ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.215 by root, Sun Oct 14 19:34:09 2007 UTC vs.
Revision 1.278 by root, Sun Nov 16 07:09:28 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
147
128static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
130# 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
131#else 155#else
156
132# define LOCK (void)0 157# define LOCK (void)0
133# define UNLOCK (void)0 158# define UNLOCK (void)0
159
134#endif 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
135 166
136/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
137struct io_state 168struct io_state
138{ 169{
170 AV *res;
139 int errorno; 171 int errorno;
140 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
141 int laststatval; 173 int laststatval;
142 Stat_t statcache; 174 Stat_t statcache;
143}; 175};
144 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
145static size_t coro_stacksize = CORO_STACKSIZE; 180static size_t cctx_stacksize = CORO_STACKSIZE;
146static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
147static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
148static JMPENV *main_top_env; 183static JMPENV *main_top_env;
149static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
150static 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;
151 187
152static GV *irsgv; /* $/ */ 188static GV *irsgv; /* $/ */
153static GV *stdoutgv; /* *STDOUT */ 189static GV *stdoutgv; /* *STDOUT */
154static SV *rv_diehook; 190static SV *rv_diehook;
155static SV *rv_warnhook; 191static SV *rv_warnhook;
… …
157 193
158/* async_pool helper stuff */ 194/* async_pool helper stuff */
159static SV *sv_pool_rss; 195static SV *sv_pool_rss;
160static SV *sv_pool_size; 196static SV *sv_pool_size;
161static AV *av_async_pool; 197static AV *av_async_pool;
198
199/* Coro::AnyEvent */
200static SV *sv_activity;
162 201
163static struct coro_cctx *cctx_first; 202static struct coro_cctx *cctx_first;
164static int cctx_count, cctx_idle; 203static int cctx_count, cctx_idle;
165 204
166enum { 205enum {
… …
171 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
173}; 212};
174 213
175/* this is a structure representing a c-level coroutine */ 214/* this is a structure representing a c-level coroutine */
176typedef struct coro_cctx { 215typedef struct coro_cctx
216{
177 struct coro_cctx *next; 217 struct coro_cctx *next;
178 218
179 /* the stack */ 219 /* the stack */
180 void *sptr; 220 void *sptr;
181 size_t ssize; 221 size_t ssize;
… …
184 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 224 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 */ 225 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
186 JMPENV *top_env; 226 JMPENV *top_env;
187 coro_context cctx; 227 coro_context cctx;
188 228
229 U32 gen;
189#if CORO_USE_VALGRIND 230#if CORO_USE_VALGRIND
190 int valgrind_id; 231 int valgrind_id;
191#endif 232#endif
192 unsigned char flags; 233 unsigned char flags;
193} coro_cctx; 234} coro_cctx;
… …
198 CF_NEW = 0x0004, /* has never been switched to */ 239 CF_NEW = 0x0004, /* has never been switched to */
199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
200}; 241};
201 242
202/* the structure where most of the perl state is stored, overlaid on the cxstack */ 243/* the structure where most of the perl state is stored, overlaid on the cxstack */
203typedef struct { 244typedef struct
245{
204 SV *defsv; 246 SV *defsv;
205 AV *defav; 247 AV *defav;
206 SV *errsv; 248 SV *errsv;
207 SV *irsgv; 249 SV *irsgv;
208#define VAR(name,type) type name; 250#define VAR(name,type) type name;
… …
212 254
213#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
214 256
215/* this is a structure representing a perl-level coroutine */ 257/* this is a structure representing a perl-level coroutine */
216struct coro { 258struct coro {
217 /* the c coroutine allocated to this perl coroutine, if any */ 259 /* the C coroutine allocated to this perl coroutine, if any */
218 coro_cctx *cctx; 260 coro_cctx *cctx;
219 261
220 /* process data */ 262 /* process data */
263 struct CoroSLF slf_frame; /* saved slf frame */
221 AV *mainstack; 264 AV *mainstack;
222 perl_slots *slot; /* basically the saved sp */ 265 perl_slots *slot; /* basically the saved sp */
223 266
224 AV *args; /* data associated with this coroutine (initial args) */ 267 AV *args; /* data associated with this coroutine (initial args) */
225 int refcnt; /* coroutines are refcounted, yes */ 268 int refcnt; /* coroutines are refcounted, yes */
… …
240 struct coro *next, *prev; 283 struct coro *next, *prev;
241}; 284};
242 285
243typedef struct coro *Coro__State; 286typedef struct coro *Coro__State;
244typedef struct coro *Coro__State_or_hashref; 287typedef struct coro *Coro__State_or_hashref;
288
289static struct CoroSLF slf_frame; /* the current slf frame */
245 290
246/** Coro ********************************************************************/ 291/** Coro ********************************************************************/
247 292
248#define PRIO_MAX 3 293#define PRIO_MAX 3
249#define PRIO_HIGH 1 294#define PRIO_HIGH 1
… …
252#define PRIO_IDLE -3 297#define PRIO_IDLE -3
253#define PRIO_MIN -4 298#define PRIO_MIN -4
254 299
255/* for Coro.pm */ 300/* for Coro.pm */
256static SV *coro_current; 301static SV *coro_current;
302static SV *coro_readyhook;
257static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
258static int coro_nready;
259static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
260 306
261/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
262 308
263static SV * 309static SV *
264coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
265{ 311{
266#if PERL_VERSION_ATLEAST (5,9,0) 312#if PERL_VERSION_ATLEAST (5,10,0)
267 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
268 get_sv (name, create); 314 get_sv (name, create);
269#endif 315#endif
270 return get_sv (name, create); 316 return get_sv (name, create);
271} 317}
272 318
273static AV * 319static AV *
274coro_get_av (pTHX_ const char *name, int create) 320coro_get_av (pTHX_ const char *name, int create)
275{ 321{
276#if PERL_VERSION_ATLEAST (5,9,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
277 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
278 get_av (name, create); 324 get_av (name, create);
279#endif 325#endif
280 return get_av (name, create); 326 return get_av (name, create);
281} 327}
282 328
283static HV * 329static HV *
284coro_get_hv (pTHX_ const char *name, int create) 330coro_get_hv (pTHX_ const char *name, int create)
285{ 331{
286#if PERL_VERSION_ATLEAST (5,9,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
287 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
288 get_hv (name, create); 334 get_hv (name, create);
289#endif 335#endif
290 return get_hv (name, create); 336 return get_hv (name, create);
291} 337}
… …
296 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
297 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
298 344
299 newpadlist = newAV (); 345 newpadlist = newAV ();
300 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
301#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
302 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
303#else 349#else
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
305#endif 351#endif
306 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
307 --AvFILLp (padlist); 353 --AvFILLp (padlist);
308 354
309 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
310 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
311 357
312 return newpadlist; 358 return newpadlist;
313} 359}
314 360
… …
344 390
345 /* casting is fun. */ 391 /* casting is fun. */
346 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
347 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
348 394
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396
349 return 0; 397 return 0;
350} 398}
351 399
352#define CORO_MAGIC_type_cv PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
353#define CORO_MAGIC_type_state PERL_MAGIC_ext 401#define CORO_MAGIC_type_state PERL_MAGIC_ext
… …
355static MGVTBL coro_cv_vtbl = { 403static MGVTBL coro_cv_vtbl = {
356 0, 0, 0, 0, 404 0, 0, 0, 0,
357 coro_cv_free 405 coro_cv_free
358}; 406};
359 407
360#define CORO_MAGIC(sv,type) \ 408#define CORO_MAGIC(sv, type) \
361 SvMAGIC (sv) \ 409 SvMAGIC (sv) \
362 ? SvMAGIC (sv)->mg_type == type \ 410 ? SvMAGIC (sv)->mg_type == type \
363 ? SvMAGIC (sv) \ 411 ? SvMAGIC (sv) \
364 : mg_find (sv, type) \ 412 : mg_find (sv, type) \
365 : 0 413 : 0
366 414
367#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 415#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) 416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
369 417
370static struct coro * 418INLINE struct coro *
371SvSTATE_ (pTHX_ SV *coro) 419SvSTATE_ (pTHX_ SV *coro)
372{ 420{
373 HV *stash; 421 HV *stash;
374 MAGIC *mg; 422 MAGIC *mg;
375 423
… …
403 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
404 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
405 else 453 else
406 { 454 {
407#if CORO_PREFER_PERL_FUNCTIONS 455#if CORO_PREFER_PERL_FUNCTIONS
408 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
409 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
410 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
411 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
412 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
413#else 462#else
… …
465 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
466 } 515 }
467 516
468 PUTBACK; 517 PUTBACK;
469 } 518 }
519
520 slf_frame = c->slf_frame;
470} 521}
471 522
472static void 523static void
473save_perl (pTHX_ Coro__State c) 524save_perl (pTHX_ Coro__State c)
474{ 525{
526 c->slf_frame = slf_frame;
527
475 { 528 {
476 dSP; 529 dSP;
477 I32 cxix = cxstack_ix; 530 I32 cxix = cxstack_ix;
478 PERL_CONTEXT *ccstk = cxstack; 531 PERL_CONTEXT *ccstk = cxstack;
479 PERL_SI *top_si = PL_curstackinfo; 532 PERL_SI *top_si = PL_curstackinfo;
… …
497 550
498 if (expect_true (CvDEPTH (cv))) 551 if (expect_true (CvDEPTH (cv)))
499 { 552 {
500 EXTEND (SP, 3); 553 EXTEND (SP, 3);
501 PUSHs ((SV *)CvPADLIST (cv)); 554 PUSHs ((SV *)CvPADLIST (cv));
502 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
503 PUSHs ((SV *)cv); 556 PUSHs ((SV *)cv);
504 557
505 CvDEPTH (cv) = 0; 558 CvDEPTH (cv) = 0;
506 get_padlist (aTHX_ cv); 559 get_padlist (aTHX_ cv);
507 } 560 }
… …
546 #undef VAR 599 #undef VAR
547 } 600 }
548} 601}
549 602
550/* 603/*
551 * allocate various perl stacks. This is an exact copy 604 * allocate various perl stacks. This is almost an exact copy
552 * of perl.c:init_stacks, except that it uses less memory 605 * of perl.c:init_stacks, except that it uses less memory
553 * on the (sometimes correct) assumption that coroutines do 606 * on the (sometimes correct) assumption that coroutines do
554 * not usually need a lot of stackspace. 607 * not usually need a lot of stackspace.
555 */ 608 */
556#if CORO_PREFER_PERL_FUNCTIONS 609#if CORO_PREFER_PERL_FUNCTIONS
… …
587 640
588 New(54,PL_savestack,24,ANY); 641 New(54,PL_savestack,24,ANY);
589 PL_savestack_ix = 0; 642 PL_savestack_ix = 0;
590 PL_savestack_max = 24; 643 PL_savestack_max = 24;
591 644
592#if !PERL_VERSION_ATLEAST (5,9,0) 645#if !PERL_VERSION_ATLEAST (5,10,0)
593 New(54,PL_retstack,4,OP*); 646 New(54,PL_retstack,4,OP*);
594 PL_retstack_ix = 0; 647 PL_retstack_ix = 0;
595 PL_retstack_max = 4; 648 PL_retstack_max = 4;
596#endif 649#endif
597} 650}
… …
599 652
600/* 653/*
601 * destroy the stacks, the callchain etc... 654 * destroy the stacks, the callchain etc...
602 */ 655 */
603static void 656static void
604coro_destroy_stacks (pTHX) 657coro_destruct_stacks (pTHX)
605{ 658{
606 while (PL_curstackinfo->si_next) 659 while (PL_curstackinfo->si_next)
607 PL_curstackinfo = PL_curstackinfo->si_next; 660 PL_curstackinfo = PL_curstackinfo->si_next;
608 661
609 while (PL_curstackinfo) 662 while (PL_curstackinfo)
… …
620 673
621 Safefree (PL_tmps_stack); 674 Safefree (PL_tmps_stack);
622 Safefree (PL_markstack); 675 Safefree (PL_markstack);
623 Safefree (PL_scopestack); 676 Safefree (PL_scopestack);
624 Safefree (PL_savestack); 677 Safefree (PL_savestack);
625#if !PERL_VERSION_ATLEAST (5,9,0) 678#if !PERL_VERSION_ATLEAST (5,10,0)
626 Safefree (PL_retstack); 679 Safefree (PL_retstack);
627#endif 680#endif
628} 681}
629 682
630static size_t 683static size_t
… …
646 #undef VAR 699 #undef VAR
647 } 700 }
648 else 701 else
649 slot = coro->slot; 702 slot = coro->slot;
650 703
704 if (slot)
705 {
651 rss += sizeof (slot->curstackinfo); 706 rss += sizeof (slot->curstackinfo);
652 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
653 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
654 rss += slot->tmps_max * sizeof (SV *); 709 rss += slot->tmps_max * sizeof (SV *);
655 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
656 rss += slot->scopestack_max * sizeof (I32); 711 rss += slot->scopestack_max * sizeof (I32);
657 rss += slot->savestack_max * sizeof (ANY); 712 rss += slot->savestack_max * sizeof (ANY);
658 713
659#if !PERL_VERSION_ATLEAST (5,9,0) 714#if !PERL_VERSION_ATLEAST (5,10,0)
660 rss += slot->retstack_max * sizeof (OP *); 715 rss += slot->retstack_max * sizeof (OP *);
661#endif 716#endif
717 }
662 } 718 }
663 719
664 return rss; 720 return rss;
665} 721}
666 722
667/** coroutine stack handling ************************************************/ 723/** coroutine stack handling ************************************************/
668 724
669#if 0
670static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 725static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
727static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
728
729/* apparently < 5.8.8 */
730#ifndef MgPV_nolen_const
731#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
732 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
733 (const char*)(mg)->mg_ptr)
734#endif
671 735
672/* 736/*
673 * This overrides the default magic get method of %SIG elements. 737 * 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 738 * 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 739 * and instead of tryign to save and restore the hash elements, we just provide
… …
679 * when a schedule happens then, but we ignore this. 743 * when a schedule happens then, but we ignore this.
680 */ 744 */
681static int 745static int
682coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
683{ 747{
684 return orig_sigelem_get (aTHX_ sv, mg);
685 const char *s = MgPV_nolen_const (mg); 748 const char *s = MgPV_nolen_const (mg);
686 749
687 if (*s == '_') 750 if (*s == '_')
688 { 751 {
689 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 752 SV **svp = 0;
690 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 753
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756
757 if (svp)
758 {
759 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
760 return 0;
761 }
762 }
763
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765}
766
767static int
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{
770 const char *s = MgPV_nolen_const (mg);
771
772 if (*s == '_')
691 } 773 {
774 SV **svp = 0;
692 775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 SV *old = *svp;
782 *svp = 0;
783 SvREFCNT_dec (old);
784 return 0;
785 }
786 }
787
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789}
790
791static int
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{
794 const char *s = MgPV_nolen_const (mg);
795
796 if (*s == '_')
797 {
798 SV **svp = 0;
799
800 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802
803 if (svp)
804 {
805 SV *old = *svp;
806 *svp = newSVsv (sv);
807 SvREFCNT_dec (old);
808 return 0;
809 }
810 }
811
693 return orig_sigelem_get (aTHX_ sv, mg); 812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
694} 813}
695#endif 814
815static void
816prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{
818 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta;
820}
821
822static int
823slf_check_nop (pTHX_ struct CoroSLF *frame)
824{
825 return 0;
826}
696 827
697static void 828static void
698coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
699{ 830{
700 /* 831 /*
… …
709 PL_curpm = 0; 840 PL_curpm = 0;
710 PL_curpad = 0; 841 PL_curpad = 0;
711 PL_localizing = 0; 842 PL_localizing = 0;
712 PL_dirty = 0; 843 PL_dirty = 0;
713 PL_restartop = 0; 844 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0;
847#endif
714 848
715 /* recreate the die/warn hooks */ 849 /* recreate the die/warn hooks */
716 PL_diehook = 0; 850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
717 hv_store (hv_sig, "__DIE__", sizeof ("__DIE__") - 1, newSV (0), 0); 851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
718 PL_diehook = SvREFCNT_inc (rv_diehook);
719
720 PL_warnhook = 0;
721 hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, newSV (0), 0);
722 PL_warnhook = SvREFCNT_inc (rv_warnhook);
723 852
724 GvSV (PL_defgv) = newSV (0); 853 GvSV (PL_defgv) = newSV (0);
725 GvAV (PL_defgv) = coro->args; coro->args = 0; 854 GvAV (PL_defgv) = coro->args; coro->args = 0;
726 GvSV (PL_errgv) = newSV (0); 855 GvSV (PL_errgv) = newSV (0);
727 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
728 PL_rs = newSVsv (GvSV (irsgv)); 857 PL_rs = newSVsv (GvSV (irsgv));
729 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
730 859
731 { 860 {
732 dSP; 861 dSP;
733 LOGOP myop; 862 UNOP myop;
734 863
735 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
736 myop.op_next = Nullop; 865 myop.op_next = Nullop;
737 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
738 867
739 PUSHMARK (SP); 868 PUSHMARK (SP);
740 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
743 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
744 SPAGAIN; 873 SPAGAIN;
745 } 874 }
746 875
747 /* this newly created coroutine might be run on an existing cctx which most 876 /* this newly created coroutine might be run on an existing cctx which most
748 * likely was suspended in set_stacklevel, called from entersub. 877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
749 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
750 * so we ENTER here for symmetry
751 */ 878 */
752 ENTER; 879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
753} 881}
754 882
755static void 883static void
756coro_destroy (pTHX_ struct coro *coro) 884coro_destruct (pTHX_ struct coro *coro)
757{ 885{
758 if (!IN_DESTRUCT) 886 if (!IN_DESTRUCT)
759 { 887 {
760 /* restore all saved variables and stuff */ 888 /* restore all saved variables and stuff */
761 LEAVE_SCOPE (0); 889 LEAVE_SCOPE (0);
… …
783 SvREFCNT_dec (PL_warnhook); 911 SvREFCNT_dec (PL_warnhook);
784 912
785 SvREFCNT_dec (coro->saved_deffh); 913 SvREFCNT_dec (coro->saved_deffh);
786 SvREFCNT_dec (coro->throw); 914 SvREFCNT_dec (coro->throw);
787 915
788 coro_destroy_stacks (aTHX); 916 coro_destruct_stacks (aTHX);
789} 917}
790 918
791static void 919INLINE void
792free_coro_mortal (pTHX) 920free_coro_mortal (pTHX)
793{ 921{
794 if (expect_true (coro_mortal)) 922 if (expect_true (coro_mortal))
795 { 923 {
796 SvREFCNT_dec (coro_mortal); 924 SvREFCNT_dec (coro_mortal);
… …
830 : cx->blk_gimme == G_SCALAR ? bot + 1 958 : cx->blk_gimme == G_SCALAR ? bot + 1
831 : bot; 959 : bot;
832 960
833 av_extend (av, top - bot); 961 av_extend (av, top - bot);
834 while (bot < top) 962 while (bot < top)
835 av_push (av, SvREFCNT_inc (*bot++)); 963 av_push (av, SvREFCNT_inc_NN (*bot++));
836 964
837 PL_runops = RUNOPS_DEFAULT; 965 PL_runops = RUNOPS_DEFAULT;
838 ENTER; 966 ENTER;
839 SAVETMPS; 967 SAVETMPS;
840 EXTEND (SP, 3); 968 EXTEND (SP, 3);
… …
878 SAVETMPS; 1006 SAVETMPS;
879 EXTEND (SP, 3); 1007 EXTEND (SP, 3);
880 PUSHMARK (SP); 1008 PUSHMARK (SP);
881 PUSHs (&PL_sv_yes); 1009 PUSHs (&PL_sv_yes);
882 PUSHs (fullname); 1010 PUSHs (fullname);
883 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
884 PUTBACK; 1012 PUTBACK;
885 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
886 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
887 SPAGAIN; 1015 SPAGAIN;
888 FREETMPS; 1016 FREETMPS;
… …
920 1048
921 TAINT_NOT; 1049 TAINT_NOT;
922 return 0; 1050 return 0;
923} 1051}
924 1052
1053static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1055{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0;
1058}
1059
925/* inject a fake call to Coro::State::_cctx_init into the execution */ 1060/* inject a fake call to Coro::State::_cctx_init into the execution */
926/* _cctx_init should be careful, as it could be called at almost any time */ 1061/* _cctx_init should be careful, as it could be called at almost any time */
927/* during execution of a perl program */ 1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
928static void NOINLINE 1064static void NOINLINE
929cctx_prepare (pTHX_ coro_cctx *cctx) 1065cctx_prepare (pTHX_ coro_cctx *cctx)
930{ 1066{
931 dSP; 1067 dSP;
932 LOGOP myop; 1068 UNOP myop;
933 1069
934 PL_top_env = &PL_start_env; 1070 PL_top_env = &PL_start_env;
935 1071
936 if (cctx->flags & CC_TRACE) 1072 if (cctx->flags & CC_TRACE)
937 PL_runops = runops_trace; 1073 PL_runops = runops_trace;
938 1074
939 Zero (&myop, 1, LOGOP); 1075 Zero (&myop, 1, UNOP);
940 myop.op_next = PL_op; 1076 myop.op_next = PL_op;
941 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
942 1078
943 PUSHMARK (SP); 1079 PUSHMARK (SP);
944 EXTEND (SP, 2); 1080 EXTEND (SP, 2);
945 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1081 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
946 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
947 PUTBACK; 1083 PUTBACK;
948 PL_op = (OP *)&myop; 1084 PL_op = (OP *)&myop;
949 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
950 SPAGAIN; 1086 SPAGAIN;
951} 1087}
952 1088
1089/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void
1091transfer_tail (pTHX)
1092{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108}
1109
953/* 1110/*
954 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
955 */ 1112 */
956static void 1113static void
957cctx_run (void *arg) 1114cctx_run (void *arg)
958{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
959 dTHX; 1122 dTHX;
960 1123
961 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
962 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
963
964 /* we now skip the entersub that lead to transfer() */
965 PL_op = PL_op->op_next; 1126 /* PL_nop = PL_nop->op_next */
966 1127
967 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
968 cctx_prepare (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
969 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX);
1134
970 /* somebody or something will hit me for both perl_run and PL_restartop */ 1135 /* somebody or something will hit me for both perl_run and PL_restartop */
971 PL_restartop = PL_op; 1136 PL_restartop = PL_op;
972 perl_run (PL_curinterp); 1137 perl_run (PL_curinterp);
973 1138
974 /* 1139 /*
975 * If perl-run returns we assume exit() was being called or the coro 1140 * If perl-run returns we assume exit() was being called or the coro
976 * fell off the end, which seems to be the only valid (non-bug) 1141 * fell off the end, which seems to be the only valid (non-bug)
977 * reason for perl_run to return. We try to exit by jumping to the 1142 * reason for perl_run to return. We try to exit by jumping to the
978 * bootstrap-time "top" top_env, as we cannot restore the "main" 1143 * bootstrap-time "top" top_env, as we cannot restore the "main"
979 * coroutine as Coro has no such concept 1144 * coroutine as Coro has no such concept
980 */ 1145 */
981 PL_top_env = main_top_env; 1146 PL_top_env = main_top_env;
982 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 }
983} 1149}
984 1150
985static coro_cctx * 1151static coro_cctx *
986cctx_new () 1152cctx_new ()
987{ 1153{
988 coro_cctx *cctx; 1154 coro_cctx *cctx;
1155
1156 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx);
1158
1159 cctx->gen = cctx_gen;
1160 cctx->flags = 0;
1161 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1162
1163 return cctx;
1164}
1165
1166/* create a new cctx only suitable as source */
1167static coro_cctx *
1168cctx_new_empty ()
1169{
1170 coro_cctx *cctx = cctx_new ();
1171
1172 cctx->sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0);
1174
1175 return cctx;
1176}
1177
1178/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx *
1180cctx_new_run ()
1181{
1182 coro_cctx *cctx = cctx_new ();
989 void *stack_start; 1183 void *stack_start;
990 size_t stack_size; 1184 size_t stack_size;
991 1185
992 ++cctx_count;
993
994 Newz (0, cctx, 1, coro_cctx);
995
996#if HAVE_MMAP 1186#if HAVE_MMAP
997 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
998 /* mmap supposedly does allocate-on-write for us */ 1188 /* mmap supposedly does allocate-on-write for us */
999 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1189 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1000 1190
1001 if (cctx->sptr != (void *)-1) 1191 if (cctx->sptr != (void *)-1)
1002 { 1192 {
1003# if CORO_STACKGUARD 1193 #if CORO_STACKGUARD
1004 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1005# endif 1195 #endif
1006 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1007 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1008 cctx->flags |= CC_MAPPED; 1198 cctx->flags |= CC_MAPPED;
1009 } 1199 }
1010 else 1200 else
1011#endif 1201#endif
1012 { 1202 {
1013 cctx->ssize = coro_stacksize * (long)sizeof (long); 1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1014 New (0, cctx->sptr, coro_stacksize, long); 1204 New (0, cctx->sptr, cctx_stacksize, long);
1015 1205
1016 if (!cctx->sptr) 1206 if (!cctx->sptr)
1017 { 1207 {
1018 perror ("FATAL: unable to allocate stack for coroutine"); 1208 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1019 _exit (EXIT_FAILURE); 1209 _exit (EXIT_FAILURE);
1020 } 1210 }
1021 1211
1022 stack_start = cctx->sptr; 1212 stack_start = cctx->sptr;
1023 stack_size = cctx->ssize; 1213 stack_size = cctx->ssize;
1024 } 1214 }
1025 1215
1026 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1216 #if CORO_USE_VALGRIND
1217 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1218 #endif
1219
1027 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1220 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1028 1221
1029 return cctx; 1222 return cctx;
1030} 1223}
1031 1224
… …
1034{ 1227{
1035 if (!cctx) 1228 if (!cctx)
1036 return; 1229 return;
1037 1230
1038 --cctx_count; 1231 --cctx_count;
1232 coro_destroy (&cctx->cctx);
1039 1233
1234 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr)
1236 {
1040#if CORO_USE_VALGRIND 1237 #if CORO_USE_VALGRIND
1041 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1042#endif 1239 #endif
1043 1240
1044#if HAVE_MMAP 1241#if HAVE_MMAP
1045 if (cctx->flags & CC_MAPPED) 1242 if (cctx->flags & CC_MAPPED)
1046 munmap (cctx->sptr, cctx->ssize); 1243 munmap (cctx->sptr, cctx->ssize);
1047 else 1244 else
1048#endif 1245#endif
1049 Safefree (cctx->sptr); 1246 Safefree (cctx->sptr);
1247 }
1050 1248
1051 Safefree (cctx); 1249 Safefree (cctx);
1052} 1250}
1053 1251
1054/* wether this cctx should be destructed */ 1252/* wether this cctx should be destructed */
1055#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1253#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1056 1254
1057static coro_cctx * 1255static coro_cctx *
1058cctx_get (pTHX) 1256cctx_get (pTHX)
1059{ 1257{
1060 while (expect_true (cctx_first)) 1258 while (expect_true (cctx_first))
… …
1067 return cctx; 1265 return cctx;
1068 1266
1069 cctx_destroy (cctx); 1267 cctx_destroy (cctx);
1070 } 1268 }
1071 1269
1072 return cctx_new (); 1270 return cctx_new_run ();
1073} 1271}
1074 1272
1075static void 1273static void
1076cctx_put (coro_cctx *cctx) 1274cctx_put (coro_cctx *cctx)
1077{ 1275{
1276 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1277
1078 /* free another cctx if overlimit */ 1278 /* free another cctx if overlimit */
1079 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1279 if (expect_false (cctx_idle >= cctx_max_idle))
1080 { 1280 {
1081 coro_cctx *first = cctx_first; 1281 coro_cctx *first = cctx_first;
1082 cctx_first = first->next; 1282 cctx_first = first->next;
1083 --cctx_idle; 1283 --cctx_idle;
1084 1284
… …
1096transfer_check (pTHX_ struct coro *prev, struct coro *next) 1296transfer_check (pTHX_ struct coro *prev, struct coro *next)
1097{ 1297{
1098 if (expect_true (prev != next)) 1298 if (expect_true (prev != next))
1099 { 1299 {
1100 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1101 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1102 1302
1103 if (expect_false (next->flags & CF_RUNNING)) 1303 if (expect_false (next->flags & CF_RUNNING))
1104 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1105 1305
1106 if (expect_false (next->flags & CF_DESTROYED)) 1306 if (expect_false (next->flags & CF_DESTROYED))
1107 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1307 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1108 1308
1109 if (
1110#if PERL_VERSION_ATLEAST (5,9,0) 1309#if !PERL_VERSION_ATLEAST (5,10,0)
1111 expect_false (PL_parser)
1112#else
1113 expect_false (PL_lex_state != LEX_NOTPARSING) 1310 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1114#endif
1115 )
1116 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1311 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif
1117 } 1313 }
1118} 1314}
1119 1315
1120/* always use the TRANSFER macro */ 1316/* always use the TRANSFER macro */
1121static void NOINLINE 1317static void NOINLINE
1122transfer (pTHX_ struct coro *prev, struct coro *next) 1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1123{ 1319{
1124 dSTACKLEVEL; 1320 dSTACKLEVEL;
1125 1321
1126 /* sometimes transfer is only called to set idle_sp */ 1322 /* sometimes transfer is only called to set idle_sp */
1127 if (expect_false (!next)) 1323 if (expect_false (!next))
1128 { 1324 {
1129 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1130 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1131 } 1327 }
1132 else if (expect_true (prev != next)) 1328 else if (expect_true (prev != next))
1133 { 1329 {
1134 coro_cctx *prev__cctx; 1330 coro_cctx *prev__cctx;
1135 1331
1136 if (expect_false (prev->flags & CF_NEW)) 1332 if (expect_false (prev->flags & CF_NEW))
1137 { 1333 {
1138 /* create a new empty context */ 1334 /* create a new empty/source context */
1139 Newz (0, prev->cctx, 1, coro_cctx); 1335 prev->cctx = cctx_new_empty ();
1140 prev->flags &= ~CF_NEW; 1336 prev->flags &= ~CF_NEW;
1141 prev->flags |= CF_RUNNING; 1337 prev->flags |= CF_RUNNING;
1142 } 1338 }
1143 1339
1144 prev->flags &= ~CF_RUNNING; 1340 prev->flags &= ~CF_RUNNING;
… …
1159 else 1355 else
1160 load_perl (aTHX_ next); 1356 load_perl (aTHX_ next);
1161 1357
1162 prev__cctx = prev->cctx; 1358 prev__cctx = prev->cctx;
1163 1359
1164 /* possibly "free" the cctx */ 1360 /* possibly untie and reuse the cctx */
1165 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1361 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel
1363 && !(prev__cctx->flags & CC_TRACE)
1364 && !force_cctx
1365 ))
1166 { 1366 {
1167 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1168 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1169 1369
1170 prev->cctx = 0; 1370 prev->cctx = 0;
1171 1371
1172 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1173 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1180 1380
1181 ++next->usecount; 1381 ++next->usecount;
1182 1382
1183 if (expect_true (!next->cctx)) 1383 if (expect_true (!next->cctx))
1184 next->cctx = cctx_get (aTHX); 1384 next->cctx = cctx_get (aTHX);
1385
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387 transfer_next = next;
1185 1388
1186 if (expect_false (prev__cctx != next->cctx)) 1389 if (expect_false (prev__cctx != next->cctx))
1187 { 1390 {
1188 prev__cctx->top_env = PL_top_env; 1391 prev__cctx->top_env = PL_top_env;
1189 PL_top_env = next->cctx->top_env; 1392 PL_top_env = next->cctx->top_env;
1190 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1191 } 1394 }
1192 1395
1193 free_coro_mortal (aTHX); 1396 transfer_tail (aTHX);
1194 UNLOCK;
1195
1196 if (expect_false (prev->throw || next->throw))
1197 {
1198 struct coro *coro = SvSTATE (coro_current);
1199
1200 if (coro->throw)
1201 {
1202 SV *exception = coro->throw;
1203 coro->throw = 0;
1204 sv_setsv (ERRSV, exception);
1205 croak (0);
1206 }
1207 }
1208 } 1397 }
1209} 1398}
1210 1399
1211struct transfer_args
1212{
1213 struct coro *prev, *next;
1214};
1215
1216#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1400#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1217#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1218 1402
1219/** high level stuff ********************************************************/ 1403/** high level stuff ********************************************************/
1220 1404
1221static int 1405static int
… …
1239 1423
1240 if (coro->mainstack && coro->mainstack != main_mainstack) 1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1241 { 1425 {
1242 struct coro temp; 1426 struct coro temp;
1243 1427
1244 if (coro->flags & CF_RUNNING) 1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1245 croak ("FATAL: tried to destroy currently running coroutine");
1246 1429
1247 save_perl (aTHX_ &temp); 1430 save_perl (aTHX_ &temp);
1248 load_perl (aTHX_ coro); 1431 load_perl (aTHX_ coro);
1249 1432
1250 coro_destroy (aTHX_ coro); 1433 coro_destruct (aTHX_ coro);
1251 1434
1252 load_perl (aTHX_ &temp); 1435 load_perl (aTHX_ &temp);
1253 1436
1254 coro->slot = 0; 1437 coro->slot = 0;
1255 } 1438 }
… …
1301# define MGf_DUP 0 1484# define MGf_DUP 0
1302#endif 1485#endif
1303}; 1486};
1304 1487
1305static void 1488static void
1306prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1489prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1307{ 1490{
1308 ta->prev = SvSTATE (prev_sv); 1491 ta->prev = SvSTATE (prev_sv);
1309 ta->next = SvSTATE (next_sv); 1492 ta->next = SvSTATE (next_sv);
1310 TRANSFER_CHECK (*ta); 1493 TRANSFER_CHECK (*ta);
1311} 1494}
1312 1495
1313static void 1496static void
1314api_transfer (SV *prev_sv, SV *next_sv) 1497api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1315{ 1498{
1316 dTHX;
1317 struct transfer_args ta; 1499 struct coro_transfer_args ta;
1318 1500
1319 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1320 TRANSFER (ta); 1502 TRANSFER (ta, 1);
1321} 1503}
1322 1504
1323/** Coro ********************************************************************/ 1505/** Coro ********************************************************************/
1324 1506
1325static void 1507static void
… …
1327{ 1509{
1328 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1329} 1511}
1330 1512
1331static SV * 1513static SV *
1332coro_deq (pTHX_ int min_prio) 1514coro_deq (pTHX)
1333{ 1515{
1334 int prio = PRIO_MAX - PRIO_MIN; 1516 int prio;
1335 1517
1336 min_prio -= PRIO_MIN;
1337 if (min_prio < 0)
1338 min_prio = 0;
1339
1340 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1341 if (AvFILLp (coro_ready [prio]) >= 0) 1519 if (AvFILLp (coro_ready [prio]) >= 0)
1342 return av_shift (coro_ready [prio]); 1520 return av_shift (coro_ready [prio]);
1343 1521
1344 return 0; 1522 return 0;
1345} 1523}
1346 1524
1347static int 1525static int
1348api_ready (SV *coro_sv) 1526api_ready (pTHX_ SV *coro_sv)
1349{ 1527{
1350 dTHX;
1351 struct coro *coro; 1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1352 1531
1353 if (SvROK (coro_sv)) 1532 if (SvROK (coro_sv))
1354 coro_sv = SvRV (coro_sv); 1533 coro_sv = SvRV (coro_sv);
1355 1534
1356 coro = SvSTATE (coro_sv); 1535 coro = SvSTATE (coro_sv);
… …
1359 return 0; 1538 return 0;
1360 1539
1361 coro->flags |= CF_READY; 1540 coro->flags |= CF_READY;
1362 1541
1363 LOCK; 1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546
1364 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1365 ++coro_nready; 1548 ++coro_nready;
1549
1366 UNLOCK; 1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1367 1570
1368 return 1; 1571 return 1;
1369} 1572}
1370 1573
1371static int 1574static int
1372api_is_ready (SV *coro_sv) 1575api_is_ready (pTHX_ SV *coro_sv)
1373{ 1576{
1374 dTHX;
1375 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1577 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1376} 1578}
1377 1579
1378static void 1580INLINE void
1379prepare_schedule (pTHX_ struct transfer_args *ta) 1581prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1380{ 1582{
1381 SV *prev_sv, *next_sv; 1583 SV *prev_sv, *next_sv;
1382 1584
1383 for (;;) 1585 for (;;)
1384 { 1586 {
1385 LOCK; 1587 LOCK;
1386 next_sv = coro_deq (aTHX_ PRIO_MIN); 1588 next_sv = coro_deq (aTHX);
1387 1589
1388 /* nothing to schedule: call the idle handler */ 1590 /* nothing to schedule: call the idle handler */
1389 if (expect_false (!next_sv)) 1591 if (expect_false (!next_sv))
1390 { 1592 {
1391 dSP; 1593 dSP;
… …
1395 SAVETMPS; 1597 SAVETMPS;
1396 1598
1397 PUSHMARK (SP); 1599 PUSHMARK (SP);
1398 PUTBACK; 1600 PUTBACK;
1399 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1400 1603
1401 FREETMPS; 1604 FREETMPS;
1402 LEAVE; 1605 LEAVE;
1403 continue; 1606 continue;
1404 } 1607 }
… …
1408 /* cannot transfer to destroyed coros, skip and look for next */ 1611 /* cannot transfer to destroyed coros, skip and look for next */
1409 if (expect_false (ta->next->flags & CF_DESTROYED)) 1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1410 { 1613 {
1411 UNLOCK; 1614 UNLOCK;
1412 SvREFCNT_dec (next_sv); 1615 SvREFCNT_dec (next_sv);
1413 /* coro_nready is already taken care of by destroy */ 1616 /* coro_nready has already been taken care of by destroy */
1414 continue; 1617 continue;
1415 } 1618 }
1416 1619
1417 --coro_nready; 1620 --coro_nready;
1418 UNLOCK; 1621 UNLOCK;
… …
1421 1624
1422 /* free this only after the transfer */ 1625 /* free this only after the transfer */
1423 prev_sv = SvRV (coro_current); 1626 prev_sv = SvRV (coro_current);
1424 ta->prev = SvSTATE (prev_sv); 1627 ta->prev = SvSTATE (prev_sv);
1425 TRANSFER_CHECK (*ta); 1628 TRANSFER_CHECK (*ta);
1426 assert (ta->next->flags & CF_READY); 1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1427 ta->next->flags &= ~CF_READY; 1630 ta->next->flags &= ~CF_READY;
1428 SvRV_set (coro_current, next_sv); 1631 SvRV_set (coro_current, next_sv);
1429 1632
1430 LOCK; 1633 LOCK;
1431 free_coro_mortal (aTHX); 1634 free_coro_mortal (aTHX);
1432 coro_mortal = prev_sv; 1635 coro_mortal = prev_sv;
1433 UNLOCK; 1636 UNLOCK;
1434} 1637}
1435 1638
1436static void 1639INLINE void
1437prepare_cede (pTHX_ struct transfer_args *ta) 1640prepare_cede (pTHX_ struct coro_transfer_args *ta)
1438{ 1641{
1439 api_ready (coro_current); 1642 api_ready (aTHX_ coro_current);
1440 prepare_schedule (aTHX_ ta); 1643 prepare_schedule (aTHX_ ta);
1441} 1644}
1442 1645
1646INLINE void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{
1649 SV *prev = SvRV (coro_current);
1650
1651 if (coro_nready)
1652 {
1653 prepare_schedule (aTHX_ ta);
1654 api_ready (aTHX_ prev);
1655 }
1656 else
1657 prepare_nop (aTHX_ ta);
1658}
1659
1660static void
1661api_schedule (pTHX)
1662{
1663 struct coro_transfer_args ta;
1664
1665 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1);
1667}
1668
1443static int 1669static int
1444prepare_cede_notself (pTHX_ struct transfer_args *ta) 1670api_cede (pTHX)
1445{ 1671{
1446 if (coro_nready) 1672 struct coro_transfer_args ta;
1447 { 1673
1448 SV *prev = SvRV (coro_current);
1449 prepare_schedule (aTHX_ ta); 1674 prepare_cede (aTHX_ &ta);
1450 api_ready (prev); 1675
1676 if (expect_true (ta.prev != ta.next))
1677 {
1678 TRANSFER (ta, 1);
1451 return 1; 1679 return 1;
1452 } 1680 }
1453 else 1681 else
1454 return 0; 1682 return 0;
1455} 1683}
1456 1684
1457static void
1458api_schedule (void)
1459{
1460 dTHX;
1461 struct transfer_args ta;
1462
1463 prepare_schedule (aTHX_ &ta);
1464 TRANSFER (ta);
1465}
1466
1467static int 1685static int
1468api_cede (void) 1686api_cede_notself (pTHX)
1469{ 1687{
1470 dTHX; 1688 if (coro_nready)
1689 {
1471 struct transfer_args ta; 1690 struct coro_transfer_args ta;
1472 1691
1473 prepare_cede (aTHX_ &ta); 1692 prepare_cede_notself (aTHX_ &ta);
1474
1475 if (expect_true (ta.prev != ta.next))
1476 {
1477 TRANSFER (ta); 1693 TRANSFER (ta, 1);
1478 return 1; 1694 return 1;
1479 } 1695 }
1480 else 1696 else
1481 return 0; 1697 return 0;
1482} 1698}
1483 1699
1484static int 1700static void
1485api_cede_notself (void)
1486{
1487 dTHX;
1488 struct transfer_args ta;
1489
1490 if (prepare_cede_notself (aTHX_ &ta))
1491 {
1492 TRANSFER (ta);
1493 return 1;
1494 }
1495 else
1496 return 0;
1497}
1498
1499static void
1500api_trace (SV *coro_sv, int flags) 1701api_trace (pTHX_ SV *coro_sv, int flags)
1501{ 1702{
1502 dTHX;
1503 struct coro *coro = SvSTATE (coro_sv); 1703 struct coro *coro = SvSTATE (coro_sv);
1504 1704
1505 if (flags & CC_TRACE) 1705 if (flags & CC_TRACE)
1506 { 1706 {
1507 if (!coro->cctx) 1707 if (!coro->cctx)
1508 coro->cctx = cctx_new (); 1708 coro->cctx = cctx_new_run ();
1509 else if (!(coro->cctx->flags & CC_TRACE)) 1709 else if (!(coro->cctx->flags & CC_TRACE))
1510 croak ("cannot enable tracing on coroutine with custom stack"); 1710 croak ("cannot enable tracing on coroutine with custom stack,");
1511 1711
1512 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1513 } 1713 }
1514 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1515 { 1715 {
… …
1520 else 1720 else
1521 coro->slot->runops = RUNOPS_DEFAULT; 1721 coro->slot->runops = RUNOPS_DEFAULT;
1522 } 1722 }
1523} 1723}
1524 1724
1725/*****************************************************************************/
1726/* PerlIO::cede */
1727
1728typedef struct
1729{
1730 PerlIOBuf base;
1731 NV next, every;
1732} PerlIOCede;
1733
1734static IV
1735PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1736{
1737 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1738
1739 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1740 self->next = nvtime () + self->every;
1741
1742 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1743}
1744
1745static SV *
1746PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1747{
1748 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1749
1750 return newSVnv (self->every);
1751}
1752
1753static IV
1754PerlIOCede_flush (pTHX_ PerlIO *f)
1755{
1756 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757 double now = nvtime ();
1758
1759 if (now >= self->next)
1760 {
1761 api_cede (aTHX);
1762 self->next = now + self->every;
1763 }
1764
1765 return PerlIOBuf_flush (aTHX_ f);
1766}
1767
1768static PerlIO_funcs PerlIO_cede =
1769{
1770 sizeof(PerlIO_funcs),
1771 "cede",
1772 sizeof(PerlIOCede),
1773 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1774 PerlIOCede_pushed,
1775 PerlIOBuf_popped,
1776 PerlIOBuf_open,
1777 PerlIOBase_binmode,
1778 PerlIOCede_getarg,
1779 PerlIOBase_fileno,
1780 PerlIOBuf_dup,
1781 PerlIOBuf_read,
1782 PerlIOBuf_unread,
1783 PerlIOBuf_write,
1784 PerlIOBuf_seek,
1785 PerlIOBuf_tell,
1786 PerlIOBuf_close,
1787 PerlIOCede_flush,
1788 PerlIOBuf_fill,
1789 PerlIOBase_eof,
1790 PerlIOBase_error,
1791 PerlIOBase_clearerr,
1792 PerlIOBase_setlinebuf,
1793 PerlIOBuf_get_base,
1794 PerlIOBuf_bufsiz,
1795 PerlIOBuf_get_ptr,
1796 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt,
1798};
1799
1800/*****************************************************************************/
1801
1802static const CV *slf_cv; /* for quick consistency check */
1803
1804static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1805static SV *slf_arg0;
1806static SV *slf_arg1;
1807static SV *slf_arg2;
1808
1809/* this restores the stack in the case we patched the entersub, to */
1810/* recreate the stack frame as perl will on following calls */
1811/* since entersub cleared the stack */
1812static OP *
1813pp_restore (pTHX)
1814{
1815 dSP;
1816
1817 PUSHMARK (SP);
1818
1819 EXTEND (SP, 3);
1820 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1821 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1822 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1823 PUSHs ((SV *)CvGV (slf_cv));
1824
1825 RETURNOP (slf_restore.op_first);
1826}
1827
1828static void
1829slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1830{
1831 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1832}
1833
1834static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1836{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1838
1839 frame->prepare = slf_prepare_set_stacklevel;
1840 frame->check = slf_check_nop;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843
1844static void
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1846{
1847 SV **arg = (SV **)slf_frame.data;
1848
1849 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1850}
1851
1852static void
1853slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1854{
1855 if (items != 2)
1856 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1857
1858 frame->prepare = slf_prepare_transfer;
1859 frame->check = slf_check_nop;
1860 frame->data = (void *)arg; /* let's hope it will stay valid */
1861}
1862
1863static void
1864slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1865{
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_nop;
1868}
1869
1870static void
1871slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 frame->prepare = prepare_cede;
1874 frame->check = slf_check_nop;
1875}
1876
1877static void
1878slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1879{
1880 frame->prepare = prepare_cede_notself;
1881 frame->check = slf_check_nop;
1882}
1883
1884/* we hijack an hopefully unused CV flag for our purposes */
1885#define CVf_SLF 0x4000
1886
1887/*
1888 * these not obviously related functions are all rolled into one
1889 * function to increase chances that they all will call transfer with the same
1890 * stack offset
1891 * SLF stands for "schedule-like-function".
1892 */
1893static OP *
1894pp_slf (pTHX)
1895{
1896 I32 checkmark; /* mark SP to see how many elements check has pushed */
1897
1898 /* set up the slf frame, unless it has already been set-up */
1899 /* the latter happens when a new coro has been started */
1900 /* or when a new cctx was attached to an existing coroutine */
1901 if (expect_true (!slf_frame.prepare))
1902 {
1903 /* first iteration */
1904 dSP;
1905 SV **arg = PL_stack_base + TOPMARK + 1;
1906 int items = SP - arg; /* args without function object */
1907 SV *gv = *sp;
1908
1909 /* do a quick consistency check on the "function" object, and if it isn't */
1910 /* for us, divert to the real entersub */
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1912 return PL_ppaddr[OP_ENTERSUB](aTHX);
1913
1914 /* pop args */
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 {
1919 /* ampersand-form of call, use @_ instead of stack */
1920 AV *av = GvAV (PL_defgv);
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 }
1924
1925 PUTBACK;
1926
1927 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1928 }
1929
1930 /* now interpret the slf_frame */
1931 /* we use a callback system not to make the code needlessly */
1932 /* complicated, but so we can run multiple perl coros from one cctx */
1933
1934 do
1935 {
1936 struct coro_transfer_args ta;
1937
1938 slf_frame.prepare (aTHX_ &ta);
1939 TRANSFER (ta, 0);
1940
1941 checkmark = PL_stack_sp - PL_stack_base;
1942 }
1943 while (slf_frame.check (aTHX_ &slf_frame));
1944
1945 {
1946 dSP;
1947 SV **bot = PL_stack_base + checkmark;
1948 int gimme = GIMME_V;
1949
1950 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1951
1952 /* make sure we put something on the stack in scalar context */
1953 if (gimme == G_SCALAR)
1954 {
1955 if (sp == bot)
1956 XPUSHs (&PL_sv_undef);
1957
1958 SP = bot + 1;
1959 }
1960
1961 PUTBACK;
1962 }
1963
1964 return NORMAL;
1965}
1966
1967static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1969{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1971
1972 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1973 && PL_op->op_ppaddr != pp_slf)
1974 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1975
1976 if (items > 3)
1977 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_NULL;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1992 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1993 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1994
1995 PL_op->op_ppaddr = pp_slf;
1996
1997 PL_op = (OP *)&slf_restore;
1998}
1999
2000/*****************************************************************************/
2001
2002static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2004{
2005 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0];
2007
2008 if (SvIVX (count_sv) > 0)
2009 {
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2011 return 0;
2012 }
2013 else
2014 {
2015 int i;
2016 /* if we were woken up but can't down, we look through the whole */
2017 /* waiters list and only add us if we aren't in there already */
2018 /* this avoids some degenerate memory usage cases */
2019
2020 for (i = 1; i <= AvFILLp (av); ++i)
2021 if (AvARRAY (av)[i] == SvRV (coro_current))
2022 return 1;
2023
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2025 return 1;
2026 }
2027}
2028
2029static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items)
2031{
2032 AV *av = (AV *)SvRV (arg [0]);
2033
2034 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 {
2036 frame->data = (void *)av;
2037 frame->prepare = prepare_nop;
2038 }
2039 else
2040 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule;
2045 }
2046
2047 frame->check = slf_check_semaphore_down;
2048
2049}
2050
2051/*****************************************************************************/
2052
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2054
2055/* create a closure from XS, returns a code reference */
2056/* the arg can be accessed via GENSUB_ARG from the callback */
2057/* the callback must use dXSARGS/XSRETURN */
2058static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2060{
2061 CV *cv = (CV *)NEWSV (0, 0);
2062
2063 sv_upgrade ((SV *)cv, SVt_PVCV);
2064
2065 CvANON_on (cv);
2066 CvISXSUB_on (cv);
2067 CvXSUB (cv) = xsub;
2068 GENSUB_ARG = arg;
2069
2070 return newRV_noinc ((SV *)cv);
2071}
2072
2073/*****************************************************************************/
2074
1525MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1526 2076
1527PROTOTYPES: DISABLE 2077PROTOTYPES: DISABLE
1528 2078
1529BOOT: 2079BOOT:
1530{ 2080{
1531#ifdef USE_ITHREADS 2081#ifdef USE_ITHREADS
1532 MUTEX_INIT (&coro_mutex); 2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT;
2085# endif
1533#endif 2086#endif
1534 BOOT_PAGESIZE; 2087 BOOT_PAGESIZE;
1535 2088
1536 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1537 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1538#if 0 2091
1539 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1540 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2093 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1541#endif 2094 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2095
1542 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2096 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1543 rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2097 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1544 rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2098 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1545 2099
1546 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2100 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1547 2101
1548 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2102 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1549 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2103 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1554 main_top_env = PL_top_env; 2108 main_top_env = PL_top_env;
1555 2109
1556 while (main_top_env->je_prev) 2110 while (main_top_env->je_prev)
1557 main_top_env = main_top_env->je_prev; 2111 main_top_env = main_top_env->je_prev;
1558 2112
1559 coroapi.ver = CORO_API_VERSION; 2113 coroapi.ver = CORO_API_VERSION;
1560 coroapi.rev = CORO_API_REVISION; 2114 coroapi.rev = CORO_API_REVISION;
2115
1561 coroapi.transfer = api_transfer; 2116 coroapi.transfer = api_transfer;
2117
2118 coroapi.sv_state = SvSTATE_;
2119 coroapi.execute_slf = api_execute_slf;
2120 coroapi.prepare_nop = prepare_nop;
2121 coroapi.prepare_schedule = prepare_schedule;
2122 coroapi.prepare_cede = prepare_cede;
2123 coroapi.prepare_cede_notself = prepare_cede_notself;
2124
2125 {
2126 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2127
2128 if (!svp) croak ("Time::HiRes is required");
2129 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2130
2131 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2132 }
1562 2133
1563 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1564} 2135}
1565 2136
1566SV * 2137SV *
… …
1590 av_push (coro->args, newSVsv (ST (i))); 2161 av_push (coro->args, newSVsv (ST (i)));
1591} 2162}
1592 OUTPUT: 2163 OUTPUT:
1593 RETVAL 2164 RETVAL
1594 2165
1595# these not obviously related functions are all rolled into the same xs
1596# function to increase chances that they all will call transfer with the same
1597# stack offset
1598void 2166void
1599_set_stacklevel (...) 2167_set_stacklevel (...)
1600 ALIAS: 2168 CODE:
1601 Coro::State::transfer = 1 2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1602 Coro::schedule = 2
1603 Coro::cede = 3
1604 Coro::cede_notself = 4
1605 CODE:
1606{
1607 struct transfer_args ta;
1608 2170
1609 switch (ix) 2171void
1610 { 2172transfer (...)
1611 case 0: 2173 PROTOTYPE: $$
1612 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2174 CODE:
1613 ta.next = 0; 2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1614 break;
1615
1616 case 1:
1617 if (items != 2)
1618 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1619
1620 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1621 break;
1622
1623 case 2:
1624 prepare_schedule (aTHX_ &ta);
1625 break;
1626
1627 case 3:
1628 prepare_cede (aTHX_ &ta);
1629 break;
1630
1631 case 4:
1632 if (!prepare_cede_notself (aTHX_ &ta))
1633 XSRETURN_EMPTY;
1634
1635 break;
1636 }
1637
1638 BARRIER;
1639 PUTBACK;
1640 TRANSFER (ta);
1641 SPAGAIN; /* might be the sp of a different coroutine now */
1642 /* be extra careful not to ever do anything after TRANSFER */
1643}
1644 2176
1645bool 2177bool
1646_destroy (SV *coro_sv) 2178_destroy (SV *coro_sv)
1647 CODE: 2179 CODE:
1648 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1649 OUTPUT: 2181 OUTPUT:
1650 RETVAL 2182 RETVAL
1651 2183
1652void 2184void
1653_exit (code) 2185_exit (int code)
1654 int code
1655 PROTOTYPE: $ 2186 PROTOTYPE: $
1656 CODE: 2187 CODE:
1657 _exit (code); 2188 _exit (code);
1658 2189
1659int 2190int
1660cctx_stacksize (int new_stacksize = 0) 2191cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$
1661 CODE: 2193 CODE:
1662 RETVAL = coro_stacksize; 2194 RETVAL = cctx_stacksize;
1663 if (new_stacksize) 2195 if (new_stacksize)
2196 {
1664 coro_stacksize = new_stacksize; 2197 cctx_stacksize = new_stacksize;
2198 ++cctx_gen;
2199 }
1665 OUTPUT: 2200 OUTPUT:
1666 RETVAL 2201 RETVAL
1667 2202
1668int 2203int
2204cctx_max_idle (int max_idle = 0)
2205 PROTOTYPE: ;$
2206 CODE:
2207 RETVAL = cctx_max_idle;
2208 if (max_idle > 1)
2209 cctx_max_idle = max_idle;
2210 OUTPUT:
2211 RETVAL
2212
2213int
1669cctx_count () 2214cctx_count ()
2215 PROTOTYPE:
1670 CODE: 2216 CODE:
1671 RETVAL = cctx_count; 2217 RETVAL = cctx_count;
1672 OUTPUT: 2218 OUTPUT:
1673 RETVAL 2219 RETVAL
1674 2220
1675int 2221int
1676cctx_idle () 2222cctx_idle ()
2223 PROTOTYPE:
1677 CODE: 2224 CODE:
1678 RETVAL = cctx_idle; 2225 RETVAL = cctx_idle;
1679 OUTPUT: 2226 OUTPUT:
1680 RETVAL 2227 RETVAL
1681 2228
1682void 2229void
1683list () 2230list ()
2231 PROTOTYPE:
1684 PPCODE: 2232 PPCODE:
1685{ 2233{
1686 struct coro *coro; 2234 struct coro *coro;
1687 for (coro = coro_first; coro; coro = coro->next) 2235 for (coro = coro_first; coro; coro = coro->next)
1688 if (coro->hv) 2236 if (coro->hv)
… …
1693call (Coro::State coro, SV *coderef) 2241call (Coro::State coro, SV *coderef)
1694 ALIAS: 2242 ALIAS:
1695 eval = 1 2243 eval = 1
1696 CODE: 2244 CODE:
1697{ 2245{
1698 if (coro->mainstack) 2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1699 { 2247 {
1700 struct coro temp; 2248 struct coro temp;
1701 2249
1702 if (!(coro->flags & CF_RUNNING)) 2250 if (!(coro->flags & CF_RUNNING))
1703 { 2251 {
2252 PUTBACK;
1704 save_perl (aTHX_ &temp); 2253 save_perl (aTHX_ &temp);
1705 load_perl (aTHX_ coro); 2254 load_perl (aTHX_ coro);
1706 } 2255 }
1707 2256
1708 { 2257 {
… …
1727 2276
1728 if (!(coro->flags & CF_RUNNING)) 2277 if (!(coro->flags & CF_RUNNING))
1729 { 2278 {
1730 save_perl (aTHX_ coro); 2279 save_perl (aTHX_ coro);
1731 load_perl (aTHX_ &temp); 2280 load_perl (aTHX_ &temp);
2281 SPAGAIN;
1732 } 2282 }
1733 } 2283 }
1734} 2284}
1735 2285
1736SV * 2286SV *
… …
1745 RETVAL = boolSV (coro->flags & ix); 2295 RETVAL = boolSV (coro->flags & ix);
1746 OUTPUT: 2296 OUTPUT:
1747 RETVAL 2297 RETVAL
1748 2298
1749void 2299void
2300throw (Coro::State self, SV *throw = &PL_sv_undef)
2301 PROTOTYPE: $;$
2302 CODE:
2303 SvREFCNT_dec (self->throw);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2305
2306void
1750api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags
1751 2310
1752SV * 2311SV *
1753has_stack (Coro::State coro) 2312has_cctx (Coro::State coro)
1754 PROTOTYPE: $ 2313 PROTOTYPE: $
1755 CODE: 2314 CODE:
1756 RETVAL = boolSV (!!coro->cctx); 2315 RETVAL = boolSV (!!coro->cctx);
1757 OUTPUT: 2316 OUTPUT:
1758 RETVAL 2317 RETVAL
… …
1763 CODE: 2322 CODE:
1764 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2323 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1765 OUTPUT: 2324 OUTPUT:
1766 RETVAL 2325 RETVAL
1767 2326
1768IV 2327UV
1769rss (Coro::State coro) 2328rss (Coro::State coro)
1770 PROTOTYPE: $ 2329 PROTOTYPE: $
1771 ALIAS: 2330 ALIAS:
1772 usecount = 1 2331 usecount = 1
1773 CODE: 2332 CODE:
… …
1777 case 1: RETVAL = coro->usecount; break; 2336 case 1: RETVAL = coro->usecount; break;
1778 } 2337 }
1779 OUTPUT: 2338 OUTPUT:
1780 RETVAL 2339 RETVAL
1781 2340
2341void
2342force_cctx ()
2343 PROTOTYPE:
2344 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0;
2347
2348void
2349swap_defsv (Coro::State self)
2350 PROTOTYPE: $
2351 ALIAS:
2352 swap_defav = 1
2353 CODE:
2354 if (!self->slot)
2355 croak ("cannot swap state with coroutine that has no saved state,");
2356 else
2357 {
2358 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360
2361 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 }
1782 2363
1783MODULE = Coro::State PACKAGE = Coro 2364MODULE = Coro::State PACKAGE = Coro
1784 2365
1785BOOT: 2366BOOT:
1786{ 2367{
1787 int i; 2368 int i;
1788 2369
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1789 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1790 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1791 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1792 2373
1793 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1794 SvREADONLY_on (coro_current); 2375 SvREADONLY_on (coro_current);
1795 2376
1796 coro_stash = gv_stashpv ("Coro", TRUE); 2377 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1804 2385
1805 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2386 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1806 coro_ready[i] = newAV (); 2387 coro_ready[i] = newAV ();
1807 2388
1808 { 2389 {
1809 SV *sv = perl_get_sv ("Coro::API", TRUE); 2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1810 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1811 2391
1812 coroapi.schedule = api_schedule; 2392 coroapi.schedule = api_schedule;
1813 coroapi.cede = api_cede; 2393 coroapi.cede = api_cede;
1814 coroapi.cede_notself = api_cede_notself; 2394 coroapi.cede_notself = api_cede_notself;
1815 coroapi.ready = api_ready; 2395 coroapi.ready = api_ready;
1816 coroapi.is_ready = api_is_ready; 2396 coroapi.is_ready = api_is_ready;
1817 coroapi.nready = &coro_nready; 2397 coroapi.nready = coro_nready;
1818 coroapi.current = coro_current; 2398 coroapi.current = coro_current;
1819 2399
1820 GCoroAPI = &coroapi; 2400 GCoroAPI = &coroapi;
1821 sv_setiv (sv, (IV)&coroapi); 2401 sv_setiv (sv, (IV)&coroapi);
1822 SvREADONLY_on (sv); 2402 SvREADONLY_on (sv);
1823 } 2403 }
1824} 2404}
2405
2406void
2407schedule (...)
2408 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2410
2411void
2412cede (...)
2413 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2415
2416void
2417cede_notself (...)
2418 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1825 2420
1826void 2421void
1827_set_current (SV *current) 2422_set_current (SV *current)
1828 PROTOTYPE: $ 2423 PROTOTYPE: $
1829 CODE: 2424 CODE:
1830 SvREFCNT_dec (SvRV (coro_current)); 2425 SvREFCNT_dec (SvRV (coro_current));
1831 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2426 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2427
2428void
2429_set_readyhook (SV *hook)
2430 PROTOTYPE: $
2431 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook);
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2435 UNLOCK;
1832 2436
1833int 2437int
1834prio (Coro::State coro, int newprio = 0) 2438prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$
1835 ALIAS: 2440 ALIAS:
1836 nice = 1 2441 nice = 1
1837 CODE: 2442 CODE:
1838{ 2443{
1839 RETVAL = coro->prio; 2444 RETVAL = coro->prio;
… …
1854 2459
1855SV * 2460SV *
1856ready (SV *self) 2461ready (SV *self)
1857 PROTOTYPE: $ 2462 PROTOTYPE: $
1858 CODE: 2463 CODE:
1859 RETVAL = boolSV (api_ready (self)); 2464 RETVAL = boolSV (api_ready (aTHX_ self));
1860 OUTPUT: 2465 OUTPUT:
1861 RETVAL 2466 RETVAL
1862 2467
1863int 2468int
1864nready (...) 2469nready (...)
… …
1866 CODE: 2471 CODE:
1867 RETVAL = coro_nready; 2472 RETVAL = coro_nready;
1868 OUTPUT: 2473 OUTPUT:
1869 RETVAL 2474 RETVAL
1870 2475
1871void
1872throw (Coro::State self, SV *throw = &PL_sv_undef)
1873 PROTOTYPE: $;$
1874 CODE:
1875 SvREFCNT_dec (self->throw);
1876 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1877
1878# for async_pool speedup 2476# for async_pool speedup
1879void 2477void
1880_pool_1 (SV *cb) 2478_pool_1 (SV *cb)
1881 CODE: 2479 CODE:
1882{ 2480{
… …
1886 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2484 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1887 AV *invoke_av; 2485 AV *invoke_av;
1888 int i, len; 2486 int i, len;
1889 2487
1890 if (!invoke) 2488 if (!invoke)
2489 {
2490 SV *old = PL_diehook;
2491 PL_diehook = 0;
2492 SvREFCNT_dec (old);
1891 croak ("\3async_pool terminate\2\n"); 2493 croak ("\3async_pool terminate\2\n");
2494 }
1892 2495
1893 SvREFCNT_dec (coro->saved_deffh); 2496 SvREFCNT_dec (coro->saved_deffh);
1894 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2497 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1895 2498
1896 hv_store (hv, "desc", sizeof ("desc") - 1, 2499 hv_store (hv, "desc", sizeof ("desc") - 1,
1897 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2500 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1898 2501
1899 invoke_av = (AV *)SvRV (invoke); 2502 invoke_av = (AV *)SvRV (invoke);
… …
1903 2506
1904 if (len > 0) 2507 if (len > 0)
1905 { 2508 {
1906 av_fill (defav, len - 1); 2509 av_fill (defav, len - 1);
1907 for (i = 0; i < len; ++i) 2510 for (i = 0; i < len; ++i)
1908 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2511 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1909 } 2512 }
1910
1911 SvREFCNT_dec (invoke);
1912} 2513}
1913 2514
1914void 2515void
1915_pool_2 (SV *cb) 2516_pool_2 (SV *cb)
1916 CODE: 2517 CODE:
… …
1920 sv_setsv (cb, &PL_sv_undef); 2521 sv_setsv (cb, &PL_sv_undef);
1921 2522
1922 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2523 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1923 coro->saved_deffh = 0; 2524 coro->saved_deffh = 0;
1924 2525
1925 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2526 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1926 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2527 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
1927 croak ("\3async_pool terminate\2\n"); 2532 croak ("\3async_pool terminate\2\n");
2533 }
1928 2534
1929 av_clear (GvAV (PL_defgv)); 2535 av_clear (GvAV (PL_defgv));
1930 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2536 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1931 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2537 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1932 2538
1933 coro->prio = 0; 2539 coro->prio = 0;
1934 2540
1935 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2541 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1936 api_trace (coro_current, 0); 2542 api_trace (aTHX_ coro_current, 0);
1937 2543
1938 av_push (av_async_pool, newSVsv (coro_current)); 2544 av_push (av_async_pool, newSVsv (coro_current));
1939} 2545}
1940 2546
1941 2547
1942MODULE = Coro::State PACKAGE = Coro::AIO 2548MODULE = Coro::State PACKAGE = Coro::AIO
1943 2549
1944SV * 2550void
1945_get_state () 2551_get_state (SV *self)
2552 PROTOTYPE: $
1946 CODE: 2553 PPCODE:
1947{ 2554{
1948 struct io_state *data; 2555 AV *defav = GvAV (PL_defgv);
1949 2556 AV *av = newAV ();
2557 int i;
1950 RETVAL = newSV (sizeof (struct io_state)); 2558 SV *data_sv = newSV (sizeof (struct io_state));
1951 data = (struct io_state *)SvPVX (RETVAL); 2559 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1952 SvCUR_set (RETVAL, sizeof (struct io_state)); 2560 SvCUR_set (data_sv, sizeof (struct io_state));
1953 SvPOK_only (RETVAL); 2561 SvPOK_only (data_sv);
1954 2562
1955 data->errorno = errno; 2563 data->errorno = errno;
1956 data->laststype = PL_laststype; 2564 data->laststype = PL_laststype;
1957 data->laststatval = PL_laststatval; 2565 data->laststatval = PL_laststatval;
1958 data->statcache = PL_statcache; 2566 data->statcache = PL_statcache;
2567
2568 av_extend (av, AvFILLp (defav) + 1 + 1);
2569
2570 for (i = 0; i <= AvFILLp (defav); ++i)
2571 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2572
2573 av_push (av, data_sv);
2574
2575 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2576
2577 api_ready (aTHX_ self);
1959} 2578}
1960 OUTPUT:
1961 RETVAL
1962 2579
1963void 2580void
1964_set_state (char *data_) 2581_set_state (SV *state)
1965 PROTOTYPE: $ 2582 PROTOTYPE: $
1966 CODE: 2583 PPCODE:
1967{ 2584{
1968 struct io_state *data = (void *)data_; 2585 AV *av = (AV *)SvRV (state);
2586 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2587 int i;
1969 2588
1970 errno = data->errorno; 2589 errno = data->errorno;
1971 PL_laststype = data->laststype; 2590 PL_laststype = data->laststype;
1972 PL_laststatval = data->laststatval; 2591 PL_laststatval = data->laststatval;
1973 PL_statcache = data->statcache; 2592 PL_statcache = data->statcache;
1974}
1975 2593
2594 EXTEND (SP, AvFILLp (av));
2595 for (i = 0; i < AvFILLp (av); ++i)
2596 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2597}
2598
2599
2600MODULE = Coro::State PACKAGE = Coro::AnyEvent
2601
2602BOOT:
2603 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2604
2605void
2606_schedule (...)
2607 CODE:
2608{
2609 static int incede;
2610
2611 api_cede_notself (aTHX);
2612
2613 ++incede;
2614 while (coro_nready >= incede && api_cede (aTHX))
2615 ;
2616
2617 sv_setsv (sv_activity, &PL_sv_undef);
2618 if (coro_nready >= incede)
2619 {
2620 PUSHMARK (SP);
2621 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2623 SPAGAIN;
2624 }
2625
2626 --incede;
2627}
2628
2629
2630MODULE = Coro::State PACKAGE = PerlIO::cede
2631
2632BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634
2635MODULE = Coro::State PACKAGE = Coro::Semaphore
2636
2637SV *
2638new (SV *klass, SV *count_ = 0)
2639 CODE:
2640{
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2642 AV *av = newAV ();
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2645}
2646 OUTPUT:
2647 RETVAL
2648
2649SV *
2650count (SV *self)
2651 CODE:
2652 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2653 OUTPUT:
2654 RETVAL
2655
2656void
2657up (SV *self, int adjust = 1)
2658 ALIAS:
2659 adjust = 1
2660 CODE:
2661{
2662 AV *av = (AV *)SvRV (self);
2663 SV *count_sv = AvARRAY (av)[0];
2664 IV count = SvIVX (count_sv);
2665
2666 count += ix ? adjust : 1;
2667 SvIVX (count_sv) = count;
2668
2669 /* now wake up as many waiters as possible */
2670 while (count > 0 && AvFILLp (av) >= count)
2671 {
2672 SV *cb;
2673
2674 /* swap first two elements so we can shift a waiter */
2675 AvARRAY (av)[0] = AvARRAY (av)[1];
2676 AvARRAY (av)[1] = count_sv;
2677 cb = av_shift (av);
2678
2679 if (SvOBJECT (cb))
2680 api_ready (aTHX_ cb);
2681 else
2682 croak ("callbacks not yet supported");
2683
2684 SvREFCNT_dec (cb);
2685 }
2686}
2687
2688void
2689down (SV *self)
2690 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2692
2693void
2694try (SV *self)
2695 PPCODE:
2696{
2697 AV *av = (AV *)SvRV (self);
2698 SV *count_sv = AvARRAY (av)[0];
2699 IV count = SvIVX (count_sv);
2700
2701 if (count > 0)
2702 {
2703 --count;
2704 SvIVX (count_sv) = count;
2705 XSRETURN_YES;
2706 }
2707 else
2708 XSRETURN_NO;
2709}
2710
2711void
2712waiters (SV *self)
2713 CODE:
2714{
2715 AV *av = (AV *)SvRV (self);
2716
2717 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2719 else
2720 {
2721 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1);
2723 for (i = 1; i <= AvFILLp (av); ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i]));
2725 }
2726}
2727

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines