYED)
762 return; 1353 return 0;
763 1354
1355 coro->flags |= CF_DESTROYED;
1356
764 if (coro->flags & CF_RUNNING) 1357 if (coro->flags & CF_READY)
765 croak ("FATAL: tried to destroy currently running coroutine"); 1358 {
1359 /* reduce nready, as destroying a ready coro effectively unreadies it */
1360 /* alternative: look through all ready queues and remove the coro */
1361 LOCK;
1362 --coro_nready;
1363 UNLOCK;
1364 }
1365 else
1366 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
766 1367
767 if (coro->mainstack && coro->mainstack != main_mainstack) 1368 if (coro->mainstack && coro->mainstack != main_mainstack)
768 { 1369 {
769 struct coro temp; 1370 struct coro temp;
770 1371
771 SAVE ((&temp), TRANSFER_SAVE_ALL); 1372 if (coro->flags & CF_RUNNING)
772 LOAD (coro); 1373 croak ("FATAL: tried to destroy currently running coroutine");
773 1374
774 coro_destroy_stacks (); 1375 save_perl (aTHX_ &temp);
1376 load_perl (aTHX_ coro);
775 1377
776 LOAD ((&temp)); /* this will get rid of defsv etc.. */ 1378 coro_destruct (aTHX_ coro);
777 1379
1380 load_perl (aTHX_ &temp);
1381
778 coro->mainstack = 0; 1382 coro->slot = 0;
779 } 1383 }
780 1384
781 cctx_free (coro->cctx); 1385 cctx_destroy (coro->cctx);
782 SvREFCNT_dec (coro->args); 1386 SvREFCNT_dec (coro->args);
783 Safefree (coro); 1387
1388 if (coro->next) coro->next->prev = coro->prev;
1389 if (coro->prev) coro->prev->next = coro->next;
1390 if (coro == coro_first) coro_first = coro->next;
1391
1392 return 1;
784} 1393}
785 1394
786static int 1395static int
787coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1396coro_state_free (pTHX_ SV *sv, MAGIC *mg)
788{ 1397{
789 struct coro *coro = (struct coro *)mg->mg_ptr; 1398 struct coro *coro = (struct coro *)mg->mg_ptr;
790 mg->mg_ptr = 0; 1399 mg->mg_ptr = 0;
791 1400
1401 coro->hv = 0;
1402
1403 if (--coro->refcnt < 0)
1404 {
792 coro_state_destroy (coro); 1405 coro_state_destroy (aTHX_ coro);
1406 Safefree (coro);
1407 }
793 1408
794 return 0; 1409 return 0;
795} 1410}
796 1411
797static int 1412static int
… …
804 return 0; 1419 return 0;
805} 1420}
806 1421
807static MGVTBL coro_state_vtbl = { 1422static MGVTBL coro_state_vtbl = {
808 0, 0, 0, 0, 1423 0, 0, 0, 0,
809 coro_state_clear, 1424 coro_state_free,
810 0, 1425 0,
811#ifdef MGf_DUP 1426#ifdef MGf_DUP
812 coro_state_dup, 1427 coro_state_dup,
813#else 1428#else
814# define MGf_DUP 0 1429# define MGf_DUP 0
815#endif 1430#endif
816}; 1431};
817 1432
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 1433static void
841prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) 1434prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
842{ 1435{
843 ta->prev = SvSTATE (prev); 1436 ta->prev = SvSTATE (prev_sv);
844 ta->next = SvSTATE (next); 1437 ta->next = SvSTATE (next_sv);
845 ta->flags = flags; 1438 TRANSFER_CHECK (*ta);
846} 1439}
847 1440
848static void 1441static void
849api_transfer (SV *prev, SV *next, int flags) 1442api_transfer (SV *prev_sv, SV *next_sv)
850{ 1443{
851 dTHX; 1444 dTHX;
852 struct transfer_args ta; 1445 struct transfer_args ta;
853 1446
854 prepare_transfer (&ta, prev, next, flags); 1447 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
855 TRANSFER (ta); 1448 TRANSFER (ta, 1);
856} 1449}
857 1450
858/** Coro ********************************************************************/ 1451/** Coro ********************************************************************/
859 1452
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 1453static void
873coro_enq (SV *coro_sv) 1454coro_enq (pTHX_ SV *coro_sv)
874{ 1455{
875 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1456 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
876 coro_nready++;
877} 1457}
878 1458
879static SV * 1459static SV *
880coro_deq (int min_prio) 1460coro_deq (pTHX)
881{ 1461{
882 int prio = PRIO_MAX - PRIO_MIN; 1462 int prio;
883 1463
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; ) 1464 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
889 if (AvFILLp (coro_ready [prio]) >= 0) 1465 if (AvFILLp (coro_ready [prio]) >= 0)
890 {
891 coro_nready--;
892 return av_shift (coro_ready [prio]); 1466 return av_shift (coro_ready [prio]);
893 }
894 1467
895 return 0; 1468 return 0;
896} 1469}
897 1470
898static int 1471static int
899api_ready (SV *coro_sv) 1472api_ready (SV *coro_sv)
900{ 1473{
1474 dTHX;
901 struct coro *coro; 1475 struct coro *coro;
1476 SV *sv_hook;
1477 void (*xs_hook)(void);
902 1478
903 if (SvROK (coro_sv)) 1479 if (SvROK (coro_sv))
904 coro_sv = SvRV (coro_sv); 1480 coro_sv = SvRV (coro_sv);
905 1481
906 coro = SvSTATE (coro_sv); 1482 coro = SvSTATE (coro_sv);
907 1483
908 if (coro->flags & CF_READY) 1484 if (coro->flags & CF_READY)
909 return 0; 1485 return 0;
910 1486
911 if (coro->flags & CF_RUNNING)
912 croak ("Coro::ready called on currently running coroutine");
913
914 coro->flags |= CF_READY; 1487 coro->flags |= CF_READY;
915 1488
916 LOCK; 1489 LOCK;
1490
1491 sv_hook = coro_nready ? 0 : coro_readyhook;
1492 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1493
917 coro_enq (SvREFCNT_inc (coro_sv)); 1494 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1495 ++coro_nready;
1496
918 UNLOCK; 1497 UNLOCK;
1498
1499 if (sv_hook)
1500 {
1501 dSP;
1502
1503 ENTER;
1504 SAVETMPS;
1505
1506 PUSHMARK (SP);
1507 PUTBACK;
1508 call_sv (sv_hook, G_DISCARD);
1509 SPAGAIN;
1510
1511 FREETMPS;
1512 LEAVE;
1513 }
1514
1515 if (xs_hook)
1516 xs_hook ();
919 1517
920 return 1; 1518 return 1;
921} 1519}
922 1520
923static int 1521static int
924api_is_ready (SV *coro_sv) 1522api_is_ready (SV *coro_sv)
925{ 1523{
1524 dTHX;
926 return !!SvSTATE (coro_sv)->flags & CF_READY; 1525 return !!(SvSTATE (coro_sv)->flags & CF_READY);
927} 1526}
928 1527
929static void 1528static void
930prepare_schedule (struct transfer_args *ta) 1529prepare_schedule (pTHX_ struct transfer_args *ta)
931{ 1530{
932 SV *current, *prev, *next; 1531 SV *prev_sv, *next_sv;
933
934 current = GvSV (coro_current);
935 1532
936 for (;;) 1533 for (;;)
937 { 1534 {
938 LOCK; 1535 LOCK;
939 next = coro_deq (PRIO_MIN); 1536 next_sv = coro_deq (aTHX);
1537
1538 /* nothing to schedule: call the idle handler */
1539 if (expect_false (!next_sv))
1540 {
1541 dSP;
1542 UNLOCK;
1543
1544 ENTER;
1545 SAVETMPS;
1546
1547 PUSHMARK (SP);
1548 PUTBACK;
1549 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1550 SPAGAIN;
1551
1552 FREETMPS;
1553 LEAVE;
1554 continue;
1555 }
1556
1557 ta->next = SvSTATE (next_sv);
1558
1559 /* cannot transfer to destroyed coros, skip and look for next */
1560 if (expect_false (ta->next->flags & CF_DESTROYED))
1561 {
1562 UNLOCK;
1563 SvREFCNT_dec (next_sv);
1564 /* coro_nready is already taken care of by destroy */
1565 continue;
1566 }
1567
1568 --coro_nready;
940 UNLOCK; 1569 UNLOCK;
941
942 if (next)
943 break; 1570 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 } 1571 }
958 }
959
960 prev = SvRV (current);
961 SvRV (current) = next;
962 1572
963 /* free this only after the transfer */ 1573 /* free this only after the transfer */
1574 prev_sv = SvRV (coro_current);
1575 ta->prev = SvSTATE (prev_sv);
1576 TRANSFER_CHECK (*ta);
1577 assert (ta->next->flags & CF_READY);
1578 ta->next->flags &= ~CF_READY;
1579 SvRV_set (coro_current, next_sv);
1580
964 LOCK; 1581 LOCK;
965 free_coro_mortal (); 1582 free_coro_mortal (aTHX);
1583 coro_mortal = prev_sv;
966 UNLOCK; 1584 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} 1585}
975 1586
976static void 1587static void
977prepare_cede (struct transfer_args *ta) 1588prepare_cede (pTHX_ struct transfer_args *ta)
978{ 1589{
979 api_ready (GvSV (coro_current)); 1590 api_ready (coro_current);
980
981 prepare_schedule (ta); 1591 prepare_schedule (aTHX_ ta);
1592}
1593
1594static int
1595prepare_cede_notself (pTHX_ struct transfer_args *ta)
1596{
1597 if (coro_nready)
1598 {
1599 SV *prev = SvRV (coro_current);
1600 prepare_schedule (aTHX_ ta);
1601 api_ready (prev);
1602 return 1;
1603 }
1604 else
1605 return 0;
982} 1606}
983 1607
984static void 1608static void
985api_schedule (void) 1609api_schedule (void)
986{ 1610{
987 dTHX; 1611 dTHX;
988 struct transfer_args ta; 1612 struct transfer_args ta;
989 1613
990 prepare_schedule (&ta); 1614 prepare_schedule (aTHX_ &ta);
991 TRANSFER (ta); 1615 TRANSFER (ta, 1);
992} 1616}
993 1617
994static void 1618static int
995api_cede (void) 1619api_cede (void)
996{ 1620{
997 dTHX; 1621 dTHX;
998 struct transfer_args ta; 1622 struct transfer_args ta;
999 1623
1000 prepare_cede (&ta); 1624 prepare_cede (aTHX_ &ta);
1625
1626 if (expect_true (ta.prev != ta.next))
1627 {
1001 TRANSFER (ta); 1628 TRANSFER (ta, 1);
1629 return 1;
1630 }
1631 else
1632 return 0;
1002} 1633}
1003 1634
1635static int
1636api_cede_notself (void)
1637{
1638 dTHX;
1639 struct transfer_args ta;
1640
1641 if (prepare_cede_notself (aTHX_ &ta))
1642 {
1643 TRANSFER (ta, 1);
1644 return 1;
1645 }
1646 else
1647 return 0;
1648}
1649
1650static void
1651api_trace (SV *coro_sv, int flags)
1652{
1653 dTHX;
1654 struct coro *coro = SvSTATE (coro_sv);
1655
1656 if (flags & CC_TRACE)
1657 {
1658 if (!coro->cctx)
1659 coro->cctx = cctx_new ();
1660 else if (!(coro->cctx->flags & CC_TRACE))
1661 croak ("cannot enable tracing on coroutine with custom stack");
1662
1663 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1664 }
1665 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1666 {
1667 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1668
1669 if (coro->flags & CF_RUNNING)
1670 PL_runops = RUNOPS_DEFAULT;
1671 else
1672 coro->slot->runops = RUNOPS_DEFAULT;
1673 }
1674}
1675
1676#if 0
1677static int
1678coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1679{
1680 AV *padlist;
1681 AV *av = (AV *)mg->mg_obj;
1682
1683 abort ();
1684
1685 return 0;
1686}
1687
1688static MGVTBL coro_gensub_vtbl = {
1689 0, 0, 0, 0,
1690 coro_gensub_free
1691};
1692#endif
1693
1694/*****************************************************************************/
1695/* PerlIO::cede */
1696
1697typedef struct
1698{
1699 PerlIOBuf base;
1700 NV next, every;
1701} PerlIOCede;
1702
1703static IV
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every;
1710
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712}
1713
1714static SV *
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718
1719 return newSVnv (self->every);
1720}
1721
1722static IV
1723PerlIOCede_flush (pTHX_ PerlIO *f)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726 double now = nvtime ();
1727
1728 if (now >= self->next)
1729 {
1730 api_cede ();
1731 self->next = now + self->every;
1732 }
1733
1734 return PerlIOBuf_flush (aTHX_ f);
1735}
1736
1737static PerlIO_funcs PerlIO_cede =
1738{
1739 sizeof(PerlIO_funcs),
1740 "cede",
1741 sizeof(PerlIOCede),
1742 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1743 PerlIOCede_pushed,
1744 PerlIOBuf_popped,
1745 PerlIOBuf_open,
1746 PerlIOBase_binmode,
1747 PerlIOCede_getarg,
1748 PerlIOBase_fileno,
1749 PerlIOBuf_dup,
1750 PerlIOBuf_read,
1751 PerlIOBuf_unread,
1752 PerlIOBuf_write,
1753 PerlIOBuf_seek,
1754 PerlIOBuf_tell,
1755 PerlIOBuf_close,
1756 PerlIOCede_flush,
1757 PerlIOBuf_fill,
1758 PerlIOBase_eof,
1759 PerlIOBase_error,
1760 PerlIOBase_clearerr,
1761 PerlIOBase_setlinebuf,
1762 PerlIOBuf_get_base,
1763 PerlIOBuf_bufsiz,
1764 PerlIOBuf_get_ptr,
1765 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt,
1767};
1768
1769
1004MODULE = Coro::State PACKAGE = Coro::State 1770MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1005 1771
1006PROTOTYPES: DISABLE 1772PROTOTYPES: DISABLE
1007 1773
1008BOOT: 1774BOOT:
1009{ 1775{
1010#ifdef USE_ITHREADS 1776#ifdef USE_ITHREADS
1011 MUTEX_INIT (&coro_mutex); 1777 MUTEX_INIT (&coro_lock);
1778# if CORO_PTHREAD
1779 coro_thx = PERL_GET_CONTEXT;
1780# endif
1012#endif 1781#endif
1013 BOOT_PAGESIZE; 1782 BOOT_PAGESIZE;
1014 1783
1784 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1785 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1786
1787 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1788 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1789 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1790
1791 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1792 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1793 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1794
1015 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1795 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1016 1796
1017 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1797 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1018 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1798 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1019 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1799 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1800 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1020 1801
1021 main_mainstack = PL_mainstack; 1802 main_mainstack = PL_mainstack;
1803 main_top_env = PL_top_env;
1022 1804
1805 while (main_top_env->je_prev)
1806 main_top_env = main_top_env->je_prev;
1807
1023 coroapi.ver = CORO_API_VERSION; 1808 coroapi.ver = CORO_API_VERSION;
1809 coroapi.rev = CORO_API_REVISION;
1024 coroapi.transfer = api_transfer; 1810 coroapi.transfer = api_transfer;
1811
1812 {
1813 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1814
1815 if (!svp) croak ("Time::HiRes is required");
1816 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1817
1818 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1819 }
1025 1820
1026 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1821 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1027} 1822}
1028 1823
1029SV * 1824SV *
1030new (char *klass, ...) 1825new (char *klass, ...)
1031 CODE: 1826 CODE:
1032{ 1827{
1033 struct coro *coro; 1828 struct coro *coro;
1829 MAGIC *mg;
1034 HV *hv; 1830 HV *hv;
1035 int i; 1831 int i;
1036 1832
1037 Newz (0, coro, 1, struct coro); 1833 Newz (0, coro, 1, struct coro);
1038 coro->args = newAV (); 1834 coro->args = newAV ();
1835 coro->flags = CF_NEW;
1039 1836
1837 if (coro_first) coro_first->prev = coro;
1838 coro->next = coro_first;
1839 coro_first = coro;
1840
1040 hv = newHV (); 1841 coro->hv = hv = newHV ();
1041 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1842 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1843 mg->mg_flags |= MGf_DUP;
1042 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1844 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1043 1845
1846 av_extend (coro->args, items - 1);
1044 for (i = 1; i < items; i++) 1847 for (i = 1; i < items; i++)
1045 av_push (coro->args, newSVsv (ST (i))); 1848 av_push (coro->args, newSVsv (ST (i)));
1046} 1849}
1047 OUTPUT: 1850 OUTPUT:
1048 RETVAL 1851 RETVAL
1049 1852
1853# these not obviously related functions are all rolled into the same xs
1854# function to increase chances that they all will call transfer with the same
1855# stack offset
1050void 1856void
1051_set_stacklevel (...) 1857_set_stacklevel (...)
1052 ALIAS: 1858 ALIAS:
1053 Coro::State::transfer = 1 1859 Coro::State::transfer = 1
1054 Coro::schedule = 2 1860 Coro::schedule = 2
1055 Coro::cede = 3 1861 Coro::cede = 3
1056 Coro::Cont::yield = 4 1862 Coro::cede_notself = 4
1057 CODE: 1863 CODE:
1058{ 1864{
1059 struct transfer_args ta; 1865 struct transfer_args ta;
1060 1866
1867 PUTBACK;
1061 switch (ix) 1868 switch (ix)
1062 { 1869 {
1063 case 0: 1870 case 0:
1064 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1871 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1065 ta.next = 0; 1872 ta.next = 0;
1066 ta.flags = TRANSFER_SET_STACKLEVEL;
1067 break; 1873 break;
1068 1874
1069 case 1: 1875 case 1:
1070 if (items != 3) 1876 if (items != 2)
1071 croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); 1877 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1072 1878
1073 prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); 1879 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1074 break; 1880 break;
1075 1881
1076 case 2: 1882 case 2:
1077 prepare_schedule (&ta); 1883 prepare_schedule (aTHX_ &ta);
1078 break; 1884 break;
1079 1885
1080 case 3: 1886 case 3:
1081 prepare_cede (&ta); 1887 prepare_cede (aTHX_ &ta);
1082 break; 1888 break;
1083 1889
1084 case 4: 1890 case 4:
1085 { 1891 if (!prepare_cede_notself (aTHX_ &ta))
1086 SV *yieldstack; 1892 XSRETURN_EMPTY;
1087 SV *sv;
1088 AV *defav = GvAV (PL_defgv);
1089 1893
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; 1894 break;
1109
1110 } 1895 }
1896 SPAGAIN;
1111 1897
1898 BARRIER;
1899 PUTBACK;
1112 TRANSFER (ta); 1900 TRANSFER (ta, 0);
1901 SPAGAIN; /* might be the sp of a different coroutine now */
1902 /* be extra careful not to ever do anything after TRANSFER */
1113} 1903}
1904
1905bool
1906_destroy (SV *coro_sv)
1907 CODE:
1908 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1909 OUTPUT:
1910 RETVAL
1114 1911
1115void 1912void
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) 1913_exit (int code)
1129 int code
1130 PROTOTYPE: $ 1914 PROTOTYPE: $
1131 CODE: 1915 CODE:
1132 _exit (code); 1916 _exit (code);
1917
1918int
1919cctx_stacksize (int new_stacksize = 0)
1920 CODE:
1921 RETVAL = cctx_stacksize;
1922 if (new_stacksize)
1923 {
1924 cctx_stacksize = new_stacksize;
1925 ++cctx_gen;
1926 }
1927 OUTPUT:
1928 RETVAL
1929
1930int
1931cctx_max_idle (int max_idle = 0)
1932 CODE:
1933 RETVAL = cctx_max_idle;
1934 if (max_idle > 1)
1935 cctx_max_idle = max_idle;
1936 OUTPUT:
1937 RETVAL
1133 1938
1134int 1939int
1135cctx_count () 1940cctx_count ()
1136 CODE: 1941 CODE:
1137 RETVAL = cctx_count; 1942 RETVAL = cctx_count;
… …
1143 CODE: 1948 CODE:
1144 RETVAL = cctx_idle; 1949 RETVAL = cctx_idle;
1145 OUTPUT: 1950 OUTPUT:
1146 RETVAL 1951 RETVAL
1147 1952
1953void
1954list ()
1955 PPCODE:
1956{
1957 struct coro *coro;
1958 for (coro = coro_first; coro; coro = coro->next)
1959 if (coro->hv)
1960 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1961}
1962
1963void
1964call (Coro::State coro, SV *coderef)
1965 ALIAS:
1966 eval = 1
1967 CODE:
1968{
1969 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1970 {
1971 struct coro temp;
1972
1973 if (!(coro->flags & CF_RUNNING))
1974 {
1975 PUTBACK;
1976 save_perl (aTHX_ &temp);
1977 load_perl (aTHX_ coro);
1978 }
1979
1980 {
1981 dSP;
1982 ENTER;
1983 SAVETMPS;
1984 PUTBACK;
1985 PUSHSTACK;
1986 PUSHMARK (SP);
1987
1988 if (ix)
1989 eval_sv (coderef, 0);
1990 else
1991 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1992
1993 POPSTACK;
1994 SPAGAIN;
1995 FREETMPS;
1996 LEAVE;
1997 PUTBACK;
1998 }
1999
2000 if (!(coro->flags & CF_RUNNING))
2001 {
2002 save_perl (aTHX_ coro);
2003 load_perl (aTHX_ &temp);
2004 SPAGAIN;
2005 }
2006 }
2007}
2008
2009SV *
2010is_ready (Coro::State coro)
2011 PROTOTYPE: $
2012 ALIAS:
2013 is_ready = CF_READY
2014 is_running = CF_RUNNING
2015 is_new = CF_NEW
2016 is_destroyed = CF_DESTROYED
2017 CODE:
2018 RETVAL = boolSV (coro->flags & ix);
2019 OUTPUT:
2020 RETVAL
2021
2022void
2023api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2024
2025SV *
2026has_cctx (Coro::State coro)
2027 PROTOTYPE: $
2028 CODE:
2029 RETVAL = boolSV (!!coro->cctx);
2030 OUTPUT:
2031 RETVAL
2032
2033int
2034is_traced (Coro::State coro)
2035 PROTOTYPE: $
2036 CODE:
2037 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2038 OUTPUT:
2039 RETVAL
2040
2041UV
2042rss (Coro::State coro)
2043 PROTOTYPE: $
2044 ALIAS:
2045 usecount = 1
2046 CODE:
2047 switch (ix)
2048 {
2049 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2050 case 1: RETVAL = coro->usecount; break;
2051 }
2052 OUTPUT:
2053 RETVAL
2054
2055void
2056force_cctx ()
2057 CODE:
2058 struct coro *coro = SvSTATE (coro_current);
2059 coro->cctx->idle_sp = 0;
2060
2061void
2062swap_defsv (Coro::State self)
2063 PROTOTYPE: $
2064 ALIAS:
2065 swap_defav = 1
2066 CODE:
2067 if (!self->slot)
2068 croak ("cannot swap state with coroutine that has no saved state");
2069 else
2070 {
2071 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2072 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2073
2074 SV *tmp = *src; *src = *dst; *dst = tmp;
2075 }
2076
1148MODULE = Coro::State PACKAGE = Coro 2077MODULE = Coro::State PACKAGE = Coro
1149 2078
1150BOOT: 2079BOOT:
1151{ 2080{
1152 int i; 2081 int i;
1153 2082
2083 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2084 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2085 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2086
2087 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2088 SvREADONLY_on (coro_current);
2089
1154 coro_stash = gv_stashpv ("Coro", TRUE); 2090 coro_stash = gv_stashpv ("Coro", TRUE);
1155 2091
1156 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2092 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1157 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2093 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1158 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2094 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1159 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2095 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1160 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2096 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1161 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2097 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1162 2098
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--; ) 2099 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1167 coro_ready[i] = newAV (); 2100 coro_ready[i] = newAV ();
1168 2101
1169 { 2102 {
1170 SV *sv = perl_get_sv("Coro::API", 1); 2103 SV *sv = perl_get_sv ("Coro::API", TRUE);
2104 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1171 2105
1172 coroapi.schedule = api_schedule; 2106 coroapi.schedule = api_schedule;
1173 coroapi.cede = api_cede; 2107 coroapi.cede = api_cede;
2108 coroapi.cede_notself = api_cede_notself;
1174 coroapi.ready = api_ready; 2109 coroapi.ready = api_ready;
1175 coroapi.is_ready = api_is_ready; 2110 coroapi.is_ready = api_is_ready;
1176 coroapi.nready = &coro_nready; 2111 coroapi.nready = &coro_nready;
1177 coroapi.current = coro_current; 2112 coroapi.current = coro_current;
1178 2113
1179 GCoroAPI = &coroapi; 2114 GCoroAPI = &coroapi;
1180 sv_setiv (sv, (IV)&coroapi); 2115 sv_setiv (sv, (IV)&coroapi);
1181 SvREADONLY_on (sv); 2116 SvREADONLY_on (sv);
1182 } 2117 }
1183} 2118}
2119
2120void
2121_set_current (SV *current)
2122 PROTOTYPE: $
2123 CODE:
2124 SvREFCNT_dec (SvRV (coro_current));
2125 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2126
2127void
2128_set_readyhook (SV *hook)
2129 PROTOTYPE: $
2130 CODE:
2131 LOCK;
2132 SvREFCNT_dec (coro_readyhook);
2133 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2134 UNLOCK;
1184 2135
1185int 2136int
1186prio (Coro::State coro, int newprio = 0) 2137prio (Coro::State coro, int newprio = 0)
1187 ALIAS: 2138 ALIAS:
1188 nice = 1 2139 nice = 1
… …
1191 RETVAL = coro->prio; 2142 RETVAL = coro->prio;
1192 2143
1193 if (items > 1) 2144 if (items > 1)
1194 { 2145 {
1195 if (ix) 2146 if (ix)
1196 newprio += coro->prio; 2147 newprio = coro->prio - newprio;
1197 2148
1198 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2149 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1199 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2150 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1200 2151
1201 coro->prio = newprio; 2152 coro->prio = newprio;
1202 } 2153 }
1203} 2154}
2155 OUTPUT:
2156 RETVAL
1204 2157
1205SV * 2158SV *
1206ready (SV *self) 2159ready (SV *self)
1207 PROTOTYPE: $ 2160 PROTOTYPE: $
1208 CODE: 2161 CODE:
1209 RETVAL = boolSV (api_ready (self)); 2162 RETVAL = boolSV (api_ready (self));
1210 OUTPUT: 2163 OUTPUT:
1211 RETVAL 2164 RETVAL
1212 2165
1213SV *
1214is_ready (SV *self)
1215 PROTOTYPE: $
1216 CODE:
1217 RETVAL = boolSV (api_is_ready (self));
1218 OUTPUT:
1219 RETVAL
1220
1221int 2166int
1222nready (...) 2167nready (...)
1223 PROTOTYPE: 2168 PROTOTYPE:
1224 CODE: 2169 CODE:
1225 RETVAL = coro_nready; 2170 RETVAL = coro_nready;
1226 OUTPUT: 2171 OUTPUT:
1227 RETVAL 2172 RETVAL
1228 2173
1229MODULE = Coro::State PACKAGE = Coro::AIO 2174void
2175throw (Coro::State self, SV *throw = &PL_sv_undef)
2176 PROTOTYPE: $;$
2177 CODE:
2178 SvREFCNT_dec (self->throw);
2179 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2180
2181# for async_pool speedup
2182void
2183_pool_1 (SV *cb)
2184 CODE:
2185{
2186 struct coro *coro = SvSTATE (coro_current);
2187 HV *hv = (HV *)SvRV (coro_current);
2188 AV *defav = GvAV (PL_defgv);
2189 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2190 AV *invoke_av;
2191 int i, len;
2192
2193 if (!invoke)
2194 {
2195 SV *old = PL_diehook;
2196 PL_diehook = 0;
2197 SvREFCNT_dec (old);
2198 croak ("\3async_pool terminate\2\n");
2199 }
2200
2201 SvREFCNT_dec (coro->saved_deffh);
2202 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2203
2204 hv_store (hv, "desc", sizeof ("desc") - 1,
2205 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2206
2207 invoke_av = (AV *)SvRV (invoke);
2208 len = av_len (invoke_av);
2209
2210 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2211
2212 if (len > 0)
2213 {
2214 av_fill (defav, len - 1);
2215 for (i = 0; i < len; ++i)
2216 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2217 }
2218
2219 SvREFCNT_dec (invoke);
2220}
2221
2222void
2223_pool_2 (SV *cb)
2224 CODE:
2225{
2226 struct coro *coro = SvSTATE (coro_current);
2227
2228 sv_setsv (cb, &PL_sv_undef);
2229
2230 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2231 coro->saved_deffh = 0;
2232
2233 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2234 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2235 {
2236 SV *old = PL_diehook;
2237 PL_diehook = 0;
2238 SvREFCNT_dec (old);
2239 croak ("\3async_pool terminate\2\n");
2240 }
2241
2242 av_clear (GvAV (PL_defgv));
2243 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2244 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2245
2246 coro->prio = 0;
2247
2248 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2249 api_trace (coro_current, 0);
2250
2251 av_push (av_async_pool, newSVsv (coro_current));
2252}
2253
2254#if 0
2255
2256void
2257_generator_call (...)
2258 PROTOTYPE: @
2259 PPCODE:
2260 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2261 xxxx
2262 abort ();
1230 2263
1231SV * 2264SV *
1232_get_state () 2265gensub (SV *sub, ...)
1233 CODE: 2266 PROTOTYPE: &;@
2267 CODE:
1234{ 2268{
1235 struct { 2269 struct coro *coro;
1236 int errorno; 2270 MAGIC *mg;
1237 int laststype; 2271 CV *xcv;
1238 int laststatval; 2272 CV *ncv = (CV *)newSV_type (SVt_PVCV);
1239 Stat_t statcache; 2273 int i;
1240 } data;
1241 2274
1242 data.errorno = errno; 2275 CvGV (ncv) = CvGV (cv);
1243 data.laststype = PL_laststype; 2276 CvFILE (ncv) = CvFILE (cv);
1244 data.laststatval = PL_laststatval;
1245 data.statcache = PL_statcache;
1246 2277
1247 RETVAL = newSVpvn ((char *)&data, sizeof data); 2278 Newz (0, coro, 1, struct coro);
2279 coro->args = newAV ();
2280 coro->flags = CF_NEW;
2281
2282 av_extend (coro->args, items - 1);
2283 for (i = 1; i < items; i++)
2284 av_push (coro->args, newSVsv (ST (i)));
2285
2286 CvISXSUB_on (ncv);
2287 CvXSUBANY (ncv).any_ptr = (void *)coro;
2288
2289 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2290
2291 CvXSUB (ncv) = CvXSUB (xcv);
2292 CvANON_on (ncv);
2293
2294 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2295 RETVAL = newRV_noinc ((SV *)ncv);
1248} 2296}
1249 OUTPUT: 2297 OUTPUT:
1250 RETVAL 2298 RETVAL
1251 2299
2300#endif
2301
2302
2303MODULE = Coro::State PACKAGE = Coro::AIO
2304
1252void 2305void
1253_set_state (char *data_) 2306_get_state (SV *self)
2307 PPCODE:
2308{
2309 AV *defav = GvAV (PL_defgv);
2310 AV *av = newAV ();
2311 int i;
2312 SV *data_sv = newSV (sizeof (struct io_state));
2313 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2314 SvCUR_set (data_sv, sizeof (struct io_state));
2315 SvPOK_only (data_sv);
2316
2317 data->errorno = errno;
2318 data->laststype = PL_laststype;
2319 data->laststatval = PL_laststatval;
2320 data->statcache = PL_statcache;
2321
2322 av_extend (av, AvFILLp (defav) + 1 + 1);
2323
2324 for (i = 0; i <= AvFILLp (defav); ++i)
2325 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2326
2327 av_push (av, data_sv);
2328
2329 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2330
2331 api_ready (self);
2332}
2333
2334void
2335_set_state (SV *state)
1254 PROTOTYPE: $ 2336 PROTOTYPE: $
2337 PPCODE:
2338{
2339 AV *av = (AV *)SvRV (state);
2340 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2341 int i;
2342
2343 errno = data->errorno;
2344 PL_laststype = data->laststype;
2345 PL_laststatval = data->laststatval;
2346 PL_statcache = data->statcache;
2347
2348 EXTEND (SP, AvFILLp (av));
2349 for (i = 0; i < AvFILLp (av); ++i)
2350 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2351}
2352
2353
2354MODULE = Coro::State PACKAGE = Coro::AnyEvent
2355
2356BOOT:
2357 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2358
2359SV *
2360_schedule (...)
2361 PROTOTYPE: @
1255 CODE: 2362 CODE:
1256{ 2363{
1257 struct { 2364 static int incede;
1258 int errorno;
1259 int laststype;
1260 int laststatval;
1261 Stat_t statcache;
1262 } *data = (void *)data_;
1263 2365
1264 errno = data->errorno; 2366 api_cede_notself ();
1265 PL_laststype = data->laststype; 2367
1266 PL_laststatval = data->laststatval; 2368 ++incede;
1267 PL_statcache = data->statcache; 2369 while (coro_nready >= incede && api_cede ())
2370 ;
2371
2372 sv_setsv (sv_activity, &PL_sv_undef);
2373 if (coro_nready >= incede)
2374 {
2375 PUSHMARK (SP);
2376 PUTBACK;
2377 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2378 SPAGAIN;
2379 }
2380
2381 --incede;
1268} 2382}
2383
2384
2385MODULE = Coro::State PACKAGE = PerlIO::cede
2386
2387BOOT:
2388 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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