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Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.371 by root, Sat Aug 22 22:36:23 2009 UTC

… …
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h" 9#include "perliol.h"
10 10
11#include "patchlevel.h" 11#include "schmorp.h"
12 12
13#include <stdio.h> 13#include <stdio.h>
14#include <errno.h> 14#include <errno.h>
15#include <assert.h> 15#include <assert.h>
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
… …
51#endif 51#endif
52 52
53/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
108#endif 58#endif
109 59
110#ifndef CORO_STACKGUARD 60#ifndef CORO_STACKGUARD
… …
117#endif 67#endif
118 68
119/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 70 * portable way as possible. */
121#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
123#else 74#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
125#endif 77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128 80
129#if __GNUC__ >= 3 81#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 84# define INLINE static inline
133#else 85#else
134# define attribute(x) 86# define attribute(x)
135# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
136# define INLINE static 88# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
141 93
142#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
143 95
144#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
145 98
146#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 100# if CORO_PTHREAD
152static void *coro_thx; 101static void *coro_thx;
153# endif 102# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 103#endif
161 104
162# undef LOCK 105#ifdef __linux
163# define LOCK (void)0 106# include <time.h> /* for timespec */
164# undef UNLOCK 107# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 108# ifdef SYS_clock_gettime
166 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 110# define CORO_CLOCK_MONOTONIC 1
168struct io_state 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 112# endif
170 AV *res; 113#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 114
177static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
178 121
179static U32 cctx_gen; 122static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 126static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
187 133
188static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 136static SV *rv_diehook;
191static SV *rv_warnhook; 137static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
193 139
194/* async_pool helper stuff */ 140/* async_pool helper stuff */
195static SV *sv_pool_rss; 141static SV *sv_pool_rss;
196static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
198 147
199/* Coro::AnyEvent */ 148/* Coro::AnyEvent */
200static SV *sv_activity; 149static SV *sv_activity;
150
151/* enable processtime/realtime profiling */
152static char enable_times;
153typedef U32 coro_ts[2];
154static coro_ts time_real, time_cpu;
155static char times_valid;
201 156
202static struct coro_cctx *cctx_first; 157static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 158static int cctx_count, cctx_idle;
204 159
205enum { 160enum {
… …
231 int valgrind_id; 186 int valgrind_id;
232#endif 187#endif
233 unsigned char flags; 188 unsigned char flags;
234} coro_cctx; 189} coro_cctx;
235 190
191coro_cctx *cctx_current; /* the currently running cctx */
192
193/*****************************************************************************/
194
236enum { 195enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 196 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 197 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 198 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
200 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
241}; 201};
242 202
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 203/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 204typedef struct
245{ 205{
246 SV *defsv; 206 SV *defsv;
247 AV *defav; 207 AV *defav;
248 SV *errsv; 208 SV *errsv;
249 SV *irsgv; 209 SV *irsgv;
210 HV *hinthv;
250#define VAR(name,type) type name; 211#define VAR(name,type) type name;
251# include "state.h" 212# include "state.h"
252#undef VAR 213#undef VAR
253} perl_slots; 214} perl_slots;
254 215
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 217
257/* this is the per-perl-coro slf frame info */
258/* it is treated like other "global" interpreter data */
259/* and unfortunately is copied around, so kepe it small */
260struct slf_frame
261{
262 void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263 int (*check) (pTHX);
264};
265
266/* this is a structure representing a perl-level coroutine */ 218/* this is a structure representing a perl-level coroutine */
267struct coro { 219struct coro {
268 /* the C coroutine allocated to this perl coroutine, if any */ 220 /* the C coroutine allocated to this perl coroutine, if any */
269 coro_cctx *cctx; 221 coro_cctx *cctx;
270 222
271 /* process data */ 223 /* ready queue */
224 struct coro *next_ready;
225
226 /* state data */
272 struct slf_frame slf_frame; /* saved slf frame */ 227 struct CoroSLF slf_frame; /* saved slf frame */
273 void *slf_data;
274 AV *mainstack; 228 AV *mainstack;
275 perl_slots *slot; /* basically the saved sp */ 229 perl_slots *slot; /* basically the saved sp */
276 230
231 CV *startcv; /* the CV to execute */
277 AV *args; /* data associated with this coroutine (initial args) */ 232 AV *args; /* data associated with this coroutine (initial args) */
278 int refcnt; /* coroutines are refcounted, yes */ 233 int refcnt; /* coroutines are refcounted, yes */
279 int flags; /* CF_ flags */ 234 int flags; /* CF_ flags */
280 HV *hv; /* the perl hash associated with this coro, if any */ 235 HV *hv; /* the perl hash associated with this coro, if any */
236 void (*on_destroy)(pTHX_ struct coro *coro);
281 237
282 /* statistics */ 238 /* statistics */
283 int usecount; /* number of transfers to this coro */ 239 int usecount; /* number of transfers to this coro */
284 240
285 /* coro process data */ 241 /* coro process data */
286 int prio; 242 int prio;
287 SV *throw; /* exception to be thrown */ 243 SV *except; /* exception to be thrown */
244 SV *rouse_cb;
288 245
289 /* async_pool */ 246 /* async_pool */
290 SV *saved_deffh; 247 SV *saved_deffh;
248 SV *invoke_cb;
249 AV *invoke_av;
250
251 /* on_enter/on_leave */
252 AV *on_enter;
253 AV *on_leave;
254
255 /* times */
256 coro_ts t_cpu, t_real;
291 257
292 /* linked list */ 258 /* linked list */
293 struct coro *next, *prev; 259 struct coro *next, *prev;
294}; 260};
295 261
296typedef struct coro *Coro__State; 262typedef struct coro *Coro__State;
297typedef struct coro *Coro__State_or_hashref; 263typedef struct coro *Coro__State_or_hashref;
298 264
265/* the following variables are effectively part of the perl context */
266/* and get copied between struct coro and these variables */
267/* the mainr easonw e don't support windows process emulation */
299static struct slf_frame slf_frame; /* the current slf frame */ 268static struct CoroSLF slf_frame; /* the current slf frame */
300 269
301/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
302 271
303#define PRIO_MAX 3 272#define CORO_PRIO_MAX 3
304#define PRIO_HIGH 1 273#define CORO_PRIO_HIGH 1
305#define PRIO_NORMAL 0 274#define CORO_PRIO_NORMAL 0
306#define PRIO_LOW -1 275#define CORO_PRIO_LOW -1
307#define PRIO_IDLE -3 276#define CORO_PRIO_IDLE -3
308#define PRIO_MIN -4 277#define CORO_PRIO_MIN -4
309 278
310/* for Coro.pm */ 279/* for Coro.pm */
311static SV *coro_current; 280static SV *coro_current;
312static SV *coro_readyhook; 281static SV *coro_readyhook;
313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 282static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
283static CV *cv_coro_run, *cv_coro_terminate;
314static struct coro *coro_first; 284static struct coro *coro_first;
315#define coro_nready coroapi.nready 285#define coro_nready coroapi.nready
286
287/** Coro::Select ************************************************************/
288
289static OP *(*coro_old_pp_sselect) (pTHX);
290static SV *coro_select_select;
291
292/* horrible hack, but if it works... */
293static OP *
294coro_pp_sselect (pTHX)
295{
296 dSP;
297 PUSHMARK (SP - 4); /* fake argument list */
298 XPUSHs (coro_select_select);
299 PUTBACK;
300
301 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
302 PL_op->op_flags |= OPf_STACKED;
303 PL_op->op_private = 0;
304 return PL_ppaddr [OP_ENTERSUB](aTHX);
305}
316 306
317/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
318 308
319static SV * 309static SV *
320coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
344 get_hv (name, create); 334 get_hv (name, create);
345#endif 335#endif
346 return get_hv (name, create); 336 return get_hv (name, create);
347} 337}
348 338
339INLINE void
340coro_times_update ()
341{
342#ifdef coro_clock_gettime
343 struct timespec ts;
344
345 ts.tv_sec = ts.tv_nsec = 0;
346 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
347 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
348
349 ts.tv_sec = ts.tv_nsec = 0;
350 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
351 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
352#else
353 dTHX;
354 UV tv[2];
355
356 u2time (aTHX_ tv);
357 time_real [0] = tv [0];
358 time_real [1] = tv [1] * 1000;
359#endif
360}
361
362INLINE void
363coro_times_add (struct coro *c)
364{
365 c->t_real [1] += time_real [1];
366 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
367 c->t_real [0] += time_real [0];
368
369 c->t_cpu [1] += time_cpu [1];
370 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
371 c->t_cpu [0] += time_cpu [0];
372}
373
374INLINE void
375coro_times_sub (struct coro *c)
376{
377 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
378 c->t_real [1] -= time_real [1];
379 c->t_real [0] -= time_real [0];
380
381 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
382 c->t_cpu [1] -= time_cpu [1];
383 c->t_cpu [0] -= time_cpu [0];
384}
385
386/*****************************************************************************/
387/* magic glue */
388
389#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391
392#define CORO_MAGIC_NN(sv, type) \
393 (expect_true (SvMAGIC (sv)->mg_type == type) \
394 ? SvMAGIC (sv) \
395 : mg_find (sv, type))
396
397#define CORO_MAGIC(sv, type) \
398 (expect_true (SvMAGIC (sv)) \
399 ? CORO_MAGIC_NN (sv, type) \
400 : 0)
401
402#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
403#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
404
405INLINE struct coro *
406SvSTATE_ (pTHX_ SV *coro)
407{
408 HV *stash;
409 MAGIC *mg;
410
411 if (SvROK (coro))
412 coro = SvRV (coro);
413
414 if (expect_false (SvTYPE (coro) != SVt_PVHV))
415 croak ("Coro::State object required");
416
417 stash = SvSTASH (coro);
418 if (expect_false (stash != coro_stash && stash != coro_state_stash))
419 {
420 /* very slow, but rare, check */
421 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
422 croak ("Coro::State object required");
423 }
424
425 mg = CORO_MAGIC_state (coro);
426 return (struct coro *)mg->mg_ptr;
427}
428
429#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
430
431/* faster than SvSTATE, but expects a coroutine hv */
432#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
433#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
434
435/*****************************************************************************/
436/* padlist management and caching */
437
349static AV * 438static AV *
350coro_clone_padlist (pTHX_ CV *cv) 439coro_derive_padlist (pTHX_ CV *cv)
351{ 440{
352 AV *padlist = CvPADLIST (cv); 441 AV *padlist = CvPADLIST (cv);
353 AV *newpadlist, *newpad; 442 AV *newpadlist, *newpad;
354 443
355 newpadlist = newAV (); 444 newpadlist = newAV ();
… …
360 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 449 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
361#endif 450#endif
362 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 451 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
363 --AvFILLp (padlist); 452 --AvFILLp (padlist);
364 453
365 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 454 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
366 av_store (newpadlist, 1, (SV *)newpad); 455 av_store (newpadlist, 1, (SV *)newpad);
367 456
368 return newpadlist; 457 return newpadlist;
369} 458}
370 459
371static void 460static void
372free_padlist (pTHX_ AV *padlist) 461free_padlist (pTHX_ AV *padlist)
373{ 462{
374 /* may be during global destruction */ 463 /* may be during global destruction */
375 if (SvREFCNT (padlist)) 464 if (!IN_DESTRUCT)
376 { 465 {
377 I32 i = AvFILLp (padlist); 466 I32 i = AvFILLp (padlist);
378 while (i >= 0) 467
468 while (i > 0) /* special-case index 0 */
379 { 469 {
380 SV **svp = av_fetch (padlist, i--, FALSE); 470 /* we try to be extra-careful here */
381 if (svp) 471 AV *av = (AV *)AvARRAY (padlist)[i--];
382 { 472 I32 j = AvFILLp (av);
383 SV *sv; 473
384 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 474 while (j >= 0)
475 SvREFCNT_dec (AvARRAY (av)[j--]);
476
477 AvFILLp (av) = -1;
385 SvREFCNT_dec (sv); 478 SvREFCNT_dec (av);
386
387 SvREFCNT_dec (*svp);
388 }
389 } 479 }
390 480
481 SvREFCNT_dec (AvARRAY (padlist)[0]);
482
483 AvFILLp (padlist) = -1;
391 SvREFCNT_dec ((SV*)padlist); 484 SvREFCNT_dec ((SV*)padlist);
392 } 485 }
393} 486}
394 487
395static int 488static int
396coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 489coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
397{ 490{
398 AV *padlist; 491 AV *padlist;
399 AV *av = (AV *)mg->mg_obj; 492 AV *av = (AV *)mg->mg_obj;
493
494 /* perl manages to free our internal AV and _then_ call us */
495 if (IN_DESTRUCT)
496 return 0;
400 497
401 /* casting is fun. */ 498 /* casting is fun. */
402 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 499 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
403 free_padlist (aTHX_ padlist); 500 free_padlist (aTHX_ padlist);
404 501
405 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 502 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406 503
407 return 0; 504 return 0;
408} 505}
409
410#define CORO_MAGIC_type_cv PERL_MAGIC_ext
411#define CORO_MAGIC_type_state PERL_MAGIC_ext
412 506
413static MGVTBL coro_cv_vtbl = { 507static MGVTBL coro_cv_vtbl = {
414 0, 0, 0, 0, 508 0, 0, 0, 0,
415 coro_cv_free 509 coro_cv_free
416}; 510};
417
418#define CORO_MAGIC(sv, type) \
419 SvMAGIC (sv) \
420 ? SvMAGIC (sv)->mg_type == type \
421 ? SvMAGIC (sv) \
422 : mg_find (sv, type) \
423 : 0
424
425#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
427
428INLINE struct coro *
429SvSTATE_ (pTHX_ SV *coro)
430{
431 HV *stash;
432 MAGIC *mg;
433
434 if (SvROK (coro))
435 coro = SvRV (coro);
436
437 if (expect_false (SvTYPE (coro) != SVt_PVHV))
438 croak ("Coro::State object required");
439
440 stash = SvSTASH (coro);
441 if (expect_false (stash != coro_stash && stash != coro_state_stash))
442 {
443 /* very slow, but rare, check */
444 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
445 croak ("Coro::State object required");
446 }
447
448 mg = CORO_MAGIC_state (coro);
449 return (struct coro *)mg->mg_ptr;
450}
451
452#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
453 511
454/* the next two functions merely cache the padlists */ 512/* the next two functions merely cache the padlists */
455static void 513static void
456get_padlist (pTHX_ CV *cv) 514get_padlist (pTHX_ CV *cv)
457{ 515{
… …
463 else 521 else
464 { 522 {
465#if CORO_PREFER_PERL_FUNCTIONS 523#if CORO_PREFER_PERL_FUNCTIONS
466 /* this is probably cleaner? but also slower! */ 524 /* this is probably cleaner? but also slower! */
467 /* in practise, it seems to be less stable */ 525 /* in practise, it seems to be less stable */
468 CV *cp = Perl_cv_clone (cv); 526 CV *cp = Perl_cv_clone (aTHX_ cv);
469 CvPADLIST (cv) = CvPADLIST (cp); 527 CvPADLIST (cv) = CvPADLIST (cp);
470 CvPADLIST (cp) = 0; 528 CvPADLIST (cp) = 0;
471 SvREFCNT_dec (cp); 529 SvREFCNT_dec (cp);
472#else 530#else
473 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 531 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
474#endif 532#endif
475 } 533 }
476} 534}
477 535
478static void 536static void
… …
485 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 543 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
486 544
487 av = (AV *)mg->mg_obj; 545 av = (AV *)mg->mg_obj;
488 546
489 if (expect_false (AvFILLp (av) >= AvMAX (av))) 547 if (expect_false (AvFILLp (av) >= AvMAX (av)))
490 av_extend (av, AvMAX (av) + 1); 548 av_extend (av, AvFILLp (av) + 1);
491 549
492 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 550 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
493} 551}
494 552
495/** load & save, init *******************************************************/ 553/** load & save, init *******************************************************/
554
555static void
556on_enterleave_call (pTHX_ SV *cb);
496 557
497static void 558static void
498load_perl (pTHX_ Coro__State c) 559load_perl (pTHX_ Coro__State c)
499{ 560{
500 perl_slots *slot = c->slot; 561 perl_slots *slot = c->slot;
501 c->slot = 0; 562 c->slot = 0;
502 563
503 PL_mainstack = c->mainstack; 564 PL_mainstack = c->mainstack;
504 565
505 GvSV (PL_defgv) = slot->defsv; 566 GvSV (PL_defgv) = slot->defsv;
506 GvAV (PL_defgv) = slot->defav; 567 GvAV (PL_defgv) = slot->defav;
507 GvSV (PL_errgv) = slot->errsv; 568 GvSV (PL_errgv) = slot->errsv;
508 GvSV (irsgv) = slot->irsgv; 569 GvSV (irsgv) = slot->irsgv;
570 GvHV (PL_hintgv) = slot->hinthv;
509 571
510 #define VAR(name,type) PL_ ## name = slot->name; 572 #define VAR(name,type) PL_ ## name = slot->name;
511 # include "state.h" 573 # include "state.h"
512 #undef VAR 574 #undef VAR
513 575
… …
525 } 587 }
526 588
527 PUTBACK; 589 PUTBACK;
528 } 590 }
529 591
530 slf_frame = c->slf_frame; 592 slf_frame = c->slf_frame;
531 coroapi.slf_data = c->slf_data; 593 CORO_THROW = c->except;
594
595 if (expect_false (enable_times))
596 {
597 if (expect_false (!times_valid))
598 coro_times_update ();
599
600 coro_times_sub (c);
601 }
602
603 if (expect_false (c->on_enter))
604 {
605 int i;
606
607 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
608 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
609 }
532} 610}
533 611
534static void 612static void
535save_perl (pTHX_ Coro__State c) 613save_perl (pTHX_ Coro__State c)
536{ 614{
537 c->slf_data = coroapi.slf_data; 615 if (expect_false (c->on_leave))
616 {
617 int i;
618
619 for (i = AvFILLp (c->on_leave); i >= 0; --i)
620 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
621 }
622
623 times_valid = 0;
624
625 if (expect_false (enable_times))
626 {
627 coro_times_update (); times_valid = 1;
628 coro_times_add (c);
629 }
630
631 c->except = CORO_THROW;
538 c->slf_frame = slf_frame; 632 c->slf_frame = slf_frame;
539 633
540 { 634 {
541 dSP; 635 dSP;
542 I32 cxix = cxstack_ix; 636 I32 cxix = cxstack_ix;
… …
554 { 648 {
555 while (expect_true (cxix >= 0)) 649 while (expect_true (cxix >= 0))
556 { 650 {
557 PERL_CONTEXT *cx = &ccstk[cxix--]; 651 PERL_CONTEXT *cx = &ccstk[cxix--];
558 652
559 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 653 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
560 { 654 {
561 CV *cv = cx->blk_sub.cv; 655 CV *cv = cx->blk_sub.cv;
562 656
563 if (expect_true (CvDEPTH (cv))) 657 if (expect_true (CvDEPTH (cv)))
564 { 658 {
… …
588 /* we manually unroll here, as usually 2 slots is enough */ 682 /* we manually unroll here, as usually 2 slots is enough */
589 if (SLOT_COUNT >= 1) CXINC; 683 if (SLOT_COUNT >= 1) CXINC;
590 if (SLOT_COUNT >= 2) CXINC; 684 if (SLOT_COUNT >= 2) CXINC;
591 if (SLOT_COUNT >= 3) CXINC; 685 if (SLOT_COUNT >= 3) CXINC;
592 { 686 {
593 int i; 687 unsigned int i;
594 for (i = 3; i < SLOT_COUNT; ++i) 688 for (i = 3; i < SLOT_COUNT; ++i)
595 CXINC; 689 CXINC;
596 } 690 }
597 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 691 cxstack_ix -= SLOT_COUNT; /* undo allocation */
598 692
599 c->mainstack = PL_mainstack; 693 c->mainstack = PL_mainstack;
600 694
601 { 695 {
602 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 696 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
603 697
604 slot->defav = GvAV (PL_defgv); 698 slot->defav = GvAV (PL_defgv);
605 slot->defsv = DEFSV; 699 slot->defsv = DEFSV;
606 slot->errsv = ERRSV; 700 slot->errsv = ERRSV;
607 slot->irsgv = GvSV (irsgv); 701 slot->irsgv = GvSV (irsgv);
702 slot->hinthv = GvHV (PL_hintgv);
608 703
609 #define VAR(name,type) slot->name = PL_ ## name; 704 #define VAR(name,type) slot->name = PL_ ## name;
610 # include "state.h" 705 # include "state.h"
611 #undef VAR 706 #undef VAR
612 } 707 }
… …
617 * of perl.c:init_stacks, except that it uses less memory 712 * of perl.c:init_stacks, except that it uses less memory
618 * on the (sometimes correct) assumption that coroutines do 713 * on the (sometimes correct) assumption that coroutines do
619 * not usually need a lot of stackspace. 714 * not usually need a lot of stackspace.
620 */ 715 */
621#if CORO_PREFER_PERL_FUNCTIONS 716#if CORO_PREFER_PERL_FUNCTIONS
622# define coro_init_stacks init_stacks 717# define coro_init_stacks(thx) init_stacks ()
623#else 718#else
624static void 719static void
625coro_init_stacks (pTHX) 720coro_init_stacks (pTHX)
626{ 721{
627 PL_curstackinfo = new_stackinfo(32, 8); 722 PL_curstackinfo = new_stackinfo(32, 8);
… …
690#if !PERL_VERSION_ATLEAST (5,10,0) 785#if !PERL_VERSION_ATLEAST (5,10,0)
691 Safefree (PL_retstack); 786 Safefree (PL_retstack);
692#endif 787#endif
693} 788}
694 789
790#define CORO_RSS \
791 rss += sizeof (SYM (curstackinfo)); \
792 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
793 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
794 rss += SYM (tmps_max) * sizeof (SV *); \
795 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
796 rss += SYM (scopestack_max) * sizeof (I32); \
797 rss += SYM (savestack_max) * sizeof (ANY);
798
695static size_t 799static size_t
696coro_rss (pTHX_ struct coro *coro) 800coro_rss (pTHX_ struct coro *coro)
697{ 801{
698 size_t rss = sizeof (*coro); 802 size_t rss = sizeof (*coro);
699 803
700 if (coro->mainstack) 804 if (coro->mainstack)
701 { 805 {
702 perl_slots tmp_slot;
703 perl_slots *slot;
704
705 if (coro->flags & CF_RUNNING) 806 if (coro->flags & CF_RUNNING)
706 { 807 {
707 slot = &tmp_slot; 808 #define SYM(sym) PL_ ## sym
708 809 CORO_RSS;
709 #define VAR(name,type) slot->name = PL_ ## name;
710 # include "state.h"
711 #undef VAR 810 #undef SYM
712 } 811 }
713 else 812 else
714 slot = coro->slot;
715
716 if (slot)
717 { 813 {
718 rss += sizeof (slot->curstackinfo); 814 #define SYM(sym) coro->slot->sym
719 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 815 CORO_RSS;
720 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 816 #undef SYM
721 rss += slot->tmps_max * sizeof (SV *);
722 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
723 rss += slot->scopestack_max * sizeof (I32);
724 rss += slot->savestack_max * sizeof (ANY);
725
726#if !PERL_VERSION_ATLEAST (5,10,0)
727 rss += slot->retstack_max * sizeof (OP *);
728#endif
729 } 817 }
730 } 818 }
731 819
732 return rss; 820 return rss;
733} 821}
… …
746#endif 834#endif
747 835
748/* 836/*
749 * This overrides the default magic get method of %SIG elements. 837 * This overrides the default magic get method of %SIG elements.
750 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 838 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
751 * and instead of tryign to save and restore the hash elements, we just provide 839 * and instead of trying to save and restore the hash elements, we just provide
752 * readback here. 840 * readback here.
753 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
754 * not expecting this to actually change the hook. This is a potential problem
755 * when a schedule happens then, but we ignore this.
756 */ 841 */
757static int 842static int
758coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 843coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
759{ 844{
760 const char *s = MgPV_nolen_const (mg); 845 const char *s = MgPV_nolen_const (mg);
… …
813 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 898 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
814 899
815 if (svp) 900 if (svp)
816 { 901 {
817 SV *old = *svp; 902 SV *old = *svp;
818 *svp = newSVsv (sv); 903 *svp = SvOK (sv) ? newSVsv (sv) : 0;
819 SvREFCNT_dec (old); 904 SvREFCNT_dec (old);
820 return 0; 905 return 0;
821 } 906 }
822 } 907 }
823 908
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 909 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 910}
826 911
827static void 912static void
828prepare_nop (aTHX_ struct coro_transfer_args *ta) 913prepare_nop (pTHX_ struct coro_transfer_args *ta)
829{ 914{
830 /* kind of mega-hacky, but works */ 915 /* kind of mega-hacky, but works */
831 ta->next = ta->prev = (struct coro *)ta; 916 ta->next = ta->prev = (struct coro *)ta;
832} 917}
833 918
834static int 919static int
835slf_check_nop (aTHX) 920slf_check_nop (pTHX_ struct CoroSLF *frame)
836{ 921{
837 return 0; 922 return 0;
838} 923}
839 924
840static void 925static int
926slf_check_repeat (pTHX_ struct CoroSLF *frame)
927{
928 return 1;
929}
930
931static UNOP coro_setup_op;
932
933static void NOINLINE /* noinline to keep it out of the transfer fast path */
841coro_setup (pTHX_ struct coro *coro) 934coro_setup (pTHX_ struct coro *coro)
842{ 935{
843 /* 936 /*
844 * emulate part of the perl startup here. 937 * emulate part of the perl startup here.
845 */ 938 */
… …
847 940
848 PL_runops = RUNOPS_DEFAULT; 941 PL_runops = RUNOPS_DEFAULT;
849 PL_curcop = &PL_compiling; 942 PL_curcop = &PL_compiling;
850 PL_in_eval = EVAL_NULL; 943 PL_in_eval = EVAL_NULL;
851 PL_comppad = 0; 944 PL_comppad = 0;
945 PL_comppad_name = 0;
946 PL_comppad_name_fill = 0;
947 PL_comppad_name_floor = 0;
852 PL_curpm = 0; 948 PL_curpm = 0;
853 PL_curpad = 0; 949 PL_curpad = 0;
854 PL_localizing = 0; 950 PL_localizing = 0;
855 PL_dirty = 0; 951 PL_dirty = 0;
856 PL_restartop = 0; 952 PL_restartop = 0;
857#if PERL_VERSION_ATLEAST (5,10,0) 953#if PERL_VERSION_ATLEAST (5,10,0)
858 PL_parser = 0; 954 PL_parser = 0;
859#endif 955#endif
956 PL_hints = 0;
860 957
861 /* recreate the die/warn hooks */ 958 /* recreate the die/warn hooks */
862 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 959 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
863 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 960 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
864 961
865 GvSV (PL_defgv) = newSV (0); 962 GvSV (PL_defgv) = newSV (0);
866 GvAV (PL_defgv) = coro->args; coro->args = 0; 963 GvAV (PL_defgv) = coro->args; coro->args = 0;
867 GvSV (PL_errgv) = newSV (0); 964 GvSV (PL_errgv) = newSV (0);
868 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 965 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
966 GvHV (PL_hintgv) = 0;
869 PL_rs = newSVsv (GvSV (irsgv)); 967 PL_rs = newSVsv (GvSV (irsgv));
870 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 968 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
871 969
872 { 970 {
873 dSP; 971 dSP;
874 UNOP myop; 972 UNOP myop;
875 973
876 Zero (&myop, 1, UNOP); 974 Zero (&myop, 1, UNOP);
877 myop.op_next = Nullop; 975 myop.op_next = Nullop;
976 myop.op_type = OP_ENTERSUB;
878 myop.op_flags = OPf_WANT_VOID; 977 myop.op_flags = OPf_WANT_VOID;
879 978
880 PUSHMARK (SP); 979 PUSHMARK (SP);
881 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 980 PUSHs ((SV *)coro->startcv);
882 PUTBACK; 981 PUTBACK;
883 PL_op = (OP *)&myop; 982 PL_op = (OP *)&myop;
884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 983 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
885 SPAGAIN;
886 } 984 }
887 985
888 /* this newly created coroutine might be run on an existing cctx which most 986 /* this newly created coroutine might be run on an existing cctx which most
889 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 987 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
890 */ 988 */
891 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 989 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
892 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 990 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
893}
894 991
992 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
993 coro_setup_op.op_next = PL_op;
994 coro_setup_op.op_type = OP_ENTERSUB;
995 coro_setup_op.op_ppaddr = pp_slf;
996 /* no flags etc. required, as an init function won't be called */
997
998 PL_op = (OP *)&coro_setup_op;
999
1000 /* copy throw, in case it was set before coro_setup */
1001 CORO_THROW = coro->except;
1002
1003 if (expect_false (enable_times))
1004 {
1005 coro_times_update ();
1006 coro_times_sub (coro);
1007 }
1008}
1009
895static void 1010static void
896coro_destruct (pTHX_ struct coro *coro) 1011coro_unwind_stacks (pTHX)
897{ 1012{
898 if (!IN_DESTRUCT) 1013 if (!IN_DESTRUCT)
899 { 1014 {
900 /* restore all saved variables and stuff */ 1015 /* restore all saved variables and stuff */
901 LEAVE_SCOPE (0); 1016 LEAVE_SCOPE (0);
… …
909 POPSTACK_TO (PL_mainstack); 1024 POPSTACK_TO (PL_mainstack);
910 1025
911 /* unwind main stack */ 1026 /* unwind main stack */
912 dounwind (-1); 1027 dounwind (-1);
913 } 1028 }
1029}
914 1030
915 SvREFCNT_dec (GvSV (PL_defgv)); 1031static void
916 SvREFCNT_dec (GvAV (PL_defgv)); 1032coro_destruct_perl (pTHX_ struct coro *coro)
917 SvREFCNT_dec (GvSV (PL_errgv)); 1033{
918 SvREFCNT_dec (PL_defoutgv); 1034 SV *svf [9];
919 SvREFCNT_dec (PL_rs);
920 SvREFCNT_dec (GvSV (irsgv));
921 1035
922 SvREFCNT_dec (PL_diehook);
923 SvREFCNT_dec (PL_warnhook);
924 1036 {
1037 struct coro *current = SvSTATE_current;
1038
1039 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1040
1041 save_perl (aTHX_ current);
1042 load_perl (aTHX_ coro);
1043
1044 coro_unwind_stacks (aTHX);
1045 coro_destruct_stacks (aTHX);
1046
1047 // now save some sv's to be free'd later
1048 svf [0] = GvSV (PL_defgv);
1049 svf [1] = (SV *)GvAV (PL_defgv);
1050 svf [2] = GvSV (PL_errgv);
1051 svf [3] = (SV *)PL_defoutgv;
1052 svf [4] = PL_rs;
1053 svf [5] = GvSV (irsgv);
1054 svf [6] = (SV *)GvHV (PL_hintgv);
1055 svf [7] = PL_diehook;
1056 svf [8] = PL_warnhook;
1057 assert (9 == sizeof (svf) / sizeof (*svf));
1058
1059 load_perl (aTHX_ current);
1060 }
1061
1062 {
1063 unsigned int i;
1064
1065 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1066 SvREFCNT_dec (svf [i]);
1067
925 SvREFCNT_dec (coro->saved_deffh); 1068 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->throw); 1069 SvREFCNT_dec (coro->rouse_cb);
927 1070 SvREFCNT_dec (coro->invoke_cb);
928 coro_destruct_stacks (aTHX); 1071 SvREFCNT_dec (coro->invoke_av);
1072 }
929} 1073}
930 1074
931INLINE void 1075INLINE void
932free_coro_mortal (pTHX) 1076free_coro_mortal (pTHX)
933{ 1077{
… …
941static int 1085static int
942runops_trace (pTHX) 1086runops_trace (pTHX)
943{ 1087{
944 COP *oldcop = 0; 1088 COP *oldcop = 0;
945 int oldcxix = -2; 1089 int oldcxix = -2;
946 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1090
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1091 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1092 {
951 PERL_ASYNC_CHECK (); 1093 PERL_ASYNC_CHECK ();
952 1094
953 if (cctx->flags & CC_TRACE_ALL) 1095 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1096 {
955 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1097 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
956 { 1098 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1099 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1100 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1101 AV *av = newAV (); /* return values */
960 SV **cb; 1102 SV **cb;
… …
997 1139
998 if (PL_curcop != &PL_compiling) 1140 if (PL_curcop != &PL_compiling)
999 { 1141 {
1000 SV **cb; 1142 SV **cb;
1001 1143
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1144 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1003 { 1145 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1146 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1147
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1148 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1149 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1150 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1151 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1152 SV *fullname = sv_2mortal (newSV (0));
1012 1153
1013 if (isGV (gv)) 1154 if (isGV (gv))
… …
1018 SAVETMPS; 1159 SAVETMPS;
1019 EXTEND (SP, 3); 1160 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1161 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1162 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1163 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1164 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1165 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1166 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1167 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1168 SPAGAIN;
1028 FREETMPS; 1169 FREETMPS;
… …
1031 } 1172 }
1032 1173
1033 oldcxix = cxstack_ix; 1174 oldcxix = cxstack_ix;
1034 } 1175 }
1035 1176
1036 if (cctx->flags & CC_TRACE_LINE) 1177 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1178 {
1038 dSP; 1179 dSP;
1039 1180
1040 PL_runops = RUNOPS_DEFAULT; 1181 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1182 ENTER;
… …
1060 1201
1061 TAINT_NOT; 1202 TAINT_NOT;
1062 return 0; 1203 return 0;
1063} 1204}
1064 1205
1206static struct CoroSLF cctx_ssl_frame;
1207
1065static void 1208static void
1066prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1209slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067{ 1210{
1068 ta->prev = (struct coro *)cctx;
1069 ta->next = 0; 1211 ta->prev = 0;
1070} 1212}
1071 1213
1072/* inject a fake call to Coro::State::_cctx_init into the execution */ 1214static int
1073/* _cctx_init should be careful, as it could be called at almost any time */ 1215slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074/* during execution of a perl program */ 1216{
1075/* also initialises PL_top_env */ 1217 *frame = cctx_ssl_frame;
1218
1219 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1220}
1221
1222/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1076static void NOINLINE 1223static void NOINLINE
1077cctx_prepare (pTHX_ coro_cctx *cctx) 1224cctx_prepare (pTHX)
1078{ 1225{
1079 dSP;
1080 UNOP myop;
1081
1082 PL_top_env = &PL_start_env; 1226 PL_top_env = &PL_start_env;
1083 1227
1084 if (cctx->flags & CC_TRACE) 1228 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1229 PL_runops = runops_trace;
1086 1230
1087 Zero (&myop, 1, UNOP); 1231 /* we already must be executing an SLF op, there is no other valid way
1088 myop.op_next = PL_op; 1232 * that can lead to creation of a new cctx */
1089 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1233 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1234 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1090 1235
1091 PUSHMARK (SP); 1236 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092 EXTEND (SP, 2); 1237 cctx_ssl_frame = slf_frame;
1093 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1238
1094 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1239 slf_frame.prepare = slf_prepare_set_stacklevel;
1095 PUTBACK; 1240 slf_frame.check = slf_check_set_stacklevel;
1096 PL_op = (OP *)&myop;
1097 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098 SPAGAIN;
1099} 1241}
1100 1242
1101/* the tail of transfer: execute stuff we can only do after a transfer */ 1243/* the tail of transfer: execute stuff we can only do after a transfer */
1102INLINE void 1244INLINE void
1103transfer_tail (pTHX) 1245transfer_tail (pTHX)
1104{ 1246{
1105 struct coro *next = (struct coro *)transfer_next;
1106 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109 free_coro_mortal (aTHX); 1247 free_coro_mortal (aTHX);
1110 UNLOCK;
1111
1112 if (expect_false (next->throw))
1113 {
1114 SV *exception = sv_2mortal (next->throw);
1115
1116 next->throw = 0;
1117 sv_setsv (ERRSV, exception);
1118 croak (0);
1119 }
1120} 1248}
1121 1249
1122/* 1250/*
1123 * this is a _very_ stripped down perl interpreter ;) 1251 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1252 */
… …
1136 /* normally we would need to skip the entersub here */ 1264 /* normally we would need to skip the entersub here */
1137 /* not doing so will re-execute it, which is exactly what we want */ 1265 /* not doing so will re-execute it, which is exactly what we want */
1138 /* PL_nop = PL_nop->op_next */ 1266 /* PL_nop = PL_nop->op_next */
1139 1267
1140 /* inject a fake subroutine call to cctx_init */ 1268 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1269 cctx_prepare (aTHX);
1142 1270
1143 /* cctx_run is the alternative tail of transfer() */ 1271 /* cctx_run is the alternative tail of transfer() */
1144 /* TODO: throwing an exception here might be deadly, VERIFY */
1145 transfer_tail (aTHX); 1272 transfer_tail (aTHX);
1146 1273
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1274 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1275 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1276 perl_run (PL_curinterp);
1277 /*
1278 * Unfortunately, there is no way to get at the return values of the
1279 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1280 * runtime errors here, as this is just a random interpreter, not a thread.
1281 */
1150 1282
1151 /* 1283 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1284 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1285 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1286 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1287 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1288 * coroutine as Coro has no such concept.
1289 * This actually isn't valid with the pthread backend, but OSes requiring
1290 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1291 */
1158 PL_top_env = main_top_env; 1292 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1293 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1294 }
1161} 1295}
… …
1238cctx_destroy (coro_cctx *cctx) 1372cctx_destroy (coro_cctx *cctx)
1239{ 1373{
1240 if (!cctx) 1374 if (!cctx)
1241 return; 1375 return;
1242 1376
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1378
1243 --cctx_count; 1379 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1380 coro_destroy (&cctx->cctx);
1245 1381
1246 /* coro_transfer creates new, empty cctx's */ 1382 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1383 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1441/** coroutine switching *****************************************************/
1306 1442
1307static void 1443static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1444transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1445{
1446 /* TODO: throwing up here is considered harmful */
1447
1310 if (expect_true (prev != next)) 1448 if (expect_true (prev != next))
1311 { 1449 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1450 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1451 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1452
1315 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED)) 1453 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1454 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1320 1455
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1456#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1457 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1458 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1459#endif
1325 } 1460 }
1326} 1461}
1327 1462
1328/* always use the TRANSFER macro */ 1463/* always use the TRANSFER macro */
1329static void NOINLINE 1464static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1466{
1332 dSTACKLEVEL; 1467 dSTACKLEVEL;
1333 1468
1334 /* sometimes transfer is only called to set idle_sp */ 1469 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1470 if (expect_false (!prev))
1336 { 1471 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1472 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1473 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1474 }
1340 else if (expect_true (prev != next)) 1475 else if (expect_true (prev != next))
1341 { 1476 {
1342 coro_cctx *prev__cctx; 1477 coro_cctx *cctx_prev;
1343 1478
1344 if (expect_false (prev->flags & CF_NEW)) 1479 if (expect_false (prev->flags & CF_NEW))
1345 { 1480 {
1346 /* create a new empty/source context */ 1481 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1482 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1483 prev->flags |= CF_RUNNING;
1350 } 1484 }
1351 1485
1352 prev->flags &= ~CF_RUNNING; 1486 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1487 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1488
1357 /* first get rid of the old state */ 1489 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1490 save_perl (aTHX_ prev);
1359 1491
1360 if (expect_false (next->flags & CF_NEW)) 1492 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1497 coro_setup (aTHX_ next);
1366 } 1498 }
1367 else 1499 else
1368 load_perl (aTHX_ next); 1500 load_perl (aTHX_ next);
1369 1501
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1502 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1503 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1504 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1505 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1506 && !force_cctx
1377 )) 1507 ))
1378 { 1508 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1509 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1510 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1511
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1512 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1513 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1514 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1515 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1516 next->cctx = cctx_get (aTHX);
1389 1517
1390 cctx_put (prev__cctx); 1518 cctx_put (cctx_current);
1391 } 1519 }
1520 else
1521 prev->cctx = cctx_current;
1392 1522
1393 ++next->usecount; 1523 ++next->usecount;
1394 1524
1395 if (expect_true (!next->cctx)) 1525 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1527
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1528 next->cctx = 0;
1399 transfer_next = next;
1400 1529
1401 if (expect_false (prev__cctx != next->cctx)) 1530 if (expect_false (cctx_prev != cctx_current))
1402 { 1531 {
1403 prev__cctx->top_env = PL_top_env; 1532 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1533 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1535 }
1407 1536
1408 transfer_tail (aTHX); 1537 transfer_tail (aTHX);
1409 } 1538 }
1410} 1539}
… …
1417static int 1546static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1547coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1548{
1420 if (coro->flags & CF_DESTROYED) 1549 if (coro->flags & CF_DESTROYED)
1421 return 0; 1550 return 0;
1551
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro);
1422 1554
1423 coro->flags |= CF_DESTROYED; 1555 coro->flags |= CF_DESTROYED;
1424 1556
1425 if (coro->flags & CF_READY) 1557 if (coro->flags & CF_READY)
1426 { 1558 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1559 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1560 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1561 --coro_nready;
1431 UNLOCK;
1432 } 1562 }
1433 else 1563 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1564 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1565
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1566 if (coro->mainstack
1437 { 1567 && coro->mainstack != main_mainstack
1438 struct coro temp; 1568 && coro->slot
1439 1569 && !PL_dirty)
1440 if (coro->flags & CF_RUNNING)
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442
1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro); 1570 coro_destruct_perl (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452 1571
1453 cctx_destroy (coro->cctx); 1572 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1574 SvREFCNT_dec (coro->args);
1575 SvREFCNT_dec (CORO_THROW);
1455 1576
1456 if (coro->next) coro->next->prev = coro->prev; 1577 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1578 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1579 if (coro == coro_first) coro_first = coro->next;
1459 1580
… …
1515 TRANSFER (ta, 1); 1636 TRANSFER (ta, 1);
1516} 1637}
1517 1638
1518/** Coro ********************************************************************/ 1639/** Coro ********************************************************************/
1519 1640
1520static void 1641INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1642coro_enq (pTHX_ struct coro *coro)
1522{ 1643{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1524}
1525 1645
1526static SV * 1646 SvREFCNT_inc_NN (coro->hv);
1647
1648 coro->next_ready = 0;
1649 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1650 ready [1] = coro;
1651}
1652
1653INLINE struct coro *
1527coro_deq (pTHX) 1654coro_deq (pTHX)
1528{ 1655{
1529 int prio; 1656 int prio;
1530 1657
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1532 if (AvFILLp (coro_ready [prio]) >= 0) 1659 {
1533 return av_shift (coro_ready [prio]); 1660 struct coro **ready = coro_ready [prio];
1661
1662 if (ready [0])
1663 {
1664 struct coro *coro = ready [0];
1665 ready [0] = coro->next_ready;
1666 return coro;
1667 }
1668 }
1534 1669
1535 return 0; 1670 return 0;
1671}
1672
1673static void
1674invoke_sv_ready_hook_helper (void)
1675{
1676 dTHX;
1677 dSP;
1678
1679 ENTER;
1680 SAVETMPS;
1681
1682 PUSHMARK (SP);
1683 PUTBACK;
1684 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1685
1686 FREETMPS;
1687 LEAVE;
1536} 1688}
1537 1689
1538static int 1690static int
1539api_ready (pTHX_ SV *coro_sv) 1691api_ready (pTHX_ SV *coro_sv)
1540{ 1692{
1541 struct coro *coro;
1542 SV *sv_hook;
1543 void (*xs_hook)(void);
1544
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1693 struct coro *coro = SvSTATE (coro_sv);
1549 1694
1550 if (coro->flags & CF_READY) 1695 if (coro->flags & CF_READY)
1551 return 0; 1696 return 0;
1552 1697
1553 coro->flags |= CF_READY; 1698 coro->flags |= CF_READY;
1554 1699
1555 LOCK; 1700 coro_enq (aTHX_ coro);
1556 1701
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1702 if (!coro_nready++)
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1703 if (coroapi.readyhook)
1559 1704 coroapi.readyhook ();
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1561 ++coro_nready;
1562
1563 UNLOCK;
1564
1565 if (sv_hook)
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 }
1580
1581 if (xs_hook)
1582 xs_hook ();
1583 1705
1584 return 1; 1706 return 1;
1585} 1707}
1586 1708
1587static int 1709static int
1588api_is_ready (pTHX_ SV *coro_sv) 1710api_is_ready (pTHX_ SV *coro_sv)
1589{ 1711{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1712 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1713}
1592 1714
1715/* expects to own a reference to next->hv */
1593INLINE void 1716INLINE void
1594prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1717prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1718{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1719 SV *prev_sv = SvRV (coro_current);
1720
1640 ta->prev = SvSTATE (prev_sv); 1721 ta->prev = SvSTATE_hv (prev_sv);
1722 ta->next = next;
1723
1641 TRANSFER_CHECK (*ta); 1724 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1725
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1726 SvRV_set (coro_current, (SV *)next->hv);
1645 1727
1646 LOCK;
1647 free_coro_mortal (aTHX); 1728 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1729 coro_mortal = prev_sv;
1649 UNLOCK; 1730}
1731
1732static void
1733prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1734{
1735 for (;;)
1736 {
1737 struct coro *next = coro_deq (aTHX);
1738
1739 if (expect_true (next))
1740 {
1741 /* cannot transfer to destroyed coros, skip and look for next */
1742 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1743 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1744 else
1745 {
1746 next->flags &= ~CF_READY;
1747 --coro_nready;
1748
1749 prepare_schedule_to (aTHX_ ta, next);
1750 break;
1751 }
1752 }
1753 else
1754 {
1755 /* nothing to schedule: call the idle handler */
1756 if (SvROK (sv_idle)
1757 && SvOBJECT (SvRV (sv_idle)))
1758 {
1759 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1760 api_ready (aTHX_ SvRV (sv_idle));
1761 --coro_nready;
1762 }
1763 else
1764 {
1765 dSP;
1766
1767 ENTER;
1768 SAVETMPS;
1769
1770 PUSHMARK (SP);
1771 PUTBACK;
1772 call_sv (sv_idle, G_VOID | G_DISCARD);
1773
1774 FREETMPS;
1775 LEAVE;
1776 }
1777 }
1778 }
1650} 1779}
1651 1780
1652INLINE void 1781INLINE void
1653prepare_cede (pTHX_ struct coro_transfer_args *ta) 1782prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1783{
… …
1675{ 1804{
1676 struct coro_transfer_args ta; 1805 struct coro_transfer_args ta;
1677 1806
1678 prepare_schedule (aTHX_ &ta); 1807 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1808 TRANSFER (ta, 1);
1809}
1810
1811static void
1812api_schedule_to (pTHX_ SV *coro_sv)
1813{
1814 struct coro_transfer_args ta;
1815 struct coro *next = SvSTATE (coro_sv);
1816
1817 SvREFCNT_inc_NN (coro_sv);
1818 prepare_schedule_to (aTHX_ &ta, next);
1680} 1819}
1681 1820
1682static int 1821static int
1683api_cede (pTHX) 1822api_cede (pTHX)
1684{ 1823{
… …
1713static void 1852static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1853api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1854{
1716 struct coro *coro = SvSTATE (coro_sv); 1855 struct coro *coro = SvSTATE (coro_sv);
1717 1856
1857 if (coro->flags & CF_RUNNING)
1858 croak ("cannot enable tracing on a running coroutine, caught");
1859
1718 if (flags & CC_TRACE) 1860 if (flags & CC_TRACE)
1719 { 1861 {
1720 if (!coro->cctx) 1862 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1863 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1864 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1865 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1866
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1867 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1868 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1869 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1870 {
… …
1733 else 1875 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1876 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1877 }
1736} 1878}
1737 1879
1738#if 0 1880static void
1881coro_call_on_destroy (pTHX_ struct coro *coro)
1882{
1883 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1884 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1885
1886 if (on_destroyp)
1887 {
1888 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1889
1890 while (AvFILLp (on_destroy) >= 0)
1891 {
1892 dSP; /* don't disturb outer sp */
1893 SV *cb = av_pop (on_destroy);
1894
1895 PUSHMARK (SP);
1896
1897 if (statusp)
1898 {
1899 int i;
1900 AV *status = (AV *)SvRV (*statusp);
1901 EXTEND (SP, AvFILLp (status) + 1);
1902
1903 for (i = 0; i <= AvFILLp (status); ++i)
1904 PUSHs (AvARRAY (status)[i]);
1905 }
1906
1907 PUTBACK;
1908 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1909 }
1910 }
1911}
1912
1913static void
1914slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1915{
1916 int i;
1917 HV *hv = (HV *)SvRV (coro_current);
1918 AV *av = newAV ();
1919
1920 /* items are actually not so common, so optimise for this case */
1921 if (items)
1922 {
1923 av_extend (av, items - 1);
1924
1925 for (i = 0; i < items; ++i)
1926 av_push (av, SvREFCNT_inc_NN (arg [i]));
1927 }
1928
1929 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1930
1931 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1932 api_ready (aTHX_ sv_manager);
1933
1934 frame->prepare = prepare_schedule;
1935 frame->check = slf_check_repeat;
1936
1937 /* as a minor optimisation, we could unwind all stacks here */
1938 /* but that puts extra pressure on pp_slf, and is not worth much */
1939 /*coro_unwind_stacks (aTHX);*/
1940}
1941
1942/*****************************************************************************/
1943/* async pool handler */
1944
1739static int 1945static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1946slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1947{
1742 AV *padlist; 1948 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1949 struct coro *coro = (struct coro *)frame->data;
1744 1950
1745 abort (); 1951 if (!coro->invoke_cb)
1952 return 1; /* loop till we have invoke */
1953 else
1954 {
1955 hv_store (hv, "desc", sizeof ("desc") - 1,
1956 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1957
1958 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1959
1960 {
1961 dSP;
1962 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1963 PUTBACK;
1964 }
1965
1966 SvREFCNT_dec (GvAV (PL_defgv));
1967 GvAV (PL_defgv) = coro->invoke_av;
1968 coro->invoke_av = 0;
1969
1970 return 0;
1971 }
1972}
1973
1974static void
1975slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1976{
1977 HV *hv = (HV *)SvRV (coro_current);
1978 struct coro *coro = SvSTATE_hv ((SV *)hv);
1979
1980 if (expect_true (coro->saved_deffh))
1981 {
1982 /* subsequent iteration */
1983 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1984 coro->saved_deffh = 0;
1985
1986 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1987 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1988 {
1989 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1990 coro->invoke_av = newAV ();
1991
1992 frame->prepare = prepare_nop;
1993 }
1994 else
1995 {
1996 av_clear (GvAV (PL_defgv));
1997 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1998
1999 coro->prio = 0;
2000
2001 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2002 api_trace (aTHX_ coro_current, 0);
2003
2004 frame->prepare = prepare_schedule;
2005 av_push (av_async_pool, SvREFCNT_inc (hv));
2006 }
2007 }
2008 else
2009 {
2010 /* first iteration, simply fall through */
2011 frame->prepare = prepare_nop;
2012 }
2013
2014 frame->check = slf_check_pool_handler;
2015 frame->data = (void *)coro;
2016}
2017
2018/*****************************************************************************/
2019/* rouse callback */
2020
2021#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2022
2023static void
2024coro_rouse_callback (pTHX_ CV *cv)
2025{
2026 dXSARGS;
2027 SV *data = (SV *)S_GENSUB_ARG;
2028
2029 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2030 {
2031 /* first call, set args */
2032 SV *coro = SvRV (data);
2033 AV *av = newAV ();
2034
2035 SvRV_set (data, (SV *)av);
2036
2037 /* better take a full copy of the arguments */
2038 while (items--)
2039 av_store (av, items, newSVsv (ST (items)));
2040
2041 api_ready (aTHX_ coro);
2042 SvREFCNT_dec (coro);
2043 }
2044
2045 XSRETURN_EMPTY;
2046}
2047
2048static int
2049slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2050{
2051 SV *data = (SV *)frame->data;
2052
2053 if (CORO_THROW)
2054 return 0;
2055
2056 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2057 return 1;
2058
2059 /* now push all results on the stack */
2060 {
2061 dSP;
2062 AV *av = (AV *)SvRV (data);
2063 int i;
2064
2065 EXTEND (SP, AvFILLp (av) + 1);
2066 for (i = 0; i <= AvFILLp (av); ++i)
2067 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2068
2069 /* we have stolen the elements, so set length to zero and free */
2070 AvFILLp (av) = -1;
2071 av_undef (av);
2072
2073 PUTBACK;
2074 }
1746 2075
1747 return 0; 2076 return 0;
1748} 2077}
1749 2078
1750static MGVTBL coro_gensub_vtbl = { 2079static void
1751 0, 0, 0, 0, 2080slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2081{
1753}; 2082 SV *cb;
1754#endif 2083
2084 if (items)
2085 cb = arg [0];
2086 else
2087 {
2088 struct coro *coro = SvSTATE_current;
2089
2090 if (!coro->rouse_cb)
2091 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2092
2093 cb = sv_2mortal (coro->rouse_cb);
2094 coro->rouse_cb = 0;
2095 }
2096
2097 if (!SvROK (cb)
2098 || SvTYPE (SvRV (cb)) != SVt_PVCV
2099 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2100 croak ("Coro::rouse_wait called with illegal callback argument,");
2101
2102 {
2103 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2104 SV *data = (SV *)S_GENSUB_ARG;
2105
2106 frame->data = (void *)data;
2107 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2108 frame->check = slf_check_rouse_wait;
2109 }
2110}
2111
2112static SV *
2113coro_new_rouse_cb (pTHX)
2114{
2115 HV *hv = (HV *)SvRV (coro_current);
2116 struct coro *coro = SvSTATE_hv (hv);
2117 SV *data = newRV_inc ((SV *)hv);
2118 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2119
2120 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2121 SvREFCNT_dec (data); /* magicext increases the refcount */
2122
2123 SvREFCNT_dec (coro->rouse_cb);
2124 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2125
2126 return cb;
2127}
2128
2129/*****************************************************************************/
2130/* schedule-like-function opcode (SLF) */
2131
2132static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2133static const CV *slf_cv;
2134static SV **slf_argv;
2135static int slf_argc, slf_arga; /* count, allocated */
2136static I32 slf_ax; /* top of stack, for restore */
2137
2138/* this restores the stack in the case we patched the entersub, to */
2139/* recreate the stack frame as perl will on following calls */
2140/* since entersub cleared the stack */
2141static OP *
2142pp_restore (pTHX)
2143{
2144 int i;
2145 SV **SP = PL_stack_base + slf_ax;
2146
2147 PUSHMARK (SP);
2148
2149 EXTEND (SP, slf_argc + 1);
2150
2151 for (i = 0; i < slf_argc; ++i)
2152 PUSHs (sv_2mortal (slf_argv [i]));
2153
2154 PUSHs ((SV *)CvGV (slf_cv));
2155
2156 RETURNOP (slf_restore.op_first);
2157}
2158
2159static void
2160slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2161{
2162 SV **arg = (SV **)slf_frame.data;
2163
2164 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2165}
2166
2167static void
2168slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 if (items != 2)
2171 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2172
2173 frame->prepare = slf_prepare_transfer;
2174 frame->check = slf_check_nop;
2175 frame->data = (void *)arg; /* let's hope it will stay valid */
2176}
2177
2178static void
2179slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2180{
2181 frame->prepare = prepare_schedule;
2182 frame->check = slf_check_nop;
2183}
2184
2185static void
2186slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2187{
2188 struct coro *next = (struct coro *)slf_frame.data;
2189
2190 SvREFCNT_inc_NN (next->hv);
2191 prepare_schedule_to (aTHX_ ta, next);
2192}
2193
2194static void
2195slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2196{
2197 if (!items)
2198 croak ("Coro::schedule_to expects a coroutine argument, caught");
2199
2200 frame->data = (void *)SvSTATE (arg [0]);
2201 frame->prepare = slf_prepare_schedule_to;
2202 frame->check = slf_check_nop;
2203}
2204
2205static void
2206slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 api_ready (aTHX_ SvRV (coro_current));
2209
2210 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2211}
2212
2213static void
2214slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2215{
2216 frame->prepare = prepare_cede;
2217 frame->check = slf_check_nop;
2218}
2219
2220static void
2221slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2222{
2223 frame->prepare = prepare_cede_notself;
2224 frame->check = slf_check_nop;
2225}
2226
2227/*
2228 * these not obviously related functions are all rolled into one
2229 * function to increase chances that they all will call transfer with the same
2230 * stack offset
2231 * SLF stands for "schedule-like-function".
2232 */
2233static OP *
2234pp_slf (pTHX)
2235{
2236 I32 checkmark; /* mark SP to see how many elements check has pushed */
2237
2238 /* set up the slf frame, unless it has already been set-up */
2239 /* the latter happens when a new coro has been started */
2240 /* or when a new cctx was attached to an existing coroutine */
2241 if (expect_true (!slf_frame.prepare))
2242 {
2243 /* first iteration */
2244 dSP;
2245 SV **arg = PL_stack_base + TOPMARK + 1;
2246 int items = SP - arg; /* args without function object */
2247 SV *gv = *sp;
2248
2249 /* do a quick consistency check on the "function" object, and if it isn't */
2250 /* for us, divert to the real entersub */
2251 if (SvTYPE (gv) != SVt_PVGV
2252 || !GvCV (gv)
2253 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2254 return PL_ppaddr[OP_ENTERSUB](aTHX);
2255
2256 if (!(PL_op->op_flags & OPf_STACKED))
2257 {
2258 /* ampersand-form of call, use @_ instead of stack */
2259 AV *av = GvAV (PL_defgv);
2260 arg = AvARRAY (av);
2261 items = AvFILLp (av) + 1;
2262 }
2263
2264 /* now call the init function, which needs to set up slf_frame */
2265 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2266 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2267
2268 /* pop args */
2269 SP = PL_stack_base + POPMARK;
2270
2271 PUTBACK;
2272 }
2273
2274 /* now that we have a slf_frame, interpret it! */
2275 /* we use a callback system not to make the code needlessly */
2276 /* complicated, but so we can run multiple perl coros from one cctx */
2277
2278 do
2279 {
2280 struct coro_transfer_args ta;
2281
2282 slf_frame.prepare (aTHX_ &ta);
2283 TRANSFER (ta, 0);
2284
2285 checkmark = PL_stack_sp - PL_stack_base;
2286 }
2287 while (slf_frame.check (aTHX_ &slf_frame));
2288
2289 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2290
2291 /* exception handling */
2292 if (expect_false (CORO_THROW))
2293 {
2294 SV *exception = sv_2mortal (CORO_THROW);
2295
2296 CORO_THROW = 0;
2297 sv_setsv (ERRSV, exception);
2298 croak (0);
2299 }
2300
2301 /* return value handling - mostly like entersub */
2302 /* make sure we put something on the stack in scalar context */
2303 if (GIMME_V == G_SCALAR)
2304 {
2305 dSP;
2306 SV **bot = PL_stack_base + checkmark;
2307
2308 if (sp == bot) /* too few, push undef */
2309 bot [1] = &PL_sv_undef;
2310 else if (sp != bot + 1) /* too many, take last one */
2311 bot [1] = *sp;
2312
2313 SP = bot + 1;
2314
2315 PUTBACK;
2316 }
2317
2318 return NORMAL;
2319}
2320
2321static void
2322api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2323{
2324 int i;
2325 SV **arg = PL_stack_base + ax;
2326 int items = PL_stack_sp - arg + 1;
2327
2328 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2329
2330 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2331 && PL_op->op_ppaddr != pp_slf)
2332 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2333
2334 CvFLAGS (cv) |= CVf_SLF;
2335 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2336 slf_cv = cv;
2337
2338 /* we patch the op, and then re-run the whole call */
2339 /* we have to put the same argument on the stack for this to work */
2340 /* and this will be done by pp_restore */
2341 slf_restore.op_next = (OP *)&slf_restore;
2342 slf_restore.op_type = OP_CUSTOM;
2343 slf_restore.op_ppaddr = pp_restore;
2344 slf_restore.op_first = PL_op;
2345
2346 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2347
2348 if (PL_op->op_flags & OPf_STACKED)
2349 {
2350 if (items > slf_arga)
2351 {
2352 slf_arga = items;
2353 free (slf_argv);
2354 slf_argv = malloc (slf_arga * sizeof (SV *));
2355 }
2356
2357 slf_argc = items;
2358
2359 for (i = 0; i < items; ++i)
2360 slf_argv [i] = SvREFCNT_inc (arg [i]);
2361 }
2362 else
2363 slf_argc = 0;
2364
2365 PL_op->op_ppaddr = pp_slf;
2366 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2367
2368 PL_op = (OP *)&slf_restore;
2369}
2370
2371/*****************************************************************************/
2372/* dynamic wind */
2373
2374static void
2375on_enterleave_call (pTHX_ SV *cb)
2376{
2377 dSP;
2378
2379 PUSHSTACK;
2380
2381 PUSHMARK (SP);
2382 PUTBACK;
2383 call_sv (cb, G_VOID | G_DISCARD);
2384 SPAGAIN;
2385
2386 POPSTACK;
2387}
2388
2389static SV *
2390coro_avp_pop_and_free (pTHX_ AV **avp)
2391{
2392 AV *av = *avp;
2393 SV *res = av_pop (av);
2394
2395 if (AvFILLp (av) < 0)
2396 {
2397 *avp = 0;
2398 SvREFCNT_dec (av);
2399 }
2400
2401 return res;
2402}
2403
2404static void
2405coro_pop_on_enter (pTHX_ void *coro)
2406{
2407 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2408 SvREFCNT_dec (cb);
2409}
2410
2411static void
2412coro_pop_on_leave (pTHX_ void *coro)
2413{
2414 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2415 on_enterleave_call (aTHX_ sv_2mortal (cb));
2416}
1755 2417
1756/*****************************************************************************/ 2418/*****************************************************************************/
1757/* PerlIO::cede */ 2419/* PerlIO::cede */
1758 2420
1759typedef struct 2421typedef struct
… …
1827 PerlIOBuf_get_cnt, 2489 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2490 PerlIOBuf_set_ptrcnt,
1829}; 2491};
1830 2492
1831/*****************************************************************************/ 2493/*****************************************************************************/
2494/* Coro::Semaphore & Coro::Signal */
1832 2495
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2496static SV *
1843pp_restore (pTHX) 2497coro_waitarray_new (pTHX_ int count)
1844{ 2498{
1845 dSP; 2499 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2500 AV *av = newAV ();
2501 SV **ary;
1846 2502
1847 PUSHMARK (SP); 2503 /* unfortunately, building manually saves memory */
2504 Newx (ary, 2, SV *);
2505 AvALLOC (av) = ary;
2506#if PERL_VERSION_ATLEAST (5,10,0)
2507 AvARRAY (av) = ary;
2508#else
2509 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2510 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2511 SvPVX ((SV *)av) = (char *)ary;
2512#endif
2513 AvMAX (av) = 1;
2514 AvFILLp (av) = 0;
2515 ary [0] = newSViv (count);
1848 2516
1849 EXTEND (SP, 3); 2517 return newRV_noinc ((SV *)av);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2518}
1856 2519
1857static void 2520/* semaphore */
1858slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859{
1860 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861 CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862}
1863 2521
1864static void 2522static void
1865slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2523coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866{ 2524{
1867 prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); 2525 SV *count_sv = AvARRAY (av)[0];
1868} 2526 IV count = SvIVX (count_sv);
1869 2527
1870static void 2528 count += adjust;
1871slf_init_transfer (pTHX_ SV **arg, int items) 2529 SvIVX (count_sv) = count;
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875 2530
1876 CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ 2531 /* now wake up as many waiters as are expected to lock */
1877} 2532 while (count > 0 && AvFILLp (av) > 0)
1878
1879static void
1880slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881{
1882 SV **arg = (SV **)CORO_SLF_DATA;
1883
1884 prepare_transfer (ta, arg [0], arg [1]);
1885}
1886
1887static void
1888slf_init_nop (pTHX_ SV **arg, int items)
1889{
1890}
1891
1892/* slf_prepare_schedule == prepare_schedule */
1893/* slf_prepare_cede == prepare_cede */
1894/* slf_prepare_notself == prepare_notself */
1895
1896/* we hijack an hopefully unused CV flag for our purposes */
1897#define CVf_SLF 0x4000
1898
1899/*
1900 * these not obviously related functions are all rolled into one
1901 * function to increase chances that they all will call transfer with the same
1902 * stack offset
1903 * SLF stands for "schedule-like-function".
1904 */
1905static OP *
1906pp_slf (pTHX)
1907{
1908 I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910 if (expect_true (!slf_frame.prepare))
1911 { 2533 {
1912 /* first iteration */ 2534 SV *cb;
1913 dSP;
1914 SV **arg = PL_stack_base + TOPMARK + 1;
1915 int items = SP - arg; /* args without function object */
1916 SV *gv = *sp;
1917 struct CoroSLF *slf;
1918 2535
1919 /* do a quick consistency check on the "function" object, and if it isn't */ 2536 /* swap first two elements so we can shift a waiter */
1920 /* for us, divert to the real entersub */ 2537 AvARRAY (av)[0] = AvARRAY (av)[1];
1921 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2538 AvARRAY (av)[1] = count_sv;
1922 return PL_ppaddr[OP_ENTERSUB](aTHX); 2539 cb = av_shift (av);
1923 2540
1924 /* pop args */ 2541 if (SvOBJECT (cb))
1925 SP = PL_stack_base + POPMARK;
1926
1927 if (!(PL_op->op_flags & OPf_STACKED))
1928 { 2542 {
1929 /* ampersand-form of call, use @_ instead of stack */ 2543 api_ready (aTHX_ cb);
1930 AV *av = GvAV (PL_defgv); 2544 --count;
1931 arg = AvARRAY (av);
1932 items = AvFILLp (av) + 1;
1933 } 2545 }
1934 2546 else if (SvTYPE (cb) == SVt_PVCV)
2547 {
2548 dSP;
2549 PUSHMARK (SP);
2550 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1935 PUTBACK; 2551 PUTBACK;
2552 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2553 }
1936 2554
1937 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2555 SvREFCNT_dec (cb);
1938 slf_frame.prepare = slf->prepare;
1939 slf_frame.check = slf->check;
1940 slf->init (aTHX_ arg, items);
1941 }
1942
1943 /* now interpret the slf_frame */
1944 /* we use a callback system not to make the code needlessly */
1945 /* complicated, but so we can run multiple perl coros from one cctx */
1946
1947 do
1948 { 2556 }
1949 struct coro_transfer_args ta; 2557}
1950 2558
1951 slf_frame.prepare (aTHX_ &ta); 2559static void
1952 TRANSFER (ta, 0); 2560coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2561{
2562 /* call $sem->adjust (0) to possibly wake up some other waiters */
2563 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2564}
1953 2565
1954 checkmark = PL_stack_sp - PL_stack_base; 2566static int
2567slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2568{
2569 AV *av = (AV *)frame->data;
2570 SV *count_sv = AvARRAY (av)[0];
2571
2572 /* if we are about to throw, don't actually acquire the lock, just throw */
2573 if (CORO_THROW)
2574 return 0;
2575 else if (SvIVX (count_sv) > 0)
1955 } 2576 {
1956 while (slf_frame.check (aTHX)); 2577 SvSTATE_current->on_destroy = 0;
1957 2578
2579 if (acquire)
2580 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2581 else
2582 coro_semaphore_adjust (aTHX_ av, 0);
2583
2584 return 0;
2585 }
2586 else
2587 {
2588 int i;
2589 /* if we were woken up but can't down, we look through the whole */
2590 /* waiters list and only add us if we aren't in there already */
2591 /* this avoids some degenerate memory usage cases */
2592
2593 for (i = 1; i <= AvFILLp (av); ++i)
2594 if (AvARRAY (av)[i] == SvRV (coro_current))
2595 return 1;
2596
2597 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2598 return 1;
2599 }
2600}
2601
2602static int
2603slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2604{
2605 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2606}
2607
2608static int
2609slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2610{
2611 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2612}
2613
2614static void
2615slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2616{
2617 AV *av = (AV *)SvRV (arg [0]);
2618
2619 if (SvIVX (AvARRAY (av)[0]) > 0)
2620 {
2621 frame->data = (void *)av;
2622 frame->prepare = prepare_nop;
2623 }
2624 else
2625 {
2626 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2627
2628 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2629 frame->prepare = prepare_schedule;
2630
2631 /* to avoid race conditions when a woken-up coro gets terminated */
2632 /* we arrange for a temporary on_destroy that calls adjust (0) */
2633 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2634 }
2635}
2636
2637static void
2638slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2639{
2640 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2641 frame->check = slf_check_semaphore_down;
2642}
2643
2644static void
2645slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2646{
2647 if (items >= 2)
2648 {
2649 /* callback form */
2650 AV *av = (AV *)SvRV (arg [0]);
2651 SV *cb_cv = s_get_cv_croak (arg [1]);
2652
2653 av_push (av, SvREFCNT_inc_NN (cb_cv));
2654
2655 if (SvIVX (AvARRAY (av)[0]) > 0)
2656 coro_semaphore_adjust (aTHX_ av, 0);
2657
2658 frame->prepare = prepare_nop;
2659 frame->check = slf_check_nop;
2660 }
2661 else
2662 {
2663 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2664 frame->check = slf_check_semaphore_wait;
2665 }
2666}
2667
2668/* signal */
2669
2670static void
2671coro_signal_wake (pTHX_ AV *av, int count)
2672{
2673 SvIVX (AvARRAY (av)[0]) = 0;
2674
2675 /* now signal count waiters */
2676 while (count > 0 && AvFILLp (av) > 0)
2677 {
2678 SV *cb;
2679
2680 /* swap first two elements so we can shift a waiter */
2681 cb = AvARRAY (av)[0];
2682 AvARRAY (av)[0] = AvARRAY (av)[1];
2683 AvARRAY (av)[1] = cb;
2684
2685 cb = av_shift (av);
2686
2687 if (SvTYPE (cb) == SVt_PVCV)
2688 {
2689 dSP;
2690 PUSHMARK (SP);
2691 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2692 PUTBACK;
2693 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2694 }
2695 else
2696 {
2697 api_ready (aTHX_ cb);
2698 sv_setiv (cb, 0); /* signal waiter */
2699 }
2700
2701 SvREFCNT_dec (cb);
2702
2703 --count;
2704 }
2705}
2706
2707static int
2708slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2709{
2710 /* if we are about to throw, also stop waiting */
2711 return SvROK ((SV *)frame->data) && !CORO_THROW;
2712}
2713
2714static void
2715slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2716{
2717 AV *av = (AV *)SvRV (arg [0]);
2718
2719 if (items >= 2)
2720 {
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2722 av_push (av, SvREFCNT_inc_NN (cb_cv));
2723
2724 if (SvIVX (AvARRAY (av)[0]))
2725 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2726
2727 frame->prepare = prepare_nop;
2728 frame->check = slf_check_nop;
2729 }
2730 else if (SvIVX (AvARRAY (av)[0]))
2731 {
2732 SvIVX (AvARRAY (av)[0]) = 0;
2733 frame->prepare = prepare_nop;
2734 frame->check = slf_check_nop;
2735 }
2736 else
2737 {
2738 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2739
2740 av_push (av, waiter);
2741
2742 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2743 frame->prepare = prepare_schedule;
2744 frame->check = slf_check_signal_wait;
2745 }
2746}
2747
2748/*****************************************************************************/
2749/* Coro::AIO */
2750
2751#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2752
2753/* helper storage struct */
2754struct io_state
2755{
2756 int errorno;
2757 I32 laststype; /* U16 in 5.10.0 */
2758 int laststatval;
2759 Stat_t statcache;
2760};
2761
2762static void
2763coro_aio_callback (pTHX_ CV *cv)
2764{
2765 dXSARGS;
2766 AV *state = (AV *)S_GENSUB_ARG;
2767 SV *coro = av_pop (state);
2768 SV *data_sv = newSV (sizeof (struct io_state));
2769
2770 av_extend (state, items - 1);
2771
2772 sv_upgrade (data_sv, SVt_PV);
2773 SvCUR_set (data_sv, sizeof (struct io_state));
2774 SvPOK_only (data_sv);
2775
2776 {
2777 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2778
2779 data->errorno = errno;
2780 data->laststype = PL_laststype;
2781 data->laststatval = PL_laststatval;
2782 data->statcache = PL_statcache;
2783 }
2784
2785 /* now build the result vector out of all the parameters and the data_sv */
2786 {
2787 int i;
2788
2789 for (i = 0; i < items; ++i)
2790 av_push (state, SvREFCNT_inc_NN (ST (i)));
2791 }
2792
2793 av_push (state, data_sv);
2794
2795 api_ready (aTHX_ coro);
2796 SvREFCNT_dec (coro);
2797 SvREFCNT_dec ((AV *)state);
2798}
2799
2800static int
2801slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2802{
2803 AV *state = (AV *)frame->data;
2804
2805 /* if we are about to throw, return early */
2806 /* this does not cancel the aio request, but at least */
2807 /* it quickly returns */
2808 if (CORO_THROW)
2809 return 0;
2810
2811 /* one element that is an RV? repeat! */
2812 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2813 return 1;
2814
2815 /* restore status */
2816 {
2817 SV *data_sv = av_pop (state);
2818 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2819
2820 errno = data->errorno;
2821 PL_laststype = data->laststype;
2822 PL_laststatval = data->laststatval;
2823 PL_statcache = data->statcache;
2824
2825 SvREFCNT_dec (data_sv);
2826 }
2827
2828 /* push result values */
1958 { 2829 {
1959 dSP; 2830 dSP;
1960 SV **bot = PL_stack_base + checkmark; 2831 int i;
1961 int gimme = GIMME_V;
1962 2832
1963 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2833 EXTEND (SP, AvFILLp (state) + 1);
1964 2834 for (i = 0; i <= AvFILLp (state); ++i)
1965 /* make sure we put something on the stack in scalar context */ 2835 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966 if (gimme == G_SCALAR)
1967 {
1968 if (sp == bot)
1969 XPUSHs (&PL_sv_undef);
1970
1971 SP = bot + 1;
1972 }
1973 2836
1974 PUTBACK; 2837 PUTBACK;
1975 } 2838 }
1976 2839
1977 return NORMAL; 2840 return 0;
1978} 2841}
1979 2842
1980static void 2843static void
1981api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2844slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982{ 2845{
1983 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2846 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2847 SV *coro_hv = SvRV (coro_current);
2848 struct coro *coro = SvSTATE_hv (coro_hv);
1985 2849
1986 if (items > 2) 2850 /* put our coroutine id on the state arg */
1987 croak ("Coro only supports a max of two arguments to SLF functions."); 2851 av_push (state, SvREFCNT_inc_NN (coro_hv));
1988 2852
1989 CvFLAGS (cv) |= CVf_SLF; 2853 /* first see whether we have a non-zero priority and set it as AIO prio */
1990 CvXSUBANY (cv).any_ptr = (void *)slf; 2854 if (coro->prio)
1991 slf_cv = cv; 2855 {
2856 dSP;
1992 2857
1993 /* we patch the op, and then re-run the whole call */ 2858 static SV *prio_cv;
1994 /* we have to put the same argument on the stack for this to work */ 2859 static SV *prio_sv;
1995 /* and this will be done by pp_restore */
1996 slf_restore.op_next = (OP *)&slf_restore;
1997 slf_restore.op_type = OP_NULL;
1998 slf_restore.op_ppaddr = pp_restore;
1999 slf_restore.op_first = PL_op;
2000 2860
2001 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2861 if (expect_false (!prio_cv))
2002 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2862 {
2863 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2864 prio_sv = newSViv (0);
2865 }
2003 2866
2004 PL_op->op_ppaddr = pp_slf; 2867 PUSHMARK (SP);
2868 sv_setiv (prio_sv, coro->prio);
2869 XPUSHs (prio_sv);
2005 2870
2006 PL_op = (OP *)&slf_restore; 2871 PUTBACK;
2872 call_sv (prio_cv, G_VOID | G_DISCARD);
2873 }
2874
2875 /* now call the original request */
2876 {
2877 dSP;
2878 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2879 int i;
2880
2881 PUSHMARK (SP);
2882
2883 /* first push all args to the stack */
2884 EXTEND (SP, items + 1);
2885
2886 for (i = 0; i < items; ++i)
2887 PUSHs (arg [i]);
2888
2889 /* now push the callback closure */
2890 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2891
2892 /* now call the AIO function - we assume our request is uncancelable */
2893 PUTBACK;
2894 call_sv ((SV *)req, G_VOID | G_DISCARD);
2895 }
2896
2897 /* now that the requets is going, we loop toll we have a result */
2898 frame->data = (void *)state;
2899 frame->prepare = prepare_schedule;
2900 frame->check = slf_check_aio_req;
2901}
2902
2903static void
2904coro_aio_req_xs (pTHX_ CV *cv)
2905{
2906 dXSARGS;
2907
2908 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2909
2910 XSRETURN_EMPTY;
2911}
2912
2913/*****************************************************************************/
2914
2915#if CORO_CLONE
2916# include "clone.c"
2917#endif
2918
2919/*****************************************************************************/
2920
2921static SV *
2922coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2923{
2924 SV *coro_sv;
2925 struct coro *coro;
2926 MAGIC *mg;
2927 HV *hv;
2928 SV *cb;
2929 int i;
2930
2931 if (argc > 0)
2932 {
2933 cb = s_get_cv_croak (argv [0]);
2934
2935 if (!is_coro)
2936 {
2937 if (CvISXSUB (cb))
2938 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2939
2940 if (!CvROOT (cb))
2941 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2942 }
2943 }
2944
2945 Newz (0, coro, 1, struct coro);
2946 coro->args = newAV ();
2947 coro->flags = CF_NEW;
2948
2949 if (coro_first) coro_first->prev = coro;
2950 coro->next = coro_first;
2951 coro_first = coro;
2952
2953 coro->hv = hv = newHV ();
2954 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2955 mg->mg_flags |= MGf_DUP;
2956 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
2957
2958 if (argc > 0)
2959 {
2960 av_extend (coro->args, argc + is_coro - 1);
2961
2962 if (is_coro)
2963 {
2964 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2965 cb = (SV *)cv_coro_run;
2966 }
2967
2968 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2969
2970 for (i = 1; i < argc; i++)
2971 av_push (coro->args, newSVsv (argv [i]));
2972 }
2973
2974 return coro_sv;
2007} 2975}
2008 2976
2009MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2977MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010 2978
2011PROTOTYPES: DISABLE 2979PROTOTYPES: DISABLE
2012 2980
2013BOOT: 2981BOOT:
2014{ 2982{
2015#ifdef USE_ITHREADS 2983#ifdef USE_ITHREADS
2016 MUTEX_INIT (&coro_lock);
2017# if CORO_PTHREAD 2984# if CORO_PTHREAD
2018 coro_thx = PERL_GET_CONTEXT; 2985 coro_thx = PERL_GET_CONTEXT;
2019# endif 2986# endif
2020#endif 2987#endif
2021 BOOT_PAGESIZE; 2988 BOOT_PAGESIZE;
2022 2989
2990 cctx_current = cctx_new_empty ();
2991
2023 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2992 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2024 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2993 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2025 2994
2026 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2995 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2027 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2996 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2042 main_top_env = PL_top_env; 3011 main_top_env = PL_top_env;
2043 3012
2044 while (main_top_env->je_prev) 3013 while (main_top_env->je_prev)
2045 main_top_env = main_top_env->je_prev; 3014 main_top_env = main_top_env->je_prev;
2046 3015
3016 {
3017 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3018
3019 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3020 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3021
3022 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3023 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3024 }
3025
2047 coroapi.ver = CORO_API_VERSION; 3026 coroapi.ver = CORO_API_VERSION;
2048 coroapi.rev = CORO_API_REVISION; 3027 coroapi.rev = CORO_API_REVISION;
3028
2049 coroapi.transfer = api_transfer; 3029 coroapi.transfer = api_transfer;
3030
3031 coroapi.sv_state = SvSTATE_;
2050 coroapi.execute_slf = api_execute_slf; 3032 coroapi.execute_slf = api_execute_slf;
2051 coroapi.sv_state = SvSTATE_; 3033 coroapi.prepare_nop = prepare_nop;
3034 coroapi.prepare_schedule = prepare_schedule;
3035 coroapi.prepare_cede = prepare_cede;
3036 coroapi.prepare_cede_notself = prepare_cede_notself;
2052 3037
2053 { 3038 {
2054 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3039 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055 3040
2056 if (!svp) croak ("Time::HiRes is required"); 3041 if (!svp) croak ("Time::HiRes is required");
2057 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3042 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2058 3043
2059 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3044 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3045
3046 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3047 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2060 } 3048 }
2061 3049
2062 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3050 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2063} 3051}
2064 3052
2065SV * 3053SV *
2066new (char *klass, ...) 3054new (SV *klass, ...)
3055 ALIAS:
3056 Coro::new = 1
2067 CODE: 3057 CODE:
2068{ 3058 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2069 struct coro *coro; 3059 OUTPUT:
2070 MAGIC *mg;
2071 HV *hv;
2072 int i;
2073
2074 Newz (0, coro, 1, struct coro);
2075 coro->args = newAV ();
2076 coro->flags = CF_NEW;
2077
2078 if (coro_first) coro_first->prev = coro;
2079 coro->next = coro_first;
2080 coro_first = coro;
2081
2082 coro->hv = hv = newHV ();
2083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2084 mg->mg_flags |= MGf_DUP;
2085 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2086
2087 av_extend (coro->args, items - 1);
2088 for (i = 1; i < items; i++)
2089 av_push (coro->args, newSVsv (ST (i)));
2090}
2091 OUTPUT:
2092 RETVAL 3060 RETVAL
2093
2094void
2095_set_stacklevel (...)
2096 CODE:
2097{
2098 static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100}
2101 3061
2102void 3062void
2103transfer (...) 3063transfer (...)
3064 PROTOTYPE: $$
2104 CODE: 3065 CODE:
2105{ 3066 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2106 static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108}
2109 3067
2110bool 3068bool
2111_destroy (SV *coro_sv) 3069_destroy (SV *coro_sv)
2112 CODE: 3070 CODE:
2113 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3071 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2118_exit (int code) 3076_exit (int code)
2119 PROTOTYPE: $ 3077 PROTOTYPE: $
2120 CODE: 3078 CODE:
2121 _exit (code); 3079 _exit (code);
2122 3080
3081SV *
3082clone (Coro::State coro)
3083 CODE:
3084{
3085#if CORO_CLONE
3086 struct coro *ncoro = coro_clone (aTHX_ coro);
3087 MAGIC *mg;
3088 /* TODO: too much duplication */
3089 ncoro->hv = newHV ();
3090 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3091 mg->mg_flags |= MGf_DUP;
3092 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3093#else
3094 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3095#endif
3096}
3097 OUTPUT:
3098 RETVAL
3099
2123int 3100int
2124cctx_stacksize (int new_stacksize = 0) 3101cctx_stacksize (int new_stacksize = 0)
3102 PROTOTYPE: ;$
2125 CODE: 3103 CODE:
2126 RETVAL = cctx_stacksize; 3104 RETVAL = cctx_stacksize;
2127 if (new_stacksize) 3105 if (new_stacksize)
2128 { 3106 {
2129 cctx_stacksize = new_stacksize; 3107 cctx_stacksize = new_stacksize;
… …
2132 OUTPUT: 3110 OUTPUT:
2133 RETVAL 3111 RETVAL
2134 3112
2135int 3113int
2136cctx_max_idle (int max_idle = 0) 3114cctx_max_idle (int max_idle = 0)
3115 PROTOTYPE: ;$
2137 CODE: 3116 CODE:
2138 RETVAL = cctx_max_idle; 3117 RETVAL = cctx_max_idle;
2139 if (max_idle > 1) 3118 if (max_idle > 1)
2140 cctx_max_idle = max_idle; 3119 cctx_max_idle = max_idle;
2141 OUTPUT: 3120 OUTPUT:
2142 RETVAL 3121 RETVAL
2143 3122
2144int 3123int
2145cctx_count () 3124cctx_count ()
3125 PROTOTYPE:
2146 CODE: 3126 CODE:
2147 RETVAL = cctx_count; 3127 RETVAL = cctx_count;
2148 OUTPUT: 3128 OUTPUT:
2149 RETVAL 3129 RETVAL
2150 3130
2151int 3131int
2152cctx_idle () 3132cctx_idle ()
3133 PROTOTYPE:
2153 CODE: 3134 CODE:
2154 RETVAL = cctx_idle; 3135 RETVAL = cctx_idle;
2155 OUTPUT: 3136 OUTPUT:
2156 RETVAL 3137 RETVAL
2157 3138
2158void 3139void
2159list () 3140list ()
3141 PROTOTYPE:
2160 PPCODE: 3142 PPCODE:
2161{ 3143{
2162 struct coro *coro; 3144 struct coro *coro;
2163 for (coro = coro_first; coro; coro = coro->next) 3145 for (coro = coro_first; coro; coro = coro->next)
2164 if (coro->hv) 3146 if (coro->hv)
… …
2171 eval = 1 3153 eval = 1
2172 CODE: 3154 CODE:
2173{ 3155{
2174 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3156 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2175 { 3157 {
2176 struct coro temp; 3158 struct coro *current = SvSTATE_current;
2177 3159
2178 if (!(coro->flags & CF_RUNNING)) 3160 if (current != coro)
2179 { 3161 {
2180 PUTBACK; 3162 PUTBACK;
2181 save_perl (aTHX_ &temp); 3163 save_perl (aTHX_ current);
2182 load_perl (aTHX_ coro); 3164 load_perl (aTHX_ coro);
3165 SPAGAIN;
2183 } 3166 }
2184 3167
2185 {
2186 dSP;
2187 ENTER;
2188 SAVETMPS;
2189 PUTBACK;
2190 PUSHSTACK; 3168 PUSHSTACK;
3169
2191 PUSHMARK (SP); 3170 PUSHMARK (SP);
3171 PUTBACK;
2192 3172
2193 if (ix) 3173 if (ix)
2194 eval_sv (coderef, 0); 3174 eval_sv (coderef, 0);
2195 else 3175 else
2196 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3176 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2197 3177
2198 POPSTACK; 3178 POPSTACK;
2199 SPAGAIN; 3179 SPAGAIN;
2200 FREETMPS;
2201 LEAVE;
2202 PUTBACK;
2203 }
2204 3180
2205 if (!(coro->flags & CF_RUNNING)) 3181 if (current != coro)
2206 { 3182 {
3183 PUTBACK;
2207 save_perl (aTHX_ coro); 3184 save_perl (aTHX_ coro);
2208 load_perl (aTHX_ &temp); 3185 load_perl (aTHX_ current);
2209 SPAGAIN; 3186 SPAGAIN;
2210 } 3187 }
2211 } 3188 }
2212} 3189}
2213 3190
… …
2217 ALIAS: 3194 ALIAS:
2218 is_ready = CF_READY 3195 is_ready = CF_READY
2219 is_running = CF_RUNNING 3196 is_running = CF_RUNNING
2220 is_new = CF_NEW 3197 is_new = CF_NEW
2221 is_destroyed = CF_DESTROYED 3198 is_destroyed = CF_DESTROYED
3199 is_suspended = CF_SUSPENDED
2222 CODE: 3200 CODE:
2223 RETVAL = boolSV (coro->flags & ix); 3201 RETVAL = boolSV (coro->flags & ix);
2224 OUTPUT: 3202 OUTPUT:
2225 RETVAL 3203 RETVAL
2226 3204
2227void 3205void
2228throw (Coro::State self, SV *throw = &PL_sv_undef) 3206throw (Coro::State self, SV *throw = &PL_sv_undef)
2229 PROTOTYPE: $;$ 3207 PROTOTYPE: $;$
2230 CODE: 3208 CODE:
3209{
3210 struct coro *current = SvSTATE_current;
3211 SV **throwp = self == current ? &CORO_THROW : &self->except;
2231 SvREFCNT_dec (self->throw); 3212 SvREFCNT_dec (*throwp);
3213 SvGETMAGIC (throw);
2232 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3214 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3215}
2233 3216
2234void 3217void
2235api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3218api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3219 PROTOTYPE: $;$
2236 C_ARGS: aTHX_ coro, flags 3220 C_ARGS: aTHX_ coro, flags
2237 3221
2238SV * 3222SV *
2239has_cctx (Coro::State coro) 3223has_cctx (Coro::State coro)
2240 PROTOTYPE: $ 3224 PROTOTYPE: $
2241 CODE: 3225 CODE:
2242 RETVAL = boolSV (!!coro->cctx); 3226 /* maybe manage the running flag differently */
3227 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2243 OUTPUT: 3228 OUTPUT:
2244 RETVAL 3229 RETVAL
2245 3230
2246int 3231int
2247is_traced (Coro::State coro) 3232is_traced (Coro::State coro)
… …
2265 OUTPUT: 3250 OUTPUT:
2266 RETVAL 3251 RETVAL
2267 3252
2268void 3253void
2269force_cctx () 3254force_cctx ()
3255 PROTOTYPE:
2270 CODE: 3256 CODE:
2271 struct coro *coro = SvSTATE (coro_current);
2272 coro->cctx->idle_sp = 0; 3257 cctx_current->idle_sp = 0;
2273 3258
2274void 3259void
2275swap_defsv (Coro::State self) 3260swap_defsv (Coro::State self)
2276 PROTOTYPE: $ 3261 PROTOTYPE: $
2277 ALIAS: 3262 ALIAS:
2278 swap_defav = 1 3263 swap_defav = 1
2279 CODE: 3264 CODE:
2280 if (!self->slot) 3265 if (!self->slot)
2281 croak ("cannot swap state with coroutine that has no saved state"); 3266 croak ("cannot swap state with coroutine that has no saved state,");
2282 else 3267 else
2283 { 3268 {
2284 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3269 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3270 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286 3271
2287 SV *tmp = *src; *src = *dst; *dst = tmp; 3272 SV *tmp = *src; *src = *dst; *dst = tmp;
2288 } 3273 }
2289 3274
3275void
3276cancel (Coro::State self)
3277 CODE:
3278 coro_state_destroy (aTHX_ self);
3279 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3280
3281
3282SV *
3283enable_times (int enabled = enable_times)
3284 CODE:
3285{
3286 RETVAL = boolSV (enable_times);
3287
3288 if (enabled != enable_times)
3289 {
3290 enable_times = enabled;
3291
3292 coro_times_update ();
3293 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3294 }
3295}
3296 OUTPUT:
3297 RETVAL
3298
3299void
3300times (Coro::State self)
3301 PPCODE:
3302{
3303 struct coro *current = SvSTATE (coro_current);
3304
3305 if (expect_false (current == self))
3306 {
3307 coro_times_update ();
3308 coro_times_add (SvSTATE (coro_current));
3309 }
3310
3311 EXTEND (SP, 2);
3312 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3313 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3314
3315 if (expect_false (current == self))
3316 coro_times_sub (SvSTATE (coro_current));
3317}
3318
2290MODULE = Coro::State PACKAGE = Coro 3319MODULE = Coro::State PACKAGE = Coro
2291 3320
2292BOOT: 3321BOOT:
2293{ 3322{
2294 int i;
2295
2296 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2297 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3323 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2298 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3324 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2299 3325 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3326 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2300 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3327 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2301 SvREADONLY_on (coro_current); 3328 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3329 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3330 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3331 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2302 3332
3333 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3334 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3335 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3336 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3337
2303 coro_stash = gv_stashpv ("Coro", TRUE); 3338 coro_stash = gv_stashpv ("Coro", TRUE);
2304 3339
2305 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3340 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2306 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3341 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2307 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3342 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2308 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3343 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2309 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3344 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2310 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3345 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2311
2312 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2313 coro_ready[i] = newAV ();
2314 3346
2315 { 3347 {
2316 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3348 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2317 3349
2318 coroapi.schedule = api_schedule; 3350 coroapi.schedule = api_schedule;
3351 coroapi.schedule_to = api_schedule_to;
2319 coroapi.cede = api_cede; 3352 coroapi.cede = api_cede;
2320 coroapi.cede_notself = api_cede_notself; 3353 coroapi.cede_notself = api_cede_notself;
2321 coroapi.ready = api_ready; 3354 coroapi.ready = api_ready;
2322 coroapi.is_ready = api_is_ready; 3355 coroapi.is_ready = api_is_ready;
2323 coroapi.nready = coro_nready; 3356 coroapi.nready = coro_nready;
2324 coroapi.current = coro_current; 3357 coroapi.current = coro_current;
2325 3358
2326 GCoroAPI = &coroapi; 3359 /*GCoroAPI = &coroapi;*/
2327 sv_setiv (sv, (IV)&coroapi); 3360 sv_setiv (sv, (IV)&coroapi);
2328 SvREADONLY_on (sv); 3361 SvREADONLY_on (sv);
2329 } 3362 }
2330} 3363}
2331 3364
3365SV *
3366async (...)
3367 PROTOTYPE: &@
3368 CODE:
3369 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3370 api_ready (aTHX_ RETVAL);
3371 OUTPUT:
3372 RETVAL
3373
3374void
3375terminate (...)
3376 CODE:
3377 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3378
2332void 3379void
2333schedule (...) 3380schedule (...)
2334 CODE: 3381 CODE:
2335{ 3382 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336 static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop }; 3383
2337 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3384void
2338} 3385schedule_to (...)
3386 CODE:
3387 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3388
3389void
3390cede_to (...)
3391 CODE:
3392 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2339 3393
2340void 3394void
2341cede (...) 3395cede (...)
2342 CODE: 3396 CODE:
2343{ 3397 CORO_EXECUTE_SLF_XS (slf_init_cede);
2344 static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346}
2347 3398
2348void 3399void
2349cede_notself (...) 3400cede_notself (...)
2350 CODE: 3401 CODE:
2351{ 3402 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352 static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
2353 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2354}
2355 3403
2356void 3404void
2357_set_current (SV *current) 3405_set_current (SV *current)
2358 PROTOTYPE: $ 3406 PROTOTYPE: $
2359 CODE: 3407 CODE:
… …
2362 3410
2363void 3411void
2364_set_readyhook (SV *hook) 3412_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3413 PROTOTYPE: $
2366 CODE: 3414 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3415 SvREFCNT_dec (coro_readyhook);
3416 SvGETMAGIC (hook);
3417 if (SvOK (hook))
3418 {
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3419 coro_readyhook = newSVsv (hook);
2370 UNLOCK; 3420 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3421 }
3422 else
3423 {
3424 coro_readyhook = 0;
3425 CORO_READYHOOK = 0;
3426 }
2371 3427
2372int 3428int
2373prio (Coro::State coro, int newprio = 0) 3429prio (Coro::State coro, int newprio = 0)
3430 PROTOTYPE: $;$
2374 ALIAS: 3431 ALIAS:
2375 nice = 1 3432 nice = 1
2376 CODE: 3433 CODE:
2377{ 3434{
2378 RETVAL = coro->prio; 3435 RETVAL = coro->prio;
… …
2380 if (items > 1) 3437 if (items > 1)
2381 { 3438 {
2382 if (ix) 3439 if (ix)
2383 newprio = coro->prio - newprio; 3440 newprio = coro->prio - newprio;
2384 3441
2385 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3442 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2386 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3443 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2387 3444
2388 coro->prio = newprio; 3445 coro->prio = newprio;
2389 } 3446 }
2390} 3447}
2391 OUTPUT: 3448 OUTPUT:
… …
2405 CODE: 3462 CODE:
2406 RETVAL = coro_nready; 3463 RETVAL = coro_nready;
2407 OUTPUT: 3464 OUTPUT:
2408 RETVAL 3465 RETVAL
2409 3466
2410# for async_pool speedup
2411void 3467void
2412_pool_1 (SV *cb) 3468suspend (Coro::State self)
3469 PROTOTYPE: $
2413 CODE: 3470 CODE:
2414{ 3471 self->flags |= CF_SUSPENDED;
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3472
2422 if (!invoke) 3473void
3474resume (Coro::State self)
3475 PROTOTYPE: $
3476 CODE:
3477 self->flags &= ~CF_SUSPENDED;
3478
3479void
3480_pool_handler (...)
3481 CODE:
3482 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3483
3484void
3485async_pool (SV *cv, ...)
3486 PROTOTYPE: &@
3487 PPCODE:
3488{
3489 HV *hv = (HV *)av_pop (av_async_pool);
3490 AV *av = newAV ();
3491 SV *cb = ST (0);
3492 int i;
3493
3494 av_extend (av, items - 2);
3495 for (i = 1; i < items; ++i)
3496 av_push (av, SvREFCNT_inc_NN (ST (i)));
3497
3498 if ((SV *)hv == &PL_sv_undef)
2423 { 3499 {
2424 SV *old = PL_diehook; 3500 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2425 PL_diehook = 0; 3501 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2426 SvREFCNT_dec (old); 3502 SvREFCNT_dec (sv);
2427 croak ("\3async_pool terminate\2\n");
2428 } 3503 }
2429 3504
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3505 {
2443 av_fill (defav, len - 1); 3506 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3507
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3508 assert (!coro->invoke_cb);
3509 assert (!coro->invoke_av);
3510 coro->invoke_cb = SvREFCNT_inc (cb);
3511 coro->invoke_av = av;
2446 } 3512 }
2447 3513
3514 api_ready (aTHX_ (SV *)hv);
3515
3516 if (GIMME_V != G_VOID)
3517 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3518 else
2448 SvREFCNT_dec (invoke); 3519 SvREFCNT_dec (hv);
2449} 3520}
2450 3521
2451void 3522SV *
2452_pool_2 (SV *cb) 3523rouse_cb ()
3524 PROTOTYPE:
2453 CODE: 3525 CODE:
2454{ 3526 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3527 OUTPUT:
2527 RETVAL 3528 RETVAL
2528 3529
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3530void
2535_get_state (SV *self) 3531rouse_wait (...)
3532 PROTOTYPE: ;$
2536 PPCODE: 3533 PPCODE:
2537{ 3534 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550
2551 av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553 for (i = 0; i <= AvFILLp (defav); ++i)
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556 av_push (av, data_sv);
2557
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560 api_ready (aTHX_ self);
2561}
2562 3535
2563void 3536void
2564_set_state (SV *state) 3537on_enter (SV *block)
3538 ALIAS:
3539 on_leave = 1
2565 PROTOTYPE: $ 3540 PROTOTYPE: &
3541 CODE:
3542{
3543 struct coro *coro = SvSTATE_current;
3544 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3545
3546 block = s_get_cv_croak (block);
3547
3548 if (!*avp)
3549 *avp = newAV ();
3550
3551 av_push (*avp, SvREFCNT_inc (block));
3552
3553 if (!ix)
3554 on_enterleave_call (aTHX_ block);
3555
3556 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3557 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3558 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3559}
3560
3561
3562MODULE = Coro::State PACKAGE = PerlIO::cede
3563
3564BOOT:
3565 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3566
3567
3568MODULE = Coro::State PACKAGE = Coro::Semaphore
3569
3570SV *
3571new (SV *klass, SV *count = 0)
3572 CODE:
3573{
3574 int semcnt = 1;
3575
3576 if (count)
3577 {
3578 SvGETMAGIC (count);
3579
3580 if (SvOK (count))
3581 semcnt = SvIV (count);
3582 }
3583
3584 RETVAL = sv_bless (
3585 coro_waitarray_new (aTHX_ semcnt),
3586 GvSTASH (CvGV (cv))
3587 );
3588}
3589 OUTPUT:
3590 RETVAL
3591
3592# helper for Coro::Channel and others
3593SV *
3594_alloc (int count)
3595 CODE:
3596 RETVAL = coro_waitarray_new (aTHX_ count);
3597 OUTPUT:
3598 RETVAL
3599
3600SV *
3601count (SV *self)
3602 CODE:
3603 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3604 OUTPUT:
3605 RETVAL
3606
3607void
3608up (SV *self, int adjust = 1)
3609 ALIAS:
3610 adjust = 1
3611 CODE:
3612 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3613
3614void
3615down (...)
3616 CODE:
3617 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3618
3619void
3620wait (...)
3621 CODE:
3622 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3623
3624void
3625try (SV *self)
3626 PPCODE:
3627{
3628 AV *av = (AV *)SvRV (self);
3629 SV *count_sv = AvARRAY (av)[0];
3630 IV count = SvIVX (count_sv);
3631
3632 if (count > 0)
3633 {
3634 --count;
3635 SvIVX (count_sv) = count;
3636 XSRETURN_YES;
3637 }
3638 else
3639 XSRETURN_NO;
3640}
3641
3642void
3643waiters (SV *self)
3644 PPCODE:
3645{
3646 AV *av = (AV *)SvRV (self);
3647 int wcount = AvFILLp (av) + 1 - 1;
3648
3649 if (GIMME_V == G_SCALAR)
3650 XPUSHs (sv_2mortal (newSViv (wcount)));
3651 else
3652 {
3653 int i;
3654 EXTEND (SP, wcount);
3655 for (i = 1; i <= wcount; ++i)
3656 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3657 }
3658}
3659
3660MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3661
3662void
3663_may_delete (SV *sem, int count, int extra_refs)
2566 PPCODE: 3664 PPCODE:
2567{ 3665{
2568 AV *av = (AV *)SvRV (state); 3666 AV *av = (AV *)SvRV (sem);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2570 int i;
2571 3667
2572 errno = data->errorno; 3668 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2573 PL_laststype = data->laststype; 3669 && AvFILLp (av) == 0 /* no waiters, just count */
2574 PL_laststatval = data->laststatval; 3670 && SvIV (AvARRAY (av)[0]) == count)
2575 PL_statcache = data->statcache; 3671 XSRETURN_YES;
2576 3672
3673 XSRETURN_NO;
3674}
3675
3676MODULE = Coro::State PACKAGE = Coro::Signal
3677
3678SV *
3679new (SV *klass)
3680 CODE:
3681 RETVAL = sv_bless (
3682 coro_waitarray_new (aTHX_ 0),
3683 GvSTASH (CvGV (cv))
3684 );
3685 OUTPUT:
3686 RETVAL
3687
3688void
3689wait (...)
3690 CODE:
3691 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3692
3693void
3694broadcast (SV *self)
3695 CODE:
3696{
3697 AV *av = (AV *)SvRV (self);
3698 coro_signal_wake (aTHX_ av, AvFILLp (av));
3699}
3700
3701void
3702send (SV *self)
3703 CODE:
3704{
3705 AV *av = (AV *)SvRV (self);
3706
2577 EXTEND (SP, AvFILLp (av)); 3707 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3708 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3709 else
3710 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3711}
3712
3713IV
3714awaited (SV *self)
3715 CODE:
3716 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3717 OUTPUT:
3718 RETVAL
2581 3719
2582 3720
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3721MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3722
2585BOOT: 3723BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3724 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3725
2588SV * 3726void
2589_schedule (...) 3727_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3728 CODE:
2592{ 3729{
2593 static int incede; 3730 static int incede;
2594 3731
2595 api_cede_notself (aTHX); 3732 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3738 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3739 if (coro_nready >= incede)
2603 { 3740 {
2604 PUSHMARK (SP); 3741 PUSHMARK (SP);
2605 PUTBACK; 3742 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3743 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3744 }
2609 3745
2610 --incede; 3746 --incede;
2611} 3747}
2612 3748
2613 3749
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3750MODULE = Coro::State PACKAGE = Coro::AIO
2615 3751
2616BOOT: 3752void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3753_register (char *target, char *proto, SV *req)
3754 CODE:
3755{
3756 SV *req_cv = s_get_cv_croak (req);
3757 /* newXSproto doesn't return the CV on 5.8 */
3758 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3759 sv_setpv ((SV *)slf_cv, proto);
3760 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3761}
2618 3762
3763MODULE = Coro::State PACKAGE = Coro::Select
3764
3765void
3766patch_pp_sselect ()
3767 CODE:
3768 if (!coro_old_pp_sselect)
3769 {
3770 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3771 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3772 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3773 }
3774
3775void
3776unpatch_pp_sselect ()
3777 CODE:
3778 if (coro_old_pp_sselect)
3779 {
3780 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3781 coro_old_pp_sselect = 0;
3782 }
3783
3784

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