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Comparing Coro/Coro/State.xs (file contents):
Revision 1.245 by root, Mon Sep 22 05:40:21 2008 UTC vs.
Revision 1.332 by root, Thu Nov 27 12:20:31 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>
… …
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
63 61
64#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr 63# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
67# endif 65# endif
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 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
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100#ifndef CvISXSUB_on
93/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
94#ifndef CxHASARGS 102#endif
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs 103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
96#endif 108#endif
97 109
98/* 5.8.7 */ 110/* 5.8.7 */
99#ifndef SvRV_set 111#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 126#endif
115 127
116/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
118#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
120 137
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
122 139
123#if __GNUC__ >= 3 140#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
127#else 144#else
128# define attribute(x) 145# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
131#endif 148#endif
132 149
133#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
135 152
136#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
137 154
138#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
139 157
140#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 159# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 161# endif
162#endif
148 163
149/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 174static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
164 181
165static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 184static SV *rv_diehook;
168static SV *rv_warnhook; 185static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
170 187
171/* async_pool helper stuff */ 188/* async_pool helper stuff */
172static SV *sv_pool_rss; 189static SV *sv_pool_rss;
173static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
175 196
176/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
177static SV *sv_activity; 198static SV *sv_activity;
178 199
179static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 210};
190 211
191/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 213typedef struct coro_cctx
214{
193 struct coro_cctx *next; 215 struct coro_cctx *next;
194 216
195 /* the stack */ 217 /* the stack */
196 void *sptr; 218 void *sptr;
197 size_t ssize; 219 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 224 JMPENV *top_env;
203 coro_context cctx; 225 coro_context cctx;
204 226
227 U32 gen;
205#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
206 int valgrind_id; 229 int valgrind_id;
207#endif 230#endif
208 unsigned char flags; 231 unsigned char flags;
209} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
210 237
211enum { 238enum {
212 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
213 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
214 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 243};
217 244
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 246typedef struct
247{
220 SV *defsv; 248 SV *defsv;
221 AV *defav; 249 AV *defav;
222 SV *errsv; 250 SV *errsv;
223 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
224#define VAR(name,type) type name; 253#define VAR(name,type) type name;
225# include "state.h" 254# include "state.h"
226#undef VAR 255#undef VAR
227} perl_slots; 256} perl_slots;
228 257
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 259
231/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
232struct coro { 261struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 263 coro_cctx *cctx;
235 264
236 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 267 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
239 269
270 CV *startcv; /* the CV to execute */
240 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
244 276
245 /* statistics */ 277 /* statistics */
246 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
247 279
248 /* coro process data */ 280 /* coro process data */
249 int prio; 281 int prio;
250 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
251 284
252 /* async_pool */ 285 /* async_pool */
253 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
254 289
255 /* linked list */ 290 /* linked list */
256 struct coro *next, *prev; 291 struct coro *next, *prev;
257}; 292};
258 293
259typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
261 301
262/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
263 303
264#define PRIO_MAX 3 304#define PRIO_MAX 3
265#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 309#define PRIO_MIN -4
270 310
271/* for Coro.pm */ 311/* for Coro.pm */
272static SV *coro_current; 312static SV *coro_current;
273static SV *coro_readyhook; 313static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
276static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
277 318
278/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
279 320
280static SV * 321static SV *
281coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
305 get_hv (name, create); 346 get_hv (name, create);
306#endif 347#endif
307 return get_hv (name, create); 348 return get_hv (name, create);
308} 349}
309 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360/*****************************************************************************/
361/* magic glue */
362
363#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext
365
366#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type))
370
371#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \
374 : 0)
375
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378
379INLINE struct coro *
380SvSTATE_ (pTHX_ SV *coro)
381{
382 HV *stash;
383 MAGIC *mg;
384
385 if (SvROK (coro))
386 coro = SvRV (coro);
387
388 if (expect_false (SvTYPE (coro) != SVt_PVHV))
389 croak ("Coro::State object required");
390
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr;
401}
402
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404
405/* faster than SvSTATE, but expects a coroutine hv */
406#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408
409/*****************************************************************************/
410/* padlist management and caching */
411
310static AV * 412static AV *
311coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
312{ 414{
313 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
314 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
315 417
316 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 424#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 426 --AvFILLp (padlist);
325 427
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
327 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
328 430
329 return newpadlist; 431 return newpadlist;
330} 432}
331 433
332static void 434static void
333free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
334{ 436{
335 /* may be during global destruction */ 437 /* may be during global destruction */
336 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
337 { 439 {
338 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
339 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
340 { 443 {
341 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
342 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
343 { 446 I32 j = AvFILLp (av);
344 SV *sv; 447
345 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
346 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
347
348 SvREFCNT_dec (*svp);
349 }
350 } 453 }
351 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
352 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
353 } 459 }
354} 460}
355 461
356static int 462static int
… …
365 471
366 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
367 473
368 return 0; 474 return 0;
369} 475}
370
371#define CORO_MAGIC_type_cv PERL_MAGIC_ext
372#define CORO_MAGIC_type_state PERL_MAGIC_ext
373 476
374static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
375 0, 0, 0, 0, 478 0, 0, 0, 0,
376 coro_cv_free 479 coro_cv_free
377}; 480};
378
379#define CORO_MAGIC(sv,type) \
380 SvMAGIC (sv) \
381 ? SvMAGIC (sv)->mg_type == type \
382 ? SvMAGIC (sv) \
383 : mg_find (sv, type) \
384 : 0
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
388
389static struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
414 481
415/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
416static void 483static void
417get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
418{ 485{
… …
424 else 491 else
425 { 492 {
426#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
427 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
428 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
429 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
430 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
431 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
432 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
433#else 500#else
434 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
435#endif 502#endif
436 } 503 }
437} 504}
438 505
439static void 506static void
… …
446 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
447 514
448 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
449 516
450 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
451 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
452 519
453 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
454} 521}
455 522
456/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
461 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
462 c->slot = 0; 529 c->slot = 0;
463 530
464 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
465 532
466 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
467 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
468 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
469 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
470 538
471 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
472 # include "state.h" 540 # include "state.h"
473 #undef VAR 541 #undef VAR
474 542
… …
485 CvPADLIST (cv) = (AV *)POPs; 553 CvPADLIST (cv) = (AV *)POPs;
486 } 554 }
487 555
488 PUTBACK; 556 PUTBACK;
489 } 557 }
558
559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
490} 561}
491 562
492static void 563static void
493save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
494{ 565{
566 c->except = CORO_THROW;
567 c->slf_frame = slf_frame;
568
495 { 569 {
496 dSP; 570 dSP;
497 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
498 PERL_CONTEXT *ccstk = cxstack; 572 PERL_CONTEXT *ccstk = cxstack;
499 PERL_SI *top_si = PL_curstackinfo; 573 PERL_SI *top_si = PL_curstackinfo;
… …
554 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
555 629
556 { 630 {
557 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
558 632
559 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
560 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
561 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
562 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
563 638
564 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
565 # include "state.h" 640 # include "state.h"
566 #undef VAR 641 #undef VAR
567 } 642 }
568} 643}
569 644
570/* 645/*
571 * allocate various perl stacks. This is an exact copy 646 * allocate various perl stacks. This is almost an exact copy
572 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
573 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
574 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
575 */ 650 */
576#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
577# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
578#else 653#else
579static void 654static void
580coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
581{ 656{
582 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
619 694
620/* 695/*
621 * destroy the stacks, the callchain etc... 696 * destroy the stacks, the callchain etc...
622 */ 697 */
623static void 698static void
624coro_destroy_stacks (pTHX) 699coro_destruct_stacks (pTHX)
625{ 700{
626 while (PL_curstackinfo->si_next) 701 while (PL_curstackinfo->si_next)
627 PL_curstackinfo = PL_curstackinfo->si_next; 702 PL_curstackinfo = PL_curstackinfo->si_next;
628 703
629 while (PL_curstackinfo) 704 while (PL_curstackinfo)
… …
645#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
646 Safefree (PL_retstack); 721 Safefree (PL_retstack);
647#endif 722#endif
648} 723}
649 724
725#define CORO_RSS \
726 rss += sizeof (SYM (curstackinfo)); \
727 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
728 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
729 rss += SYM (tmps_max) * sizeof (SV *); \
730 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
731 rss += SYM (scopestack_max) * sizeof (I32); \
732 rss += SYM (savestack_max) * sizeof (ANY);
733
650static size_t 734static size_t
651coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
652{ 736{
653 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
654 738
655 if (coro->mainstack) 739 if (coro->mainstack)
656 { 740 {
657 perl_slots tmp_slot;
658 perl_slots *slot;
659
660 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
661 { 742 {
662 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
663 744 CORO_RSS;
664 #define VAR(name,type) slot->name = PL_ ## name;
665 # include "state.h"
666 #undef VAR 745 #undef SYM
667 } 746 }
668 else 747 else
669 slot = coro->slot;
670
671 if (slot)
672 { 748 {
673 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
674 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
675 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
676 rss += slot->tmps_max * sizeof (SV *);
677 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
678 rss += slot->scopestack_max * sizeof (I32);
679 rss += slot->savestack_max * sizeof (ANY);
680
681#if !PERL_VERSION_ATLEAST (5,10,0)
682 rss += slot->retstack_max * sizeof (OP *);
683#endif
684 } 752 }
685 } 753 }
686 754
687 return rss; 755 return rss;
688} 756}
… …
778 846
779 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 847 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
780} 848}
781 849
782static void 850static void
851prepare_nop (pTHX_ struct coro_transfer_args *ta)
852{
853 /* kind of mega-hacky, but works */
854 ta->next = ta->prev = (struct coro *)ta;
855}
856
857static int
858slf_check_nop (pTHX_ struct CoroSLF *frame)
859{
860 return 0;
861}
862
863static int
864slf_check_repeat (pTHX_ struct CoroSLF *frame)
865{
866 return 1;
867}
868
869static UNOP coro_setup_op;
870
871static void NOINLINE /* noinline to keep it out of the transfer fast path */
783coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
784{ 873{
785 /* 874 /*
786 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
787 */ 876 */
… …
789 878
790 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
791 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
792 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
793 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
794 PL_curpm = 0; 886 PL_curpm = 0;
795 PL_curpad = 0; 887 PL_curpad = 0;
796 PL_localizing = 0; 888 PL_localizing = 0;
797 PL_dirty = 0; 889 PL_dirty = 0;
798 PL_restartop = 0; 890 PL_restartop = 0;
799#if PERL_VERSION_ATLEAST (5,10,0) 891#if PERL_VERSION_ATLEAST (5,10,0)
800 PL_parser = 0; 892 PL_parser = 0;
801#endif 893#endif
894 PL_hints = 0;
802 895
803 /* recreate the die/warn hooks */ 896 /* recreate the die/warn hooks */
804 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 897 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
805 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 898 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
806 899
807 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
808 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
809 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
810 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 903 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
904 GvHV (PL_hintgv) = 0;
811 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
812 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
813 907
814 { 908 {
815 dSP; 909 dSP;
816 LOGOP myop; 910 UNOP myop;
817 911
818 Zero (&myop, 1, LOGOP); 912 Zero (&myop, 1, UNOP);
819 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
820 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
821 916
822 PUSHMARK (SP); 917 PUSHMARK (SP);
823 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
824 PUTBACK; 919 PUTBACK;
825 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
826 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
827 SPAGAIN;
828 } 922 }
829 923
830 /* this newly created coroutine might be run on an existing cctx which most 924 /* this newly created coroutine might be run on an existing cctx which most
831 * likely was suspended in set_stacklevel, called from entersub. 925 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
832 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
833 * so we ENTER here for symmetry
834 */ 926 */
835 ENTER; 927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
836} 928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
837 929
930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
931 coro_setup_op.op_next = PL_op;
932 coro_setup_op.op_type = OP_ENTERSUB;
933 coro_setup_op.op_ppaddr = pp_slf;
934 /* no flags etc. required, as an init function won't be called */
935
936 PL_op = (OP *)&coro_setup_op;
937
938 /* copy throw, in case it was set before coro_setup */
939 CORO_THROW = coro->except;
940}
941
838static void 942static void
839coro_destroy (pTHX_ struct coro *coro) 943coro_destruct (pTHX_ struct coro *coro)
840{ 944{
841 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
842 { 946 {
843 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
844 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
859 SvREFCNT_dec (GvAV (PL_defgv)); 963 SvREFCNT_dec (GvAV (PL_defgv));
860 SvREFCNT_dec (GvSV (PL_errgv)); 964 SvREFCNT_dec (GvSV (PL_errgv));
861 SvREFCNT_dec (PL_defoutgv); 965 SvREFCNT_dec (PL_defoutgv);
862 SvREFCNT_dec (PL_rs); 966 SvREFCNT_dec (PL_rs);
863 SvREFCNT_dec (GvSV (irsgv)); 967 SvREFCNT_dec (GvSV (irsgv));
968 SvREFCNT_dec (GvHV (PL_hintgv));
864 969
865 SvREFCNT_dec (PL_diehook); 970 SvREFCNT_dec (PL_diehook);
866 SvREFCNT_dec (PL_warnhook); 971 SvREFCNT_dec (PL_warnhook);
867 972
868 SvREFCNT_dec (coro->saved_deffh); 973 SvREFCNT_dec (coro->saved_deffh);
869 SvREFCNT_dec (coro->throw); 974 SvREFCNT_dec (coro->rouse_cb);
975 SvREFCNT_dec (coro->invoke_cb);
976 SvREFCNT_dec (coro->invoke_av);
870 977
871 coro_destroy_stacks (aTHX); 978 coro_destruct_stacks (aTHX);
872} 979}
873 980
874static void 981INLINE void
875free_coro_mortal (pTHX) 982free_coro_mortal (pTHX)
876{ 983{
877 if (expect_true (coro_mortal)) 984 if (expect_true (coro_mortal))
878 { 985 {
879 SvREFCNT_dec (coro_mortal); 986 SvREFCNT_dec (coro_mortal);
… …
884static int 991static int
885runops_trace (pTHX) 992runops_trace (pTHX)
886{ 993{
887 COP *oldcop = 0; 994 COP *oldcop = 0;
888 int oldcxix = -2; 995 int oldcxix = -2;
889 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
890 coro_cctx *cctx = coro->cctx;
891 996
892 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 997 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
893 { 998 {
894 PERL_ASYNC_CHECK (); 999 PERL_ASYNC_CHECK ();
895 1000
896 if (cctx->flags & CC_TRACE_ALL) 1001 if (cctx_current->flags & CC_TRACE_ALL)
897 { 1002 {
898 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1003 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
899 { 1004 {
900 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1005 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
901 SV **bot, **top; 1006 SV **bot, **top;
902 AV *av = newAV (); /* return values */ 1007 AV *av = newAV (); /* return values */
903 SV **cb; 1008 SV **cb;
… …
913 : cx->blk_gimme == G_SCALAR ? bot + 1 1018 : cx->blk_gimme == G_SCALAR ? bot + 1
914 : bot; 1019 : bot;
915 1020
916 av_extend (av, top - bot); 1021 av_extend (av, top - bot);
917 while (bot < top) 1022 while (bot < top)
918 av_push (av, SvREFCNT_inc (*bot++)); 1023 av_push (av, SvREFCNT_inc_NN (*bot++));
919 1024
920 PL_runops = RUNOPS_DEFAULT; 1025 PL_runops = RUNOPS_DEFAULT;
921 ENTER; 1026 ENTER;
922 SAVETMPS; 1027 SAVETMPS;
923 EXTEND (SP, 3); 1028 EXTEND (SP, 3);
… …
940 1045
941 if (PL_curcop != &PL_compiling) 1046 if (PL_curcop != &PL_compiling)
942 { 1047 {
943 SV **cb; 1048 SV **cb;
944 1049
945 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1050 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
946 { 1051 {
947 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1052 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
948 1053
949 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1054 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
950 { 1055 {
951 runops_proc_t old_runops = PL_runops;
952 dSP; 1056 dSP;
953 GV *gv = CvGV (cx->blk_sub.cv); 1057 GV *gv = CvGV (cx->blk_sub.cv);
954 SV *fullname = sv_2mortal (newSV (0)); 1058 SV *fullname = sv_2mortal (newSV (0));
955 1059
956 if (isGV (gv)) 1060 if (isGV (gv))
… …
961 SAVETMPS; 1065 SAVETMPS;
962 EXTEND (SP, 3); 1066 EXTEND (SP, 3);
963 PUSHMARK (SP); 1067 PUSHMARK (SP);
964 PUSHs (&PL_sv_yes); 1068 PUSHs (&PL_sv_yes);
965 PUSHs (fullname); 1069 PUSHs (fullname);
966 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1070 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
967 PUTBACK; 1071 PUTBACK;
968 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1072 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
969 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1073 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
970 SPAGAIN; 1074 SPAGAIN;
971 FREETMPS; 1075 FREETMPS;
… …
974 } 1078 }
975 1079
976 oldcxix = cxstack_ix; 1080 oldcxix = cxstack_ix;
977 } 1081 }
978 1082
979 if (cctx->flags & CC_TRACE_LINE) 1083 if (cctx_current->flags & CC_TRACE_LINE)
980 { 1084 {
981 dSP; 1085 dSP;
982 1086
983 PL_runops = RUNOPS_DEFAULT; 1087 PL_runops = RUNOPS_DEFAULT;
984 ENTER; 1088 ENTER;
… …
1003 1107
1004 TAINT_NOT; 1108 TAINT_NOT;
1005 return 0; 1109 return 0;
1006} 1110}
1007 1111
1008/* inject a fake call to Coro::State::_cctx_init into the execution */ 1112static struct CoroSLF cctx_ssl_frame;
1009/* _cctx_init should be careful, as it could be called at almost any time */ 1113
1010/* during execution of a perl program */ 1114static void
1115slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1116{
1117 ta->prev = 0;
1118}
1119
1120static int
1121slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1122{
1123 *frame = cctx_ssl_frame;
1124
1125 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1126}
1127
1128/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1011static void NOINLINE 1129static void NOINLINE
1012cctx_prepare (pTHX_ coro_cctx *cctx) 1130cctx_prepare (pTHX)
1013{ 1131{
1014 dSP;
1015 LOGOP myop;
1016
1017 PL_top_env = &PL_start_env; 1132 PL_top_env = &PL_start_env;
1018 1133
1019 if (cctx->flags & CC_TRACE) 1134 if (cctx_current->flags & CC_TRACE)
1020 PL_runops = runops_trace; 1135 PL_runops = runops_trace;
1021 1136
1022 Zero (&myop, 1, LOGOP); 1137 /* we already must be executing an SLF op, there is no other valid way
1023 myop.op_next = PL_op; 1138 * that can lead to creation of a new cctx */
1024 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1139 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1140 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1025 1141
1026 PUSHMARK (SP); 1142 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1027 EXTEND (SP, 2); 1143 cctx_ssl_frame = slf_frame;
1028 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1144
1029 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1145 slf_frame.prepare = slf_prepare_set_stacklevel;
1030 PUTBACK; 1146 slf_frame.check = slf_check_set_stacklevel;
1031 PL_op = (OP *)&myop; 1147}
1032 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1148
1033 SPAGAIN; 1149/* the tail of transfer: execute stuff we can only do after a transfer */
1150INLINE void
1151transfer_tail (pTHX)
1152{
1153 free_coro_mortal (aTHX);
1034} 1154}
1035 1155
1036/* 1156/*
1037 * this is a _very_ stripped down perl interpreter ;) 1157 * this is a _very_ stripped down perl interpreter ;)
1038 */ 1158 */
1039static void 1159static void
1040cctx_run (void *arg) 1160cctx_run (void *arg)
1041{ 1161{
1162#ifdef USE_ITHREADS
1163# if CORO_PTHREAD
1164 PERL_SET_CONTEXT (coro_thx);
1165# endif
1166#endif
1167 {
1042 dTHX; 1168 dTHX;
1043 1169
1044 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1170 /* normally we would need to skip the entersub here */
1045 UNLOCK; 1171 /* not doing so will re-execute it, which is exactly what we want */
1046
1047 /* we now skip the entersub that lead to transfer() */
1048 PL_op = PL_op->op_next; 1172 /* PL_nop = PL_nop->op_next */
1049 1173
1050 /* inject a fake subroutine call to cctx_init */ 1174 /* inject a fake subroutine call to cctx_init */
1051 cctx_prepare (aTHX_ (coro_cctx *)arg); 1175 cctx_prepare (aTHX);
1052 1176
1177 /* cctx_run is the alternative tail of transfer() */
1178 transfer_tail (aTHX);
1179
1053 /* somebody or something will hit me for both perl_run and PL_restartop */ 1180 /* somebody or something will hit me for both perl_run and PL_restartop */
1054 PL_restartop = PL_op; 1181 PL_restartop = PL_op;
1055 perl_run (PL_curinterp); 1182 perl_run (PL_curinterp);
1056
1057 /* 1183 /*
1184 * Unfortunately, there is no way to get at the return values of the
1185 * coro body here, as perl_run destroys these
1186 */
1187
1188 /*
1058 * If perl-run returns we assume exit() was being called or the coro 1189 * If perl-run returns we assume exit() was being called or the coro
1059 * fell off the end, which seems to be the only valid (non-bug) 1190 * fell off the end, which seems to be the only valid (non-bug)
1060 * reason for perl_run to return. We try to exit by jumping to the 1191 * reason for perl_run to return. We try to exit by jumping to the
1061 * bootstrap-time "top" top_env, as we cannot restore the "main" 1192 * bootstrap-time "top" top_env, as we cannot restore the "main"
1062 * coroutine as Coro has no such concept 1193 * coroutine as Coro has no such concept.
1194 * This actually isn't valid with the pthread backend, but OSes requiring
1195 * that backend are too broken to do it in a standards-compliant way.
1063 */ 1196 */
1064 PL_top_env = main_top_env; 1197 PL_top_env = main_top_env;
1065 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1198 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1199 }
1066} 1200}
1067 1201
1068static coro_cctx * 1202static coro_cctx *
1069cctx_new () 1203cctx_new ()
1070{ 1204{
1071 coro_cctx *cctx; 1205 coro_cctx *cctx;
1206
1207 ++cctx_count;
1208 New (0, cctx, 1, coro_cctx);
1209
1210 cctx->gen = cctx_gen;
1211 cctx->flags = 0;
1212 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1213
1214 return cctx;
1215}
1216
1217/* create a new cctx only suitable as source */
1218static coro_cctx *
1219cctx_new_empty ()
1220{
1221 coro_cctx *cctx = cctx_new ();
1222
1223 cctx->sptr = 0;
1224 coro_create (&cctx->cctx, 0, 0, 0, 0);
1225
1226 return cctx;
1227}
1228
1229/* create a new cctx suitable as destination/running a perl interpreter */
1230static coro_cctx *
1231cctx_new_run ()
1232{
1233 coro_cctx *cctx = cctx_new ();
1072 void *stack_start; 1234 void *stack_start;
1073 size_t stack_size; 1235 size_t stack_size;
1074 1236
1075 ++cctx_count;
1076
1077 Newz (0, cctx, 1, coro_cctx);
1078
1079#if HAVE_MMAP 1237#if HAVE_MMAP
1080 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1238 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1081 /* mmap supposedly does allocate-on-write for us */ 1239 /* mmap supposedly does allocate-on-write for us */
1082 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1240 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1083 1241
1084 if (cctx->sptr != (void *)-1) 1242 if (cctx->sptr != (void *)-1)
1085 { 1243 {
1086# if CORO_STACKGUARD 1244 #if CORO_STACKGUARD
1087 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1245 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1088# endif 1246 #endif
1089 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1247 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1090 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1248 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1091 cctx->flags |= CC_MAPPED; 1249 cctx->flags |= CC_MAPPED;
1092 } 1250 }
1093 else 1251 else
1094#endif 1252#endif
1095 { 1253 {
1096 cctx->ssize = coro_stacksize * (long)sizeof (long); 1254 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1097 New (0, cctx->sptr, coro_stacksize, long); 1255 New (0, cctx->sptr, cctx_stacksize, long);
1098 1256
1099 if (!cctx->sptr) 1257 if (!cctx->sptr)
1100 { 1258 {
1101 perror ("FATAL: unable to allocate stack for coroutine"); 1259 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1102 _exit (EXIT_FAILURE); 1260 _exit (EXIT_FAILURE);
1103 } 1261 }
1104 1262
1105 stack_start = cctx->sptr; 1263 stack_start = cctx->sptr;
1106 stack_size = cctx->ssize; 1264 stack_size = cctx->ssize;
1107 } 1265 }
1108 1266
1109 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1267 #if CORO_USE_VALGRIND
1268 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1269 #endif
1270
1110 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1271 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1111 1272
1112 return cctx; 1273 return cctx;
1113} 1274}
1114 1275
… …
1116cctx_destroy (coro_cctx *cctx) 1277cctx_destroy (coro_cctx *cctx)
1117{ 1278{
1118 if (!cctx) 1279 if (!cctx)
1119 return; 1280 return;
1120 1281
1282 assert (cctx != cctx_current);//D temporary
1283
1121 --cctx_count; 1284 --cctx_count;
1285 coro_destroy (&cctx->cctx);
1122 1286
1287 /* coro_transfer creates new, empty cctx's */
1288 if (cctx->sptr)
1289 {
1123#if CORO_USE_VALGRIND 1290 #if CORO_USE_VALGRIND
1124 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1291 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1125#endif 1292 #endif
1126 1293
1127#if HAVE_MMAP 1294#if HAVE_MMAP
1128 if (cctx->flags & CC_MAPPED) 1295 if (cctx->flags & CC_MAPPED)
1129 munmap (cctx->sptr, cctx->ssize); 1296 munmap (cctx->sptr, cctx->ssize);
1130 else 1297 else
1131#endif 1298#endif
1132 Safefree (cctx->sptr); 1299 Safefree (cctx->sptr);
1300 }
1133 1301
1134 Safefree (cctx); 1302 Safefree (cctx);
1135} 1303}
1136 1304
1137/* wether this cctx should be destructed */ 1305/* wether this cctx should be destructed */
1138#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1306#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1139 1307
1140static coro_cctx * 1308static coro_cctx *
1141cctx_get (pTHX) 1309cctx_get (pTHX)
1142{ 1310{
1143 while (expect_true (cctx_first)) 1311 while (expect_true (cctx_first))
… …
1150 return cctx; 1318 return cctx;
1151 1319
1152 cctx_destroy (cctx); 1320 cctx_destroy (cctx);
1153 } 1321 }
1154 1322
1155 return cctx_new (); 1323 return cctx_new_run ();
1156} 1324}
1157 1325
1158static void 1326static void
1159cctx_put (coro_cctx *cctx) 1327cctx_put (coro_cctx *cctx)
1160{ 1328{
1329 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1330
1161 /* free another cctx if overlimit */ 1331 /* free another cctx if overlimit */
1162 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1332 if (expect_false (cctx_idle >= cctx_max_idle))
1163 { 1333 {
1164 coro_cctx *first = cctx_first; 1334 coro_cctx *first = cctx_first;
1165 cctx_first = first->next; 1335 cctx_first = first->next;
1166 --cctx_idle; 1336 --cctx_idle;
1167 1337
… …
1176/** coroutine switching *****************************************************/ 1346/** coroutine switching *****************************************************/
1177 1347
1178static void 1348static void
1179transfer_check (pTHX_ struct coro *prev, struct coro *next) 1349transfer_check (pTHX_ struct coro *prev, struct coro *next)
1180{ 1350{
1351 /* TODO: throwing up here is considered harmful */
1352
1181 if (expect_true (prev != next)) 1353 if (expect_true (prev != next))
1182 { 1354 {
1183 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1355 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1184 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1356 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1185 1357
1186 if (expect_false (next->flags & CF_RUNNING)) 1358 if (expect_false (next->flags & CF_RUNNING))
1187 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1359 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1188 1360
1189 if (expect_false (next->flags & CF_DESTROYED)) 1361 if (expect_false (next->flags & CF_DESTROYED))
1190 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1362 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1191 1363
1192#if !PERL_VERSION_ATLEAST (5,10,0) 1364#if !PERL_VERSION_ATLEAST (5,10,0)
1193 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1365 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1194 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1366 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1195#endif 1367#endif
1196 } 1368 }
1197} 1369}
1198 1370
1199/* always use the TRANSFER macro */ 1371/* always use the TRANSFER macro */
1200static void NOINLINE 1372static void NOINLINE /* noinline so we have a fixed stackframe */
1201transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1373transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1202{ 1374{
1203 dSTACKLEVEL; 1375 dSTACKLEVEL;
1204 static volatile int has_throw;
1205 1376
1206 /* sometimes transfer is only called to set idle_sp */ 1377 /* sometimes transfer is only called to set idle_sp */
1207 if (expect_false (!next)) 1378 if (expect_false (!prev))
1208 { 1379 {
1209 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1380 cctx_current->idle_sp = STACKLEVEL;
1210 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1381 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1211 } 1382 }
1212 else if (expect_true (prev != next)) 1383 else if (expect_true (prev != next))
1213 { 1384 {
1214 coro_cctx *prev__cctx; 1385 coro_cctx *cctx_prev;
1215 1386
1216 if (expect_false (prev->flags & CF_NEW)) 1387 if (expect_false (prev->flags & CF_NEW))
1217 { 1388 {
1218 /* create a new empty context */ 1389 /* create a new empty/source context */
1219 Newz (0, prev->cctx, 1, coro_cctx);
1220 prev->flags &= ~CF_NEW; 1390 prev->flags &= ~CF_NEW;
1221 prev->flags |= CF_RUNNING; 1391 prev->flags |= CF_RUNNING;
1222 } 1392 }
1223 1393
1224 prev->flags &= ~CF_RUNNING; 1394 prev->flags &= ~CF_RUNNING;
1225 next->flags |= CF_RUNNING; 1395 next->flags |= CF_RUNNING;
1226
1227 LOCK;
1228 1396
1229 /* first get rid of the old state */ 1397 /* first get rid of the old state */
1230 save_perl (aTHX_ prev); 1398 save_perl (aTHX_ prev);
1231 1399
1232 if (expect_false (next->flags & CF_NEW)) 1400 if (expect_false (next->flags & CF_NEW))
… …
1237 coro_setup (aTHX_ next); 1405 coro_setup (aTHX_ next);
1238 } 1406 }
1239 else 1407 else
1240 load_perl (aTHX_ next); 1408 load_perl (aTHX_ next);
1241 1409
1242 prev__cctx = prev->cctx; 1410 assert (!prev->cctx);//D temporary
1243 1411
1244 /* possibly "free" the cctx */ 1412 /* possibly untie and reuse the cctx */
1245 if (expect_true ( 1413 if (expect_true (
1246 prev__cctx->idle_sp == STACKLEVEL 1414 cctx_current->idle_sp == STACKLEVEL
1247 && !(prev__cctx->flags & CC_TRACE) 1415 && !(cctx_current->flags & CC_TRACE)
1248 && !force_cctx 1416 && !force_cctx
1249 )) 1417 ))
1250 { 1418 {
1251 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1419 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1252 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1420 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1253 1421
1254 prev->cctx = 0;
1255
1256 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1422 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1257 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1423 /* without this the next cctx_get might destroy the running cctx while still in use */
1258 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1424 if (expect_false (CCTX_EXPIRED (cctx_current)))
1259 if (!next->cctx) 1425 if (expect_true (!next->cctx))
1260 next->cctx = cctx_get (aTHX); 1426 next->cctx = cctx_get (aTHX);
1261 1427
1262 cctx_put (prev__cctx); 1428 cctx_put (cctx_current);
1263 } 1429 }
1430 else
1431 prev->cctx = cctx_current;
1264 1432
1265 ++next->usecount; 1433 ++next->usecount;
1266 1434
1267 if (expect_true (!next->cctx)) 1435 cctx_prev = cctx_current;
1268 next->cctx = cctx_get (aTHX); 1436 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1269 1437
1270 has_throw = !!next->throw; 1438 next->cctx = 0;
1271 1439
1272 if (expect_false (prev__cctx != next->cctx)) 1440 if (expect_false (cctx_prev != cctx_current))
1273 { 1441 {
1274 prev__cctx->top_env = PL_top_env; 1442 cctx_prev->top_env = PL_top_env;
1275 PL_top_env = next->cctx->top_env; 1443 PL_top_env = cctx_current->top_env;
1276 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1444 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1277 } 1445 }
1278 1446
1279 free_coro_mortal (aTHX); 1447 transfer_tail (aTHX);
1280 UNLOCK;
1281
1282 if (expect_false (has_throw))
1283 {
1284 struct coro *coro = SvSTATE (coro_current);
1285
1286 if (coro->throw)
1287 {
1288 SV *exception = coro->throw;
1289 coro->throw = 0;
1290 sv_setsv (ERRSV, exception);
1291 croak (0);
1292 }
1293 }
1294 } 1448 }
1295} 1449}
1296
1297struct transfer_args
1298{
1299 struct coro *prev, *next;
1300};
1301 1450
1302#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1451#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1303#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1452#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1304 1453
1305/** high level stuff ********************************************************/ 1454/** high level stuff ********************************************************/
… …
1307static int 1456static int
1308coro_state_destroy (pTHX_ struct coro *coro) 1457coro_state_destroy (pTHX_ struct coro *coro)
1309{ 1458{
1310 if (coro->flags & CF_DESTROYED) 1459 if (coro->flags & CF_DESTROYED)
1311 return 0; 1460 return 0;
1461
1462 if (coro->on_destroy)
1463 coro->on_destroy (aTHX_ coro);
1312 1464
1313 coro->flags |= CF_DESTROYED; 1465 coro->flags |= CF_DESTROYED;
1314 1466
1315 if (coro->flags & CF_READY) 1467 if (coro->flags & CF_READY)
1316 { 1468 {
1317 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1469 /* reduce nready, as destroying a ready coro effectively unreadies it */
1318 /* alternative: look through all ready queues and remove the coro */ 1470 /* alternative: look through all ready queues and remove the coro */
1319 LOCK;
1320 --coro_nready; 1471 --coro_nready;
1321 UNLOCK;
1322 } 1472 }
1323 else 1473 else
1324 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1474 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1325 1475
1326 if (coro->mainstack && coro->mainstack != main_mainstack) 1476 if (coro->mainstack && coro->mainstack != main_mainstack)
1327 { 1477 {
1328 struct coro temp; 1478 struct coro temp;
1329 1479
1330 if (coro->flags & CF_RUNNING) 1480 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1331 croak ("FATAL: tried to destroy currently running coroutine");
1332 1481
1333 save_perl (aTHX_ &temp); 1482 save_perl (aTHX_ &temp);
1334 load_perl (aTHX_ coro); 1483 load_perl (aTHX_ coro);
1335 1484
1336 coro_destroy (aTHX_ coro); 1485 coro_destruct (aTHX_ coro);
1337 1486
1338 load_perl (aTHX_ &temp); 1487 load_perl (aTHX_ &temp);
1339 1488
1340 coro->slot = 0; 1489 coro->slot = 0;
1341 } 1490 }
1342 1491
1343 cctx_destroy (coro->cctx); 1492 cctx_destroy (coro->cctx);
1493 SvREFCNT_dec (coro->startcv);
1344 SvREFCNT_dec (coro->args); 1494 SvREFCNT_dec (coro->args);
1495 SvREFCNT_dec (CORO_THROW);
1345 1496
1346 if (coro->next) coro->next->prev = coro->prev; 1497 if (coro->next) coro->next->prev = coro->prev;
1347 if (coro->prev) coro->prev->next = coro->next; 1498 if (coro->prev) coro->prev->next = coro->next;
1348 if (coro == coro_first) coro_first = coro->next; 1499 if (coro == coro_first) coro_first = coro->next;
1349 1500
… …
1387# define MGf_DUP 0 1538# define MGf_DUP 0
1388#endif 1539#endif
1389}; 1540};
1390 1541
1391static void 1542static void
1392prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1543prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1393{ 1544{
1394 ta->prev = SvSTATE (prev_sv); 1545 ta->prev = SvSTATE (prev_sv);
1395 ta->next = SvSTATE (next_sv); 1546 ta->next = SvSTATE (next_sv);
1396 TRANSFER_CHECK (*ta); 1547 TRANSFER_CHECK (*ta);
1397} 1548}
1398 1549
1399static void 1550static void
1400api_transfer (SV *prev_sv, SV *next_sv) 1551api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1401{ 1552{
1402 dTHX;
1403 struct transfer_args ta; 1553 struct coro_transfer_args ta;
1404 1554
1405 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1555 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1406 TRANSFER (ta, 1); 1556 TRANSFER (ta, 1);
1407} 1557}
1408 1558
1559/*****************************************************************************/
1560/* gensub: simple closure generation utility */
1561
1562#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1563
1564/* create a closure from XS, returns a code reference */
1565/* the arg can be accessed via GENSUB_ARG from the callback */
1566/* the callback must use dXSARGS/XSRETURN */
1567static SV *
1568gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1569{
1570 CV *cv = (CV *)newSV (0);
1571
1572 sv_upgrade ((SV *)cv, SVt_PVCV);
1573
1574 CvANON_on (cv);
1575 CvISXSUB_on (cv);
1576 CvXSUB (cv) = xsub;
1577 GENSUB_ARG = arg;
1578
1579 return newRV_noinc ((SV *)cv);
1580}
1581
1409/** Coro ********************************************************************/ 1582/** Coro ********************************************************************/
1410 1583
1411static void 1584INLINE void
1412coro_enq (pTHX_ SV *coro_sv) 1585coro_enq (pTHX_ struct coro *coro)
1413{ 1586{
1414 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1587 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1415} 1588}
1416 1589
1417static SV * 1590INLINE SV *
1418coro_deq (pTHX) 1591coro_deq (pTHX)
1419{ 1592{
1420 int prio; 1593 int prio;
1421 1594
1422 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1595 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1425 1598
1426 return 0; 1599 return 0;
1427} 1600}
1428 1601
1429static int 1602static int
1430api_ready (SV *coro_sv) 1603api_ready (pTHX_ SV *coro_sv)
1431{ 1604{
1432 dTHX;
1433 struct coro *coro; 1605 struct coro *coro;
1434 SV *sv_hook; 1606 SV *sv_hook;
1435 void (*xs_hook)(void); 1607 void (*xs_hook)(void);
1436 1608
1437 if (SvROK (coro_sv))
1438 coro_sv = SvRV (coro_sv);
1439
1440 coro = SvSTATE (coro_sv); 1609 coro = SvSTATE (coro_sv);
1441 1610
1442 if (coro->flags & CF_READY) 1611 if (coro->flags & CF_READY)
1443 return 0; 1612 return 0;
1444 1613
1445 coro->flags |= CF_READY; 1614 coro->flags |= CF_READY;
1446 1615
1447 LOCK;
1448
1449 sv_hook = coro_nready ? 0 : coro_readyhook; 1616 sv_hook = coro_nready ? 0 : coro_readyhook;
1450 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1617 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1451 1618
1452 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1619 coro_enq (aTHX_ coro);
1453 ++coro_nready; 1620 ++coro_nready;
1454 1621
1455 UNLOCK;
1456
1457 if (sv_hook) 1622 if (sv_hook)
1458 { 1623 {
1459 dSP; 1624 dSP;
1460 1625
1461 ENTER; 1626 ENTER;
1462 SAVETMPS; 1627 SAVETMPS;
1463 1628
1464 PUSHMARK (SP); 1629 PUSHMARK (SP);
1465 PUTBACK; 1630 PUTBACK;
1466 call_sv (sv_hook, G_DISCARD); 1631 call_sv (sv_hook, G_VOID | G_DISCARD);
1467 SPAGAIN;
1468 1632
1469 FREETMPS; 1633 FREETMPS;
1470 LEAVE; 1634 LEAVE;
1471 } 1635 }
1472 1636
… …
1475 1639
1476 return 1; 1640 return 1;
1477} 1641}
1478 1642
1479static int 1643static int
1480api_is_ready (SV *coro_sv) 1644api_is_ready (pTHX_ SV *coro_sv)
1481{ 1645{
1482 dTHX;
1483 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1646 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1484} 1647}
1485 1648
1486static void 1649/* expects to own a reference to next->hv */
1650INLINE void
1487prepare_schedule (pTHX_ struct transfer_args *ta) 1651prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1488{ 1652{
1489 SV *prev_sv, *next_sv;
1490
1491 for (;;)
1492 {
1493 LOCK;
1494 next_sv = coro_deq (aTHX);
1495
1496 /* nothing to schedule: call the idle handler */
1497 if (expect_false (!next_sv))
1498 {
1499 dSP;
1500 UNLOCK;
1501
1502 ENTER;
1503 SAVETMPS;
1504
1505 PUSHMARK (SP);
1506 PUTBACK;
1507 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1508 SPAGAIN;
1509
1510 FREETMPS;
1511 LEAVE;
1512 continue;
1513 }
1514
1515 ta->next = SvSTATE (next_sv);
1516
1517 /* cannot transfer to destroyed coros, skip and look for next */
1518 if (expect_false (ta->next->flags & CF_DESTROYED))
1519 {
1520 UNLOCK;
1521 SvREFCNT_dec (next_sv);
1522 /* coro_nready is already taken care of by destroy */
1523 continue;
1524 }
1525
1526 --coro_nready;
1527 UNLOCK;
1528 break;
1529 }
1530
1531 /* free this only after the transfer */
1532 prev_sv = SvRV (coro_current); 1653 SV *prev_sv = SvRV (coro_current);
1654
1533 ta->prev = SvSTATE (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1656 ta->next = next;
1657
1534 TRANSFER_CHECK (*ta); 1658 TRANSFER_CHECK (*ta);
1535 assert (ta->next->flags & CF_READY); 1659
1536 ta->next->flags &= ~CF_READY;
1537 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, (SV *)next->hv);
1538 1661
1539 LOCK;
1540 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1541 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1542 UNLOCK;
1543} 1664}
1544 1665
1545static void 1666static void
1667prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1668{
1669 for (;;)
1670 {
1671 SV *next_sv = coro_deq (aTHX);
1672
1673 if (expect_true (next_sv))
1674 {
1675 struct coro *next = SvSTATE_hv (next_sv);
1676
1677 /* cannot transfer to destroyed coros, skip and look for next */
1678 if (expect_false (next->flags & CF_DESTROYED))
1679 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1680 else
1681 {
1682 next->flags &= ~CF_READY;
1683 --coro_nready;
1684
1685 prepare_schedule_to (aTHX_ ta, next);
1686 break;
1687 }
1688 }
1689 else
1690 {
1691 /* nothing to schedule: call the idle handler */
1692 if (SvROK (sv_idle)
1693 && SvOBJECT (SvRV (sv_idle)))
1694 {
1695 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1696 api_ready (aTHX_ SvRV (sv_idle));
1697 --coro_nready;
1698 }
1699 else
1700 {
1701 dSP;
1702
1703 ENTER;
1704 SAVETMPS;
1705
1706 PUSHMARK (SP);
1707 PUTBACK;
1708 call_sv (sv_idle, G_VOID | G_DISCARD);
1709
1710 FREETMPS;
1711 LEAVE;
1712 }
1713 }
1714 }
1715}
1716
1717INLINE void
1546prepare_cede (pTHX_ struct transfer_args *ta) 1718prepare_cede (pTHX_ struct coro_transfer_args *ta)
1547{ 1719{
1548 api_ready (coro_current); 1720 api_ready (aTHX_ coro_current);
1549 prepare_schedule (aTHX_ ta); 1721 prepare_schedule (aTHX_ ta);
1550} 1722}
1551 1723
1724INLINE void
1725prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1726{
1727 SV *prev = SvRV (coro_current);
1728
1729 if (coro_nready)
1730 {
1731 prepare_schedule (aTHX_ ta);
1732 api_ready (aTHX_ prev);
1733 }
1734 else
1735 prepare_nop (aTHX_ ta);
1736}
1737
1738static void
1739api_schedule (pTHX)
1740{
1741 struct coro_transfer_args ta;
1742
1743 prepare_schedule (aTHX_ &ta);
1744 TRANSFER (ta, 1);
1745}
1746
1747static void
1748api_schedule_to (pTHX_ SV *coro_sv)
1749{
1750 struct coro_transfer_args ta;
1751 struct coro *next = SvSTATE (coro_sv);
1752
1753 SvREFCNT_inc_NN (coro_sv);
1754 prepare_schedule_to (aTHX_ &ta, next);
1755}
1756
1552static int 1757static int
1553prepare_cede_notself (pTHX_ struct transfer_args *ta) 1758api_cede (pTHX)
1554{ 1759{
1555 if (coro_nready) 1760 struct coro_transfer_args ta;
1556 { 1761
1557 SV *prev = SvRV (coro_current);
1558 prepare_schedule (aTHX_ ta); 1762 prepare_cede (aTHX_ &ta);
1559 api_ready (prev); 1763
1764 if (expect_true (ta.prev != ta.next))
1765 {
1766 TRANSFER (ta, 1);
1560 return 1; 1767 return 1;
1561 } 1768 }
1562 else 1769 else
1563 return 0; 1770 return 0;
1564} 1771}
1565 1772
1566static void
1567api_schedule (void)
1568{
1569 dTHX;
1570 struct transfer_args ta;
1571
1572 prepare_schedule (aTHX_ &ta);
1573 TRANSFER (ta, 1);
1574}
1575
1576static int 1773static int
1577api_cede (void) 1774api_cede_notself (pTHX)
1578{ 1775{
1579 dTHX; 1776 if (coro_nready)
1777 {
1580 struct transfer_args ta; 1778 struct coro_transfer_args ta;
1581 1779
1582 prepare_cede (aTHX_ &ta); 1780 prepare_cede_notself (aTHX_ &ta);
1583
1584 if (expect_true (ta.prev != ta.next))
1585 {
1586 TRANSFER (ta, 1); 1781 TRANSFER (ta, 1);
1587 return 1; 1782 return 1;
1588 } 1783 }
1589 else 1784 else
1590 return 0; 1785 return 0;
1591} 1786}
1592 1787
1593static int 1788static void
1594api_cede_notself (void)
1595{
1596 dTHX;
1597 struct transfer_args ta;
1598
1599 if (prepare_cede_notself (aTHX_ &ta))
1600 {
1601 TRANSFER (ta, 1);
1602 return 1;
1603 }
1604 else
1605 return 0;
1606}
1607
1608static void
1609api_trace (SV *coro_sv, int flags) 1789api_trace (pTHX_ SV *coro_sv, int flags)
1610{ 1790{
1611 dTHX;
1612 struct coro *coro = SvSTATE (coro_sv); 1791 struct coro *coro = SvSTATE (coro_sv);
1613 1792
1793 if (coro->flags & CF_RUNNING)
1794 croak ("cannot enable tracing on a running coroutine, caught");
1795
1614 if (flags & CC_TRACE) 1796 if (flags & CC_TRACE)
1615 { 1797 {
1616 if (!coro->cctx) 1798 if (!coro->cctx)
1617 coro->cctx = cctx_new (); 1799 coro->cctx = cctx_new_run ();
1618 else if (!(coro->cctx->flags & CC_TRACE)) 1800 else if (!(coro->cctx->flags & CC_TRACE))
1619 croak ("cannot enable tracing on coroutine with custom stack"); 1801 croak ("cannot enable tracing on coroutine with custom stack, caught");
1620 1802
1621 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1803 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1622 } 1804 }
1623 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1805 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1624 { 1806 {
… …
1629 else 1811 else
1630 coro->slot->runops = RUNOPS_DEFAULT; 1812 coro->slot->runops = RUNOPS_DEFAULT;
1631 } 1813 }
1632} 1814}
1633 1815
1816static void
1817coro_call_on_destroy (pTHX_ struct coro *coro)
1818{
1819 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1820 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1821
1822 if (on_destroyp)
1823 {
1824 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1825
1826 while (AvFILLp (on_destroy) >= 0)
1827 {
1828 dSP; /* don't disturb outer sp */
1829 SV *cb = av_pop (on_destroy);
1830
1831 PUSHMARK (SP);
1832
1833 if (statusp)
1834 {
1835 int i;
1836 AV *status = (AV *)SvRV (*statusp);
1837 EXTEND (SP, AvFILLp (status) + 1);
1838
1839 for (i = 0; i <= AvFILLp (status); ++i)
1840 PUSHs (AvARRAY (status)[i]);
1841 }
1842
1843 PUTBACK;
1844 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1845 }
1846 }
1847}
1848
1849static void
1850slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1851{
1852 int i;
1853 HV *hv = (HV *)SvRV (coro_current);
1854 AV *av = newAV ();
1855
1856 av_extend (av, items - 1);
1857 for (i = 0; i < items; ++i)
1858 av_push (av, SvREFCNT_inc_NN (arg [i]));
1859
1860 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1861
1862 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1863 api_ready (aTHX_ sv_manager);
1864
1865 frame->prepare = prepare_schedule;
1866 frame->check = slf_check_repeat;
1867}
1868
1869/*****************************************************************************/
1870/* async pool handler */
1871
1634static int 1872static int
1635coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1873slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1636{ 1874{
1637 AV *padlist; 1875 HV *hv = (HV *)SvRV (coro_current);
1638 AV *av = (AV *)mg->mg_obj; 1876 struct coro *coro = (struct coro *)frame->data;
1639 1877
1640 abort (); 1878 if (!coro->invoke_cb)
1879 return 1; /* loop till we have invoke */
1880 else
1881 {
1882 hv_store (hv, "desc", sizeof ("desc") - 1,
1883 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1884
1885 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1886
1887 {
1888 dSP;
1889 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1890 PUTBACK;
1891 }
1892
1893 SvREFCNT_dec (GvAV (PL_defgv));
1894 GvAV (PL_defgv) = coro->invoke_av;
1895 coro->invoke_av = 0;
1896
1897 return 0;
1898 }
1899}
1900
1901static void
1902slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1903{
1904 HV *hv = (HV *)SvRV (coro_current);
1905 struct coro *coro = SvSTATE_hv ((SV *)hv);
1906
1907 if (expect_true (coro->saved_deffh))
1908 {
1909 /* subsequent iteration */
1910 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1911 coro->saved_deffh = 0;
1912
1913 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1914 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1915 {
1916 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1917 coro->invoke_av = newAV ();
1918
1919 frame->prepare = prepare_nop;
1920 }
1921 else
1922 {
1923 av_clear (GvAV (PL_defgv));
1924 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1925
1926 coro->prio = 0;
1927
1928 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1929 api_trace (aTHX_ coro_current, 0);
1930
1931 frame->prepare = prepare_schedule;
1932 av_push (av_async_pool, SvREFCNT_inc (hv));
1933 }
1934 }
1935 else
1936 {
1937 /* first iteration, simply fall through */
1938 frame->prepare = prepare_nop;
1939 }
1940
1941 frame->check = slf_check_pool_handler;
1942 frame->data = (void *)coro;
1943}
1944
1945/*****************************************************************************/
1946/* rouse callback */
1947
1948#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1949
1950static void
1951coro_rouse_callback (pTHX_ CV *cv)
1952{
1953 dXSARGS;
1954 SV *data = (SV *)GENSUB_ARG;
1955
1956 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1957 {
1958 /* first call, set args */
1959 AV *av = newAV ();
1960 SV *coro = SvRV (data);
1961
1962 SvRV_set (data, (SV *)av);
1963 api_ready (aTHX_ coro);
1964 SvREFCNT_dec (coro);
1965
1966 /* better take a full copy of the arguments */
1967 while (items--)
1968 av_store (av, items, newSVsv (ST (items)));
1969 }
1970
1971 XSRETURN_EMPTY;
1972}
1973
1974static int
1975slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1976{
1977 SV *data = (SV *)frame->data;
1978
1979 if (CORO_THROW)
1980 return 0;
1981
1982 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1983 return 1;
1984
1985 /* now push all results on the stack */
1986 {
1987 dSP;
1988 AV *av = (AV *)SvRV (data);
1989 int i;
1990
1991 EXTEND (SP, AvFILLp (av) + 1);
1992 for (i = 0; i <= AvFILLp (av); ++i)
1993 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1994
1995 /* we have stolen the elements, so ste length to zero and free */
1996 AvFILLp (av) = -1;
1997 av_undef (av);
1998
1999 PUTBACK;
2000 }
1641 2001
1642 return 0; 2002 return 0;
1643} 2003}
1644 2004
1645static MGVTBL coro_gensub_vtbl = { 2005static void
1646 0, 0, 0, 0, 2006slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1647 coro_gensub_free 2007{
2008 SV *cb;
2009
2010 if (items)
2011 cb = arg [0];
2012 else
2013 {
2014 struct coro *coro = SvSTATE_current;
2015
2016 if (!coro->rouse_cb)
2017 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2018
2019 cb = sv_2mortal (coro->rouse_cb);
2020 coro->rouse_cb = 0;
2021 }
2022
2023 if (!SvROK (cb)
2024 || SvTYPE (SvRV (cb)) != SVt_PVCV
2025 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2026 croak ("Coro::rouse_wait called with illegal callback argument,");
2027
2028 {
2029 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2030 SV *data = (SV *)GENSUB_ARG;
2031
2032 frame->data = (void *)data;
2033 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2034 frame->check = slf_check_rouse_wait;
2035 }
2036}
2037
2038static SV *
2039coro_new_rouse_cb (pTHX)
2040{
2041 HV *hv = (HV *)SvRV (coro_current);
2042 struct coro *coro = SvSTATE_hv (hv);
2043 SV *data = newRV_inc ((SV *)hv);
2044 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2045
2046 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2047 SvREFCNT_dec (data); /* magicext increases the refcount */
2048
2049 SvREFCNT_dec (coro->rouse_cb);
2050 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2051
2052 return cb;
2053}
2054
2055/*****************************************************************************/
2056/* schedule-like-function opcode (SLF) */
2057
2058static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2059static const CV *slf_cv;
2060static SV **slf_argv;
2061static int slf_argc, slf_arga; /* count, allocated */
2062static I32 slf_ax; /* top of stack, for restore */
2063
2064/* this restores the stack in the case we patched the entersub, to */
2065/* recreate the stack frame as perl will on following calls */
2066/* since entersub cleared the stack */
2067static OP *
2068pp_restore (pTHX)
2069{
2070 int i;
2071 SV **SP = PL_stack_base + slf_ax;
2072
2073 PUSHMARK (SP);
2074
2075 EXTEND (SP, slf_argc + 1);
2076
2077 for (i = 0; i < slf_argc; ++i)
2078 PUSHs (sv_2mortal (slf_argv [i]));
2079
2080 PUSHs ((SV *)CvGV (slf_cv));
2081
2082 RETURNOP (slf_restore.op_first);
2083}
2084
2085static void
2086slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2087{
2088 SV **arg = (SV **)slf_frame.data;
2089
2090 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2091}
2092
2093static void
2094slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095{
2096 if (items != 2)
2097 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2098
2099 frame->prepare = slf_prepare_transfer;
2100 frame->check = slf_check_nop;
2101 frame->data = (void *)arg; /* let's hope it will stay valid */
2102}
2103
2104static void
2105slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2106{
2107 frame->prepare = prepare_schedule;
2108 frame->check = slf_check_nop;
2109}
2110
2111static void
2112slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2113{
2114 struct coro *next = (struct coro *)slf_frame.data;
2115
2116 SvREFCNT_inc_NN (next->hv);
2117 prepare_schedule_to (aTHX_ ta, next);
2118}
2119
2120static void
2121slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2122{
2123 if (!items)
2124 croak ("Coro::schedule_to expects a coroutine argument, caught");
2125
2126 frame->data = (void *)SvSTATE (arg [0]);
2127 frame->prepare = slf_prepare_schedule_to;
2128 frame->check = slf_check_nop;
2129}
2130
2131static void
2132slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2133{
2134 api_ready (aTHX_ SvRV (coro_current));
2135
2136 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2137}
2138
2139static void
2140slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_cede;
2143 frame->check = slf_check_nop;
2144}
2145
2146static void
2147slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2148{
2149 frame->prepare = prepare_cede_notself;
2150 frame->check = slf_check_nop;
2151}
2152
2153/*
2154 * these not obviously related functions are all rolled into one
2155 * function to increase chances that they all will call transfer with the same
2156 * stack offset
2157 * SLF stands for "schedule-like-function".
2158 */
2159static OP *
2160pp_slf (pTHX)
2161{
2162 I32 checkmark; /* mark SP to see how many elements check has pushed */
2163
2164 /* set up the slf frame, unless it has already been set-up */
2165 /* the latter happens when a new coro has been started */
2166 /* or when a new cctx was attached to an existing coroutine */
2167 if (expect_true (!slf_frame.prepare))
2168 {
2169 /* first iteration */
2170 dSP;
2171 SV **arg = PL_stack_base + TOPMARK + 1;
2172 int items = SP - arg; /* args without function object */
2173 SV *gv = *sp;
2174
2175 /* do a quick consistency check on the "function" object, and if it isn't */
2176 /* for us, divert to the real entersub */
2177 if (SvTYPE (gv) != SVt_PVGV
2178 || !GvCV (gv)
2179 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2180 return PL_ppaddr[OP_ENTERSUB](aTHX);
2181
2182 if (!(PL_op->op_flags & OPf_STACKED))
2183 {
2184 /* ampersand-form of call, use @_ instead of stack */
2185 AV *av = GvAV (PL_defgv);
2186 arg = AvARRAY (av);
2187 items = AvFILLp (av) + 1;
2188 }
2189
2190 /* now call the init function, which needs to set up slf_frame */
2191 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2192 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2193
2194 /* pop args */
2195 SP = PL_stack_base + POPMARK;
2196
2197 PUTBACK;
2198 }
2199
2200 /* now that we have a slf_frame, interpret it! */
2201 /* we use a callback system not to make the code needlessly */
2202 /* complicated, but so we can run multiple perl coros from one cctx */
2203
2204 do
2205 {
2206 struct coro_transfer_args ta;
2207
2208 slf_frame.prepare (aTHX_ &ta);
2209 TRANSFER (ta, 0);
2210
2211 checkmark = PL_stack_sp - PL_stack_base;
2212 }
2213 while (slf_frame.check (aTHX_ &slf_frame));
2214
2215 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2216
2217 /* exception handling */
2218 if (expect_false (CORO_THROW))
2219 {
2220 SV *exception = sv_2mortal (CORO_THROW);
2221
2222 CORO_THROW = 0;
2223 sv_setsv (ERRSV, exception);
2224 croak (0);
2225 }
2226
2227 /* return value handling - mostly like entersub */
2228 /* make sure we put something on the stack in scalar context */
2229 if (GIMME_V == G_SCALAR)
2230 {
2231 dSP;
2232 SV **bot = PL_stack_base + checkmark;
2233
2234 if (sp == bot) /* too few, push undef */
2235 bot [1] = &PL_sv_undef;
2236 else if (sp != bot + 1) /* too many, take last one */
2237 bot [1] = *sp;
2238
2239 SP = bot + 1;
2240
2241 PUTBACK;
2242 }
2243
2244 return NORMAL;
2245}
2246
2247static void
2248api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2249{
2250 int i;
2251 SV **arg = PL_stack_base + ax;
2252 int items = PL_stack_sp - arg + 1;
2253
2254 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2255
2256 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2257 && PL_op->op_ppaddr != pp_slf)
2258 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2259
2260 CvFLAGS (cv) |= CVf_SLF;
2261 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2262 slf_cv = cv;
2263
2264 /* we patch the op, and then re-run the whole call */
2265 /* we have to put the same argument on the stack for this to work */
2266 /* and this will be done by pp_restore */
2267 slf_restore.op_next = (OP *)&slf_restore;
2268 slf_restore.op_type = OP_CUSTOM;
2269 slf_restore.op_ppaddr = pp_restore;
2270 slf_restore.op_first = PL_op;
2271
2272 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2273
2274 if (PL_op->op_flags & OPf_STACKED)
2275 {
2276 if (items > slf_arga)
2277 {
2278 slf_arga = items;
2279 free (slf_argv);
2280 slf_argv = malloc (slf_arga * sizeof (SV *));
2281 }
2282
2283 slf_argc = items;
2284
2285 for (i = 0; i < items; ++i)
2286 slf_argv [i] = SvREFCNT_inc (arg [i]);
2287 }
2288 else
2289 slf_argc = 0;
2290
2291 PL_op->op_ppaddr = pp_slf;
2292 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2293
2294 PL_op = (OP *)&slf_restore;
2295}
2296
2297/*****************************************************************************/
2298/* PerlIO::cede */
2299
2300typedef struct
2301{
2302 PerlIOBuf base;
2303 NV next, every;
2304} PerlIOCede;
2305
2306static IV
2307PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2308{
2309 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2310
2311 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2312 self->next = nvtime () + self->every;
2313
2314 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2315}
2316
2317static SV *
2318PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2319{
2320 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2321
2322 return newSVnv (self->every);
2323}
2324
2325static IV
2326PerlIOCede_flush (pTHX_ PerlIO *f)
2327{
2328 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2329 double now = nvtime ();
2330
2331 if (now >= self->next)
2332 {
2333 api_cede (aTHX);
2334 self->next = now + self->every;
2335 }
2336
2337 return PerlIOBuf_flush (aTHX_ f);
2338}
2339
2340static PerlIO_funcs PerlIO_cede =
2341{
2342 sizeof(PerlIO_funcs),
2343 "cede",
2344 sizeof(PerlIOCede),
2345 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2346 PerlIOCede_pushed,
2347 PerlIOBuf_popped,
2348 PerlIOBuf_open,
2349 PerlIOBase_binmode,
2350 PerlIOCede_getarg,
2351 PerlIOBase_fileno,
2352 PerlIOBuf_dup,
2353 PerlIOBuf_read,
2354 PerlIOBuf_unread,
2355 PerlIOBuf_write,
2356 PerlIOBuf_seek,
2357 PerlIOBuf_tell,
2358 PerlIOBuf_close,
2359 PerlIOCede_flush,
2360 PerlIOBuf_fill,
2361 PerlIOBase_eof,
2362 PerlIOBase_error,
2363 PerlIOBase_clearerr,
2364 PerlIOBase_setlinebuf,
2365 PerlIOBuf_get_base,
2366 PerlIOBuf_bufsiz,
2367 PerlIOBuf_get_ptr,
2368 PerlIOBuf_get_cnt,
2369 PerlIOBuf_set_ptrcnt,
1648}; 2370};
1649 2371
2372/*****************************************************************************/
2373/* Coro::Semaphore & Coro::Signal */
2374
2375static SV *
2376coro_waitarray_new (pTHX_ int count)
2377{
2378 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2379 AV *av = newAV ();
2380 SV **ary;
2381
2382 /* unfortunately, building manually saves memory */
2383 Newx (ary, 2, SV *);
2384 AvALLOC (av) = ary;
2385#if PERL_VERSION_ATLEAST (5,10,0)
2386 AvARRAY (av) = ary;
2387#else
2388 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2389 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2390 SvPVX ((SV *)av) = (char *)ary;
2391#endif
2392 AvMAX (av) = 1;
2393 AvFILLp (av) = 0;
2394 ary [0] = newSViv (count);
2395
2396 return newRV_noinc ((SV *)av);
2397}
2398
2399/* semaphore */
2400
2401static void
2402coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2403{
2404 SV *count_sv = AvARRAY (av)[0];
2405 IV count = SvIVX (count_sv);
2406
2407 count += adjust;
2408 SvIVX (count_sv) = count;
2409
2410 /* now wake up as many waiters as are expected to lock */
2411 while (count > 0 && AvFILLp (av) > 0)
2412 {
2413 SV *cb;
2414
2415 /* swap first two elements so we can shift a waiter */
2416 AvARRAY (av)[0] = AvARRAY (av)[1];
2417 AvARRAY (av)[1] = count_sv;
2418 cb = av_shift (av);
2419
2420 if (SvOBJECT (cb))
2421 {
2422 api_ready (aTHX_ cb);
2423 --count;
2424 }
2425 else if (SvTYPE (cb) == SVt_PVCV)
2426 {
2427 dSP;
2428 PUSHMARK (SP);
2429 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2430 PUTBACK;
2431 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2432 }
2433
2434 SvREFCNT_dec (cb);
2435 }
2436}
2437
2438static void
2439coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2440{
2441 /* call $sem->adjust (0) to possibly wake up some other waiters */
2442 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2443}
2444
2445static int
2446slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2447{
2448 AV *av = (AV *)frame->data;
2449 SV *count_sv = AvARRAY (av)[0];
2450
2451 /* if we are about to throw, don't actually acquire the lock, just throw */
2452 if (CORO_THROW)
2453 return 0;
2454 else if (SvIVX (count_sv) > 0)
2455 {
2456 SvSTATE_current->on_destroy = 0;
2457
2458 if (acquire)
2459 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2460 else
2461 coro_semaphore_adjust (aTHX_ av, 0);
2462
2463 return 0;
2464 }
2465 else
2466 {
2467 int i;
2468 /* if we were woken up but can't down, we look through the whole */
2469 /* waiters list and only add us if we aren't in there already */
2470 /* this avoids some degenerate memory usage cases */
2471
2472 for (i = 1; i <= AvFILLp (av); ++i)
2473 if (AvARRAY (av)[i] == SvRV (coro_current))
2474 return 1;
2475
2476 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2477 return 1;
2478 }
2479}
2480
2481static int
2482slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2483{
2484 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2485}
2486
2487static int
2488slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2489{
2490 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2491}
2492
2493static void
2494slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2495{
2496 AV *av = (AV *)SvRV (arg [0]);
2497
2498 if (SvIVX (AvARRAY (av)[0]) > 0)
2499 {
2500 frame->data = (void *)av;
2501 frame->prepare = prepare_nop;
2502 }
2503 else
2504 {
2505 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2506
2507 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2508 frame->prepare = prepare_schedule;
2509
2510 /* to avoid race conditions when a woken-up coro gets terminated */
2511 /* we arrange for a temporary on_destroy that calls adjust (0) */
2512 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2513 }
2514}
2515
2516static void
2517slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2518{
2519 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2520 frame->check = slf_check_semaphore_down;
2521}
2522
2523static void
2524slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2525{
2526 if (items >= 2)
2527 {
2528 /* callback form */
2529 AV *av = (AV *)SvRV (arg [0]);
2530 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2531
2532 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2533
2534 if (SvIVX (AvARRAY (av)[0]) > 0)
2535 coro_semaphore_adjust (aTHX_ av, 0);
2536
2537 frame->prepare = prepare_nop;
2538 frame->check = slf_check_nop;
2539 }
2540 else
2541 {
2542 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2543 frame->check = slf_check_semaphore_wait;
2544 }
2545}
2546
2547/* signal */
2548
2549static void
2550coro_signal_wake (pTHX_ AV *av, int count)
2551{
2552 SvIVX (AvARRAY (av)[0]) = 0;
2553
2554 /* now signal count waiters */
2555 while (count > 0 && AvFILLp (av) > 0)
2556 {
2557 SV *cb;
2558
2559 /* swap first two elements so we can shift a waiter */
2560 cb = AvARRAY (av)[0];
2561 AvARRAY (av)[0] = AvARRAY (av)[1];
2562 AvARRAY (av)[1] = cb;
2563
2564 cb = av_shift (av);
2565
2566 api_ready (aTHX_ cb);
2567 sv_setiv (cb, 0); /* signal waiter */
2568 SvREFCNT_dec (cb);
2569
2570 --count;
2571 }
2572}
2573
2574static int
2575slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2576{
2577 /* if we are about to throw, also stop waiting */
2578 return SvROK ((SV *)frame->data) && !CORO_THROW;
2579}
2580
2581static void
2582slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2583{
2584 AV *av = (AV *)SvRV (arg [0]);
2585
2586 if (SvIVX (AvARRAY (av)[0]))
2587 {
2588 SvIVX (AvARRAY (av)[0]) = 0;
2589 frame->prepare = prepare_nop;
2590 frame->check = slf_check_nop;
2591 }
2592 else
2593 {
2594 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2595
2596 av_push (av, waiter);
2597
2598 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2599 frame->prepare = prepare_schedule;
2600 frame->check = slf_check_signal_wait;
2601 }
2602}
2603
2604/*****************************************************************************/
2605/* Coro::AIO */
2606
2607#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2608
2609/* helper storage struct */
2610struct io_state
2611{
2612 int errorno;
2613 I32 laststype; /* U16 in 5.10.0 */
2614 int laststatval;
2615 Stat_t statcache;
2616};
2617
2618static void
2619coro_aio_callback (pTHX_ CV *cv)
2620{
2621 dXSARGS;
2622 AV *state = (AV *)GENSUB_ARG;
2623 SV *coro = av_pop (state);
2624 SV *data_sv = newSV (sizeof (struct io_state));
2625
2626 av_extend (state, items - 1);
2627
2628 sv_upgrade (data_sv, SVt_PV);
2629 SvCUR_set (data_sv, sizeof (struct io_state));
2630 SvPOK_only (data_sv);
2631
2632 {
2633 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2634
2635 data->errorno = errno;
2636 data->laststype = PL_laststype;
2637 data->laststatval = PL_laststatval;
2638 data->statcache = PL_statcache;
2639 }
2640
2641 /* now build the result vector out of all the parameters and the data_sv */
2642 {
2643 int i;
2644
2645 for (i = 0; i < items; ++i)
2646 av_push (state, SvREFCNT_inc_NN (ST (i)));
2647 }
2648
2649 av_push (state, data_sv);
2650
2651 api_ready (aTHX_ coro);
2652 SvREFCNT_dec (coro);
2653 SvREFCNT_dec ((AV *)state);
2654}
2655
2656static int
2657slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2658{
2659 AV *state = (AV *)frame->data;
2660
2661 /* if we are about to throw, return early */
2662 /* this does not cancel the aio request, but at least */
2663 /* it quickly returns */
2664 if (CORO_THROW)
2665 return 0;
2666
2667 /* one element that is an RV? repeat! */
2668 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2669 return 1;
2670
2671 /* restore status */
2672 {
2673 SV *data_sv = av_pop (state);
2674 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2675
2676 errno = data->errorno;
2677 PL_laststype = data->laststype;
2678 PL_laststatval = data->laststatval;
2679 PL_statcache = data->statcache;
2680
2681 SvREFCNT_dec (data_sv);
2682 }
2683
2684 /* push result values */
2685 {
2686 dSP;
2687 int i;
2688
2689 EXTEND (SP, AvFILLp (state) + 1);
2690 for (i = 0; i <= AvFILLp (state); ++i)
2691 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2692
2693 PUTBACK;
2694 }
2695
2696 return 0;
2697}
2698
2699static void
2700slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2701{
2702 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2703 SV *coro_hv = SvRV (coro_current);
2704 struct coro *coro = SvSTATE_hv (coro_hv);
2705
2706 /* put our coroutine id on the state arg */
2707 av_push (state, SvREFCNT_inc_NN (coro_hv));
2708
2709 /* first see whether we have a non-zero priority and set it as AIO prio */
2710 if (coro->prio)
2711 {
2712 dSP;
2713
2714 static SV *prio_cv;
2715 static SV *prio_sv;
2716
2717 if (expect_false (!prio_cv))
2718 {
2719 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2720 prio_sv = newSViv (0);
2721 }
2722
2723 PUSHMARK (SP);
2724 sv_setiv (prio_sv, coro->prio);
2725 XPUSHs (prio_sv);
2726
2727 PUTBACK;
2728 call_sv (prio_cv, G_VOID | G_DISCARD);
2729 }
2730
2731 /* now call the original request */
2732 {
2733 dSP;
2734 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2735 int i;
2736
2737 PUSHMARK (SP);
2738
2739 /* first push all args to the stack */
2740 EXTEND (SP, items + 1);
2741
2742 for (i = 0; i < items; ++i)
2743 PUSHs (arg [i]);
2744
2745 /* now push the callback closure */
2746 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2747
2748 /* now call the AIO function - we assume our request is uncancelable */
2749 PUTBACK;
2750 call_sv ((SV *)req, G_VOID | G_DISCARD);
2751 }
2752
2753 /* now that the requets is going, we loop toll we have a result */
2754 frame->data = (void *)state;
2755 frame->prepare = prepare_schedule;
2756 frame->check = slf_check_aio_req;
2757}
2758
2759static void
2760coro_aio_req_xs (pTHX_ CV *cv)
2761{
2762 dXSARGS;
2763
2764 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2765
2766 XSRETURN_EMPTY;
2767}
2768
2769/*****************************************************************************/
2770
2771#if CORO_CLONE
2772# include "clone.c"
2773#endif
2774
1650MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2775MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1651 2776
1652PROTOTYPES: DISABLE 2777PROTOTYPES: DISABLE
1653 2778
1654BOOT: 2779BOOT:
1655{ 2780{
1656#ifdef USE_ITHREADS 2781#ifdef USE_ITHREADS
1657 MUTEX_INIT (&coro_mutex); 2782# if CORO_PTHREAD
2783 coro_thx = PERL_GET_CONTEXT;
2784# endif
1658#endif 2785#endif
1659 BOOT_PAGESIZE; 2786 BOOT_PAGESIZE;
2787
2788 cctx_current = cctx_new_empty ();
1660 2789
1661 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2790 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1662 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2791 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1663 2792
1664 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2793 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1680 main_top_env = PL_top_env; 2809 main_top_env = PL_top_env;
1681 2810
1682 while (main_top_env->je_prev) 2811 while (main_top_env->je_prev)
1683 main_top_env = main_top_env->je_prev; 2812 main_top_env = main_top_env->je_prev;
1684 2813
2814 {
2815 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2816
2817 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2818 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2819
2820 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2821 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2822 }
2823
1685 coroapi.ver = CORO_API_VERSION; 2824 coroapi.ver = CORO_API_VERSION;
1686 coroapi.rev = CORO_API_REVISION; 2825 coroapi.rev = CORO_API_REVISION;
2826
1687 coroapi.transfer = api_transfer; 2827 coroapi.transfer = api_transfer;
2828
2829 coroapi.sv_state = SvSTATE_;
2830 coroapi.execute_slf = api_execute_slf;
2831 coroapi.prepare_nop = prepare_nop;
2832 coroapi.prepare_schedule = prepare_schedule;
2833 coroapi.prepare_cede = prepare_cede;
2834 coroapi.prepare_cede_notself = prepare_cede_notself;
2835
2836 {
2837 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2838
2839 if (!svp) croak ("Time::HiRes is required");
2840 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2841
2842 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2843 }
1688 2844
1689 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2845 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1690} 2846}
1691 2847
1692SV * 2848SV *
1693new (char *klass, ...) 2849new (char *klass, ...)
2850 ALIAS:
2851 Coro::new = 1
1694 CODE: 2852 CODE:
1695{ 2853{
1696 struct coro *coro; 2854 struct coro *coro;
1697 MAGIC *mg; 2855 MAGIC *mg;
1698 HV *hv; 2856 HV *hv;
2857 CV *cb;
1699 int i; 2858 int i;
2859
2860 if (items > 1)
2861 {
2862 cb = coro_sv_2cv (aTHX_ ST (1));
2863
2864 if (!ix)
2865 {
2866 if (CvISXSUB (cb))
2867 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2868
2869 if (!CvROOT (cb))
2870 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2871 }
2872 }
1700 2873
1701 Newz (0, coro, 1, struct coro); 2874 Newz (0, coro, 1, struct coro);
1702 coro->args = newAV (); 2875 coro->args = newAV ();
1703 coro->flags = CF_NEW; 2876 coro->flags = CF_NEW;
1704 2877
… …
1709 coro->hv = hv = newHV (); 2882 coro->hv = hv = newHV ();
1710 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2883 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1711 mg->mg_flags |= MGf_DUP; 2884 mg->mg_flags |= MGf_DUP;
1712 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2885 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1713 2886
2887 if (items > 1)
2888 {
1714 av_extend (coro->args, items - 1); 2889 av_extend (coro->args, items - 1 + ix - 1);
2890
2891 if (ix)
2892 {
2893 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2894 cb = cv_coro_run;
2895 }
2896
2897 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2898
1715 for (i = 1; i < items; i++) 2899 for (i = 2; i < items; i++)
1716 av_push (coro->args, newSVsv (ST (i))); 2900 av_push (coro->args, newSVsv (ST (i)));
2901 }
1717} 2902}
1718 OUTPUT: 2903 OUTPUT:
1719 RETVAL 2904 RETVAL
1720 2905
1721# these not obviously related functions are all rolled into the same xs
1722# function to increase chances that they all will call transfer with the same
1723# stack offset
1724void 2906void
1725_set_stacklevel (...) 2907transfer (...)
1726 ALIAS: 2908 PROTOTYPE: $$
1727 Coro::State::transfer = 1 2909 CODE:
1728 Coro::schedule = 2 2910 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1729 Coro::cede = 3
1730 Coro::cede_notself = 4
1731 CODE:
1732{
1733 struct transfer_args ta;
1734
1735 PUTBACK;
1736 switch (ix)
1737 {
1738 case 0:
1739 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1740 ta.next = 0;
1741 break;
1742
1743 case 1:
1744 if (items != 2)
1745 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1746
1747 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1748 break;
1749
1750 case 2:
1751 prepare_schedule (aTHX_ &ta);
1752 break;
1753
1754 case 3:
1755 prepare_cede (aTHX_ &ta);
1756 break;
1757
1758 case 4:
1759 if (!prepare_cede_notself (aTHX_ &ta))
1760 XSRETURN_EMPTY;
1761
1762 break;
1763 }
1764 SPAGAIN;
1765
1766 BARRIER;
1767 PUTBACK;
1768 TRANSFER (ta, 0);
1769 SPAGAIN; /* might be the sp of a different coroutine now */
1770 /* be extra careful not to ever do anything after TRANSFER */
1771}
1772 2911
1773bool 2912bool
1774_destroy (SV *coro_sv) 2913_destroy (SV *coro_sv)
1775 CODE: 2914 CODE:
1776 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2915 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1781_exit (int code) 2920_exit (int code)
1782 PROTOTYPE: $ 2921 PROTOTYPE: $
1783 CODE: 2922 CODE:
1784 _exit (code); 2923 _exit (code);
1785 2924
2925SV *
2926clone (Coro::State coro)
2927 CODE:
2928{
2929#if CORO_CLONE
2930 struct coro *ncoro = coro_clone (coro);
2931 MAGIC *mg;
2932 /* TODO: too much duplication */
2933 ncoro->hv = newHV ();
2934 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2935 mg->mg_flags |= MGf_DUP;
2936 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2937#else
2938 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2939#endif
2940}
2941 OUTPUT:
2942 RETVAL
2943
1786int 2944int
1787cctx_stacksize (int new_stacksize = 0) 2945cctx_stacksize (int new_stacksize = 0)
2946 PROTOTYPE: ;$
1788 CODE: 2947 CODE:
1789 RETVAL = coro_stacksize; 2948 RETVAL = cctx_stacksize;
1790 if (new_stacksize) 2949 if (new_stacksize)
2950 {
1791 coro_stacksize = new_stacksize; 2951 cctx_stacksize = new_stacksize;
2952 ++cctx_gen;
2953 }
1792 OUTPUT: 2954 OUTPUT:
1793 RETVAL 2955 RETVAL
1794 2956
1795int 2957int
2958cctx_max_idle (int max_idle = 0)
2959 PROTOTYPE: ;$
2960 CODE:
2961 RETVAL = cctx_max_idle;
2962 if (max_idle > 1)
2963 cctx_max_idle = max_idle;
2964 OUTPUT:
2965 RETVAL
2966
2967int
1796cctx_count () 2968cctx_count ()
2969 PROTOTYPE:
1797 CODE: 2970 CODE:
1798 RETVAL = cctx_count; 2971 RETVAL = cctx_count;
1799 OUTPUT: 2972 OUTPUT:
1800 RETVAL 2973 RETVAL
1801 2974
1802int 2975int
1803cctx_idle () 2976cctx_idle ()
2977 PROTOTYPE:
1804 CODE: 2978 CODE:
1805 RETVAL = cctx_idle; 2979 RETVAL = cctx_idle;
1806 OUTPUT: 2980 OUTPUT:
1807 RETVAL 2981 RETVAL
1808 2982
1809void 2983void
1810list () 2984list ()
2985 PROTOTYPE:
1811 PPCODE: 2986 PPCODE:
1812{ 2987{
1813 struct coro *coro; 2988 struct coro *coro;
1814 for (coro = coro_first; coro; coro = coro->next) 2989 for (coro = coro_first; coro; coro = coro->next)
1815 if (coro->hv) 2990 if (coro->hv)
… …
1874 RETVAL = boolSV (coro->flags & ix); 3049 RETVAL = boolSV (coro->flags & ix);
1875 OUTPUT: 3050 OUTPUT:
1876 RETVAL 3051 RETVAL
1877 3052
1878void 3053void
3054throw (Coro::State self, SV *throw = &PL_sv_undef)
3055 PROTOTYPE: $;$
3056 CODE:
3057{
3058 struct coro *current = SvSTATE_current;
3059 SV **throwp = self == current ? &CORO_THROW : &self->except;
3060 SvREFCNT_dec (*throwp);
3061 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3062}
3063
3064void
1879api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3065api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3066 PROTOTYPE: $;$
3067 C_ARGS: aTHX_ coro, flags
1880 3068
1881SV * 3069SV *
1882has_cctx (Coro::State coro) 3070has_cctx (Coro::State coro)
1883 PROTOTYPE: $ 3071 PROTOTYPE: $
1884 CODE: 3072 CODE:
1885 RETVAL = boolSV (!!coro->cctx); 3073 /* maybe manage the running flag differently */
3074 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1886 OUTPUT: 3075 OUTPUT:
1887 RETVAL 3076 RETVAL
1888 3077
1889int 3078int
1890is_traced (Coro::State coro) 3079is_traced (Coro::State coro)
… …
1892 CODE: 3081 CODE:
1893 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3082 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1894 OUTPUT: 3083 OUTPUT:
1895 RETVAL 3084 RETVAL
1896 3085
1897IV 3086UV
1898rss (Coro::State coro) 3087rss (Coro::State coro)
1899 PROTOTYPE: $ 3088 PROTOTYPE: $
1900 ALIAS: 3089 ALIAS:
1901 usecount = 1 3090 usecount = 1
1902 CODE: 3091 CODE:
… …
1908 OUTPUT: 3097 OUTPUT:
1909 RETVAL 3098 RETVAL
1910 3099
1911void 3100void
1912force_cctx () 3101force_cctx ()
3102 PROTOTYPE:
1913 CODE: 3103 CODE:
1914 struct coro *coro = SvSTATE (coro_current);
1915 coro->cctx->idle_sp = 0; 3104 cctx_current->idle_sp = 0;
1916
1917void
1918throw (Coro::State self, SV *throw = &PL_sv_undef)
1919 PROTOTYPE: $;$
1920 CODE:
1921 SvREFCNT_dec (self->throw);
1922 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1923 3105
1924void 3106void
1925swap_defsv (Coro::State self) 3107swap_defsv (Coro::State self)
1926 PROTOTYPE: $ 3108 PROTOTYPE: $
1927 ALIAS: 3109 ALIAS:
1928 swap_defav = 1 3110 swap_defav = 1
1929 CODE: 3111 CODE:
1930 if (!self->slot) 3112 if (!self->slot)
1931 croak ("cannot swap state with coroutine that has no saved state"); 3113 croak ("cannot swap state with coroutine that has no saved state,");
1932 else 3114 else
1933 { 3115 {
1934 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3116 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1935 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3117 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1936 3118
1937 SV *tmp = *src; *src = *dst; *dst = tmp; 3119 SV *tmp = *src; *src = *dst; *dst = tmp;
1938 } 3120 }
1939 3121
3122
1940MODULE = Coro::State PACKAGE = Coro 3123MODULE = Coro::State PACKAGE = Coro
1941 3124
1942BOOT: 3125BOOT:
1943{ 3126{
1944 int i; 3127 int i;
1945 3128
1946 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1947 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3129 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1948 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3130 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1949 3131 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3132 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
1950 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3133 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1951 SvREADONLY_on (coro_current); 3134 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3135 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3136 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3137 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3138
3139 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3140 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3141 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3142 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1952 3143
1953 coro_stash = gv_stashpv ("Coro", TRUE); 3144 coro_stash = gv_stashpv ("Coro", TRUE);
1954 3145
1955 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3146 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1956 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3147 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
1961 3152
1962 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3153 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1963 coro_ready[i] = newAV (); 3154 coro_ready[i] = newAV ();
1964 3155
1965 { 3156 {
1966 SV *sv = perl_get_sv ("Coro::API", TRUE); 3157 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1967 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1968 3158
1969 coroapi.schedule = api_schedule; 3159 coroapi.schedule = api_schedule;
3160 coroapi.schedule_to = api_schedule_to;
1970 coroapi.cede = api_cede; 3161 coroapi.cede = api_cede;
1971 coroapi.cede_notself = api_cede_notself; 3162 coroapi.cede_notself = api_cede_notself;
1972 coroapi.ready = api_ready; 3163 coroapi.ready = api_ready;
1973 coroapi.is_ready = api_is_ready; 3164 coroapi.is_ready = api_is_ready;
1974 coroapi.nready = &coro_nready; 3165 coroapi.nready = coro_nready;
1975 coroapi.current = coro_current; 3166 coroapi.current = coro_current;
1976 3167
1977 GCoroAPI = &coroapi; 3168 /*GCoroAPI = &coroapi;*/
1978 sv_setiv (sv, (IV)&coroapi); 3169 sv_setiv (sv, (IV)&coroapi);
1979 SvREADONLY_on (sv); 3170 SvREADONLY_on (sv);
1980 } 3171 }
1981} 3172}
3173
3174void
3175terminate (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3178
3179void
3180schedule (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3183
3184void
3185schedule_to (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3188
3189void
3190cede_to (...)
3191 CODE:
3192 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3193
3194void
3195cede (...)
3196 CODE:
3197 CORO_EXECUTE_SLF_XS (slf_init_cede);
3198
3199void
3200cede_notself (...)
3201 CODE:
3202 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3203
3204void
3205_cancel (Coro::State self)
3206 CODE:
3207 coro_state_destroy (aTHX_ self);
3208 coro_call_on_destroy (aTHX_ self);
1982 3209
1983void 3210void
1984_set_current (SV *current) 3211_set_current (SV *current)
1985 PROTOTYPE: $ 3212 PROTOTYPE: $
1986 CODE: 3213 CODE:
1987 SvREFCNT_dec (SvRV (coro_current)); 3214 SvREFCNT_dec (SvRV (coro_current));
1988 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3215 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1989 3216
1990void 3217void
1991_set_readyhook (SV *hook) 3218_set_readyhook (SV *hook)
1992 PROTOTYPE: $ 3219 PROTOTYPE: $
1993 CODE: 3220 CODE:
1994 LOCK;
1995 SvREFCNT_dec (coro_readyhook); 3221 SvREFCNT_dec (coro_readyhook);
1996 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3222 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1997 UNLOCK;
1998 3223
1999int 3224int
2000prio (Coro::State coro, int newprio = 0) 3225prio (Coro::State coro, int newprio = 0)
3226 PROTOTYPE: $;$
2001 ALIAS: 3227 ALIAS:
2002 nice = 1 3228 nice = 1
2003 CODE: 3229 CODE:
2004{ 3230{
2005 RETVAL = coro->prio; 3231 RETVAL = coro->prio;
… …
2020 3246
2021SV * 3247SV *
2022ready (SV *self) 3248ready (SV *self)
2023 PROTOTYPE: $ 3249 PROTOTYPE: $
2024 CODE: 3250 CODE:
2025 RETVAL = boolSV (api_ready (self)); 3251 RETVAL = boolSV (api_ready (aTHX_ self));
2026 OUTPUT: 3252 OUTPUT:
2027 RETVAL 3253 RETVAL
2028 3254
2029int 3255int
2030nready (...) 3256nready (...)
… …
2032 CODE: 3258 CODE:
2033 RETVAL = coro_nready; 3259 RETVAL = coro_nready;
2034 OUTPUT: 3260 OUTPUT:
2035 RETVAL 3261 RETVAL
2036 3262
2037# for async_pool speedup
2038void 3263void
2039_pool_1 (SV *cb) 3264_pool_handler (...)
2040 CODE: 3265 CODE:
2041{ 3266 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2042 struct coro *coro = SvSTATE (coro_current);
2043 HV *hv = (HV *)SvRV (coro_current);
2044 AV *defav = GvAV (PL_defgv);
2045 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2046 AV *invoke_av;
2047 int i, len;
2048 3267
2049 if (!invoke) 3268void
3269async_pool (SV *cv, ...)
3270 PROTOTYPE: &@
3271 PPCODE:
3272{
3273 HV *hv = (HV *)av_pop (av_async_pool);
3274 AV *av = newAV ();
3275 SV *cb = ST (0);
3276 int i;
3277
3278 av_extend (av, items - 2);
3279 for (i = 1; i < items; ++i)
3280 av_push (av, SvREFCNT_inc_NN (ST (i)));
3281
3282 if ((SV *)hv == &PL_sv_undef)
2050 { 3283 {
2051 SV *old = PL_diehook; 3284 PUSHMARK (SP);
2052 PL_diehook = 0; 3285 EXTEND (SP, 2);
2053 SvREFCNT_dec (old); 3286 PUSHs (sv_Coro);
2054 croak ("\3async_pool terminate\2\n"); 3287 PUSHs ((SV *)cv_pool_handler);
3288 PUTBACK;
3289 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3290 SPAGAIN;
3291
3292 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2055 } 3293 }
2056 3294
2057 SvREFCNT_dec (coro->saved_deffh);
2058 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2059
2060 hv_store (hv, "desc", sizeof ("desc") - 1,
2061 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2062
2063 invoke_av = (AV *)SvRV (invoke);
2064 len = av_len (invoke_av);
2065
2066 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2067
2068 if (len > 0)
2069 { 3295 {
2070 av_fill (defav, len - 1); 3296 struct coro *coro = SvSTATE_hv (hv);
2071 for (i = 0; i < len; ++i) 3297
2072 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3298 assert (!coro->invoke_cb);
3299 assert (!coro->invoke_av);
3300 coro->invoke_cb = SvREFCNT_inc (cb);
3301 coro->invoke_av = av;
2073 } 3302 }
2074 3303
3304 api_ready (aTHX_ (SV *)hv);
3305
3306 if (GIMME_V != G_VOID)
3307 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3308 else
2075 SvREFCNT_dec (invoke); 3309 SvREFCNT_dec (hv);
2076} 3310}
2077 3311
2078void 3312SV *
2079_pool_2 (SV *cb) 3313rouse_cb ()
3314 PROTOTYPE:
2080 CODE: 3315 CODE:
2081{ 3316 RETVAL = coro_new_rouse_cb (aTHX);
2082 struct coro *coro = SvSTATE (coro_current);
2083
2084 sv_setsv (cb, &PL_sv_undef);
2085
2086 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2087 coro->saved_deffh = 0;
2088
2089 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2090 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2091 {
2092 SV *old = PL_diehook;
2093 PL_diehook = 0;
2094 SvREFCNT_dec (old);
2095 croak ("\3async_pool terminate\2\n");
2096 }
2097
2098 av_clear (GvAV (PL_defgv));
2099 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2100 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2101
2102 coro->prio = 0;
2103
2104 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2105 api_trace (coro_current, 0);
2106
2107 av_push (av_async_pool, newSVsv (coro_current));
2108}
2109
2110#if 0
2111
2112void
2113_generator_call (...)
2114 PROTOTYPE: @
2115 PPCODE:
2116 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2117 xxxx
2118 abort ();
2119
2120SV *
2121gensub (SV *sub, ...)
2122 PROTOTYPE: &;@
2123 CODE:
2124{
2125 struct coro *coro;
2126 MAGIC *mg;
2127 CV *xcv;
2128 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2129 int i;
2130
2131 CvGV (ncv) = CvGV (cv);
2132 CvFILE (ncv) = CvFILE (cv);
2133
2134 Newz (0, coro, 1, struct coro);
2135 coro->args = newAV ();
2136 coro->flags = CF_NEW;
2137
2138 av_extend (coro->args, items - 1);
2139 for (i = 1; i < items; i++)
2140 av_push (coro->args, newSVsv (ST (i)));
2141
2142 CvISXSUB_on (ncv);
2143 CvXSUBANY (ncv).any_ptr = (void *)coro;
2144
2145 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2146
2147 CvXSUB (ncv) = CvXSUB (xcv);
2148 CvANON_on (ncv);
2149
2150 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2151 RETVAL = newRV_noinc ((SV *)ncv);
2152}
2153 OUTPUT: 3317 OUTPUT:
2154 RETVAL 3318 RETVAL
2155 3319
2156#endif 3320void
3321rouse_wait (...)
3322 PROTOTYPE: ;$
3323 PPCODE:
3324 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2157 3325
2158 3326
3327MODULE = Coro::State PACKAGE = PerlIO::cede
3328
3329BOOT:
3330 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3331
3332
2159MODULE = Coro::State PACKAGE = Coro::AIO 3333MODULE = Coro::State PACKAGE = Coro::Semaphore
2160 3334
2161SV * 3335SV *
2162_get_state () 3336new (SV *klass, SV *count = 0)
2163 CODE: 3337 CODE:
2164{ 3338 RETVAL = sv_bless (
2165 struct io_state *data; 3339 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2166 3340 GvSTASH (CvGV (cv))
2167 RETVAL = newSV (sizeof (struct io_state)); 3341 );
2168 data = (struct io_state *)SvPVX (RETVAL);
2169 SvCUR_set (RETVAL, sizeof (struct io_state));
2170 SvPOK_only (RETVAL);
2171
2172 data->errorno = errno;
2173 data->laststype = PL_laststype;
2174 data->laststatval = PL_laststatval;
2175 data->statcache = PL_statcache;
2176}
2177 OUTPUT: 3342 OUTPUT:
2178 RETVAL 3343 RETVAL
2179 3344
3345# helper for Coro::Channel
3346SV *
3347_alloc (int count)
3348 CODE:
3349 RETVAL = coro_waitarray_new (aTHX_ count);
3350 OUTPUT:
3351 RETVAL
3352
3353SV *
3354count (SV *self)
3355 CODE:
3356 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3357 OUTPUT:
3358 RETVAL
3359
2180void 3360void
2181_set_state (char *data_) 3361up (SV *self, int adjust = 1)
2182 PROTOTYPE: $ 3362 ALIAS:
3363 adjust = 1
3364 CODE:
3365 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3366
3367void
3368down (...)
3369 CODE:
3370 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3371
3372void
3373wait (...)
3374 CODE:
3375 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3376
3377void
3378try (SV *self)
3379 PPCODE:
3380{
3381 AV *av = (AV *)SvRV (self);
3382 SV *count_sv = AvARRAY (av)[0];
3383 IV count = SvIVX (count_sv);
3384
3385 if (count > 0)
3386 {
3387 --count;
3388 SvIVX (count_sv) = count;
3389 XSRETURN_YES;
3390 }
3391 else
3392 XSRETURN_NO;
3393}
3394
3395void
3396waiters (SV *self)
3397 PPCODE:
3398{
3399 AV *av = (AV *)SvRV (self);
3400 int wcount = AvFILLp (av) + 1 - 1;
3401
3402 if (GIMME_V == G_SCALAR)
3403 XPUSHs (sv_2mortal (newSViv (wcount)));
3404 else
3405 {
3406 int i;
3407 EXTEND (SP, wcount);
3408 for (i = 1; i <= wcount; ++i)
3409 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3410 }
3411}
3412
3413MODULE = Coro::State PACKAGE = Coro::Signal
3414
3415SV *
3416new (SV *klass)
2183 CODE: 3417 CODE:
2184{ 3418 RETVAL = sv_bless (
2185 struct io_state *data = (void *)data_; 3419 coro_waitarray_new (aTHX_ 0),
3420 GvSTASH (CvGV (cv))
3421 );
3422 OUTPUT:
3423 RETVAL
2186 3424
2187 errno = data->errorno; 3425void
2188 PL_laststype = data->laststype; 3426wait (...)
2189 PL_laststatval = data->laststatval; 3427 CODE:
2190 PL_statcache = data->statcache; 3428 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3429
3430void
3431broadcast (SV *self)
3432 CODE:
3433{
3434 AV *av = (AV *)SvRV (self);
3435 coro_signal_wake (aTHX_ av, AvFILLp (av));
2191} 3436}
3437
3438void
3439send (SV *self)
3440 CODE:
3441{
3442 AV *av = (AV *)SvRV (self);
3443
3444 if (AvFILLp (av))
3445 coro_signal_wake (aTHX_ av, 1);
3446 else
3447 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3448}
3449
3450IV
3451awaited (SV *self)
3452 CODE:
3453 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3454 OUTPUT:
3455 RETVAL
2192 3456
2193 3457
2194MODULE = Coro::State PACKAGE = Coro::AnyEvent 3458MODULE = Coro::State PACKAGE = Coro::AnyEvent
2195 3459
2196BOOT: 3460BOOT:
2197 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3461 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2198 3462
2199SV * 3463void
2200_schedule (...) 3464_schedule (...)
2201 PROTOTYPE: @
2202 CODE: 3465 CODE:
2203{ 3466{
2204 static int incede; 3467 static int incede;
2205 3468
2206 api_cede_notself (); 3469 api_cede_notself (aTHX);
2207 3470
2208 ++incede; 3471 ++incede;
2209 while (coro_nready >= incede && api_cede ()) 3472 while (coro_nready >= incede && api_cede (aTHX))
2210 ; 3473 ;
2211 3474
2212 sv_setsv (sv_activity, &PL_sv_undef); 3475 sv_setsv (sv_activity, &PL_sv_undef);
2213 if (coro_nready >= incede) 3476 if (coro_nready >= incede)
2214 { 3477 {
2215 PUSHMARK (SP); 3478 PUSHMARK (SP);
2216 PUTBACK; 3479 PUTBACK;
2217 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3480 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2218 SPAGAIN;
2219 } 3481 }
2220 3482
2221 --incede; 3483 --incede;
2222} 3484}
2223 3485
3486
3487MODULE = Coro::State PACKAGE = Coro::AIO
3488
3489void
3490_register (char *target, char *proto, SV *req)
3491 CODE:
3492{
3493 CV *req_cv = coro_sv_2cv (aTHX_ req);
3494 /* newXSproto doesn't return the CV on 5.8 */
3495 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3496 sv_setpv ((SV *)slf_cv, proto);
3497 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3498}
3499

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