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Comparing Coro/Coro/State.xs (file contents):
Revision 1.246 by root, Wed Sep 24 21:20:05 2008 UTC vs.
Revision 1.358 by root, Mon Jun 29 04:30:25 2009 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
64 61
65#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr 63# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
68# endif 65# endif
… …
81# ifndef IS_PADCONST 78# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
83# endif 80# endif
84#endif 81#endif
85 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
86/* 5.8.8 */ 93/* 5.8.8 */
87#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
89#endif 96#endif
90#ifndef newSV 97#ifndef newSV
91# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
92#endif 99#endif
93 100#ifndef CvISXSUB_on
94/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
95#ifndef CxHASARGS 102#endif
96# 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)
97#endif 108#endif
98 109
99/* 5.8.7 */ 110/* 5.8.7 */
100#ifndef SvRV_set 111#ifndef SvRV_set
101# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
… …
114# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
115#endif 126#endif
116 127
117/* 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
118 * 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
119#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
120#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
121 137
122#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
123 139
124#if __GNUC__ >= 3 140#if __GNUC__ >= 3
125# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
126# define BARRIER __asm__ __volatile__ ("" : : : "memory")
127# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr), (value))
143# define INLINE static inline
128#else 144#else
129# define attribute(x) 145# define attribute(x)
130# define BARRIER
131# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
132#endif 148#endif
133 149
134#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
135#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
136 152
137#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
138 154
139#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
140 157
141#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
142static perl_mutex coro_mutex; 159# if CORO_PTHREAD
143# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
144# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
145#else
146# define LOCK (void)0
147# define UNLOCK (void)0
148#endif 161# endif
162#endif
149 163
150/* helper storage struct for Coro::AIO */ 164#ifdef __linux
151struct io_state 165# include <time.h> /* for timespec */
152{ 166# include <syscall.h> /* for SYS_* */
153 int errorno; 167# ifdef SYS_clock_gettime
154 I32 laststype; 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
155 int laststatval; 169# define CORO_CLOCK_MONOTONIC 1
156 Stat_t statcache; 170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
157}; 171# endif
172#endif
158 173
159static double (*nvtime)(); /* so why doesn't it take void? */ 174static double (*nvtime)(); /* so why doesn't it take void? */
160 175
176/* we hijack an hopefully unused CV flag for our purposes */
177#define CVf_SLF 0x4000
178static OP *pp_slf (pTHX);
179
180static U32 cctx_gen;
161static size_t coro_stacksize = CORO_STACKSIZE; 181static size_t cctx_stacksize = CORO_STACKSIZE;
162static struct CoroAPI coroapi; 182static struct CoroAPI coroapi;
163static AV *main_mainstack; /* used to differentiate between $main and others */ 183static AV *main_mainstack; /* used to differentiate between $main and others */
164static JMPENV *main_top_env; 184static JMPENV *main_top_env;
165static HV *coro_state_stash, *coro_stash; 185static HV *coro_state_stash, *coro_stash;
166static volatile SV *coro_mortal; /* will be freed after next transfer */ 186static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
187
188static AV *av_destroy; /* destruction queue */
189static SV *sv_manager; /* the manager coro */
190static SV *sv_idle; /* $Coro::idle */
167 191
168static GV *irsgv; /* $/ */ 192static GV *irsgv; /* $/ */
169static GV *stdoutgv; /* *STDOUT */ 193static GV *stdoutgv; /* *STDOUT */
170static SV *rv_diehook; 194static SV *rv_diehook;
171static SV *rv_warnhook; 195static SV *rv_warnhook;
172static HV *hv_sig; /* %SIG */ 196static HV *hv_sig; /* %SIG */
173 197
174/* async_pool helper stuff */ 198/* async_pool helper stuff */
175static SV *sv_pool_rss; 199static SV *sv_pool_rss;
176static SV *sv_pool_size; 200static SV *sv_pool_size;
201static SV *sv_async_pool_idle; /* description string */
177static AV *av_async_pool; 202static AV *av_async_pool; /* idle pool */
203static SV *sv_Coro; /* class string */
204static CV *cv_pool_handler;
205static CV *cv_coro_state_new;
178 206
179/* Coro::AnyEvent */ 207/* Coro::AnyEvent */
180static SV *sv_activity; 208static SV *sv_activity;
181 209
182static struct coro_cctx *cctx_first; 210static struct coro_cctx *cctx_first;
… …
190 CC_TRACE_LINE = 0x10, /* trace each statement */ 218 CC_TRACE_LINE = 0x10, /* trace each statement */
191 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 219 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
192}; 220};
193 221
194/* this is a structure representing a c-level coroutine */ 222/* this is a structure representing a c-level coroutine */
195typedef struct coro_cctx { 223typedef struct coro_cctx
224{
196 struct coro_cctx *next; 225 struct coro_cctx *next;
197 226
198 /* the stack */ 227 /* the stack */
199 void *sptr; 228 void *sptr;
200 size_t ssize; 229 size_t ssize;
… …
203 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 232 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
204 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 233 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
205 JMPENV *top_env; 234 JMPENV *top_env;
206 coro_context cctx; 235 coro_context cctx;
207 236
237 U32 gen;
208#if CORO_USE_VALGRIND 238#if CORO_USE_VALGRIND
209 int valgrind_id; 239 int valgrind_id;
210#endif 240#endif
211 unsigned char flags; 241 unsigned char flags;
212} coro_cctx; 242} coro_cctx;
243
244coro_cctx *cctx_current; /* the currently running cctx */
245
246/*****************************************************************************/
213 247
214enum { 248enum {
215 CF_RUNNING = 0x0001, /* coroutine is running */ 249 CF_RUNNING = 0x0001, /* coroutine is running */
216 CF_READY = 0x0002, /* coroutine is ready */ 250 CF_READY = 0x0002, /* coroutine is ready */
217 CF_NEW = 0x0004, /* has never been switched to */ 251 CF_NEW = 0x0004, /* has never been switched to */
218 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 252 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
253 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
219}; 254};
220 255
221/* the structure where most of the perl state is stored, overlaid on the cxstack */ 256/* the structure where most of the perl state is stored, overlaid on the cxstack */
222typedef struct { 257typedef struct
258{
223 SV *defsv; 259 SV *defsv;
224 AV *defav; 260 AV *defav;
225 SV *errsv; 261 SV *errsv;
226 SV *irsgv; 262 SV *irsgv;
263 HV *hinthv;
227#define VAR(name,type) type name; 264#define VAR(name,type) type name;
228# include "state.h" 265# include "state.h"
229#undef VAR 266#undef VAR
230} perl_slots; 267} perl_slots;
231 268
232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 269#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
233 270
234/* this is a structure representing a perl-level coroutine */ 271/* this is a structure representing a perl-level coroutine */
235struct coro { 272struct coro {
236 /* the c coroutine allocated to this perl coroutine, if any */ 273 /* the C coroutine allocated to this perl coroutine, if any */
237 coro_cctx *cctx; 274 coro_cctx *cctx;
238 275
239 /* process data */ 276 /* ready queue */
277 struct coro *next_ready;
278
279 /* state data */
280 struct CoroSLF slf_frame; /* saved slf frame */
240 AV *mainstack; 281 AV *mainstack;
241 perl_slots *slot; /* basically the saved sp */ 282 perl_slots *slot; /* basically the saved sp */
242 283
284 CV *startcv; /* the CV to execute */
243 AV *args; /* data associated with this coroutine (initial args) */ 285 AV *args; /* data associated with this coroutine (initial args) */
244 int refcnt; /* coroutines are refcounted, yes */ 286 int refcnt; /* coroutines are refcounted, yes */
245 int flags; /* CF_ flags */ 287 int flags; /* CF_ flags */
246 HV *hv; /* the perl hash associated with this coro, if any */ 288 HV *hv; /* the perl hash associated with this coro, if any */
289 void (*on_destroy)(pTHX_ struct coro *coro);
247 290
248 /* statistics */ 291 /* statistics */
249 int usecount; /* number of transfers to this coro */ 292 int usecount; /* number of transfers to this coro */
250 293
251 /* coro process data */ 294 /* coro process data */
252 int prio; 295 int prio;
253 SV *throw; /* exception to be thrown */ 296 SV *except; /* exception to be thrown */
297 SV *rouse_cb;
254 298
255 /* async_pool */ 299 /* async_pool */
256 SV *saved_deffh; 300 SV *saved_deffh;
301 SV *invoke_cb;
302 AV *invoke_av;
303
304 /* on_enter/on_leave */
305 AV *on_enter;
306 AV *on_leave;
257 307
258 /* linked list */ 308 /* linked list */
259 struct coro *next, *prev; 309 struct coro *next, *prev;
260}; 310};
261 311
262typedef struct coro *Coro__State; 312typedef struct coro *Coro__State;
263typedef struct coro *Coro__State_or_hashref; 313typedef struct coro *Coro__State_or_hashref;
264 314
315/* the following variables are effectively part of the perl context */
316/* and get copied between struct coro and these variables */
317/* the mainr easonw e don't support windows process emulation */
318static struct CoroSLF slf_frame; /* the current slf frame */
319
265/** Coro ********************************************************************/ 320/** Coro ********************************************************************/
266 321
267#define PRIO_MAX 3 322#define CORO_PRIO_MAX 3
268#define PRIO_HIGH 1 323#define CORO_PRIO_HIGH 1
269#define PRIO_NORMAL 0 324#define CORO_PRIO_NORMAL 0
270#define PRIO_LOW -1 325#define CORO_PRIO_LOW -1
271#define PRIO_IDLE -3 326#define CORO_PRIO_IDLE -3
272#define PRIO_MIN -4 327#define CORO_PRIO_MIN -4
273 328
274/* for Coro.pm */ 329/* for Coro.pm */
275static SV *coro_current; 330static SV *coro_current;
276static SV *coro_readyhook; 331static SV *coro_readyhook;
277static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 332static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
278static int coro_nready; 333static CV *cv_coro_run, *cv_coro_terminate;
279static struct coro *coro_first; 334static struct coro *coro_first;
335#define coro_nready coroapi.nready
280 336
281/** lowlevel stuff **********************************************************/ 337/** lowlevel stuff **********************************************************/
282 338
283static SV * 339static SV *
284coro_get_sv (pTHX_ const char *name, int create) 340coro_get_sv (pTHX_ const char *name, int create)
… …
308 get_hv (name, create); 364 get_hv (name, create);
309#endif 365#endif
310 return get_hv (name, create); 366 return get_hv (name, create);
311} 367}
312 368
369/* may croak */
370INLINE CV *
371coro_sv_2cv (pTHX_ SV *sv)
372{
373 HV *st;
374 GV *gvp;
375 CV *cv = sv_2cv (sv, &st, &gvp, 0);
376
377 if (!cv)
378 croak ("code reference expected");
379
380 return cv;
381}
382
383/*****************************************************************************/
384/* magic glue */
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388
389#define CORO_MAGIC_NN(sv, type) \
390 (expect_true (SvMAGIC (sv)->mg_type == type) \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type))
393
394#define CORO_MAGIC(sv, type) \
395 (expect_true (SvMAGIC (sv)) \
396 ? CORO_MAGIC_NN (sv, type) \
397 : 0)
398
399#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
400#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
401
402INLINE struct coro *
403SvSTATE_ (pTHX_ SV *coro)
404{
405 HV *stash;
406 MAGIC *mg;
407
408 if (SvROK (coro))
409 coro = SvRV (coro);
410
411 if (expect_false (SvTYPE (coro) != SVt_PVHV))
412 croak ("Coro::State object required");
413
414 stash = SvSTASH (coro);
415 if (expect_false (stash != coro_stash && stash != coro_state_stash))
416 {
417 /* very slow, but rare, check */
418 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
419 croak ("Coro::State object required");
420 }
421
422 mg = CORO_MAGIC_state (coro);
423 return (struct coro *)mg->mg_ptr;
424}
425
426#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
427
428/* faster than SvSTATE, but expects a coroutine hv */
429#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
430#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
431
432/*****************************************************************************/
433/* padlist management and caching */
434
313static AV * 435static AV *
314coro_clone_padlist (pTHX_ CV *cv) 436coro_derive_padlist (pTHX_ CV *cv)
315{ 437{
316 AV *padlist = CvPADLIST (cv); 438 AV *padlist = CvPADLIST (cv);
317 AV *newpadlist, *newpad; 439 AV *newpadlist, *newpad;
318 440
319 newpadlist = newAV (); 441 newpadlist = newAV ();
… …
324 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 446 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
325#endif 447#endif
326 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 448 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
327 --AvFILLp (padlist); 449 --AvFILLp (padlist);
328 450
329 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 451 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
330 av_store (newpadlist, 1, (SV *)newpad); 452 av_store (newpadlist, 1, (SV *)newpad);
331 453
332 return newpadlist; 454 return newpadlist;
333} 455}
334 456
335static void 457static void
336free_padlist (pTHX_ AV *padlist) 458free_padlist (pTHX_ AV *padlist)
337{ 459{
338 /* may be during global destruction */ 460 /* may be during global destruction */
339 if (SvREFCNT (padlist)) 461 if (!IN_DESTRUCT)
340 { 462 {
341 I32 i = AvFILLp (padlist); 463 I32 i = AvFILLp (padlist);
342 while (i >= 0) 464
465 while (i > 0) /* special-case index 0 */
343 { 466 {
344 SV **svp = av_fetch (padlist, i--, FALSE); 467 /* we try to be extra-careful here */
345 if (svp) 468 AV *av = (AV *)AvARRAY (padlist)[i--];
346 { 469 I32 j = AvFILLp (av);
347 SV *sv; 470
348 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 471 while (j >= 0)
472 SvREFCNT_dec (AvARRAY (av)[j--]);
473
474 AvFILLp (av) = -1;
349 SvREFCNT_dec (sv); 475 SvREFCNT_dec (av);
350
351 SvREFCNT_dec (*svp);
352 }
353 } 476 }
354 477
478 SvREFCNT_dec (AvARRAY (padlist)[0]);
479
480 AvFILLp (padlist) = -1;
355 SvREFCNT_dec ((SV*)padlist); 481 SvREFCNT_dec ((SV*)padlist);
356 } 482 }
357} 483}
358 484
359static int 485static int
360coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 486coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
361{ 487{
362 AV *padlist; 488 AV *padlist;
363 AV *av = (AV *)mg->mg_obj; 489 AV *av = (AV *)mg->mg_obj;
490
491 /* perl manages to free our internal AV and _then_ call us */
492 if (IN_DESTRUCT)
493 return;
364 494
365 /* casting is fun. */ 495 /* casting is fun. */
366 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 496 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
367 free_padlist (aTHX_ padlist); 497 free_padlist (aTHX_ padlist);
368 498
369 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 499 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
370 500
371 return 0; 501 return 0;
372} 502}
373
374#define CORO_MAGIC_type_cv PERL_MAGIC_ext
375#define CORO_MAGIC_type_state PERL_MAGIC_ext
376 503
377static MGVTBL coro_cv_vtbl = { 504static MGVTBL coro_cv_vtbl = {
378 0, 0, 0, 0, 505 0, 0, 0, 0,
379 coro_cv_free 506 coro_cv_free
380}; 507};
381
382#define CORO_MAGIC(sv,type) \
383 SvMAGIC (sv) \
384 ? SvMAGIC (sv)->mg_type == type \
385 ? SvMAGIC (sv) \
386 : mg_find (sv, type) \
387 : 0
388
389#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
390#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
391
392static struct coro *
393SvSTATE_ (pTHX_ SV *coro)
394{
395 HV *stash;
396 MAGIC *mg;
397
398 if (SvROK (coro))
399 coro = SvRV (coro);
400
401 if (expect_false (SvTYPE (coro) != SVt_PVHV))
402 croak ("Coro::State object required");
403
404 stash = SvSTASH (coro);
405 if (expect_false (stash != coro_stash && stash != coro_state_stash))
406 {
407 /* very slow, but rare, check */
408 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
409 croak ("Coro::State object required");
410 }
411
412 mg = CORO_MAGIC_state (coro);
413 return (struct coro *)mg->mg_ptr;
414}
415
416#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
417 508
418/* the next two functions merely cache the padlists */ 509/* the next two functions merely cache the padlists */
419static void 510static void
420get_padlist (pTHX_ CV *cv) 511get_padlist (pTHX_ CV *cv)
421{ 512{
… …
427 else 518 else
428 { 519 {
429#if CORO_PREFER_PERL_FUNCTIONS 520#if CORO_PREFER_PERL_FUNCTIONS
430 /* this is probably cleaner? but also slower! */ 521 /* this is probably cleaner? but also slower! */
431 /* in practise, it seems to be less stable */ 522 /* in practise, it seems to be less stable */
432 CV *cp = Perl_cv_clone (cv); 523 CV *cp = Perl_cv_clone (aTHX_ cv);
433 CvPADLIST (cv) = CvPADLIST (cp); 524 CvPADLIST (cv) = CvPADLIST (cp);
434 CvPADLIST (cp) = 0; 525 CvPADLIST (cp) = 0;
435 SvREFCNT_dec (cp); 526 SvREFCNT_dec (cp);
436#else 527#else
437 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 528 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
438#endif 529#endif
439 } 530 }
440} 531}
441 532
442static void 533static void
… …
449 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 540 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
450 541
451 av = (AV *)mg->mg_obj; 542 av = (AV *)mg->mg_obj;
452 543
453 if (expect_false (AvFILLp (av) >= AvMAX (av))) 544 if (expect_false (AvFILLp (av) >= AvMAX (av)))
454 av_extend (av, AvMAX (av) + 1); 545 av_extend (av, AvFILLp (av) + 1);
455 546
456 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 547 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
457} 548}
458 549
459/** load & save, init *******************************************************/ 550/** load & save, init *******************************************************/
551
552static void
553on_enterleave_call (pTHX_ SV *cb);
460 554
461static void 555static void
462load_perl (pTHX_ Coro__State c) 556load_perl (pTHX_ Coro__State c)
463{ 557{
464 perl_slots *slot = c->slot; 558 perl_slots *slot = c->slot;
465 c->slot = 0; 559 c->slot = 0;
466 560
467 PL_mainstack = c->mainstack; 561 PL_mainstack = c->mainstack;
468 562
469 GvSV (PL_defgv) = slot->defsv; 563 GvSV (PL_defgv) = slot->defsv;
470 GvAV (PL_defgv) = slot->defav; 564 GvAV (PL_defgv) = slot->defav;
471 GvSV (PL_errgv) = slot->errsv; 565 GvSV (PL_errgv) = slot->errsv;
472 GvSV (irsgv) = slot->irsgv; 566 GvSV (irsgv) = slot->irsgv;
567 GvHV (PL_hintgv) = slot->hinthv;
473 568
474 #define VAR(name,type) PL_ ## name = slot->name; 569 #define VAR(name,type) PL_ ## name = slot->name;
475 # include "state.h" 570 # include "state.h"
476 #undef VAR 571 #undef VAR
477 572
… …
488 CvPADLIST (cv) = (AV *)POPs; 583 CvPADLIST (cv) = (AV *)POPs;
489 } 584 }
490 585
491 PUTBACK; 586 PUTBACK;
492 } 587 }
588
589 slf_frame = c->slf_frame;
590 CORO_THROW = c->except;
591
592 if (expect_false (c->on_enter))
593 {
594 int i;
595
596 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
597 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
598 }
493} 599}
494 600
495static void 601static void
496save_perl (pTHX_ Coro__State c) 602save_perl (pTHX_ Coro__State c)
497{ 603{
604 if (expect_false (c->on_leave))
605 {
606 int i;
607
608 for (i = AvFILLp (c->on_leave); i >= 0; --i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
610 }
611
612 c->except = CORO_THROW;
613 c->slf_frame = slf_frame;
614
498 { 615 {
499 dSP; 616 dSP;
500 I32 cxix = cxstack_ix; 617 I32 cxix = cxstack_ix;
501 PERL_CONTEXT *ccstk = cxstack; 618 PERL_CONTEXT *ccstk = cxstack;
502 PERL_SI *top_si = PL_curstackinfo; 619 PERL_SI *top_si = PL_curstackinfo;
… …
512 { 629 {
513 while (expect_true (cxix >= 0)) 630 while (expect_true (cxix >= 0))
514 { 631 {
515 PERL_CONTEXT *cx = &ccstk[cxix--]; 632 PERL_CONTEXT *cx = &ccstk[cxix--];
516 633
517 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 634 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
518 { 635 {
519 CV *cv = cx->blk_sub.cv; 636 CV *cv = cx->blk_sub.cv;
520 637
521 if (expect_true (CvDEPTH (cv))) 638 if (expect_true (CvDEPTH (cv)))
522 { 639 {
… …
557 c->mainstack = PL_mainstack; 674 c->mainstack = PL_mainstack;
558 675
559 { 676 {
560 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 677 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
561 678
562 slot->defav = GvAV (PL_defgv); 679 slot->defav = GvAV (PL_defgv);
563 slot->defsv = DEFSV; 680 slot->defsv = DEFSV;
564 slot->errsv = ERRSV; 681 slot->errsv = ERRSV;
565 slot->irsgv = GvSV (irsgv); 682 slot->irsgv = GvSV (irsgv);
683 slot->hinthv = GvHV (PL_hintgv);
566 684
567 #define VAR(name,type) slot->name = PL_ ## name; 685 #define VAR(name,type) slot->name = PL_ ## name;
568 # include "state.h" 686 # include "state.h"
569 #undef VAR 687 #undef VAR
570 } 688 }
571} 689}
572 690
573/* 691/*
574 * allocate various perl stacks. This is an exact copy 692 * allocate various perl stacks. This is almost an exact copy
575 * of perl.c:init_stacks, except that it uses less memory 693 * of perl.c:init_stacks, except that it uses less memory
576 * on the (sometimes correct) assumption that coroutines do 694 * on the (sometimes correct) assumption that coroutines do
577 * not usually need a lot of stackspace. 695 * not usually need a lot of stackspace.
578 */ 696 */
579#if CORO_PREFER_PERL_FUNCTIONS 697#if CORO_PREFER_PERL_FUNCTIONS
580# define coro_init_stacks init_stacks 698# define coro_init_stacks(thx) init_stacks ()
581#else 699#else
582static void 700static void
583coro_init_stacks (pTHX) 701coro_init_stacks (pTHX)
584{ 702{
585 PL_curstackinfo = new_stackinfo(32, 8); 703 PL_curstackinfo = new_stackinfo(32, 8);
… …
622 740
623/* 741/*
624 * destroy the stacks, the callchain etc... 742 * destroy the stacks, the callchain etc...
625 */ 743 */
626static void 744static void
627coro_destroy_stacks (pTHX) 745coro_destruct_stacks (pTHX)
628{ 746{
629 while (PL_curstackinfo->si_next) 747 while (PL_curstackinfo->si_next)
630 PL_curstackinfo = PL_curstackinfo->si_next; 748 PL_curstackinfo = PL_curstackinfo->si_next;
631 749
632 while (PL_curstackinfo) 750 while (PL_curstackinfo)
… …
648#if !PERL_VERSION_ATLEAST (5,10,0) 766#if !PERL_VERSION_ATLEAST (5,10,0)
649 Safefree (PL_retstack); 767 Safefree (PL_retstack);
650#endif 768#endif
651} 769}
652 770
771#define CORO_RSS \
772 rss += sizeof (SYM (curstackinfo)); \
773 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
774 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
775 rss += SYM (tmps_max) * sizeof (SV *); \
776 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
777 rss += SYM (scopestack_max) * sizeof (I32); \
778 rss += SYM (savestack_max) * sizeof (ANY);
779
653static size_t 780static size_t
654coro_rss (pTHX_ struct coro *coro) 781coro_rss (pTHX_ struct coro *coro)
655{ 782{
656 size_t rss = sizeof (*coro); 783 size_t rss = sizeof (*coro);
657 784
658 if (coro->mainstack) 785 if (coro->mainstack)
659 { 786 {
660 perl_slots tmp_slot;
661 perl_slots *slot;
662
663 if (coro->flags & CF_RUNNING) 787 if (coro->flags & CF_RUNNING)
664 { 788 {
665 slot = &tmp_slot; 789 #define SYM(sym) PL_ ## sym
666 790 CORO_RSS;
667 #define VAR(name,type) slot->name = PL_ ## name;
668 # include "state.h"
669 #undef VAR 791 #undef SYM
670 } 792 }
671 else 793 else
672 slot = coro->slot;
673
674 if (slot)
675 { 794 {
676 rss += sizeof (slot->curstackinfo); 795 #define SYM(sym) coro->slot->sym
677 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 796 CORO_RSS;
678 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 797 #undef SYM
679 rss += slot->tmps_max * sizeof (SV *);
680 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
681 rss += slot->scopestack_max * sizeof (I32);
682 rss += slot->savestack_max * sizeof (ANY);
683
684#if !PERL_VERSION_ATLEAST (5,10,0)
685 rss += slot->retstack_max * sizeof (OP *);
686#endif
687 } 798 }
688 } 799 }
689 800
690 return rss; 801 return rss;
691} 802}
… …
704#endif 815#endif
705 816
706/* 817/*
707 * This overrides the default magic get method of %SIG elements. 818 * This overrides the default magic get method of %SIG elements.
708 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 819 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
709 * and instead of tryign to save and restore the hash elements, we just provide 820 * and instead of trying to save and restore the hash elements, we just provide
710 * readback here. 821 * readback here.
711 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
712 * not expecting this to actually change the hook. This is a potential problem
713 * when a schedule happens then, but we ignore this.
714 */ 822 */
715static int 823static int
716coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 824coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
717{ 825{
718 const char *s = MgPV_nolen_const (mg); 826 const char *s = MgPV_nolen_const (mg);
… …
771 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 879 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
772 880
773 if (svp) 881 if (svp)
774 { 882 {
775 SV *old = *svp; 883 SV *old = *svp;
776 *svp = newSVsv (sv); 884 *svp = SvOK (sv) ? newSVsv (sv) : 0;
777 SvREFCNT_dec (old); 885 SvREFCNT_dec (old);
778 return 0; 886 return 0;
779 } 887 }
780 } 888 }
781 889
782 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 890 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
783} 891}
784 892
785static void 893static void
894prepare_nop (pTHX_ struct coro_transfer_args *ta)
895{
896 /* kind of mega-hacky, but works */
897 ta->next = ta->prev = (struct coro *)ta;
898}
899
900static int
901slf_check_nop (pTHX_ struct CoroSLF *frame)
902{
903 return 0;
904}
905
906static int
907slf_check_repeat (pTHX_ struct CoroSLF *frame)
908{
909 return 1;
910}
911
912static UNOP coro_setup_op;
913
914static void NOINLINE /* noinline to keep it out of the transfer fast path */
786coro_setup (pTHX_ struct coro *coro) 915coro_setup (pTHX_ struct coro *coro)
787{ 916{
788 /* 917 /*
789 * emulate part of the perl startup here. 918 * emulate part of the perl startup here.
790 */ 919 */
… …
792 921
793 PL_runops = RUNOPS_DEFAULT; 922 PL_runops = RUNOPS_DEFAULT;
794 PL_curcop = &PL_compiling; 923 PL_curcop = &PL_compiling;
795 PL_in_eval = EVAL_NULL; 924 PL_in_eval = EVAL_NULL;
796 PL_comppad = 0; 925 PL_comppad = 0;
926 PL_comppad_name = 0;
927 PL_comppad_name_fill = 0;
928 PL_comppad_name_floor = 0;
797 PL_curpm = 0; 929 PL_curpm = 0;
798 PL_curpad = 0; 930 PL_curpad = 0;
799 PL_localizing = 0; 931 PL_localizing = 0;
800 PL_dirty = 0; 932 PL_dirty = 0;
801 PL_restartop = 0; 933 PL_restartop = 0;
802#if PERL_VERSION_ATLEAST (5,10,0) 934#if PERL_VERSION_ATLEAST (5,10,0)
803 PL_parser = 0; 935 PL_parser = 0;
804#endif 936#endif
937 PL_hints = 0;
805 938
806 /* recreate the die/warn hooks */ 939 /* recreate the die/warn hooks */
807 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 940 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
808 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 941 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
809 942
810 GvSV (PL_defgv) = newSV (0); 943 GvSV (PL_defgv) = newSV (0);
811 GvAV (PL_defgv) = coro->args; coro->args = 0; 944 GvAV (PL_defgv) = coro->args; coro->args = 0;
812 GvSV (PL_errgv) = newSV (0); 945 GvSV (PL_errgv) = newSV (0);
813 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 946 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
947 GvHV (PL_hintgv) = 0;
814 PL_rs = newSVsv (GvSV (irsgv)); 948 PL_rs = newSVsv (GvSV (irsgv));
815 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 949 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
816 950
817 { 951 {
818 dSP; 952 dSP;
819 LOGOP myop; 953 UNOP myop;
820 954
821 Zero (&myop, 1, LOGOP); 955 Zero (&myop, 1, UNOP);
822 myop.op_next = Nullop; 956 myop.op_next = Nullop;
957 myop.op_type = OP_ENTERSUB;
823 myop.op_flags = OPf_WANT_VOID; 958 myop.op_flags = OPf_WANT_VOID;
824 959
825 PUSHMARK (SP); 960 PUSHMARK (SP);
826 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 961 PUSHs ((SV *)coro->startcv);
827 PUTBACK; 962 PUTBACK;
828 PL_op = (OP *)&myop; 963 PL_op = (OP *)&myop;
829 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 964 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
830 SPAGAIN;
831 } 965 }
832 966
833 /* this newly created coroutine might be run on an existing cctx which most 967 /* this newly created coroutine might be run on an existing cctx which most
834 * likely was suspended in set_stacklevel, called from entersub. 968 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
835 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
836 * so we ENTER here for symmetry
837 */ 969 */
838 ENTER; 970 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
839} 971 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
840 972
973 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
974 coro_setup_op.op_next = PL_op;
975 coro_setup_op.op_type = OP_ENTERSUB;
976 coro_setup_op.op_ppaddr = pp_slf;
977 /* no flags etc. required, as an init function won't be called */
978
979 PL_op = (OP *)&coro_setup_op;
980
981 /* copy throw, in case it was set before coro_setup */
982 CORO_THROW = coro->except;
983}
984
841static void 985static void
842coro_destroy (pTHX_ struct coro *coro) 986coro_unwind_stacks (pTHX)
843{ 987{
844 if (!IN_DESTRUCT) 988 if (!IN_DESTRUCT)
845 { 989 {
846 /* restore all saved variables and stuff */ 990 /* restore all saved variables and stuff */
847 LEAVE_SCOPE (0); 991 LEAVE_SCOPE (0);
… …
855 POPSTACK_TO (PL_mainstack); 999 POPSTACK_TO (PL_mainstack);
856 1000
857 /* unwind main stack */ 1001 /* unwind main stack */
858 dounwind (-1); 1002 dounwind (-1);
859 } 1003 }
1004}
860 1005
861 SvREFCNT_dec (GvSV (PL_defgv)); 1006static void
862 SvREFCNT_dec (GvAV (PL_defgv)); 1007coro_destruct_perl (pTHX_ struct coro *coro)
863 SvREFCNT_dec (GvSV (PL_errgv)); 1008{
864 SvREFCNT_dec (PL_defoutgv); 1009 SV *svf [9];
865 SvREFCNT_dec (PL_rs);
866 SvREFCNT_dec (GvSV (irsgv));
867 1010
868 SvREFCNT_dec (PL_diehook);
869 SvREFCNT_dec (PL_warnhook);
870 1011 {
1012 struct coro *current = SvSTATE_current;
1013
1014 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1015
1016 save_perl (aTHX_ current);
1017 load_perl (aTHX_ coro);
1018
1019 coro_unwind_stacks (aTHX);
1020 coro_destruct_stacks (aTHX);
1021
1022 // now save some sv's to be free'd later
1023 svf [0] = GvSV (PL_defgv);
1024 svf [1] = (SV *)GvAV (PL_defgv);
1025 svf [2] = GvSV (PL_errgv);
1026 svf [3] = (SV *)PL_defoutgv;
1027 svf [4] = PL_rs;
1028 svf [5] = GvSV (irsgv);
1029 svf [6] = (SV *)GvHV (PL_hintgv);
1030 svf [7] = PL_diehook;
1031 svf [8] = PL_warnhook;
1032 assert (9 == sizeof (svf) / sizeof (*svf));
1033
1034 load_perl (aTHX_ current);
1035 }
1036
1037 {
1038 int i;
1039
1040 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1041 SvREFCNT_dec (svf [i]);
1042
871 SvREFCNT_dec (coro->saved_deffh); 1043 SvREFCNT_dec (coro->saved_deffh);
872 SvREFCNT_dec (coro->throw); 1044 SvREFCNT_dec (coro->rouse_cb);
873 1045 SvREFCNT_dec (coro->invoke_cb);
874 coro_destroy_stacks (aTHX); 1046 SvREFCNT_dec (coro->invoke_av);
1047 }
875} 1048}
876 1049
877static void 1050INLINE void
878free_coro_mortal (pTHX) 1051free_coro_mortal (pTHX)
879{ 1052{
880 if (expect_true (coro_mortal)) 1053 if (expect_true (coro_mortal))
881 { 1054 {
882 SvREFCNT_dec (coro_mortal); 1055 SvREFCNT_dec (coro_mortal);
… …
887static int 1060static int
888runops_trace (pTHX) 1061runops_trace (pTHX)
889{ 1062{
890 COP *oldcop = 0; 1063 COP *oldcop = 0;
891 int oldcxix = -2; 1064 int oldcxix = -2;
892 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
893 coro_cctx *cctx = coro->cctx;
894 1065
895 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1066 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
896 { 1067 {
897 PERL_ASYNC_CHECK (); 1068 PERL_ASYNC_CHECK ();
898 1069
899 if (cctx->flags & CC_TRACE_ALL) 1070 if (cctx_current->flags & CC_TRACE_ALL)
900 { 1071 {
901 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1072 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
902 { 1073 {
903 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1074 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
904 SV **bot, **top; 1075 SV **bot, **top;
905 AV *av = newAV (); /* return values */ 1076 AV *av = newAV (); /* return values */
906 SV **cb; 1077 SV **cb;
… …
916 : cx->blk_gimme == G_SCALAR ? bot + 1 1087 : cx->blk_gimme == G_SCALAR ? bot + 1
917 : bot; 1088 : bot;
918 1089
919 av_extend (av, top - bot); 1090 av_extend (av, top - bot);
920 while (bot < top) 1091 while (bot < top)
921 av_push (av, SvREFCNT_inc (*bot++)); 1092 av_push (av, SvREFCNT_inc_NN (*bot++));
922 1093
923 PL_runops = RUNOPS_DEFAULT; 1094 PL_runops = RUNOPS_DEFAULT;
924 ENTER; 1095 ENTER;
925 SAVETMPS; 1096 SAVETMPS;
926 EXTEND (SP, 3); 1097 EXTEND (SP, 3);
… …
943 1114
944 if (PL_curcop != &PL_compiling) 1115 if (PL_curcop != &PL_compiling)
945 { 1116 {
946 SV **cb; 1117 SV **cb;
947 1118
948 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1119 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
949 { 1120 {
950 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1121 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
951 1122
952 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1123 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
953 { 1124 {
954 runops_proc_t old_runops = PL_runops;
955 dSP; 1125 dSP;
956 GV *gv = CvGV (cx->blk_sub.cv); 1126 GV *gv = CvGV (cx->blk_sub.cv);
957 SV *fullname = sv_2mortal (newSV (0)); 1127 SV *fullname = sv_2mortal (newSV (0));
958 1128
959 if (isGV (gv)) 1129 if (isGV (gv))
… …
964 SAVETMPS; 1134 SAVETMPS;
965 EXTEND (SP, 3); 1135 EXTEND (SP, 3);
966 PUSHMARK (SP); 1136 PUSHMARK (SP);
967 PUSHs (&PL_sv_yes); 1137 PUSHs (&PL_sv_yes);
968 PUSHs (fullname); 1138 PUSHs (fullname);
969 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1139 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
970 PUTBACK; 1140 PUTBACK;
971 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1141 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
972 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1142 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
973 SPAGAIN; 1143 SPAGAIN;
974 FREETMPS; 1144 FREETMPS;
… …
977 } 1147 }
978 1148
979 oldcxix = cxstack_ix; 1149 oldcxix = cxstack_ix;
980 } 1150 }
981 1151
982 if (cctx->flags & CC_TRACE_LINE) 1152 if (cctx_current->flags & CC_TRACE_LINE)
983 { 1153 {
984 dSP; 1154 dSP;
985 1155
986 PL_runops = RUNOPS_DEFAULT; 1156 PL_runops = RUNOPS_DEFAULT;
987 ENTER; 1157 ENTER;
… …
1006 1176
1007 TAINT_NOT; 1177 TAINT_NOT;
1008 return 0; 1178 return 0;
1009} 1179}
1010 1180
1011/* inject a fake call to Coro::State::_cctx_init into the execution */ 1181static struct CoroSLF cctx_ssl_frame;
1012/* _cctx_init should be careful, as it could be called at almost any time */ 1182
1013/* during execution of a perl program */ 1183static void
1184slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1185{
1186 ta->prev = 0;
1187}
1188
1189static int
1190slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1191{
1192 *frame = cctx_ssl_frame;
1193
1194 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1195}
1196
1197/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1014static void NOINLINE 1198static void NOINLINE
1015cctx_prepare (pTHX_ coro_cctx *cctx) 1199cctx_prepare (pTHX)
1016{ 1200{
1017 dSP;
1018 LOGOP myop;
1019
1020 PL_top_env = &PL_start_env; 1201 PL_top_env = &PL_start_env;
1021 1202
1022 if (cctx->flags & CC_TRACE) 1203 if (cctx_current->flags & CC_TRACE)
1023 PL_runops = runops_trace; 1204 PL_runops = runops_trace;
1024 1205
1025 Zero (&myop, 1, LOGOP); 1206 /* we already must be executing an SLF op, there is no other valid way
1026 myop.op_next = PL_op; 1207 * that can lead to creation of a new cctx */
1027 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1208 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1209 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1028 1210
1029 PUSHMARK (SP); 1211 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1030 EXTEND (SP, 2); 1212 cctx_ssl_frame = slf_frame;
1031 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1213
1032 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1214 slf_frame.prepare = slf_prepare_set_stacklevel;
1033 PUTBACK; 1215 slf_frame.check = slf_check_set_stacklevel;
1034 PL_op = (OP *)&myop; 1216}
1035 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1217
1036 SPAGAIN; 1218/* the tail of transfer: execute stuff we can only do after a transfer */
1219INLINE void
1220transfer_tail (pTHX)
1221{
1222 free_coro_mortal (aTHX);
1037} 1223}
1038 1224
1039/* 1225/*
1040 * this is a _very_ stripped down perl interpreter ;) 1226 * this is a _very_ stripped down perl interpreter ;)
1041 */ 1227 */
1042static void 1228static void
1043cctx_run (void *arg) 1229cctx_run (void *arg)
1044{ 1230{
1231#ifdef USE_ITHREADS
1232# if CORO_PTHREAD
1233 PERL_SET_CONTEXT (coro_thx);
1234# endif
1235#endif
1236 {
1045 dTHX; 1237 dTHX;
1046 1238
1047 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1239 /* normally we would need to skip the entersub here */
1048 UNLOCK; 1240 /* not doing so will re-execute it, which is exactly what we want */
1049
1050 /* we now skip the entersub that lead to transfer() */
1051 PL_op = PL_op->op_next; 1241 /* PL_nop = PL_nop->op_next */
1052 1242
1053 /* inject a fake subroutine call to cctx_init */ 1243 /* inject a fake subroutine call to cctx_init */
1054 cctx_prepare (aTHX_ (coro_cctx *)arg); 1244 cctx_prepare (aTHX);
1055 1245
1246 /* cctx_run is the alternative tail of transfer() */
1247 transfer_tail (aTHX);
1248
1056 /* somebody or something will hit me for both perl_run and PL_restartop */ 1249 /* somebody or something will hit me for both perl_run and PL_restartop */
1057 PL_restartop = PL_op; 1250 PL_restartop = PL_op;
1058 perl_run (PL_curinterp); 1251 perl_run (PL_curinterp);
1059
1060 /* 1252 /*
1253 * Unfortunately, there is no way to get at the return values of the
1254 * coro body here, as perl_run destroys these
1255 */
1256
1257 /*
1061 * If perl-run returns we assume exit() was being called or the coro 1258 * If perl-run returns we assume exit() was being called or the coro
1062 * fell off the end, which seems to be the only valid (non-bug) 1259 * fell off the end, which seems to be the only valid (non-bug)
1063 * reason for perl_run to return. We try to exit by jumping to the 1260 * reason for perl_run to return. We try to exit by jumping to the
1064 * bootstrap-time "top" top_env, as we cannot restore the "main" 1261 * bootstrap-time "top" top_env, as we cannot restore the "main"
1065 * coroutine as Coro has no such concept 1262 * coroutine as Coro has no such concept.
1263 * This actually isn't valid with the pthread backend, but OSes requiring
1264 * that backend are too broken to do it in a standards-compliant way.
1066 */ 1265 */
1067 PL_top_env = main_top_env; 1266 PL_top_env = main_top_env;
1068 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1267 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1268 }
1069} 1269}
1070 1270
1071static coro_cctx * 1271static coro_cctx *
1072cctx_new () 1272cctx_new ()
1073{ 1273{
1074 coro_cctx *cctx; 1274 coro_cctx *cctx;
1275
1276 ++cctx_count;
1277 New (0, cctx, 1, coro_cctx);
1278
1279 cctx->gen = cctx_gen;
1280 cctx->flags = 0;
1281 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1282
1283 return cctx;
1284}
1285
1286/* create a new cctx only suitable as source */
1287static coro_cctx *
1288cctx_new_empty ()
1289{
1290 coro_cctx *cctx = cctx_new ();
1291
1292 cctx->sptr = 0;
1293 coro_create (&cctx->cctx, 0, 0, 0, 0);
1294
1295 return cctx;
1296}
1297
1298/* create a new cctx suitable as destination/running a perl interpreter */
1299static coro_cctx *
1300cctx_new_run ()
1301{
1302 coro_cctx *cctx = cctx_new ();
1075 void *stack_start; 1303 void *stack_start;
1076 size_t stack_size; 1304 size_t stack_size;
1077 1305
1078 ++cctx_count;
1079
1080 Newz (0, cctx, 1, coro_cctx);
1081
1082#if HAVE_MMAP 1306#if HAVE_MMAP
1083 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1307 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1084 /* mmap supposedly does allocate-on-write for us */ 1308 /* mmap supposedly does allocate-on-write for us */
1085 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1309 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1086 1310
1087 if (cctx->sptr != (void *)-1) 1311 if (cctx->sptr != (void *)-1)
1088 { 1312 {
1089# if CORO_STACKGUARD 1313 #if CORO_STACKGUARD
1090 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1314 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1091# endif 1315 #endif
1092 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1316 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1093 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1317 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1094 cctx->flags |= CC_MAPPED; 1318 cctx->flags |= CC_MAPPED;
1095 } 1319 }
1096 else 1320 else
1097#endif 1321#endif
1098 { 1322 {
1099 cctx->ssize = coro_stacksize * (long)sizeof (long); 1323 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1100 New (0, cctx->sptr, coro_stacksize, long); 1324 New (0, cctx->sptr, cctx_stacksize, long);
1101 1325
1102 if (!cctx->sptr) 1326 if (!cctx->sptr)
1103 { 1327 {
1104 perror ("FATAL: unable to allocate stack for coroutine"); 1328 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1105 _exit (EXIT_FAILURE); 1329 _exit (EXIT_FAILURE);
1106 } 1330 }
1107 1331
1108 stack_start = cctx->sptr; 1332 stack_start = cctx->sptr;
1109 stack_size = cctx->ssize; 1333 stack_size = cctx->ssize;
1110 } 1334 }
1111 1335
1112 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1336 #if CORO_USE_VALGRIND
1337 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1338 #endif
1339
1113 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1340 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1114 1341
1115 return cctx; 1342 return cctx;
1116} 1343}
1117 1344
… …
1119cctx_destroy (coro_cctx *cctx) 1346cctx_destroy (coro_cctx *cctx)
1120{ 1347{
1121 if (!cctx) 1348 if (!cctx)
1122 return; 1349 return;
1123 1350
1351 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1352
1124 --cctx_count; 1353 --cctx_count;
1354 coro_destroy (&cctx->cctx);
1125 1355
1356 /* coro_transfer creates new, empty cctx's */
1357 if (cctx->sptr)
1358 {
1126#if CORO_USE_VALGRIND 1359 #if CORO_USE_VALGRIND
1127 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1360 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1128#endif 1361 #endif
1129 1362
1130#if HAVE_MMAP 1363#if HAVE_MMAP
1131 if (cctx->flags & CC_MAPPED) 1364 if (cctx->flags & CC_MAPPED)
1132 munmap (cctx->sptr, cctx->ssize); 1365 munmap (cctx->sptr, cctx->ssize);
1133 else 1366 else
1134#endif 1367#endif
1135 Safefree (cctx->sptr); 1368 Safefree (cctx->sptr);
1369 }
1136 1370
1137 Safefree (cctx); 1371 Safefree (cctx);
1138} 1372}
1139 1373
1140/* wether this cctx should be destructed */ 1374/* wether this cctx should be destructed */
1141#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1375#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1142 1376
1143static coro_cctx * 1377static coro_cctx *
1144cctx_get (pTHX) 1378cctx_get (pTHX)
1145{ 1379{
1146 while (expect_true (cctx_first)) 1380 while (expect_true (cctx_first))
… …
1153 return cctx; 1387 return cctx;
1154 1388
1155 cctx_destroy (cctx); 1389 cctx_destroy (cctx);
1156 } 1390 }
1157 1391
1158 return cctx_new (); 1392 return cctx_new_run ();
1159} 1393}
1160 1394
1161static void 1395static void
1162cctx_put (coro_cctx *cctx) 1396cctx_put (coro_cctx *cctx)
1163{ 1397{
1398 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1399
1164 /* free another cctx if overlimit */ 1400 /* free another cctx if overlimit */
1165 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1401 if (expect_false (cctx_idle >= cctx_max_idle))
1166 { 1402 {
1167 coro_cctx *first = cctx_first; 1403 coro_cctx *first = cctx_first;
1168 cctx_first = first->next; 1404 cctx_first = first->next;
1169 --cctx_idle; 1405 --cctx_idle;
1170 1406
… …
1179/** coroutine switching *****************************************************/ 1415/** coroutine switching *****************************************************/
1180 1416
1181static void 1417static void
1182transfer_check (pTHX_ struct coro *prev, struct coro *next) 1418transfer_check (pTHX_ struct coro *prev, struct coro *next)
1183{ 1419{
1420 /* TODO: throwing up here is considered harmful */
1421
1184 if (expect_true (prev != next)) 1422 if (expect_true (prev != next))
1185 { 1423 {
1186 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1424 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1187 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1425 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1188 1426
1189 if (expect_false (next->flags & CF_RUNNING))
1190 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1191
1192 if (expect_false (next->flags & CF_DESTROYED)) 1427 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1193 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1428 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1194 1429
1195#if !PERL_VERSION_ATLEAST (5,10,0) 1430#if !PERL_VERSION_ATLEAST (5,10,0)
1196 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1431 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1197 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1432 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1198#endif 1433#endif
1199 } 1434 }
1200} 1435}
1201 1436
1202/* always use the TRANSFER macro */ 1437/* always use the TRANSFER macro */
1203static void NOINLINE 1438static void NOINLINE /* noinline so we have a fixed stackframe */
1204transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1439transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1205{ 1440{
1206 dSTACKLEVEL; 1441 dSTACKLEVEL;
1207 static volatile int has_throw;
1208 1442
1209 /* sometimes transfer is only called to set idle_sp */ 1443 /* sometimes transfer is only called to set idle_sp */
1210 if (expect_false (!next)) 1444 if (expect_false (!prev))
1211 { 1445 {
1212 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1446 cctx_current->idle_sp = STACKLEVEL;
1213 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1447 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1214 } 1448 }
1215 else if (expect_true (prev != next)) 1449 else if (expect_true (prev != next))
1216 { 1450 {
1217 coro_cctx *prev__cctx; 1451 coro_cctx *cctx_prev;
1218 1452
1219 if (expect_false (prev->flags & CF_NEW)) 1453 if (expect_false (prev->flags & CF_NEW))
1220 { 1454 {
1221 /* create a new empty context */ 1455 /* create a new empty/source context */
1222 Newz (0, prev->cctx, 1, coro_cctx);
1223 prev->flags &= ~CF_NEW; 1456 prev->flags &= ~CF_NEW;
1224 prev->flags |= CF_RUNNING; 1457 prev->flags |= CF_RUNNING;
1225 } 1458 }
1226 1459
1227 prev->flags &= ~CF_RUNNING; 1460 prev->flags &= ~CF_RUNNING;
1228 next->flags |= CF_RUNNING; 1461 next->flags |= CF_RUNNING;
1229
1230 LOCK;
1231 1462
1232 /* first get rid of the old state */ 1463 /* first get rid of the old state */
1233 save_perl (aTHX_ prev); 1464 save_perl (aTHX_ prev);
1234 1465
1235 if (expect_false (next->flags & CF_NEW)) 1466 if (expect_false (next->flags & CF_NEW))
… …
1240 coro_setup (aTHX_ next); 1471 coro_setup (aTHX_ next);
1241 } 1472 }
1242 else 1473 else
1243 load_perl (aTHX_ next); 1474 load_perl (aTHX_ next);
1244 1475
1245 prev__cctx = prev->cctx;
1246
1247 /* possibly "free" the cctx */ 1476 /* possibly untie and reuse the cctx */
1248 if (expect_true ( 1477 if (expect_true (
1249 prev__cctx->idle_sp == STACKLEVEL 1478 cctx_current->idle_sp == STACKLEVEL
1250 && !(prev__cctx->flags & CC_TRACE) 1479 && !(cctx_current->flags & CC_TRACE)
1251 && !force_cctx 1480 && !force_cctx
1252 )) 1481 ))
1253 { 1482 {
1254 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1483 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1255 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1484 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1256 1485
1257 prev->cctx = 0;
1258
1259 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1486 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1260 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1487 /* without this the next cctx_get might destroy the running cctx while still in use */
1261 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1488 if (expect_false (CCTX_EXPIRED (cctx_current)))
1262 if (!next->cctx) 1489 if (expect_true (!next->cctx))
1263 next->cctx = cctx_get (aTHX); 1490 next->cctx = cctx_get (aTHX);
1264 1491
1265 cctx_put (prev__cctx); 1492 cctx_put (cctx_current);
1266 } 1493 }
1494 else
1495 prev->cctx = cctx_current;
1267 1496
1268 ++next->usecount; 1497 ++next->usecount;
1269 1498
1270 if (expect_true (!next->cctx)) 1499 cctx_prev = cctx_current;
1271 next->cctx = cctx_get (aTHX); 1500 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1272 1501
1273 has_throw = !!next->throw; 1502 next->cctx = 0;
1274 1503
1275 if (expect_false (prev__cctx != next->cctx)) 1504 if (expect_false (cctx_prev != cctx_current))
1276 { 1505 {
1277 prev__cctx->top_env = PL_top_env; 1506 cctx_prev->top_env = PL_top_env;
1278 PL_top_env = next->cctx->top_env; 1507 PL_top_env = cctx_current->top_env;
1279 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1508 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1280 } 1509 }
1281 1510
1282 free_coro_mortal (aTHX); 1511 transfer_tail (aTHX);
1283 UNLOCK;
1284
1285 if (expect_false (has_throw))
1286 {
1287 struct coro *coro = SvSTATE (coro_current);
1288
1289 if (coro->throw)
1290 {
1291 SV *exception = coro->throw;
1292 coro->throw = 0;
1293 sv_setsv (ERRSV, exception);
1294 croak (0);
1295 }
1296 }
1297 } 1512 }
1298} 1513}
1299
1300struct transfer_args
1301{
1302 struct coro *prev, *next;
1303};
1304 1514
1305#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1515#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1306#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1516#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1307 1517
1308/** high level stuff ********************************************************/ 1518/** high level stuff ********************************************************/
… …
1310static int 1520static int
1311coro_state_destroy (pTHX_ struct coro *coro) 1521coro_state_destroy (pTHX_ struct coro *coro)
1312{ 1522{
1313 if (coro->flags & CF_DESTROYED) 1523 if (coro->flags & CF_DESTROYED)
1314 return 0; 1524 return 0;
1525
1526 if (coro->on_destroy && !PL_dirty)
1527 coro->on_destroy (aTHX_ coro);
1315 1528
1316 coro->flags |= CF_DESTROYED; 1529 coro->flags |= CF_DESTROYED;
1317 1530
1318 if (coro->flags & CF_READY) 1531 if (coro->flags & CF_READY)
1319 { 1532 {
1320 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1533 /* reduce nready, as destroying a ready coro effectively unreadies it */
1321 /* alternative: look through all ready queues and remove the coro */ 1534 /* alternative: look through all ready queues and remove the coro */
1322 LOCK;
1323 --coro_nready; 1535 --coro_nready;
1324 UNLOCK;
1325 } 1536 }
1326 else 1537 else
1327 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1538 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1328 1539
1329 if (coro->mainstack && coro->mainstack != main_mainstack) 1540 if (coro->mainstack
1330 { 1541 && coro->mainstack != main_mainstack
1331 struct coro temp; 1542 && coro->slot
1332 1543 && !PL_dirty)
1333 if (coro->flags & CF_RUNNING)
1334 croak ("FATAL: tried to destroy currently running coroutine");
1335
1336 save_perl (aTHX_ &temp);
1337 load_perl (aTHX_ coro);
1338
1339 coro_destroy (aTHX_ coro); 1544 coro_destruct_perl (aTHX_ coro);
1340
1341 load_perl (aTHX_ &temp);
1342
1343 coro->slot = 0;
1344 }
1345 1545
1346 cctx_destroy (coro->cctx); 1546 cctx_destroy (coro->cctx);
1547 SvREFCNT_dec (coro->startcv);
1347 SvREFCNT_dec (coro->args); 1548 SvREFCNT_dec (coro->args);
1549 SvREFCNT_dec (CORO_THROW);
1348 1550
1349 if (coro->next) coro->next->prev = coro->prev; 1551 if (coro->next) coro->next->prev = coro->prev;
1350 if (coro->prev) coro->prev->next = coro->next; 1552 if (coro->prev) coro->prev->next = coro->next;
1351 if (coro == coro_first) coro_first = coro->next; 1553 if (coro == coro_first) coro_first = coro->next;
1352 1554
… …
1390# define MGf_DUP 0 1592# define MGf_DUP 0
1391#endif 1593#endif
1392}; 1594};
1393 1595
1394static void 1596static void
1395prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1597prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1396{ 1598{
1397 ta->prev = SvSTATE (prev_sv); 1599 ta->prev = SvSTATE (prev_sv);
1398 ta->next = SvSTATE (next_sv); 1600 ta->next = SvSTATE (next_sv);
1399 TRANSFER_CHECK (*ta); 1601 TRANSFER_CHECK (*ta);
1400} 1602}
1401 1603
1402static void 1604static void
1403api_transfer (SV *prev_sv, SV *next_sv) 1605api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1404{ 1606{
1405 dTHX;
1406 struct transfer_args ta; 1607 struct coro_transfer_args ta;
1407 1608
1408 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1609 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1409 TRANSFER (ta, 1); 1610 TRANSFER (ta, 1);
1410} 1611}
1411 1612
1613/*****************************************************************************/
1614/* gensub: simple closure generation utility */
1615
1616#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1617
1618/* create a closure from XS, returns a code reference */
1619/* the arg can be accessed via GENSUB_ARG from the callback */
1620/* the callback must use dXSARGS/XSRETURN */
1621static SV *
1622gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1623{
1624 CV *cv = (CV *)newSV (0);
1625
1626 sv_upgrade ((SV *)cv, SVt_PVCV);
1627
1628 CvANON_on (cv);
1629 CvISXSUB_on (cv);
1630 CvXSUB (cv) = xsub;
1631 GENSUB_ARG = arg;
1632
1633 return newRV_noinc ((SV *)cv);
1634}
1635
1412/** Coro ********************************************************************/ 1636/** Coro ********************************************************************/
1413 1637
1414static void 1638INLINE void
1415coro_enq (pTHX_ SV *coro_sv) 1639coro_enq (pTHX_ struct coro *coro)
1416{ 1640{
1417 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1641 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1418}
1419 1642
1420static SV * 1643 SvREFCNT_inc_NN (coro->hv);
1644
1645 coro->next_ready = 0;
1646 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1647 ready [1] = coro;
1648}
1649
1650INLINE struct coro *
1421coro_deq (pTHX) 1651coro_deq (pTHX)
1422{ 1652{
1423 int prio; 1653 int prio;
1424 1654
1425 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1655 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1426 if (AvFILLp (coro_ready [prio]) >= 0) 1656 {
1427 return av_shift (coro_ready [prio]); 1657 struct coro **ready = coro_ready [prio];
1658
1659 if (ready [0])
1660 {
1661 struct coro *coro = ready [0];
1662 ready [0] = coro->next_ready;
1663 return coro;
1664 }
1665 }
1428 1666
1429 return 0; 1667 return 0;
1430} 1668}
1431 1669
1432static int 1670static int
1433api_ready (SV *coro_sv) 1671api_ready (pTHX_ SV *coro_sv)
1434{ 1672{
1435 dTHX;
1436 struct coro *coro; 1673 struct coro *coro;
1437 SV *sv_hook; 1674 SV *sv_hook;
1438 void (*xs_hook)(void); 1675 void (*xs_hook)(void);
1439 1676
1440 if (SvROK (coro_sv))
1441 coro_sv = SvRV (coro_sv);
1442
1443 coro = SvSTATE (coro_sv); 1677 coro = SvSTATE (coro_sv);
1444 1678
1445 if (coro->flags & CF_READY) 1679 if (coro->flags & CF_READY)
1446 return 0; 1680 return 0;
1447 1681
1448 coro->flags |= CF_READY; 1682 coro->flags |= CF_READY;
1449 1683
1450 LOCK;
1451
1452 sv_hook = coro_nready ? 0 : coro_readyhook; 1684 sv_hook = coro_nready ? 0 : coro_readyhook;
1453 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1685 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1454 1686
1455 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1687 coro_enq (aTHX_ coro);
1456 ++coro_nready; 1688 ++coro_nready;
1457 1689
1458 UNLOCK;
1459
1460 if (sv_hook) 1690 if (sv_hook)
1461 { 1691 {
1462 dSP; 1692 dSP;
1463 1693
1464 ENTER; 1694 ENTER;
1465 SAVETMPS; 1695 SAVETMPS;
1466 1696
1467 PUSHMARK (SP); 1697 PUSHMARK (SP);
1468 PUTBACK; 1698 PUTBACK;
1469 call_sv (sv_hook, G_DISCARD); 1699 call_sv (sv_hook, G_VOID | G_DISCARD);
1470 SPAGAIN;
1471 1700
1472 FREETMPS; 1701 FREETMPS;
1473 LEAVE; 1702 LEAVE;
1474 } 1703 }
1475 1704
… …
1478 1707
1479 return 1; 1708 return 1;
1480} 1709}
1481 1710
1482static int 1711static int
1483api_is_ready (SV *coro_sv) 1712api_is_ready (pTHX_ SV *coro_sv)
1484{ 1713{
1485 dTHX;
1486 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1714 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1487} 1715}
1488 1716
1489static void 1717/* expects to own a reference to next->hv */
1718INLINE void
1490prepare_schedule (pTHX_ struct transfer_args *ta) 1719prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1491{ 1720{
1492 SV *prev_sv, *next_sv;
1493
1494 for (;;)
1495 {
1496 LOCK;
1497 next_sv = coro_deq (aTHX);
1498
1499 /* nothing to schedule: call the idle handler */
1500 if (expect_false (!next_sv))
1501 {
1502 dSP;
1503 UNLOCK;
1504
1505 ENTER;
1506 SAVETMPS;
1507
1508 PUSHMARK (SP);
1509 PUTBACK;
1510 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1511 SPAGAIN;
1512
1513 FREETMPS;
1514 LEAVE;
1515 continue;
1516 }
1517
1518 ta->next = SvSTATE (next_sv);
1519
1520 /* cannot transfer to destroyed coros, skip and look for next */
1521 if (expect_false (ta->next->flags & CF_DESTROYED))
1522 {
1523 UNLOCK;
1524 SvREFCNT_dec (next_sv);
1525 /* coro_nready is already taken care of by destroy */
1526 continue;
1527 }
1528
1529 --coro_nready;
1530 UNLOCK;
1531 break;
1532 }
1533
1534 /* free this only after the transfer */
1535 prev_sv = SvRV (coro_current); 1721 SV *prev_sv = SvRV (coro_current);
1722
1536 ta->prev = SvSTATE (prev_sv); 1723 ta->prev = SvSTATE_hv (prev_sv);
1724 ta->next = next;
1725
1537 TRANSFER_CHECK (*ta); 1726 TRANSFER_CHECK (*ta);
1538 assert (ta->next->flags & CF_READY); 1727
1539 ta->next->flags &= ~CF_READY;
1540 SvRV_set (coro_current, next_sv); 1728 SvRV_set (coro_current, (SV *)next->hv);
1541 1729
1542 LOCK;
1543 free_coro_mortal (aTHX); 1730 free_coro_mortal (aTHX);
1544 coro_mortal = prev_sv; 1731 coro_mortal = prev_sv;
1545 UNLOCK;
1546} 1732}
1547 1733
1548static void 1734static void
1735prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1736{
1737 for (;;)
1738 {
1739 struct coro *next = coro_deq (aTHX);
1740
1741 if (expect_true (next))
1742 {
1743 /* cannot transfer to destroyed coros, skip and look for next */
1744 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1745 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1746 else
1747 {
1748 next->flags &= ~CF_READY;
1749 --coro_nready;
1750
1751 prepare_schedule_to (aTHX_ ta, next);
1752 break;
1753 }
1754 }
1755 else
1756 {
1757 /* nothing to schedule: call the idle handler */
1758 if (SvROK (sv_idle)
1759 && SvOBJECT (SvRV (sv_idle)))
1760 {
1761 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1762 api_ready (aTHX_ SvRV (sv_idle));
1763 --coro_nready;
1764 }
1765 else
1766 {
1767 dSP;
1768
1769 ENTER;
1770 SAVETMPS;
1771
1772 PUSHMARK (SP);
1773 PUTBACK;
1774 call_sv (sv_idle, G_VOID | G_DISCARD);
1775
1776 FREETMPS;
1777 LEAVE;
1778 }
1779 }
1780 }
1781}
1782
1783INLINE void
1549prepare_cede (pTHX_ struct transfer_args *ta) 1784prepare_cede (pTHX_ struct coro_transfer_args *ta)
1550{ 1785{
1551 api_ready (coro_current); 1786 api_ready (aTHX_ coro_current);
1552 prepare_schedule (aTHX_ ta); 1787 prepare_schedule (aTHX_ ta);
1553} 1788}
1554 1789
1790INLINE void
1791prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1792{
1793 SV *prev = SvRV (coro_current);
1794
1795 if (coro_nready)
1796 {
1797 prepare_schedule (aTHX_ ta);
1798 api_ready (aTHX_ prev);
1799 }
1800 else
1801 prepare_nop (aTHX_ ta);
1802}
1803
1804static void
1805api_schedule (pTHX)
1806{
1807 struct coro_transfer_args ta;
1808
1809 prepare_schedule (aTHX_ &ta);
1810 TRANSFER (ta, 1);
1811}
1812
1813static void
1814api_schedule_to (pTHX_ SV *coro_sv)
1815{
1816 struct coro_transfer_args ta;
1817 struct coro *next = SvSTATE (coro_sv);
1818
1819 SvREFCNT_inc_NN (coro_sv);
1820 prepare_schedule_to (aTHX_ &ta, next);
1821}
1822
1555static int 1823static int
1556prepare_cede_notself (pTHX_ struct transfer_args *ta) 1824api_cede (pTHX)
1557{ 1825{
1558 if (coro_nready) 1826 struct coro_transfer_args ta;
1559 { 1827
1560 SV *prev = SvRV (coro_current);
1561 prepare_schedule (aTHX_ ta); 1828 prepare_cede (aTHX_ &ta);
1562 api_ready (prev); 1829
1830 if (expect_true (ta.prev != ta.next))
1831 {
1832 TRANSFER (ta, 1);
1563 return 1; 1833 return 1;
1564 } 1834 }
1565 else 1835 else
1566 return 0; 1836 return 0;
1567} 1837}
1568 1838
1569static void
1570api_schedule (void)
1571{
1572 dTHX;
1573 struct transfer_args ta;
1574
1575 prepare_schedule (aTHX_ &ta);
1576 TRANSFER (ta, 1);
1577}
1578
1579static int 1839static int
1580api_cede (void) 1840api_cede_notself (pTHX)
1581{ 1841{
1582 dTHX; 1842 if (coro_nready)
1843 {
1583 struct transfer_args ta; 1844 struct coro_transfer_args ta;
1584 1845
1585 prepare_cede (aTHX_ &ta); 1846 prepare_cede_notself (aTHX_ &ta);
1586
1587 if (expect_true (ta.prev != ta.next))
1588 {
1589 TRANSFER (ta, 1); 1847 TRANSFER (ta, 1);
1590 return 1; 1848 return 1;
1591 } 1849 }
1592 else 1850 else
1593 return 0; 1851 return 0;
1594} 1852}
1595 1853
1596static int 1854static void
1597api_cede_notself (void)
1598{
1599 dTHX;
1600 struct transfer_args ta;
1601
1602 if (prepare_cede_notself (aTHX_ &ta))
1603 {
1604 TRANSFER (ta, 1);
1605 return 1;
1606 }
1607 else
1608 return 0;
1609}
1610
1611static void
1612api_trace (SV *coro_sv, int flags) 1855api_trace (pTHX_ SV *coro_sv, int flags)
1613{ 1856{
1614 dTHX;
1615 struct coro *coro = SvSTATE (coro_sv); 1857 struct coro *coro = SvSTATE (coro_sv);
1616 1858
1859 if (coro->flags & CF_RUNNING)
1860 croak ("cannot enable tracing on a running coroutine, caught");
1861
1617 if (flags & CC_TRACE) 1862 if (flags & CC_TRACE)
1618 { 1863 {
1619 if (!coro->cctx) 1864 if (!coro->cctx)
1620 coro->cctx = cctx_new (); 1865 coro->cctx = cctx_new_run ();
1621 else if (!(coro->cctx->flags & CC_TRACE)) 1866 else if (!(coro->cctx->flags & CC_TRACE))
1622 croak ("cannot enable tracing on coroutine with custom stack"); 1867 croak ("cannot enable tracing on coroutine with custom stack, caught");
1623 1868
1624 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1869 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1625 } 1870 }
1626 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1871 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1627 { 1872 {
… …
1632 else 1877 else
1633 coro->slot->runops = RUNOPS_DEFAULT; 1878 coro->slot->runops = RUNOPS_DEFAULT;
1634 } 1879 }
1635} 1880}
1636 1881
1882static void
1883coro_call_on_destroy (pTHX_ struct coro *coro)
1884{
1885 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1886 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1887
1888 if (on_destroyp)
1889 {
1890 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1891
1892 while (AvFILLp (on_destroy) >= 0)
1893 {
1894 dSP; /* don't disturb outer sp */
1895 SV *cb = av_pop (on_destroy);
1896
1897 PUSHMARK (SP);
1898
1899 if (statusp)
1900 {
1901 int i;
1902 AV *status = (AV *)SvRV (*statusp);
1903 EXTEND (SP, AvFILLp (status) + 1);
1904
1905 for (i = 0; i <= AvFILLp (status); ++i)
1906 PUSHs (AvARRAY (status)[i]);
1907 }
1908
1909 PUTBACK;
1910 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1911 }
1912 }
1913}
1914
1915static void
1916slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1917{
1918 int i;
1919 HV *hv = (HV *)SvRV (coro_current);
1920 AV *av = newAV ();
1921
1922 av_extend (av, items - 1);
1923 for (i = 0; i < items; ++i)
1924 av_push (av, SvREFCNT_inc_NN (arg [i]));
1925
1926 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1927
1928 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1929 api_ready (aTHX_ sv_manager);
1930
1931 frame->prepare = prepare_schedule;
1932 frame->check = slf_check_repeat;
1933
1934 /* as a minor optimisation, we could unwind all stacks here */
1935 /* but that puts extra pressure on pp_slf, and is not worth much */
1936 /*coro_unwind_stacks (aTHX);*/
1937}
1938
1939/*****************************************************************************/
1940/* async pool handler */
1941
1637static int 1942static int
1638coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1943slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1639{ 1944{
1640 AV *padlist; 1945 HV *hv = (HV *)SvRV (coro_current);
1641 AV *av = (AV *)mg->mg_obj; 1946 struct coro *coro = (struct coro *)frame->data;
1642 1947
1643 abort (); 1948 if (!coro->invoke_cb)
1949 return 1; /* loop till we have invoke */
1950 else
1951 {
1952 hv_store (hv, "desc", sizeof ("desc") - 1,
1953 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1954
1955 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1956
1957 {
1958 dSP;
1959 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1960 PUTBACK;
1961 }
1962
1963 SvREFCNT_dec (GvAV (PL_defgv));
1964 GvAV (PL_defgv) = coro->invoke_av;
1965 coro->invoke_av = 0;
1966
1967 return 0;
1968 }
1969}
1970
1971static void
1972slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1973{
1974 HV *hv = (HV *)SvRV (coro_current);
1975 struct coro *coro = SvSTATE_hv ((SV *)hv);
1976
1977 if (expect_true (coro->saved_deffh))
1978 {
1979 /* subsequent iteration */
1980 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1981 coro->saved_deffh = 0;
1982
1983 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1984 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1985 {
1986 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1987 coro->invoke_av = newAV ();
1988
1989 frame->prepare = prepare_nop;
1990 }
1991 else
1992 {
1993 av_clear (GvAV (PL_defgv));
1994 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1995
1996 coro->prio = 0;
1997
1998 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1999 api_trace (aTHX_ coro_current, 0);
2000
2001 frame->prepare = prepare_schedule;
2002 av_push (av_async_pool, SvREFCNT_inc (hv));
2003 }
2004 }
2005 else
2006 {
2007 /* first iteration, simply fall through */
2008 frame->prepare = prepare_nop;
2009 }
2010
2011 frame->check = slf_check_pool_handler;
2012 frame->data = (void *)coro;
2013}
2014
2015/*****************************************************************************/
2016/* rouse callback */
2017
2018#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2019
2020static void
2021coro_rouse_callback (pTHX_ CV *cv)
2022{
2023 dXSARGS;
2024 SV *data = (SV *)GENSUB_ARG;
2025
2026 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2027 {
2028 /* first call, set args */
2029 SV *coro = SvRV (data);
2030 AV *av = newAV ();
2031
2032 SvRV_set (data, (SV *)av);
2033
2034 /* better take a full copy of the arguments */
2035 while (items--)
2036 av_store (av, items, newSVsv (ST (items)));
2037
2038 api_ready (aTHX_ coro);
2039 SvREFCNT_dec (coro);
2040 }
2041
2042 XSRETURN_EMPTY;
2043}
2044
2045static int
2046slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2047{
2048 SV *data = (SV *)frame->data;
2049
2050 if (CORO_THROW)
2051 return 0;
2052
2053 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2054 return 1;
2055
2056 /* now push all results on the stack */
2057 {
2058 dSP;
2059 AV *av = (AV *)SvRV (data);
2060 int i;
2061
2062 EXTEND (SP, AvFILLp (av) + 1);
2063 for (i = 0; i <= AvFILLp (av); ++i)
2064 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2065
2066 /* we have stolen the elements, so set length to zero and free */
2067 AvFILLp (av) = -1;
2068 av_undef (av);
2069
2070 PUTBACK;
2071 }
1644 2072
1645 return 0; 2073 return 0;
1646} 2074}
1647 2075
1648static MGVTBL coro_gensub_vtbl = { 2076static void
1649 0, 0, 0, 0, 2077slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1650 coro_gensub_free 2078{
1651}; 2079 SV *cb;
2080
2081 if (items)
2082 cb = arg [0];
2083 else
2084 {
2085 struct coro *coro = SvSTATE_current;
2086
2087 if (!coro->rouse_cb)
2088 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2089
2090 cb = sv_2mortal (coro->rouse_cb);
2091 coro->rouse_cb = 0;
2092 }
2093
2094 if (!SvROK (cb)
2095 || SvTYPE (SvRV (cb)) != SVt_PVCV
2096 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2097 croak ("Coro::rouse_wait called with illegal callback argument,");
2098
2099 {
2100 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2101 SV *data = (SV *)GENSUB_ARG;
2102
2103 frame->data = (void *)data;
2104 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2105 frame->check = slf_check_rouse_wait;
2106 }
2107}
2108
2109static SV *
2110coro_new_rouse_cb (pTHX)
2111{
2112 HV *hv = (HV *)SvRV (coro_current);
2113 struct coro *coro = SvSTATE_hv (hv);
2114 SV *data = newRV_inc ((SV *)hv);
2115 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2116
2117 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2118 SvREFCNT_dec (data); /* magicext increases the refcount */
2119
2120 SvREFCNT_dec (coro->rouse_cb);
2121 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2122
2123 return cb;
2124}
2125
2126/*****************************************************************************/
2127/* schedule-like-function opcode (SLF) */
2128
2129static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2130static const CV *slf_cv;
2131static SV **slf_argv;
2132static int slf_argc, slf_arga; /* count, allocated */
2133static I32 slf_ax; /* top of stack, for restore */
2134
2135/* this restores the stack in the case we patched the entersub, to */
2136/* recreate the stack frame as perl will on following calls */
2137/* since entersub cleared the stack */
2138static OP *
2139pp_restore (pTHX)
2140{
2141 int i;
2142 SV **SP = PL_stack_base + slf_ax;
2143
2144 PUSHMARK (SP);
2145
2146 EXTEND (SP, slf_argc + 1);
2147
2148 for (i = 0; i < slf_argc; ++i)
2149 PUSHs (sv_2mortal (slf_argv [i]));
2150
2151 PUSHs ((SV *)CvGV (slf_cv));
2152
2153 RETURNOP (slf_restore.op_first);
2154}
2155
2156static void
2157slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2158{
2159 SV **arg = (SV **)slf_frame.data;
2160
2161 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2162}
2163
2164static void
2165slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2166{
2167 if (items != 2)
2168 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2169
2170 frame->prepare = slf_prepare_transfer;
2171 frame->check = slf_check_nop;
2172 frame->data = (void *)arg; /* let's hope it will stay valid */
2173}
2174
2175static void
2176slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2177{
2178 frame->prepare = prepare_schedule;
2179 frame->check = slf_check_nop;
2180}
2181
2182static void
2183slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2184{
2185 struct coro *next = (struct coro *)slf_frame.data;
2186
2187 SvREFCNT_inc_NN (next->hv);
2188 prepare_schedule_to (aTHX_ ta, next);
2189}
2190
2191static void
2192slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2193{
2194 if (!items)
2195 croak ("Coro::schedule_to expects a coroutine argument, caught");
2196
2197 frame->data = (void *)SvSTATE (arg [0]);
2198 frame->prepare = slf_prepare_schedule_to;
2199 frame->check = slf_check_nop;
2200}
2201
2202static void
2203slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2204{
2205 api_ready (aTHX_ SvRV (coro_current));
2206
2207 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2208}
2209
2210static void
2211slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2212{
2213 frame->prepare = prepare_cede;
2214 frame->check = slf_check_nop;
2215}
2216
2217static void
2218slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2219{
2220 frame->prepare = prepare_cede_notself;
2221 frame->check = slf_check_nop;
2222}
2223
2224/*
2225 * these not obviously related functions are all rolled into one
2226 * function to increase chances that they all will call transfer with the same
2227 * stack offset
2228 * SLF stands for "schedule-like-function".
2229 */
2230static OP *
2231pp_slf (pTHX)
2232{
2233 I32 checkmark; /* mark SP to see how many elements check has pushed */
2234
2235 /* set up the slf frame, unless it has already been set-up */
2236 /* the latter happens when a new coro has been started */
2237 /* or when a new cctx was attached to an existing coroutine */
2238 if (expect_true (!slf_frame.prepare))
2239 {
2240 /* first iteration */
2241 dSP;
2242 SV **arg = PL_stack_base + TOPMARK + 1;
2243 int items = SP - arg; /* args without function object */
2244 SV *gv = *sp;
2245
2246 /* do a quick consistency check on the "function" object, and if it isn't */
2247 /* for us, divert to the real entersub */
2248 if (SvTYPE (gv) != SVt_PVGV
2249 || !GvCV (gv)
2250 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2251 return PL_ppaddr[OP_ENTERSUB](aTHX);
2252
2253 if (!(PL_op->op_flags & OPf_STACKED))
2254 {
2255 /* ampersand-form of call, use @_ instead of stack */
2256 AV *av = GvAV (PL_defgv);
2257 arg = AvARRAY (av);
2258 items = AvFILLp (av) + 1;
2259 }
2260
2261 /* now call the init function, which needs to set up slf_frame */
2262 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2263 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2264
2265 /* pop args */
2266 SP = PL_stack_base + POPMARK;
2267
2268 PUTBACK;
2269 }
2270
2271 /* now that we have a slf_frame, interpret it! */
2272 /* we use a callback system not to make the code needlessly */
2273 /* complicated, but so we can run multiple perl coros from one cctx */
2274
2275 do
2276 {
2277 struct coro_transfer_args ta;
2278
2279 slf_frame.prepare (aTHX_ &ta);
2280 TRANSFER (ta, 0);
2281
2282 checkmark = PL_stack_sp - PL_stack_base;
2283 }
2284 while (slf_frame.check (aTHX_ &slf_frame));
2285
2286 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2287
2288 /* exception handling */
2289 if (expect_false (CORO_THROW))
2290 {
2291 SV *exception = sv_2mortal (CORO_THROW);
2292
2293 CORO_THROW = 0;
2294 sv_setsv (ERRSV, exception);
2295 croak (0);
2296 }
2297
2298 /* return value handling - mostly like entersub */
2299 /* make sure we put something on the stack in scalar context */
2300 if (GIMME_V == G_SCALAR)
2301 {
2302 dSP;
2303 SV **bot = PL_stack_base + checkmark;
2304
2305 if (sp == bot) /* too few, push undef */
2306 bot [1] = &PL_sv_undef;
2307 else if (sp != bot + 1) /* too many, take last one */
2308 bot [1] = *sp;
2309
2310 SP = bot + 1;
2311
2312 PUTBACK;
2313 }
2314
2315 return NORMAL;
2316}
2317
2318static void
2319api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2320{
2321 int i;
2322 SV **arg = PL_stack_base + ax;
2323 int items = PL_stack_sp - arg + 1;
2324
2325 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2326
2327 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2328 && PL_op->op_ppaddr != pp_slf)
2329 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2330
2331 CvFLAGS (cv) |= CVf_SLF;
2332 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2333 slf_cv = cv;
2334
2335 /* we patch the op, and then re-run the whole call */
2336 /* we have to put the same argument on the stack for this to work */
2337 /* and this will be done by pp_restore */
2338 slf_restore.op_next = (OP *)&slf_restore;
2339 slf_restore.op_type = OP_CUSTOM;
2340 slf_restore.op_ppaddr = pp_restore;
2341 slf_restore.op_first = PL_op;
2342
2343 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2344
2345 if (PL_op->op_flags & OPf_STACKED)
2346 {
2347 if (items > slf_arga)
2348 {
2349 slf_arga = items;
2350 free (slf_argv);
2351 slf_argv = malloc (slf_arga * sizeof (SV *));
2352 }
2353
2354 slf_argc = items;
2355
2356 for (i = 0; i < items; ++i)
2357 slf_argv [i] = SvREFCNT_inc (arg [i]);
2358 }
2359 else
2360 slf_argc = 0;
2361
2362 PL_op->op_ppaddr = pp_slf;
2363 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2364
2365 PL_op = (OP *)&slf_restore;
2366}
2367
2368/*****************************************************************************/
2369/* dynamic wind */
2370
2371static void
2372on_enterleave_call (pTHX_ SV *cb)
2373{
2374 dSP;
2375
2376 PUSHSTACK;
2377
2378 PUSHMARK (SP);
2379 PUTBACK;
2380 call_sv (cb, G_VOID | G_DISCARD);
2381 SPAGAIN;
2382
2383 POPSTACK;
2384}
2385
2386static SV *
2387coro_avp_pop_and_free (pTHX_ AV **avp)
2388{
2389 AV *av = *avp;
2390 SV *res = av_pop (av);
2391
2392 if (AvFILLp (av) < 0)
2393 {
2394 *avp = 0;
2395 SvREFCNT_dec (av);
2396 }
2397
2398 return res;
2399}
2400
2401static void
2402coro_pop_on_enter (pTHX_ void *coro)
2403{
2404 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2405 SvREFCNT_dec (cb);
2406}
2407
2408static void
2409coro_pop_on_leave (pTHX_ void *coro)
2410{
2411 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2412 on_enterleave_call (aTHX_ sv_2mortal (cb));
2413}
1652 2414
1653/*****************************************************************************/ 2415/*****************************************************************************/
1654/* PerlIO::cede */ 2416/* PerlIO::cede */
1655 2417
1656typedef struct 2418typedef struct
… …
1662static IV 2424static IV
1663PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2425PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1664{ 2426{
1665 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2427 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1666 2428
1667 self->every = SvNV (arg); 2429 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1668 self->next = nvtime () + self->every; 2430 self->next = nvtime () + self->every;
1669 2431
1670 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2432 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1671} 2433}
1672 2434
… …
1684 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2446 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1685 double now = nvtime (); 2447 double now = nvtime ();
1686 2448
1687 if (now >= self->next) 2449 if (now >= self->next)
1688 { 2450 {
1689 api_cede (); 2451 api_cede (aTHX);
1690 self->next = now + self->every; 2452 self->next = now + self->every;
1691 } 2453 }
1692 2454
1693 return PerlIOBuf_flush (f); 2455 return PerlIOBuf_flush (aTHX_ f);
1694} 2456}
1695 2457
1696static PerlIO_funcs PerlIO_cede = 2458static PerlIO_funcs PerlIO_cede =
1697{ 2459{
1698 sizeof(PerlIO_funcs), 2460 sizeof(PerlIO_funcs),
… …
1723 PerlIOBuf_get_ptr, 2485 PerlIOBuf_get_ptr,
1724 PerlIOBuf_get_cnt, 2486 PerlIOBuf_get_cnt,
1725 PerlIOBuf_set_ptrcnt, 2487 PerlIOBuf_set_ptrcnt,
1726}; 2488};
1727 2489
2490/*****************************************************************************/
2491/* Coro::Semaphore & Coro::Signal */
2492
2493static SV *
2494coro_waitarray_new (pTHX_ int count)
2495{
2496 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2497 AV *av = newAV ();
2498 SV **ary;
2499
2500 /* unfortunately, building manually saves memory */
2501 Newx (ary, 2, SV *);
2502 AvALLOC (av) = ary;
2503#if PERL_VERSION_ATLEAST (5,10,0)
2504 AvARRAY (av) = ary;
2505#else
2506 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2507 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2508 SvPVX ((SV *)av) = (char *)ary;
2509#endif
2510 AvMAX (av) = 1;
2511 AvFILLp (av) = 0;
2512 ary [0] = newSViv (count);
2513
2514 return newRV_noinc ((SV *)av);
2515}
2516
2517/* semaphore */
2518
2519static void
2520coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2521{
2522 SV *count_sv = AvARRAY (av)[0];
2523 IV count = SvIVX (count_sv);
2524
2525 count += adjust;
2526 SvIVX (count_sv) = count;
2527
2528 /* now wake up as many waiters as are expected to lock */
2529 while (count > 0 && AvFILLp (av) > 0)
2530 {
2531 SV *cb;
2532
2533 /* swap first two elements so we can shift a waiter */
2534 AvARRAY (av)[0] = AvARRAY (av)[1];
2535 AvARRAY (av)[1] = count_sv;
2536 cb = av_shift (av);
2537
2538 if (SvOBJECT (cb))
2539 {
2540 api_ready (aTHX_ cb);
2541 --count;
2542 }
2543 else if (SvTYPE (cb) == SVt_PVCV)
2544 {
2545 dSP;
2546 PUSHMARK (SP);
2547 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2548 PUTBACK;
2549 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2550 }
2551
2552 SvREFCNT_dec (cb);
2553 }
2554}
2555
2556static void
2557coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2558{
2559 /* call $sem->adjust (0) to possibly wake up some other waiters */
2560 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2561}
2562
2563static int
2564slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2565{
2566 AV *av = (AV *)frame->data;
2567 SV *count_sv = AvARRAY (av)[0];
2568
2569 /* if we are about to throw, don't actually acquire the lock, just throw */
2570 if (CORO_THROW)
2571 return 0;
2572 else if (SvIVX (count_sv) > 0)
2573 {
2574 SvSTATE_current->on_destroy = 0;
2575
2576 if (acquire)
2577 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2578 else
2579 coro_semaphore_adjust (aTHX_ av, 0);
2580
2581 return 0;
2582 }
2583 else
2584 {
2585 int i;
2586 /* if we were woken up but can't down, we look through the whole */
2587 /* waiters list and only add us if we aren't in there already */
2588 /* this avoids some degenerate memory usage cases */
2589
2590 for (i = 1; i <= AvFILLp (av); ++i)
2591 if (AvARRAY (av)[i] == SvRV (coro_current))
2592 return 1;
2593
2594 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2595 return 1;
2596 }
2597}
2598
2599static int
2600slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2601{
2602 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2603}
2604
2605static int
2606slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2607{
2608 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2609}
2610
2611static void
2612slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2613{
2614 AV *av = (AV *)SvRV (arg [0]);
2615
2616 if (SvIVX (AvARRAY (av)[0]) > 0)
2617 {
2618 frame->data = (void *)av;
2619 frame->prepare = prepare_nop;
2620 }
2621 else
2622 {
2623 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2624
2625 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2626 frame->prepare = prepare_schedule;
2627
2628 /* to avoid race conditions when a woken-up coro gets terminated */
2629 /* we arrange for a temporary on_destroy that calls adjust (0) */
2630 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2631 }
2632}
2633
2634static void
2635slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2636{
2637 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2638 frame->check = slf_check_semaphore_down;
2639}
2640
2641static void
2642slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2643{
2644 if (items >= 2)
2645 {
2646 /* callback form */
2647 AV *av = (AV *)SvRV (arg [0]);
2648 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2649
2650 av_push (av, SvREFCNT_inc_NN (cb_cv));
2651
2652 if (SvIVX (AvARRAY (av)[0]) > 0)
2653 coro_semaphore_adjust (aTHX_ av, 0);
2654
2655 frame->prepare = prepare_nop;
2656 frame->check = slf_check_nop;
2657 }
2658 else
2659 {
2660 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2661 frame->check = slf_check_semaphore_wait;
2662 }
2663}
2664
2665/* signal */
2666
2667static void
2668coro_signal_wake (pTHX_ AV *av, int count)
2669{
2670 SvIVX (AvARRAY (av)[0]) = 0;
2671
2672 /* now signal count waiters */
2673 while (count > 0 && AvFILLp (av) > 0)
2674 {
2675 SV *cb;
2676
2677 /* swap first two elements so we can shift a waiter */
2678 cb = AvARRAY (av)[0];
2679 AvARRAY (av)[0] = AvARRAY (av)[1];
2680 AvARRAY (av)[1] = cb;
2681
2682 cb = av_shift (av);
2683
2684 if (SvTYPE (cb) == SVt_PVCV)
2685 {
2686 dSP;
2687 PUSHMARK (SP);
2688 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2689 PUTBACK;
2690 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2691 }
2692 else
2693 {
2694 api_ready (aTHX_ cb);
2695 sv_setiv (cb, 0); /* signal waiter */
2696 }
2697
2698 SvREFCNT_dec (cb);
2699
2700 --count;
2701 }
2702}
2703
2704static int
2705slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2706{
2707 /* if we are about to throw, also stop waiting */
2708 return SvROK ((SV *)frame->data) && !CORO_THROW;
2709}
2710
2711static void
2712slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2713{
2714 AV *av = (AV *)SvRV (arg [0]);
2715
2716 if (items >= 2)
2717 {
2718 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2719 av_push (av, SvREFCNT_inc_NN (cb_cv));
2720
2721 if (SvIVX (AvARRAY (av)[0]))
2722 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2723
2724 frame->prepare = prepare_nop;
2725 frame->check = slf_check_nop;
2726 }
2727 else if (SvIVX (AvARRAY (av)[0]))
2728 {
2729 SvIVX (AvARRAY (av)[0]) = 0;
2730 frame->prepare = prepare_nop;
2731 frame->check = slf_check_nop;
2732 }
2733 else
2734 {
2735 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2736
2737 av_push (av, waiter);
2738
2739 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2740 frame->prepare = prepare_schedule;
2741 frame->check = slf_check_signal_wait;
2742 }
2743}
2744
2745/*****************************************************************************/
2746/* Coro::AIO */
2747
2748#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2749
2750/* helper storage struct */
2751struct io_state
2752{
2753 int errorno;
2754 I32 laststype; /* U16 in 5.10.0 */
2755 int laststatval;
2756 Stat_t statcache;
2757};
2758
2759static void
2760coro_aio_callback (pTHX_ CV *cv)
2761{
2762 dXSARGS;
2763 AV *state = (AV *)GENSUB_ARG;
2764 SV *coro = av_pop (state);
2765 SV *data_sv = newSV (sizeof (struct io_state));
2766
2767 av_extend (state, items - 1);
2768
2769 sv_upgrade (data_sv, SVt_PV);
2770 SvCUR_set (data_sv, sizeof (struct io_state));
2771 SvPOK_only (data_sv);
2772
2773 {
2774 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2775
2776 data->errorno = errno;
2777 data->laststype = PL_laststype;
2778 data->laststatval = PL_laststatval;
2779 data->statcache = PL_statcache;
2780 }
2781
2782 /* now build the result vector out of all the parameters and the data_sv */
2783 {
2784 int i;
2785
2786 for (i = 0; i < items; ++i)
2787 av_push (state, SvREFCNT_inc_NN (ST (i)));
2788 }
2789
2790 av_push (state, data_sv);
2791
2792 api_ready (aTHX_ coro);
2793 SvREFCNT_dec (coro);
2794 SvREFCNT_dec ((AV *)state);
2795}
2796
2797static int
2798slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2799{
2800 AV *state = (AV *)frame->data;
2801
2802 /* if we are about to throw, return early */
2803 /* this does not cancel the aio request, but at least */
2804 /* it quickly returns */
2805 if (CORO_THROW)
2806 return 0;
2807
2808 /* one element that is an RV? repeat! */
2809 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2810 return 1;
2811
2812 /* restore status */
2813 {
2814 SV *data_sv = av_pop (state);
2815 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2816
2817 errno = data->errorno;
2818 PL_laststype = data->laststype;
2819 PL_laststatval = data->laststatval;
2820 PL_statcache = data->statcache;
2821
2822 SvREFCNT_dec (data_sv);
2823 }
2824
2825 /* push result values */
2826 {
2827 dSP;
2828 int i;
2829
2830 EXTEND (SP, AvFILLp (state) + 1);
2831 for (i = 0; i <= AvFILLp (state); ++i)
2832 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2833
2834 PUTBACK;
2835 }
2836
2837 return 0;
2838}
2839
2840static void
2841slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2842{
2843 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2844 SV *coro_hv = SvRV (coro_current);
2845 struct coro *coro = SvSTATE_hv (coro_hv);
2846
2847 /* put our coroutine id on the state arg */
2848 av_push (state, SvREFCNT_inc_NN (coro_hv));
2849
2850 /* first see whether we have a non-zero priority and set it as AIO prio */
2851 if (coro->prio)
2852 {
2853 dSP;
2854
2855 static SV *prio_cv;
2856 static SV *prio_sv;
2857
2858 if (expect_false (!prio_cv))
2859 {
2860 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2861 prio_sv = newSViv (0);
2862 }
2863
2864 PUSHMARK (SP);
2865 sv_setiv (prio_sv, coro->prio);
2866 XPUSHs (prio_sv);
2867
2868 PUTBACK;
2869 call_sv (prio_cv, G_VOID | G_DISCARD);
2870 }
2871
2872 /* now call the original request */
2873 {
2874 dSP;
2875 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2876 int i;
2877
2878 PUSHMARK (SP);
2879
2880 /* first push all args to the stack */
2881 EXTEND (SP, items + 1);
2882
2883 for (i = 0; i < items; ++i)
2884 PUSHs (arg [i]);
2885
2886 /* now push the callback closure */
2887 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2888
2889 /* now call the AIO function - we assume our request is uncancelable */
2890 PUTBACK;
2891 call_sv ((SV *)req, G_VOID | G_DISCARD);
2892 }
2893
2894 /* now that the requets is going, we loop toll we have a result */
2895 frame->data = (void *)state;
2896 frame->prepare = prepare_schedule;
2897 frame->check = slf_check_aio_req;
2898}
2899
2900static void
2901coro_aio_req_xs (pTHX_ CV *cv)
2902{
2903 dXSARGS;
2904
2905 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2906
2907 XSRETURN_EMPTY;
2908}
2909
2910/*****************************************************************************/
2911
2912#if CORO_CLONE
2913# include "clone.c"
2914#endif
1728 2915
1729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2916MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1730 2917
1731PROTOTYPES: DISABLE 2918PROTOTYPES: DISABLE
1732 2919
1733BOOT: 2920BOOT:
1734{ 2921{
1735#ifdef USE_ITHREADS 2922#ifdef USE_ITHREADS
1736 MUTEX_INIT (&coro_mutex); 2923# if CORO_PTHREAD
2924 coro_thx = PERL_GET_CONTEXT;
2925# endif
1737#endif 2926#endif
1738 BOOT_PAGESIZE; 2927 BOOT_PAGESIZE;
2928
2929 cctx_current = cctx_new_empty ();
1739 2930
1740 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2931 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1741 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2932 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1742 2933
1743 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2934 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1759 main_top_env = PL_top_env; 2950 main_top_env = PL_top_env;
1760 2951
1761 while (main_top_env->je_prev) 2952 while (main_top_env->je_prev)
1762 main_top_env = main_top_env->je_prev; 2953 main_top_env = main_top_env->je_prev;
1763 2954
2955 {
2956 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2957
2958 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2959 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2960
2961 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2962 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2963 }
2964
1764 coroapi.ver = CORO_API_VERSION; 2965 coroapi.ver = CORO_API_VERSION;
1765 coroapi.rev = CORO_API_REVISION; 2966 coroapi.rev = CORO_API_REVISION;
2967
1766 coroapi.transfer = api_transfer; 2968 coroapi.transfer = api_transfer;
2969
2970 coroapi.sv_state = SvSTATE_;
2971 coroapi.execute_slf = api_execute_slf;
2972 coroapi.prepare_nop = prepare_nop;
2973 coroapi.prepare_schedule = prepare_schedule;
2974 coroapi.prepare_cede = prepare_cede;
2975 coroapi.prepare_cede_notself = prepare_cede_notself;
1767 2976
1768 { 2977 {
1769 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2978 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1770 2979
1771 if (!svp) croak ("Time::HiRes is required"); 2980 if (!svp) croak ("Time::HiRes is required");
1772 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2981 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1773 2982
1774 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2983 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1775 } 2984 }
1776 2985
1777 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2986 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1778} 2987}
1779 2988
1780SV * 2989SV *
1781new (char *klass, ...) 2990new (char *klass, ...)
2991 ALIAS:
2992 Coro::new = 1
1782 CODE: 2993 CODE:
1783{ 2994{
1784 struct coro *coro; 2995 struct coro *coro;
1785 MAGIC *mg; 2996 MAGIC *mg;
1786 HV *hv; 2997 HV *hv;
2998 CV *cb;
1787 int i; 2999 int i;
3000
3001 if (items > 1)
3002 {
3003 cb = coro_sv_2cv (aTHX_ ST (1));
3004
3005 if (!ix)
3006 {
3007 if (CvISXSUB (cb))
3008 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3009
3010 if (!CvROOT (cb))
3011 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012 }
3013 }
1788 3014
1789 Newz (0, coro, 1, struct coro); 3015 Newz (0, coro, 1, struct coro);
1790 coro->args = newAV (); 3016 coro->args = newAV ();
1791 coro->flags = CF_NEW; 3017 coro->flags = CF_NEW;
1792 3018
… …
1797 coro->hv = hv = newHV (); 3023 coro->hv = hv = newHV ();
1798 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1799 mg->mg_flags |= MGf_DUP; 3025 mg->mg_flags |= MGf_DUP;
1800 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1801 3027
3028 if (items > 1)
3029 {
1802 av_extend (coro->args, items - 1); 3030 av_extend (coro->args, items - 1 + ix - 1);
3031
3032 if (ix)
3033 {
3034 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035 cb = cv_coro_run;
3036 }
3037
3038 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
1803 for (i = 1; i < items; i++) 3040 for (i = 2; i < items; i++)
1804 av_push (coro->args, newSVsv (ST (i))); 3041 av_push (coro->args, newSVsv (ST (i)));
3042 }
1805} 3043}
1806 OUTPUT: 3044 OUTPUT:
1807 RETVAL 3045 RETVAL
1808 3046
1809# these not obviously related functions are all rolled into the same xs
1810# function to increase chances that they all will call transfer with the same
1811# stack offset
1812void 3047void
1813_set_stacklevel (...) 3048transfer (...)
1814 ALIAS: 3049 PROTOTYPE: $$
1815 Coro::State::transfer = 1 3050 CODE:
1816 Coro::schedule = 2 3051 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1817 Coro::cede = 3
1818 Coro::cede_notself = 4
1819 CODE:
1820{
1821 struct transfer_args ta;
1822
1823 PUTBACK;
1824 switch (ix)
1825 {
1826 case 0:
1827 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1828 ta.next = 0;
1829 break;
1830
1831 case 1:
1832 if (items != 2)
1833 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1834
1835 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1836 break;
1837
1838 case 2:
1839 prepare_schedule (aTHX_ &ta);
1840 break;
1841
1842 case 3:
1843 prepare_cede (aTHX_ &ta);
1844 break;
1845
1846 case 4:
1847 if (!prepare_cede_notself (aTHX_ &ta))
1848 XSRETURN_EMPTY;
1849
1850 break;
1851 }
1852 SPAGAIN;
1853
1854 BARRIER;
1855 PUTBACK;
1856 TRANSFER (ta, 0);
1857 SPAGAIN; /* might be the sp of a different coroutine now */
1858 /* be extra careful not to ever do anything after TRANSFER */
1859}
1860 3052
1861bool 3053bool
1862_destroy (SV *coro_sv) 3054_destroy (SV *coro_sv)
1863 CODE: 3055 CODE:
1864 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3056 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1869_exit (int code) 3061_exit (int code)
1870 PROTOTYPE: $ 3062 PROTOTYPE: $
1871 CODE: 3063 CODE:
1872 _exit (code); 3064 _exit (code);
1873 3065
3066SV *
3067clone (Coro::State coro)
3068 CODE:
3069{
3070#if CORO_CLONE
3071 struct coro *ncoro = coro_clone (aTHX_ coro);
3072 MAGIC *mg;
3073 /* TODO: too much duplication */
3074 ncoro->hv = newHV ();
3075 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3076 mg->mg_flags |= MGf_DUP;
3077 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3078#else
3079 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3080#endif
3081}
3082 OUTPUT:
3083 RETVAL
3084
1874int 3085int
1875cctx_stacksize (int new_stacksize = 0) 3086cctx_stacksize (int new_stacksize = 0)
3087 PROTOTYPE: ;$
1876 CODE: 3088 CODE:
1877 RETVAL = coro_stacksize; 3089 RETVAL = cctx_stacksize;
1878 if (new_stacksize) 3090 if (new_stacksize)
3091 {
1879 coro_stacksize = new_stacksize; 3092 cctx_stacksize = new_stacksize;
3093 ++cctx_gen;
3094 }
1880 OUTPUT: 3095 OUTPUT:
1881 RETVAL 3096 RETVAL
1882 3097
1883int 3098int
3099cctx_max_idle (int max_idle = 0)
3100 PROTOTYPE: ;$
3101 CODE:
3102 RETVAL = cctx_max_idle;
3103 if (max_idle > 1)
3104 cctx_max_idle = max_idle;
3105 OUTPUT:
3106 RETVAL
3107
3108int
1884cctx_count () 3109cctx_count ()
3110 PROTOTYPE:
1885 CODE: 3111 CODE:
1886 RETVAL = cctx_count; 3112 RETVAL = cctx_count;
1887 OUTPUT: 3113 OUTPUT:
1888 RETVAL 3114 RETVAL
1889 3115
1890int 3116int
1891cctx_idle () 3117cctx_idle ()
3118 PROTOTYPE:
1892 CODE: 3119 CODE:
1893 RETVAL = cctx_idle; 3120 RETVAL = cctx_idle;
1894 OUTPUT: 3121 OUTPUT:
1895 RETVAL 3122 RETVAL
1896 3123
1897void 3124void
1898list () 3125list ()
3126 PROTOTYPE:
1899 PPCODE: 3127 PPCODE:
1900{ 3128{
1901 struct coro *coro; 3129 struct coro *coro;
1902 for (coro = coro_first; coro; coro = coro->next) 3130 for (coro = coro_first; coro; coro = coro->next)
1903 if (coro->hv) 3131 if (coro->hv)
… …
1910 eval = 1 3138 eval = 1
1911 CODE: 3139 CODE:
1912{ 3140{
1913 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3141 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1914 { 3142 {
1915 struct coro temp; 3143 struct coro *current = SvSTATE_current;
1916 3144
1917 if (!(coro->flags & CF_RUNNING)) 3145 if (current != coro)
1918 { 3146 {
1919 PUTBACK; 3147 PUTBACK;
1920 save_perl (aTHX_ &temp); 3148 save_perl (aTHX_ current);
1921 load_perl (aTHX_ coro); 3149 load_perl (aTHX_ coro);
3150 SPAGAIN;
1922 } 3151 }
1923 3152
1924 {
1925 dSP;
1926 ENTER;
1927 SAVETMPS;
1928 PUTBACK;
1929 PUSHSTACK; 3153 PUSHSTACK;
3154
1930 PUSHMARK (SP); 3155 PUSHMARK (SP);
3156 PUTBACK;
1931 3157
1932 if (ix) 3158 if (ix)
1933 eval_sv (coderef, 0); 3159 eval_sv (coderef, 0);
1934 else 3160 else
1935 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3161 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1936 3162
1937 POPSTACK; 3163 POPSTACK;
1938 SPAGAIN; 3164 SPAGAIN;
1939 FREETMPS;
1940 LEAVE;
1941 PUTBACK;
1942 }
1943 3165
1944 if (!(coro->flags & CF_RUNNING)) 3166 if (current != coro)
1945 { 3167 {
3168 PUTBACK;
1946 save_perl (aTHX_ coro); 3169 save_perl (aTHX_ coro);
1947 load_perl (aTHX_ &temp); 3170 load_perl (aTHX_ current);
1948 SPAGAIN; 3171 SPAGAIN;
1949 } 3172 }
1950 } 3173 }
1951} 3174}
1952 3175
… …
1956 ALIAS: 3179 ALIAS:
1957 is_ready = CF_READY 3180 is_ready = CF_READY
1958 is_running = CF_RUNNING 3181 is_running = CF_RUNNING
1959 is_new = CF_NEW 3182 is_new = CF_NEW
1960 is_destroyed = CF_DESTROYED 3183 is_destroyed = CF_DESTROYED
3184 is_suspended = CF_SUSPENDED
1961 CODE: 3185 CODE:
1962 RETVAL = boolSV (coro->flags & ix); 3186 RETVAL = boolSV (coro->flags & ix);
1963 OUTPUT: 3187 OUTPUT:
1964 RETVAL 3188 RETVAL
1965 3189
1966void 3190void
3191throw (Coro::State self, SV *throw = &PL_sv_undef)
3192 PROTOTYPE: $;$
3193 CODE:
3194{
3195 struct coro *current = SvSTATE_current;
3196 SV **throwp = self == current ? &CORO_THROW : &self->except;
3197 SvREFCNT_dec (*throwp);
3198 SvGETMAGIC (throw);
3199 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3200}
3201
3202void
1967api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3203api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3204 PROTOTYPE: $;$
3205 C_ARGS: aTHX_ coro, flags
1968 3206
1969SV * 3207SV *
1970has_cctx (Coro::State coro) 3208has_cctx (Coro::State coro)
1971 PROTOTYPE: $ 3209 PROTOTYPE: $
1972 CODE: 3210 CODE:
1973 RETVAL = boolSV (!!coro->cctx); 3211 /* maybe manage the running flag differently */
3212 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1974 OUTPUT: 3213 OUTPUT:
1975 RETVAL 3214 RETVAL
1976 3215
1977int 3216int
1978is_traced (Coro::State coro) 3217is_traced (Coro::State coro)
… …
1980 CODE: 3219 CODE:
1981 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3220 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1982 OUTPUT: 3221 OUTPUT:
1983 RETVAL 3222 RETVAL
1984 3223
1985IV 3224UV
1986rss (Coro::State coro) 3225rss (Coro::State coro)
1987 PROTOTYPE: $ 3226 PROTOTYPE: $
1988 ALIAS: 3227 ALIAS:
1989 usecount = 1 3228 usecount = 1
1990 CODE: 3229 CODE:
… …
1996 OUTPUT: 3235 OUTPUT:
1997 RETVAL 3236 RETVAL
1998 3237
1999void 3238void
2000force_cctx () 3239force_cctx ()
3240 PROTOTYPE:
2001 CODE: 3241 CODE:
2002 struct coro *coro = SvSTATE (coro_current);
2003 coro->cctx->idle_sp = 0; 3242 cctx_current->idle_sp = 0;
2004
2005void
2006throw (Coro::State self, SV *throw = &PL_sv_undef)
2007 PROTOTYPE: $;$
2008 CODE:
2009 SvREFCNT_dec (self->throw);
2010 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2011 3243
2012void 3244void
2013swap_defsv (Coro::State self) 3245swap_defsv (Coro::State self)
2014 PROTOTYPE: $ 3246 PROTOTYPE: $
2015 ALIAS: 3247 ALIAS:
2016 swap_defav = 1 3248 swap_defav = 1
2017 CODE: 3249 CODE:
2018 if (!self->slot) 3250 if (!self->slot)
2019 croak ("cannot swap state with coroutine that has no saved state"); 3251 croak ("cannot swap state with coroutine that has no saved state,");
2020 else 3252 else
2021 { 3253 {
2022 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3254 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2023 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3255 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2024 3256
2025 SV *tmp = *src; *src = *dst; *dst = tmp; 3257 SV *tmp = *src; *src = *dst; *dst = tmp;
2026 } 3258 }
2027 3259
3260void
3261cancel (Coro::State self)
3262 CODE:
3263 coro_state_destroy (aTHX_ self);
3264 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3265
3266
2028MODULE = Coro::State PACKAGE = Coro 3267MODULE = Coro::State PACKAGE = Coro
2029 3268
2030BOOT: 3269BOOT:
2031{ 3270{
2032 int i;
2033
2034 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2035 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3271 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2036 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3272 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2037 3273 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3274 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2038 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3275 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2039 SvREADONLY_on (coro_current); 3276 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3277 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3278 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3279 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3280
3281 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3282 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3283 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3284 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2040 3285
2041 coro_stash = gv_stashpv ("Coro", TRUE); 3286 coro_stash = gv_stashpv ("Coro", TRUE);
2042 3287
2043 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3288 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2044 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3289 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2045 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3290 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2046 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3291 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2047 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3292 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2048 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3293 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2049
2050 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2051 coro_ready[i] = newAV ();
2052 3294
2053 { 3295 {
2054 SV *sv = perl_get_sv ("Coro::API", TRUE); 3296 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2055 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2056 3297
2057 coroapi.schedule = api_schedule; 3298 coroapi.schedule = api_schedule;
3299 coroapi.schedule_to = api_schedule_to;
2058 coroapi.cede = api_cede; 3300 coroapi.cede = api_cede;
2059 coroapi.cede_notself = api_cede_notself; 3301 coroapi.cede_notself = api_cede_notself;
2060 coroapi.ready = api_ready; 3302 coroapi.ready = api_ready;
2061 coroapi.is_ready = api_is_ready; 3303 coroapi.is_ready = api_is_ready;
2062 coroapi.nready = &coro_nready; 3304 coroapi.nready = coro_nready;
2063 coroapi.current = coro_current; 3305 coroapi.current = coro_current;
2064 3306
2065 GCoroAPI = &coroapi; 3307 /*GCoroAPI = &coroapi;*/
2066 sv_setiv (sv, (IV)&coroapi); 3308 sv_setiv (sv, (IV)&coroapi);
2067 SvREADONLY_on (sv); 3309 SvREADONLY_on (sv);
2068 } 3310 }
2069} 3311}
3312
3313void
3314terminate (...)
3315 CODE:
3316 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3317
3318void
3319schedule (...)
3320 CODE:
3321 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3322
3323void
3324schedule_to (...)
3325 CODE:
3326 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3327
3328void
3329cede_to (...)
3330 CODE:
3331 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3332
3333void
3334cede (...)
3335 CODE:
3336 CORO_EXECUTE_SLF_XS (slf_init_cede);
3337
3338void
3339cede_notself (...)
3340 CODE:
3341 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2070 3342
2071void 3343void
2072_set_current (SV *current) 3344_set_current (SV *current)
2073 PROTOTYPE: $ 3345 PROTOTYPE: $
2074 CODE: 3346 CODE:
2075 SvREFCNT_dec (SvRV (coro_current)); 3347 SvREFCNT_dec (SvRV (coro_current));
2076 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3348 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2077 3349
2078void 3350void
2079_set_readyhook (SV *hook) 3351_set_readyhook (SV *hook)
2080 PROTOTYPE: $ 3352 PROTOTYPE: $
2081 CODE: 3353 CODE:
2082 LOCK;
2083 SvREFCNT_dec (coro_readyhook); 3354 SvREFCNT_dec (coro_readyhook);
3355 SvGETMAGIC (hook);
2084 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3356 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2085 UNLOCK;
2086 3357
2087int 3358int
2088prio (Coro::State coro, int newprio = 0) 3359prio (Coro::State coro, int newprio = 0)
3360 PROTOTYPE: $;$
2089 ALIAS: 3361 ALIAS:
2090 nice = 1 3362 nice = 1
2091 CODE: 3363 CODE:
2092{ 3364{
2093 RETVAL = coro->prio; 3365 RETVAL = coro->prio;
… …
2108 3380
2109SV * 3381SV *
2110ready (SV *self) 3382ready (SV *self)
2111 PROTOTYPE: $ 3383 PROTOTYPE: $
2112 CODE: 3384 CODE:
2113 RETVAL = boolSV (api_ready (self)); 3385 RETVAL = boolSV (api_ready (aTHX_ self));
2114 OUTPUT: 3386 OUTPUT:
2115 RETVAL 3387 RETVAL
2116 3388
2117int 3389int
2118nready (...) 3390nready (...)
… …
2120 CODE: 3392 CODE:
2121 RETVAL = coro_nready; 3393 RETVAL = coro_nready;
2122 OUTPUT: 3394 OUTPUT:
2123 RETVAL 3395 RETVAL
2124 3396
2125# for async_pool speedup
2126void 3397void
2127_pool_1 (SV *cb) 3398suspend (Coro::State self)
3399 PROTOTYPE: $
2128 CODE: 3400 CODE:
2129{ 3401 self->flags |= CF_SUSPENDED;
2130 struct coro *coro = SvSTATE (coro_current);
2131 HV *hv = (HV *)SvRV (coro_current);
2132 AV *defav = GvAV (PL_defgv);
2133 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2134 AV *invoke_av;
2135 int i, len;
2136 3402
2137 if (!invoke) 3403void
3404resume (Coro::State self)
3405 PROTOTYPE: $
3406 CODE:
3407 self->flags &= ~CF_SUSPENDED;
3408
3409void
3410_pool_handler (...)
3411 CODE:
3412 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3413
3414void
3415async_pool (SV *cv, ...)
3416 PROTOTYPE: &@
3417 PPCODE:
3418{
3419 HV *hv = (HV *)av_pop (av_async_pool);
3420 AV *av = newAV ();
3421 SV *cb = ST (0);
3422 int i;
3423
3424 av_extend (av, items - 2);
3425 for (i = 1; i < items; ++i)
3426 av_push (av, SvREFCNT_inc_NN (ST (i)));
3427
3428 if ((SV *)hv == &PL_sv_undef)
2138 { 3429 {
2139 SV *old = PL_diehook; 3430 PUSHMARK (SP);
2140 PL_diehook = 0; 3431 EXTEND (SP, 2);
2141 SvREFCNT_dec (old); 3432 PUSHs (sv_Coro);
2142 croak ("\3async_pool terminate\2\n"); 3433 PUSHs ((SV *)cv_pool_handler);
3434 PUTBACK;
3435 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3436 SPAGAIN;
3437
3438 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2143 } 3439 }
2144 3440
2145 SvREFCNT_dec (coro->saved_deffh);
2146 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2147
2148 hv_store (hv, "desc", sizeof ("desc") - 1,
2149 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2150
2151 invoke_av = (AV *)SvRV (invoke);
2152 len = av_len (invoke_av);
2153
2154 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2155
2156 if (len > 0)
2157 { 3441 {
2158 av_fill (defav, len - 1); 3442 struct coro *coro = SvSTATE_hv (hv);
2159 for (i = 0; i < len; ++i) 3443
2160 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3444 assert (!coro->invoke_cb);
3445 assert (!coro->invoke_av);
3446 coro->invoke_cb = SvREFCNT_inc (cb);
3447 coro->invoke_av = av;
2161 } 3448 }
2162 3449
3450 api_ready (aTHX_ (SV *)hv);
3451
3452 if (GIMME_V != G_VOID)
3453 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3454 else
2163 SvREFCNT_dec (invoke); 3455 SvREFCNT_dec (hv);
2164} 3456}
2165 3457
2166void 3458SV *
2167_pool_2 (SV *cb) 3459rouse_cb ()
3460 PROTOTYPE:
2168 CODE: 3461 CODE:
2169{ 3462 RETVAL = coro_new_rouse_cb (aTHX);
2170 struct coro *coro = SvSTATE (coro_current);
2171
2172 sv_setsv (cb, &PL_sv_undef);
2173
2174 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2175 coro->saved_deffh = 0;
2176
2177 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2178 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2179 {
2180 SV *old = PL_diehook;
2181 PL_diehook = 0;
2182 SvREFCNT_dec (old);
2183 croak ("\3async_pool terminate\2\n");
2184 }
2185
2186 av_clear (GvAV (PL_defgv));
2187 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2188 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2189
2190 coro->prio = 0;
2191
2192 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2193 api_trace (coro_current, 0);
2194
2195 av_push (av_async_pool, newSVsv (coro_current));
2196}
2197
2198#if 0
2199
2200void
2201_generator_call (...)
2202 PROTOTYPE: @
2203 PPCODE:
2204 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2205 xxxx
2206 abort ();
2207
2208SV *
2209gensub (SV *sub, ...)
2210 PROTOTYPE: &;@
2211 CODE:
2212{
2213 struct coro *coro;
2214 MAGIC *mg;
2215 CV *xcv;
2216 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2217 int i;
2218
2219 CvGV (ncv) = CvGV (cv);
2220 CvFILE (ncv) = CvFILE (cv);
2221
2222 Newz (0, coro, 1, struct coro);
2223 coro->args = newAV ();
2224 coro->flags = CF_NEW;
2225
2226 av_extend (coro->args, items - 1);
2227 for (i = 1; i < items; i++)
2228 av_push (coro->args, newSVsv (ST (i)));
2229
2230 CvISXSUB_on (ncv);
2231 CvXSUBANY (ncv).any_ptr = (void *)coro;
2232
2233 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2234
2235 CvXSUB (ncv) = CvXSUB (xcv);
2236 CvANON_on (ncv);
2237
2238 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2239 RETVAL = newRV_noinc ((SV *)ncv);
2240}
2241 OUTPUT: 3463 OUTPUT:
2242 RETVAL 3464 RETVAL
2243 3465
2244#endif 3466void
3467rouse_wait (...)
3468 PROTOTYPE: ;$
3469 PPCODE:
3470 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2245 3471
3472void
3473on_enter (SV *block)
3474 ALIAS:
3475 on_leave = 1
3476 PROTOTYPE: &
3477 CODE:
3478{
3479 struct coro *coro = SvSTATE_current;
3480 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2246 3481
3482 block = (SV *)coro_sv_2cv (aTHX_ block);
3483
3484 if (!*avp)
3485 *avp = newAV ();
3486
3487 av_push (*avp, SvREFCNT_inc (block));
3488
3489 if (!ix)
3490 on_enterleave_call (aTHX_ block);
3491
3492 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3493 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3494 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3495}
3496
3497
3498MODULE = Coro::State PACKAGE = PerlIO::cede
3499
3500BOOT:
3501 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3502
3503
2247MODULE = Coro::State PACKAGE = Coro::AIO 3504MODULE = Coro::State PACKAGE = Coro::Semaphore
2248 3505
2249SV * 3506SV *
2250_get_state () 3507new (SV *klass, SV *count = 0)
2251 CODE: 3508 CODE:
2252{ 3509{
2253 struct io_state *data; 3510 int semcnt = 1;
2254 3511
2255 RETVAL = newSV (sizeof (struct io_state)); 3512 if (count)
2256 data = (struct io_state *)SvPVX (RETVAL); 3513 {
2257 SvCUR_set (RETVAL, sizeof (struct io_state)); 3514 SvGETMAGIC (count);
2258 SvPOK_only (RETVAL);
2259 3515
2260 data->errorno = errno; 3516 if (SvOK (count))
2261 data->laststype = PL_laststype; 3517 semcnt = SvIV (count);
2262 data->laststatval = PL_laststatval; 3518 }
2263 data->statcache = PL_statcache; 3519
3520 RETVAL = sv_bless (
3521 coro_waitarray_new (aTHX_ semcnt),
3522 GvSTASH (CvGV (cv))
3523 );
2264} 3524}
2265 OUTPUT: 3525 OUTPUT:
2266 RETVAL 3526 RETVAL
2267 3527
3528# helper for Coro::Channel and others
3529SV *
3530_alloc (int count)
3531 CODE:
3532 RETVAL = coro_waitarray_new (aTHX_ count);
3533 OUTPUT:
3534 RETVAL
3535
3536SV *
3537count (SV *self)
3538 CODE:
3539 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3540 OUTPUT:
3541 RETVAL
3542
2268void 3543void
2269_set_state (char *data_) 3544up (SV *self, int adjust = 1)
2270 PROTOTYPE: $ 3545 ALIAS:
3546 adjust = 1
3547 CODE:
3548 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3549
3550void
3551down (...)
3552 CODE:
3553 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3554
3555void
3556wait (...)
3557 CODE:
3558 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3559
3560void
3561try (SV *self)
3562 PPCODE:
3563{
3564 AV *av = (AV *)SvRV (self);
3565 SV *count_sv = AvARRAY (av)[0];
3566 IV count = SvIVX (count_sv);
3567
3568 if (count > 0)
3569 {
3570 --count;
3571 SvIVX (count_sv) = count;
3572 XSRETURN_YES;
3573 }
3574 else
3575 XSRETURN_NO;
3576}
3577
3578void
3579waiters (SV *self)
3580 PPCODE:
3581{
3582 AV *av = (AV *)SvRV (self);
3583 int wcount = AvFILLp (av) + 1 - 1;
3584
3585 if (GIMME_V == G_SCALAR)
3586 XPUSHs (sv_2mortal (newSViv (wcount)));
3587 else
3588 {
3589 int i;
3590 EXTEND (SP, wcount);
3591 for (i = 1; i <= wcount; ++i)
3592 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3593 }
3594}
3595
3596MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3597
3598void
3599_may_delete (SV *sem, int count, int extra_refs)
3600 PPCODE:
3601{
3602 AV *av = (AV *)SvRV (sem);
3603
3604 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3605 && AvFILLp (av) == 0 /* no waiters, just count */
3606 && SvIV (AvARRAY (av)[0]) == count)
3607 XSRETURN_YES;
3608
3609 XSRETURN_NO;
3610}
3611
3612MODULE = Coro::State PACKAGE = Coro::Signal
3613
3614SV *
3615new (SV *klass)
2271 CODE: 3616 CODE:
2272{ 3617 RETVAL = sv_bless (
2273 struct io_state *data = (void *)data_; 3618 coro_waitarray_new (aTHX_ 0),
3619 GvSTASH (CvGV (cv))
3620 );
3621 OUTPUT:
3622 RETVAL
2274 3623
2275 errno = data->errorno; 3624void
2276 PL_laststype = data->laststype; 3625wait (...)
2277 PL_laststatval = data->laststatval; 3626 CODE:
2278 PL_statcache = data->statcache; 3627 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3628
3629void
3630broadcast (SV *self)
3631 CODE:
3632{
3633 AV *av = (AV *)SvRV (self);
3634 coro_signal_wake (aTHX_ av, AvFILLp (av));
2279} 3635}
3636
3637void
3638send (SV *self)
3639 CODE:
3640{
3641 AV *av = (AV *)SvRV (self);
3642
3643 if (AvFILLp (av))
3644 coro_signal_wake (aTHX_ av, 1);
3645 else
3646 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3647}
3648
3649IV
3650awaited (SV *self)
3651 CODE:
3652 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3653 OUTPUT:
3654 RETVAL
2280 3655
2281 3656
2282MODULE = Coro::State PACKAGE = Coro::AnyEvent 3657MODULE = Coro::State PACKAGE = Coro::AnyEvent
2283 3658
2284BOOT: 3659BOOT:
2285 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3660 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2286 3661
2287SV * 3662void
2288_schedule (...) 3663_schedule (...)
2289 PROTOTYPE: @
2290 CODE: 3664 CODE:
2291{ 3665{
2292 static int incede; 3666 static int incede;
2293 3667
2294 api_cede_notself (); 3668 api_cede_notself (aTHX);
2295 3669
2296 ++incede; 3670 ++incede;
2297 while (coro_nready >= incede && api_cede ()) 3671 while (coro_nready >= incede && api_cede (aTHX))
2298 ; 3672 ;
2299 3673
2300 sv_setsv (sv_activity, &PL_sv_undef); 3674 sv_setsv (sv_activity, &PL_sv_undef);
2301 if (coro_nready >= incede) 3675 if (coro_nready >= incede)
2302 { 3676 {
2303 PUSHMARK (SP); 3677 PUSHMARK (SP);
2304 PUTBACK; 3678 PUTBACK;
2305 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3679 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2306 SPAGAIN;
2307 } 3680 }
2308 3681
2309 --incede; 3682 --incede;
2310} 3683}
2311 3684
2312 3685
2313MODULE = Coro::State PACKAGE = PerlIO::cede 3686MODULE = Coro::State PACKAGE = Coro::AIO
2314 3687
2315BOOT: 3688void
2316 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3689_register (char *target, char *proto, SV *req)
3690 CODE:
3691{
3692 CV *req_cv = coro_sv_2cv (aTHX_ req);
3693 /* newXSproto doesn't return the CV on 5.8 */
3694 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3695 sv_setpv ((SV *)slf_cv, proto);
3696 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3697}
3698

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