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Comparing Coro/Coro/State.xs (file contents):
Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC vs.
Revision 1.260 by root, Mon Nov 10 04:37:23 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 12
9#include <stdio.h> 13#include <stdio.h>
10#include <errno.h> 14#include <errno.h>
11#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
12 25
13#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
14# include <unistd.h> 27# include <unistd.h>
15# include <sys/mman.h> 28# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
31#else 44#else
32# define PAGESIZE 0 45# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
34#endif 47#endif
35 48
36#if USE_VALGRIND 49#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
38#endif 54#endif
39 55
40/* the maximum number of idle cctx that will be pooled */ 56/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 57static int cctx_max_idle = 4;
42 58
43#define PERL_VERSION_ATLEAST(a,b,c) \ 59#define PERL_VERSION_ATLEAST(a,b,c) \
44 (PERL_REVISION > (a) \ 60 (PERL_REVISION > (a) \
45 || (PERL_REVISION == (a) \ 61 || (PERL_REVISION == (a) \
46 && (PERL_VERSION > (b) \ 62 && (PERL_VERSION > (b) \
… …
65# ifndef IS_PADCONST 81# ifndef IS_PADCONST
66# define IS_PADCONST(v) 0 82# define IS_PADCONST(v) 0
67# endif 83# endif
68#endif 84#endif
69 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
70/* 5.8.7 */ 104/* 5.8.7 */
71#ifndef SvRV_set 105#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
73#endif 107#endif
74 108
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD 110# undef CORO_STACKGUARD
77#endif 111#endif
78 112
79#ifndef STACKGUARD 113#ifndef CORO_STACKGUARD
80# define STACKGUARD 0 114# define CORO_STACKGUARD 0
81#endif 115#endif
82 116
83/* prefer perl internal functions over our own? */ 117/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS 118#ifndef CORO_PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
86#endif 120#endif
87 121
88/* The next macro should declare a variable stacklevel that contains and approximation 122/* The next macros try to return the current stack pointer, in an as
89 * to the current C stack pointer. Its property is that it changes with each call 123 * portable way as possible. */
90 * and should be unique. */
91#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
92#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
93 126
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 128
96#if __GNUC__ >= 3 129#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value))
99#else 133#else
100# define attribute(x) 134# define attribute(x)
101# define BARRIER 135# define BARRIER
136# define expect(expr,value) (expr)
102#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
103 141
104#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
105 143
106#include "CoroAPI.h" 144#include "CoroAPI.h"
107 145
108#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
109static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
110# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
111# 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
112#else 155#else
156
113# define LOCK (void)0 157# define LOCK (void)0
114# define UNLOCK (void)0 158# define UNLOCK (void)0
159
115#endif 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
116 166
117/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
118struct io_state 168struct io_state
119{ 169{
170 AV *res;
120 int errorno; 171 int errorno;
121 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
122 int laststatval; 173 int laststatval;
123 Stat_t statcache; 174 Stat_t statcache;
124}; 175};
125 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE;
126static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
127static 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;
128static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
129static SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192
193static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook;
196static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */
198
199/* async_pool helper stuff */
200static SV *sv_pool_rss;
201static SV *sv_pool_size;
202static AV *av_async_pool;
203
204/* Coro::AnyEvent */
205static SV *sv_activity;
130 206
131static struct coro_cctx *cctx_first; 207static struct coro_cctx *cctx_first;
132static int cctx_count, cctx_idle; 208static int cctx_count, cctx_idle;
209
210enum {
211 CC_MAPPED = 0x01,
212 CC_NOREUSE = 0x02, /* throw this away after tracing */
213 CC_TRACE = 0x04,
214 CC_TRACE_SUB = 0x08, /* trace sub calls */
215 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217};
133 218
134/* this is a structure representing a c-level coroutine */ 219/* this is a structure representing a c-level coroutine */
135typedef struct coro_cctx { 220typedef struct coro_cctx {
136 struct coro_cctx *next; 221 struct coro_cctx *next;
137 222
138 /* the stack */ 223 /* the stack */
139 void *sptr; 224 void *sptr;
140 long ssize; /* positive == mmap, otherwise malloc */ 225 size_t ssize;
141 226
142 /* cpu state */ 227 /* cpu state */
143 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 228 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
144 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 229 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
145 JMPENV *top_env; 230 JMPENV *top_env;
146 coro_context cctx; 231 coro_context cctx;
147 232
148 int inuse; 233 U32 gen;
149
150#if USE_VALGRIND 234#if CORO_USE_VALGRIND
151 int valgrind_id; 235 int valgrind_id;
152#endif 236#endif
237 unsigned char flags;
153} coro_cctx; 238} coro_cctx;
154 239
155enum { 240enum {
156 CF_RUNNING = 0x0001, /* coroutine is running */ 241 CF_RUNNING = 0x0001, /* coroutine is running */
157 CF_READY = 0x0002, /* coroutine is ready */ 242 CF_READY = 0x0002, /* coroutine is ready */
158 CF_NEW = 0x0004, /* has never been switched to */ 243 CF_NEW = 0x0004, /* has never been switched to */
159 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
160}; 245};
161 246
247/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct {
249 SV *defsv;
250 AV *defav;
251 SV *errsv;
252 SV *irsgv;
253#define VAR(name,type) type name;
254# include "state.h"
255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
162/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
163struct coro { 261struct coro {
164 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the c coroutine allocated to this perl coroutine, if any */
165 coro_cctx *cctx; 263 coro_cctx *cctx;
166 264
265 /* process data */
266 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */
268
167 /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
168 AV *args; 270 int refcnt; /* coroutines are refcounted, yes */
169 int refcnt;
170 int save; /* CORO_SAVE flags */
171 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */
172 273
173 /* optionally saved, might be zero */ 274 /* statistics */
174 AV *defav; /* @_ */ 275 int usecount; /* number of transfers to this coro */
175 SV *defsv; /* $_ */
176 SV *errsv; /* $@ */
177 SV *irssv; /* $/ */
178 SV *irssv_sv; /* real $/ cache */
179
180#define VAR(name,type) type name;
181# include "state.h"
182#undef VAR
183 276
184 /* coro process data */ 277 /* coro process data */
185 int prio; 278 int prio;
279 SV *throw; /* exception to be thrown */
280
281 /* async_pool */
282 SV *saved_deffh;
283
284 /* linked list */
285 struct coro *next, *prev;
186}; 286};
187 287
188typedef struct coro *Coro__State; 288typedef struct coro *Coro__State;
189typedef struct coro *Coro__State_or_hashref; 289typedef struct coro *Coro__State_or_hashref;
190 290
… …
197#define PRIO_IDLE -3 297#define PRIO_IDLE -3
198#define PRIO_MIN -4 298#define PRIO_MIN -4
199 299
200/* for Coro.pm */ 300/* for Coro.pm */
201static SV *coro_current; 301static SV *coro_current;
302static SV *coro_readyhook;
202static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
203static int coro_nready; 304static int coro_nready;
305static struct coro *coro_first;
204 306
205/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
206 308
309static SV *
310coro_get_sv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create);
315#endif
316 return get_sv (name, create);
317}
318
207static AV * 319static AV *
320coro_get_av (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create);
325#endif
326 return get_av (name, create);
327}
328
329static HV *
330coro_get_hv (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create);
335#endif
336 return get_hv (name, create);
337}
338
339static AV *
208coro_clone_padlist (CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
209{ 341{
210 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
211 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
212 344
213 newpadlist = newAV (); 345 newpadlist = newAV ();
214 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
215#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
216 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
217#else 349#else
218 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
219#endif 351#endif
220 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
221 --AvFILLp (padlist); 353 --AvFILLp (padlist);
222 354
223 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
224 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
225 357
226 return newpadlist; 358 return newpadlist;
227} 359}
228 360
229static void 361static void
230free_padlist (AV *padlist) 362free_padlist (pTHX_ AV *padlist)
231{ 363{
232 /* may be during global destruction */ 364 /* may be during global destruction */
233 if (SvREFCNT (padlist)) 365 if (SvREFCNT (padlist))
234 { 366 {
235 I32 i = AvFILLp (padlist); 367 I32 i = AvFILLp (padlist);
… …
256 AV *padlist; 388 AV *padlist;
257 AV *av = (AV *)mg->mg_obj; 389 AV *av = (AV *)mg->mg_obj;
258 390
259 /* casting is fun. */ 391 /* casting is fun. */
260 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
261 free_padlist (padlist); 393 free_padlist (aTHX_ padlist);
262 394
263 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
264 396
265 return 0; 397 return 0;
266} 398}
267 399
268#define PERL_MAGIC_coro PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
269 402
270static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0,
405 coro_cv_free
406};
271 407
272#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC(sv, type) \
273 SvMAGIC (cv) \ 409 SvMAGIC (sv) \
274 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 410 ? SvMAGIC (sv)->mg_type == type \
275 ? SvMAGIC (cv) \ 411 ? SvMAGIC (sv) \
276 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 412 : mg_find (sv, type) \
277 : 0 413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418static struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
278 443
279/* the next two functions merely cache the padlists */ 444/* the next two functions merely cache the padlists */
280static void 445static void
281get_padlist (CV *cv) 446get_padlist (pTHX_ CV *cv)
282{ 447{
283 MAGIC *mg = CORO_MAGIC (cv); 448 MAGIC *mg = CORO_MAGIC_cv (cv);
284 AV *av; 449 AV *av;
285 450
286 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
287 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288 else 453 else
289 { 454 {
290#if PREFER_PERL_FUNCTIONS 455#if CORO_PREFER_PERL_FUNCTIONS
291 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
292 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
293 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
294 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
295 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
296#else 462#else
297 CvPADLIST (cv) = coro_clone_padlist (cv); 463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
298#endif 464#endif
299 } 465 }
300} 466}
301 467
302static void 468static void
303put_padlist (CV *cv) 469put_padlist (pTHX_ CV *cv)
304{ 470{
305 MAGIC *mg = CORO_MAGIC (cv); 471 MAGIC *mg = CORO_MAGIC_cv (cv);
306 AV *av; 472 AV *av;
307 473
308 if (!mg) 474 if (expect_false (!mg))
309 { 475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
310 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
311 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
312 mg->mg_virtual = &vtbl_coro;
313 mg->mg_obj = (SV *)newAV ();
314 }
315 476
316 av = (AV *)mg->mg_obj; 477 av = (AV *)mg->mg_obj;
317 478
318 if (AvFILLp (av) >= AvMAX (av)) 479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
319 av_extend (av, AvMAX (av) + 1); 480 av_extend (av, AvMAX (av) + 1);
320 481
321 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322} 483}
323 484
324/** load & save, init *******************************************************/ 485/** load & save, init *******************************************************/
325 486
326#define SB do {
327#define SE } while (0)
328
329#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
330
331static void 487static void
332load_perl (Coro__State c) 488load_perl (pTHX_ Coro__State c)
333{ 489{
490 perl_slots *slot = c->slot;
491 c->slot = 0;
492
493 PL_mainstack = c->mainstack;
494
495 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv;
499
334#define VAR(name,type) PL_ ## name = c->name; 500 #define VAR(name,type) PL_ ## name = slot->name;
335# include "state.h" 501 # include "state.h"
336#undef VAR 502 #undef VAR
337
338 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
339 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
340 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
341 if (c->irssv)
342 {
343 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
344 SvREFCNT_dec (c->irssv);
345 else
346 {
347 REPLACE_SV (PL_rs, c->irssv);
348 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
349 sv_setsv (c->irssv_sv, PL_rs);
350 }
351 }
352 503
353 { 504 {
354 dSP; 505 dSP;
506
355 CV *cv; 507 CV *cv;
356 508
357 /* now do the ugly restore mess */ 509 /* now do the ugly restore mess */
358 while ((cv = (CV *)POPs)) 510 while (expect_true (cv = (CV *)POPs))
359 { 511 {
360 put_padlist (cv); /* mark this padlist as available */ 512 put_padlist (aTHX_ cv); /* mark this padlist as available */
361 CvDEPTH (cv) = PTR2IV (POPs); 513 CvDEPTH (cv) = PTR2IV (POPs);
362 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
363 } 515 }
364 516
365 PUTBACK; 517 PUTBACK;
366 } 518 }
367} 519}
368 520
369static void 521static void
370save_perl (Coro__State c) 522save_perl (pTHX_ Coro__State c)
371{ 523{
372 { 524 {
373 dSP; 525 dSP;
374 I32 cxix = cxstack_ix; 526 I32 cxix = cxstack_ix;
375 PERL_CONTEXT *ccstk = cxstack; 527 PERL_CONTEXT *ccstk = cxstack;
… …
378 /* 530 /*
379 * the worst thing you can imagine happens first - we have to save 531 * the worst thing you can imagine happens first - we have to save
380 * (and reinitialize) all cv's in the whole callchain :( 532 * (and reinitialize) all cv's in the whole callchain :(
381 */ 533 */
382 534
383 EXTEND (SP, 3 + 1);
384 PUSHs (Nullsv); 535 XPUSHs (Nullsv);
385 /* this loop was inspired by pp_caller */ 536 /* this loop was inspired by pp_caller */
386 for (;;) 537 for (;;)
387 { 538 {
388 while (cxix >= 0) 539 while (expect_true (cxix >= 0))
389 { 540 {
390 PERL_CONTEXT *cx = &ccstk[cxix--]; 541 PERL_CONTEXT *cx = &ccstk[cxix--];
391 542
392 if (CxTYPE (cx) == CXt_SUB) 543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
393 { 544 {
394 CV *cv = cx->blk_sub.cv; 545 CV *cv = cx->blk_sub.cv;
395 546
396 if (CvDEPTH (cv)) 547 if (expect_true (CvDEPTH (cv)))
397 { 548 {
398 EXTEND (SP, 3); 549 EXTEND (SP, 3);
399 PUSHs ((SV *)CvPADLIST (cv)); 550 PUSHs ((SV *)CvPADLIST (cv));
400 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 551 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
401 PUSHs ((SV *)cv); 552 PUSHs ((SV *)cv);
402 553
403 CvDEPTH (cv) = 0; 554 CvDEPTH (cv) = 0;
404 get_padlist (cv); 555 get_padlist (aTHX_ cv);
405 } 556 }
406 } 557 }
407 } 558 }
408 559
409 if (top_si->si_type == PERLSI_MAIN) 560 if (expect_true (top_si->si_type == PERLSI_MAIN))
410 break; 561 break;
411 562
412 top_si = top_si->si_prev; 563 top_si = top_si->si_prev;
413 ccstk = top_si->si_cxstack; 564 ccstk = top_si->si_cxstack;
414 cxix = top_si->si_cxix; 565 cxix = top_si->si_cxix;
415 } 566 }
416 567
417 PUTBACK; 568 PUTBACK;
418 } 569 }
419 570
420 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 571 /* allocate some space on the context stack for our purposes */
421 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 572 /* we manually unroll here, as usually 2 slots is enough */
422 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 573 if (SLOT_COUNT >= 1) CXINC;
423 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 574 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC;
576 {
577 int i;
578 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC;
580 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */
424 582
583 c->mainstack = PL_mainstack;
584
585 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587
588 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV;
590 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv);
592
425#define VAR(name,type)c->name = PL_ ## name; 593 #define VAR(name,type) slot->name = PL_ ## name;
426# include "state.h" 594 # include "state.h"
427#undef VAR 595 #undef VAR
596 }
428} 597}
429 598
430/* 599/*
431 * allocate various perl stacks. This is an exact copy 600 * allocate various perl stacks. This is an exact copy
432 * of perl.c:init_stacks, except that it uses less memory 601 * of perl.c:init_stacks, except that it uses less memory
433 * on the (sometimes correct) assumption that coroutines do 602 * on the (sometimes correct) assumption that coroutines do
434 * not usually need a lot of stackspace. 603 * not usually need a lot of stackspace.
435 */ 604 */
436#if PREFER_PERL_FUNCTIONS 605#if CORO_PREFER_PERL_FUNCTIONS
437# define coro_init_stacks init_stacks 606# define coro_init_stacks init_stacks
438#else 607#else
439static void 608static void
440coro_init_stacks () 609coro_init_stacks (pTHX)
441{ 610{
442 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 611 PL_curstackinfo = new_stackinfo(32, 8);
443 PL_curstackinfo->si_type = PERLSI_MAIN; 612 PL_curstackinfo->si_type = PERLSI_MAIN;
444 PL_curstack = PL_curstackinfo->si_stack; 613 PL_curstack = PL_curstackinfo->si_stack;
445 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 614 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446 615
447 PL_stack_base = AvARRAY(PL_curstack); 616 PL_stack_base = AvARRAY(PL_curstack);
448 PL_stack_sp = PL_stack_base; 617 PL_stack_sp = PL_stack_base;
449 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 618 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450 619
451 New(50,PL_tmps_stack,128,SV*); 620 New(50,PL_tmps_stack,32,SV*);
452 PL_tmps_floor = -1; 621 PL_tmps_floor = -1;
453 PL_tmps_ix = -1; 622 PL_tmps_ix = -1;
454 PL_tmps_max = 128; 623 PL_tmps_max = 32;
455 624
456 New(54,PL_markstack,32,I32); 625 New(54,PL_markstack,16,I32);
457 PL_markstack_ptr = PL_markstack; 626 PL_markstack_ptr = PL_markstack;
458 PL_markstack_max = PL_markstack + 32; 627 PL_markstack_max = PL_markstack + 16;
459 628
460#ifdef SET_MARK_OFFSET 629#ifdef SET_MARK_OFFSET
461 SET_MARK_OFFSET; 630 SET_MARK_OFFSET;
462#endif 631#endif
463 632
464 New(54,PL_scopestack,32,I32); 633 New(54,PL_scopestack,8,I32);
465 PL_scopestack_ix = 0; 634 PL_scopestack_ix = 0;
466 PL_scopestack_max = 32; 635 PL_scopestack_max = 8;
467 636
468 New(54,PL_savestack,64,ANY); 637 New(54,PL_savestack,24,ANY);
469 PL_savestack_ix = 0; 638 PL_savestack_ix = 0;
470 PL_savestack_max = 64; 639 PL_savestack_max = 24;
471 640
472#if !PERL_VERSION_ATLEAST (5,9,0) 641#if !PERL_VERSION_ATLEAST (5,10,0)
473 New(54,PL_retstack,16,OP*); 642 New(54,PL_retstack,4,OP*);
474 PL_retstack_ix = 0; 643 PL_retstack_ix = 0;
475 PL_retstack_max = 16; 644 PL_retstack_max = 4;
476#endif 645#endif
477} 646}
478#endif 647#endif
479 648
480/* 649/*
481 * destroy the stacks, the callchain etc... 650 * destroy the stacks, the callchain etc...
482 */ 651 */
483static void 652static void
484coro_destroy_stacks () 653coro_destruct_stacks (pTHX)
485{ 654{
486 if (!IN_DESTRUCT)
487 {
488 /* restore all saved variables and stuff */
489 LEAVE_SCOPE (0);
490 assert (PL_tmps_floor == -1);
491
492 /* free all temporaries */
493 FREETMPS;
494 assert (PL_tmps_ix == -1);
495
496 /* unwind all extra stacks */
497 POPSTACK_TO (PL_mainstack);
498
499 /* unwind main stack */
500 dounwind (-1);
501 }
502
503 while (PL_curstackinfo->si_next) 655 while (PL_curstackinfo->si_next)
504 PL_curstackinfo = PL_curstackinfo->si_next; 656 PL_curstackinfo = PL_curstackinfo->si_next;
505 657
506 while (PL_curstackinfo) 658 while (PL_curstackinfo)
507 { 659 {
… …
517 669
518 Safefree (PL_tmps_stack); 670 Safefree (PL_tmps_stack);
519 Safefree (PL_markstack); 671 Safefree (PL_markstack);
520 Safefree (PL_scopestack); 672 Safefree (PL_scopestack);
521 Safefree (PL_savestack); 673 Safefree (PL_savestack);
522#if !PERL_VERSION_ATLEAST (5,9,0) 674#if !PERL_VERSION_ATLEAST (5,10,0)
523 Safefree (PL_retstack); 675 Safefree (PL_retstack);
524#endif 676#endif
525} 677}
526 678
679static size_t
680coro_rss (pTHX_ struct coro *coro)
681{
682 size_t rss = sizeof (*coro);
683
684 if (coro->mainstack)
685 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING)
690 {
691 slot = &tmp_slot;
692
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR
696 }
697 else
698 slot = coro->slot;
699
700 if (slot)
701 {
702 rss += sizeof (slot->curstackinfo);
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 }
714 }
715
716 return rss;
717}
718
527/** coroutine stack handling ************************************************/ 719/** coroutine stack handling ************************************************/
528 720
721static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
722static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
723static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
724
725/* apparently < 5.8.8 */
726#ifndef MgPV_nolen_const
727#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
728 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
729 (const char*)(mg)->mg_ptr)
730#endif
731
732/*
733 * This overrides the default magic get method of %SIG elements.
734 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
735 * and instead of tryign to save and restore the hash elements, we just provide
736 * readback here.
737 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
738 * not expecting this to actually change the hook. This is a potential problem
739 * when a schedule happens then, but we ignore this.
740 */
741static int
742coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
743{
744 const char *s = MgPV_nolen_const (mg);
745
746 if (*s == '_')
747 {
748 SV **svp = 0;
749
750 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
751 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
752
753 if (svp)
754 {
755 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
756 return 0;
757 }
758 }
759
760 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
761}
762
763static int
764coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
765{
766 const char *s = MgPV_nolen_const (mg);
767
768 if (*s == '_')
769 {
770 SV **svp = 0;
771
772 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
773 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
774
775 if (svp)
776 {
777 SV *old = *svp;
778 *svp = 0;
779 SvREFCNT_dec (old);
780 return 0;
781 }
782 }
783
784 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
785}
786
787static int
788coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
789{
790 const char *s = MgPV_nolen_const (mg);
791
792 if (*s == '_')
793 {
794 SV **svp = 0;
795
796 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
797 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
798
799 if (svp)
800 {
801 SV *old = *svp;
802 *svp = newSVsv (sv);
803 SvREFCNT_dec (old);
804 return 0;
805 }
806 }
807
808 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
809}
810
529static void 811static void
530setup_coro (struct coro *coro) 812coro_setup (pTHX_ struct coro *coro)
531{ 813{
532 /* 814 /*
533 * emulate part of the perl startup here. 815 * emulate part of the perl startup here.
534 */ 816 */
535
536 coro_init_stacks (); 817 coro_init_stacks (aTHX);
537 818
819 PL_runops = RUNOPS_DEFAULT;
538 PL_curcop = &PL_compiling; 820 PL_curcop = &PL_compiling;
539 PL_in_eval = EVAL_NULL; 821 PL_in_eval = EVAL_NULL;
822 PL_comppad = 0;
540 PL_curpm = 0; 823 PL_curpm = 0;
824 PL_curpad = 0;
541 PL_localizing = 0; 825 PL_localizing = 0;
542 PL_dirty = 0; 826 PL_dirty = 0;
543 PL_restartop = 0; 827 PL_restartop = 0;
828#if PERL_VERSION_ATLEAST (5,10,0)
829 PL_parser = 0;
830#endif
831
832 /* recreate the die/warn hooks */
833 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
834 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
835
836 GvSV (PL_defgv) = newSV (0);
837 GvAV (PL_defgv) = coro->args; coro->args = 0;
838 GvSV (PL_errgv) = newSV (0);
839 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
840 PL_rs = newSVsv (GvSV (irsgv));
841 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
544 842
545 { 843 {
546 dSP; 844 dSP;
547 LOGOP myop; 845 UNOP myop;
548 846
549 SvREFCNT_dec (GvAV (PL_defgv));
550 GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552 Zero (&myop, 1, LOGOP); 847 Zero (&myop, 1, UNOP);
553 myop.op_next = Nullop; 848 myop.op_next = Nullop;
554 myop.op_flags = OPf_WANT_VOID; 849 myop.op_flags = OPf_WANT_VOID;
555 850
556 PUSHMARK (SP); 851 PUSHMARK (SP);
557 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 852 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
558 PUTBACK; 853 PUTBACK;
559 PL_op = (OP *)&myop; 854 PL_op = (OP *)&myop;
560 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 855 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561 SPAGAIN; 856 SPAGAIN;
562 } 857 }
563 858
564 ENTER; /* necessary e.g. for dounwind */ 859 /* this newly created coroutine might be run on an existing cctx which most
860 * likely was suspended in set_stacklevel, called from entersub.
861 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
862 * so we ENTER here for symmetry.
863 */
864 ENTER;
565} 865}
566 866
567static void 867static void
868coro_destruct (pTHX_ struct coro *coro)
869{
870 if (!IN_DESTRUCT)
871 {
872 /* restore all saved variables and stuff */
873 LEAVE_SCOPE (0);
874 assert (PL_tmps_floor == -1);
875
876 /* free all temporaries */
877 FREETMPS;
878 assert (PL_tmps_ix == -1);
879
880 /* unwind all extra stacks */
881 POPSTACK_TO (PL_mainstack);
882
883 /* unwind main stack */
884 dounwind (-1);
885 }
886
887 SvREFCNT_dec (GvSV (PL_defgv));
888 SvREFCNT_dec (GvAV (PL_defgv));
889 SvREFCNT_dec (GvSV (PL_errgv));
890 SvREFCNT_dec (PL_defoutgv);
891 SvREFCNT_dec (PL_rs);
892 SvREFCNT_dec (GvSV (irsgv));
893
894 SvREFCNT_dec (PL_diehook);
895 SvREFCNT_dec (PL_warnhook);
896
897 SvREFCNT_dec (coro->saved_deffh);
898 SvREFCNT_dec (coro->throw);
899
900 coro_destruct_stacks (aTHX);
901}
902
903static void
568free_coro_mortal () 904free_coro_mortal (pTHX)
569{ 905{
570 if (coro_mortal) 906 if (expect_true (coro_mortal))
571 { 907 {
572 SvREFCNT_dec (coro_mortal); 908 SvREFCNT_dec (coro_mortal);
573 coro_mortal = 0; 909 coro_mortal = 0;
574 } 910 }
575} 911}
576 912
913static int
914runops_trace (pTHX)
915{
916 COP *oldcop = 0;
917 int oldcxix = -2;
918 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
919 coro_cctx *cctx = coro->cctx;
920
921 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
922 {
923 PERL_ASYNC_CHECK ();
924
925 if (cctx->flags & CC_TRACE_ALL)
926 {
927 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
928 {
929 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
930 SV **bot, **top;
931 AV *av = newAV (); /* return values */
932 SV **cb;
933 dSP;
934
935 GV *gv = CvGV (cx->blk_sub.cv);
936 SV *fullname = sv_2mortal (newSV (0));
937 if (isGV (gv))
938 gv_efullname3 (fullname, gv, 0);
939
940 bot = PL_stack_base + cx->blk_oldsp + 1;
941 top = cx->blk_gimme == G_ARRAY ? SP + 1
942 : cx->blk_gimme == G_SCALAR ? bot + 1
943 : bot;
944
945 av_extend (av, top - bot);
946 while (bot < top)
947 av_push (av, SvREFCNT_inc_NN (*bot++));
948
949 PL_runops = RUNOPS_DEFAULT;
950 ENTER;
951 SAVETMPS;
952 EXTEND (SP, 3);
953 PUSHMARK (SP);
954 PUSHs (&PL_sv_no);
955 PUSHs (fullname);
956 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
957 PUTBACK;
958 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
959 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
960 SPAGAIN;
961 FREETMPS;
962 LEAVE;
963 PL_runops = runops_trace;
964 }
965
966 if (oldcop != PL_curcop)
967 {
968 oldcop = PL_curcop;
969
970 if (PL_curcop != &PL_compiling)
971 {
972 SV **cb;
973
974 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
975 {
976 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
977
978 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
979 {
980 runops_proc_t old_runops = PL_runops;
981 dSP;
982 GV *gv = CvGV (cx->blk_sub.cv);
983 SV *fullname = sv_2mortal (newSV (0));
984
985 if (isGV (gv))
986 gv_efullname3 (fullname, gv, 0);
987
988 PL_runops = RUNOPS_DEFAULT;
989 ENTER;
990 SAVETMPS;
991 EXTEND (SP, 3);
992 PUSHMARK (SP);
993 PUSHs (&PL_sv_yes);
994 PUSHs (fullname);
995 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
996 PUTBACK;
997 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
998 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
999 SPAGAIN;
1000 FREETMPS;
1001 LEAVE;
1002 PL_runops = runops_trace;
1003 }
1004
1005 oldcxix = cxstack_ix;
1006 }
1007
1008 if (cctx->flags & CC_TRACE_LINE)
1009 {
1010 dSP;
1011
1012 PL_runops = RUNOPS_DEFAULT;
1013 ENTER;
1014 SAVETMPS;
1015 EXTEND (SP, 3);
1016 PL_runops = RUNOPS_DEFAULT;
1017 PUSHMARK (SP);
1018 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1019 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1020 PUTBACK;
1021 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1022 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1023 SPAGAIN;
1024 FREETMPS;
1025 LEAVE;
1026 PL_runops = runops_trace;
1027 }
1028 }
1029 }
1030 }
1031 }
1032
1033 TAINT_NOT;
1034 return 0;
1035}
1036
1037static void
1038prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1039{
1040 ta->prev = (struct coro *)cctx;
1041 ta->next = 0;
1042}
1043
577/* inject a fake call to Coro::State::_cctx_init into the execution */ 1044/* inject a fake call to Coro::State::_cctx_init into the execution */
1045/* _cctx_init should be careful, as it could be called at almost any time */
1046/* during execution of a perl program */
1047/* also initialises PL_top_env */
578static void NOINLINE 1048static void NOINLINE
579prepare_cctx (coro_cctx *cctx) 1049cctx_prepare (pTHX_ coro_cctx *cctx)
580{ 1050{
581 dSP; 1051 dSP;
582 LOGOP myop; 1052 UNOP myop;
583 1053
1054 PL_top_env = &PL_start_env;
1055
1056 if (cctx->flags & CC_TRACE)
1057 PL_runops = runops_trace;
1058
584 Zero (&myop, 1, LOGOP); 1059 Zero (&myop, 1, UNOP);
585 myop.op_next = PL_op; 1060 myop.op_next = PL_op;
586 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1061 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
587 1062
588 PUSHMARK (SP); 1063 PUSHMARK (SP);
589 EXTEND (SP, 2); 1064 EXTEND (SP, 2);
590 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1065 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
591 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1066 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
592 PUTBACK; 1067 PUTBACK;
593 PL_op = (OP *)&myop; 1068 PL_op = (OP *)&myop;
594 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1069 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595 SPAGAIN; 1070 SPAGAIN;
596} 1071}
597 1072
1073/* the tail of transfer: execute stuff we can onyl do afetr a transfer */
598static void 1074static void
599coro_run (void *arg) 1075transfer_tail (void)
600{ 1076{
601 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1077 struct coro *next = (struct coro *)transfer_next;
1078 transfer_next = 0; //D for temporary assertion in transfer
1079 assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D
1080
1081 free_coro_mortal (aTHX);
602 UNLOCK; 1082 UNLOCK;
603 1083
604 /* 1084 if (expect_false (next->throw))
1085 {
1086 SV *exception = sv_2mortal (next->throw);
1087
1088 next->throw = 0;
1089 sv_setsv (ERRSV, exception);
1090 croak (0);
1091 }
1092}
1093
1094/*
605 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
606 */ 1096 */
607 PL_top_env = &PL_start_env; 1097static void
1098cctx_run (void *arg)
1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
1106 dTHX;
608 1107
1108 /* entersub called ENTER, but we never 'returned', undo that here */
1109 LEAVE;
1110
1111 /* we now skip the entersub that did lead to transfer() */
1112 PL_op = PL_op->op_next;
1113
609 /* inject call to cctx_init */ 1114 /* inject a fake subroutine call to cctx_init */
610 prepare_cctx ((coro_cctx *)arg); 1115 cctx_prepare (aTHX_ (coro_cctx *)arg);
611 1116
1117 /* cctx_run is the alternative tail of transfer() */
1118 transfer_tail ();
1119
612 /* somebody will hit me for both perl_run and PL_restartop */ 1120 /* somebody or something will hit me for both perl_run and PL_restartop */
613 PL_restartop = PL_op; 1121 PL_restartop = PL_op;
614 perl_run (PL_curinterp); 1122 perl_run (PL_curinterp);
615 1123
616 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1124 /*
617 abort (); 1125 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the
1128 * bootstrap-time "top" top_env, as we cannot restore the "main"
1129 * coroutine as Coro has no such concept
1130 */
1131 PL_top_env = main_top_env;
1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 }
618} 1134}
619 1135
620static coro_cctx * 1136static coro_cctx *
621cctx_new () 1137cctx_new ()
622{ 1138{
623 coro_cctx *cctx; 1139 coro_cctx *cctx;
624 1140
625 ++cctx_count; 1141 ++cctx_count;
626
627 Newz (0, cctx, 1, coro_cctx); 1142 New (0, cctx, 1, coro_cctx);
1143
1144 cctx->gen = cctx_gen;
1145 cctx->flags = 0;
1146 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1147
1148 return cctx;
1149}
1150
1151/* create a new cctx only suitable as source */
1152static coro_cctx *
1153cctx_new_empty ()
1154{
1155 coro_cctx *cctx = cctx_new ();
1156
1157 cctx->sptr = 0;
1158 coro_create (&cctx->cctx, 0, 0, 0, 0);
1159
1160 return cctx;
1161}
1162
1163/* create a new cctx suitable as destination/running a perl interpreter */
1164static coro_cctx *
1165cctx_new_run ()
1166{
1167 coro_cctx *cctx = cctx_new ();
1168 void *stack_start;
1169 size_t stack_size;
628 1170
629#if HAVE_MMAP 1171#if HAVE_MMAP
630
631 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1172 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632 /* mmap supposedly does allocate-on-write for us */ 1173 /* mmap supposedly does allocate-on-write for us */
633 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
634 1175
635 if (cctx->sptr == (void *)-1) 1176 if (cctx->sptr != (void *)-1)
636 {
637 perror ("FATAL: unable to mmap stack for coroutine");
638 _exit (EXIT_FAILURE);
639 } 1177 {
640
641# if STACKGUARD 1178# if CORO_STACKGUARD
642 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
643# endif 1180# endif
1181 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183 cctx->flags |= CC_MAPPED;
1184 }
1185 else
1186#endif
1187 {
1188 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189 New (0, cctx->sptr, cctx_stacksize, long);
644 1190
645#else
646
647 cctx->ssize = STACKSIZE * (long)sizeof (long);
648 New (0, cctx->sptr, STACKSIZE, long);
649
650 if (!cctx->sptr) 1191 if (!cctx->sptr)
651 { 1192 {
652 perror ("FATAL: unable to malloc stack for coroutine"); 1193 perror ("FATAL: unable to allocate stack for coroutine");
653 _exit (EXIT_FAILURE); 1194 _exit (EXIT_FAILURE);
654 } 1195 }
655 1196
656#endif 1197 stack_start = cctx->sptr;
1198 stack_size = cctx->ssize;
1199 }
657 1200
658#if USE_VALGRIND 1201 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
659 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1202 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
660 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
661 cctx->ssize + (char *)cctx->sptr
662 );
663#endif
664
665 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
666 1203
667 return cctx; 1204 return cctx;
668} 1205}
669 1206
670static void 1207static void
… …
672{ 1209{
673 if (!cctx) 1210 if (!cctx)
674 return; 1211 return;
675 1212
676 --cctx_count; 1213 --cctx_count;
1214 coro_destroy (&cctx->cctx);
677 1215
1216 /* coro_transfer creates new, empty cctx's */
1217 if (cctx->sptr)
1218 {
678#if USE_VALGRIND 1219#if CORO_USE_VALGRIND
679 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1220 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680#endif 1221#endif
681 1222
682#if HAVE_MMAP 1223#if HAVE_MMAP
1224 if (cctx->flags & CC_MAPPED)
683 munmap (cctx->sptr, cctx->ssize); 1225 munmap (cctx->sptr, cctx->ssize);
684#else 1226 else
1227#endif
685 Safefree (cctx->sptr); 1228 Safefree (cctx->sptr);
686#endif 1229 }
687 1230
688 Safefree (cctx); 1231 Safefree (cctx);
689} 1232}
690 1233
1234/* wether this cctx should be destructed */
1235#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1236
691static coro_cctx * 1237static coro_cctx *
692cctx_get () 1238cctx_get (pTHX)
693{ 1239{
694 coro_cctx *cctx; 1240 while (expect_true (cctx_first))
695
696 if (cctx_first)
697 { 1241 {
698 cctx = cctx_first; 1242 coro_cctx *cctx = cctx_first;
699 cctx_first = cctx->next; 1243 cctx_first = cctx->next;
700 --cctx_idle; 1244 --cctx_idle;
701 } 1245
702 else 1246 if (expect_true (!CCTX_EXPIRED (cctx)))
703 { 1247 return cctx;
704 cctx = cctx_new (); 1248
705 PL_op = PL_op->op_next; 1249 cctx_destroy (cctx);
706 } 1250 }
707 1251
708 return cctx; 1252 return cctx_new_run ();
709} 1253}
710 1254
711static void 1255static void
712cctx_put (coro_cctx *cctx) 1256cctx_put (coro_cctx *cctx)
713{ 1257{
1258 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1259
714 /* free another cctx if overlimit */ 1260 /* free another cctx if overlimit */
715 if (cctx_idle >= MAX_IDLE_CCTX) 1261 if (expect_false (cctx_idle >= cctx_max_idle))
716 { 1262 {
717 coro_cctx *first = cctx_first; 1263 coro_cctx *first = cctx_first;
718 cctx_first = first->next; 1264 cctx_first = first->next;
719 --cctx_idle; 1265 --cctx_idle;
720 1266
721 assert (!first->inuse);
722 cctx_destroy (first); 1267 cctx_destroy (first);
723 } 1268 }
724 1269
725 ++cctx_idle; 1270 ++cctx_idle;
726 cctx->next = cctx_first; 1271 cctx->next = cctx_first;
727 cctx_first = cctx; 1272 cctx_first = cctx;
728} 1273}
729 1274
730/** coroutine switching *****************************************************/ 1275/** coroutine switching *****************************************************/
731 1276
732/* never call directly, always through the coro_state_transfer global variable */ 1277static void
1278transfer_check (pTHX_ struct coro *prev, struct coro *next)
1279{
1280 if (expect_true (prev != next))
1281 {
1282 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1283 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1284
1285 if (expect_false (next->flags & CF_RUNNING))
1286 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1287
1288 if (expect_false (next->flags & CF_DESTROYED))
1289 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1290
1291#if !PERL_VERSION_ATLEAST (5,10,0)
1292 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1293 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1294#endif
1295 }
1296}
1297
1298/* always use the TRANSFER macro */
733static void NOINLINE 1299static void NOINLINE
734transfer (struct coro *prev, struct coro *next) 1300transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
735{ 1301{
736 dSTACKLEVEL; 1302 dSTACKLEVEL;
737 1303
738 /* sometimes transfer is only called to set idle_sp */ 1304 /* sometimes transfer is only called to set idle_sp */
739 if (!next) 1305 if (expect_false (!next))
740 { 1306 {
741 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1307 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
742 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1308 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
743 } 1309 }
744 else if (prev != next) 1310 else if (expect_true (prev != next))
745 { 1311 {
746 coro_cctx *prev__cctx; 1312 coro_cctx *prev__cctx;
747 1313
748 if (prev->flags & CF_NEW) 1314 if (expect_false (prev->flags & CF_NEW))
749 { 1315 {
750 /* create a new empty context */ 1316 /* create a new empty/source context */
751 Newz (0, prev->cctx, 1, coro_cctx); 1317 prev->cctx = cctx_new_empty ();
752 prev->cctx->inuse = 1;
753 prev->flags &= ~CF_NEW; 1318 prev->flags &= ~CF_NEW;
754 prev->flags |= CF_RUNNING; 1319 prev->flags |= CF_RUNNING;
755 } 1320 }
756 1321
757 /*TODO: must not croak here */
758 if (!prev->flags & CF_RUNNING)
759 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
760
761 if (next->flags & CF_RUNNING)
762 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
763
764 if (next->flags & CF_DESTROYED)
765 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
766
767 prev->flags &= ~CF_RUNNING; 1322 prev->flags &= ~CF_RUNNING;
768 next->flags |= CF_RUNNING; 1323 next->flags |= CF_RUNNING;
769 1324
770 LOCK; 1325 LOCK;
771 1326
1327 /* first get rid of the old state */
1328 save_perl (aTHX_ prev);
1329
772 if (next->flags & CF_NEW) 1330 if (expect_false (next->flags & CF_NEW))
773 { 1331 {
774 /* need to start coroutine */ 1332 /* need to start coroutine */
775 next->flags &= ~CF_NEW; 1333 next->flags &= ~CF_NEW;
776 /* first get rid of the old state */
777 save_perl (prev);
778 /* setup coroutine call */ 1334 /* setup coroutine call */
779 setup_coro (next); 1335 coro_setup (aTHX_ next);
780 /* need a new stack */
781 assert (!next->cctx);
782 } 1336 }
783 else 1337 else
784 {
785 /* coroutine already started */
786 save_perl (prev);
787 load_perl (next); 1338 load_perl (aTHX_ next);
788 }
789 1339
790 prev__cctx = prev->cctx; 1340 prev__cctx = prev->cctx;
791 1341
792 /* possibly "free" the cctx */ 1342 /* possibly "free" the cctx */
1343 if (expect_true (
793 if (prev__cctx->idle_sp == STACKLEVEL) 1344 prev__cctx->idle_sp == STACKLEVEL
1345 && !(prev__cctx->flags & CC_TRACE)
1346 && !force_cctx
1347 ))
794 { 1348 {
795 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1349 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
796 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1350 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
797 1351
798 prev->cctx = 0; 1352 prev->cctx = 0;
799 1353
1354 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1355 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1356 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1357 if (!next->cctx)
1358 next->cctx = cctx_get (aTHX);
1359
800 cctx_put (prev__cctx); 1360 cctx_put (prev__cctx);
801 prev__cctx->inuse = 0;
802 } 1361 }
803 1362
1363 ++next->usecount;
1364
804 if (!next->cctx) 1365 if (expect_true (!next->cctx))
805 {
806 next->cctx = cctx_get (); 1366 next->cctx = cctx_get (aTHX);
807 assert (!next->cctx->inuse);
808 next->cctx->inuse = 1;
809 }
810 1367
1368 assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D
1369 transfer_next = next;
1370
811 if (prev__cctx != next->cctx) 1371 if (expect_false (prev__cctx != next->cctx))
812 { 1372 {
813 prev__cctx->top_env = PL_top_env; 1373 prev__cctx->top_env = PL_top_env;
814 PL_top_env = next->cctx->top_env; 1374 PL_top_env = next->cctx->top_env;
815 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1375 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816 } 1376 }
817 1377
818 free_coro_mortal (); 1378 transfer_tail ();
819 UNLOCK;
820 } 1379 }
821} 1380}
822 1381
823struct transfer_args 1382#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
824{
825 struct coro *prev, *next;
826};
827
828#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1383#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829 1384
830/** high level stuff ********************************************************/ 1385/** high level stuff ********************************************************/
831 1386
832static int 1387static int
833coro_state_destroy (struct coro *coro) 1388coro_state_destroy (pTHX_ struct coro *coro)
834{ 1389{
835 if (coro->flags & CF_DESTROYED) 1390 if (coro->flags & CF_DESTROYED)
836 return 0; 1391 return 0;
837 1392
838 coro->flags |= CF_DESTROYED; 1393 coro->flags |= CF_DESTROYED;
… …
848 else 1403 else
849 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1404 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
850 1405
851 if (coro->mainstack && coro->mainstack != main_mainstack) 1406 if (coro->mainstack && coro->mainstack != main_mainstack)
852 { 1407 {
853 assert (!(coro->flags & CF_RUNNING));
854
855 struct coro temp; 1408 struct coro temp;
856 Zero (&temp, 1, struct coro);
857 temp.save = CORO_SAVE_ALL;
858 1409
859 if (coro->flags & CF_RUNNING) 1410 if (coro->flags & CF_RUNNING)
860 croak ("FATAL: tried to destroy currently running coroutine"); 1411 croak ("FATAL: tried to destroy currently running coroutine");
861 1412
862 save_perl (&temp); 1413 save_perl (aTHX_ &temp);
863 load_perl (coro); 1414 load_perl (aTHX_ coro);
864 1415
865 coro_destroy_stacks (); 1416 coro_destruct (aTHX_ coro);
866 1417
867 load_perl (&temp); /* this will get rid of defsv etc.. */ 1418 load_perl (aTHX_ &temp);
868 1419
869 coro->mainstack = 0; 1420 coro->slot = 0;
870 } 1421 }
871 1422
872 cctx_destroy (coro->cctx); 1423 cctx_destroy (coro->cctx);
873 SvREFCNT_dec (coro->args); 1424 SvREFCNT_dec (coro->args);
874 1425
1426 if (coro->next) coro->next->prev = coro->prev;
1427 if (coro->prev) coro->prev->next = coro->next;
1428 if (coro == coro_first) coro_first = coro->next;
1429
875 return 1; 1430 return 1;
876} 1431}
877 1432
878static int 1433static int
879coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1434coro_state_free (pTHX_ SV *sv, MAGIC *mg)
880{ 1435{
881 struct coro *coro = (struct coro *)mg->mg_ptr; 1436 struct coro *coro = (struct coro *)mg->mg_ptr;
882 mg->mg_ptr = 0; 1437 mg->mg_ptr = 0;
883 1438
1439 coro->hv = 0;
1440
884 if (--coro->refcnt < 0) 1441 if (--coro->refcnt < 0)
885 { 1442 {
886 coro_state_destroy (coro); 1443 coro_state_destroy (aTHX_ coro);
887 Safefree (coro); 1444 Safefree (coro);
888 } 1445 }
889 1446
890 return 0; 1447 return 0;
891} 1448}
… …
909#else 1466#else
910# define MGf_DUP 0 1467# define MGf_DUP 0
911#endif 1468#endif
912}; 1469};
913 1470
914static struct coro *
915SvSTATE (SV *coro)
916{
917 HV *stash;
918 MAGIC *mg;
919
920 if (SvROK (coro))
921 coro = SvRV (coro);
922
923 stash = SvSTASH (coro);
924 if (stash != coro_stash && stash != coro_state_stash)
925 {
926 /* very slow, but rare, check */
927 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
928 croak ("Coro::State object required");
929 }
930
931 mg = SvMAGIC (coro);
932 assert (mg->mg_type == PERL_MAGIC_ext);
933 return (struct coro *)mg->mg_ptr;
934}
935
936static void 1471static void
937prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1472prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
938{ 1473{
939 ta->prev = SvSTATE (prev_sv); 1474 ta->prev = SvSTATE (prev_sv);
940 ta->next = SvSTATE (next_sv); 1475 ta->next = SvSTATE (next_sv);
1476 TRANSFER_CHECK (*ta);
941} 1477}
942 1478
943static void 1479static void
944api_transfer (SV *prev_sv, SV *next_sv) 1480api_transfer (SV *prev_sv, SV *next_sv)
945{ 1481{
1482 dTHX;
946 struct transfer_args ta; 1483 struct transfer_args ta;
947 1484
948 prepare_transfer (&ta, prev_sv, next_sv); 1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
949 TRANSFER (ta); 1486 TRANSFER (ta, 1);
950}
951
952static int
953api_save (SV *coro_sv, int new_save)
954{
955 struct coro *coro = SvSTATE (coro_sv);
956 int old_save = coro->save;
957
958 if (new_save >= 0)
959 coro->save = new_save;
960
961 return old_save;
962} 1487}
963 1488
964/** Coro ********************************************************************/ 1489/** Coro ********************************************************************/
965 1490
966static void 1491static void
967coro_enq (SV *coro_sv) 1492coro_enq (pTHX_ SV *coro_sv)
968{ 1493{
969 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
970} 1495}
971 1496
972static SV * 1497static SV *
973coro_deq (int min_prio) 1498coro_deq (pTHX)
974{ 1499{
975 int prio = PRIO_MAX - PRIO_MIN; 1500 int prio;
976 1501
977 min_prio -= PRIO_MIN;
978 if (min_prio < 0)
979 min_prio = 0;
980
981 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
982 if (AvFILLp (coro_ready [prio]) >= 0) 1503 if (AvFILLp (coro_ready [prio]) >= 0)
983 return av_shift (coro_ready [prio]); 1504 return av_shift (coro_ready [prio]);
984 1505
985 return 0; 1506 return 0;
986} 1507}
987 1508
988static int 1509static int
989api_ready (SV *coro_sv) 1510api_ready (SV *coro_sv)
990{ 1511{
1512 dTHX;
991 struct coro *coro; 1513 struct coro *coro;
1514 SV *sv_hook;
1515 void (*xs_hook)(void);
992 1516
993 if (SvROK (coro_sv)) 1517 if (SvROK (coro_sv))
994 coro_sv = SvRV (coro_sv); 1518 coro_sv = SvRV (coro_sv);
995 1519
996 coro = SvSTATE (coro_sv); 1520 coro = SvSTATE (coro_sv);
… …
999 return 0; 1523 return 0;
1000 1524
1001 coro->flags |= CF_READY; 1525 coro->flags |= CF_READY;
1002 1526
1003 LOCK; 1527 LOCK;
1528
1529 sv_hook = coro_nready ? 0 : coro_readyhook;
1530 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1531
1004 coro_enq (SvREFCNT_inc (coro_sv)); 1532 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1005 ++coro_nready; 1533 ++coro_nready;
1534
1006 UNLOCK; 1535 UNLOCK;
1536
1537 if (sv_hook)
1538 {
1539 dSP;
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1007 1555
1008 return 1; 1556 return 1;
1009} 1557}
1010 1558
1011static int 1559static int
1012api_is_ready (SV *coro_sv) 1560api_is_ready (SV *coro_sv)
1013{ 1561{
1562 dTHX;
1014 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1563 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1015} 1564}
1016 1565
1017static void 1566static void
1018prepare_schedule (struct transfer_args *ta) 1567prepare_schedule (pTHX_ struct transfer_args *ta)
1019{ 1568{
1020 SV *prev_sv, *next_sv; 1569 SV *prev_sv, *next_sv;
1021 1570
1022 for (;;) 1571 for (;;)
1023 { 1572 {
1024 LOCK; 1573 LOCK;
1025 next_sv = coro_deq (PRIO_MIN); 1574 next_sv = coro_deq (aTHX);
1026 1575
1027 /* nothing to schedule: call the idle handler */ 1576 /* nothing to schedule: call the idle handler */
1028 if (!next_sv) 1577 if (expect_false (!next_sv))
1029 { 1578 {
1579 dSP;
1030 UNLOCK; 1580 UNLOCK;
1031 dSP;
1032 1581
1033 ENTER; 1582 ENTER;
1034 SAVETMPS; 1583 SAVETMPS;
1035 1584
1036 PUSHMARK (SP); 1585 PUSHMARK (SP);
1037 PUTBACK; 1586 PUTBACK;
1038 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1587 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1588 SPAGAIN;
1039 1589
1040 FREETMPS; 1590 FREETMPS;
1041 LEAVE; 1591 LEAVE;
1042 continue; 1592 continue;
1043 } 1593 }
1044 1594
1045 ta->next = SvSTATE (next_sv); 1595 ta->next = SvSTATE (next_sv);
1046 1596
1047 /* cannot transfer to destroyed coros, skip and look for next */ 1597 /* cannot transfer to destroyed coros, skip and look for next */
1048 if (ta->next->flags & CF_DESTROYED) 1598 if (expect_false (ta->next->flags & CF_DESTROYED))
1049 { 1599 {
1050 UNLOCK; 1600 UNLOCK;
1051 SvREFCNT_dec (next_sv); 1601 SvREFCNT_dec (next_sv);
1052 /* coro_nready is already taken care of by destroy */ 1602 /* coro_nready has already been taken care of by destroy */
1053 continue; 1603 continue;
1054 } 1604 }
1055 1605
1056 --coro_nready; 1606 --coro_nready;
1057 UNLOCK; 1607 UNLOCK;
1058 break; 1608 break;
1059 } 1609 }
1060 1610
1061 /* free this only after the transfer */ 1611 /* free this only after the transfer */
1062 prev_sv = SvRV (coro_current); 1612 prev_sv = SvRV (coro_current);
1063 SvRV_set (coro_current, next_sv);
1064 ta->prev = SvSTATE (prev_sv); 1613 ta->prev = SvSTATE (prev_sv);
1065 1614 TRANSFER_CHECK (*ta);
1066 assert (ta->next->flags & CF_READY); 1615 assert (ta->next->flags & CF_READY);
1067 ta->next->flags &= ~CF_READY; 1616 ta->next->flags &= ~CF_READY;
1617 SvRV_set (coro_current, next_sv);
1068 1618
1069 LOCK; 1619 LOCK;
1070 free_coro_mortal (); 1620 free_coro_mortal (aTHX);
1071 coro_mortal = prev_sv; 1621 coro_mortal = prev_sv;
1072 UNLOCK; 1622 UNLOCK;
1073} 1623}
1074 1624
1075static void 1625static void
1076prepare_cede (struct transfer_args *ta) 1626prepare_cede (pTHX_ struct transfer_args *ta)
1077{ 1627{
1078 api_ready (coro_current); 1628 api_ready (coro_current);
1079 prepare_schedule (ta); 1629 prepare_schedule (aTHX_ ta);
1080} 1630}
1081 1631
1082static int 1632static int
1083prepare_cede_notself (struct transfer_args *ta) 1633prepare_cede_notself (pTHX_ struct transfer_args *ta)
1084{ 1634{
1085 if (coro_nready) 1635 if (coro_nready)
1086 { 1636 {
1087 SV *prev = SvRV (coro_current); 1637 SV *prev = SvRV (coro_current);
1088 prepare_schedule (ta); 1638 prepare_schedule (aTHX_ ta);
1089 api_ready (prev); 1639 api_ready (prev);
1090 return 1; 1640 return 1;
1091 } 1641 }
1092 else 1642 else
1093 return 0; 1643 return 0;
1094} 1644}
1095 1645
1096static void 1646static void
1097api_schedule (void) 1647api_schedule (void)
1098{ 1648{
1649 dTHX;
1099 struct transfer_args ta; 1650 struct transfer_args ta;
1100 1651
1101 prepare_schedule (&ta); 1652 prepare_schedule (aTHX_ &ta);
1102 TRANSFER (ta); 1653 TRANSFER (ta, 1);
1103} 1654}
1104 1655
1105static int 1656static int
1106api_cede (void) 1657api_cede (void)
1107{ 1658{
1659 dTHX;
1108 struct transfer_args ta; 1660 struct transfer_args ta;
1109 1661
1110 prepare_cede (&ta); 1662 prepare_cede (aTHX_ &ta);
1111 1663
1112 if (ta.prev != ta.next) 1664 if (expect_true (ta.prev != ta.next))
1113 { 1665 {
1114 TRANSFER (ta); 1666 TRANSFER (ta, 1);
1115 return 1; 1667 return 1;
1116 } 1668 }
1117 else 1669 else
1118 return 0; 1670 return 0;
1119} 1671}
1120 1672
1121static int 1673static int
1122api_cede_notself (void) 1674api_cede_notself (void)
1123{ 1675{
1676 dTHX;
1124 struct transfer_args ta; 1677 struct transfer_args ta;
1125 1678
1126 if (prepare_cede_notself (&ta)) 1679 if (prepare_cede_notself (aTHX_ &ta))
1127 { 1680 {
1128 TRANSFER (ta); 1681 TRANSFER (ta, 1);
1129 return 1; 1682 return 1;
1130 } 1683 }
1131 else 1684 else
1132 return 0; 1685 return 0;
1133} 1686}
1134 1687
1688static void
1689api_trace (SV *coro_sv, int flags)
1690{
1691 dTHX;
1692 struct coro *coro = SvSTATE (coro_sv);
1693
1694 if (flags & CC_TRACE)
1695 {
1696 if (!coro->cctx)
1697 coro->cctx = cctx_new_run ();
1698 else if (!(coro->cctx->flags & CC_TRACE))
1699 croak ("cannot enable tracing on coroutine with custom stack");
1700
1701 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1702 }
1703 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1704 {
1705 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1706
1707 if (coro->flags & CF_RUNNING)
1708 PL_runops = RUNOPS_DEFAULT;
1709 else
1710 coro->slot->runops = RUNOPS_DEFAULT;
1711 }
1712}
1713
1714#if 0
1715static int
1716coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1717{
1718 AV *padlist;
1719 AV *av = (AV *)mg->mg_obj;
1720
1721 abort ();
1722
1723 return 0;
1724}
1725
1726static MGVTBL coro_gensub_vtbl = {
1727 0, 0, 0, 0,
1728 coro_gensub_free
1729};
1730#endif
1731
1732/*****************************************************************************/
1733/* PerlIO::cede */
1734
1735typedef struct
1736{
1737 PerlIOBuf base;
1738 NV next, every;
1739} PerlIOCede;
1740
1741static IV
1742PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1743{
1744 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1745
1746 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1747 self->next = nvtime () + self->every;
1748
1749 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1750}
1751
1752static SV *
1753PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1754{
1755 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1756
1757 return newSVnv (self->every);
1758}
1759
1760static IV
1761PerlIOCede_flush (pTHX_ PerlIO *f)
1762{
1763 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1764 double now = nvtime ();
1765
1766 if (now >= self->next)
1767 {
1768 api_cede ();
1769 self->next = now + self->every;
1770 }
1771
1772 return PerlIOBuf_flush (aTHX_ f);
1773}
1774
1775static PerlIO_funcs PerlIO_cede =
1776{
1777 sizeof(PerlIO_funcs),
1778 "cede",
1779 sizeof(PerlIOCede),
1780 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1781 PerlIOCede_pushed,
1782 PerlIOBuf_popped,
1783 PerlIOBuf_open,
1784 PerlIOBase_binmode,
1785 PerlIOCede_getarg,
1786 PerlIOBase_fileno,
1787 PerlIOBuf_dup,
1788 PerlIOBuf_read,
1789 PerlIOBuf_unread,
1790 PerlIOBuf_write,
1791 PerlIOBuf_seek,
1792 PerlIOBuf_tell,
1793 PerlIOBuf_close,
1794 PerlIOCede_flush,
1795 PerlIOBuf_fill,
1796 PerlIOBase_eof,
1797 PerlIOBase_error,
1798 PerlIOBase_clearerr,
1799 PerlIOBase_setlinebuf,
1800 PerlIOBuf_get_base,
1801 PerlIOBuf_bufsiz,
1802 PerlIOBuf_get_ptr,
1803 PerlIOBuf_get_cnt,
1804 PerlIOBuf_set_ptrcnt,
1805};
1806
1807
1135MODULE = Coro::State PACKAGE = Coro::State 1808MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1136 1809
1137PROTOTYPES: DISABLE 1810PROTOTYPES: DISABLE
1138 1811
1139BOOT: 1812BOOT:
1140{ 1813{
1141#ifdef USE_ITHREADS 1814#ifdef USE_ITHREADS
1142 MUTEX_INIT (&coro_mutex); 1815 MUTEX_INIT (&coro_lock);
1816# if CORO_PTHREAD
1817 coro_thx = PERL_GET_CONTEXT;
1818# endif
1143#endif 1819#endif
1144 BOOT_PAGESIZE; 1820 BOOT_PAGESIZE;
1145 1821
1822 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1823 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1824
1825 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1826 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1827 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1828
1829 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1830 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1831 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1832
1146 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1833 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1147 1834
1835 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1836 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1148 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1837 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1149 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1150 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1151 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1152 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1838 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1153 1839
1154 main_mainstack = PL_mainstack; 1840 main_mainstack = PL_mainstack;
1841 main_top_env = PL_top_env;
1155 1842
1843 while (main_top_env->je_prev)
1844 main_top_env = main_top_env->je_prev;
1845
1156 coroapi.ver = CORO_API_VERSION; 1846 coroapi.ver = CORO_API_VERSION;
1847 coroapi.rev = CORO_API_REVISION;
1157 coroapi.transfer = api_transfer; 1848 coroapi.transfer = api_transfer;
1849
1850 {
1851 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1852
1853 if (!svp) croak ("Time::HiRes is required");
1854 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1855
1856 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1857 }
1158 1858
1159 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1859 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1160} 1860}
1161 1861
1162SV * 1862SV *
1163new (char *klass, ...) 1863new (char *klass, ...)
1164 CODE: 1864 CODE:
1165{ 1865{
1166 struct coro *coro; 1866 struct coro *coro;
1867 MAGIC *mg;
1167 HV *hv; 1868 HV *hv;
1168 int i; 1869 int i;
1169 1870
1170 Newz (0, coro, 1, struct coro); 1871 Newz (0, coro, 1, struct coro);
1171 coro->args = newAV (); 1872 coro->args = newAV ();
1172 coro->save = CORO_SAVE_ALL;
1173 coro->flags = CF_NEW; 1873 coro->flags = CF_NEW;
1174 1874
1875 if (coro_first) coro_first->prev = coro;
1876 coro->next = coro_first;
1877 coro_first = coro;
1878
1175 hv = newHV (); 1879 coro->hv = hv = newHV ();
1176 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1880 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1881 mg->mg_flags |= MGf_DUP;
1177 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1882 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1178 1883
1884 av_extend (coro->args, items - 1);
1179 for (i = 1; i < items; i++) 1885 for (i = 1; i < items; i++)
1180 av_push (coro->args, newSVsv (ST (i))); 1886 av_push (coro->args, newSVsv (ST (i)));
1181} 1887}
1182 OUTPUT: 1888 OUTPUT:
1183 RETVAL 1889 RETVAL
1184 1890
1185int 1891# these not obviously related functions are all rolled into the same xs
1186save (SV *coro, int new_save = -1) 1892# function to increase chances that they all will call transfer with the same
1187 CODE: 1893# stack offset
1188 RETVAL = api_save (coro, new_save);
1189 OUTPUT:
1190 RETVAL
1191
1192void 1894void
1193_set_stacklevel (...) 1895_set_stacklevel (...)
1194 ALIAS: 1896 ALIAS:
1195 Coro::State::transfer = 1 1897 Coro::State::transfer = 1
1196 Coro::schedule = 2 1898 Coro::schedule = 2
… …
1198 Coro::cede_notself = 4 1900 Coro::cede_notself = 4
1199 CODE: 1901 CODE:
1200{ 1902{
1201 struct transfer_args ta; 1903 struct transfer_args ta;
1202 1904
1905 PUTBACK;
1203 switch (ix) 1906 switch (ix)
1204 { 1907 {
1205 case 0: 1908 case 0:
1206 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1909 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
1207 ta.next = 0;
1208 break; 1910 break;
1209 1911
1210 case 1: 1912 case 1:
1211 if (items != 2) 1913 if (items != 2)
1212 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1914 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1213 1915
1214 prepare_transfer (&ta, ST (0), ST (1)); 1916 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1215 break; 1917 break;
1216 1918
1217 case 2: 1919 case 2:
1218 prepare_schedule (&ta); 1920 prepare_schedule (aTHX_ &ta);
1219 break; 1921 break;
1220 1922
1221 case 3: 1923 case 3:
1222 prepare_cede (&ta); 1924 prepare_cede (aTHX_ &ta);
1223 break; 1925 break;
1224 1926
1225 case 4: 1927 case 4:
1226 if (!prepare_cede_notself (&ta)) 1928 if (!prepare_cede_notself (aTHX_ &ta))
1227 XSRETURN_EMPTY; 1929 XSRETURN_EMPTY;
1228 1930
1229 break; 1931 break;
1230 } 1932 }
1933 SPAGAIN;
1231 1934
1232 BARRIER; 1935 BARRIER;
1936 PUTBACK;
1233 TRANSFER (ta); 1937 TRANSFER (ta, 0);
1234 1938 SPAGAIN; /* might be the sp of a different coroutine now */
1235 if (GIMME_V != G_VOID && ta.next != ta.prev) 1939 /* be extra careful not to ever do anything after TRANSFER */
1236 XSRETURN_YES;
1237} 1940}
1238 1941
1239bool 1942bool
1240_destroy (SV *coro_sv) 1943_destroy (SV *coro_sv)
1241 CODE: 1944 CODE:
1242 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1945 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1243 OUTPUT: 1946 OUTPUT:
1244 RETVAL 1947 RETVAL
1245 1948
1246void 1949void
1247_exit (code) 1950_exit (int code)
1248 int code
1249 PROTOTYPE: $ 1951 PROTOTYPE: $
1250 CODE: 1952 CODE:
1251 _exit (code); 1953 _exit (code);
1954
1955int
1956cctx_stacksize (int new_stacksize = 0)
1957 CODE:
1958 RETVAL = cctx_stacksize;
1959 if (new_stacksize)
1960 {
1961 cctx_stacksize = new_stacksize;
1962 ++cctx_gen;
1963 }
1964 OUTPUT:
1965 RETVAL
1966
1967int
1968cctx_max_idle (int max_idle = 0)
1969 CODE:
1970 RETVAL = cctx_max_idle;
1971 if (max_idle > 1)
1972 cctx_max_idle = max_idle;
1973 OUTPUT:
1974 RETVAL
1252 1975
1253int 1976int
1254cctx_count () 1977cctx_count ()
1255 CODE: 1978 CODE:
1256 RETVAL = cctx_count; 1979 RETVAL = cctx_count;
… …
1262 CODE: 1985 CODE:
1263 RETVAL = cctx_idle; 1986 RETVAL = cctx_idle;
1264 OUTPUT: 1987 OUTPUT:
1265 RETVAL 1988 RETVAL
1266 1989
1990void
1991list ()
1992 PPCODE:
1993{
1994 struct coro *coro;
1995 for (coro = coro_first; coro; coro = coro->next)
1996 if (coro->hv)
1997 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1998}
1999
2000void
2001call (Coro::State coro, SV *coderef)
2002 ALIAS:
2003 eval = 1
2004 CODE:
2005{
2006 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2007 {
2008 struct coro temp;
2009
2010 if (!(coro->flags & CF_RUNNING))
2011 {
2012 PUTBACK;
2013 save_perl (aTHX_ &temp);
2014 load_perl (aTHX_ coro);
2015 }
2016
2017 {
2018 dSP;
2019 ENTER;
2020 SAVETMPS;
2021 PUTBACK;
2022 PUSHSTACK;
2023 PUSHMARK (SP);
2024
2025 if (ix)
2026 eval_sv (coderef, 0);
2027 else
2028 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2029
2030 POPSTACK;
2031 SPAGAIN;
2032 FREETMPS;
2033 LEAVE;
2034 PUTBACK;
2035 }
2036
2037 if (!(coro->flags & CF_RUNNING))
2038 {
2039 save_perl (aTHX_ coro);
2040 load_perl (aTHX_ &temp);
2041 SPAGAIN;
2042 }
2043 }
2044}
2045
2046SV *
2047is_ready (Coro::State coro)
2048 PROTOTYPE: $
2049 ALIAS:
2050 is_ready = CF_READY
2051 is_running = CF_RUNNING
2052 is_new = CF_NEW
2053 is_destroyed = CF_DESTROYED
2054 CODE:
2055 RETVAL = boolSV (coro->flags & ix);
2056 OUTPUT:
2057 RETVAL
2058
2059void
2060throw (Coro::State self, SV *throw = &PL_sv_undef)
2061 PROTOTYPE: $;$
2062 CODE:
2063 SvREFCNT_dec (self->throw);
2064 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2065
2066void
2067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2068
2069SV *
2070has_cctx (Coro::State coro)
2071 PROTOTYPE: $
2072 CODE:
2073 RETVAL = boolSV (!!coro->cctx);
2074 OUTPUT:
2075 RETVAL
2076
2077int
2078is_traced (Coro::State coro)
2079 PROTOTYPE: $
2080 CODE:
2081 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2082 OUTPUT:
2083 RETVAL
2084
2085UV
2086rss (Coro::State coro)
2087 PROTOTYPE: $
2088 ALIAS:
2089 usecount = 1
2090 CODE:
2091 switch (ix)
2092 {
2093 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2094 case 1: RETVAL = coro->usecount; break;
2095 }
2096 OUTPUT:
2097 RETVAL
2098
2099void
2100force_cctx ()
2101 CODE:
2102 struct coro *coro = SvSTATE (coro_current);
2103 coro->cctx->idle_sp = 0;
2104
2105void
2106swap_defsv (Coro::State self)
2107 PROTOTYPE: $
2108 ALIAS:
2109 swap_defav = 1
2110 CODE:
2111 if (!self->slot)
2112 croak ("cannot swap state with coroutine that has no saved state");
2113 else
2114 {
2115 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2116 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2117
2118 SV *tmp = *src; *src = *dst; *dst = tmp;
2119 }
2120
1267MODULE = Coro::State PACKAGE = Coro 2121MODULE = Coro::State PACKAGE = Coro
1268 2122
1269BOOT: 2123BOOT:
1270{ 2124{
1271 int i; 2125 int i;
1272 2126
2127 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2128 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2129 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2130
2131 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2132 SvREADONLY_on (coro_current);
2133
1273 coro_stash = gv_stashpv ("Coro", TRUE); 2134 coro_stash = gv_stashpv ("Coro", TRUE);
1274 2135
1275 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2136 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1276 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2137 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1277 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2138 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1278 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2139 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1279 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2140 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1280 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2141 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1281 2142
1282 coro_current = get_sv ("Coro::current", FALSE);
1283 SvREADONLY_on (coro_current);
1284
1285 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1286 coro_ready[i] = newAV (); 2144 coro_ready[i] = newAV ();
1287 2145
1288 { 2146 {
1289 SV *sv = perl_get_sv("Coro::API", 1); 2147 SV *sv = perl_get_sv ("Coro::API", TRUE);
2148 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1290 2149
1291 coroapi.schedule = api_schedule; 2150 coroapi.schedule = api_schedule;
1292 coroapi.save = api_save;
1293 coroapi.cede = api_cede; 2151 coroapi.cede = api_cede;
1294 coroapi.cede_notself = api_cede_notself; 2152 coroapi.cede_notself = api_cede_notself;
1295 coroapi.ready = api_ready; 2153 coroapi.ready = api_ready;
1296 coroapi.is_ready = api_is_ready; 2154 coroapi.is_ready = api_is_ready;
1297 coroapi.nready = &coro_nready; 2155 coroapi.nready = &coro_nready;
… …
1306void 2164void
1307_set_current (SV *current) 2165_set_current (SV *current)
1308 PROTOTYPE: $ 2166 PROTOTYPE: $
1309 CODE: 2167 CODE:
1310 SvREFCNT_dec (SvRV (coro_current)); 2168 SvREFCNT_dec (SvRV (coro_current));
1311 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2169 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2170
2171void
2172_set_readyhook (SV *hook)
2173 PROTOTYPE: $
2174 CODE:
2175 LOCK;
2176 SvREFCNT_dec (coro_readyhook);
2177 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2178 UNLOCK;
1312 2179
1313int 2180int
1314prio (Coro::State coro, int newprio = 0) 2181prio (Coro::State coro, int newprio = 0)
1315 ALIAS: 2182 ALIAS:
1316 nice = 1 2183 nice = 1
… …
1338 CODE: 2205 CODE:
1339 RETVAL = boolSV (api_ready (self)); 2206 RETVAL = boolSV (api_ready (self));
1340 OUTPUT: 2207 OUTPUT:
1341 RETVAL 2208 RETVAL
1342 2209
1343SV *
1344is_ready (SV *self)
1345 PROTOTYPE: $
1346 CODE:
1347 RETVAL = boolSV (api_is_ready (self));
1348 OUTPUT:
1349 RETVAL
1350
1351int 2210int
1352nready (...) 2211nready (...)
1353 PROTOTYPE: 2212 PROTOTYPE:
1354 CODE: 2213 CODE:
1355 RETVAL = coro_nready; 2214 RETVAL = coro_nready;
1356 OUTPUT: 2215 OUTPUT:
1357 RETVAL 2216 RETVAL
1358 2217
2218# for async_pool speedup
2219void
2220_pool_1 (SV *cb)
2221 CODE:
2222{
2223 struct coro *coro = SvSTATE (coro_current);
2224 HV *hv = (HV *)SvRV (coro_current);
2225 AV *defav = GvAV (PL_defgv);
2226 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2227 AV *invoke_av;
2228 int i, len;
2229
2230 if (!invoke)
2231 {
2232 SV *old = PL_diehook;
2233 PL_diehook = 0;
2234 SvREFCNT_dec (old);
2235 croak ("\3async_pool terminate\2\n");
2236 }
2237
2238 SvREFCNT_dec (coro->saved_deffh);
2239 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2240
2241 hv_store (hv, "desc", sizeof ("desc") - 1,
2242 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2243
2244 invoke_av = (AV *)SvRV (invoke);
2245 len = av_len (invoke_av);
2246
2247 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2248
2249 if (len > 0)
2250 {
2251 av_fill (defav, len - 1);
2252 for (i = 0; i < len; ++i)
2253 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2254 }
2255
2256 SvREFCNT_dec (invoke);
2257}
2258
2259void
2260_pool_2 (SV *cb)
2261 CODE:
2262{
2263 struct coro *coro = SvSTATE (coro_current);
2264
2265 sv_setsv (cb, &PL_sv_undef);
2266
2267 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2268 coro->saved_deffh = 0;
2269
2270 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2271 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2272 {
2273 SV *old = PL_diehook;
2274 PL_diehook = 0;
2275 SvREFCNT_dec (old);
2276 croak ("\3async_pool terminate\2\n");
2277 }
2278
2279 av_clear (GvAV (PL_defgv));
2280 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2281 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2282
2283 coro->prio = 0;
2284
2285 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2286 api_trace (coro_current, 0);
2287
2288 av_push (av_async_pool, newSVsv (coro_current));
2289}
2290
2291#if 0
2292
2293void
2294_generator_call (...)
2295 PROTOTYPE: @
2296 PPCODE:
2297 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2298 xxxx
2299 abort ();
2300
2301SV *
2302gensub (SV *sub, ...)
2303 PROTOTYPE: &;@
2304 CODE:
2305{
2306 struct coro *coro;
2307 MAGIC *mg;
2308 CV *xcv;
2309 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2310 int i;
2311
2312 CvGV (ncv) = CvGV (cv);
2313 CvFILE (ncv) = CvFILE (cv);
2314
2315 Newz (0, coro, 1, struct coro);
2316 coro->args = newAV ();
2317 coro->flags = CF_NEW;
2318
2319 av_extend (coro->args, items - 1);
2320 for (i = 1; i < items; i++)
2321 av_push (coro->args, newSVsv (ST (i)));
2322
2323 CvISXSUB_on (ncv);
2324 CvXSUBANY (ncv).any_ptr = (void *)coro;
2325
2326 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2327
2328 CvXSUB (ncv) = CvXSUB (xcv);
2329 CvANON_on (ncv);
2330
2331 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2332 RETVAL = newRV_noinc ((SV *)ncv);
2333}
2334 OUTPUT:
2335 RETVAL
2336
2337#endif
2338
2339
1359MODULE = Coro::State PACKAGE = Coro::AIO 2340MODULE = Coro::State PACKAGE = Coro::AIO
1360 2341
1361SV * 2342void
1362_get_state () 2343_get_state (SV *self)
1363 CODE: 2344 PPCODE:
1364{ 2345{
1365 struct io_state *data; 2346 AV *defav = GvAV (PL_defgv);
1366 2347 AV *av = newAV ();
2348 int i;
1367 RETVAL = newSV (sizeof (struct io_state)); 2349 SV *data_sv = newSV (sizeof (struct io_state));
1368 data = (struct io_state *)SvPVX (RETVAL); 2350 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1369 SvCUR_set (RETVAL, sizeof (struct io_state)); 2351 SvCUR_set (data_sv, sizeof (struct io_state));
1370 SvPOK_only (RETVAL); 2352 SvPOK_only (data_sv);
1371 2353
1372 data->errorno = errno; 2354 data->errorno = errno;
1373 data->laststype = PL_laststype; 2355 data->laststype = PL_laststype;
1374 data->laststatval = PL_laststatval; 2356 data->laststatval = PL_laststatval;
1375 data->statcache = PL_statcache; 2357 data->statcache = PL_statcache;
2358
2359 av_extend (av, AvFILLp (defav) + 1 + 1);
2360
2361 for (i = 0; i <= AvFILLp (defav); ++i)
2362 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2363
2364 av_push (av, data_sv);
2365
2366 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2367
2368 api_ready (self);
1376} 2369}
1377 OUTPUT:
1378 RETVAL
1379 2370
1380void 2371void
1381_set_state (char *data_) 2372_set_state (SV *state)
1382 PROTOTYPE: $ 2373 PROTOTYPE: $
1383 CODE: 2374 PPCODE:
1384{ 2375{
1385 struct io_state *data = (void *)data_; 2376 AV *av = (AV *)SvRV (state);
2377 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2378 int i;
1386 2379
1387 errno = data->errorno; 2380 errno = data->errorno;
1388 PL_laststype = data->laststype; 2381 PL_laststype = data->laststype;
1389 PL_laststatval = data->laststatval; 2382 PL_laststatval = data->laststatval;
1390 PL_statcache = data->statcache; 2383 PL_statcache = data->statcache;
1391}
1392 2384
2385 EXTEND (SP, AvFILLp (av));
2386 for (i = 0; i < AvFILLp (av); ++i)
2387 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2388}
2389
2390
2391MODULE = Coro::State PACKAGE = Coro::AnyEvent
2392
2393BOOT:
2394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2395
2396SV *
2397_schedule (...)
2398 PROTOTYPE: @
2399 CODE:
2400{
2401 static int incede;
2402
2403 api_cede_notself ();
2404
2405 ++incede;
2406 while (coro_nready >= incede && api_cede ())
2407 ;
2408
2409 sv_setsv (sv_activity, &PL_sv_undef);
2410 if (coro_nready >= incede)
2411 {
2412 PUSHMARK (SP);
2413 PUTBACK;
2414 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2415 SPAGAIN;
2416 }
2417
2418 --incede;
2419}
2420
2421
2422MODULE = Coro::State PACKAGE = PerlIO::cede
2423
2424BOOT:
2425 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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