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Comparing Coro/Coro/State.xs (file contents):
Revision 1.225 by root, Wed Mar 12 14:13:11 2008 UTC vs.
Revision 1.306 by root, Wed Nov 19 11:11:10 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 */
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
77/* 5.8.8 */ 93/* 5.8.8 */
78#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
79# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
80#endif 96#endif
81#ifndef newSV 97#ifndef newSV
82# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
83#endif 99#endif
84 100#ifndef CvISXSUB_on
85/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif 102#endif
89 103
90/* 5.8.7 */ 104/* 5.8.7 */
91#ifndef SvRV_set 105#ifndef SvRV_set
92# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
… …
105# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
106#endif 120#endif
107 121
108/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
109 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
110#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
111#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
112 131
113#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
114 133
115#if __GNUC__ >= 3 134#if __GNUC__ >= 3
116# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
117# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
119#else 138#else
120# define attribute(x) 139# define attribute(x)
121# define BARRIER
122# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
123#endif 142#endif
124 143
125#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
126#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
127 146
128#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
129 148
130#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
131 151
132#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
133static perl_mutex coro_mutex; 153# if CORO_PTHREAD
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
135# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
136#else
137# define LOCK (void)0
138# define UNLOCK (void)0
139#endif 155# endif
156#endif
140 157
141/* helper storage struct for Coro::AIO */ 158static double (*nvtime)(); /* so why doesn't it take void? */
142struct io_state
143{
144 int errorno;
145 I32 laststype;
146 int laststatval;
147 Stat_t statcache;
148};
149 159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
163
164static U32 cctx_gen;
150static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 168static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
155static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
156 171
157static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 174static SV *rv_diehook;
160static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
162 177
163/* async_pool helper stuff */ 178/* async_pool helper stuff */
164static SV *sv_pool_rss; 179static SV *sv_pool_rss;
165static SV *sv_pool_size; 180static SV *sv_pool_size;
166static AV *av_async_pool; 181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
167 185
168static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
170 188
171enum { 189enum {
… …
176 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178}; 196};
179 197
180/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
181typedef struct coro_cctx { 199typedef struct coro_cctx
200{
182 struct coro_cctx *next; 201 struct coro_cctx *next;
183 202
184 /* the stack */ 203 /* the stack */
185 void *sptr; 204 void *sptr;
186 size_t ssize; 205 size_t ssize;
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
190 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
191 JMPENV *top_env; 210 JMPENV *top_env;
192 coro_context cctx; 211 coro_context cctx;
193 212
213 U32 gen;
194#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
195 int valgrind_id; 215 int valgrind_id;
196#endif 216#endif
197 unsigned char flags; 217 unsigned char flags;
198} coro_cctx; 218} coro_cctx;
… …
203 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
204 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
205}; 225};
206 226
207/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
208typedef struct { 228typedef struct
229{
209 SV *defsv; 230 SV *defsv;
210 AV *defav; 231 AV *defav;
211 SV *errsv; 232 SV *errsv;
212 SV *irsgv; 233 SV *irsgv;
213#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
217 238
218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
219 240
220/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
221struct coro { 242struct coro {
222 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
223 coro_cctx *cctx; 244 coro_cctx *cctx;
224 245
225 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
226 AV *mainstack; 248 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
228 250
229 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
230 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
231 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
232 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
233 256
234 /* statistics */ 257 /* statistics */
235 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
236 259
237 /* coro process data */ 260 /* coro process data */
238 int prio; 261 int prio;
239 SV *throw; /* exception to be thrown */ 262 SV *except; /* exception to be thrown */
263 SV *rouse_cb;
240 264
241 /* async_pool */ 265 /* async_pool */
242 SV *saved_deffh; 266 SV *saved_deffh;
243 267
244 /* linked list */ 268 /* linked list */
245 struct coro *next, *prev; 269 struct coro *next, *prev;
246}; 270};
247 271
248typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
249typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */
250 279
251/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
252 281
253#define PRIO_MAX 3 282#define PRIO_MAX 3
254#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
257#define PRIO_IDLE -3 286#define PRIO_IDLE -3
258#define PRIO_MIN -4 287#define PRIO_MIN -4
259 288
260/* for Coro.pm */ 289/* for Coro.pm */
261static SV *coro_current; 290static SV *coro_current;
291static SV *coro_readyhook;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263static int coro_nready;
264static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
265 295
266/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
267 297
268static SV * 298static SV *
269coro_get_sv (pTHX_ const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
270{ 300{
271#if PERL_VERSION_ATLEAST (5,9,0) 301#if PERL_VERSION_ATLEAST (5,10,0)
272 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
273 get_sv (name, create); 303 get_sv (name, create);
274#endif 304#endif
275 return get_sv (name, create); 305 return get_sv (name, create);
276} 306}
277 307
278static AV * 308static AV *
279coro_get_av (pTHX_ const char *name, int create) 309coro_get_av (pTHX_ const char *name, int create)
280{ 310{
281#if PERL_VERSION_ATLEAST (5,9,0) 311#if PERL_VERSION_ATLEAST (5,10,0)
282 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
283 get_av (name, create); 313 get_av (name, create);
284#endif 314#endif
285 return get_av (name, create); 315 return get_av (name, create);
286} 316}
287 317
288static HV * 318static HV *
289coro_get_hv (pTHX_ const char *name, int create) 319coro_get_hv (pTHX_ const char *name, int create)
290{ 320{
291#if PERL_VERSION_ATLEAST (5,9,0) 321#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_hv (name, create); 323 get_hv (name, create);
294#endif 324#endif
295 return get_hv (name, create); 325 return get_hv (name, create);
296} 326}
… …
301 AV *padlist = CvPADLIST (cv); 331 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 332 AV *newpadlist, *newpad;
303 333
304 newpadlist = newAV (); 334 newpadlist = newAV ();
305 AvREAL_off (newpadlist); 335 AvREAL_off (newpadlist);
306#if PERL_VERSION_ATLEAST (5,9,0) 336#if PERL_VERSION_ATLEAST (5,10,0)
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308#else 338#else
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 340#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 342 --AvFILLp (padlist);
313 343
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315 av_store (newpadlist, 1, (SV *)newpad); 345 av_store (newpadlist, 1, (SV *)newpad);
316 346
317 return newpadlist; 347 return newpadlist;
318} 348}
319 349
… …
349 379
350 /* casting is fun. */ 380 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 382 free_padlist (aTHX_ padlist);
353 383
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385
354 return 0; 386 return 0;
355} 387}
356 388
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext 389#define CORO_MAGIC_type_cv 26
358#define CORO_MAGIC_type_state PERL_MAGIC_ext 390#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 391
360static MGVTBL coro_cv_vtbl = { 392static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 393 0, 0, 0, 0,
362 coro_cv_free 394 coro_cv_free
363}; 395};
364 396
397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
399 ? SvMAGIC (sv) \
400 : mg_find (sv, type))
401
365#define CORO_MAGIC(sv,type) \ 402#define CORO_MAGIC(sv, type) \
366 SvMAGIC (sv) \ 403 (expect_true (SvMAGIC (sv)) \
367 ? SvMAGIC (sv)->mg_type == type \ 404 ? CORO_MAGIC_NN (sv, type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \
370 : 0 405 : 0)
371 406
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 407#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
374 409
375static struct coro * 410INLINE struct coro *
376SvSTATE_ (pTHX_ SV *coro) 411SvSTATE_ (pTHX_ SV *coro)
377{ 412{
378 HV *stash; 413 HV *stash;
379 MAGIC *mg; 414 MAGIC *mg;
380 415
… …
395 mg = CORO_MAGIC_state (coro); 430 mg = CORO_MAGIC_state (coro);
396 return (struct coro *)mg->mg_ptr; 431 return (struct coro *)mg->mg_ptr;
397} 432}
398 433
399#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
400 439
401/* the next two functions merely cache the padlists */ 440/* the next two functions merely cache the padlists */
402static void 441static void
403get_padlist (pTHX_ CV *cv) 442get_padlist (pTHX_ CV *cv)
404{ 443{
… …
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 447 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 448 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 449 else
411 { 450 {
412#if CORO_PREFER_PERL_FUNCTIONS 451#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 452 /* this is probably cleaner? but also slower! */
453 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 454 CV *cp = Perl_cv_clone (aTHX_ cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 455 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 456 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 457 SvREFCNT_dec (cp);
418#else 458#else
419 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 459 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
470 CvPADLIST (cv) = (AV *)POPs; 510 CvPADLIST (cv) = (AV *)POPs;
471 } 511 }
472 512
473 PUTBACK; 513 PUTBACK;
474 } 514 }
515
516 slf_frame = c->slf_frame;
517 CORO_THROW = c->except;
475} 518}
476 519
477static void 520static void
478save_perl (pTHX_ Coro__State c) 521save_perl (pTHX_ Coro__State c)
479{ 522{
523 c->except = CORO_THROW;
524 c->slf_frame = slf_frame;
525
480 { 526 {
481 dSP; 527 dSP;
482 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
502 548
503 if (expect_true (CvDEPTH (cv))) 549 if (expect_true (CvDEPTH (cv)))
504 { 550 {
505 EXTEND (SP, 3); 551 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 552 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 554 PUSHs ((SV *)cv);
509 555
510 CvDEPTH (cv) = 0; 556 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 557 get_padlist (aTHX_ cv);
512 } 558 }
… …
551 #undef VAR 597 #undef VAR
552 } 598 }
553} 599}
554 600
555/* 601/*
556 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
560 */ 606 */
561#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
562# define coro_init_stacks init_stacks 608# define coro_init_stacks(thx) init_stacks ()
563#else 609#else
564static void 610static void
565coro_init_stacks (pTHX) 611coro_init_stacks (pTHX)
566{ 612{
567 PL_curstackinfo = new_stackinfo(32, 8); 613 PL_curstackinfo = new_stackinfo(32, 8);
… …
592 638
593 New(54,PL_savestack,24,ANY); 639 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 640 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 641 PL_savestack_max = 24;
596 642
597#if !PERL_VERSION_ATLEAST (5,9,0) 643#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 644 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 645 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 646 PL_retstack_max = 4;
601#endif 647#endif
602} 648}
… …
604 650
605/* 651/*
606 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
607 */ 653 */
608static void 654static void
609coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
610{ 656{
611 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
613 659
614 while (PL_curstackinfo) 660 while (PL_curstackinfo)
… …
625 671
626 Safefree (PL_tmps_stack); 672 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 673 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 674 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 675 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 676#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 677 Safefree (PL_retstack);
632#endif 678#endif
633} 679}
634 680
635static size_t 681static size_t
… …
651 #undef VAR 697 #undef VAR
652 } 698 }
653 else 699 else
654 slot = coro->slot; 700 slot = coro->slot;
655 701
702 if (slot)
703 {
656 rss += sizeof (slot->curstackinfo); 704 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 707 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 709 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 710 rss += slot->savestack_max * sizeof (ANY);
663 711
664#if !PERL_VERSION_ATLEAST (5,9,0) 712#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 713 rss += slot->retstack_max * sizeof (OP *);
666#endif 714#endif
715 }
667 } 716 }
668 717
669 return rss; 718 return rss;
670} 719}
671 720
672/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
673 722
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726
727/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr)
732#endif
676 733
677/* 734/*
678 * This overrides the default magic get method of %SIG elements. 735 * This overrides the default magic get method of %SIG elements.
679 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
680 * and instead of tryign to save and restore the hash elements, we just provide 737 * and instead of tryign to save and restore the hash elements, we just provide
… …
688{ 745{
689 const char *s = MgPV_nolen_const (mg); 746 const char *s = MgPV_nolen_const (mg);
690 747
691 if (*s == '_') 748 if (*s == '_')
692 { 749 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 750 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
758 return 0;
759 }
695 } 760 }
696 761
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = 0;
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698} 787}
699 788
700static int 789static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702{ 791{
… …
712 if (svp) 801 if (svp)
713 { 802 {
714 SV *old = *svp; 803 SV *old = *svp;
715 *svp = newSVsv (sv); 804 *svp = newSVsv (sv);
716 SvREFCNT_dec (old); 805 SvREFCNT_dec (old);
717 return; 806 return 0;
718 } 807 }
719 } 808 }
720 809
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722} 811}
723 812
724static void 813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
825
826static UNOP coro_setup_op;
827
828static void NOINLINE /* noinline to keep it out of the transfer fast path */
725coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
726{ 830{
727 /* 831 /*
728 * emulate part of the perl startup here. 832 * emulate part of the perl startup here.
729 */ 833 */
… …
736 PL_curpm = 0; 840 PL_curpm = 0;
737 PL_curpad = 0; 841 PL_curpad = 0;
738 PL_localizing = 0; 842 PL_localizing = 0;
739 PL_dirty = 0; 843 PL_dirty = 0;
740 PL_restartop = 0; 844 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0;
847#endif
741 848
742 /* recreate the die/warn hooks */ 849 /* recreate the die/warn hooks */
743 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
744 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745 852
746 GvSV (PL_defgv) = newSV (0); 853 GvSV (PL_defgv) = newSV (0);
747 GvAV (PL_defgv) = coro->args; coro->args = 0; 854 GvAV (PL_defgv) = coro->args; coro->args = 0;
748 GvSV (PL_errgv) = newSV (0); 855 GvSV (PL_errgv) = newSV (0);
749 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);
750 PL_rs = newSVsv (GvSV (irsgv)); 857 PL_rs = newSVsv (GvSV (irsgv));
751 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752 859
753 { 860 {
754 dSP; 861 dSP;
755 LOGOP myop; 862 UNOP myop;
756 863
757 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
758 myop.op_next = Nullop; 865 myop.op_next = Nullop;
759 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
760 867
761 PUSHMARK (SP); 868 PUSHMARK (SP);
762 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
763 PUTBACK; 870 PUTBACK;
… …
765 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
766 SPAGAIN; 873 SPAGAIN;
767 } 874 }
768 875
769 /* 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
770 * 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.
771 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
772 * so we ENTER here for symmetry
773 */ 878 */
774 ENTER; 879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
775} 880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
776 881
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM;
885 coro_setup_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */
887
888 PL_op = (OP *)&coro_setup_op;
889
890 /* copy throw, in case it was set before coro_setup */
891 CORO_THROW = coro->except;
892}
893
777static void 894static void
778coro_destroy (pTHX_ struct coro *coro) 895coro_destruct (pTHX_ struct coro *coro)
779{ 896{
780 if (!IN_DESTRUCT) 897 if (!IN_DESTRUCT)
781 { 898 {
782 /* restore all saved variables and stuff */ 899 /* restore all saved variables and stuff */
783 LEAVE_SCOPE (0); 900 LEAVE_SCOPE (0);
… …
802 SvREFCNT_dec (GvSV (irsgv)); 919 SvREFCNT_dec (GvSV (irsgv));
803 920
804 SvREFCNT_dec (PL_diehook); 921 SvREFCNT_dec (PL_diehook);
805 SvREFCNT_dec (PL_warnhook); 922 SvREFCNT_dec (PL_warnhook);
806 923
924 SvREFCNT_dec (CORO_THROW);
807 SvREFCNT_dec (coro->saved_deffh); 925 SvREFCNT_dec (coro->saved_deffh);
808 SvREFCNT_dec (coro->throw); 926 SvREFCNT_dec (coro->rouse_cb);
809 927
810 coro_destroy_stacks (aTHX); 928 coro_destruct_stacks (aTHX);
811} 929}
812 930
813static void 931INLINE void
814free_coro_mortal (pTHX) 932free_coro_mortal (pTHX)
815{ 933{
816 if (expect_true (coro_mortal)) 934 if (expect_true (coro_mortal))
817 { 935 {
818 SvREFCNT_dec (coro_mortal); 936 SvREFCNT_dec (coro_mortal);
… …
823static int 941static int
824runops_trace (pTHX) 942runops_trace (pTHX)
825{ 943{
826 COP *oldcop = 0; 944 COP *oldcop = 0;
827 int oldcxix = -2; 945 int oldcxix = -2;
828 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
829 coro_cctx *cctx = coro->cctx; 947 coro_cctx *cctx = coro->cctx;
830 948
831 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
832 { 950 {
833 PERL_ASYNC_CHECK (); 951 PERL_ASYNC_CHECK ();
… …
852 : cx->blk_gimme == G_SCALAR ? bot + 1 970 : cx->blk_gimme == G_SCALAR ? bot + 1
853 : bot; 971 : bot;
854 972
855 av_extend (av, top - bot); 973 av_extend (av, top - bot);
856 while (bot < top) 974 while (bot < top)
857 av_push (av, SvREFCNT_inc (*bot++)); 975 av_push (av, SvREFCNT_inc_NN (*bot++));
858 976
859 PL_runops = RUNOPS_DEFAULT; 977 PL_runops = RUNOPS_DEFAULT;
860 ENTER; 978 ENTER;
861 SAVETMPS; 979 SAVETMPS;
862 EXTEND (SP, 3); 980 EXTEND (SP, 3);
… …
942 1060
943 TAINT_NOT; 1061 TAINT_NOT;
944 return 0; 1062 return 0;
945} 1063}
946 1064
947/* inject a fake call to Coro::State::_cctx_init into the execution */ 1065static struct coro_cctx *cctx_ssl_cctx;
948/* _cctx_init should be careful, as it could be called at almost any time */ 1066static struct CoroSLF cctx_ssl_frame;
949/* during execution of a perl program */ 1067
1068static void
1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1070{
1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1072 ta->next = 0;
1073}
1074
1075static int
1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1077{
1078 *frame = cctx_ssl_frame;
1079
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081}
1082
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
950static void NOINLINE 1084static void NOINLINE
951cctx_prepare (pTHX_ coro_cctx *cctx) 1085cctx_prepare (pTHX_ coro_cctx *cctx)
952{ 1086{
953 dSP;
954 LOGOP myop;
955
956 PL_top_env = &PL_start_env; 1087 PL_top_env = &PL_start_env;
957 1088
958 if (cctx->flags & CC_TRACE) 1089 if (cctx->flags & CC_TRACE)
959 PL_runops = runops_trace; 1090 PL_runops = runops_trace;
960 1091
961 Zero (&myop, 1, LOGOP); 1092 /* we already must be executing an SLF op, there is no other valid way
962 myop.op_next = PL_op; 1093 * that can lead to creation of a new cctx */
963 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
964 1096
965 PUSHMARK (SP); 1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
966 EXTEND (SP, 2); 1098 cctx_ssl_cctx = cctx;
967 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1099 cctx_ssl_frame = slf_frame;
968 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1100
969 PUTBACK; 1101 slf_frame.prepare = slf_prepare_set_stacklevel;
970 PL_op = (OP *)&myop; 1102 slf_frame.check = slf_check_set_stacklevel;
971 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103}
972 SPAGAIN; 1104
1105/* the tail of transfer: execute stuff we can only do after a transfer */
1106INLINE void
1107transfer_tail (pTHX)
1108{
1109 free_coro_mortal (aTHX);
973} 1110}
974 1111
975/* 1112/*
976 * this is a _very_ stripped down perl interpreter ;) 1113 * this is a _very_ stripped down perl interpreter ;)
977 */ 1114 */
978static void 1115static void
979cctx_run (void *arg) 1116cctx_run (void *arg)
980{ 1117{
1118#ifdef USE_ITHREADS
1119# if CORO_PTHREAD
1120 PERL_SET_CONTEXT (coro_thx);
1121# endif
1122#endif
1123 {
981 dTHX; 1124 dTHX;
982 1125
983 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1126 /* normally we would need to skip the entersub here */
984 UNLOCK; 1127 /* not doing so will re-execute it, which is exactly what we want */
985
986 /* we now skip the entersub that lead to transfer() */
987 PL_op = PL_op->op_next; 1128 /* PL_nop = PL_nop->op_next */
988 1129
989 /* inject a fake subroutine call to cctx_init */ 1130 /* inject a fake subroutine call to cctx_init */
990 cctx_prepare (aTHX_ (coro_cctx *)arg); 1131 cctx_prepare (aTHX_ (coro_cctx *)arg);
991 1132
1133 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX);
1135
992 /* somebody or something will hit me for both perl_run and PL_restartop */ 1136 /* somebody or something will hit me for both perl_run and PL_restartop */
993 PL_restartop = PL_op; 1137 PL_restartop = PL_op;
994 perl_run (PL_curinterp); 1138 perl_run (PL_curinterp);
995 1139
996 /* 1140 /*
997 * If perl-run returns we assume exit() was being called or the coro 1141 * If perl-run returns we assume exit() was being called or the coro
998 * fell off the end, which seems to be the only valid (non-bug) 1142 * fell off the end, which seems to be the only valid (non-bug)
999 * reason for perl_run to return. We try to exit by jumping to the 1143 * reason for perl_run to return. We try to exit by jumping to the
1000 * bootstrap-time "top" top_env, as we cannot restore the "main" 1144 * bootstrap-time "top" top_env, as we cannot restore the "main"
1001 * coroutine as Coro has no such concept 1145 * coroutine as Coro has no such concept
1002 */ 1146 */
1003 PL_top_env = main_top_env; 1147 PL_top_env = main_top_env;
1004 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 }
1005} 1150}
1006 1151
1007static coro_cctx * 1152static coro_cctx *
1008cctx_new () 1153cctx_new ()
1009{ 1154{
1010 coro_cctx *cctx; 1155 coro_cctx *cctx;
1156
1157 ++cctx_count;
1158 New (0, cctx, 1, coro_cctx);
1159
1160 cctx->gen = cctx_gen;
1161 cctx->flags = 0;
1162 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1163
1164 return cctx;
1165}
1166
1167/* create a new cctx only suitable as source */
1168static coro_cctx *
1169cctx_new_empty ()
1170{
1171 coro_cctx *cctx = cctx_new ();
1172
1173 cctx->sptr = 0;
1174 coro_create (&cctx->cctx, 0, 0, 0, 0);
1175
1176 return cctx;
1177}
1178
1179/* create a new cctx suitable as destination/running a perl interpreter */
1180static coro_cctx *
1181cctx_new_run ()
1182{
1183 coro_cctx *cctx = cctx_new ();
1011 void *stack_start; 1184 void *stack_start;
1012 size_t stack_size; 1185 size_t stack_size;
1013 1186
1014 ++cctx_count;
1015
1016 Newz (0, cctx, 1, coro_cctx);
1017
1018#if HAVE_MMAP 1187#if HAVE_MMAP
1019 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1188 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020 /* mmap supposedly does allocate-on-write for us */ 1189 /* mmap supposedly does allocate-on-write for us */
1021 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1022 1191
1023 if (cctx->sptr != (void *)-1) 1192 if (cctx->sptr != (void *)-1)
1024 { 1193 {
1025# if CORO_STACKGUARD 1194 #if CORO_STACKGUARD
1026 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027# endif 1196 #endif
1028 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1029 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030 cctx->flags |= CC_MAPPED; 1199 cctx->flags |= CC_MAPPED;
1031 } 1200 }
1032 else 1201 else
1033#endif 1202#endif
1034 { 1203 {
1035 cctx->ssize = coro_stacksize * (long)sizeof (long); 1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036 New (0, cctx->sptr, coro_stacksize, long); 1205 New (0, cctx->sptr, cctx_stacksize, long);
1037 1206
1038 if (!cctx->sptr) 1207 if (!cctx->sptr)
1039 { 1208 {
1040 perror ("FATAL: unable to allocate stack for coroutine"); 1209 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041 _exit (EXIT_FAILURE); 1210 _exit (EXIT_FAILURE);
1042 } 1211 }
1043 1212
1044 stack_start = cctx->sptr; 1213 stack_start = cctx->sptr;
1045 stack_size = cctx->ssize; 1214 stack_size = cctx->ssize;
1046 } 1215 }
1047 1216
1048 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
1049 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050 1222
1051 return cctx; 1223 return cctx;
1052} 1224}
1053 1225
… …
1056{ 1228{
1057 if (!cctx) 1229 if (!cctx)
1058 return; 1230 return;
1059 1231
1060 --cctx_count; 1232 --cctx_count;
1233 coro_destroy (&cctx->cctx);
1061 1234
1235 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr)
1237 {
1062#if CORO_USE_VALGRIND 1238 #if CORO_USE_VALGRIND
1063 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1064#endif 1240 #endif
1065 1241
1066#if HAVE_MMAP 1242#if HAVE_MMAP
1067 if (cctx->flags & CC_MAPPED) 1243 if (cctx->flags & CC_MAPPED)
1068 munmap (cctx->sptr, cctx->ssize); 1244 munmap (cctx->sptr, cctx->ssize);
1069 else 1245 else
1070#endif 1246#endif
1071 Safefree (cctx->sptr); 1247 Safefree (cctx->sptr);
1248 }
1072 1249
1073 Safefree (cctx); 1250 Safefree (cctx);
1074} 1251}
1075 1252
1076/* wether this cctx should be destructed */ 1253/* wether this cctx should be destructed */
1077#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1078 1255
1079static coro_cctx * 1256static coro_cctx *
1080cctx_get (pTHX) 1257cctx_get (pTHX)
1081{ 1258{
1082 while (expect_true (cctx_first)) 1259 while (expect_true (cctx_first))
… …
1089 return cctx; 1266 return cctx;
1090 1267
1091 cctx_destroy (cctx); 1268 cctx_destroy (cctx);
1092 } 1269 }
1093 1270
1094 return cctx_new (); 1271 return cctx_new_run ();
1095} 1272}
1096 1273
1097static void 1274static void
1098cctx_put (coro_cctx *cctx) 1275cctx_put (coro_cctx *cctx)
1099{ 1276{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1278
1100 /* free another cctx if overlimit */ 1279 /* free another cctx if overlimit */
1101 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1280 if (expect_false (cctx_idle >= cctx_max_idle))
1102 { 1281 {
1103 coro_cctx *first = cctx_first; 1282 coro_cctx *first = cctx_first;
1104 cctx_first = first->next; 1283 cctx_first = first->next;
1105 --cctx_idle; 1284 --cctx_idle;
1106 1285
… …
1115/** coroutine switching *****************************************************/ 1294/** coroutine switching *****************************************************/
1116 1295
1117static void 1296static void
1118transfer_check (pTHX_ struct coro *prev, struct coro *next) 1297transfer_check (pTHX_ struct coro *prev, struct coro *next)
1119{ 1298{
1299 /* TODO: throwing up here is considered harmful */
1300
1120 if (expect_true (prev != next)) 1301 if (expect_true (prev != next))
1121 { 1302 {
1122 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1303 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1123 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1124 1305
1125 if (expect_false (next->flags & CF_RUNNING)) 1306 if (expect_false (next->flags & CF_RUNNING))
1126 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1127 1308
1128 if (expect_false (next->flags & CF_DESTROYED)) 1309 if (expect_false (next->flags & CF_DESTROYED))
1129 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1130 1311
1131 if (
1132#if PERL_VERSION_ATLEAST (5,9,0) 1312#if !PERL_VERSION_ATLEAST (5,10,0)
1133 expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1134#else
1135 expect_false (PL_lex_state != LEX_NOTPARSING) 1313 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136#endif
1137 )
1138 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1315#endif
1139 } 1316 }
1140} 1317}
1141 1318
1142/* always use the TRANSFER macro */ 1319/* always use the TRANSFER macro */
1143static void NOINLINE 1320static void NOINLINE /* noinline so we have a fixed stackframe */
1144transfer (pTHX_ struct coro *prev, struct coro *next) 1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1145{ 1322{
1146 dSTACKLEVEL; 1323 dSTACKLEVEL;
1147 static volatile int has_throw;
1148 1324
1149 /* sometimes transfer is only called to set idle_sp */ 1325 /* sometimes transfer is only called to set idle_sp */
1150 if (expect_false (!next)) 1326 if (expect_false (!next))
1151 { 1327 {
1152 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1328 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1156 { 1332 {
1157 coro_cctx *prev__cctx; 1333 coro_cctx *prev__cctx;
1158 1334
1159 if (expect_false (prev->flags & CF_NEW)) 1335 if (expect_false (prev->flags & CF_NEW))
1160 { 1336 {
1161 /* create a new empty context */ 1337 /* create a new empty/source context */
1162 Newz (0, prev->cctx, 1, coro_cctx); 1338 prev->cctx = cctx_new_empty ();
1163 prev->flags &= ~CF_NEW; 1339 prev->flags &= ~CF_NEW;
1164 prev->flags |= CF_RUNNING; 1340 prev->flags |= CF_RUNNING;
1165 } 1341 }
1166 1342
1167 prev->flags &= ~CF_RUNNING; 1343 prev->flags &= ~CF_RUNNING;
1168 next->flags |= CF_RUNNING; 1344 next->flags |= CF_RUNNING;
1169
1170 LOCK;
1171 1345
1172 /* first get rid of the old state */ 1346 /* first get rid of the old state */
1173 save_perl (aTHX_ prev); 1347 save_perl (aTHX_ prev);
1174 1348
1175 if (expect_false (next->flags & CF_NEW)) 1349 if (expect_false (next->flags & CF_NEW))
… …
1182 else 1356 else
1183 load_perl (aTHX_ next); 1357 load_perl (aTHX_ next);
1184 1358
1185 prev__cctx = prev->cctx; 1359 prev__cctx = prev->cctx;
1186 1360
1187 /* possibly "free" the cctx */ 1361 /* possibly untie and reuse the cctx */
1188 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1362 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE)
1365 && !force_cctx
1366 ))
1189 { 1367 {
1190 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1368 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1191 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1192 1370
1193 prev->cctx = 0; 1371 prev->cctx = 0;
1194 1372
1195 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1196 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1203 1381
1204 ++next->usecount; 1382 ++next->usecount;
1205 1383
1206 if (expect_true (!next->cctx)) 1384 if (expect_true (!next->cctx))
1207 next->cctx = cctx_get (aTHX); 1385 next->cctx = cctx_get (aTHX);
1208
1209 has_throw = !!next->throw;
1210 1386
1211 if (expect_false (prev__cctx != next->cctx)) 1387 if (expect_false (prev__cctx != next->cctx))
1212 { 1388 {
1213 prev__cctx->top_env = PL_top_env; 1389 prev__cctx->top_env = PL_top_env;
1214 PL_top_env = next->cctx->top_env; 1390 PL_top_env = next->cctx->top_env;
1215 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1216 } 1392 }
1217 1393
1218 free_coro_mortal (aTHX); 1394 transfer_tail (aTHX);
1219 UNLOCK;
1220
1221 if (expect_false (has_throw))
1222 {
1223 struct coro *coro = SvSTATE (coro_current);
1224
1225 if (coro->throw)
1226 {
1227 SV *exception = coro->throw;
1228 coro->throw = 0;
1229 sv_setsv (ERRSV, exception);
1230 croak (0);
1231 }
1232 }
1233 } 1395 }
1234} 1396}
1235 1397
1236struct transfer_args
1237{
1238 struct coro *prev, *next;
1239};
1240
1241#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1398#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1242#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1243 1400
1244/** high level stuff ********************************************************/ 1401/** high level stuff ********************************************************/
1245 1402
1246static int 1403static int
1247coro_state_destroy (pTHX_ struct coro *coro) 1404coro_state_destroy (pTHX_ struct coro *coro)
1248{ 1405{
1249 if (coro->flags & CF_DESTROYED) 1406 if (coro->flags & CF_DESTROYED)
1250 return 0; 1407 return 0;
1408
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro);
1251 1411
1252 coro->flags |= CF_DESTROYED; 1412 coro->flags |= CF_DESTROYED;
1253 1413
1254 if (coro->flags & CF_READY) 1414 if (coro->flags & CF_READY)
1255 { 1415 {
1256 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1416 /* reduce nready, as destroying a ready coro effectively unreadies it */
1257 /* alternative: look through all ready queues and remove the coro */ 1417 /* alternative: look through all ready queues and remove the coro */
1258 LOCK;
1259 --coro_nready; 1418 --coro_nready;
1260 UNLOCK;
1261 } 1419 }
1262 else 1420 else
1263 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1264 1422
1265 if (coro->mainstack && coro->mainstack != main_mainstack) 1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1266 { 1424 {
1267 struct coro temp; 1425 struct coro temp;
1268 1426
1269 if (coro->flags & CF_RUNNING) 1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1270 croak ("FATAL: tried to destroy currently running coroutine");
1271 1428
1272 save_perl (aTHX_ &temp); 1429 save_perl (aTHX_ &temp);
1273 load_perl (aTHX_ coro); 1430 load_perl (aTHX_ coro);
1274 1431
1275 coro_destroy (aTHX_ coro); 1432 coro_destruct (aTHX_ coro);
1276 1433
1277 load_perl (aTHX_ &temp); 1434 load_perl (aTHX_ &temp);
1278 1435
1279 coro->slot = 0; 1436 coro->slot = 0;
1280 } 1437 }
… …
1326# define MGf_DUP 0 1483# define MGf_DUP 0
1327#endif 1484#endif
1328}; 1485};
1329 1486
1330static void 1487static void
1331prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1488prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1332{ 1489{
1333 ta->prev = SvSTATE (prev_sv); 1490 ta->prev = SvSTATE (prev_sv);
1334 ta->next = SvSTATE (next_sv); 1491 ta->next = SvSTATE (next_sv);
1335 TRANSFER_CHECK (*ta); 1492 TRANSFER_CHECK (*ta);
1336} 1493}
1337 1494
1338static void 1495static void
1339api_transfer (SV *prev_sv, SV *next_sv) 1496api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1340{ 1497{
1341 dTHX;
1342 struct transfer_args ta; 1498 struct coro_transfer_args ta;
1343 1499
1344 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1345 TRANSFER (ta); 1501 TRANSFER (ta, 1);
1502}
1503
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1346} 1525}
1347 1526
1348/** Coro ********************************************************************/ 1527/** Coro ********************************************************************/
1349 1528
1350static void 1529INLINE void
1351coro_enq (pTHX_ SV *coro_sv) 1530coro_enq (pTHX_ struct coro *coro)
1352{ 1531{
1353 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1354} 1533}
1355 1534
1356static SV * 1535INLINE SV *
1357coro_deq (pTHX) 1536coro_deq (pTHX)
1358{ 1537{
1359 int prio; 1538 int prio;
1360 1539
1361 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1364 1543
1365 return 0; 1544 return 0;
1366} 1545}
1367 1546
1368static int 1547static int
1369api_ready (SV *coro_sv) 1548api_ready (pTHX_ SV *coro_sv)
1370{ 1549{
1371 dTHX;
1372 struct coro *coro; 1550 struct coro *coro;
1551 SV *sv_hook;
1552 void (*xs_hook)(void);
1373 1553
1374 if (SvROK (coro_sv)) 1554 if (SvROK (coro_sv))
1375 coro_sv = SvRV (coro_sv); 1555 coro_sv = SvRV (coro_sv);
1376 1556
1377 coro = SvSTATE (coro_sv); 1557 coro = SvSTATE (coro_sv);
… …
1379 if (coro->flags & CF_READY) 1559 if (coro->flags & CF_READY)
1380 return 0; 1560 return 0;
1381 1561
1382 coro->flags |= CF_READY; 1562 coro->flags |= CF_READY;
1383 1563
1384 LOCK; 1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1385 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1566
1567 coro_enq (aTHX_ coro);
1386 ++coro_nready; 1568 ++coro_nready;
1387 UNLOCK; 1569
1570 if (sv_hook)
1571 {
1572 dSP;
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1580
1581 FREETMPS;
1582 LEAVE;
1583 }
1584
1585 if (xs_hook)
1586 xs_hook ();
1388 1587
1389 return 1; 1588 return 1;
1390} 1589}
1391 1590
1392static int 1591static int
1393api_is_ready (SV *coro_sv) 1592api_is_ready (pTHX_ SV *coro_sv)
1394{ 1593{
1395 dTHX;
1396 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1594 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1397} 1595}
1398 1596
1399static void 1597INLINE void
1400prepare_schedule (pTHX_ struct transfer_args *ta) 1598prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1401{ 1599{
1402 SV *prev_sv, *next_sv; 1600 SV *prev_sv, *next_sv;
1403 1601
1404 for (;;) 1602 for (;;)
1405 { 1603 {
1406 LOCK;
1407 next_sv = coro_deq (aTHX); 1604 next_sv = coro_deq (aTHX);
1408 1605
1409 /* nothing to schedule: call the idle handler */ 1606 /* nothing to schedule: call the idle handler */
1410 if (expect_false (!next_sv)) 1607 if (expect_false (!next_sv))
1411 { 1608 {
1412 dSP; 1609 dSP;
1413 UNLOCK;
1414 1610
1415 ENTER; 1611 ENTER;
1416 SAVETMPS; 1612 SAVETMPS;
1417 1613
1418 PUSHMARK (SP); 1614 PUSHMARK (SP);
1419 PUTBACK; 1615 PUTBACK;
1420 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1421 SPAGAIN;
1422 1617
1423 FREETMPS; 1618 FREETMPS;
1424 LEAVE; 1619 LEAVE;
1425 continue; 1620 continue;
1426 } 1621 }
1427 1622
1428 ta->next = SvSTATE (next_sv); 1623 ta->next = SvSTATE_hv (next_sv);
1429 1624
1430 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1431 if (expect_false (ta->next->flags & CF_DESTROYED)) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1432 { 1627 {
1433 UNLOCK;
1434 SvREFCNT_dec (next_sv); 1628 SvREFCNT_dec (next_sv);
1435 /* coro_nready is already taken care of by destroy */ 1629 /* coro_nready has already been taken care of by destroy */
1436 continue; 1630 continue;
1437 } 1631 }
1438 1632
1439 --coro_nready; 1633 --coro_nready;
1440 UNLOCK;
1441 break; 1634 break;
1442 } 1635 }
1443 1636
1444 /* free this only after the transfer */ 1637 /* free this only after the transfer */
1445 prev_sv = SvRV (coro_current); 1638 prev_sv = SvRV (coro_current);
1446 ta->prev = SvSTATE (prev_sv); 1639 ta->prev = SvSTATE_hv (prev_sv);
1447 TRANSFER_CHECK (*ta); 1640 TRANSFER_CHECK (*ta);
1448 assert (ta->next->flags & CF_READY); 1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1449 ta->next->flags &= ~CF_READY; 1642 ta->next->flags &= ~CF_READY;
1450 SvRV_set (coro_current, next_sv); 1643 SvRV_set (coro_current, next_sv);
1451 1644
1452 LOCK;
1453 free_coro_mortal (aTHX); 1645 free_coro_mortal (aTHX);
1454 coro_mortal = prev_sv; 1646 coro_mortal = prev_sv;
1455 UNLOCK;
1456} 1647}
1457 1648
1458static void 1649INLINE void
1459prepare_cede (pTHX_ struct transfer_args *ta) 1650prepare_cede (pTHX_ struct coro_transfer_args *ta)
1460{ 1651{
1461 api_ready (coro_current); 1652 api_ready (aTHX_ coro_current);
1462 prepare_schedule (aTHX_ ta); 1653 prepare_schedule (aTHX_ ta);
1463} 1654}
1464 1655
1656INLINE void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{
1659 SV *prev = SvRV (coro_current);
1660
1661 if (coro_nready)
1662 {
1663 prepare_schedule (aTHX_ ta);
1664 api_ready (aTHX_ prev);
1665 }
1666 else
1667 prepare_nop (aTHX_ ta);
1668}
1669
1670static void
1671api_schedule (pTHX)
1672{
1673 struct coro_transfer_args ta;
1674
1675 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1);
1677}
1678
1465static int 1679static int
1466prepare_cede_notself (pTHX_ struct transfer_args *ta) 1680api_cede (pTHX)
1467{ 1681{
1468 if (coro_nready) 1682 struct coro_transfer_args ta;
1469 { 1683
1470 SV *prev = SvRV (coro_current);
1471 prepare_schedule (aTHX_ ta); 1684 prepare_cede (aTHX_ &ta);
1472 api_ready (prev); 1685
1686 if (expect_true (ta.prev != ta.next))
1687 {
1688 TRANSFER (ta, 1);
1473 return 1; 1689 return 1;
1474 } 1690 }
1475 else 1691 else
1476 return 0; 1692 return 0;
1477} 1693}
1478 1694
1479static void
1480api_schedule (void)
1481{
1482 dTHX;
1483 struct transfer_args ta;
1484
1485 prepare_schedule (aTHX_ &ta);
1486 TRANSFER (ta);
1487}
1488
1489static int 1695static int
1490api_cede (void) 1696api_cede_notself (pTHX)
1491{ 1697{
1492 dTHX; 1698 if (coro_nready)
1699 {
1493 struct transfer_args ta; 1700 struct coro_transfer_args ta;
1494 1701
1495 prepare_cede (aTHX_ &ta); 1702 prepare_cede_notself (aTHX_ &ta);
1496
1497 if (expect_true (ta.prev != ta.next))
1498 {
1499 TRANSFER (ta); 1703 TRANSFER (ta, 1);
1500 return 1; 1704 return 1;
1501 } 1705 }
1502 else 1706 else
1503 return 0; 1707 return 0;
1504} 1708}
1505 1709
1506static int 1710static void
1507api_cede_notself (void)
1508{
1509 dTHX;
1510 struct transfer_args ta;
1511
1512 if (prepare_cede_notself (aTHX_ &ta))
1513 {
1514 TRANSFER (ta);
1515 return 1;
1516 }
1517 else
1518 return 0;
1519}
1520
1521static void
1522api_trace (SV *coro_sv, int flags) 1711api_trace (pTHX_ SV *coro_sv, int flags)
1523{ 1712{
1524 dTHX;
1525 struct coro *coro = SvSTATE (coro_sv); 1713 struct coro *coro = SvSTATE (coro_sv);
1526 1714
1527 if (flags & CC_TRACE) 1715 if (flags & CC_TRACE)
1528 { 1716 {
1529 if (!coro->cctx) 1717 if (!coro->cctx)
1530 coro->cctx = cctx_new (); 1718 coro->cctx = cctx_new_run ();
1531 else if (!(coro->cctx->flags & CC_TRACE)) 1719 else if (!(coro->cctx->flags & CC_TRACE))
1532 croak ("cannot enable tracing on coroutine with custom stack"); 1720 croak ("cannot enable tracing on coroutine with custom stack,");
1533 1721
1534 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1535 } 1723 }
1536 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1537 { 1725 {
… …
1542 else 1730 else
1543 coro->slot->runops = RUNOPS_DEFAULT; 1731 coro->slot->runops = RUNOPS_DEFAULT;
1544 } 1732 }
1545} 1733}
1546 1734
1735/*****************************************************************************/
1736/* rouse callback */
1737
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739
1740static void
1741coro_rouse_callback (pTHX_ CV *cv)
1742{
1743 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG;
1745
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 {
1748 /* first call, set args */
1749 int i;
1750 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752
1753 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756
1757 /* better take a full copy of the arguments */
1758 while (items--)
1759 av_store (av, items, newSVsv (ST (items)));
1760 }
1761
1762 XSRETURN_EMPTY;
1763}
1764
1765static int
1766slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1767{
1768 SV *data = (SV *)frame->data;
1769
1770 if (CORO_THROW)
1771 return 0;
1772
1773 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1774 return 1;
1775
1776 /* now push all results on the stack */
1777 {
1778 dSP;
1779 AV *av = (AV *)SvRV (data);
1780 int i;
1781
1782 EXTEND (SP, AvFILLp (av) + 1);
1783 for (i = 0; i <= AvFILLp (av); ++i)
1784 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1785
1786 /* we have stolen the elements, so ste length to zero and free */
1787 AvFILLp (av) = -1;
1788 av_undef (av);
1789
1790 PUTBACK;
1791 }
1792
1793 return 0;
1794}
1795
1796static void
1797slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1798{
1799 SV *cb;
1800
1801 if (items)
1802 cb = arg [0];
1803 else
1804 {
1805 struct coro *coro = SvSTATE_current;
1806
1807 if (!coro->rouse_cb)
1808 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1809
1810 cb = sv_2mortal (coro->rouse_cb);
1811 coro->rouse_cb = 0;
1812 }
1813
1814 if (!SvROK (cb)
1815 || SvTYPE (SvRV (cb)) != SVt_PVCV
1816 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1817 croak ("Coro::rouse_wait called with illegal callback argument,");
1818
1819 {
1820 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1821 SV *data = (SV *)GENSUB_ARG;
1822
1823 frame->data = (void *)data;
1824 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1825 frame->check = slf_check_rouse_wait;
1826 }
1827}
1828
1829static SV *
1830coro_new_rouse_cb (pTHX)
1831{
1832 HV *hv = (HV *)SvRV (coro_current);
1833 struct coro *coro = SvSTATE_hv (hv);
1834 SV *data = newRV_inc ((SV *)hv);
1835 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1836
1837 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1838 SvREFCNT_dec (data); /* magicext increases the refcount */
1839
1840 SvREFCNT_dec (coro->rouse_cb);
1841 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1842
1843 return cb;
1844}
1845
1846/*****************************************************************************/
1847/* schedule-like-function opcode (SLF) */
1848
1849static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1850static const CV *slf_cv;
1851static SV **slf_argv;
1852static int slf_argc, slf_arga; /* count, allocated */
1853static I32 slf_ax; /* top of stack, for restore */
1854
1855/* this restores the stack in the case we patched the entersub, to */
1856/* recreate the stack frame as perl will on following calls */
1857/* since entersub cleared the stack */
1858static OP *
1859pp_restore (pTHX)
1860{
1861 int i;
1862 SV **SP = PL_stack_base + slf_ax;
1863
1864 PUSHMARK (SP);
1865
1866 EXTEND (SP, slf_argc + 1);
1867
1868 for (i = 0; i < slf_argc; ++i)
1869 PUSHs (sv_2mortal (slf_argv [i]));
1870
1871 PUSHs ((SV *)CvGV (slf_cv));
1872
1873 RETURNOP (slf_restore.op_first);
1874}
1875
1876static void
1877slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1878{
1879 SV **arg = (SV **)slf_frame.data;
1880
1881 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1882}
1883
1884static void
1885slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1886{
1887 if (items != 2)
1888 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1889
1890 frame->prepare = slf_prepare_transfer;
1891 frame->check = slf_check_nop;
1892 frame->data = (void *)arg; /* let's hope it will stay valid */
1893}
1894
1895static void
1896slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1897{
1898 frame->prepare = prepare_schedule;
1899 frame->check = slf_check_nop;
1900}
1901
1902static void
1903slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{
1905 frame->prepare = prepare_cede;
1906 frame->check = slf_check_nop;
1907}
1908
1909static void
1910slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{
1912 frame->prepare = prepare_cede_notself;
1913 frame->check = slf_check_nop;
1914}
1915
1916/*
1917 * these not obviously related functions are all rolled into one
1918 * function to increase chances that they all will call transfer with the same
1919 * stack offset
1920 * SLF stands for "schedule-like-function".
1921 */
1922static OP *
1923pp_slf (pTHX)
1924{
1925 I32 checkmark; /* mark SP to see how many elements check has pushed */
1926
1927 /* set up the slf frame, unless it has already been set-up */
1928 /* the latter happens when a new coro has been started */
1929 /* or when a new cctx was attached to an existing coroutine */
1930 if (expect_true (!slf_frame.prepare))
1931 {
1932 /* first iteration */
1933 dSP;
1934 SV **arg = PL_stack_base + TOPMARK + 1;
1935 int items = SP - arg; /* args without function object */
1936 SV *gv = *sp;
1937
1938 /* do a quick consistency check on the "function" object, and if it isn't */
1939 /* for us, divert to the real entersub */
1940 if (SvTYPE (gv) != SVt_PVGV
1941 || !GvCV (gv)
1942 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1943 return PL_ppaddr[OP_ENTERSUB](aTHX);
1944
1945 if (!(PL_op->op_flags & OPf_STACKED))
1946 {
1947 /* ampersand-form of call, use @_ instead of stack */
1948 AV *av = GvAV (PL_defgv);
1949 arg = AvARRAY (av);
1950 items = AvFILLp (av) + 1;
1951 }
1952
1953 /* now call the init function, which needs to set up slf_frame */
1954 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1955 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1956
1957 /* pop args */
1958 SP = PL_stack_base + POPMARK;
1959
1960 PUTBACK;
1961 }
1962
1963 /* now that we have a slf_frame, interpret it! */
1964 /* we use a callback system not to make the code needlessly */
1965 /* complicated, but so we can run multiple perl coros from one cctx */
1966
1967 do
1968 {
1969 struct coro_transfer_args ta;
1970
1971 slf_frame.prepare (aTHX_ &ta);
1972 TRANSFER (ta, 0);
1973
1974 checkmark = PL_stack_sp - PL_stack_base;
1975 }
1976 while (slf_frame.check (aTHX_ &slf_frame));
1977
1978 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1979
1980 /* exception handling */
1981 if (expect_false (CORO_THROW))
1982 {
1983 SV *exception = sv_2mortal (CORO_THROW);
1984
1985 CORO_THROW = 0;
1986 sv_setsv (ERRSV, exception);
1987 croak (0);
1988 }
1989
1990 /* return value handling - mostly like entersub */
1991 /* make sure we put something on the stack in scalar context */
1992 if (GIMME_V == G_SCALAR)
1993 {
1994 dSP;
1995 SV **bot = PL_stack_base + checkmark;
1996
1997 if (sp == bot) /* too few, push undef */
1998 bot [1] = &PL_sv_undef;
1999 else if (sp != bot + 1) /* too many, take last one */
2000 bot [1] = *sp;
2001
2002 SP = bot + 1;
2003
2004 PUTBACK;
2005 }
2006
2007 return NORMAL;
2008}
2009
2010static void
2011api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2012{
2013 int i;
2014 SV **arg = PL_stack_base + ax;
2015 int items = PL_stack_sp - arg + 1;
2016
2017 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2018
2019 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2020 && PL_op->op_ppaddr != pp_slf)
2021 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2022
2023 CvFLAGS (cv) |= CVf_SLF;
2024 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2025 slf_cv = cv;
2026
2027 /* we patch the op, and then re-run the whole call */
2028 /* we have to put the same argument on the stack for this to work */
2029 /* and this will be done by pp_restore */
2030 slf_restore.op_next = (OP *)&slf_restore;
2031 slf_restore.op_type = OP_CUSTOM;
2032 slf_restore.op_ppaddr = pp_restore;
2033 slf_restore.op_first = PL_op;
2034
2035 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2036
2037 if (PL_op->op_flags & OPf_STACKED)
2038 {
2039 if (items > slf_arga)
2040 {
2041 slf_arga = items;
2042 free (slf_argv);
2043 slf_argv = malloc (slf_arga * sizeof (SV *));
2044 }
2045
2046 slf_argc = items;
2047
2048 for (i = 0; i < items; ++i)
2049 slf_argv [i] = SvREFCNT_inc (arg [i]);
2050 }
2051 else
2052 slf_argc = 0;
2053
2054 PL_op->op_ppaddr = pp_slf;
2055 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2056
2057 PL_op = (OP *)&slf_restore;
2058}
2059
2060/*****************************************************************************/
2061/* PerlIO::cede */
2062
2063typedef struct
2064{
2065 PerlIOBuf base;
2066 NV next, every;
2067} PerlIOCede;
2068
2069static IV
2070PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2071{
2072 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2073
2074 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2075 self->next = nvtime () + self->every;
2076
2077 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2078}
2079
2080static SV *
2081PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2082{
2083 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2084
2085 return newSVnv (self->every);
2086}
2087
2088static IV
2089PerlIOCede_flush (pTHX_ PerlIO *f)
2090{
2091 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2092 double now = nvtime ();
2093
2094 if (now >= self->next)
2095 {
2096 api_cede (aTHX);
2097 self->next = now + self->every;
2098 }
2099
2100 return PerlIOBuf_flush (aTHX_ f);
2101}
2102
2103static PerlIO_funcs PerlIO_cede =
2104{
2105 sizeof(PerlIO_funcs),
2106 "cede",
2107 sizeof(PerlIOCede),
2108 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2109 PerlIOCede_pushed,
2110 PerlIOBuf_popped,
2111 PerlIOBuf_open,
2112 PerlIOBase_binmode,
2113 PerlIOCede_getarg,
2114 PerlIOBase_fileno,
2115 PerlIOBuf_dup,
2116 PerlIOBuf_read,
2117 PerlIOBuf_unread,
2118 PerlIOBuf_write,
2119 PerlIOBuf_seek,
2120 PerlIOBuf_tell,
2121 PerlIOBuf_close,
2122 PerlIOCede_flush,
2123 PerlIOBuf_fill,
2124 PerlIOBase_eof,
2125 PerlIOBase_error,
2126 PerlIOBase_clearerr,
2127 PerlIOBase_setlinebuf,
2128 PerlIOBuf_get_base,
2129 PerlIOBuf_bufsiz,
2130 PerlIOBuf_get_ptr,
2131 PerlIOBuf_get_cnt,
2132 PerlIOBuf_set_ptrcnt,
2133};
2134
2135/*****************************************************************************/
2136/* Coro::Semaphore & Coro::Signal */
2137
2138static SV *
2139coro_waitarray_new (pTHX_ int count)
2140{
2141 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2142 AV *av = newAV ();
2143 SV **ary;
2144
2145 /* unfortunately, building manually saves memory */
2146 Newx (ary, 2, SV *);
2147 AvALLOC (av) = ary;
2148 /*AvARRAY (av) = ary;*/
2149 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2150 AvMAX (av) = 1;
2151 AvFILLp (av) = 0;
2152 ary [0] = newSViv (count);
2153
2154 return newRV_noinc ((SV *)av);
2155}
2156
2157/* semaphore */
2158
2159static void
2160coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2161{
2162 SV *count_sv = AvARRAY (av)[0];
2163 IV count = SvIVX (count_sv);
2164
2165 count += adjust;
2166 SvIVX (count_sv) = count;
2167
2168 /* now wake up as many waiters as are expected to lock */
2169 while (count > 0 && AvFILLp (av) > 0)
2170 {
2171 SV *cb;
2172
2173 /* swap first two elements so we can shift a waiter */
2174 AvARRAY (av)[0] = AvARRAY (av)[1];
2175 AvARRAY (av)[1] = count_sv;
2176 cb = av_shift (av);
2177
2178 if (SvOBJECT (cb))
2179 {
2180 api_ready (aTHX_ cb);
2181 --count;
2182 }
2183 else if (SvTYPE (cb) == SVt_PVCV)
2184 {
2185 dSP;
2186 PUSHMARK (SP);
2187 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2188 PUTBACK;
2189 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2190 }
2191
2192 SvREFCNT_dec (cb);
2193 }
2194}
2195
2196static void
2197coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2198{
2199 /* call $sem->adjust (0) to possibly wake up some other waiters */
2200 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2201}
2202
2203static int
2204slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2205{
2206 AV *av = (AV *)frame->data;
2207 SV *count_sv = AvARRAY (av)[0];
2208
2209 /* if we are about to throw, don't actually acquire the lock, just throw */
2210 if (CORO_THROW)
2211 return 0;
2212 else if (SvIVX (count_sv) > 0)
2213 {
2214 SvSTATE_current->on_destroy = 0;
2215
2216 if (acquire)
2217 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2218 else
2219 coro_semaphore_adjust (aTHX_ av, 0);
2220
2221 return 0;
2222 }
2223 else
2224 {
2225 int i;
2226 /* if we were woken up but can't down, we look through the whole */
2227 /* waiters list and only add us if we aren't in there already */
2228 /* this avoids some degenerate memory usage cases */
2229
2230 for (i = 1; i <= AvFILLp (av); ++i)
2231 if (AvARRAY (av)[i] == SvRV (coro_current))
2232 return 1;
2233
2234 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2235 return 1;
2236 }
2237}
2238
2239static int
2240slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2241{
2242 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2243}
2244
2245static int
2246slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2247{
2248 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2249}
2250
2251static void
2252slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2253{
2254 AV *av = (AV *)SvRV (arg [0]);
2255
2256 if (SvIVX (AvARRAY (av)[0]) > 0)
2257 {
2258 frame->data = (void *)av;
2259 frame->prepare = prepare_nop;
2260 }
2261 else
2262 {
2263 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2264
2265 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2266 frame->prepare = prepare_schedule;
2267
2268 /* to avoid race conditions when a woken-up coro gets terminated */
2269 /* we arrange for a temporary on_destroy that calls adjust (0) */
2270 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2271 }
2272}
2273
2274static void
2275slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2276{
2277 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2278 frame->check = slf_check_semaphore_down;
2279}
2280
2281static void
2282slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 if (items >= 2)
2285 {
2286 /* callback form */
2287 AV *av = (AV *)SvRV (arg [0]);
2288 HV *st;
2289 GV *gvp;
2290 CV *cb_cv = sv_2cv (arg [1], &st, &gvp, 0);
2291
2292 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2293
2294 if (SvIVX (AvARRAY (av)[0]) > 0)
2295 coro_semaphore_adjust (aTHX_ av, 0);
2296
2297 frame->prepare = prepare_nop;
2298 frame->check = slf_check_nop;
2299 }
2300 else
2301 {
2302 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2303 frame->check = slf_check_semaphore_wait;
2304 }
2305}
2306
2307/* signal */
2308
2309static void
2310coro_signal_wake (pTHX_ AV *av, int count)
2311{
2312 SvIVX (AvARRAY (av)[0]) = 0;
2313
2314 /* now signal count waiters */
2315 while (count > 0 && AvFILLp (av) > 0)
2316 {
2317 SV *cb;
2318
2319 /* swap first two elements so we can shift a waiter */
2320 cb = AvARRAY (av)[0];
2321 AvARRAY (av)[0] = AvARRAY (av)[1];
2322 AvARRAY (av)[1] = cb;
2323
2324 cb = av_shift (av);
2325
2326 api_ready (aTHX_ cb);
2327 sv_setiv (cb, 0); /* signal waiter */
2328 SvREFCNT_dec (cb);
2329
2330 --count;
2331 }
2332}
2333
2334static int
2335slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2336{
2337 /* if we are about to throw, also stop waiting */
2338 return SvROK ((SV *)frame->data) && !CORO_THROW;
2339}
2340
2341static void
2342slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2343{
2344 AV *av = (AV *)SvRV (arg [0]);
2345
2346 if (SvIVX (AvARRAY (av)[0]))
2347 {
2348 SvIVX (AvARRAY (av)[0]) = 0;
2349 frame->prepare = prepare_nop;
2350 frame->check = slf_check_nop;
2351 }
2352 else
2353 {
2354 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2355
2356 av_push (av, waiter);
2357
2358 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2359 frame->prepare = prepare_schedule;
2360 frame->check = slf_check_signal_wait;
2361 }
2362}
2363
2364/*****************************************************************************/
2365/* Coro::AIO */
2366
2367#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2368
2369/* helper storage struct */
2370struct io_state
2371{
2372 int errorno;
2373 I32 laststype; /* U16 in 5.10.0 */
2374 int laststatval;
2375 Stat_t statcache;
2376};
2377
2378static void
2379coro_aio_callback (pTHX_ CV *cv)
2380{
2381 dXSARGS;
2382 AV *state = (AV *)GENSUB_ARG;
2383 SV *coro = av_pop (state);
2384 SV *data_sv = newSV (sizeof (struct io_state));
2385
2386 av_extend (state, items);
2387
2388 sv_upgrade (data_sv, SVt_PV);
2389 SvCUR_set (data_sv, sizeof (struct io_state));
2390 SvPOK_only (data_sv);
2391
2392 {
2393 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2394
2395 data->errorno = errno;
2396 data->laststype = PL_laststype;
2397 data->laststatval = PL_laststatval;
2398 data->statcache = PL_statcache;
2399 }
2400
2401 /* now build the result vector out of all the parameters and the data_sv */
2402 {
2403 int i;
2404
2405 for (i = 0; i < items; ++i)
2406 av_push (state, SvREFCNT_inc_NN (ST (i)));
2407 }
2408
2409 av_push (state, data_sv);
2410
2411 api_ready (aTHX_ coro);
2412 SvREFCNT_dec (coro);
2413 SvREFCNT_dec ((AV *)state);
2414}
2415
2416static int
2417slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2418{
2419 AV *state = (AV *)frame->data;
2420
2421 /* if we are about to throw, return early */
2422 /* this does not cancel the aio request, but at least */
2423 /* it quickly returns */
2424 if (CORO_THROW)
2425 return 0;
2426
2427 /* one element that is an RV? repeat! */
2428 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2429 return 1;
2430
2431 /* restore status */
2432 {
2433 SV *data_sv = av_pop (state);
2434 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2435
2436 errno = data->errorno;
2437 PL_laststype = data->laststype;
2438 PL_laststatval = data->laststatval;
2439 PL_statcache = data->statcache;
2440
2441 SvREFCNT_dec (data_sv);
2442 }
2443
2444 /* push result values */
2445 {
2446 dSP;
2447 int i;
2448
2449 EXTEND (SP, AvFILLp (state) + 1);
2450 for (i = 0; i <= AvFILLp (state); ++i)
2451 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2452
2453 PUTBACK;
2454 }
2455
2456 return 0;
2457}
2458
2459static void
2460slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2461{
2462 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2463 SV *coro_hv = SvRV (coro_current);
2464 struct coro *coro = SvSTATE_hv (coro_hv);
2465
2466 /* put our coroutine id on the state arg */
2467 av_push (state, SvREFCNT_inc_NN (coro_hv));
2468
2469 /* first see whether we have a non-zero priority and set it as AIO prio */
2470 if (coro->prio)
2471 {
2472 dSP;
2473
2474 static SV *prio_cv;
2475 static SV *prio_sv;
2476
2477 if (expect_false (!prio_cv))
2478 {
2479 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2480 prio_sv = newSViv (0);
2481 }
2482
2483 PUSHMARK (SP);
2484 sv_setiv (prio_sv, coro->prio);
2485 XPUSHs (prio_sv);
2486
2487 PUTBACK;
2488 call_sv (prio_cv, G_VOID | G_DISCARD);
2489 }
2490
2491 /* now call the original request */
2492 {
2493 dSP;
2494 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2495 int i;
2496
2497 PUSHMARK (SP);
2498
2499 /* first push all args to the stack */
2500 EXTEND (SP, items + 1);
2501
2502 for (i = 0; i < items; ++i)
2503 PUSHs (arg [i]);
2504
2505 /* now push the callback closure */
2506 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2507
2508 /* now call the AIO function - we assume our request is uncancelable */
2509 PUTBACK;
2510 call_sv ((SV *)req, G_VOID | G_DISCARD);
2511 }
2512
2513 /* now that the requets is going, we loop toll we have a result */
2514 frame->data = (void *)state;
2515 frame->prepare = prepare_schedule;
2516 frame->check = slf_check_aio_req;
2517}
2518
2519static void
2520coro_aio_req_xs (pTHX_ CV *cv)
2521{
2522 dXSARGS;
2523
2524 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2525
2526 XSRETURN_EMPTY;
2527}
2528
2529/*****************************************************************************/
2530
1547MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2531MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1548 2532
1549PROTOTYPES: DISABLE 2533PROTOTYPES: DISABLE
1550 2534
1551BOOT: 2535BOOT:
1552{ 2536{
1553#ifdef USE_ITHREADS 2537#ifdef USE_ITHREADS
1554 MUTEX_INIT (&coro_mutex); 2538# if CORO_PTHREAD
2539 coro_thx = PERL_GET_CONTEXT;
2540# endif
1555#endif 2541#endif
1556 BOOT_PAGESIZE; 2542 BOOT_PAGESIZE;
1557 2543
1558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2544 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2545 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1560 2546
1561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2547 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1562 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2548 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1563 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2549 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1564 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1565 2550
1566 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2551 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1567 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2552 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1568 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2553 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1569 2554
… …
1578 main_top_env = PL_top_env; 2563 main_top_env = PL_top_env;
1579 2564
1580 while (main_top_env->je_prev) 2565 while (main_top_env->je_prev)
1581 main_top_env = main_top_env->je_prev; 2566 main_top_env = main_top_env->je_prev;
1582 2567
2568 {
2569 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2570
2571 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2572 hv_store_ent (PL_custom_op_names, slf,
2573 newSVpv ("coro_slf", 0), 0);
2574
2575 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2576 hv_store_ent (PL_custom_op_descs, slf,
2577 newSVpv ("coro schedule like function", 0), 0);
2578 }
2579
1583 coroapi.ver = CORO_API_VERSION; 2580 coroapi.ver = CORO_API_VERSION;
1584 coroapi.rev = CORO_API_REVISION; 2581 coroapi.rev = CORO_API_REVISION;
2582
1585 coroapi.transfer = api_transfer; 2583 coroapi.transfer = api_transfer;
2584
2585 coroapi.sv_state = SvSTATE_;
2586 coroapi.execute_slf = api_execute_slf;
2587 coroapi.prepare_nop = prepare_nop;
2588 coroapi.prepare_schedule = prepare_schedule;
2589 coroapi.prepare_cede = prepare_cede;
2590 coroapi.prepare_cede_notself = prepare_cede_notself;
2591
2592 {
2593 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2594
2595 if (!svp) croak ("Time::HiRes is required");
2596 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2597
2598 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2599 }
1586 2600
1587 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2601 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1588} 2602}
1589 2603
1590SV * 2604SV *
… …
1614 av_push (coro->args, newSVsv (ST (i))); 2628 av_push (coro->args, newSVsv (ST (i)));
1615} 2629}
1616 OUTPUT: 2630 OUTPUT:
1617 RETVAL 2631 RETVAL
1618 2632
1619# these not obviously related functions are all rolled into the same xs
1620# function to increase chances that they all will call transfer with the same
1621# stack offset
1622void 2633void
1623_set_stacklevel (...) 2634transfer (...)
1624 ALIAS: 2635 PROTOTYPE: $$
1625 Coro::State::transfer = 1 2636 CODE:
1626 Coro::schedule = 2 2637 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1627 Coro::cede = 3
1628 Coro::cede_notself = 4
1629 CODE:
1630{
1631 struct transfer_args ta;
1632
1633 PUTBACK;
1634 switch (ix)
1635 {
1636 case 0:
1637 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1638 ta.next = 0;
1639 break;
1640
1641 case 1:
1642 if (items != 2)
1643 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1644
1645 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1646 break;
1647
1648 case 2:
1649 prepare_schedule (aTHX_ &ta);
1650 break;
1651
1652 case 3:
1653 prepare_cede (aTHX_ &ta);
1654 break;
1655
1656 case 4:
1657 if (!prepare_cede_notself (aTHX_ &ta))
1658 XSRETURN_EMPTY;
1659
1660 break;
1661 }
1662 SPAGAIN;
1663
1664 BARRIER;
1665 PUTBACK;
1666 TRANSFER (ta);
1667 SPAGAIN; /* might be the sp of a different coroutine now */
1668 /* be extra careful not to ever do anything after TRANSFER */
1669}
1670 2638
1671bool 2639bool
1672_destroy (SV *coro_sv) 2640_destroy (SV *coro_sv)
1673 CODE: 2641 CODE:
1674 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2642 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1675 OUTPUT: 2643 OUTPUT:
1676 RETVAL 2644 RETVAL
1677 2645
1678void 2646void
1679_exit (code) 2647_exit (int code)
1680 int code
1681 PROTOTYPE: $ 2648 PROTOTYPE: $
1682 CODE: 2649 CODE:
1683 _exit (code); 2650 _exit (code);
1684 2651
1685int 2652int
1686cctx_stacksize (int new_stacksize = 0) 2653cctx_stacksize (int new_stacksize = 0)
2654 PROTOTYPE: ;$
1687 CODE: 2655 CODE:
1688 RETVAL = coro_stacksize; 2656 RETVAL = cctx_stacksize;
1689 if (new_stacksize) 2657 if (new_stacksize)
2658 {
1690 coro_stacksize = new_stacksize; 2659 cctx_stacksize = new_stacksize;
2660 ++cctx_gen;
2661 }
1691 OUTPUT: 2662 OUTPUT:
1692 RETVAL 2663 RETVAL
1693 2664
1694int 2665int
2666cctx_max_idle (int max_idle = 0)
2667 PROTOTYPE: ;$
2668 CODE:
2669 RETVAL = cctx_max_idle;
2670 if (max_idle > 1)
2671 cctx_max_idle = max_idle;
2672 OUTPUT:
2673 RETVAL
2674
2675int
1695cctx_count () 2676cctx_count ()
2677 PROTOTYPE:
1696 CODE: 2678 CODE:
1697 RETVAL = cctx_count; 2679 RETVAL = cctx_count;
1698 OUTPUT: 2680 OUTPUT:
1699 RETVAL 2681 RETVAL
1700 2682
1701int 2683int
1702cctx_idle () 2684cctx_idle ()
2685 PROTOTYPE:
1703 CODE: 2686 CODE:
1704 RETVAL = cctx_idle; 2687 RETVAL = cctx_idle;
1705 OUTPUT: 2688 OUTPUT:
1706 RETVAL 2689 RETVAL
1707 2690
1708void 2691void
1709list () 2692list ()
2693 PROTOTYPE:
1710 PPCODE: 2694 PPCODE:
1711{ 2695{
1712 struct coro *coro; 2696 struct coro *coro;
1713 for (coro = coro_first; coro; coro = coro->next) 2697 for (coro = coro_first; coro; coro = coro->next)
1714 if (coro->hv) 2698 if (coro->hv)
… …
1719call (Coro::State coro, SV *coderef) 2703call (Coro::State coro, SV *coderef)
1720 ALIAS: 2704 ALIAS:
1721 eval = 1 2705 eval = 1
1722 CODE: 2706 CODE:
1723{ 2707{
1724 if (coro->mainstack) 2708 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1725 { 2709 {
1726 struct coro temp; 2710 struct coro temp;
1727 2711
1728 if (!(coro->flags & CF_RUNNING)) 2712 if (!(coro->flags & CF_RUNNING))
1729 { 2713 {
… …
1773 RETVAL = boolSV (coro->flags & ix); 2757 RETVAL = boolSV (coro->flags & ix);
1774 OUTPUT: 2758 OUTPUT:
1775 RETVAL 2759 RETVAL
1776 2760
1777void 2761void
2762throw (Coro::State self, SV *throw = &PL_sv_undef)
2763 PROTOTYPE: $;$
2764 CODE:
2765{
2766 struct coro *current = SvSTATE_current;
2767 SV **throwp = self == current ? &CORO_THROW : &self->except;
2768 SvREFCNT_dec (*throwp);
2769 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2770}
2771
2772void
1778api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2773api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2774 PROTOTYPE: $;$
2775 C_ARGS: aTHX_ coro, flags
1779 2776
1780SV * 2777SV *
1781has_stack (Coro::State coro) 2778has_cctx (Coro::State coro)
1782 PROTOTYPE: $ 2779 PROTOTYPE: $
1783 CODE: 2780 CODE:
1784 RETVAL = boolSV (!!coro->cctx); 2781 RETVAL = boolSV (!!coro->cctx);
1785 OUTPUT: 2782 OUTPUT:
1786 RETVAL 2783 RETVAL
… …
1791 CODE: 2788 CODE:
1792 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2789 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1793 OUTPUT: 2790 OUTPUT:
1794 RETVAL 2791 RETVAL
1795 2792
1796IV 2793UV
1797rss (Coro::State coro) 2794rss (Coro::State coro)
1798 PROTOTYPE: $ 2795 PROTOTYPE: $
1799 ALIAS: 2796 ALIAS:
1800 usecount = 1 2797 usecount = 1
1801 CODE: 2798 CODE:
… …
1805 case 1: RETVAL = coro->usecount; break; 2802 case 1: RETVAL = coro->usecount; break;
1806 } 2803 }
1807 OUTPUT: 2804 OUTPUT:
1808 RETVAL 2805 RETVAL
1809 2806
2807void
2808force_cctx ()
2809 PROTOTYPE:
2810 CODE:
2811 SvSTATE_current->cctx->idle_sp = 0;
2812
2813void
2814swap_defsv (Coro::State self)
2815 PROTOTYPE: $
2816 ALIAS:
2817 swap_defav = 1
2818 CODE:
2819 if (!self->slot)
2820 croak ("cannot swap state with coroutine that has no saved state,");
2821 else
2822 {
2823 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2824 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2825
2826 SV *tmp = *src; *src = *dst; *dst = tmp;
2827 }
2828
1810 2829
1811MODULE = Coro::State PACKAGE = Coro 2830MODULE = Coro::State PACKAGE = Coro
1812 2831
1813BOOT: 2832BOOT:
1814{ 2833{
1815 int i; 2834 int i;
1816 2835
2836 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1817 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2837 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1818 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2838 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1819 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1820 2839
1821 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2840 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1822 SvREADONLY_on (coro_current); 2841 SvREADONLY_on (coro_current);
1823 2842
1824 coro_stash = gv_stashpv ("Coro", TRUE); 2843 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1832 2851
1833 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2852 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1834 coro_ready[i] = newAV (); 2853 coro_ready[i] = newAV ();
1835 2854
1836 { 2855 {
1837 SV *sv = perl_get_sv ("Coro::API", TRUE); 2856 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1838 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1839 2857
1840 coroapi.schedule = api_schedule; 2858 coroapi.schedule = api_schedule;
1841 coroapi.cede = api_cede; 2859 coroapi.cede = api_cede;
1842 coroapi.cede_notself = api_cede_notself; 2860 coroapi.cede_notself = api_cede_notself;
1843 coroapi.ready = api_ready; 2861 coroapi.ready = api_ready;
1844 coroapi.is_ready = api_is_ready; 2862 coroapi.is_ready = api_is_ready;
1845 coroapi.nready = &coro_nready; 2863 coroapi.nready = coro_nready;
1846 coroapi.current = coro_current; 2864 coroapi.current = coro_current;
1847 2865
1848 GCoroAPI = &coroapi; 2866 /*GCoroAPI = &coroapi;*/
1849 sv_setiv (sv, (IV)&coroapi); 2867 sv_setiv (sv, (IV)&coroapi);
1850 SvREADONLY_on (sv); 2868 SvREADONLY_on (sv);
1851 } 2869 }
1852} 2870}
2871
2872void
2873schedule (...)
2874 CODE:
2875 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2876
2877void
2878cede (...)
2879 CODE:
2880 CORO_EXECUTE_SLF_XS (slf_init_cede);
2881
2882void
2883cede_notself (...)
2884 CODE:
2885 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1853 2886
1854void 2887void
1855_set_current (SV *current) 2888_set_current (SV *current)
1856 PROTOTYPE: $ 2889 PROTOTYPE: $
1857 CODE: 2890 CODE:
1858 SvREFCNT_dec (SvRV (coro_current)); 2891 SvREFCNT_dec (SvRV (coro_current));
1859 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2892 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2893
2894void
2895_set_readyhook (SV *hook)
2896 PROTOTYPE: $
2897 CODE:
2898 SvREFCNT_dec (coro_readyhook);
2899 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1860 2900
1861int 2901int
1862prio (Coro::State coro, int newprio = 0) 2902prio (Coro::State coro, int newprio = 0)
2903 PROTOTYPE: $;$
1863 ALIAS: 2904 ALIAS:
1864 nice = 1 2905 nice = 1
1865 CODE: 2906 CODE:
1866{ 2907{
1867 RETVAL = coro->prio; 2908 RETVAL = coro->prio;
… …
1882 2923
1883SV * 2924SV *
1884ready (SV *self) 2925ready (SV *self)
1885 PROTOTYPE: $ 2926 PROTOTYPE: $
1886 CODE: 2927 CODE:
1887 RETVAL = boolSV (api_ready (self)); 2928 RETVAL = boolSV (api_ready (aTHX_ self));
1888 OUTPUT: 2929 OUTPUT:
1889 RETVAL 2930 RETVAL
1890 2931
1891int 2932int
1892nready (...) 2933nready (...)
… …
1894 CODE: 2935 CODE:
1895 RETVAL = coro_nready; 2936 RETVAL = coro_nready;
1896 OUTPUT: 2937 OUTPUT:
1897 RETVAL 2938 RETVAL
1898 2939
1899void
1900throw (Coro::State self, SV *throw = &PL_sv_undef)
1901 PROTOTYPE: $;$
1902 CODE:
1903 SvREFCNT_dec (self->throw);
1904 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1905
1906void
1907swap_defsv (Coro::State self)
1908 PROTOTYPE: $
1909 ALIAS:
1910 swap_defav = 1
1911 CODE:
1912 if (!self->slot)
1913 croak ("cannot swap state with coroutine that has no saved state");
1914 else
1915 {
1916 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1917 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1918
1919 SV *tmp = *src; *src = *dst; *dst = tmp;
1920 }
1921
1922# for async_pool speedup 2940# for async_pool speedup
1923void 2941void
1924_pool_1 (SV *cb) 2942_pool_1 (SV *cb)
1925 CODE: 2943 CODE:
1926{ 2944{
1927 struct coro *coro = SvSTATE (coro_current);
1928 HV *hv = (HV *)SvRV (coro_current); 2945 HV *hv = (HV *)SvRV (coro_current);
2946 struct coro *coro = SvSTATE_hv ((SV *)hv);
1929 AV *defav = GvAV (PL_defgv); 2947 AV *defav = GvAV (PL_defgv);
1930 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2948 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1931 AV *invoke_av; 2949 AV *invoke_av;
1932 int i, len; 2950 int i, len;
1933 2951
1934 if (!invoke) 2952 if (!invoke)
1935 { 2953 {
1936 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2954 SV *old = PL_diehook;
2955 PL_diehook = 0;
2956 SvREFCNT_dec (old);
1937 croak ("\3async_pool terminate\2\n"); 2957 croak ("\3async_pool terminate\2\n");
1938 } 2958 }
1939 2959
1940 SvREFCNT_dec (coro->saved_deffh); 2960 SvREFCNT_dec (coro->saved_deffh);
1941 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2961 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1942 2962
1943 hv_store (hv, "desc", sizeof ("desc") - 1, 2963 hv_store (hv, "desc", sizeof ("desc") - 1,
1944 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2964 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1945 2965
1946 invoke_av = (AV *)SvRV (invoke); 2966 invoke_av = (AV *)SvRV (invoke);
… …
1950 2970
1951 if (len > 0) 2971 if (len > 0)
1952 { 2972 {
1953 av_fill (defav, len - 1); 2973 av_fill (defav, len - 1);
1954 for (i = 0; i < len; ++i) 2974 for (i = 0; i < len; ++i)
1955 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2975 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1956 } 2976 }
1957
1958 SvREFCNT_dec (invoke);
1959} 2977}
1960 2978
1961void 2979void
1962_pool_2 (SV *cb) 2980_pool_2 (SV *cb)
1963 CODE: 2981 CODE:
1964{ 2982{
1965 struct coro *coro = SvSTATE (coro_current); 2983 HV *hv = (HV *)SvRV (coro_current);
2984 struct coro *coro = SvSTATE_hv ((SV *)hv);
1966 2985
1967 sv_setsv (cb, &PL_sv_undef); 2986 sv_setsv (cb, &PL_sv_undef);
1968 2987
1969 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2988 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1970 coro->saved_deffh = 0; 2989 coro->saved_deffh = 0;
1971 2990
1972 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2991 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1973 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2992 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1974 { 2993 {
1975 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2994 SV *old = PL_diehook;
2995 PL_diehook = 0;
2996 SvREFCNT_dec (old);
1976 croak ("\3async_pool terminate\2\n"); 2997 croak ("\3async_pool terminate\2\n");
1977 } 2998 }
1978 2999
1979 av_clear (GvAV (PL_defgv)); 3000 av_clear (GvAV (PL_defgv));
1980 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3001 hv_store (hv, "desc", sizeof ("desc") - 1,
1981 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3002 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1982 3003
1983 coro->prio = 0; 3004 coro->prio = 0;
1984 3005
1985 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3006 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1986 api_trace (coro_current, 0); 3007 api_trace (aTHX_ coro_current, 0);
1987 3008
1988 av_push (av_async_pool, newSVsv (coro_current)); 3009 av_push (av_async_pool, newSVsv (coro_current));
1989} 3010}
1990 3011
1991
1992MODULE = Coro::State PACKAGE = Coro::AIO
1993
1994SV * 3012SV *
1995_get_state () 3013rouse_cb ()
3014 PROTOTYPE:
1996 CODE: 3015 CODE:
1997{ 3016 RETVAL = coro_new_rouse_cb (aTHX);
1998 struct io_state *data;
1999
2000 RETVAL = newSV (sizeof (struct io_state));
2001 data = (struct io_state *)SvPVX (RETVAL);
2002 SvCUR_set (RETVAL, sizeof (struct io_state));
2003 SvPOK_only (RETVAL);
2004
2005 data->errorno = errno;
2006 data->laststype = PL_laststype;
2007 data->laststatval = PL_laststatval;
2008 data->statcache = PL_statcache;
2009}
2010 OUTPUT: 3017 OUTPUT:
2011 RETVAL 3018 RETVAL
2012 3019
2013void 3020void
2014_set_state (char *data_) 3021rouse_wait (...)
2015 PROTOTYPE: $ 3022 PROTOTYPE: ;$
3023 PPCODE:
3024 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3025
3026
3027MODULE = Coro::State PACKAGE = PerlIO::cede
3028
3029BOOT:
3030 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3031
3032
3033MODULE = Coro::State PACKAGE = Coro::Semaphore
3034
3035SV *
3036new (SV *klass, SV *count = 0)
2016 CODE: 3037 CODE:
2017{ 3038 RETVAL = sv_bless (
2018 struct io_state *data = (void *)data_; 3039 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3040 GvSTASH (CvGV (cv))
3041 );
3042 OUTPUT:
3043 RETVAL
2019 3044
2020 errno = data->errorno; 3045# helper for Coro::Channel
2021 PL_laststype = data->laststype; 3046SV *
2022 PL_laststatval = data->laststatval; 3047_alloc (int count)
2023 PL_statcache = data->statcache; 3048 CODE:
2024} 3049 RETVAL = coro_waitarray_new (aTHX_ count);
3050 OUTPUT:
3051 RETVAL
2025 3052
3053SV *
3054count (SV *self)
3055 CODE:
3056 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3057 OUTPUT:
3058 RETVAL
3059
3060void
3061up (SV *self, int adjust = 1)
3062 ALIAS:
3063 adjust = 1
3064 CODE:
3065 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3066
3067void
3068down (...)
3069 CODE:
3070 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3071
3072void
3073wait (...)
3074 CODE:
3075 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3076
3077void
3078try (SV *self)
3079 PPCODE:
3080{
3081 AV *av = (AV *)SvRV (self);
3082 SV *count_sv = AvARRAY (av)[0];
3083 IV count = SvIVX (count_sv);
3084
3085 if (count > 0)
3086 {
3087 --count;
3088 SvIVX (count_sv) = count;
3089 XSRETURN_YES;
3090 }
3091 else
3092 XSRETURN_NO;
3093}
3094
3095void
3096waiters (SV *self)
3097 PPCODE:
3098{
3099 AV *av = (AV *)SvRV (self);
3100 int wcount = AvFILLp (av) + 1 - 1;
3101
3102 if (GIMME_V == G_SCALAR)
3103 XPUSHs (sv_2mortal (newSViv (wcount)));
3104 else
3105 {
3106 int i;
3107 EXTEND (SP, wcount);
3108 for (i = 1; i <= wcount; ++i)
3109 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3110 }
3111}
3112
3113MODULE = Coro::State PACKAGE = Coro::Signal
3114
3115SV *
3116new (SV *klass)
3117 CODE:
3118 RETVAL = sv_bless (
3119 coro_waitarray_new (aTHX_ 0),
3120 GvSTASH (CvGV (cv))
3121 );
3122 OUTPUT:
3123 RETVAL
3124
3125void
3126wait (...)
3127 CODE:
3128 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3129
3130void
3131broadcast (SV *self)
3132 CODE:
3133{
3134 AV *av = (AV *)SvRV (self);
3135 coro_signal_wake (aTHX_ av, AvFILLp (av));
3136}
3137
3138void
3139send (SV *self)
3140 CODE:
3141{
3142 AV *av = (AV *)SvRV (self);
3143
3144 if (AvFILLp (av))
3145 coro_signal_wake (aTHX_ av, 1);
3146 else
3147 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3148}
3149
3150IV
3151awaited (SV *self)
3152 CODE:
3153 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3154 OUTPUT:
3155 RETVAL
3156
3157
3158MODULE = Coro::State PACKAGE = Coro::AnyEvent
3159
3160BOOT:
3161 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3162
3163void
3164_schedule (...)
3165 CODE:
3166{
3167 static int incede;
3168
3169 api_cede_notself (aTHX);
3170
3171 ++incede;
3172 while (coro_nready >= incede && api_cede (aTHX))
3173 ;
3174
3175 sv_setsv (sv_activity, &PL_sv_undef);
3176 if (coro_nready >= incede)
3177 {
3178 PUSHMARK (SP);
3179 PUTBACK;
3180 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3181 }
3182
3183 --incede;
3184}
3185
3186
3187MODULE = Coro::State PACKAGE = Coro::AIO
3188
3189void
3190_register (char *target, char *proto, SV *req)
3191 CODE:
3192{
3193 HV *st;
3194 GV *gvp;
3195 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3196 /* newXSproto doesn't return the CV on 5.8 */
3197 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3198 sv_setpv ((SV *)slf_cv, proto);
3199 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3200}
3201

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