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Comparing Coro/Coro/State.xs (file contents):
Revision 1.222 by root, Sun Jan 20 10:22:07 2008 UTC vs.
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#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
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
77/* 5.8.7 */ 101/* 5.8.7 */
78#ifndef SvRV_set 102#ifndef SvRV_set
79# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
80#endif 104#endif
81 105
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
92#endif 108#endif
93 109
94#ifndef CORO_STACKGUARD 110#ifndef CORO_STACKGUARD
… …
100# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
101#endif 117#endif
102 118
103/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
104 * portable way as possible. */ 120 * portable way as possible. */
105#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
106#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
107 126
108#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
109 128
110#if __GNUC__ >= 3 129#if __GNUC__ >= 3
111# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
114#else 133#else
115# define attribute(x) 134# define attribute(x)
116# define BARRIER
117# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
118#endif 137#endif
119 138
120#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
122 141
123#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
124 143
125#include "CoroAPI.h" 144#include "CoroAPI.h"
126 145
127#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
128static perl_mutex coro_mutex; 147# if CORO_PTHREAD
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
130# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
131#else
132# define LOCK (void)0
133# define UNLOCK (void)0
134#endif 150#endif
135 151
136/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
137struct io_state 153struct io_state
138{ 154{
155 AV *res;
139 int errorno; 156 int errorno;
140 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
141 int laststatval; 158 int laststatval;
142 Stat_t statcache; 159 Stat_t statcache;
143}; 160};
144 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
145static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
146static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
147static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
148static JMPENV *main_top_env; 168static JMPENV *main_top_env;
149static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
150static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next;
151 172
152static GV *irsgv; /* $/ */ 173static GV *irsgv; /* $/ */
153static GV *stdoutgv; /* *STDOUT */ 174static GV *stdoutgv; /* *STDOUT */
154static SV *rv_diehook; 175static SV *rv_diehook;
155static SV *rv_warnhook; 176static SV *rv_warnhook;
… …
157 178
158/* async_pool helper stuff */ 179/* async_pool helper stuff */
159static SV *sv_pool_rss; 180static SV *sv_pool_rss;
160static SV *sv_pool_size; 181static SV *sv_pool_size;
161static AV *av_async_pool; 182static AV *av_async_pool;
183
184/* Coro::AnyEvent */
185static SV *sv_activity;
162 186
163static struct coro_cctx *cctx_first; 187static struct coro_cctx *cctx_first;
164static int cctx_count, cctx_idle; 188static int cctx_count, cctx_idle;
165 189
166enum { 190enum {
… …
171 CC_TRACE_LINE = 0x10, /* trace each statement */ 195 CC_TRACE_LINE = 0x10, /* trace each statement */
172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 196 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
173}; 197};
174 198
175/* this is a structure representing a c-level coroutine */ 199/* this is a structure representing a c-level coroutine */
176typedef struct coro_cctx { 200typedef struct coro_cctx
201{
177 struct coro_cctx *next; 202 struct coro_cctx *next;
178 203
179 /* the stack */ 204 /* the stack */
180 void *sptr; 205 void *sptr;
181 size_t ssize; 206 size_t ssize;
… …
184 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
185 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
186 JMPENV *top_env; 211 JMPENV *top_env;
187 coro_context cctx; 212 coro_context cctx;
188 213
214 U32 gen;
189#if CORO_USE_VALGRIND 215#if CORO_USE_VALGRIND
190 int valgrind_id; 216 int valgrind_id;
191#endif 217#endif
192 unsigned char flags; 218 unsigned char flags;
193} coro_cctx; 219} coro_cctx;
… …
198 CF_NEW = 0x0004, /* has never been switched to */ 224 CF_NEW = 0x0004, /* has never been switched to */
199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
200}; 226};
201 227
202/* the structure where most of the perl state is stored, overlaid on the cxstack */ 228/* the structure where most of the perl state is stored, overlaid on the cxstack */
203typedef struct { 229typedef struct
230{
204 SV *defsv; 231 SV *defsv;
205 AV *defav; 232 AV *defav;
206 SV *errsv; 233 SV *errsv;
207 SV *irsgv; 234 SV *irsgv;
208#define VAR(name,type) type name; 235#define VAR(name,type) type name;
… …
212 239
213#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
214 241
215/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
216struct coro { 243struct coro {
217 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
218 coro_cctx *cctx; 245 coro_cctx *cctx;
219 246
220 /* process data */ 247 /* process data */
248 struct CoroSLF slf_frame; /* saved slf frame */
221 AV *mainstack; 249 AV *mainstack;
222 perl_slots *slot; /* basically the saved sp */ 250 perl_slots *slot; /* basically the saved sp */
223 251
224 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
225 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
226 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
227 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
228 257
229 /* statistics */ 258 /* statistics */
230 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
231 260
232 /* coro process data */ 261 /* coro process data */
… …
240 struct coro *next, *prev; 269 struct coro *next, *prev;
241}; 270};
242 271
243typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
244typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275static struct CoroSLF slf_frame; /* the current slf frame */
245 276
246/** Coro ********************************************************************/ 277/** Coro ********************************************************************/
247 278
248#define PRIO_MAX 3 279#define PRIO_MAX 3
249#define PRIO_HIGH 1 280#define PRIO_HIGH 1
… …
252#define PRIO_IDLE -3 283#define PRIO_IDLE -3
253#define PRIO_MIN -4 284#define PRIO_MIN -4
254 285
255/* for Coro.pm */ 286/* for Coro.pm */
256static SV *coro_current; 287static SV *coro_current;
288static SV *coro_readyhook;
257static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
258static int coro_nready;
259static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
260 292
261/** lowlevel stuff **********************************************************/ 293/** lowlevel stuff **********************************************************/
262 294
263static SV * 295static SV *
264coro_get_sv (pTHX_ const char *name, int create) 296coro_get_sv (pTHX_ const char *name, int create)
265{ 297{
266#if PERL_VERSION_ATLEAST (5,9,0) 298#if PERL_VERSION_ATLEAST (5,10,0)
267 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
268 get_sv (name, create); 300 get_sv (name, create);
269#endif 301#endif
270 return get_sv (name, create); 302 return get_sv (name, create);
271} 303}
272 304
273static AV * 305static AV *
274coro_get_av (pTHX_ const char *name, int create) 306coro_get_av (pTHX_ const char *name, int create)
275{ 307{
276#if PERL_VERSION_ATLEAST (5,9,0) 308#if PERL_VERSION_ATLEAST (5,10,0)
277 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
278 get_av (name, create); 310 get_av (name, create);
279#endif 311#endif
280 return get_av (name, create); 312 return get_av (name, create);
281} 313}
282 314
283static HV * 315static HV *
284coro_get_hv (pTHX_ const char *name, int create) 316coro_get_hv (pTHX_ const char *name, int create)
285{ 317{
286#if PERL_VERSION_ATLEAST (5,9,0) 318#if PERL_VERSION_ATLEAST (5,10,0)
287 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
288 get_hv (name, create); 320 get_hv (name, create);
289#endif 321#endif
290 return get_hv (name, create); 322 return get_hv (name, create);
291} 323}
… …
296 AV *padlist = CvPADLIST (cv); 328 AV *padlist = CvPADLIST (cv);
297 AV *newpadlist, *newpad; 329 AV *newpadlist, *newpad;
298 330
299 newpadlist = newAV (); 331 newpadlist = newAV ();
300 AvREAL_off (newpadlist); 332 AvREAL_off (newpadlist);
301#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
302 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
303#else 335#else
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
305#endif 337#endif
306 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
307 --AvFILLp (padlist); 339 --AvFILLp (padlist);
308 340
309 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
310 av_store (newpadlist, 1, (SV *)newpad); 342 av_store (newpadlist, 1, (SV *)newpad);
311 343
312 return newpadlist; 344 return newpadlist;
313} 345}
314 346
… …
344 376
345 /* casting is fun. */ 377 /* casting is fun. */
346 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
347 free_padlist (aTHX_ padlist); 379 free_padlist (aTHX_ padlist);
348 380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382
349 return 0; 383 return 0;
350} 384}
351 385
352#define CORO_MAGIC_type_cv PERL_MAGIC_ext 386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
353#define CORO_MAGIC_type_state PERL_MAGIC_ext 387#define CORO_MAGIC_type_state PERL_MAGIC_ext
… …
355static MGVTBL coro_cv_vtbl = { 389static MGVTBL coro_cv_vtbl = {
356 0, 0, 0, 0, 390 0, 0, 0, 0,
357 coro_cv_free 391 coro_cv_free
358}; 392};
359 393
360#define CORO_MAGIC(sv,type) \ 394#define CORO_MAGIC(sv, type) \
361 SvMAGIC (sv) \ 395 expect_true (SvMAGIC (sv)) \
362 ? SvMAGIC (sv)->mg_type == type \ 396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
363 ? SvMAGIC (sv) \ 397 ? SvMAGIC (sv) \
364 : mg_find (sv, type) \ 398 : mg_find (sv, type) \
365 : 0 399 : 0
366 400
367#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
368#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
369 403
370static struct coro * 404INLINE struct coro *
371SvSTATE_ (pTHX_ SV *coro) 405SvSTATE_ (pTHX_ SV *coro)
372{ 406{
373 HV *stash; 407 HV *stash;
374 MAGIC *mg; 408 MAGIC *mg;
375 409
… …
390 mg = CORO_MAGIC_state (coro); 424 mg = CORO_MAGIC_state (coro);
391 return (struct coro *)mg->mg_ptr; 425 return (struct coro *)mg->mg_ptr;
392} 426}
393 427
394#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
395 442
396/* the next two functions merely cache the padlists */ 443/* the next two functions merely cache the padlists */
397static void 444static void
398get_padlist (pTHX_ CV *cv) 445get_padlist (pTHX_ CV *cv)
399{ 446{
… …
403 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 450 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
404 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 451 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
405 else 452 else
406 { 453 {
407#if CORO_PREFER_PERL_FUNCTIONS 454#if CORO_PREFER_PERL_FUNCTIONS
408 /* this is probably cleaner, but also slower? */ 455 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */
409 CV *cp = Perl_cv_clone (cv); 457 CV *cp = Perl_cv_clone (cv);
410 CvPADLIST (cv) = CvPADLIST (cp); 458 CvPADLIST (cv) = CvPADLIST (cp);
411 CvPADLIST (cp) = 0; 459 CvPADLIST (cp) = 0;
412 SvREFCNT_dec (cp); 460 SvREFCNT_dec (cp);
413#else 461#else
… …
465 CvPADLIST (cv) = (AV *)POPs; 513 CvPADLIST (cv) = (AV *)POPs;
466 } 514 }
467 515
468 PUTBACK; 516 PUTBACK;
469 } 517 }
518
519 slf_frame = c->slf_frame;
470} 520}
471 521
472static void 522static void
473save_perl (pTHX_ Coro__State c) 523save_perl (pTHX_ Coro__State c)
474{ 524{
525 c->slf_frame = slf_frame;
526
475 { 527 {
476 dSP; 528 dSP;
477 I32 cxix = cxstack_ix; 529 I32 cxix = cxstack_ix;
478 PERL_CONTEXT *ccstk = cxstack; 530 PERL_CONTEXT *ccstk = cxstack;
479 PERL_SI *top_si = PL_curstackinfo; 531 PERL_SI *top_si = PL_curstackinfo;
… …
497 549
498 if (expect_true (CvDEPTH (cv))) 550 if (expect_true (CvDEPTH (cv)))
499 { 551 {
500 EXTEND (SP, 3); 552 EXTEND (SP, 3);
501 PUSHs ((SV *)CvPADLIST (cv)); 553 PUSHs ((SV *)CvPADLIST (cv));
502 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 554 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
503 PUSHs ((SV *)cv); 555 PUSHs ((SV *)cv);
504 556
505 CvDEPTH (cv) = 0; 557 CvDEPTH (cv) = 0;
506 get_padlist (aTHX_ cv); 558 get_padlist (aTHX_ cv);
507 } 559 }
… …
546 #undef VAR 598 #undef VAR
547 } 599 }
548} 600}
549 601
550/* 602/*
551 * allocate various perl stacks. This is an exact copy 603 * allocate various perl stacks. This is almost an exact copy
552 * of perl.c:init_stacks, except that it uses less memory 604 * of perl.c:init_stacks, except that it uses less memory
553 * on the (sometimes correct) assumption that coroutines do 605 * on the (sometimes correct) assumption that coroutines do
554 * not usually need a lot of stackspace. 606 * not usually need a lot of stackspace.
555 */ 607 */
556#if CORO_PREFER_PERL_FUNCTIONS 608#if CORO_PREFER_PERL_FUNCTIONS
… …
587 639
588 New(54,PL_savestack,24,ANY); 640 New(54,PL_savestack,24,ANY);
589 PL_savestack_ix = 0; 641 PL_savestack_ix = 0;
590 PL_savestack_max = 24; 642 PL_savestack_max = 24;
591 643
592#if !PERL_VERSION_ATLEAST (5,9,0) 644#if !PERL_VERSION_ATLEAST (5,10,0)
593 New(54,PL_retstack,4,OP*); 645 New(54,PL_retstack,4,OP*);
594 PL_retstack_ix = 0; 646 PL_retstack_ix = 0;
595 PL_retstack_max = 4; 647 PL_retstack_max = 4;
596#endif 648#endif
597} 649}
… …
599 651
600/* 652/*
601 * destroy the stacks, the callchain etc... 653 * destroy the stacks, the callchain etc...
602 */ 654 */
603static void 655static void
604coro_destroy_stacks (pTHX) 656coro_destruct_stacks (pTHX)
605{ 657{
606 while (PL_curstackinfo->si_next) 658 while (PL_curstackinfo->si_next)
607 PL_curstackinfo = PL_curstackinfo->si_next; 659 PL_curstackinfo = PL_curstackinfo->si_next;
608 660
609 while (PL_curstackinfo) 661 while (PL_curstackinfo)
… …
620 672
621 Safefree (PL_tmps_stack); 673 Safefree (PL_tmps_stack);
622 Safefree (PL_markstack); 674 Safefree (PL_markstack);
623 Safefree (PL_scopestack); 675 Safefree (PL_scopestack);
624 Safefree (PL_savestack); 676 Safefree (PL_savestack);
625#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
626 Safefree (PL_retstack); 678 Safefree (PL_retstack);
627#endif 679#endif
628} 680}
629 681
630static size_t 682static size_t
… …
646 #undef VAR 698 #undef VAR
647 } 699 }
648 else 700 else
649 slot = coro->slot; 701 slot = coro->slot;
650 702
703 if (slot)
704 {
651 rss += sizeof (slot->curstackinfo); 705 rss += sizeof (slot->curstackinfo);
652 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
653 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
654 rss += slot->tmps_max * sizeof (SV *); 708 rss += slot->tmps_max * sizeof (SV *);
655 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
656 rss += slot->scopestack_max * sizeof (I32); 710 rss += slot->scopestack_max * sizeof (I32);
657 rss += slot->savestack_max * sizeof (ANY); 711 rss += slot->savestack_max * sizeof (ANY);
658 712
659#if !PERL_VERSION_ATLEAST (5,9,0) 713#if !PERL_VERSION_ATLEAST (5,10,0)
660 rss += slot->retstack_max * sizeof (OP *); 714 rss += slot->retstack_max * sizeof (OP *);
661#endif 715#endif
716 }
662 } 717 }
663 718
664 return rss; 719 return rss;
665} 720}
666 721
667/** coroutine stack handling ************************************************/ 722/** coroutine stack handling ************************************************/
668 723
669static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 724static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
670static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 725static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
727
728/* apparently < 5.8.8 */
729#ifndef MgPV_nolen_const
730#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
731 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
732 (const char*)(mg)->mg_ptr)
733#endif
671 734
672/* 735/*
673 * This overrides the default magic get method of %SIG elements. 736 * This overrides the default magic get method of %SIG elements.
674 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
675 * and instead of tryign to save and restore the hash elements, we just provide 738 * and instead of tryign to save and restore the hash elements, we just provide
… …
683{ 746{
684 const char *s = MgPV_nolen_const (mg); 747 const char *s = MgPV_nolen_const (mg);
685 748
686 if (*s == '_') 749 if (*s == '_')
687 { 750 {
688 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 751 SV **svp = 0;
689 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 752
753 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
754 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
755
756 if (svp)
757 {
758 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
759 return 0;
760 }
690 } 761 }
691 762
692 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 763 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
764}
765
766static int
767coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
768{
769 const char *s = MgPV_nolen_const (mg);
770
771 if (*s == '_')
772 {
773 SV **svp = 0;
774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 SV *old = *svp;
781 *svp = 0;
782 SvREFCNT_dec (old);
783 return 0;
784 }
785 }
786
787 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
693} 788}
694 789
695static int 790static int
696coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 791coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
697{ 792{
… …
707 if (svp) 802 if (svp)
708 { 803 {
709 SV *old = *svp; 804 SV *old = *svp;
710 *svp = newSVsv (sv); 805 *svp = newSVsv (sv);
711 SvREFCNT_dec (old); 806 SvREFCNT_dec (old);
712 return; 807 return 0;
713 } 808 }
714 } 809 }
715 810
716 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 811 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
812}
813
814static void
815prepare_nop (pTHX_ struct coro_transfer_args *ta)
816{
817 /* kind of mega-hacky, but works */
818 ta->next = ta->prev = (struct coro *)ta;
819}
820
821static int
822slf_check_nop (pTHX_ struct CoroSLF *frame)
823{
824 return 0;
717} 825}
718 826
719static void 827static void
720coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
721{ 829{
… …
731 PL_curpm = 0; 839 PL_curpm = 0;
732 PL_curpad = 0; 840 PL_curpad = 0;
733 PL_localizing = 0; 841 PL_localizing = 0;
734 PL_dirty = 0; 842 PL_dirty = 0;
735 PL_restartop = 0; 843 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0;
846#endif
736 847
737 /* recreate the die/warn hooks */ 848 /* recreate the die/warn hooks */
738 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
739 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
740 851
741 GvSV (PL_defgv) = newSV (0); 852 GvSV (PL_defgv) = newSV (0);
742 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
743 GvSV (PL_errgv) = newSV (0); 854 GvSV (PL_errgv) = newSV (0);
744 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
745 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
746 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
747 858
748 { 859 {
749 dSP; 860 dSP;
750 LOGOP myop; 861 UNOP myop;
751 862
752 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
753 myop.op_next = Nullop; 864 myop.op_next = Nullop;
754 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
755 866
756 PUSHMARK (SP); 867 PUSHMARK (SP);
757 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
760 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
761 SPAGAIN; 872 SPAGAIN;
762 } 873 }
763 874
764 /* this newly created coroutine might be run on an existing cctx which most 875 /* this newly created coroutine might be run on an existing cctx which most
765 * likely was suspended in set_stacklevel, called from entersub. 876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
766 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
767 * so we ENTER here for symmetry
768 */ 877 */
769 ENTER; 878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
770} 880}
771 881
772static void 882static void
773coro_destroy (pTHX_ struct coro *coro) 883coro_destruct (pTHX_ struct coro *coro)
774{ 884{
775 if (!IN_DESTRUCT) 885 if (!IN_DESTRUCT)
776 { 886 {
777 /* restore all saved variables and stuff */ 887 /* restore all saved variables and stuff */
778 LEAVE_SCOPE (0); 888 LEAVE_SCOPE (0);
… …
800 SvREFCNT_dec (PL_warnhook); 910 SvREFCNT_dec (PL_warnhook);
801 911
802 SvREFCNT_dec (coro->saved_deffh); 912 SvREFCNT_dec (coro->saved_deffh);
803 SvREFCNT_dec (coro->throw); 913 SvREFCNT_dec (coro->throw);
804 914
805 coro_destroy_stacks (aTHX); 915 coro_destruct_stacks (aTHX);
806} 916}
807 917
808static void 918INLINE void
809free_coro_mortal (pTHX) 919free_coro_mortal (pTHX)
810{ 920{
811 if (expect_true (coro_mortal)) 921 if (expect_true (coro_mortal))
812 { 922 {
813 SvREFCNT_dec (coro_mortal); 923 SvREFCNT_dec (coro_mortal);
… …
818static int 928static int
819runops_trace (pTHX) 929runops_trace (pTHX)
820{ 930{
821 COP *oldcop = 0; 931 COP *oldcop = 0;
822 int oldcxix = -2; 932 int oldcxix = -2;
823 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
824 coro_cctx *cctx = coro->cctx; 934 coro_cctx *cctx = coro->cctx;
825 935
826 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
827 { 937 {
828 PERL_ASYNC_CHECK (); 938 PERL_ASYNC_CHECK ();
… …
847 : cx->blk_gimme == G_SCALAR ? bot + 1 957 : cx->blk_gimme == G_SCALAR ? bot + 1
848 : bot; 958 : bot;
849 959
850 av_extend (av, top - bot); 960 av_extend (av, top - bot);
851 while (bot < top) 961 while (bot < top)
852 av_push (av, SvREFCNT_inc (*bot++)); 962 av_push (av, SvREFCNT_inc_NN (*bot++));
853 963
854 PL_runops = RUNOPS_DEFAULT; 964 PL_runops = RUNOPS_DEFAULT;
855 ENTER; 965 ENTER;
856 SAVETMPS; 966 SAVETMPS;
857 EXTEND (SP, 3); 967 EXTEND (SP, 3);
… …
895 SAVETMPS; 1005 SAVETMPS;
896 EXTEND (SP, 3); 1006 EXTEND (SP, 3);
897 PUSHMARK (SP); 1007 PUSHMARK (SP);
898 PUSHs (&PL_sv_yes); 1008 PUSHs (&PL_sv_yes);
899 PUSHs (fullname); 1009 PUSHs (fullname);
900 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
901 PUTBACK; 1011 PUTBACK;
902 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
903 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
904 SPAGAIN; 1014 SPAGAIN;
905 FREETMPS; 1015 FREETMPS;
… …
937 1047
938 TAINT_NOT; 1048 TAINT_NOT;
939 return 0; 1049 return 0;
940} 1050}
941 1051
1052static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1054{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0;
1057}
1058
942/* inject a fake call to Coro::State::_cctx_init into the execution */ 1059/* inject a fake call to Coro::State::_cctx_init into the execution */
943/* _cctx_init should be careful, as it could be called at almost any time */ 1060/* _cctx_init should be careful, as it could be called at almost any time */
944/* during execution of a perl program */ 1061/* during execution of a perl program */
1062/* also initialises PL_top_env */
945static void NOINLINE 1063static void NOINLINE
946cctx_prepare (pTHX_ coro_cctx *cctx) 1064cctx_prepare (pTHX_ coro_cctx *cctx)
947{ 1065{
948 dSP; 1066 dSP;
949 LOGOP myop; 1067 UNOP myop;
950 1068
951 PL_top_env = &PL_start_env; 1069 PL_top_env = &PL_start_env;
952 1070
953 if (cctx->flags & CC_TRACE) 1071 if (cctx->flags & CC_TRACE)
954 PL_runops = runops_trace; 1072 PL_runops = runops_trace;
955 1073
956 Zero (&myop, 1, LOGOP); 1074 Zero (&myop, 1, UNOP);
957 myop.op_next = PL_op; 1075 myop.op_next = PL_op;
958 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
959 1077
960 PUSHMARK (SP); 1078 PUSHMARK (SP);
961 EXTEND (SP, 2); 1079 EXTEND (SP, 2);
962 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1080 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
963 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
964 PUTBACK; 1082 PUTBACK;
965 PL_op = (OP *)&myop; 1083 PL_op = (OP *)&myop;
966 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
967 SPAGAIN; 1085 SPAGAIN;
968} 1086}
969 1087
1088/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void
1090transfer_tail (pTHX)
1091{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106}
1107
970/* 1108/*
971 * this is a _very_ stripped down perl interpreter ;) 1109 * this is a _very_ stripped down perl interpreter ;)
972 */ 1110 */
973static void 1111static void
974cctx_run (void *arg) 1112cctx_run (void *arg)
975{ 1113{
1114#ifdef USE_ITHREADS
1115# if CORO_PTHREAD
1116 PERL_SET_CONTEXT (coro_thx);
1117# endif
1118#endif
1119 {
976 dTHX; 1120 dTHX;
977 1121
978 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1122 /* normally we would need to skip the entersub here */
979 UNLOCK; 1123 /* not doing so will re-execute it, which is exactly what we want */
980
981 /* we now skip the entersub that lead to transfer() */
982 PL_op = PL_op->op_next; 1124 /* PL_nop = PL_nop->op_next */
983 1125
984 /* inject a fake subroutine call to cctx_init */ 1126 /* inject a fake subroutine call to cctx_init */
985 cctx_prepare (aTHX_ (coro_cctx *)arg); 1127 cctx_prepare (aTHX_ (coro_cctx *)arg);
986 1128
1129 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX);
1132
987 /* somebody or something will hit me for both perl_run and PL_restartop */ 1133 /* somebody or something will hit me for both perl_run and PL_restartop */
988 PL_restartop = PL_op; 1134 PL_restartop = PL_op;
989 perl_run (PL_curinterp); 1135 perl_run (PL_curinterp);
990 1136
991 /* 1137 /*
992 * If perl-run returns we assume exit() was being called or the coro 1138 * If perl-run returns we assume exit() was being called or the coro
993 * fell off the end, which seems to be the only valid (non-bug) 1139 * fell off the end, which seems to be the only valid (non-bug)
994 * reason for perl_run to return. We try to exit by jumping to the 1140 * reason for perl_run to return. We try to exit by jumping to the
995 * bootstrap-time "top" top_env, as we cannot restore the "main" 1141 * bootstrap-time "top" top_env, as we cannot restore the "main"
996 * coroutine as Coro has no such concept 1142 * coroutine as Coro has no such concept
997 */ 1143 */
998 PL_top_env = main_top_env; 1144 PL_top_env = main_top_env;
999 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 }
1000} 1147}
1001 1148
1002static coro_cctx * 1149static coro_cctx *
1003cctx_new () 1150cctx_new ()
1004{ 1151{
1005 coro_cctx *cctx; 1152 coro_cctx *cctx;
1153
1154 ++cctx_count;
1155 New (0, cctx, 1, coro_cctx);
1156
1157 cctx->gen = cctx_gen;
1158 cctx->flags = 0;
1159 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1160
1161 return cctx;
1162}
1163
1164/* create a new cctx only suitable as source */
1165static coro_cctx *
1166cctx_new_empty ()
1167{
1168 coro_cctx *cctx = cctx_new ();
1169
1170 cctx->sptr = 0;
1171 coro_create (&cctx->cctx, 0, 0, 0, 0);
1172
1173 return cctx;
1174}
1175
1176/* create a new cctx suitable as destination/running a perl interpreter */
1177static coro_cctx *
1178cctx_new_run ()
1179{
1180 coro_cctx *cctx = cctx_new ();
1006 void *stack_start; 1181 void *stack_start;
1007 size_t stack_size; 1182 size_t stack_size;
1008 1183
1009 ++cctx_count;
1010
1011 Newz (0, cctx, 1, coro_cctx);
1012
1013#if HAVE_MMAP 1184#if HAVE_MMAP
1014 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1185 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1015 /* mmap supposedly does allocate-on-write for us */ 1186 /* mmap supposedly does allocate-on-write for us */
1016 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1187 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1017 1188
1018 if (cctx->sptr != (void *)-1) 1189 if (cctx->sptr != (void *)-1)
1019 { 1190 {
1020# if CORO_STACKGUARD 1191 #if CORO_STACKGUARD
1021 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1192 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1022# endif 1193 #endif
1023 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1194 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1024 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1195 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1025 cctx->flags |= CC_MAPPED; 1196 cctx->flags |= CC_MAPPED;
1026 } 1197 }
1027 else 1198 else
1028#endif 1199#endif
1029 { 1200 {
1030 cctx->ssize = coro_stacksize * (long)sizeof (long); 1201 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1031 New (0, cctx->sptr, coro_stacksize, long); 1202 New (0, cctx->sptr, cctx_stacksize, long);
1032 1203
1033 if (!cctx->sptr) 1204 if (!cctx->sptr)
1034 { 1205 {
1035 perror ("FATAL: unable to allocate stack for coroutine"); 1206 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1036 _exit (EXIT_FAILURE); 1207 _exit (EXIT_FAILURE);
1037 } 1208 }
1038 1209
1039 stack_start = cctx->sptr; 1210 stack_start = cctx->sptr;
1040 stack_size = cctx->ssize; 1211 stack_size = cctx->ssize;
1041 } 1212 }
1042 1213
1043 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1214 #if CORO_USE_VALGRIND
1215 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1216 #endif
1217
1044 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1218 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1045 1219
1046 return cctx; 1220 return cctx;
1047} 1221}
1048 1222
… …
1051{ 1225{
1052 if (!cctx) 1226 if (!cctx)
1053 return; 1227 return;
1054 1228
1055 --cctx_count; 1229 --cctx_count;
1230 coro_destroy (&cctx->cctx);
1056 1231
1232 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr)
1234 {
1057#if CORO_USE_VALGRIND 1235 #if CORO_USE_VALGRIND
1058 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1236 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1059#endif 1237 #endif
1060 1238
1061#if HAVE_MMAP 1239#if HAVE_MMAP
1062 if (cctx->flags & CC_MAPPED) 1240 if (cctx->flags & CC_MAPPED)
1063 munmap (cctx->sptr, cctx->ssize); 1241 munmap (cctx->sptr, cctx->ssize);
1064 else 1242 else
1065#endif 1243#endif
1066 Safefree (cctx->sptr); 1244 Safefree (cctx->sptr);
1245 }
1067 1246
1068 Safefree (cctx); 1247 Safefree (cctx);
1069} 1248}
1070 1249
1071/* wether this cctx should be destructed */ 1250/* wether this cctx should be destructed */
1072#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1251#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1073 1252
1074static coro_cctx * 1253static coro_cctx *
1075cctx_get (pTHX) 1254cctx_get (pTHX)
1076{ 1255{
1077 while (expect_true (cctx_first)) 1256 while (expect_true (cctx_first))
… …
1084 return cctx; 1263 return cctx;
1085 1264
1086 cctx_destroy (cctx); 1265 cctx_destroy (cctx);
1087 } 1266 }
1088 1267
1089 return cctx_new (); 1268 return cctx_new_run ();
1090} 1269}
1091 1270
1092static void 1271static void
1093cctx_put (coro_cctx *cctx) 1272cctx_put (coro_cctx *cctx)
1094{ 1273{
1274 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1275
1095 /* free another cctx if overlimit */ 1276 /* free another cctx if overlimit */
1096 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1277 if (expect_false (cctx_idle >= cctx_max_idle))
1097 { 1278 {
1098 coro_cctx *first = cctx_first; 1279 coro_cctx *first = cctx_first;
1099 cctx_first = first->next; 1280 cctx_first = first->next;
1100 --cctx_idle; 1281 --cctx_idle;
1101 1282
… …
1113transfer_check (pTHX_ struct coro *prev, struct coro *next) 1294transfer_check (pTHX_ struct coro *prev, struct coro *next)
1114{ 1295{
1115 if (expect_true (prev != next)) 1296 if (expect_true (prev != next))
1116 { 1297 {
1117 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1118 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1119 1300
1120 if (expect_false (next->flags & CF_RUNNING)) 1301 if (expect_false (next->flags & CF_RUNNING))
1121 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1122 1303
1123 if (expect_false (next->flags & CF_DESTROYED)) 1304 if (expect_false (next->flags & CF_DESTROYED))
1124 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1125 1306
1126 if (
1127#if PERL_VERSION_ATLEAST (5,9,0) 1307#if !PERL_VERSION_ATLEAST (5,10,0)
1128 expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1129#else
1130 expect_false (PL_lex_state != LEX_NOTPARSING) 1308 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1131#endif
1132 )
1133 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif
1134 } 1311 }
1135} 1312}
1136 1313
1137/* always use the TRANSFER macro */ 1314/* always use the TRANSFER macro */
1138static void NOINLINE 1315static void NOINLINE
1139transfer (pTHX_ struct coro *prev, struct coro *next) 1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1140{ 1317{
1141 dSTACKLEVEL; 1318 dSTACKLEVEL;
1142 static volatile int has_throw;
1143 1319
1144 /* sometimes transfer is only called to set idle_sp */ 1320 /* sometimes transfer is only called to set idle_sp */
1145 if (expect_false (!next)) 1321 if (expect_false (!next))
1146 { 1322 {
1147 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1148 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1149 } 1325 }
1150 else if (expect_true (prev != next)) 1326 else if (expect_true (prev != next))
1151 { 1327 {
1152 coro_cctx *prev__cctx; 1328 coro_cctx *prev__cctx;
1153 1329
1154 if (expect_false (prev->flags & CF_NEW)) 1330 if (expect_false (prev->flags & CF_NEW))
1155 { 1331 {
1156 /* create a new empty context */ 1332 /* create a new empty/source context */
1157 Newz (0, prev->cctx, 1, coro_cctx); 1333 prev->cctx = cctx_new_empty ();
1158 prev->flags &= ~CF_NEW; 1334 prev->flags &= ~CF_NEW;
1159 prev->flags |= CF_RUNNING; 1335 prev->flags |= CF_RUNNING;
1160 } 1336 }
1161 1337
1162 prev->flags &= ~CF_RUNNING; 1338 prev->flags &= ~CF_RUNNING;
1163 next->flags |= CF_RUNNING; 1339 next->flags |= CF_RUNNING;
1164
1165 LOCK;
1166 1340
1167 /* first get rid of the old state */ 1341 /* first get rid of the old state */
1168 save_perl (aTHX_ prev); 1342 save_perl (aTHX_ prev);
1169 1343
1170 if (expect_false (next->flags & CF_NEW)) 1344 if (expect_false (next->flags & CF_NEW))
… …
1177 else 1351 else
1178 load_perl (aTHX_ next); 1352 load_perl (aTHX_ next);
1179 1353
1180 prev__cctx = prev->cctx; 1354 prev__cctx = prev->cctx;
1181 1355
1182 /* possibly "free" the cctx */ 1356 /* possibly untie and reuse the cctx */
1183 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1357 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel
1359 && !(prev__cctx->flags & CC_TRACE)
1360 && !force_cctx
1361 ))
1184 { 1362 {
1185 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1186 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1187 1365
1188 prev->cctx = 0; 1366 prev->cctx = 0;
1189 1367
1190 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1191 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1199 ++next->usecount; 1377 ++next->usecount;
1200 1378
1201 if (expect_true (!next->cctx)) 1379 if (expect_true (!next->cctx))
1202 next->cctx = cctx_get (aTHX); 1380 next->cctx = cctx_get (aTHX);
1203 1381
1204 has_throw = !!next->throw; 1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1383 transfer_next = next;
1205 1384
1206 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1207 { 1386 {
1208 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1209 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1210 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1211 } 1390 }
1212 1391
1213 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1214 UNLOCK;
1215
1216 if (expect_false (has_throw))
1217 {
1218 struct coro *coro = SvSTATE (coro_current);
1219
1220 if (coro->throw)
1221 {
1222 SV *exception = coro->throw;
1223 coro->throw = 0;
1224 sv_setsv (ERRSV, exception);
1225 croak (0);
1226 }
1227 }
1228 } 1393 }
1229} 1394}
1230 1395
1231struct transfer_args
1232{
1233 struct coro *prev, *next;
1234};
1235
1236#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1237#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1238 1398
1239/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
1240 1400
1241static int 1401static int
1242coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1243{ 1403{
1244 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1245 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1246 1409
1247 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1248 1411
1249 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1250 { 1413 {
1251 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1252 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1253 LOCK;
1254 --coro_nready; 1416 --coro_nready;
1255 UNLOCK;
1256 } 1417 }
1257 else 1418 else
1258 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1259 1420
1260 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1261 { 1422 {
1262 struct coro temp; 1423 struct coro temp;
1263 1424
1264 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1265 croak ("FATAL: tried to destroy currently running coroutine");
1266 1426
1267 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1268 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1269 1429
1270 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1271 1431
1272 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1273 1433
1274 coro->slot = 0; 1434 coro->slot = 0;
1275 } 1435 }
… …
1321# define MGf_DUP 0 1481# define MGf_DUP 0
1322#endif 1482#endif
1323}; 1483};
1324 1484
1325static void 1485static void
1326prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1327{ 1487{
1328 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1329 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1330 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1331} 1491}
1332 1492
1333static void 1493static void
1334api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1335{ 1495{
1336 dTHX;
1337 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1338 1497
1339 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1340 TRANSFER (ta); 1499 TRANSFER (ta, 1);
1341} 1500}
1342 1501
1343/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1344 1503
1345static void 1504INLINE void
1346coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1347{ 1506{
1348 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1349} 1508}
1350 1509
1351static SV * 1510INLINE SV *
1352coro_deq (pTHX) 1511coro_deq (pTHX)
1353{ 1512{
1354 int prio; 1513 int prio;
1355 1514
1356 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1359 1518
1360 return 0; 1519 return 0;
1361} 1520}
1362 1521
1363static int 1522static int
1364api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1365{ 1524{
1366 dTHX;
1367 struct coro *coro; 1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1368 1528
1369 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
1370 coro_sv = SvRV (coro_sv); 1530 coro_sv = SvRV (coro_sv);
1371 1531
1372 coro = SvSTATE (coro_sv); 1532 coro = SvSTATE (coro_sv);
… …
1374 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1375 return 0; 1535 return 0;
1376 1536
1377 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1378 1538
1379 LOCK; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1380 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro);
1381 ++coro_nready; 1543 ++coro_nready;
1382 UNLOCK; 1544
1545 if (sv_hook)
1546 {
1547 dSP;
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD);
1555 SPAGAIN;
1556
1557 FREETMPS;
1558 LEAVE;
1559 }
1560
1561 if (xs_hook)
1562 xs_hook ();
1383 1563
1384 return 1; 1564 return 1;
1385} 1565}
1386 1566
1387static int 1567static int
1388api_is_ready (SV *coro_sv) 1568api_is_ready (pTHX_ SV *coro_sv)
1389{ 1569{
1390 dTHX;
1391 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1570 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1392} 1571}
1393 1572
1394static void 1573INLINE void
1395prepare_schedule (pTHX_ struct transfer_args *ta) 1574prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1396{ 1575{
1397 SV *prev_sv, *next_sv; 1576 SV *prev_sv, *next_sv;
1398 1577
1399 for (;;) 1578 for (;;)
1400 { 1579 {
1401 LOCK;
1402 next_sv = coro_deq (aTHX); 1580 next_sv = coro_deq (aTHX);
1403 1581
1404 /* nothing to schedule: call the idle handler */ 1582 /* nothing to schedule: call the idle handler */
1405 if (expect_false (!next_sv)) 1583 if (expect_false (!next_sv))
1406 { 1584 {
1407 dSP; 1585 dSP;
1408 UNLOCK;
1409 1586
1410 ENTER; 1587 ENTER;
1411 SAVETMPS; 1588 SAVETMPS;
1412 1589
1413 PUSHMARK (SP); 1590 PUSHMARK (SP);
… …
1418 FREETMPS; 1595 FREETMPS;
1419 LEAVE; 1596 LEAVE;
1420 continue; 1597 continue;
1421 } 1598 }
1422 1599
1423 ta->next = SvSTATE (next_sv); 1600 ta->next = SvSTATE_hv (next_sv);
1424 1601
1425 /* cannot transfer to destroyed coros, skip and look for next */ 1602 /* cannot transfer to destroyed coros, skip and look for next */
1426 if (expect_false (ta->next->flags & CF_DESTROYED)) 1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1427 { 1604 {
1428 UNLOCK;
1429 SvREFCNT_dec (next_sv); 1605 SvREFCNT_dec (next_sv);
1430 /* coro_nready is already taken care of by destroy */ 1606 /* coro_nready has already been taken care of by destroy */
1431 continue; 1607 continue;
1432 } 1608 }
1433 1609
1434 --coro_nready; 1610 --coro_nready;
1435 UNLOCK;
1436 break; 1611 break;
1437 } 1612 }
1438 1613
1439 /* free this only after the transfer */ 1614 /* free this only after the transfer */
1440 prev_sv = SvRV (coro_current); 1615 prev_sv = SvRV (coro_current);
1441 ta->prev = SvSTATE (prev_sv); 1616 ta->prev = SvSTATE_hv (prev_sv);
1442 TRANSFER_CHECK (*ta); 1617 TRANSFER_CHECK (*ta);
1443 assert (ta->next->flags & CF_READY); 1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1444 ta->next->flags &= ~CF_READY; 1619 ta->next->flags &= ~CF_READY;
1445 SvRV_set (coro_current, next_sv); 1620 SvRV_set (coro_current, next_sv);
1446 1621
1447 LOCK;
1448 free_coro_mortal (aTHX); 1622 free_coro_mortal (aTHX);
1449 coro_mortal = prev_sv; 1623 coro_mortal = prev_sv;
1450 UNLOCK;
1451} 1624}
1452 1625
1453static void 1626INLINE void
1454prepare_cede (pTHX_ struct transfer_args *ta) 1627prepare_cede (pTHX_ struct coro_transfer_args *ta)
1455{ 1628{
1456 api_ready (coro_current); 1629 api_ready (aTHX_ coro_current);
1457 prepare_schedule (aTHX_ ta); 1630 prepare_schedule (aTHX_ ta);
1458} 1631}
1459 1632
1633INLINE void
1634prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1635{
1636 SV *prev = SvRV (coro_current);
1637
1638 if (coro_nready)
1639 {
1640 prepare_schedule (aTHX_ ta);
1641 api_ready (aTHX_ prev);
1642 }
1643 else
1644 prepare_nop (aTHX_ ta);
1645}
1646
1647static void
1648api_schedule (pTHX)
1649{
1650 struct coro_transfer_args ta;
1651
1652 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1);
1654}
1655
1460static int 1656static int
1461prepare_cede_notself (pTHX_ struct transfer_args *ta) 1657api_cede (pTHX)
1462{ 1658{
1463 if (coro_nready) 1659 struct coro_transfer_args ta;
1464 { 1660
1465 SV *prev = SvRV (coro_current);
1466 prepare_schedule (aTHX_ ta); 1661 prepare_cede (aTHX_ &ta);
1467 api_ready (prev); 1662
1663 if (expect_true (ta.prev != ta.next))
1664 {
1665 TRANSFER (ta, 1);
1468 return 1; 1666 return 1;
1469 } 1667 }
1470 else 1668 else
1471 return 0; 1669 return 0;
1472} 1670}
1473 1671
1474static void
1475api_schedule (void)
1476{
1477 dTHX;
1478 struct transfer_args ta;
1479
1480 prepare_schedule (aTHX_ &ta);
1481 TRANSFER (ta);
1482}
1483
1484static int 1672static int
1485api_cede (void) 1673api_cede_notself (pTHX)
1486{ 1674{
1487 dTHX; 1675 if (coro_nready)
1676 {
1488 struct transfer_args ta; 1677 struct coro_transfer_args ta;
1489 1678
1490 prepare_cede (aTHX_ &ta); 1679 prepare_cede_notself (aTHX_ &ta);
1491
1492 if (expect_true (ta.prev != ta.next))
1493 {
1494 TRANSFER (ta); 1680 TRANSFER (ta, 1);
1495 return 1; 1681 return 1;
1496 } 1682 }
1497 else 1683 else
1498 return 0; 1684 return 0;
1499} 1685}
1500 1686
1501static int 1687static void
1502api_cede_notself (void)
1503{
1504 dTHX;
1505 struct transfer_args ta;
1506
1507 if (prepare_cede_notself (aTHX_ &ta))
1508 {
1509 TRANSFER (ta);
1510 return 1;
1511 }
1512 else
1513 return 0;
1514}
1515
1516static void
1517api_trace (SV *coro_sv, int flags) 1688api_trace (pTHX_ SV *coro_sv, int flags)
1518{ 1689{
1519 dTHX;
1520 struct coro *coro = SvSTATE (coro_sv); 1690 struct coro *coro = SvSTATE (coro_sv);
1521 1691
1522 if (flags & CC_TRACE) 1692 if (flags & CC_TRACE)
1523 { 1693 {
1524 if (!coro->cctx) 1694 if (!coro->cctx)
1525 coro->cctx = cctx_new (); 1695 coro->cctx = cctx_new_run ();
1526 else if (!(coro->cctx->flags & CC_TRACE)) 1696 else if (!(coro->cctx->flags & CC_TRACE))
1527 croak ("cannot enable tracing on coroutine with custom stack"); 1697 croak ("cannot enable tracing on coroutine with custom stack,");
1528 1698
1529 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1530 } 1700 }
1531 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1532 { 1702 {
… …
1537 else 1707 else
1538 coro->slot->runops = RUNOPS_DEFAULT; 1708 coro->slot->runops = RUNOPS_DEFAULT;
1539 } 1709 }
1540} 1710}
1541 1711
1712/*****************************************************************************/
1713/* PerlIO::cede */
1714
1715typedef struct
1716{
1717 PerlIOBuf base;
1718 NV next, every;
1719} PerlIOCede;
1720
1721static IV
1722PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1723{
1724 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1725
1726 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1727 self->next = nvtime () + self->every;
1728
1729 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1730}
1731
1732static SV *
1733PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1734{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736
1737 return newSVnv (self->every);
1738}
1739
1740static IV
1741PerlIOCede_flush (pTHX_ PerlIO *f)
1742{
1743 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1744 double now = nvtime ();
1745
1746 if (now >= self->next)
1747 {
1748 api_cede (aTHX);
1749 self->next = now + self->every;
1750 }
1751
1752 return PerlIOBuf_flush (aTHX_ f);
1753}
1754
1755static PerlIO_funcs PerlIO_cede =
1756{
1757 sizeof(PerlIO_funcs),
1758 "cede",
1759 sizeof(PerlIOCede),
1760 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1761 PerlIOCede_pushed,
1762 PerlIOBuf_popped,
1763 PerlIOBuf_open,
1764 PerlIOBase_binmode,
1765 PerlIOCede_getarg,
1766 PerlIOBase_fileno,
1767 PerlIOBuf_dup,
1768 PerlIOBuf_read,
1769 PerlIOBuf_unread,
1770 PerlIOBuf_write,
1771 PerlIOBuf_seek,
1772 PerlIOBuf_tell,
1773 PerlIOBuf_close,
1774 PerlIOCede_flush,
1775 PerlIOBuf_fill,
1776 PerlIOBase_eof,
1777 PerlIOBase_error,
1778 PerlIOBase_clearerr,
1779 PerlIOBase_setlinebuf,
1780 PerlIOBuf_get_base,
1781 PerlIOBuf_bufsiz,
1782 PerlIOBuf_get_ptr,
1783 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt,
1785};
1786
1787/*****************************************************************************/
1788
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP *
1800pp_restore (pTHX)
1801{
1802 dSP;
1803
1804 PUSHMARK (SP);
1805
1806 EXTEND (SP, 3);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813}
1814
1815static void
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{
1994 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv);
1996
1997 count += adjust;
1998 SvIVX (count_sv) = count;
1999
2000 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) > 0)
2002 {
2003 SV *cb;
2004
2005 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av);
2009
2010 if (SvOBJECT (cb))
2011 api_ready (aTHX_ cb);
2012 else
2013 croak ("callbacks not yet supported");
2014
2015 SvREFCNT_dec (cb);
2016
2017 --count;
2018 }
2019}
2020
2021static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{
2024 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026}
2027
2028static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2030{
2031 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0];
2033
2034 if (SvIVX (count_sv) > 0)
2035 {
2036 SvSTATE_current->on_destroy = 0;
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2038 return 0;
2039 }
2040 else
2041 {
2042 int i;
2043 /* if we were woken up but can't down, we look through the whole */
2044 /* waiters list and only add us if we aren't in there already */
2045 /* this avoids some degenerate memory usage cases */
2046
2047 for (i = 1; i <= AvFILLp (av); ++i)
2048 if (AvARRAY (av)[i] == SvRV (coro_current))
2049 return 1;
2050
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1;
2053 }
2054}
2055
2056static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{
2059 AV *av = (AV *)SvRV (arg [0]);
2060
2061 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 {
2063 frame->data = (void *)av;
2064 frame->prepare = prepare_nop;
2065 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2066 }
2067 else
2068 {
2069 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2070
2071 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2072 frame->prepare = prepare_schedule;
2073
2074 /* to avoid race conditions when a woken-up coro gets terminated */
2075 /* we arrange for a temporary on_destroy that calls adjust (0) */
2076 assert (!SvSTATE_current->on_destroy);//D
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 }
2079
2080 frame->check = slf_check_semaphore_down;
2081
2082}
2083
2084/*****************************************************************************/
2085
2086#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2087
2088/* create a closure from XS, returns a code reference */
2089/* the arg can be accessed via GENSUB_ARG from the callback */
2090/* the callback must use dXSARGS/XSRETURN */
2091static SV *
2092gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2093{
2094 CV *cv = (CV *)NEWSV (0, 0);
2095
2096 sv_upgrade ((SV *)cv, SVt_PVCV);
2097
2098 CvANON_on (cv);
2099 CvISXSUB_on (cv);
2100 CvXSUB (cv) = xsub;
2101 GENSUB_ARG = arg;
2102
2103 return newRV_noinc ((SV *)cv);
2104}
2105
2106/*****************************************************************************/
2107
1542MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2108MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1543 2109
1544PROTOTYPES: DISABLE 2110PROTOTYPES: DISABLE
1545 2111
1546BOOT: 2112BOOT:
1547{ 2113{
1548#ifdef USE_ITHREADS 2114#ifdef USE_ITHREADS
1549 MUTEX_INIT (&coro_mutex); 2115# if CORO_PTHREAD
2116 coro_thx = PERL_GET_CONTEXT;
2117# endif
1550#endif 2118#endif
1551 BOOT_PAGESIZE; 2119 BOOT_PAGESIZE;
1552 2120
1553 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1554 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1555 2123
1556 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2124 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1557 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1558 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2126 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1559 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1560 2127
1561 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2128 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1562 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2129 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1563 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2130 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1564 2131
… …
1573 main_top_env = PL_top_env; 2140 main_top_env = PL_top_env;
1574 2141
1575 while (main_top_env->je_prev) 2142 while (main_top_env->je_prev)
1576 main_top_env = main_top_env->je_prev; 2143 main_top_env = main_top_env->je_prev;
1577 2144
2145 {
2146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2147
2148 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2149 hv_store_ent (PL_custom_op_names, slf,
2150 newSVpv ("coro_slf", 0), 0);
2151
2152 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2153 hv_store_ent (PL_custom_op_descs, slf,
2154 newSVpv ("coro schedule like function", 0), 0);
2155 }
2156
1578 coroapi.ver = CORO_API_VERSION; 2157 coroapi.ver = CORO_API_VERSION;
1579 coroapi.rev = CORO_API_REVISION; 2158 coroapi.rev = CORO_API_REVISION;
2159
1580 coroapi.transfer = api_transfer; 2160 coroapi.transfer = api_transfer;
2161
2162 coroapi.sv_state = SvSTATE_;
2163 coroapi.execute_slf = api_execute_slf;
2164 coroapi.prepare_nop = prepare_nop;
2165 coroapi.prepare_schedule = prepare_schedule;
2166 coroapi.prepare_cede = prepare_cede;
2167 coroapi.prepare_cede_notself = prepare_cede_notself;
2168
2169 {
2170 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2171
2172 if (!svp) croak ("Time::HiRes is required");
2173 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2174
2175 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2176 }
1581 2177
1582 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2178 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1583} 2179}
1584 2180
1585SV * 2181SV *
… …
1609 av_push (coro->args, newSVsv (ST (i))); 2205 av_push (coro->args, newSVsv (ST (i)));
1610} 2206}
1611 OUTPUT: 2207 OUTPUT:
1612 RETVAL 2208 RETVAL
1613 2209
1614# these not obviously related functions are all rolled into the same xs
1615# function to increase chances that they all will call transfer with the same
1616# stack offset
1617void 2210void
1618_set_stacklevel (...) 2211_set_stacklevel (...)
1619 ALIAS: 2212 CODE:
1620 Coro::State::transfer = 1 2213 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1621 Coro::schedule = 2
1622 Coro::cede = 3
1623 Coro::cede_notself = 4
1624 CODE:
1625{
1626 struct transfer_args ta;
1627 2214
1628 PUTBACK; 2215void
1629 switch (ix) 2216transfer (...)
1630 { 2217 PROTOTYPE: $$
1631 case 0: 2218 CODE:
1632 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2219 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1633 ta.next = 0;
1634 break;
1635
1636 case 1:
1637 if (items != 2)
1638 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1639
1640 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1641 break;
1642
1643 case 2:
1644 prepare_schedule (aTHX_ &ta);
1645 break;
1646
1647 case 3:
1648 prepare_cede (aTHX_ &ta);
1649 break;
1650
1651 case 4:
1652 if (!prepare_cede_notself (aTHX_ &ta))
1653 XSRETURN_EMPTY;
1654
1655 break;
1656 }
1657 SPAGAIN;
1658
1659 BARRIER;
1660 PUTBACK;
1661 TRANSFER (ta);
1662 SPAGAIN; /* might be the sp of a different coroutine now */
1663 /* be extra careful not to ever do anything after TRANSFER */
1664}
1665 2220
1666bool 2221bool
1667_destroy (SV *coro_sv) 2222_destroy (SV *coro_sv)
1668 CODE: 2223 CODE:
1669 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2224 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1670 OUTPUT: 2225 OUTPUT:
1671 RETVAL 2226 RETVAL
1672 2227
1673void 2228void
1674_exit (code) 2229_exit (int code)
1675 int code
1676 PROTOTYPE: $ 2230 PROTOTYPE: $
1677 CODE: 2231 CODE:
1678 _exit (code); 2232 _exit (code);
1679 2233
1680int 2234int
1681cctx_stacksize (int new_stacksize = 0) 2235cctx_stacksize (int new_stacksize = 0)
2236 PROTOTYPE: ;$
1682 CODE: 2237 CODE:
1683 RETVAL = coro_stacksize; 2238 RETVAL = cctx_stacksize;
1684 if (new_stacksize) 2239 if (new_stacksize)
2240 {
1685 coro_stacksize = new_stacksize; 2241 cctx_stacksize = new_stacksize;
2242 ++cctx_gen;
2243 }
1686 OUTPUT: 2244 OUTPUT:
1687 RETVAL 2245 RETVAL
1688 2246
1689int 2247int
2248cctx_max_idle (int max_idle = 0)
2249 PROTOTYPE: ;$
2250 CODE:
2251 RETVAL = cctx_max_idle;
2252 if (max_idle > 1)
2253 cctx_max_idle = max_idle;
2254 OUTPUT:
2255 RETVAL
2256
2257int
1690cctx_count () 2258cctx_count ()
2259 PROTOTYPE:
1691 CODE: 2260 CODE:
1692 RETVAL = cctx_count; 2261 RETVAL = cctx_count;
1693 OUTPUT: 2262 OUTPUT:
1694 RETVAL 2263 RETVAL
1695 2264
1696int 2265int
1697cctx_idle () 2266cctx_idle ()
2267 PROTOTYPE:
1698 CODE: 2268 CODE:
1699 RETVAL = cctx_idle; 2269 RETVAL = cctx_idle;
1700 OUTPUT: 2270 OUTPUT:
1701 RETVAL 2271 RETVAL
1702 2272
1703void 2273void
1704list () 2274list ()
2275 PROTOTYPE:
1705 PPCODE: 2276 PPCODE:
1706{ 2277{
1707 struct coro *coro; 2278 struct coro *coro;
1708 for (coro = coro_first; coro; coro = coro->next) 2279 for (coro = coro_first; coro; coro = coro->next)
1709 if (coro->hv) 2280 if (coro->hv)
… …
1714call (Coro::State coro, SV *coderef) 2285call (Coro::State coro, SV *coderef)
1715 ALIAS: 2286 ALIAS:
1716 eval = 1 2287 eval = 1
1717 CODE: 2288 CODE:
1718{ 2289{
1719 if (coro->mainstack) 2290 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1720 { 2291 {
1721 struct coro temp; 2292 struct coro temp;
1722 2293
1723 if (!(coro->flags & CF_RUNNING)) 2294 if (!(coro->flags & CF_RUNNING))
1724 { 2295 {
… …
1768 RETVAL = boolSV (coro->flags & ix); 2339 RETVAL = boolSV (coro->flags & ix);
1769 OUTPUT: 2340 OUTPUT:
1770 RETVAL 2341 RETVAL
1771 2342
1772void 2343void
2344throw (Coro::State self, SV *throw = &PL_sv_undef)
2345 PROTOTYPE: $;$
2346 CODE:
2347 SvREFCNT_dec (self->throw);
2348 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2349
2350void
1773api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2351api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2352 PROTOTYPE: $;$
2353 C_ARGS: aTHX_ coro, flags
1774 2354
1775SV * 2355SV *
1776has_stack (Coro::State coro) 2356has_cctx (Coro::State coro)
1777 PROTOTYPE: $ 2357 PROTOTYPE: $
1778 CODE: 2358 CODE:
1779 RETVAL = boolSV (!!coro->cctx); 2359 RETVAL = boolSV (!!coro->cctx);
1780 OUTPUT: 2360 OUTPUT:
1781 RETVAL 2361 RETVAL
… …
1786 CODE: 2366 CODE:
1787 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2367 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1788 OUTPUT: 2368 OUTPUT:
1789 RETVAL 2369 RETVAL
1790 2370
1791IV 2371UV
1792rss (Coro::State coro) 2372rss (Coro::State coro)
1793 PROTOTYPE: $ 2373 PROTOTYPE: $
1794 ALIAS: 2374 ALIAS:
1795 usecount = 1 2375 usecount = 1
1796 CODE: 2376 CODE:
… …
1800 case 1: RETVAL = coro->usecount; break; 2380 case 1: RETVAL = coro->usecount; break;
1801 } 2381 }
1802 OUTPUT: 2382 OUTPUT:
1803 RETVAL 2383 RETVAL
1804 2384
2385void
2386force_cctx ()
2387 PROTOTYPE:
2388 CODE:
2389 SvSTATE_current->cctx->idle_sp = 0;
2390
2391void
2392swap_defsv (Coro::State self)
2393 PROTOTYPE: $
2394 ALIAS:
2395 swap_defav = 1
2396 CODE:
2397 if (!self->slot)
2398 croak ("cannot swap state with coroutine that has no saved state,");
2399 else
2400 {
2401 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2402 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2403
2404 SV *tmp = *src; *src = *dst; *dst = tmp;
2405 }
1805 2406
1806MODULE = Coro::State PACKAGE = Coro 2407MODULE = Coro::State PACKAGE = Coro
1807 2408
1808BOOT: 2409BOOT:
1809{ 2410{
1810 int i; 2411 int i;
1811 2412
2413 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1812 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1813 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1814 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1815 2416
1816 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2417 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1817 SvREADONLY_on (coro_current); 2418 SvREADONLY_on (coro_current);
1818 2419
1819 coro_stash = gv_stashpv ("Coro", TRUE); 2420 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1827 2428
1828 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2429 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1829 coro_ready[i] = newAV (); 2430 coro_ready[i] = newAV ();
1830 2431
1831 { 2432 {
1832 SV *sv = perl_get_sv ("Coro::API", TRUE); 2433 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1833 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1834 2434
1835 coroapi.schedule = api_schedule; 2435 coroapi.schedule = api_schedule;
1836 coroapi.cede = api_cede; 2436 coroapi.cede = api_cede;
1837 coroapi.cede_notself = api_cede_notself; 2437 coroapi.cede_notself = api_cede_notself;
1838 coroapi.ready = api_ready; 2438 coroapi.ready = api_ready;
1839 coroapi.is_ready = api_is_ready; 2439 coroapi.is_ready = api_is_ready;
1840 coroapi.nready = &coro_nready; 2440 coroapi.nready = coro_nready;
1841 coroapi.current = coro_current; 2441 coroapi.current = coro_current;
1842 2442
1843 GCoroAPI = &coroapi; 2443 GCoroAPI = &coroapi;
1844 sv_setiv (sv, (IV)&coroapi); 2444 sv_setiv (sv, (IV)&coroapi);
1845 SvREADONLY_on (sv); 2445 SvREADONLY_on (sv);
1846 } 2446 }
1847} 2447}
2448
2449void
2450schedule (...)
2451 CODE:
2452 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2453
2454void
2455cede (...)
2456 CODE:
2457 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2458
2459void
2460cede_notself (...)
2461 CODE:
2462 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1848 2463
1849void 2464void
1850_set_current (SV *current) 2465_set_current (SV *current)
1851 PROTOTYPE: $ 2466 PROTOTYPE: $
1852 CODE: 2467 CODE:
1853 SvREFCNT_dec (SvRV (coro_current)); 2468 SvREFCNT_dec (SvRV (coro_current));
1854 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2469 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2470
2471void
2472_set_readyhook (SV *hook)
2473 PROTOTYPE: $
2474 CODE:
2475 SvREFCNT_dec (coro_readyhook);
2476 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1855 2477
1856int 2478int
1857prio (Coro::State coro, int newprio = 0) 2479prio (Coro::State coro, int newprio = 0)
2480 PROTOTYPE: $;$
1858 ALIAS: 2481 ALIAS:
1859 nice = 1 2482 nice = 1
1860 CODE: 2483 CODE:
1861{ 2484{
1862 RETVAL = coro->prio; 2485 RETVAL = coro->prio;
… …
1877 2500
1878SV * 2501SV *
1879ready (SV *self) 2502ready (SV *self)
1880 PROTOTYPE: $ 2503 PROTOTYPE: $
1881 CODE: 2504 CODE:
1882 RETVAL = boolSV (api_ready (self)); 2505 RETVAL = boolSV (api_ready (aTHX_ self));
1883 OUTPUT: 2506 OUTPUT:
1884 RETVAL 2507 RETVAL
1885 2508
1886int 2509int
1887nready (...) 2510nready (...)
… …
1889 CODE: 2512 CODE:
1890 RETVAL = coro_nready; 2513 RETVAL = coro_nready;
1891 OUTPUT: 2514 OUTPUT:
1892 RETVAL 2515 RETVAL
1893 2516
1894void
1895throw (Coro::State self, SV *throw = &PL_sv_undef)
1896 PROTOTYPE: $;$
1897 CODE:
1898 SvREFCNT_dec (self->throw);
1899 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1900
1901# for async_pool speedup 2517# for async_pool speedup
1902void 2518void
1903_pool_1 (SV *cb) 2519_pool_1 (SV *cb)
1904 CODE: 2520 CODE:
1905{ 2521{
1906 struct coro *coro = SvSTATE (coro_current);
1907 HV *hv = (HV *)SvRV (coro_current); 2522 HV *hv = (HV *)SvRV (coro_current);
2523 struct coro *coro = SvSTATE_hv ((SV *)hv);
1908 AV *defav = GvAV (PL_defgv); 2524 AV *defav = GvAV (PL_defgv);
1909 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2525 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1910 AV *invoke_av; 2526 AV *invoke_av;
1911 int i, len; 2527 int i, len;
1912 2528
1913 if (!invoke) 2529 if (!invoke)
1914 { 2530 {
1915 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2531 SV *old = PL_diehook;
2532 PL_diehook = 0;
2533 SvREFCNT_dec (old);
1916 croak ("\3async_pool terminate\2\n"); 2534 croak ("\3async_pool terminate\2\n");
1917 } 2535 }
1918 2536
1919 SvREFCNT_dec (coro->saved_deffh); 2537 SvREFCNT_dec (coro->saved_deffh);
1920 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2538 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1921 2539
1922 hv_store (hv, "desc", sizeof ("desc") - 1, 2540 hv_store (hv, "desc", sizeof ("desc") - 1,
1923 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2541 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1924 2542
1925 invoke_av = (AV *)SvRV (invoke); 2543 invoke_av = (AV *)SvRV (invoke);
… …
1929 2547
1930 if (len > 0) 2548 if (len > 0)
1931 { 2549 {
1932 av_fill (defav, len - 1); 2550 av_fill (defav, len - 1);
1933 for (i = 0; i < len; ++i) 2551 for (i = 0; i < len; ++i)
1934 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2552 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1935 } 2553 }
1936
1937 SvREFCNT_dec (invoke);
1938} 2554}
1939 2555
1940void 2556void
1941_pool_2 (SV *cb) 2557_pool_2 (SV *cb)
1942 CODE: 2558 CODE:
1943{ 2559{
1944 struct coro *coro = SvSTATE (coro_current); 2560 struct coro *coro = SvSTATE_current;
1945 2561
1946 sv_setsv (cb, &PL_sv_undef); 2562 sv_setsv (cb, &PL_sv_undef);
1947 2563
1948 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2564 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1949 coro->saved_deffh = 0; 2565 coro->saved_deffh = 0;
1950 2566
1951 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2567 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1952 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2568 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1953 { 2569 {
1954 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2570 SV *old = PL_diehook;
2571 PL_diehook = 0;
2572 SvREFCNT_dec (old);
1955 croak ("\3async_pool terminate\2\n"); 2573 croak ("\3async_pool terminate\2\n");
1956 } 2574 }
1957 2575
1958 av_clear (GvAV (PL_defgv)); 2576 av_clear (GvAV (PL_defgv));
1959 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2577 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1960 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1961 2579
1962 coro->prio = 0; 2580 coro->prio = 0;
1963 2581
1964 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2582 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1965 api_trace (coro_current, 0); 2583 api_trace (aTHX_ coro_current, 0);
1966 2584
1967 av_push (av_async_pool, newSVsv (coro_current)); 2585 av_push (av_async_pool, newSVsv (coro_current));
1968} 2586}
1969 2587
1970 2588
1971MODULE = Coro::State PACKAGE = Coro::AIO 2589MODULE = Coro::State PACKAGE = Coro::AIO
1972 2590
1973SV * 2591void
1974_get_state () 2592_get_state (SV *self)
2593 PROTOTYPE: $
1975 CODE: 2594 PPCODE:
1976{ 2595{
1977 struct io_state *data; 2596 AV *defav = GvAV (PL_defgv);
1978 2597 AV *av = newAV ();
2598 int i;
1979 RETVAL = newSV (sizeof (struct io_state)); 2599 SV *data_sv = newSV (sizeof (struct io_state));
1980 data = (struct io_state *)SvPVX (RETVAL); 2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1981 SvCUR_set (RETVAL, sizeof (struct io_state)); 2601 SvCUR_set (data_sv, sizeof (struct io_state));
1982 SvPOK_only (RETVAL); 2602 SvPOK_only (data_sv);
1983 2603
1984 data->errorno = errno; 2604 data->errorno = errno;
1985 data->laststype = PL_laststype; 2605 data->laststype = PL_laststype;
1986 data->laststatval = PL_laststatval; 2606 data->laststatval = PL_laststatval;
1987 data->statcache = PL_statcache; 2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
1988} 2619}
1989 OUTPUT:
1990 RETVAL
1991 2620
1992void 2621void
1993_set_state (char *data_) 2622_set_state (SV *state)
1994 PROTOTYPE: $ 2623 PROTOTYPE: $
1995 CODE: 2624 PPCODE:
1996{ 2625{
1997 struct io_state *data = (void *)data_; 2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
1998 2629
1999 errno = data->errorno; 2630 errno = data->errorno;
2000 PL_laststype = data->laststype; 2631 PL_laststype = data->laststype;
2001 PL_laststatval = data->laststatval; 2632 PL_laststatval = data->laststatval;
2002 PL_statcache = data->statcache; 2633 PL_statcache = data->statcache;
2003}
2004 2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646void
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666
2667 --incede;
2668}
2669
2670
2671MODULE = Coro::State PACKAGE = PerlIO::cede
2672
2673BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675
2676MODULE = Coro::State PACKAGE = Coro::Semaphore
2677
2678SV *
2679new (SV *klass, SV *count_ = 0)
2680 CODE:
2681{
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2683 AV *av = newAV ();
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2686}
2687 OUTPUT:
2688 RETVAL
2689
2690SV *
2691count (SV *self)
2692 CODE:
2693 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2694 OUTPUT:
2695 RETVAL
2696
2697void
2698up (SV *self, int adjust = 1)
2699 ALIAS:
2700 adjust = 1
2701 CODE:
2702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703
2704void
2705down (SV *self)
2706 CODE:
2707 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2708
2709void
2710try (SV *self)
2711 PPCODE:
2712{
2713 AV *av = (AV *)SvRV (self);
2714 SV *count_sv = AvARRAY (av)[0];
2715 IV count = SvIVX (count_sv);
2716
2717 if (count > 0)
2718 {
2719 --count;
2720 SvIVX (count_sv) = count;
2721 XSRETURN_YES;
2722 }
2723 else
2724 XSRETURN_NO;
2725}
2726
2727void
2728waiters (SV *self)
2729 CODE:
2730{
2731 AV *av = (AV *)SvRV (self);
2732
2733 if (GIMME_V == G_SCALAR)
2734 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2735 else
2736 {
2737 int i;
2738 EXTEND (SP, AvFILLp (av) + 1 - 1);
2739 for (i = 1; i <= AvFILLp (av); ++i)
2740 PUSHs (newSVsv (AvARRAY (av)[i]));
2741 }
2742}
2743

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