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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC vs.
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
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
85/* 5.11 */
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif
89
90/* 5.8.7 */ 101/* 5.8.7 */
91#ifndef SvRV_set 102#ifndef SvRV_set
92# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
93#endif 104#endif
94 105
… …
105# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
106#endif 117#endif
107 118
108/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
109 * portable way as possible. */ 120 * portable way as possible. */
110#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
111#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
112 126
113#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
114 128
115#if __GNUC__ >= 3 129#if __GNUC__ >= 3
116# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
117# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
119#else 133#else
120# define attribute(x) 134# define attribute(x)
121# define BARRIER
122# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
123#endif 137#endif
124 138
125#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
126#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
127 141
128#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
129 143
130#include "CoroAPI.h" 144#include "CoroAPI.h"
131 145
132#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
133static perl_mutex coro_mutex; 147# if CORO_PTHREAD
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static 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 149# endif
150#endif
140 151
141/* helper storage struct for Coro::AIO */ 152static 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};
149 153
154static U32 cctx_gen;
150static size_t coro_stacksize = CORO_STACKSIZE; 155static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 156static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 157static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 158static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 159static HV *coro_state_stash, *coro_stash;
155static volatile SV *coro_mortal; /* will be freed after next transfer */ 160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
156 161
157static GV *irsgv; /* $/ */ 162static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 163static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 164static SV *rv_diehook;
160static SV *rv_warnhook; 165static SV *rv_warnhook;
… …
162 167
163/* async_pool helper stuff */ 168/* async_pool helper stuff */
164static SV *sv_pool_rss; 169static SV *sv_pool_rss;
165static SV *sv_pool_size; 170static SV *sv_pool_size;
166static AV *av_async_pool; 171static AV *av_async_pool;
172
173/* Coro::AnyEvent */
174static SV *sv_activity;
167 175
168static struct coro_cctx *cctx_first; 176static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 177static int cctx_count, cctx_idle;
170 178
171enum { 179enum {
… …
176 CC_TRACE_LINE = 0x10, /* trace each statement */ 184 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 185 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178}; 186};
179 187
180/* this is a structure representing a c-level coroutine */ 188/* this is a structure representing a c-level coroutine */
181typedef struct coro_cctx { 189typedef struct coro_cctx
190{
182 struct coro_cctx *next; 191 struct coro_cctx *next;
183 192
184 /* the stack */ 193 /* the stack */
185 void *sptr; 194 void *sptr;
186 size_t ssize; 195 size_t ssize;
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 198 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 */ 199 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
191 JMPENV *top_env; 200 JMPENV *top_env;
192 coro_context cctx; 201 coro_context cctx;
193 202
203 U32 gen;
194#if CORO_USE_VALGRIND 204#if CORO_USE_VALGRIND
195 int valgrind_id; 205 int valgrind_id;
196#endif 206#endif
197 unsigned char flags; 207 unsigned char flags;
198} coro_cctx; 208} coro_cctx;
… …
203 CF_NEW = 0x0004, /* has never been switched to */ 213 CF_NEW = 0x0004, /* has never been switched to */
204 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 214 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
205}; 215};
206 216
207/* the structure where most of the perl state is stored, overlaid on the cxstack */ 217/* the structure where most of the perl state is stored, overlaid on the cxstack */
208typedef struct { 218typedef struct
219{
209 SV *defsv; 220 SV *defsv;
210 AV *defav; 221 AV *defav;
211 SV *errsv; 222 SV *errsv;
212 SV *irsgv; 223 SV *irsgv;
213#define VAR(name,type) type name; 224#define VAR(name,type) type name;
… …
217 228
218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
219 230
220/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
221struct coro { 232struct coro {
222 /* the c coroutine allocated to this perl coroutine, if any */ 233 /* the C coroutine allocated to this perl coroutine, if any */
223 coro_cctx *cctx; 234 coro_cctx *cctx;
224 235
225 /* process data */ 236 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */
226 AV *mainstack; 238 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */ 239 perl_slots *slot; /* basically the saved sp */
228 240
229 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
230 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
231 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
232 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
233 246
234 /* statistics */ 247 /* statistics */
235 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
236 249
237 /* coro process data */ 250 /* coro process data */
… …
245 struct coro *next, *prev; 258 struct coro *next, *prev;
246}; 259};
247 260
248typedef struct coro *Coro__State; 261typedef struct coro *Coro__State;
249typedef struct coro *Coro__State_or_hashref; 262typedef struct coro *Coro__State_or_hashref;
263
264/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
250 269
251/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
252 271
253#define PRIO_MAX 3 272#define PRIO_MAX 3
254#define PRIO_HIGH 1 273#define PRIO_HIGH 1
… …
257#define PRIO_IDLE -3 276#define PRIO_IDLE -3
258#define PRIO_MIN -4 277#define PRIO_MIN -4
259 278
260/* for Coro.pm */ 279/* for Coro.pm */
261static SV *coro_current; 280static SV *coro_current;
281static SV *coro_readyhook;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 282static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263static int coro_nready;
264static struct coro *coro_first; 283static struct coro *coro_first;
284#define coro_nready coroapi.nready
265 285
266/** lowlevel stuff **********************************************************/ 286/** lowlevel stuff **********************************************************/
267 287
268static SV * 288static SV *
269coro_get_sv (pTHX_ const char *name, int create) 289coro_get_sv (pTHX_ const char *name, int create)
270{ 290{
271#if PERL_VERSION_ATLEAST (5,9,0) 291#if PERL_VERSION_ATLEAST (5,10,0)
272 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
273 get_sv (name, create); 293 get_sv (name, create);
274#endif 294#endif
275 return get_sv (name, create); 295 return get_sv (name, create);
276} 296}
277 297
278static AV * 298static AV *
279coro_get_av (pTHX_ const char *name, int create) 299coro_get_av (pTHX_ const char *name, int create)
280{ 300{
281#if PERL_VERSION_ATLEAST (5,9,0) 301#if PERL_VERSION_ATLEAST (5,10,0)
282 /* 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 */
283 get_av (name, create); 303 get_av (name, create);
284#endif 304#endif
285 return get_av (name, create); 305 return get_av (name, create);
286} 306}
287 307
288static HV * 308static HV *
289coro_get_hv (pTHX_ const char *name, int create) 309coro_get_hv (pTHX_ const char *name, int create)
290{ 310{
291#if PERL_VERSION_ATLEAST (5,9,0) 311#if PERL_VERSION_ATLEAST (5,10,0)
292 /* 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 */
293 get_hv (name, create); 313 get_hv (name, create);
294#endif 314#endif
295 return get_hv (name, create); 315 return get_hv (name, create);
296} 316}
… …
301 AV *padlist = CvPADLIST (cv); 321 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 322 AV *newpadlist, *newpad;
303 323
304 newpadlist = newAV (); 324 newpadlist = newAV ();
305 AvREAL_off (newpadlist); 325 AvREAL_off (newpadlist);
306#if PERL_VERSION_ATLEAST (5,9,0) 326#if PERL_VERSION_ATLEAST (5,10,0)
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 327 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308#else 328#else
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 329 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 330#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 331 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 332 --AvFILLp (padlist);
313 333
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 334 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315 av_store (newpadlist, 1, (SV *)newpad); 335 av_store (newpadlist, 1, (SV *)newpad);
316 336
317 return newpadlist; 337 return newpadlist;
318} 338}
319 339
… …
349 369
350 /* casting is fun. */ 370 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 371 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 372 free_padlist (aTHX_ padlist);
353 373
374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
375
354 return 0; 376 return 0;
355} 377}
356 378
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext 379#define CORO_MAGIC_type_cv 26
358#define CORO_MAGIC_type_state PERL_MAGIC_ext 380#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 381
360static MGVTBL coro_cv_vtbl = { 382static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 383 0, 0, 0, 0,
362 coro_cv_free 384 coro_cv_free
363}; 385};
364 386
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
365#define CORO_MAGIC(sv,type) \ 392#define CORO_MAGIC(sv, type) \
366 SvMAGIC (sv) \ 393 (expect_true (SvMAGIC (sv)) \
367 ? SvMAGIC (sv)->mg_type == type \ 394 ? CORO_MAGIC_NN (sv, type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \
370 : 0 395 : 0)
371 396
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 397#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) 398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
374 399
375static struct coro * 400INLINE struct coro *
376SvSTATE_ (pTHX_ SV *coro) 401SvSTATE_ (pTHX_ SV *coro)
377{ 402{
378 HV *stash; 403 HV *stash;
379 MAGIC *mg; 404 MAGIC *mg;
380 405
… …
395 mg = CORO_MAGIC_state (coro); 420 mg = CORO_MAGIC_state (coro);
396 return (struct coro *)mg->mg_ptr; 421 return (struct coro *)mg->mg_ptr;
397} 422}
398 423
399#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
400 429
401/* the next two functions merely cache the padlists */ 430/* the next two functions merely cache the padlists */
402static void 431static void
403get_padlist (pTHX_ CV *cv) 432get_padlist (pTHX_ CV *cv)
404{ 433{
… …
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 439 else
411 { 440 {
412#if CORO_PREFER_PERL_FUNCTIONS 441#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 442 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 444 CV *cp = Perl_cv_clone (cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 445 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 446 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 447 SvREFCNT_dec (cp);
418#else 448#else
… …
470 CvPADLIST (cv) = (AV *)POPs; 500 CvPADLIST (cv) = (AV *)POPs;
471 } 501 }
472 502
473 PUTBACK; 503 PUTBACK;
474 } 504 }
505
506 slf_frame = c->slf_frame;
507 coro_throw = c->throw;
475} 508}
476 509
477static void 510static void
478save_perl (pTHX_ Coro__State c) 511save_perl (pTHX_ Coro__State c)
479{ 512{
513 c->throw = coro_throw;
514 c->slf_frame = slf_frame;
515
480 { 516 {
481 dSP; 517 dSP;
482 I32 cxix = cxstack_ix; 518 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 519 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 520 PERL_SI *top_si = PL_curstackinfo;
… …
502 538
503 if (expect_true (CvDEPTH (cv))) 539 if (expect_true (CvDEPTH (cv)))
504 { 540 {
505 EXTEND (SP, 3); 541 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 542 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 543 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 544 PUSHs ((SV *)cv);
509 545
510 CvDEPTH (cv) = 0; 546 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 547 get_padlist (aTHX_ cv);
512 } 548 }
… …
551 #undef VAR 587 #undef VAR
552 } 588 }
553} 589}
554 590
555/* 591/*
556 * allocate various perl stacks. This is an exact copy 592 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 593 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 594 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 595 * not usually need a lot of stackspace.
560 */ 596 */
561#if CORO_PREFER_PERL_FUNCTIONS 597#if CORO_PREFER_PERL_FUNCTIONS
… …
592 628
593 New(54,PL_savestack,24,ANY); 629 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 630 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 631 PL_savestack_max = 24;
596 632
597#if !PERL_VERSION_ATLEAST (5,9,0) 633#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 634 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 635 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 636 PL_retstack_max = 4;
601#endif 637#endif
602} 638}
… …
604 640
605/* 641/*
606 * destroy the stacks, the callchain etc... 642 * destroy the stacks, the callchain etc...
607 */ 643 */
608static void 644static void
609coro_destroy_stacks (pTHX) 645coro_destruct_stacks (pTHX)
610{ 646{
611 while (PL_curstackinfo->si_next) 647 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 648 PL_curstackinfo = PL_curstackinfo->si_next;
613 649
614 while (PL_curstackinfo) 650 while (PL_curstackinfo)
… …
625 661
626 Safefree (PL_tmps_stack); 662 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 663 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 664 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 665 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 666#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 667 Safefree (PL_retstack);
632#endif 668#endif
633} 669}
634 670
635static size_t 671static size_t
… …
651 #undef VAR 687 #undef VAR
652 } 688 }
653 else 689 else
654 slot = coro->slot; 690 slot = coro->slot;
655 691
692 if (slot)
693 {
656 rss += sizeof (slot->curstackinfo); 694 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 695 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 696 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 697 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 698 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 699 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 700 rss += slot->savestack_max * sizeof (ANY);
663 701
664#if !PERL_VERSION_ATLEAST (5,9,0) 702#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 703 rss += slot->retstack_max * sizeof (OP *);
666#endif 704#endif
705 }
667 } 706 }
668 707
669 return rss; 708 return rss;
670} 709}
671 710
672/** coroutine stack handling ************************************************/ 711/** coroutine stack handling ************************************************/
673 712
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 713static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 714static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
715static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
716
717/* apparently < 5.8.8 */
718#ifndef MgPV_nolen_const
719#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
720 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
721 (const char*)(mg)->mg_ptr)
722#endif
676 723
677/* 724/*
678 * This overrides the default magic get method of %SIG elements. 725 * 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 726 * 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 727 * and instead of tryign to save and restore the hash elements, we just provide
… …
688{ 735{
689 const char *s = MgPV_nolen_const (mg); 736 const char *s = MgPV_nolen_const (mg);
690 737
691 if (*s == '_') 738 if (*s == '_')
692 { 739 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 740 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 741
742 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
743 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
744
745 if (svp)
746 {
747 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
748 return 0;
749 }
695 } 750 }
696 751
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 752 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
753}
754
755static int
756coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
757{
758 const char *s = MgPV_nolen_const (mg);
759
760 if (*s == '_')
761 {
762 SV **svp = 0;
763
764 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
765 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
766
767 if (svp)
768 {
769 SV *old = *svp;
770 *svp = 0;
771 SvREFCNT_dec (old);
772 return 0;
773 }
774 }
775
776 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698} 777}
699 778
700static int 779static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 780coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702{ 781{
… …
712 if (svp) 791 if (svp)
713 { 792 {
714 SV *old = *svp; 793 SV *old = *svp;
715 *svp = newSVsv (sv); 794 *svp = newSVsv (sv);
716 SvREFCNT_dec (old); 795 SvREFCNT_dec (old);
717 return; 796 return 0;
718 } 797 }
719 } 798 }
720 799
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 800 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722} 801}
723 802
724static void 803static void
804prepare_nop (pTHX_ struct coro_transfer_args *ta)
805{
806 /* kind of mega-hacky, but works */
807 ta->next = ta->prev = (struct coro *)ta;
808}
809
810static int
811slf_check_nop (pTHX_ struct CoroSLF *frame)
812{
813 return 0;
814}
815
816static void NOINLINE /* noinline to keep it out of the transfer fast path */
725coro_setup (pTHX_ struct coro *coro) 817coro_setup (pTHX_ struct coro *coro)
726{ 818{
727 /* 819 /*
728 * emulate part of the perl startup here. 820 * emulate part of the perl startup here.
729 */ 821 */
… …
736 PL_curpm = 0; 828 PL_curpm = 0;
737 PL_curpad = 0; 829 PL_curpad = 0;
738 PL_localizing = 0; 830 PL_localizing = 0;
739 PL_dirty = 0; 831 PL_dirty = 0;
740 PL_restartop = 0; 832 PL_restartop = 0;
833#if PERL_VERSION_ATLEAST (5,10,0)
834 PL_parser = 0;
835#endif
741 836
742 /* recreate the die/warn hooks */ 837 /* recreate the die/warn hooks */
743 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 838 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); 839 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745 840
746 GvSV (PL_defgv) = newSV (0); 841 GvSV (PL_defgv) = newSV (0);
747 GvAV (PL_defgv) = coro->args; coro->args = 0; 842 GvAV (PL_defgv) = coro->args; coro->args = 0;
748 GvSV (PL_errgv) = newSV (0); 843 GvSV (PL_errgv) = newSV (0);
749 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 844 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
750 PL_rs = newSVsv (GvSV (irsgv)); 845 PL_rs = newSVsv (GvSV (irsgv));
751 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752 847
753 { 848 {
754 dSP; 849 dSP;
755 LOGOP myop; 850 UNOP myop;
756 851
757 Zero (&myop, 1, LOGOP); 852 Zero (&myop, 1, UNOP);
758 myop.op_next = Nullop; 853 myop.op_next = Nullop;
759 myop.op_flags = OPf_WANT_VOID; 854 myop.op_flags = OPf_WANT_VOID;
760 855
761 PUSHMARK (SP); 856 PUSHMARK (SP);
762 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
765 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
766 SPAGAIN; 861 SPAGAIN;
767 } 862 }
768 863
769 /* this newly created coroutine might be run on an existing cctx which most 864 /* this newly created coroutine might be run on an existing cctx which most
770 * likely was suspended in set_stacklevel, called from entersub. 865 * 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 */ 866 */
774 ENTER; 867 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
775} 868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
776 869
870 coro_throw = coro->throw;
871}
872
777static void 873static void
778coro_destroy (pTHX_ struct coro *coro) 874coro_destruct (pTHX_ struct coro *coro)
779{ 875{
780 if (!IN_DESTRUCT) 876 if (!IN_DESTRUCT)
781 { 877 {
782 /* restore all saved variables and stuff */ 878 /* restore all saved variables and stuff */
783 LEAVE_SCOPE (0); 879 LEAVE_SCOPE (0);
… …
803 899
804 SvREFCNT_dec (PL_diehook); 900 SvREFCNT_dec (PL_diehook);
805 SvREFCNT_dec (PL_warnhook); 901 SvREFCNT_dec (PL_warnhook);
806 902
807 SvREFCNT_dec (coro->saved_deffh); 903 SvREFCNT_dec (coro->saved_deffh);
808 SvREFCNT_dec (coro->throw); 904 SvREFCNT_dec (coro_throw);
809 905
810 coro_destroy_stacks (aTHX); 906 coro_destruct_stacks (aTHX);
811} 907}
812 908
813static void 909INLINE void
814free_coro_mortal (pTHX) 910free_coro_mortal (pTHX)
815{ 911{
816 if (expect_true (coro_mortal)) 912 if (expect_true (coro_mortal))
817 { 913 {
818 SvREFCNT_dec (coro_mortal); 914 SvREFCNT_dec (coro_mortal);
… …
823static int 919static int
824runops_trace (pTHX) 920runops_trace (pTHX)
825{ 921{
826 COP *oldcop = 0; 922 COP *oldcop = 0;
827 int oldcxix = -2; 923 int oldcxix = -2;
828 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
829 coro_cctx *cctx = coro->cctx; 925 coro_cctx *cctx = coro->cctx;
830 926
831 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
832 { 928 {
833 PERL_ASYNC_CHECK (); 929 PERL_ASYNC_CHECK ();
… …
852 : cx->blk_gimme == G_SCALAR ? bot + 1 948 : cx->blk_gimme == G_SCALAR ? bot + 1
853 : bot; 949 : bot;
854 950
855 av_extend (av, top - bot); 951 av_extend (av, top - bot);
856 while (bot < top) 952 while (bot < top)
857 av_push (av, SvREFCNT_inc (*bot++)); 953 av_push (av, SvREFCNT_inc_NN (*bot++));
858 954
859 PL_runops = RUNOPS_DEFAULT; 955 PL_runops = RUNOPS_DEFAULT;
860 ENTER; 956 ENTER;
861 SAVETMPS; 957 SAVETMPS;
862 EXTEND (SP, 3); 958 EXTEND (SP, 3);
… …
942 1038
943 TAINT_NOT; 1039 TAINT_NOT;
944 return 0; 1040 return 0;
945} 1041}
946 1042
1043static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1045{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0;
1048}
1049
947/* inject a fake call to Coro::State::_cctx_init into the execution */ 1050/* inject a fake call to Coro::State::_cctx_init into the execution */
948/* _cctx_init should be careful, as it could be called at almost any time */ 1051/* _cctx_init should be careful, as it could be called at almost any time */
949/* during execution of a perl program */ 1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
950static void NOINLINE 1054static void NOINLINE
951cctx_prepare (pTHX_ coro_cctx *cctx) 1055cctx_prepare (pTHX_ coro_cctx *cctx)
952{ 1056{
953 dSP; 1057 dSP;
954 LOGOP myop; 1058 UNOP myop;
955 1059
956 PL_top_env = &PL_start_env; 1060 PL_top_env = &PL_start_env;
957 1061
958 if (cctx->flags & CC_TRACE) 1062 if (cctx->flags & CC_TRACE)
959 PL_runops = runops_trace; 1063 PL_runops = runops_trace;
960 1064
961 Zero (&myop, 1, LOGOP); 1065 Zero (&myop, 1, UNOP);
962 myop.op_next = PL_op; 1066 myop.op_next = PL_op;
963 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1067 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
964 1068
965 PUSHMARK (SP); 1069 PUSHMARK (SP);
966 EXTEND (SP, 2); 1070 EXTEND (SP, 2);
967 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1071 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
968 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
969 PUTBACK; 1073 PUTBACK;
970 PL_op = (OP *)&myop; 1074 PL_op = (OP *)&myop;
971 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
972 SPAGAIN; 1076 SPAGAIN;
973} 1077}
974 1078
1079/* the tail of transfer: execute stuff we can only do after a transfer */
1080INLINE void
1081transfer_tail (pTHX)
1082{
1083 free_coro_mortal (aTHX);
1084}
1085
975/* 1086/*
976 * this is a _very_ stripped down perl interpreter ;) 1087 * this is a _very_ stripped down perl interpreter ;)
977 */ 1088 */
978static void 1089static void
979cctx_run (void *arg) 1090cctx_run (void *arg)
980{ 1091{
1092#ifdef USE_ITHREADS
1093# if CORO_PTHREAD
1094 PERL_SET_CONTEXT (coro_thx);
1095# endif
1096#endif
1097 {
981 dTHX; 1098 dTHX;
982 1099
983 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1100 /* normally we would need to skip the entersub here */
984 UNLOCK; 1101 /* 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; 1102 /* PL_nop = PL_nop->op_next */
988 1103
989 /* inject a fake subroutine call to cctx_init */ 1104 /* inject a fake subroutine call to cctx_init */
990 cctx_prepare (aTHX_ (coro_cctx *)arg); 1105 cctx_prepare (aTHX_ (coro_cctx *)arg);
991 1106
1107 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX);
1109
992 /* somebody or something will hit me for both perl_run and PL_restartop */ 1110 /* somebody or something will hit me for both perl_run and PL_restartop */
993 PL_restartop = PL_op; 1111 PL_restartop = PL_op;
994 perl_run (PL_curinterp); 1112 perl_run (PL_curinterp);
995 1113
996 /* 1114 /*
997 * If perl-run returns we assume exit() was being called or the coro 1115 * 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) 1116 * 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 1117 * 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" 1118 * bootstrap-time "top" top_env, as we cannot restore the "main"
1001 * coroutine as Coro has no such concept 1119 * coroutine as Coro has no such concept
1002 */ 1120 */
1003 PL_top_env = main_top_env; 1121 PL_top_env = main_top_env;
1004 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 }
1005} 1124}
1006 1125
1007static coro_cctx * 1126static coro_cctx *
1008cctx_new () 1127cctx_new ()
1009{ 1128{
1010 coro_cctx *cctx; 1129 coro_cctx *cctx;
1130
1131 ++cctx_count;
1132 New (0, cctx, 1, coro_cctx);
1133
1134 cctx->gen = cctx_gen;
1135 cctx->flags = 0;
1136 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1137
1138 return cctx;
1139}
1140
1141/* create a new cctx only suitable as source */
1142static coro_cctx *
1143cctx_new_empty ()
1144{
1145 coro_cctx *cctx = cctx_new ();
1146
1147 cctx->sptr = 0;
1148 coro_create (&cctx->cctx, 0, 0, 0, 0);
1149
1150 return cctx;
1151}
1152
1153/* create a new cctx suitable as destination/running a perl interpreter */
1154static coro_cctx *
1155cctx_new_run ()
1156{
1157 coro_cctx *cctx = cctx_new ();
1011 void *stack_start; 1158 void *stack_start;
1012 size_t stack_size; 1159 size_t stack_size;
1013 1160
1014 ++cctx_count;
1015
1016 Newz (0, cctx, 1, coro_cctx);
1017
1018#if HAVE_MMAP 1161#if HAVE_MMAP
1019 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1162 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020 /* mmap supposedly does allocate-on-write for us */ 1163 /* 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); 1164 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1022 1165
1023 if (cctx->sptr != (void *)-1) 1166 if (cctx->sptr != (void *)-1)
1024 { 1167 {
1025# if CORO_STACKGUARD 1168 #if CORO_STACKGUARD
1026 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1169 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027# endif 1170 #endif
1028 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1171 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1029 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1172 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030 cctx->flags |= CC_MAPPED; 1173 cctx->flags |= CC_MAPPED;
1031 } 1174 }
1032 else 1175 else
1033#endif 1176#endif
1034 { 1177 {
1035 cctx->ssize = coro_stacksize * (long)sizeof (long); 1178 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036 New (0, cctx->sptr, coro_stacksize, long); 1179 New (0, cctx->sptr, cctx_stacksize, long);
1037 1180
1038 if (!cctx->sptr) 1181 if (!cctx->sptr)
1039 { 1182 {
1040 perror ("FATAL: unable to allocate stack for coroutine"); 1183 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041 _exit (EXIT_FAILURE); 1184 _exit (EXIT_FAILURE);
1042 } 1185 }
1043 1186
1044 stack_start = cctx->sptr; 1187 stack_start = cctx->sptr;
1045 stack_size = cctx->ssize; 1188 stack_size = cctx->ssize;
1046 } 1189 }
1047 1190
1048 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1191 #if CORO_USE_VALGRIND
1192 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1193 #endif
1194
1049 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1195 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050 1196
1051 return cctx; 1197 return cctx;
1052} 1198}
1053 1199
… …
1056{ 1202{
1057 if (!cctx) 1203 if (!cctx)
1058 return; 1204 return;
1059 1205
1060 --cctx_count; 1206 --cctx_count;
1207 coro_destroy (&cctx->cctx);
1061 1208
1209 /* coro_transfer creates new, empty cctx's */
1210 if (cctx->sptr)
1211 {
1062#if CORO_USE_VALGRIND 1212 #if CORO_USE_VALGRIND
1063 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1213 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1064#endif 1214 #endif
1065 1215
1066#if HAVE_MMAP 1216#if HAVE_MMAP
1067 if (cctx->flags & CC_MAPPED) 1217 if (cctx->flags & CC_MAPPED)
1068 munmap (cctx->sptr, cctx->ssize); 1218 munmap (cctx->sptr, cctx->ssize);
1069 else 1219 else
1070#endif 1220#endif
1071 Safefree (cctx->sptr); 1221 Safefree (cctx->sptr);
1222 }
1072 1223
1073 Safefree (cctx); 1224 Safefree (cctx);
1074} 1225}
1075 1226
1076/* wether this cctx should be destructed */ 1227/* wether this cctx should be destructed */
1077#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1228#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1078 1229
1079static coro_cctx * 1230static coro_cctx *
1080cctx_get (pTHX) 1231cctx_get (pTHX)
1081{ 1232{
1082 while (expect_true (cctx_first)) 1233 while (expect_true (cctx_first))
… …
1089 return cctx; 1240 return cctx;
1090 1241
1091 cctx_destroy (cctx); 1242 cctx_destroy (cctx);
1092 } 1243 }
1093 1244
1094 return cctx_new (); 1245 return cctx_new_run ();
1095} 1246}
1096 1247
1097static void 1248static void
1098cctx_put (coro_cctx *cctx) 1249cctx_put (coro_cctx *cctx)
1099{ 1250{
1251 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1252
1100 /* free another cctx if overlimit */ 1253 /* free another cctx if overlimit */
1101 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1254 if (expect_false (cctx_idle >= cctx_max_idle))
1102 { 1255 {
1103 coro_cctx *first = cctx_first; 1256 coro_cctx *first = cctx_first;
1104 cctx_first = first->next; 1257 cctx_first = first->next;
1105 --cctx_idle; 1258 --cctx_idle;
1106 1259
… …
1115/** coroutine switching *****************************************************/ 1268/** coroutine switching *****************************************************/
1116 1269
1117static void 1270static void
1118transfer_check (pTHX_ struct coro *prev, struct coro *next) 1271transfer_check (pTHX_ struct coro *prev, struct coro *next)
1119{ 1272{
1273 /* TODO: throwing up here is considered harmful */
1274
1120 if (expect_true (prev != next)) 1275 if (expect_true (prev != next))
1121 { 1276 {
1122 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1277 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"); 1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1124 1279
1125 if (expect_false (next->flags & CF_RUNNING)) 1280 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"); 1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1127 1282
1128 if (expect_false (next->flags & CF_DESTROYED)) 1283 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"); 1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1130 1285
1131 if (
1132#if PERL_VERSION_ATLEAST (5,9,0) 1286#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) 1287 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136#endif
1137 )
1138 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1289#endif
1139 } 1290 }
1140} 1291}
1141 1292
1142/* always use the TRANSFER macro */ 1293/* always use the TRANSFER macro */
1143static void NOINLINE 1294static void NOINLINE /* noinline so we have a fixed stackframe */
1144transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1145{ 1296{
1146 dSTACKLEVEL; 1297 dSTACKLEVEL;
1147 static volatile int has_throw;
1148 1298
1149 /* sometimes transfer is only called to set idle_sp */ 1299 /* sometimes transfer is only called to set idle_sp */
1150 if (expect_false (!next)) 1300 if (expect_false (!next))
1151 { 1301 {
1152 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1153 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1154 } 1304 }
1155 else if (expect_true (prev != next)) 1305 else if (expect_true (prev != next))
1156 { 1306 {
1157 coro_cctx *prev__cctx; 1307 coro_cctx *prev__cctx;
1158 1308
1159 if (expect_false (prev->flags & CF_NEW)) 1309 if (expect_false (prev->flags & CF_NEW))
1160 { 1310 {
1161 /* create a new empty context */ 1311 /* create a new empty/source context */
1162 Newz (0, prev->cctx, 1, coro_cctx); 1312 prev->cctx = cctx_new_empty ();
1163 prev->flags &= ~CF_NEW; 1313 prev->flags &= ~CF_NEW;
1164 prev->flags |= CF_RUNNING; 1314 prev->flags |= CF_RUNNING;
1165 } 1315 }
1166 1316
1167 prev->flags &= ~CF_RUNNING; 1317 prev->flags &= ~CF_RUNNING;
1168 next->flags |= CF_RUNNING; 1318 next->flags |= CF_RUNNING;
1169
1170 LOCK;
1171 1319
1172 /* first get rid of the old state */ 1320 /* first get rid of the old state */
1173 save_perl (aTHX_ prev); 1321 save_perl (aTHX_ prev);
1174 1322
1175 if (expect_false (next->flags & CF_NEW)) 1323 if (expect_false (next->flags & CF_NEW))
… …
1182 else 1330 else
1183 load_perl (aTHX_ next); 1331 load_perl (aTHX_ next);
1184 1332
1185 prev__cctx = prev->cctx; 1333 prev__cctx = prev->cctx;
1186 1334
1187 /* possibly "free" the cctx */ 1335 /* possibly untie and reuse the cctx */
1188 if (expect_true ( 1336 if (expect_true (
1189 prev__cctx->idle_sp == STACKLEVEL 1337 prev__cctx->idle_sp == (void *)stacklevel
1190 && !(prev__cctx->flags & CC_TRACE) 1338 && !(prev__cctx->flags & CC_TRACE)
1191 && !force_cctx 1339 && !force_cctx
1192 )) 1340 ))
1193 { 1341 {
1194 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1195 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1196 1344
1197 prev->cctx = 0; 1345 prev->cctx = 0;
1198 1346
1199 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1347 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1200 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1348 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1207 1355
1208 ++next->usecount; 1356 ++next->usecount;
1209 1357
1210 if (expect_true (!next->cctx)) 1358 if (expect_true (!next->cctx))
1211 next->cctx = cctx_get (aTHX); 1359 next->cctx = cctx_get (aTHX);
1212
1213 has_throw = !!next->throw;
1214 1360
1215 if (expect_false (prev__cctx != next->cctx)) 1361 if (expect_false (prev__cctx != next->cctx))
1216 { 1362 {
1217 prev__cctx->top_env = PL_top_env; 1363 prev__cctx->top_env = PL_top_env;
1218 PL_top_env = next->cctx->top_env; 1364 PL_top_env = next->cctx->top_env;
1219 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1220 } 1366 }
1221 1367
1222 free_coro_mortal (aTHX); 1368 transfer_tail (aTHX);
1223 UNLOCK;
1224
1225 if (expect_false (has_throw))
1226 {
1227 struct coro *coro = SvSTATE (coro_current);
1228
1229 if (coro->throw)
1230 {
1231 SV *exception = coro->throw;
1232 coro->throw = 0;
1233 sv_setsv (ERRSV, exception);
1234 croak (0);
1235 }
1236 }
1237 } 1369 }
1238} 1370}
1239
1240struct transfer_args
1241{
1242 struct coro *prev, *next;
1243};
1244 1371
1245#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1372#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1246#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1247 1374
1248/** high level stuff ********************************************************/ 1375/** high level stuff ********************************************************/
… …
1250static int 1377static int
1251coro_state_destroy (pTHX_ struct coro *coro) 1378coro_state_destroy (pTHX_ struct coro *coro)
1252{ 1379{
1253 if (coro->flags & CF_DESTROYED) 1380 if (coro->flags & CF_DESTROYED)
1254 return 0; 1381 return 0;
1382
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro);
1255 1385
1256 coro->flags |= CF_DESTROYED; 1386 coro->flags |= CF_DESTROYED;
1257 1387
1258 if (coro->flags & CF_READY) 1388 if (coro->flags & CF_READY)
1259 { 1389 {
1260 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1390 /* reduce nready, as destroying a ready coro effectively unreadies it */
1261 /* alternative: look through all ready queues and remove the coro */ 1391 /* alternative: look through all ready queues and remove the coro */
1262 LOCK;
1263 --coro_nready; 1392 --coro_nready;
1264 UNLOCK;
1265 } 1393 }
1266 else 1394 else
1267 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1268 1396
1269 if (coro->mainstack && coro->mainstack != main_mainstack) 1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1270 { 1398 {
1271 struct coro temp; 1399 struct coro temp;
1272 1400
1273 if (coro->flags & CF_RUNNING) 1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1274 croak ("FATAL: tried to destroy currently running coroutine");
1275 1402
1276 save_perl (aTHX_ &temp); 1403 save_perl (aTHX_ &temp);
1277 load_perl (aTHX_ coro); 1404 load_perl (aTHX_ coro);
1278 1405
1279 coro_destroy (aTHX_ coro); 1406 coro_destruct (aTHX_ coro);
1280 1407
1281 load_perl (aTHX_ &temp); 1408 load_perl (aTHX_ &temp);
1282 1409
1283 coro->slot = 0; 1410 coro->slot = 0;
1284 } 1411 }
… …
1330# define MGf_DUP 0 1457# define MGf_DUP 0
1331#endif 1458#endif
1332}; 1459};
1333 1460
1334static void 1461static void
1335prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1462prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1336{ 1463{
1337 ta->prev = SvSTATE (prev_sv); 1464 ta->prev = SvSTATE (prev_sv);
1338 ta->next = SvSTATE (next_sv); 1465 ta->next = SvSTATE (next_sv);
1339 TRANSFER_CHECK (*ta); 1466 TRANSFER_CHECK (*ta);
1340} 1467}
1341 1468
1342static void 1469static void
1343api_transfer (SV *prev_sv, SV *next_sv) 1470api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1344{ 1471{
1345 dTHX;
1346 struct transfer_args ta; 1472 struct coro_transfer_args ta;
1347 1473
1348 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1474 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1349 TRANSFER (ta, 1); 1475 TRANSFER (ta, 1);
1350} 1476}
1351 1477
1352/** Coro ********************************************************************/ 1478/** Coro ********************************************************************/
1353 1479
1354static void 1480INLINE void
1355coro_enq (pTHX_ SV *coro_sv) 1481coro_enq (pTHX_ struct coro *coro)
1356{ 1482{
1357 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1358} 1484}
1359 1485
1360static SV * 1486INLINE SV *
1361coro_deq (pTHX) 1487coro_deq (pTHX)
1362{ 1488{
1363 int prio; 1489 int prio;
1364 1490
1365 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1368 1494
1369 return 0; 1495 return 0;
1370} 1496}
1371 1497
1372static int 1498static int
1373api_ready (SV *coro_sv) 1499api_ready (pTHX_ SV *coro_sv)
1374{ 1500{
1375 dTHX;
1376 struct coro *coro; 1501 struct coro *coro;
1502 SV *sv_hook;
1503 void (*xs_hook)(void);
1377 1504
1378 if (SvROK (coro_sv)) 1505 if (SvROK (coro_sv))
1379 coro_sv = SvRV (coro_sv); 1506 coro_sv = SvRV (coro_sv);
1380 1507
1381 coro = SvSTATE (coro_sv); 1508 coro = SvSTATE (coro_sv);
… …
1383 if (coro->flags & CF_READY) 1510 if (coro->flags & CF_READY)
1384 return 0; 1511 return 0;
1385 1512
1386 coro->flags |= CF_READY; 1513 coro->flags |= CF_READY;
1387 1514
1388 LOCK; 1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1389 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1517
1518 coro_enq (aTHX_ coro);
1390 ++coro_nready; 1519 ++coro_nready;
1391 UNLOCK; 1520
1521 if (sv_hook)
1522 {
1523 dSP;
1524
1525 ENTER;
1526 SAVETMPS;
1527
1528 PUSHMARK (SP);
1529 PUTBACK;
1530 call_sv (sv_hook, G_DISCARD);
1531 SPAGAIN;
1532
1533 FREETMPS;
1534 LEAVE;
1535 }
1536
1537 if (xs_hook)
1538 xs_hook ();
1392 1539
1393 return 1; 1540 return 1;
1394} 1541}
1395 1542
1396static int 1543static int
1397api_is_ready (SV *coro_sv) 1544api_is_ready (pTHX_ SV *coro_sv)
1398{ 1545{
1399 dTHX;
1400 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1546 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1401} 1547}
1402 1548
1403static void 1549INLINE void
1404prepare_schedule (pTHX_ struct transfer_args *ta) 1550prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1405{ 1551{
1406 SV *prev_sv, *next_sv; 1552 SV *prev_sv, *next_sv;
1407 1553
1408 for (;;) 1554 for (;;)
1409 { 1555 {
1410 LOCK;
1411 next_sv = coro_deq (aTHX); 1556 next_sv = coro_deq (aTHX);
1412 1557
1413 /* nothing to schedule: call the idle handler */ 1558 /* nothing to schedule: call the idle handler */
1414 if (expect_false (!next_sv)) 1559 if (expect_false (!next_sv))
1415 { 1560 {
1416 dSP; 1561 dSP;
1417 UNLOCK;
1418 1562
1419 ENTER; 1563 ENTER;
1420 SAVETMPS; 1564 SAVETMPS;
1421 1565
1422 PUSHMARK (SP); 1566 PUSHMARK (SP);
… …
1427 FREETMPS; 1571 FREETMPS;
1428 LEAVE; 1572 LEAVE;
1429 continue; 1573 continue;
1430 } 1574 }
1431 1575
1432 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE_hv (next_sv);
1433 1577
1434 /* cannot transfer to destroyed coros, skip and look for next */ 1578 /* cannot transfer to destroyed coros, skip and look for next */
1435 if (expect_false (ta->next->flags & CF_DESTROYED)) 1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1436 { 1580 {
1437 UNLOCK;
1438 SvREFCNT_dec (next_sv); 1581 SvREFCNT_dec (next_sv);
1439 /* coro_nready is already taken care of by destroy */ 1582 /* coro_nready has already been taken care of by destroy */
1440 continue; 1583 continue;
1441 } 1584 }
1442 1585
1443 --coro_nready; 1586 --coro_nready;
1444 UNLOCK;
1445 break; 1587 break;
1446 } 1588 }
1447 1589
1448 /* free this only after the transfer */ 1590 /* free this only after the transfer */
1449 prev_sv = SvRV (coro_current); 1591 prev_sv = SvRV (coro_current);
1450 ta->prev = SvSTATE (prev_sv); 1592 ta->prev = SvSTATE_hv (prev_sv);
1451 TRANSFER_CHECK (*ta); 1593 TRANSFER_CHECK (*ta);
1452 assert (ta->next->flags & CF_READY); 1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1453 ta->next->flags &= ~CF_READY; 1595 ta->next->flags &= ~CF_READY;
1454 SvRV_set (coro_current, next_sv); 1596 SvRV_set (coro_current, next_sv);
1455 1597
1456 LOCK;
1457 free_coro_mortal (aTHX); 1598 free_coro_mortal (aTHX);
1458 coro_mortal = prev_sv; 1599 coro_mortal = prev_sv;
1459 UNLOCK;
1460} 1600}
1461 1601
1462static void 1602INLINE void
1463prepare_cede (pTHX_ struct transfer_args *ta) 1603prepare_cede (pTHX_ struct coro_transfer_args *ta)
1464{ 1604{
1465 api_ready (coro_current); 1605 api_ready (aTHX_ coro_current);
1466 prepare_schedule (aTHX_ ta); 1606 prepare_schedule (aTHX_ ta);
1467} 1607}
1468 1608
1609INLINE void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{
1612 SV *prev = SvRV (coro_current);
1613
1614 if (coro_nready)
1615 {
1616 prepare_schedule (aTHX_ ta);
1617 api_ready (aTHX_ prev);
1618 }
1619 else
1620 prepare_nop (aTHX_ ta);
1621}
1622
1623static void
1624api_schedule (pTHX)
1625{
1626 struct coro_transfer_args ta;
1627
1628 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1);
1630}
1631
1469static int 1632static int
1470prepare_cede_notself (pTHX_ struct transfer_args *ta) 1633api_cede (pTHX)
1471{ 1634{
1472 if (coro_nready) 1635 struct coro_transfer_args ta;
1473 { 1636
1474 SV *prev = SvRV (coro_current);
1475 prepare_schedule (aTHX_ ta); 1637 prepare_cede (aTHX_ &ta);
1476 api_ready (prev); 1638
1639 if (expect_true (ta.prev != ta.next))
1640 {
1641 TRANSFER (ta, 1);
1477 return 1; 1642 return 1;
1478 } 1643 }
1479 else 1644 else
1480 return 0; 1645 return 0;
1481} 1646}
1482 1647
1483static void
1484api_schedule (void)
1485{
1486 dTHX;
1487 struct transfer_args ta;
1488
1489 prepare_schedule (aTHX_ &ta);
1490 TRANSFER (ta, 1);
1491}
1492
1493static int 1648static int
1494api_cede (void) 1649api_cede_notself (pTHX)
1495{ 1650{
1496 dTHX; 1651 if (coro_nready)
1652 {
1497 struct transfer_args ta; 1653 struct coro_transfer_args ta;
1498 1654
1499 prepare_cede (aTHX_ &ta); 1655 prepare_cede_notself (aTHX_ &ta);
1500
1501 if (expect_true (ta.prev != ta.next))
1502 {
1503 TRANSFER (ta, 1); 1656 TRANSFER (ta, 1);
1504 return 1; 1657 return 1;
1505 } 1658 }
1506 else 1659 else
1507 return 0; 1660 return 0;
1508} 1661}
1509 1662
1510static int 1663static void
1511api_cede_notself (void)
1512{
1513 dTHX;
1514 struct transfer_args ta;
1515
1516 if (prepare_cede_notself (aTHX_ &ta))
1517 {
1518 TRANSFER (ta, 1);
1519 return 1;
1520 }
1521 else
1522 return 0;
1523}
1524
1525static void
1526api_trace (SV *coro_sv, int flags) 1664api_trace (pTHX_ SV *coro_sv, int flags)
1527{ 1665{
1528 dTHX;
1529 struct coro *coro = SvSTATE (coro_sv); 1666 struct coro *coro = SvSTATE (coro_sv);
1530 1667
1531 if (flags & CC_TRACE) 1668 if (flags & CC_TRACE)
1532 { 1669 {
1533 if (!coro->cctx) 1670 if (!coro->cctx)
1534 coro->cctx = cctx_new (); 1671 coro->cctx = cctx_new_run ();
1535 else if (!(coro->cctx->flags & CC_TRACE)) 1672 else if (!(coro->cctx->flags & CC_TRACE))
1536 croak ("cannot enable tracing on coroutine with custom stack"); 1673 croak ("cannot enable tracing on coroutine with custom stack,");
1537 1674
1538 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1539 } 1676 }
1540 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1541 { 1678 {
… …
1546 else 1683 else
1547 coro->slot->runops = RUNOPS_DEFAULT; 1684 coro->slot->runops = RUNOPS_DEFAULT;
1548 } 1685 }
1549} 1686}
1550 1687
1688/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */
1690
1691static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1692static const CV *slf_cv;
1693static SV **slf_argv;
1694static int slf_argc, slf_arga; /* count, allocated */
1695static I32 slf_ax; /* top of stack, for restore */
1696
1697/* this restores the stack in the case we patched the entersub, to */
1698/* recreate the stack frame as perl will on following calls */
1699/* since entersub cleared the stack */
1700static OP *
1701pp_restore (pTHX)
1702{
1703 int i;
1704 SV **SP = PL_stack_base + slf_ax;
1705
1706 PUSHMARK (SP);
1707
1708 EXTEND (SP, slf_argc + 1);
1709
1710 for (i = 0; i < slf_argc; ++i)
1711 PUSHs (sv_2mortal (slf_argv [i]));
1712
1713 PUSHs ((SV *)CvGV (slf_cv));
1714
1715 RETURNOP (slf_restore.op_first);
1716}
1717
1718static void
1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1720{
1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1722}
1723
1724static void
1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1726{
1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{
1737 SV **arg = (SV **)slf_frame.data;
1738
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1740}
1741
1742static void
1743slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1744{
1745 if (items != 2)
1746 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1747
1748 frame->prepare = slf_prepare_transfer;
1749 frame->check = slf_check_nop;
1750 frame->data = (void *)arg; /* let's hope it will stay valid */
1751}
1752
1753static void
1754slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1755{
1756 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop;
1758}
1759
1760static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{
1763 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop;
1765}
1766
1767static void
1768slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1769{
1770 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop;
1772}
1773
1774/* we hijack an hopefully unused CV flag for our purposes */
1775#define CVf_SLF 0x4000
1776
1777/*
1778 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same
1780 * stack offset
1781 * SLF stands for "schedule-like-function".
1782 */
1783static OP *
1784pp_slf (pTHX)
1785{
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787
1788 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare))
1792 {
1793 /* first iteration */
1794 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */
1797 SV *gv = *sp;
1798
1799 /* do a quick consistency check on the "function" object, and if it isn't */
1800 /* for us, divert to the real entersub */
1801 if (SvTYPE (gv) != SVt_PVGV
1802 || !GvCV (gv)
1803 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1804 return PL_ppaddr[OP_ENTERSUB](aTHX);
1805
1806 if (!(PL_op->op_flags & OPf_STACKED))
1807 {
1808 /* ampersand-form of call, use @_ instead of stack */
1809 AV *av = GvAV (PL_defgv);
1810 arg = AvARRAY (av);
1811 items = AvFILLp (av) + 1;
1812 }
1813
1814 /* now call the init function, which needs to set up slf_frame */
1815 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1816 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1817
1818 /* pop args */
1819 SP = PL_stack_base + POPMARK;
1820
1821 PUTBACK;
1822 }
1823
1824 /* now that we have a slf_frame, interpret it! */
1825 /* we use a callback system not to make the code needlessly */
1826 /* complicated, but so we can run multiple perl coros from one cctx */
1827
1828 do
1829 {
1830 struct coro_transfer_args ta;
1831
1832 slf_frame.prepare (aTHX_ &ta);
1833 TRANSFER (ta, 0);
1834
1835 checkmark = PL_stack_sp - PL_stack_base;
1836 }
1837 while (slf_frame.check (aTHX_ &slf_frame));
1838
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */
1860 if (expect_false (coro_throw))
1861 {
1862 SV *exception = sv_2mortal (coro_throw);
1863
1864 coro_throw = 0;
1865 sv_setsv (ERRSV, exception);
1866 croak (0);
1867 }
1868
1869 return NORMAL;
1870}
1871
1872static void
1873api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1874{
1875 int i;
1876 SV **arg = PL_stack_base + ax;
1877 int items = PL_stack_sp - arg + 1;
1878
1879 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1880
1881 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1882 && PL_op->op_ppaddr != pp_slf)
1883 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1884
1885 CvFLAGS (cv) |= CVf_SLF;
1886 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1887 slf_cv = cv;
1888
1889 /* we patch the op, and then re-run the whole call */
1890 /* we have to put the same argument on the stack for this to work */
1891 /* and this will be done by pp_restore */
1892 slf_restore.op_next = (OP *)&slf_restore;
1893 slf_restore.op_type = OP_CUSTOM;
1894 slf_restore.op_ppaddr = pp_restore;
1895 slf_restore.op_first = PL_op;
1896
1897 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1898
1899 if (PL_op->op_flags & OPf_STACKED)
1900 {
1901 if (items > slf_arga)
1902 {
1903 slf_arga = items;
1904 free (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *));
1906 }
1907
1908 slf_argc = items;
1909
1910 for (i = 0; i < items; ++i)
1911 slf_argv [i] = SvREFCNT_inc (arg [i]);
1912 }
1913 else
1914 slf_argc = 0;
1915
1916 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1918
1919 PL_op = (OP *)&slf_restore;
1920}
1921
1922/*****************************************************************************/
1923/* PerlIO::cede */
1924
1925typedef struct
1926{
1927 PerlIOBuf base;
1928 NV next, every;
1929} PerlIOCede;
1930
1931static IV
1932PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1933{
1934 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1935
1936 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1937 self->next = nvtime () + self->every;
1938
1939 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1940}
1941
1942static SV *
1943PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1944{
1945 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1946
1947 return newSVnv (self->every);
1948}
1949
1950static IV
1951PerlIOCede_flush (pTHX_ PerlIO *f)
1952{
1953 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1954 double now = nvtime ();
1955
1956 if (now >= self->next)
1957 {
1958 api_cede (aTHX);
1959 self->next = now + self->every;
1960 }
1961
1962 return PerlIOBuf_flush (aTHX_ f);
1963}
1964
1965static PerlIO_funcs PerlIO_cede =
1966{
1967 sizeof(PerlIO_funcs),
1968 "cede",
1969 sizeof(PerlIOCede),
1970 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1971 PerlIOCede_pushed,
1972 PerlIOBuf_popped,
1973 PerlIOBuf_open,
1974 PerlIOBase_binmode,
1975 PerlIOCede_getarg,
1976 PerlIOBase_fileno,
1977 PerlIOBuf_dup,
1978 PerlIOBuf_read,
1979 PerlIOBuf_unread,
1980 PerlIOBuf_write,
1981 PerlIOBuf_seek,
1982 PerlIOBuf_tell,
1983 PerlIOBuf_close,
1984 PerlIOCede_flush,
1985 PerlIOBuf_fill,
1986 PerlIOBase_eof,
1987 PerlIOBase_error,
1988 PerlIOBase_clearerr,
1989 PerlIOBase_setlinebuf,
1990 PerlIOBuf_get_base,
1991 PerlIOBuf_bufsiz,
1992 PerlIOBuf_get_ptr,
1993 PerlIOBuf_get_cnt,
1994 PerlIOBuf_set_ptrcnt,
1995};
1996
1997/*****************************************************************************/
1998/* Coro::Semaphore */
1999
2000static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{
2003 SV *count_sv = AvARRAY (av)[0];
2004 IV count = SvIVX (count_sv);
2005
2006 count += adjust;
2007 SvIVX (count_sv) = count;
2008
2009 /* now wake up as many waiters as are expected to lock */
2010 while (count > 0 && AvFILLp (av) > 0)
2011 {
2012 SV *cb;
2013
2014 /* swap first two elements so we can shift a waiter */
2015 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av);
2018
2019 if (SvOBJECT (cb))
2020 api_ready (aTHX_ cb);
2021 else
2022 croak ("callbacks not yet supported");
2023
2024 SvREFCNT_dec (cb);
2025
2026 --count;
2027 }
2028}
2029
2030static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2032{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2035}
2036
2037static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2039{
2040 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0];
2042
2043 if (SvIVX (count_sv) > 0)
2044 {
2045 SvSTATE_current->on_destroy = 0;
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2047 return 0;
2048 }
2049 else
2050 {
2051 int i;
2052 /* if we were woken up but can't down, we look through the whole */
2053 /* waiters list and only add us if we aren't in there already */
2054 /* this avoids some degenerate memory usage cases */
2055
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current))
2058 return 1;
2059
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2061 return 1;
2062 }
2063}
2064
2065static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{
2068 AV *av = (AV *)SvRV (arg [0]);
2069
2070 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 {
2072 frame->data = (void *)av;
2073 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 }
2076 else
2077 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 }
2088
2089 frame->check = slf_check_semaphore_down;
2090
2091}
2092
2093/*****************************************************************************/
2094/* gensub: simple closure generation utility */
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{
2104 CV *cv = (CV *)newSV (0);
2105
2106 sv_upgrade ((SV *)cv, SVt_PVCV);
2107
2108 CvANON_on (cv);
2109 CvISXSUB_on (cv);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112
2113 return newRV_noinc ((SV *)cv);
2114}
2115
2116/*****************************************************************************/
2117/* Coro::AIO */
2118
2119#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2120
2121/* helper storage struct */
2122struct io_state
2123{
2124 int errorno;
2125 I32 laststype; /* U16 in 5.10.0 */
2126 int laststatval;
2127 Stat_t statcache;
2128};
2129
2130static void
2131coro_aio_callback (pTHX_ CV *cv)
2132{
2133 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG;
2135 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state));
2137
2138 av_extend (state, items);
2139
2140 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv);
2143
2144 {
2145 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2146
2147 data->errorno = errno;
2148 data->laststype = PL_laststype;
2149 data->laststatval = PL_laststatval;
2150 data->statcache = PL_statcache;
2151 }
2152
2153 /* now build the result vector out of all the parameters and the data_sv */
2154 {
2155 int i;
2156
2157 for (i = 0; i < items; ++i)
2158 av_push (state, SvREFCNT_inc_NN (ST (i)));
2159 }
2160
2161 av_push (state, data_sv);
2162
2163 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro);
2165 SvREFCNT_dec ((AV *)state);
2166}
2167
2168static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{
2171 AV *state = (AV *)frame->data;
2172
2173 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1;
2176
2177 /* restore status */
2178 {
2179 SV *data_sv = av_pop (state);
2180 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2181
2182 errno = data->errorno;
2183 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache;
2186
2187 SvREFCNT_dec (data_sv);
2188 }
2189
2190 /* push result values */
2191 {
2192 dSP;
2193 int i;
2194
2195 EXTEND (SP, AvFILLp (state) + 1);
2196 for (i = 0; i <= AvFILLp (state); ++i)
2197 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2198
2199 PUTBACK;
2200 }
2201
2202 return 0;
2203}
2204
2205static void
2206slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2209 SV *coro_hv = SvRV (coro_current);
2210 struct coro *coro = SvSTATE_hv (coro_hv);
2211
2212 /* put our coroutine id on the state arg */
2213 av_push (state, SvREFCNT_inc_NN (coro_hv));
2214
2215 /* first see whether we have a non-zero priority and set it as AIO prio */
2216 if (coro->prio)
2217 {
2218 dSP;
2219
2220 static SV *prio_cv;
2221 static SV *prio_sv;
2222
2223 if (expect_false (!prio_cv))
2224 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0);
2227 }
2228
2229 PUSHMARK (SP);
2230 sv_setiv (prio_sv, coro->prio);
2231 XPUSHs (prio_sv);
2232
2233 PUTBACK;
2234 call_sv (prio_cv, G_VOID | G_DISCARD);
2235 }
2236
2237 /* now call the original request */
2238 {
2239 dSP;
2240 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2241 int i;
2242
2243 PUSHMARK (SP);
2244
2245 /* first push all args to the stack */
2246 EXTEND (SP, items + 1);
2247
2248 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]);
2250
2251 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253
2254 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 }
2258
2259 /* now that the requets is going, we loop toll we have a result */
2260 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req;
2263}
2264
2265static void
2266coro_aio_req_xs (pTHX_ CV *cv)
2267{
2268 dVAR;
2269 dXSARGS;
2270
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272
2273 XSRETURN_EMPTY;
2274}
2275
2276/*****************************************************************************/
2277
1551MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1552 2279
1553PROTOTYPES: DISABLE 2280PROTOTYPES: DISABLE
1554 2281
1555BOOT: 2282BOOT:
1556{ 2283{
1557#ifdef USE_ITHREADS 2284#ifdef USE_ITHREADS
1558 MUTEX_INIT (&coro_mutex); 2285# if CORO_PTHREAD
2286 coro_thx = PERL_GET_CONTEXT;
2287# endif
1559#endif 2288#endif
1560 BOOT_PAGESIZE; 2289 BOOT_PAGESIZE;
1561 2290
1562 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1563 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1564 2293
1565 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2294 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1566 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2295 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1567 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2296 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1568 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1569 2297
1570 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2298 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1571 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2299 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1572 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2300 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1573 2301
… …
1582 main_top_env = PL_top_env; 2310 main_top_env = PL_top_env;
1583 2311
1584 while (main_top_env->je_prev) 2312 while (main_top_env->je_prev)
1585 main_top_env = main_top_env->je_prev; 2313 main_top_env = main_top_env->je_prev;
1586 2314
2315 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf,
2320 newSVpv ("coro_slf", 0), 0);
2321
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf,
2324 newSVpv ("coro schedule like function", 0), 0);
2325 }
2326
1587 coroapi.ver = CORO_API_VERSION; 2327 coroapi.ver = CORO_API_VERSION;
1588 coroapi.rev = CORO_API_REVISION; 2328 coroapi.rev = CORO_API_REVISION;
2329
1589 coroapi.transfer = api_transfer; 2330 coroapi.transfer = api_transfer;
2331
2332 coroapi.sv_state = SvSTATE_;
2333 coroapi.execute_slf = api_execute_slf;
2334 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself;
2338
2339 {
2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2341
2342 if (!svp) croak ("Time::HiRes is required");
2343 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2344
2345 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2346 }
1590 2347
1591 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2348 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1592} 2349}
1593 2350
1594SV * 2351SV *
… …
1618 av_push (coro->args, newSVsv (ST (i))); 2375 av_push (coro->args, newSVsv (ST (i)));
1619} 2376}
1620 OUTPUT: 2377 OUTPUT:
1621 RETVAL 2378 RETVAL
1622 2379
1623# these not obviously related functions are all rolled into the same xs
1624# function to increase chances that they all will call transfer with the same
1625# stack offset
1626void 2380void
1627_set_stacklevel (...) 2381_set_stacklevel (...)
1628 ALIAS: 2382 CODE:
1629 Coro::State::transfer = 1 2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1630 Coro::schedule = 2
1631 Coro::cede = 3
1632 Coro::cede_notself = 4
1633 CODE:
1634{
1635 struct transfer_args ta;
1636 2384
1637 PUTBACK; 2385void
1638 switch (ix) 2386transfer (...)
1639 { 2387 PROTOTYPE: $$
1640 case 0: 2388 CODE:
1641 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2389 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1642 ta.next = 0;
1643 break;
1644
1645 case 1:
1646 if (items != 2)
1647 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1648
1649 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1650 break;
1651
1652 case 2:
1653 prepare_schedule (aTHX_ &ta);
1654 break;
1655
1656 case 3:
1657 prepare_cede (aTHX_ &ta);
1658 break;
1659
1660 case 4:
1661 if (!prepare_cede_notself (aTHX_ &ta))
1662 XSRETURN_EMPTY;
1663
1664 break;
1665 }
1666 SPAGAIN;
1667
1668 BARRIER;
1669 PUTBACK;
1670 TRANSFER (ta, 0);
1671 SPAGAIN; /* might be the sp of a different coroutine now */
1672 /* be extra careful not to ever do anything after TRANSFER */
1673}
1674 2390
1675bool 2391bool
1676_destroy (SV *coro_sv) 2392_destroy (SV *coro_sv)
1677 CODE: 2393 CODE:
1678 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1679 OUTPUT: 2395 OUTPUT:
1680 RETVAL 2396 RETVAL
1681 2397
1682void 2398void
1683_exit (code) 2399_exit (int code)
1684 int code
1685 PROTOTYPE: $ 2400 PROTOTYPE: $
1686 CODE: 2401 CODE:
1687 _exit (code); 2402 _exit (code);
1688 2403
1689int 2404int
1690cctx_stacksize (int new_stacksize = 0) 2405cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$
1691 CODE: 2407 CODE:
1692 RETVAL = coro_stacksize; 2408 RETVAL = cctx_stacksize;
1693 if (new_stacksize) 2409 if (new_stacksize)
2410 {
1694 coro_stacksize = new_stacksize; 2411 cctx_stacksize = new_stacksize;
2412 ++cctx_gen;
2413 }
1695 OUTPUT: 2414 OUTPUT:
1696 RETVAL 2415 RETVAL
1697 2416
1698int 2417int
2418cctx_max_idle (int max_idle = 0)
2419 PROTOTYPE: ;$
2420 CODE:
2421 RETVAL = cctx_max_idle;
2422 if (max_idle > 1)
2423 cctx_max_idle = max_idle;
2424 OUTPUT:
2425 RETVAL
2426
2427int
1699cctx_count () 2428cctx_count ()
2429 PROTOTYPE:
1700 CODE: 2430 CODE:
1701 RETVAL = cctx_count; 2431 RETVAL = cctx_count;
1702 OUTPUT: 2432 OUTPUT:
1703 RETVAL 2433 RETVAL
1704 2434
1705int 2435int
1706cctx_idle () 2436cctx_idle ()
2437 PROTOTYPE:
1707 CODE: 2438 CODE:
1708 RETVAL = cctx_idle; 2439 RETVAL = cctx_idle;
1709 OUTPUT: 2440 OUTPUT:
1710 RETVAL 2441 RETVAL
1711 2442
1712void 2443void
1713list () 2444list ()
2445 PROTOTYPE:
1714 PPCODE: 2446 PPCODE:
1715{ 2447{
1716 struct coro *coro; 2448 struct coro *coro;
1717 for (coro = coro_first; coro; coro = coro->next) 2449 for (coro = coro_first; coro; coro = coro->next)
1718 if (coro->hv) 2450 if (coro->hv)
… …
1723call (Coro::State coro, SV *coderef) 2455call (Coro::State coro, SV *coderef)
1724 ALIAS: 2456 ALIAS:
1725 eval = 1 2457 eval = 1
1726 CODE: 2458 CODE:
1727{ 2459{
1728 if (coro->mainstack) 2460 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1729 { 2461 {
1730 struct coro temp; 2462 struct coro temp;
1731 2463
1732 if (!(coro->flags & CF_RUNNING)) 2464 if (!(coro->flags & CF_RUNNING))
1733 { 2465 {
… …
1777 RETVAL = boolSV (coro->flags & ix); 2509 RETVAL = boolSV (coro->flags & ix);
1778 OUTPUT: 2510 OUTPUT:
1779 RETVAL 2511 RETVAL
1780 2512
1781void 2513void
2514throw (Coro::State self, SV *throw = &PL_sv_undef)
2515 PROTOTYPE: $;$
2516 CODE:
2517{
2518 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw;
2520 SvREFCNT_dec (*throwp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2522}
2523
2524void
1782api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$
2527 C_ARGS: aTHX_ coro, flags
1783 2528
1784SV * 2529SV *
1785has_stack (Coro::State coro) 2530has_cctx (Coro::State coro)
1786 PROTOTYPE: $ 2531 PROTOTYPE: $
1787 CODE: 2532 CODE:
1788 RETVAL = boolSV (!!coro->cctx); 2533 RETVAL = boolSV (!!coro->cctx);
1789 OUTPUT: 2534 OUTPUT:
1790 RETVAL 2535 RETVAL
… …
1795 CODE: 2540 CODE:
1796 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2541 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1797 OUTPUT: 2542 OUTPUT:
1798 RETVAL 2543 RETVAL
1799 2544
1800IV 2545UV
1801rss (Coro::State coro) 2546rss (Coro::State coro)
1802 PROTOTYPE: $ 2547 PROTOTYPE: $
1803 ALIAS: 2548 ALIAS:
1804 usecount = 1 2549 usecount = 1
1805 CODE: 2550 CODE:
… …
1811 OUTPUT: 2556 OUTPUT:
1812 RETVAL 2557 RETVAL
1813 2558
1814void 2559void
1815force_cctx () 2560force_cctx ()
2561 PROTOTYPE:
1816 CODE: 2562 CODE:
1817 struct coro *coro = SvSTATE (coro_current);
1818 coro->cctx->idle_sp = 0; 2563 SvSTATE_current->cctx->idle_sp = 0;
2564
2565void
2566swap_defsv (Coro::State self)
2567 PROTOTYPE: $
2568 ALIAS:
2569 swap_defav = 1
2570 CODE:
2571 if (!self->slot)
2572 croak ("cannot swap state with coroutine that has no saved state,");
2573 else
2574 {
2575 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2577
2578 SV *tmp = *src; *src = *dst; *dst = tmp;
2579 }
2580
1819 2581
1820MODULE = Coro::State PACKAGE = Coro 2582MODULE = Coro::State PACKAGE = Coro
1821 2583
1822BOOT: 2584BOOT:
1823{ 2585{
1824 int i; 2586 int i;
1825 2587
2588 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1826 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2589 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1827 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2590 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1828 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1829 2591
1830 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2592 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1831 SvREADONLY_on (coro_current); 2593 SvREADONLY_on (coro_current);
1832 2594
1833 coro_stash = gv_stashpv ("Coro", TRUE); 2595 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1841 2603
1842 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1843 coro_ready[i] = newAV (); 2605 coro_ready[i] = newAV ();
1844 2606
1845 { 2607 {
1846 SV *sv = perl_get_sv ("Coro::API", TRUE); 2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1847 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1848 2609
1849 coroapi.schedule = api_schedule; 2610 coroapi.schedule = api_schedule;
1850 coroapi.cede = api_cede; 2611 coroapi.cede = api_cede;
1851 coroapi.cede_notself = api_cede_notself; 2612 coroapi.cede_notself = api_cede_notself;
1852 coroapi.ready = api_ready; 2613 coroapi.ready = api_ready;
1853 coroapi.is_ready = api_is_ready; 2614 coroapi.is_ready = api_is_ready;
1854 coroapi.nready = &coro_nready; 2615 coroapi.nready = coro_nready;
1855 coroapi.current = coro_current; 2616 coroapi.current = coro_current;
1856 2617
1857 GCoroAPI = &coroapi; 2618 GCoroAPI = &coroapi;
1858 sv_setiv (sv, (IV)&coroapi); 2619 sv_setiv (sv, (IV)&coroapi);
1859 SvREADONLY_on (sv); 2620 SvREADONLY_on (sv);
1860 } 2621 }
1861} 2622}
2623
2624void
2625schedule (...)
2626 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2628
2629void
2630cede (...)
2631 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede);
2633
2634void
2635cede_notself (...)
2636 CODE:
2637 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1862 2638
1863void 2639void
1864_set_current (SV *current) 2640_set_current (SV *current)
1865 PROTOTYPE: $ 2641 PROTOTYPE: $
1866 CODE: 2642 CODE:
1867 SvREFCNT_dec (SvRV (coro_current)); 2643 SvREFCNT_dec (SvRV (coro_current));
1868 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2644 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2645
2646void
2647_set_readyhook (SV *hook)
2648 PROTOTYPE: $
2649 CODE:
2650 SvREFCNT_dec (coro_readyhook);
2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1869 2652
1870int 2653int
1871prio (Coro::State coro, int newprio = 0) 2654prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$
1872 ALIAS: 2656 ALIAS:
1873 nice = 1 2657 nice = 1
1874 CODE: 2658 CODE:
1875{ 2659{
1876 RETVAL = coro->prio; 2660 RETVAL = coro->prio;
… …
1891 2675
1892SV * 2676SV *
1893ready (SV *self) 2677ready (SV *self)
1894 PROTOTYPE: $ 2678 PROTOTYPE: $
1895 CODE: 2679 CODE:
1896 RETVAL = boolSV (api_ready (self)); 2680 RETVAL = boolSV (api_ready (aTHX_ self));
1897 OUTPUT: 2681 OUTPUT:
1898 RETVAL 2682 RETVAL
1899 2683
1900int 2684int
1901nready (...) 2685nready (...)
… …
1903 CODE: 2687 CODE:
1904 RETVAL = coro_nready; 2688 RETVAL = coro_nready;
1905 OUTPUT: 2689 OUTPUT:
1906 RETVAL 2690 RETVAL
1907 2691
1908void
1909throw (Coro::State self, SV *throw = &PL_sv_undef)
1910 PROTOTYPE: $;$
1911 CODE:
1912 SvREFCNT_dec (self->throw);
1913 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1914
1915void
1916swap_defsv (Coro::State self)
1917 PROTOTYPE: $
1918 ALIAS:
1919 swap_defav = 1
1920 CODE:
1921 if (!self->slot)
1922 croak ("cannot swap state with coroutine that has no saved state");
1923 else
1924 {
1925 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1926 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1927
1928 SV *tmp = *src; *src = *dst; *dst = tmp;
1929 }
1930
1931# for async_pool speedup 2692# for async_pool speedup
1932void 2693void
1933_pool_1 (SV *cb) 2694_pool_1 (SV *cb)
1934 CODE: 2695 CODE:
1935{ 2696{
1936 struct coro *coro = SvSTATE (coro_current);
1937 HV *hv = (HV *)SvRV (coro_current); 2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
1938 AV *defav = GvAV (PL_defgv); 2699 AV *defav = GvAV (PL_defgv);
1939 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1940 AV *invoke_av; 2701 AV *invoke_av;
1941 int i, len; 2702 int i, len;
1942 2703
1943 if (!invoke) 2704 if (!invoke)
1944 { 2705 {
1945 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2706 SV *old = PL_diehook;
2707 PL_diehook = 0;
2708 SvREFCNT_dec (old);
1946 croak ("\3async_pool terminate\2\n"); 2709 croak ("\3async_pool terminate\2\n");
1947 } 2710 }
1948 2711
1949 SvREFCNT_dec (coro->saved_deffh); 2712 SvREFCNT_dec (coro->saved_deffh);
1950 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2713 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1951 2714
1952 hv_store (hv, "desc", sizeof ("desc") - 1, 2715 hv_store (hv, "desc", sizeof ("desc") - 1,
1953 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2716 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1954 2717
1955 invoke_av = (AV *)SvRV (invoke); 2718 invoke_av = (AV *)SvRV (invoke);
… …
1959 2722
1960 if (len > 0) 2723 if (len > 0)
1961 { 2724 {
1962 av_fill (defav, len - 1); 2725 av_fill (defav, len - 1);
1963 for (i = 0; i < len; ++i) 2726 for (i = 0; i < len; ++i)
1964 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1965 } 2728 }
1966
1967 SvREFCNT_dec (invoke);
1968} 2729}
1969 2730
1970void 2731void
1971_pool_2 (SV *cb) 2732_pool_2 (SV *cb)
1972 CODE: 2733 CODE:
1973{ 2734{
1974 struct coro *coro = SvSTATE (coro_current); 2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv);
1975 2737
1976 sv_setsv (cb, &PL_sv_undef); 2738 sv_setsv (cb, &PL_sv_undef);
1977 2739
1978 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1979 coro->saved_deffh = 0; 2741 coro->saved_deffh = 0;
1980 2742
1981 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1982 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1983 { 2745 {
1984 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2746 SV *old = PL_diehook;
2747 PL_diehook = 0;
2748 SvREFCNT_dec (old);
1985 croak ("\3async_pool terminate\2\n"); 2749 croak ("\3async_pool terminate\2\n");
1986 } 2750 }
1987 2751
1988 av_clear (GvAV (PL_defgv)); 2752 av_clear (GvAV (PL_defgv));
1989 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2753 hv_store (hv, "desc", sizeof ("desc") - 1,
1990 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1991 2755
1992 coro->prio = 0; 2756 coro->prio = 0;
1993 2757
1994 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1995 api_trace (coro_current, 0); 2759 api_trace (aTHX_ coro_current, 0);
1996 2760
1997 av_push (av_async_pool, newSVsv (coro_current)); 2761 av_push (av_async_pool, newSVsv (coro_current));
1998} 2762}
1999 2763
2000 2764
2765MODULE = Coro::State PACKAGE = PerlIO::cede
2766
2767BOOT:
2768 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2769
2770
2001MODULE = Coro::State PACKAGE = Coro::AIO 2771MODULE = Coro::State PACKAGE = Coro::Semaphore
2002 2772
2003SV * 2773SV *
2004_get_state () 2774new (SV *klass, SV *count_ = 0)
2005 CODE: 2775 CODE:
2006{ 2776{
2007 struct io_state *data; 2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2008 2778 AV *av = newAV ();
2009 RETVAL = newSV (sizeof (struct io_state)); 2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2010 data = (struct io_state *)SvPVX (RETVAL); 2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2011 SvCUR_set (RETVAL, sizeof (struct io_state));
2012 SvPOK_only (RETVAL);
2013
2014 data->errorno = errno;
2015 data->laststype = PL_laststype;
2016 data->laststatval = PL_laststatval;
2017 data->statcache = PL_statcache;
2018} 2781}
2019 OUTPUT: 2782 OUTPUT:
2020 RETVAL 2783 RETVAL
2021 2784
2785SV *
2786count (SV *self)
2787 CODE:
2788 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2789 OUTPUT:
2790 RETVAL
2791
2022void 2792void
2023_set_state (char *data_) 2793up (SV *self, int adjust = 1)
2024 PROTOTYPE: $ 2794 ALIAS:
2795 adjust = 1
2796 CODE:
2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2798
2799void
2800down (SV *self)
2801 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2803
2804void
2805try (SV *self)
2806 PPCODE:
2807{
2808 AV *av = (AV *)SvRV (self);
2809 SV *count_sv = AvARRAY (av)[0];
2810 IV count = SvIVX (count_sv);
2811
2812 if (count > 0)
2813 {
2814 --count;
2815 SvIVX (count_sv) = count;
2816 XSRETURN_YES;
2817 }
2818 else
2819 XSRETURN_NO;
2820}
2821
2822void
2823waiters (SV *self)
2824 CODE:
2825{
2826 AV *av = (AV *)SvRV (self);
2827
2828 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2830 else
2831 {
2832 int i;
2833 EXTEND (SP, AvFILLp (av) + 1 - 1);
2834 for (i = 1; i <= AvFILLp (av); ++i)
2835 PUSHs (newSVsv (AvARRAY (av)[i]));
2836 }
2837}
2838
2839
2840MODULE = Coro::State PACKAGE = Coro::AnyEvent
2841
2842BOOT:
2843 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2844
2845void
2846_schedule (...)
2025 CODE: 2847 CODE:
2026{ 2848{
2027 struct io_state *data = (void *)data_; 2849 static int incede;
2028 2850
2029 errno = data->errorno; 2851 api_cede_notself (aTHX);
2030 PL_laststype = data->laststype;
2031 PL_laststatval = data->laststatval;
2032 PL_statcache = data->statcache;
2033}
2034 2852
2853 ++incede;
2854 while (coro_nready >= incede && api_cede (aTHX))
2855 ;
2856
2857 sv_setsv (sv_activity, &PL_sv_undef);
2858 if (coro_nready >= incede)
2859 {
2860 PUSHMARK (SP);
2861 PUTBACK;
2862 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2863 SPAGAIN;
2864 }
2865
2866 --incede;
2867}
2868
2869
2870MODULE = Coro::State PACKAGE = Coro::AIO
2871
2872void
2873_register (char *target, char *proto, SV *req)
2874 CODE:
2875{
2876 HV *st;
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881}
2882

Diff Legend

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