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Comparing Coro/Coro/State.xs (file contents):
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC vs.
Revision 1.363 by root, Tue Jul 14 00:55:10 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;
187 129
188struct transfer_args 130static AV *av_destroy; /* destruction queue */
189{ 131static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 132static SV *sv_idle; /* $Coro::idle */
191};
192 133
193static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 136static SV *rv_diehook;
196static SV *rv_warnhook; 137static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
198 139
199/* async_pool helper stuff */ 140/* async_pool helper stuff */
200static SV *sv_pool_rss; 141static SV *sv_pool_rss;
201static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
203 148
204/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
205static SV *sv_activity; 150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
206 157
207static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
208static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
209 160
210enum { 161enum {
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 168};
218 169
219/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 171typedef struct coro_cctx
172{
221 struct coro_cctx *next; 173 struct coro_cctx *next;
222 174
223 /* the stack */ 175 /* the stack */
224 void *sptr; 176 void *sptr;
225 size_t ssize; 177 size_t ssize;
… …
235 int valgrind_id; 187 int valgrind_id;
236#endif 188#endif
237 unsigned char flags; 189 unsigned char flags;
238} coro_cctx; 190} coro_cctx;
239 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
240enum { 196enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
245}; 202};
246 203
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 205typedef struct
206{
249 SV *defsv; 207 SV *defsv;
250 AV *defav; 208 AV *defav;
251 SV *errsv; 209 SV *errsv;
252 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
253#define VAR(name,type) type name; 212#define VAR(name,type) type name;
254# include "state.h" 213# include "state.h"
255#undef VAR 214#undef VAR
256} perl_slots; 215} perl_slots;
257 216
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 218
260/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
261struct coro { 220struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 222 coro_cctx *cctx;
264 223
265 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 229 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
268 231
232 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
273 238
274 /* statistics */ 239 /* statistics */
275 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
276 241
277 /* coro process data */ 242 /* coro process data */
278 int prio; 243 int prio;
279 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
280 246
281 /* async_pool */ 247 /* async_pool */
282 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* times */
257 coro_ts t_cpu, t_real;
283 258
284 /* linked list */ 259 /* linked list */
285 struct coro *next, *prev; 260 struct coro *next, *prev;
286}; 261};
287 262
288typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
290 265
266/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */
269static struct CoroSLF slf_frame; /* the current slf frame */
270
291/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
292 272
293#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
299 279
300/* for Coro.pm */ 280/* for Coro.pm */
301static SV *coro_current; 281static SV *coro_current;
302static SV *coro_readyhook; 282static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
304static int coro_nready; 284static CV *cv_coro_run, *cv_coro_terminate;
305static struct coro *coro_first; 285static struct coro *coro_first;
286#define coro_nready coroapi.nready
306 287
307/** lowlevel stuff **********************************************************/ 288/** lowlevel stuff **********************************************************/
308 289
309static SV * 290static SV *
310coro_get_sv (pTHX_ const char *name, int create) 291coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 315 get_hv (name, create);
335#endif 316#endif
336 return get_hv (name, create); 317 return get_hv (name, create);
337} 318}
338 319
320INLINE void
321coro_times_update ()
322{
323#ifdef coro_clock_gettime
324 struct timespec ts;
325
326 ts.tv_sec = ts.tv_nsec = 0;
327 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
328 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
329
330 ts.tv_sec = ts.tv_nsec = 0;
331 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
332 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
333#else
334 dTHX;
335 UV tv[2];
336
337 u2time (aTHX_ tv);
338 time_real [0] = tv [0];
339 time_real [1] = tv [1] * 1000;
340#endif
341}
342
343INLINE void
344coro_times_add (struct coro *c)
345{
346 c->t_real [1] += time_real [1];
347 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
348 c->t_real [0] += time_real [0];
349
350 c->t_cpu [1] += time_cpu [1];
351 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
352 c->t_cpu [0] += time_cpu [0];
353}
354
355INLINE void
356coro_times_sub (struct coro *c)
357{
358 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
359 c->t_real [1] -= time_real [1];
360 c->t_real [0] -= time_real [0];
361
362 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
363 c->t_cpu [1] -= time_cpu [1];
364 c->t_cpu [0] -= time_cpu [0];
365}
366
367/*****************************************************************************/
368/* magic glue */
369
370#define CORO_MAGIC_type_cv 26
371#define CORO_MAGIC_type_state PERL_MAGIC_ext
372
373#define CORO_MAGIC_NN(sv, type) \
374 (expect_true (SvMAGIC (sv)->mg_type == type) \
375 ? SvMAGIC (sv) \
376 : mg_find (sv, type))
377
378#define CORO_MAGIC(sv, type) \
379 (expect_true (SvMAGIC (sv)) \
380 ? CORO_MAGIC_NN (sv, type) \
381 : 0)
382
383#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
384#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
385
386INLINE struct coro *
387SvSTATE_ (pTHX_ SV *coro)
388{
389 HV *stash;
390 MAGIC *mg;
391
392 if (SvROK (coro))
393 coro = SvRV (coro);
394
395 if (expect_false (SvTYPE (coro) != SVt_PVHV))
396 croak ("Coro::State object required");
397
398 stash = SvSTASH (coro);
399 if (expect_false (stash != coro_stash && stash != coro_state_stash))
400 {
401 /* very slow, but rare, check */
402 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
403 croak ("Coro::State object required");
404 }
405
406 mg = CORO_MAGIC_state (coro);
407 return (struct coro *)mg->mg_ptr;
408}
409
410#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
411
412/* faster than SvSTATE, but expects a coroutine hv */
413#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
414#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
415
416/*****************************************************************************/
417/* padlist management and caching */
418
339static AV * 419static AV *
340coro_clone_padlist (pTHX_ CV *cv) 420coro_derive_padlist (pTHX_ CV *cv)
341{ 421{
342 AV *padlist = CvPADLIST (cv); 422 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 423 AV *newpadlist, *newpad;
344 424
345 newpadlist = newAV (); 425 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 430 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 431#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 432 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 433 --AvFILLp (padlist);
354 434
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 435 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 436 av_store (newpadlist, 1, (SV *)newpad);
357 437
358 return newpadlist; 438 return newpadlist;
359} 439}
360 440
361static void 441static void
362free_padlist (pTHX_ AV *padlist) 442free_padlist (pTHX_ AV *padlist)
363{ 443{
364 /* may be during global destruction */ 444 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 445 if (!IN_DESTRUCT)
366 { 446 {
367 I32 i = AvFILLp (padlist); 447 I32 i = AvFILLp (padlist);
368 while (i >= 0) 448
449 while (i > 0) /* special-case index 0 */
369 { 450 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 451 /* we try to be extra-careful here */
371 if (svp) 452 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 453 I32 j = AvFILLp (av);
373 SV *sv; 454
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 455 while (j >= 0)
456 SvREFCNT_dec (AvARRAY (av)[j--]);
457
458 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 459 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 460 }
380 461
462 SvREFCNT_dec (AvARRAY (padlist)[0]);
463
464 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 465 SvREFCNT_dec ((SV*)padlist);
382 } 466 }
383} 467}
384 468
385static int 469static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 470coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 471{
388 AV *padlist; 472 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 473 AV *av = (AV *)mg->mg_obj;
474
475 /* perl manages to free our internal AV and _then_ call us */
476 if (IN_DESTRUCT)
477 return 0;
390 478
391 /* casting is fun. */ 479 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 480 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 481 free_padlist (aTHX_ padlist);
394 482
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 483 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 484
397 return 0; 485 return 0;
398} 486}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 487
403static MGVTBL coro_cv_vtbl = { 488static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 489 0, 0, 0, 0,
405 coro_cv_free 490 coro_cv_free
406}; 491};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 492
444/* the next two functions merely cache the padlists */ 493/* the next two functions merely cache the padlists */
445static void 494static void
446get_padlist (pTHX_ CV *cv) 495get_padlist (pTHX_ CV *cv)
447{ 496{
… …
453 else 502 else
454 { 503 {
455#if CORO_PREFER_PERL_FUNCTIONS 504#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 505 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 506 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 507 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 508 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 509 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 510 SvREFCNT_dec (cp);
462#else 511#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 512 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 513#endif
465 } 514 }
466} 515}
467 516
468static void 517static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 524 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 525
477 av = (AV *)mg->mg_obj; 526 av = (AV *)mg->mg_obj;
478 527
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 528 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 529 av_extend (av, AvFILLp (av) + 1);
481 530
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 531 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 532}
484 533
485/** load & save, init *******************************************************/ 534/** load & save, init *******************************************************/
535
536static void
537on_enterleave_call (pTHX_ SV *cb);
486 538
487static void 539static void
488load_perl (pTHX_ Coro__State c) 540load_perl (pTHX_ Coro__State c)
489{ 541{
490 perl_slots *slot = c->slot; 542 perl_slots *slot = c->slot;
491 c->slot = 0; 543 c->slot = 0;
492 544
493 PL_mainstack = c->mainstack; 545 PL_mainstack = c->mainstack;
494 546
495 GvSV (PL_defgv) = slot->defsv; 547 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 548 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 549 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 550 GvSV (irsgv) = slot->irsgv;
551 GvHV (PL_hintgv) = slot->hinthv;
499 552
500 #define VAR(name,type) PL_ ## name = slot->name; 553 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 554 # include "state.h"
502 #undef VAR 555 #undef VAR
503 556
… …
514 CvPADLIST (cv) = (AV *)POPs; 567 CvPADLIST (cv) = (AV *)POPs;
515 } 568 }
516 569
517 PUTBACK; 570 PUTBACK;
518 } 571 }
572
573 slf_frame = c->slf_frame;
574 CORO_THROW = c->except;
575
576 if (expect_false (enable_times))
577 {
578 if (expect_false (!times_valid))
579 coro_times_update ();
580
581 coro_times_sub (c);
582 }
583
584 if (expect_false (c->on_enter))
585 {
586 int i;
587
588 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
589 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
590 }
519} 591}
520 592
521static void 593static void
522save_perl (pTHX_ Coro__State c) 594save_perl (pTHX_ Coro__State c)
523{ 595{
596 if (expect_false (c->on_leave))
597 {
598 int i;
599
600 for (i = AvFILLp (c->on_leave); i >= 0; --i)
601 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
602 }
603
604 times_valid = 0;
605
606 if (expect_false (enable_times))
607 {
608 coro_times_update (); times_valid = 1;
609 coro_times_add (c);
610 }
611
612 c->except = CORO_THROW;
613 c->slf_frame = slf_frame;
614
524 { 615 {
525 dSP; 616 dSP;
526 I32 cxix = cxstack_ix; 617 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 618 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 619 PERL_SI *top_si = PL_curstackinfo;
… …
538 { 629 {
539 while (expect_true (cxix >= 0)) 630 while (expect_true (cxix >= 0))
540 { 631 {
541 PERL_CONTEXT *cx = &ccstk[cxix--]; 632 PERL_CONTEXT *cx = &ccstk[cxix--];
542 633
543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 634 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
544 { 635 {
545 CV *cv = cx->blk_sub.cv; 636 CV *cv = cx->blk_sub.cv;
546 637
547 if (expect_true (CvDEPTH (cv))) 638 if (expect_true (CvDEPTH (cv)))
548 { 639 {
… …
572 /* we manually unroll here, as usually 2 slots is enough */ 663 /* we manually unroll here, as usually 2 slots is enough */
573 if (SLOT_COUNT >= 1) CXINC; 664 if (SLOT_COUNT >= 1) CXINC;
574 if (SLOT_COUNT >= 2) CXINC; 665 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC; 666 if (SLOT_COUNT >= 3) CXINC;
576 { 667 {
577 int i; 668 unsigned int i;
578 for (i = 3; i < SLOT_COUNT; ++i) 669 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC; 670 CXINC;
580 } 671 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 672 cxstack_ix -= SLOT_COUNT; /* undo allocation */
582 673
583 c->mainstack = PL_mainstack; 674 c->mainstack = PL_mainstack;
584 675
585 { 676 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 677 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 678
588 slot->defav = GvAV (PL_defgv); 679 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 680 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 681 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 682 slot->irsgv = GvSV (irsgv);
683 slot->hinthv = GvHV (PL_hintgv);
592 684
593 #define VAR(name,type) slot->name = PL_ ## name; 685 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 686 # include "state.h"
595 #undef VAR 687 #undef VAR
596 } 688 }
597} 689}
598 690
599/* 691/*
600 * allocate various perl stacks. This is an exact copy 692 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 693 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 694 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 695 * not usually need a lot of stackspace.
604 */ 696 */
605#if CORO_PREFER_PERL_FUNCTIONS 697#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 698# define coro_init_stacks(thx) init_stacks ()
607#else 699#else
608static void 700static void
609coro_init_stacks (pTHX) 701coro_init_stacks (pTHX)
610{ 702{
611 PL_curstackinfo = new_stackinfo(32, 8); 703 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 766#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 767 Safefree (PL_retstack);
676#endif 768#endif
677} 769}
678 770
771#define CORO_RSS \
772 rss += sizeof (SYM (curstackinfo)); \
773 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
774 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
775 rss += SYM (tmps_max) * sizeof (SV *); \
776 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
777 rss += SYM (scopestack_max) * sizeof (I32); \
778 rss += SYM (savestack_max) * sizeof (ANY);
779
679static size_t 780static size_t
680coro_rss (pTHX_ struct coro *coro) 781coro_rss (pTHX_ struct coro *coro)
681{ 782{
682 size_t rss = sizeof (*coro); 783 size_t rss = sizeof (*coro);
683 784
684 if (coro->mainstack) 785 if (coro->mainstack)
685 { 786 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 787 if (coro->flags & CF_RUNNING)
690 { 788 {
691 slot = &tmp_slot; 789 #define SYM(sym) PL_ ## sym
692 790 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 791 #undef SYM
696 } 792 }
697 else 793 else
698 slot = coro->slot;
699
700 if (slot)
701 { 794 {
702 rss += sizeof (slot->curstackinfo); 795 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 796 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 797 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 798 }
714 } 799 }
715 800
716 return rss; 801 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 802}
745 803
746/** coroutine stack handling ************************************************/ 804/** coroutine stack handling ************************************************/
747 805
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 806static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 815#endif
758 816
759/* 817/*
760 * This overrides the default magic get method of %SIG elements. 818 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 819 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide 820 * and instead of trying to save and restore the hash elements, we just provide
763 * readback here. 821 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */ 822 */
768static int 823static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 824coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 825{
771 const char *s = MgPV_nolen_const (mg); 826 const char *s = MgPV_nolen_const (mg);
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 879 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 880
826 if (svp) 881 if (svp)
827 { 882 {
828 SV *old = *svp; 883 SV *old = *svp;
829 *svp = newSVsv (sv); 884 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 885 SvREFCNT_dec (old);
831 return 0; 886 return 0;
832 } 887 }
833 } 888 }
834 889
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 890 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 891}
837 892
838static void 893static void
894prepare_nop (pTHX_ struct coro_transfer_args *ta)
895{
896 /* kind of mega-hacky, but works */
897 ta->next = ta->prev = (struct coro *)ta;
898}
899
900static int
901slf_check_nop (pTHX_ struct CoroSLF *frame)
902{
903 return 0;
904}
905
906static int
907slf_check_repeat (pTHX_ struct CoroSLF *frame)
908{
909 return 1;
910}
911
912static UNOP coro_setup_op;
913
914static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 915coro_setup (pTHX_ struct coro *coro)
840{ 916{
841 /* 917 /*
842 * emulate part of the perl startup here. 918 * emulate part of the perl startup here.
843 */ 919 */
… …
845 921
846 PL_runops = RUNOPS_DEFAULT; 922 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 923 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 924 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 925 PL_comppad = 0;
926 PL_comppad_name = 0;
927 PL_comppad_name_fill = 0;
928 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 929 PL_curpm = 0;
851 PL_curpad = 0; 930 PL_curpad = 0;
852 PL_localizing = 0; 931 PL_localizing = 0;
853 PL_dirty = 0; 932 PL_dirty = 0;
854 PL_restartop = 0; 933 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 934#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 935 PL_parser = 0;
857#endif 936#endif
937 PL_hints = 0;
858 938
859 /* recreate the die/warn hooks */ 939 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 940 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 941 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862 942
863 GvSV (PL_defgv) = newSV (0); 943 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 944 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 945 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 946 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
947 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 948 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 949 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 950
870 { 951 {
871 dSP; 952 dSP;
872 UNOP myop; 953 UNOP myop;
873 954
874 Zero (&myop, 1, UNOP); 955 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 956 myop.op_next = Nullop;
957 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 958 myop.op_flags = OPf_WANT_VOID;
877 959
878 PUSHMARK (SP); 960 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 961 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 962 PUTBACK;
881 PL_op = (OP *)&myop; 963 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 964 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 965 }
885 966
886 /* this newly created coroutine might be run on an existing cctx which most 967 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 968 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 969 */
890 SLF_HEAD; 970 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 971 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
892 972
973 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
974 coro_setup_op.op_next = PL_op;
975 coro_setup_op.op_type = OP_ENTERSUB;
976 coro_setup_op.op_ppaddr = pp_slf;
977 /* no flags etc. required, as an init function won't be called */
978
979 PL_op = (OP *)&coro_setup_op;
980
981 /* copy throw, in case it was set before coro_setup */
982 CORO_THROW = coro->except;
983
984 if (expect_false (enable_times))
985 {
986 coro_times_update ();
987 coro_times_sub (coro);
988 }
989}
990
893static void 991static void
894coro_destruct (pTHX_ struct coro *coro) 992coro_unwind_stacks (pTHX)
895{ 993{
896 if (!IN_DESTRUCT) 994 if (!IN_DESTRUCT)
897 { 995 {
898 /* restore all saved variables and stuff */ 996 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 997 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1005 POPSTACK_TO (PL_mainstack);
908 1006
909 /* unwind main stack */ 1007 /* unwind main stack */
910 dounwind (-1); 1008 dounwind (-1);
911 } 1009 }
1010}
912 1011
913 SvREFCNT_dec (GvSV (PL_defgv)); 1012static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1013coro_destruct_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1014{
916 SvREFCNT_dec (PL_defoutgv); 1015 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1016
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1017 {
1018 struct coro *current = SvSTATE_current;
1019
1020 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1021
1022 save_perl (aTHX_ current);
1023 load_perl (aTHX_ coro);
1024
1025 coro_unwind_stacks (aTHX);
1026 coro_destruct_stacks (aTHX);
1027
1028 // now save some sv's to be free'd later
1029 svf [0] = GvSV (PL_defgv);
1030 svf [1] = (SV *)GvAV (PL_defgv);
1031 svf [2] = GvSV (PL_errgv);
1032 svf [3] = (SV *)PL_defoutgv;
1033 svf [4] = PL_rs;
1034 svf [5] = GvSV (irsgv);
1035 svf [6] = (SV *)GvHV (PL_hintgv);
1036 svf [7] = PL_diehook;
1037 svf [8] = PL_warnhook;
1038 assert (9 == sizeof (svf) / sizeof (*svf));
1039
1040 load_perl (aTHX_ current);
1041 }
1042
1043 {
1044 unsigned int i;
1045
1046 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1047 SvREFCNT_dec (svf [i]);
1048
923 SvREFCNT_dec (coro->saved_deffh); 1049 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 1050 SvREFCNT_dec (coro->rouse_cb);
925 1051 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1052 SvREFCNT_dec (coro->invoke_av);
1053 }
927} 1054}
928 1055
929INLINE void 1056INLINE void
930free_coro_mortal (pTHX) 1057free_coro_mortal (pTHX)
931{ 1058{
… …
939static int 1066static int
940runops_trace (pTHX) 1067runops_trace (pTHX)
941{ 1068{
942 COP *oldcop = 0; 1069 COP *oldcop = 0;
943 int oldcxix = -2; 1070 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1071
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1072 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1073 {
949 PERL_ASYNC_CHECK (); 1074 PERL_ASYNC_CHECK ();
950 1075
951 if (cctx->flags & CC_TRACE_ALL) 1076 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1077 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1078 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1079 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1080 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1081 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1082 AV *av = newAV (); /* return values */
958 SV **cb; 1083 SV **cb;
… …
995 1120
996 if (PL_curcop != &PL_compiling) 1121 if (PL_curcop != &PL_compiling)
997 { 1122 {
998 SV **cb; 1123 SV **cb;
999 1124
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1125 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1126 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1127 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1128
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1129 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1130 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1131 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1132 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1133 SV *fullname = sv_2mortal (newSV (0));
1010 1134
1011 if (isGV (gv)) 1135 if (isGV (gv))
… …
1016 SAVETMPS; 1140 SAVETMPS;
1017 EXTEND (SP, 3); 1141 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1142 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1143 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1144 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1145 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1146 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1147 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1148 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1149 SPAGAIN;
1026 FREETMPS; 1150 FREETMPS;
… …
1029 } 1153 }
1030 1154
1031 oldcxix = cxstack_ix; 1155 oldcxix = cxstack_ix;
1032 } 1156 }
1033 1157
1034 if (cctx->flags & CC_TRACE_LINE) 1158 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1159 {
1036 dSP; 1160 dSP;
1037 1161
1038 PL_runops = RUNOPS_DEFAULT; 1162 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1163 ENTER;
… …
1058 1182
1059 TAINT_NOT; 1183 TAINT_NOT;
1060 return 0; 1184 return 0;
1061} 1185}
1062 1186
1187static struct CoroSLF cctx_ssl_frame;
1188
1063static void 1189static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1190slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1191{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1192 ta->prev = 0;
1068} 1193}
1069 1194
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1195static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1196slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1197{
1073/* also initialises PL_top_env */ 1198 *frame = cctx_ssl_frame;
1199
1200 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1201}
1202
1203/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1204static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1205cctx_prepare (pTHX)
1076{ 1206{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1207 PL_top_env = &PL_start_env;
1081 1208
1082 if (cctx->flags & CC_TRACE) 1209 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1210 PL_runops = runops_trace;
1084 1211
1085 Zero (&myop, 1, UNOP); 1212 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1213 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1214 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1215 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1216
1089 PUSHMARK (SP); 1217 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1218 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1219
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1220 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1221 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1222}
1098 1223
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1224/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1225INLINE void
1101transfer_tail (pTHX) 1226transfer_tail (pTHX)
1102{ 1227{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1228 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1229}
1119 1230
1120/* 1231/*
1121 * this is a _very_ stripped down perl interpreter ;) 1232 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1233 */
… …
1129# endif 1240# endif
1130#endif 1241#endif
1131 { 1242 {
1132 dTHX; 1243 dTHX;
1133 1244
1134 /* we are the alternative tail to pp_set_stacklevel */ 1245 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1246 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1247 /* PL_nop = PL_nop->op_next */
1140 1248
1141 /* inject a fake subroutine call to cctx_init */ 1249 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1250 cctx_prepare (aTHX);
1143 1251
1144 /* cctx_run is the alternative tail of transfer() */ 1252 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1253 transfer_tail (aTHX);
1146 1254
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1255 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1256 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1257 perl_run (PL_curinterp);
1258 /*
1259 * Unfortunately, there is no way to get at the return values of the
1260 * coro body here, as perl_run destroys these
1261 */
1150 1262
1151 /* 1263 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1264 * 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) 1265 * 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 1266 * 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" 1267 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1268 * coroutine as Coro has no such concept.
1269 * This actually isn't valid with the pthread backend, but OSes requiring
1270 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1271 */
1158 PL_top_env = main_top_env; 1272 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1273 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1274 }
1161} 1275}
… …
1238cctx_destroy (coro_cctx *cctx) 1352cctx_destroy (coro_cctx *cctx)
1239{ 1353{
1240 if (!cctx) 1354 if (!cctx)
1241 return; 1355 return;
1242 1356
1357 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1358
1243 --cctx_count; 1359 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1360 coro_destroy (&cctx->cctx);
1245 1361
1246 /* coro_transfer creates new, empty cctx's */ 1362 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1363 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1421/** coroutine switching *****************************************************/
1306 1422
1307static void 1423static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1424transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1425{
1426 /* TODO: throwing up here is considered harmful */
1427
1310 if (expect_true (prev != next)) 1428 if (expect_true (prev != next))
1311 { 1429 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1430 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"); 1431 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1432
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)) 1433 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"); 1434 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1320 1435
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1436#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1437 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"); 1438 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1439#endif
1325 } 1440 }
1326} 1441}
1327 1442
1328/* always use the TRANSFER macro */ 1443/* always use the TRANSFER macro */
1329static void NOINLINE 1444static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1445transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1446{
1332 dSTACKLEVEL; 1447 dSTACKLEVEL;
1333 1448
1334 /* sometimes transfer is only called to set idle_sp */ 1449 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1450 if (expect_false (!prev))
1336 { 1451 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1452 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1453 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1454 }
1340 else if (expect_true (prev != next)) 1455 else if (expect_true (prev != next))
1341 { 1456 {
1342 coro_cctx *prev__cctx; 1457 coro_cctx *cctx_prev;
1343 1458
1344 if (expect_false (prev->flags & CF_NEW)) 1459 if (expect_false (prev->flags & CF_NEW))
1345 { 1460 {
1346 /* create a new empty/source context */ 1461 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1462 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1463 prev->flags |= CF_RUNNING;
1350 } 1464 }
1351 1465
1352 prev->flags &= ~CF_RUNNING; 1466 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1467 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1468
1357 /* first get rid of the old state */ 1469 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1470 save_perl (aTHX_ prev);
1359 1471
1360 if (expect_false (next->flags & CF_NEW)) 1472 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1477 coro_setup (aTHX_ next);
1366 } 1478 }
1367 else 1479 else
1368 load_perl (aTHX_ next); 1480 load_perl (aTHX_ next);
1369 1481
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1482 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1483 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1484 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1485 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1486 && !force_cctx
1377 )) 1487 ))
1378 { 1488 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1489 /* 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)); 1490 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1491
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 */ 1492 /* 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 */ 1493 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1494 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1495 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1496 next->cctx = cctx_get (aTHX);
1389 1497
1390 cctx_put (prev__cctx); 1498 cctx_put (cctx_current);
1391 } 1499 }
1500 else
1501 prev->cctx = cctx_current;
1392 1502
1393 ++next->usecount; 1503 ++next->usecount;
1394 1504
1395 if (expect_true (!next->cctx)) 1505 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1506 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1507
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1508 next->cctx = 0;
1399 transfer_next = next;
1400 1509
1401 if (expect_false (prev__cctx != next->cctx)) 1510 if (expect_false (cctx_prev != cctx_current))
1402 { 1511 {
1403 prev__cctx->top_env = PL_top_env; 1512 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1513 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1514 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1515 }
1407 1516
1408 transfer_tail (aTHX); 1517 transfer_tail (aTHX);
1409 } 1518 }
1410} 1519}
… …
1417static int 1526static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1527coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1528{
1420 if (coro->flags & CF_DESTROYED) 1529 if (coro->flags & CF_DESTROYED)
1421 return 0; 1530 return 0;
1531
1532 if (coro->on_destroy && !PL_dirty)
1533 coro->on_destroy (aTHX_ coro);
1422 1534
1423 coro->flags |= CF_DESTROYED; 1535 coro->flags |= CF_DESTROYED;
1424 1536
1425 if (coro->flags & CF_READY) 1537 if (coro->flags & CF_READY)
1426 { 1538 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1539 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1540 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1541 --coro_nready;
1431 UNLOCK;
1432 } 1542 }
1433 else 1543 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1544 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1545
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1546 if (coro->mainstack
1437 { 1547 && coro->mainstack != main_mainstack
1438 struct coro temp; 1548 && coro->slot
1439 1549 && !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); 1550 coro_destruct_perl (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452 1551
1453 cctx_destroy (coro->cctx); 1552 cctx_destroy (coro->cctx);
1553 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1554 SvREFCNT_dec (coro->args);
1555 SvREFCNT_dec (CORO_THROW);
1455 1556
1456 if (coro->next) coro->next->prev = coro->prev; 1557 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1558 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1559 if (coro == coro_first) coro_first = coro->next;
1459 1560
… …
1497# define MGf_DUP 0 1598# define MGf_DUP 0
1498#endif 1599#endif
1499}; 1600};
1500 1601
1501static void 1602static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1603prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1604{
1504 ta->prev = SvSTATE (prev_sv); 1605 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1606 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1607 TRANSFER_CHECK (*ta);
1507} 1608}
1508 1609
1509static void 1610static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1611api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1612{
1512 dTHX;
1513 struct transfer_args ta; 1613 struct coro_transfer_args ta;
1514 1614
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1615 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1616 TRANSFER (ta, 1);
1517} 1617}
1518 1618
1519/** Coro ********************************************************************/ 1619/** Coro ********************************************************************/
1520 1620
1521static void 1621INLINE void
1522coro_enq (pTHX_ SV *coro_sv) 1622coro_enq (pTHX_ struct coro *coro)
1523{ 1623{
1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1624 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1525}
1526 1625
1527static SV * 1626 SvREFCNT_inc_NN (coro->hv);
1627
1628 coro->next_ready = 0;
1629 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1630 ready [1] = coro;
1631}
1632
1633INLINE struct coro *
1528coro_deq (pTHX) 1634coro_deq (pTHX)
1529{ 1635{
1530 int prio; 1636 int prio;
1531 1637
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1638 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1533 if (AvFILLp (coro_ready [prio]) >= 0) 1639 {
1534 return av_shift (coro_ready [prio]); 1640 struct coro **ready = coro_ready [prio];
1641
1642 if (ready [0])
1643 {
1644 struct coro *coro = ready [0];
1645 ready [0] = coro->next_ready;
1646 return coro;
1647 }
1648 }
1535 1649
1536 return 0; 1650 return 0;
1537} 1651}
1538 1652
1539static int 1653static int
1540api_ready (SV *coro_sv) 1654api_ready (pTHX_ SV *coro_sv)
1541{ 1655{
1542 dTHX;
1543 struct coro *coro; 1656 struct coro *coro;
1544 SV *sv_hook; 1657 SV *sv_hook;
1545 void (*xs_hook)(void); 1658 void (*xs_hook)(void);
1546 1659
1547 if (SvROK (coro_sv))
1548 coro_sv = SvRV (coro_sv);
1549
1550 coro = SvSTATE (coro_sv); 1660 coro = SvSTATE (coro_sv);
1551 1661
1552 if (coro->flags & CF_READY) 1662 if (coro->flags & CF_READY)
1553 return 0; 1663 return 0;
1554 1664
1555 coro->flags |= CF_READY; 1665 coro->flags |= CF_READY;
1556 1666
1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1667 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1668 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561 1669
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1670 coro_enq (aTHX_ coro);
1563 ++coro_nready; 1671 ++coro_nready;
1564 1672
1565 UNLOCK;
1566
1567 if (sv_hook) 1673 if (sv_hook)
1568 { 1674 {
1569 dSP; 1675 dSP;
1570 1676
1571 ENTER; 1677 ENTER;
1572 SAVETMPS; 1678 SAVETMPS;
1573 1679
1574 PUSHMARK (SP); 1680 PUSHMARK (SP);
1575 PUTBACK; 1681 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD); 1682 call_sv (sv_hook, G_VOID | G_DISCARD);
1577 SPAGAIN;
1578 1683
1579 FREETMPS; 1684 FREETMPS;
1580 LEAVE; 1685 LEAVE;
1581 } 1686 }
1582 1687
… …
1585 1690
1586 return 1; 1691 return 1;
1587} 1692}
1588 1693
1589static int 1694static int
1590api_is_ready (SV *coro_sv) 1695api_is_ready (pTHX_ SV *coro_sv)
1591{ 1696{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1697 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1698}
1596 1699
1700/* expects to own a reference to next->hv */
1597INLINE void 1701INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1702prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1703{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX);
1606
1607 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv))
1609 {
1610 dSP;
1611 UNLOCK;
1612
1613 ENTER;
1614 SAVETMPS;
1615
1616 PUSHMARK (SP);
1617 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1619 SPAGAIN;
1620
1621 FREETMPS;
1622 LEAVE;
1623 continue;
1624 }
1625
1626 ta->next = SvSTATE (next_sv);
1627
1628 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */
1634 continue;
1635 }
1636
1637 --coro_nready;
1638 UNLOCK;
1639 break;
1640 }
1641
1642 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current); 1704 SV *prev_sv = SvRV (coro_current);
1705
1644 ta->prev = SvSTATE (prev_sv); 1706 ta->prev = SvSTATE_hv (prev_sv);
1707 ta->next = next;
1708
1645 TRANSFER_CHECK (*ta); 1709 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1710
1647 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1711 SvRV_set (coro_current, (SV *)next->hv);
1649 1712
1650 LOCK;
1651 free_coro_mortal (aTHX); 1713 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1714 coro_mortal = prev_sv;
1653 UNLOCK; 1715}
1716
1717static void
1718prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1719{
1720 for (;;)
1721 {
1722 struct coro *next = coro_deq (aTHX);
1723
1724 if (expect_true (next))
1725 {
1726 /* cannot transfer to destroyed coros, skip and look for next */
1727 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1728 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1729 else
1730 {
1731 next->flags &= ~CF_READY;
1732 --coro_nready;
1733
1734 prepare_schedule_to (aTHX_ ta, next);
1735 break;
1736 }
1737 }
1738 else
1739 {
1740 /* nothing to schedule: call the idle handler */
1741 if (SvROK (sv_idle)
1742 && SvOBJECT (SvRV (sv_idle)))
1743 {
1744 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1745 api_ready (aTHX_ SvRV (sv_idle));
1746 --coro_nready;
1747 }
1748 else
1749 {
1750 dSP;
1751
1752 ENTER;
1753 SAVETMPS;
1754
1755 PUSHMARK (SP);
1756 PUTBACK;
1757 call_sv (sv_idle, G_VOID | G_DISCARD);
1758
1759 FREETMPS;
1760 LEAVE;
1761 }
1762 }
1763 }
1654} 1764}
1655 1765
1656INLINE void 1766INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1767prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1768{
1659 api_ready (coro_current); 1769 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1770 prepare_schedule (aTHX_ ta);
1661} 1771}
1662 1772
1663static void 1773INLINE void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1774prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1775{
1666 SV *prev = SvRV (coro_current); 1776 SV *prev = SvRV (coro_current);
1667 1777
1668 if (coro_nready) 1778 if (coro_nready)
1669 { 1779 {
1670 prepare_schedule (aTHX_ ta); 1780 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1781 api_ready (aTHX_ prev);
1672 } 1782 }
1673 else 1783 else
1674 ta->prev = ta->next = SvSTATE (prev); 1784 prepare_nop (aTHX_ ta);
1675} 1785}
1676 1786
1677static void 1787static void
1678api_schedule (void) 1788api_schedule (pTHX)
1679{ 1789{
1680 dTHX;
1681 struct transfer_args ta; 1790 struct coro_transfer_args ta;
1682 1791
1683 prepare_schedule (aTHX_ &ta); 1792 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1793 TRANSFER (ta, 1);
1685} 1794}
1686 1795
1796static void
1797api_schedule_to (pTHX_ SV *coro_sv)
1798{
1799 struct coro_transfer_args ta;
1800 struct coro *next = SvSTATE (coro_sv);
1801
1802 SvREFCNT_inc_NN (coro_sv);
1803 prepare_schedule_to (aTHX_ &ta, next);
1804}
1805
1687static int 1806static int
1688api_cede (void) 1807api_cede (pTHX)
1689{ 1808{
1690 dTHX;
1691 struct transfer_args ta; 1809 struct coro_transfer_args ta;
1692 1810
1693 prepare_cede (aTHX_ &ta); 1811 prepare_cede (aTHX_ &ta);
1694 1812
1695 if (expect_true (ta.prev != ta.next)) 1813 if (expect_true (ta.prev != ta.next))
1696 { 1814 {
… …
1700 else 1818 else
1701 return 0; 1819 return 0;
1702} 1820}
1703 1821
1704static int 1822static int
1705api_cede_notself (void) 1823api_cede_notself (pTHX)
1706{ 1824{
1707 if (coro_nready) 1825 if (coro_nready)
1708 { 1826 {
1709 dTHX;
1710 struct transfer_args ta; 1827 struct coro_transfer_args ta;
1711 1828
1712 prepare_cede_notself (aTHX_ &ta); 1829 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 1830 TRANSFER (ta, 1);
1714 return 1; 1831 return 1;
1715 } 1832 }
1716 else 1833 else
1717 return 0; 1834 return 0;
1718} 1835}
1719 1836
1720static void 1837static void
1721api_trace (SV *coro_sv, int flags) 1838api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 1839{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 1840 struct coro *coro = SvSTATE (coro_sv);
1841
1842 if (coro->flags & CF_RUNNING)
1843 croak ("cannot enable tracing on a running coroutine, caught");
1725 1844
1726 if (flags & CC_TRACE) 1845 if (flags & CC_TRACE)
1727 { 1846 {
1728 if (!coro->cctx) 1847 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 1848 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 1849 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 1850 croak ("cannot enable tracing on coroutine with custom stack, caught");
1732 1851
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1852 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 1853 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1854 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 1855 {
… …
1741 else 1860 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 1861 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 1862 }
1744} 1863}
1745 1864
1746#if 0 1865static void
1866coro_call_on_destroy (pTHX_ struct coro *coro)
1867{
1868 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1869 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1870
1871 if (on_destroyp)
1872 {
1873 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1874
1875 while (AvFILLp (on_destroy) >= 0)
1876 {
1877 dSP; /* don't disturb outer sp */
1878 SV *cb = av_pop (on_destroy);
1879
1880 PUSHMARK (SP);
1881
1882 if (statusp)
1883 {
1884 int i;
1885 AV *status = (AV *)SvRV (*statusp);
1886 EXTEND (SP, AvFILLp (status) + 1);
1887
1888 for (i = 0; i <= AvFILLp (status); ++i)
1889 PUSHs (AvARRAY (status)[i]);
1890 }
1891
1892 PUTBACK;
1893 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1894 }
1895 }
1896}
1897
1898static void
1899slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1900{
1901 int i;
1902 HV *hv = (HV *)SvRV (coro_current);
1903 AV *av = newAV ();
1904
1905 av_extend (av, items - 1);
1906 for (i = 0; i < items; ++i)
1907 av_push (av, SvREFCNT_inc_NN (arg [i]));
1908
1909 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1910
1911 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1912 api_ready (aTHX_ sv_manager);
1913
1914 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_repeat;
1916
1917 /* as a minor optimisation, we could unwind all stacks here */
1918 /* but that puts extra pressure on pp_slf, and is not worth much */
1919 /*coro_unwind_stacks (aTHX);*/
1920}
1921
1922/*****************************************************************************/
1923/* async pool handler */
1924
1747static int 1925static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1926slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1749{ 1927{
1750 AV *padlist; 1928 HV *hv = (HV *)SvRV (coro_current);
1751 AV *av = (AV *)mg->mg_obj; 1929 struct coro *coro = (struct coro *)frame->data;
1752 1930
1753 abort (); 1931 if (!coro->invoke_cb)
1932 return 1; /* loop till we have invoke */
1933 else
1934 {
1935 hv_store (hv, "desc", sizeof ("desc") - 1,
1936 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1937
1938 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1939
1940 {
1941 dSP;
1942 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1943 PUTBACK;
1944 }
1945
1946 SvREFCNT_dec (GvAV (PL_defgv));
1947 GvAV (PL_defgv) = coro->invoke_av;
1948 coro->invoke_av = 0;
1949
1950 return 0;
1951 }
1952}
1953
1954static void
1955slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1956{
1957 HV *hv = (HV *)SvRV (coro_current);
1958 struct coro *coro = SvSTATE_hv ((SV *)hv);
1959
1960 if (expect_true (coro->saved_deffh))
1961 {
1962 /* subsequent iteration */
1963 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1964 coro->saved_deffh = 0;
1965
1966 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1967 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1968 {
1969 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1970 coro->invoke_av = newAV ();
1971
1972 frame->prepare = prepare_nop;
1973 }
1974 else
1975 {
1976 av_clear (GvAV (PL_defgv));
1977 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1978
1979 coro->prio = 0;
1980
1981 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1982 api_trace (aTHX_ coro_current, 0);
1983
1984 frame->prepare = prepare_schedule;
1985 av_push (av_async_pool, SvREFCNT_inc (hv));
1986 }
1987 }
1988 else
1989 {
1990 /* first iteration, simply fall through */
1991 frame->prepare = prepare_nop;
1992 }
1993
1994 frame->check = slf_check_pool_handler;
1995 frame->data = (void *)coro;
1996}
1997
1998/*****************************************************************************/
1999/* rouse callback */
2000
2001#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2002
2003static void
2004coro_rouse_callback (pTHX_ CV *cv)
2005{
2006 dXSARGS;
2007 SV *data = (SV *)S_GENSUB_ARG;
2008
2009 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2010 {
2011 /* first call, set args */
2012 SV *coro = SvRV (data);
2013 AV *av = newAV ();
2014
2015 SvRV_set (data, (SV *)av);
2016
2017 /* better take a full copy of the arguments */
2018 while (items--)
2019 av_store (av, items, newSVsv (ST (items)));
2020
2021 api_ready (aTHX_ coro);
2022 SvREFCNT_dec (coro);
2023 }
2024
2025 XSRETURN_EMPTY;
2026}
2027
2028static int
2029slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2030{
2031 SV *data = (SV *)frame->data;
2032
2033 if (CORO_THROW)
2034 return 0;
2035
2036 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2037 return 1;
2038
2039 /* now push all results on the stack */
2040 {
2041 dSP;
2042 AV *av = (AV *)SvRV (data);
2043 int i;
2044
2045 EXTEND (SP, AvFILLp (av) + 1);
2046 for (i = 0; i <= AvFILLp (av); ++i)
2047 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2048
2049 /* we have stolen the elements, so set length to zero and free */
2050 AvFILLp (av) = -1;
2051 av_undef (av);
2052
2053 PUTBACK;
2054 }
1754 2055
1755 return 0; 2056 return 0;
1756} 2057}
1757 2058
1758static MGVTBL coro_gensub_vtbl = { 2059static void
1759 0, 0, 0, 0, 2060slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 2061{
1761}; 2062 SV *cb;
1762#endif 2063
2064 if (items)
2065 cb = arg [0];
2066 else
2067 {
2068 struct coro *coro = SvSTATE_current;
2069
2070 if (!coro->rouse_cb)
2071 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2072
2073 cb = sv_2mortal (coro->rouse_cb);
2074 coro->rouse_cb = 0;
2075 }
2076
2077 if (!SvROK (cb)
2078 || SvTYPE (SvRV (cb)) != SVt_PVCV
2079 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2080 croak ("Coro::rouse_wait called with illegal callback argument,");
2081
2082 {
2083 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2084 SV *data = (SV *)S_GENSUB_ARG;
2085
2086 frame->data = (void *)data;
2087 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2088 frame->check = slf_check_rouse_wait;
2089 }
2090}
2091
2092static SV *
2093coro_new_rouse_cb (pTHX)
2094{
2095 HV *hv = (HV *)SvRV (coro_current);
2096 struct coro *coro = SvSTATE_hv (hv);
2097 SV *data = newRV_inc ((SV *)hv);
2098 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2099
2100 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2101 SvREFCNT_dec (data); /* magicext increases the refcount */
2102
2103 SvREFCNT_dec (coro->rouse_cb);
2104 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2105
2106 return cb;
2107}
2108
2109/*****************************************************************************/
2110/* schedule-like-function opcode (SLF) */
2111
2112static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2113static const CV *slf_cv;
2114static SV **slf_argv;
2115static int slf_argc, slf_arga; /* count, allocated */
2116static I32 slf_ax; /* top of stack, for restore */
2117
2118/* this restores the stack in the case we patched the entersub, to */
2119/* recreate the stack frame as perl will on following calls */
2120/* since entersub cleared the stack */
2121static OP *
2122pp_restore (pTHX)
2123{
2124 int i;
2125 SV **SP = PL_stack_base + slf_ax;
2126
2127 PUSHMARK (SP);
2128
2129 EXTEND (SP, slf_argc + 1);
2130
2131 for (i = 0; i < slf_argc; ++i)
2132 PUSHs (sv_2mortal (slf_argv [i]));
2133
2134 PUSHs ((SV *)CvGV (slf_cv));
2135
2136 RETURNOP (slf_restore.op_first);
2137}
2138
2139static void
2140slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2141{
2142 SV **arg = (SV **)slf_frame.data;
2143
2144 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2145}
2146
2147static void
2148slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2149{
2150 if (items != 2)
2151 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2152
2153 frame->prepare = slf_prepare_transfer;
2154 frame->check = slf_check_nop;
2155 frame->data = (void *)arg; /* let's hope it will stay valid */
2156}
2157
2158static void
2159slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2160{
2161 frame->prepare = prepare_schedule;
2162 frame->check = slf_check_nop;
2163}
2164
2165static void
2166slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2167{
2168 struct coro *next = (struct coro *)slf_frame.data;
2169
2170 SvREFCNT_inc_NN (next->hv);
2171 prepare_schedule_to (aTHX_ ta, next);
2172}
2173
2174static void
2175slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2176{
2177 if (!items)
2178 croak ("Coro::schedule_to expects a coroutine argument, caught");
2179
2180 frame->data = (void *)SvSTATE (arg [0]);
2181 frame->prepare = slf_prepare_schedule_to;
2182 frame->check = slf_check_nop;
2183}
2184
2185static void
2186slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2187{
2188 api_ready (aTHX_ SvRV (coro_current));
2189
2190 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2191}
2192
2193static void
2194slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2195{
2196 frame->prepare = prepare_cede;
2197 frame->check = slf_check_nop;
2198}
2199
2200static void
2201slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2202{
2203 frame->prepare = prepare_cede_notself;
2204 frame->check = slf_check_nop;
2205}
2206
2207/*
2208 * these not obviously related functions are all rolled into one
2209 * function to increase chances that they all will call transfer with the same
2210 * stack offset
2211 * SLF stands for "schedule-like-function".
2212 */
2213static OP *
2214pp_slf (pTHX)
2215{
2216 I32 checkmark; /* mark SP to see how many elements check has pushed */
2217
2218 /* set up the slf frame, unless it has already been set-up */
2219 /* the latter happens when a new coro has been started */
2220 /* or when a new cctx was attached to an existing coroutine */
2221 if (expect_true (!slf_frame.prepare))
2222 {
2223 /* first iteration */
2224 dSP;
2225 SV **arg = PL_stack_base + TOPMARK + 1;
2226 int items = SP - arg; /* args without function object */
2227 SV *gv = *sp;
2228
2229 /* do a quick consistency check on the "function" object, and if it isn't */
2230 /* for us, divert to the real entersub */
2231 if (SvTYPE (gv) != SVt_PVGV
2232 || !GvCV (gv)
2233 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2234 return PL_ppaddr[OP_ENTERSUB](aTHX);
2235
2236 if (!(PL_op->op_flags & OPf_STACKED))
2237 {
2238 /* ampersand-form of call, use @_ instead of stack */
2239 AV *av = GvAV (PL_defgv);
2240 arg = AvARRAY (av);
2241 items = AvFILLp (av) + 1;
2242 }
2243
2244 /* now call the init function, which needs to set up slf_frame */
2245 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2246 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2247
2248 /* pop args */
2249 SP = PL_stack_base + POPMARK;
2250
2251 PUTBACK;
2252 }
2253
2254 /* now that we have a slf_frame, interpret it! */
2255 /* we use a callback system not to make the code needlessly */
2256 /* complicated, but so we can run multiple perl coros from one cctx */
2257
2258 do
2259 {
2260 struct coro_transfer_args ta;
2261
2262 slf_frame.prepare (aTHX_ &ta);
2263 TRANSFER (ta, 0);
2264
2265 checkmark = PL_stack_sp - PL_stack_base;
2266 }
2267 while (slf_frame.check (aTHX_ &slf_frame));
2268
2269 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2270
2271 /* exception handling */
2272 if (expect_false (CORO_THROW))
2273 {
2274 SV *exception = sv_2mortal (CORO_THROW);
2275
2276 CORO_THROW = 0;
2277 sv_setsv (ERRSV, exception);
2278 croak (0);
2279 }
2280
2281 /* return value handling - mostly like entersub */
2282 /* make sure we put something on the stack in scalar context */
2283 if (GIMME_V == G_SCALAR)
2284 {
2285 dSP;
2286 SV **bot = PL_stack_base + checkmark;
2287
2288 if (sp == bot) /* too few, push undef */
2289 bot [1] = &PL_sv_undef;
2290 else if (sp != bot + 1) /* too many, take last one */
2291 bot [1] = *sp;
2292
2293 SP = bot + 1;
2294
2295 PUTBACK;
2296 }
2297
2298 return NORMAL;
2299}
2300
2301static void
2302api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2303{
2304 int i;
2305 SV **arg = PL_stack_base + ax;
2306 int items = PL_stack_sp - arg + 1;
2307
2308 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2309
2310 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2311 && PL_op->op_ppaddr != pp_slf)
2312 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2313
2314 CvFLAGS (cv) |= CVf_SLF;
2315 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2316 slf_cv = cv;
2317
2318 /* we patch the op, and then re-run the whole call */
2319 /* we have to put the same argument on the stack for this to work */
2320 /* and this will be done by pp_restore */
2321 slf_restore.op_next = (OP *)&slf_restore;
2322 slf_restore.op_type = OP_CUSTOM;
2323 slf_restore.op_ppaddr = pp_restore;
2324 slf_restore.op_first = PL_op;
2325
2326 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2327
2328 if (PL_op->op_flags & OPf_STACKED)
2329 {
2330 if (items > slf_arga)
2331 {
2332 slf_arga = items;
2333 free (slf_argv);
2334 slf_argv = malloc (slf_arga * sizeof (SV *));
2335 }
2336
2337 slf_argc = items;
2338
2339 for (i = 0; i < items; ++i)
2340 slf_argv [i] = SvREFCNT_inc (arg [i]);
2341 }
2342 else
2343 slf_argc = 0;
2344
2345 PL_op->op_ppaddr = pp_slf;
2346 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2347
2348 PL_op = (OP *)&slf_restore;
2349}
2350
2351/*****************************************************************************/
2352/* dynamic wind */
2353
2354static void
2355on_enterleave_call (pTHX_ SV *cb)
2356{
2357 dSP;
2358
2359 PUSHSTACK;
2360
2361 PUSHMARK (SP);
2362 PUTBACK;
2363 call_sv (cb, G_VOID | G_DISCARD);
2364 SPAGAIN;
2365
2366 POPSTACK;
2367}
2368
2369static SV *
2370coro_avp_pop_and_free (pTHX_ AV **avp)
2371{
2372 AV *av = *avp;
2373 SV *res = av_pop (av);
2374
2375 if (AvFILLp (av) < 0)
2376 {
2377 *avp = 0;
2378 SvREFCNT_dec (av);
2379 }
2380
2381 return res;
2382}
2383
2384static void
2385coro_pop_on_enter (pTHX_ void *coro)
2386{
2387 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2388 SvREFCNT_dec (cb);
2389}
2390
2391static void
2392coro_pop_on_leave (pTHX_ void *coro)
2393{
2394 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2395 on_enterleave_call (aTHX_ sv_2mortal (cb));
2396}
1763 2397
1764/*****************************************************************************/ 2398/*****************************************************************************/
1765/* PerlIO::cede */ 2399/* PerlIO::cede */
1766 2400
1767typedef struct 2401typedef struct
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2429 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2430 double now = nvtime ();
1797 2431
1798 if (now >= self->next) 2432 if (now >= self->next)
1799 { 2433 {
1800 api_cede (); 2434 api_cede (aTHX);
1801 self->next = now + self->every; 2435 self->next = now + self->every;
1802 } 2436 }
1803 2437
1804 return PerlIOBuf_flush (aTHX_ f); 2438 return PerlIOBuf_flush (aTHX_ f);
1805} 2439}
… …
1835 PerlIOBuf_get_cnt, 2469 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2470 PerlIOBuf_set_ptrcnt,
1837}; 2471};
1838 2472
1839/*****************************************************************************/ 2473/*****************************************************************************/
2474/* Coro::Semaphore & Coro::Signal */
1840 2475
1841static const CV *slf_cv; /* for quick consistency check */
1842
1843static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *slf_arg0;
1845static SV *slf_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP * 2476static SV *
1851pp_restore (pTHX) 2477coro_waitarray_new (pTHX_ int count)
1852{ 2478{
2479 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2480 AV *av = newAV ();
2481 SV **ary;
2482
2483 /* unfortunately, building manually saves memory */
2484 Newx (ary, 2, SV *);
2485 AvALLOC (av) = ary;
2486#if PERL_VERSION_ATLEAST (5,10,0)
2487 AvARRAY (av) = ary;
2488#else
2489 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2490 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2491 SvPVX ((SV *)av) = (char *)ary;
2492#endif
2493 AvMAX (av) = 1;
2494 AvFILLp (av) = 0;
2495 ary [0] = newSViv (count);
2496
2497 return newRV_noinc ((SV *)av);
2498}
2499
2500/* semaphore */
2501
2502static void
2503coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2504{
2505 SV *count_sv = AvARRAY (av)[0];
2506 IV count = SvIVX (count_sv);
2507
2508 count += adjust;
2509 SvIVX (count_sv) = count;
2510
2511 /* now wake up as many waiters as are expected to lock */
2512 while (count > 0 && AvFILLp (av) > 0)
2513 {
2514 SV *cb;
2515
2516 /* swap first two elements so we can shift a waiter */
2517 AvARRAY (av)[0] = AvARRAY (av)[1];
2518 AvARRAY (av)[1] = count_sv;
2519 cb = av_shift (av);
2520
2521 if (SvOBJECT (cb))
2522 {
2523 api_ready (aTHX_ cb);
2524 --count;
2525 }
2526 else if (SvTYPE (cb) == SVt_PVCV)
2527 {
2528 dSP;
2529 PUSHMARK (SP);
2530 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2531 PUTBACK;
2532 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2533 }
2534
2535 SvREFCNT_dec (cb);
2536 }
2537}
2538
2539static void
2540coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2541{
2542 /* call $sem->adjust (0) to possibly wake up some other waiters */
2543 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2544}
2545
2546static int
2547slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2548{
2549 AV *av = (AV *)frame->data;
2550 SV *count_sv = AvARRAY (av)[0];
2551
2552 /* if we are about to throw, don't actually acquire the lock, just throw */
2553 if (CORO_THROW)
2554 return 0;
2555 else if (SvIVX (count_sv) > 0)
2556 {
2557 SvSTATE_current->on_destroy = 0;
2558
2559 if (acquire)
2560 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2561 else
2562 coro_semaphore_adjust (aTHX_ av, 0);
2563
2564 return 0;
2565 }
2566 else
2567 {
2568 int i;
2569 /* if we were woken up but can't down, we look through the whole */
2570 /* waiters list and only add us if we aren't in there already */
2571 /* this avoids some degenerate memory usage cases */
2572
2573 for (i = 1; i <= AvFILLp (av); ++i)
2574 if (AvARRAY (av)[i] == SvRV (coro_current))
2575 return 1;
2576
2577 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2578 return 1;
2579 }
2580}
2581
2582static int
2583slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2584{
2585 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2586}
2587
2588static int
2589slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2590{
2591 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2592}
2593
2594static void
2595slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2596{
2597 AV *av = (AV *)SvRV (arg [0]);
2598
2599 if (SvIVX (AvARRAY (av)[0]) > 0)
2600 {
2601 frame->data = (void *)av;
2602 frame->prepare = prepare_nop;
2603 }
2604 else
2605 {
2606 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2607
2608 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2609 frame->prepare = prepare_schedule;
2610
2611 /* to avoid race conditions when a woken-up coro gets terminated */
2612 /* we arrange for a temporary on_destroy that calls adjust (0) */
2613 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2614 }
2615}
2616
2617static void
2618slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2619{
2620 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2621 frame->check = slf_check_semaphore_down;
2622}
2623
2624static void
2625slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2626{
2627 if (items >= 2)
2628 {
2629 /* callback form */
2630 AV *av = (AV *)SvRV (arg [0]);
2631 SV *cb_cv = s_get_cv_croak (arg [1]);
2632
2633 av_push (av, SvREFCNT_inc_NN (cb_cv));
2634
2635 if (SvIVX (AvARRAY (av)[0]) > 0)
2636 coro_semaphore_adjust (aTHX_ av, 0);
2637
2638 frame->prepare = prepare_nop;
2639 frame->check = slf_check_nop;
2640 }
2641 else
2642 {
2643 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2644 frame->check = slf_check_semaphore_wait;
2645 }
2646}
2647
2648/* signal */
2649
2650static void
2651coro_signal_wake (pTHX_ AV *av, int count)
2652{
2653 SvIVX (AvARRAY (av)[0]) = 0;
2654
2655 /* now signal count waiters */
2656 while (count > 0 && AvFILLp (av) > 0)
2657 {
2658 SV *cb;
2659
2660 /* swap first two elements so we can shift a waiter */
2661 cb = AvARRAY (av)[0];
2662 AvARRAY (av)[0] = AvARRAY (av)[1];
2663 AvARRAY (av)[1] = cb;
2664
2665 cb = av_shift (av);
2666
2667 if (SvTYPE (cb) == SVt_PVCV)
2668 {
2669 dSP;
2670 PUSHMARK (SP);
2671 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2672 PUTBACK;
2673 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2674 }
2675 else
2676 {
2677 api_ready (aTHX_ cb);
2678 sv_setiv (cb, 0); /* signal waiter */
2679 }
2680
2681 SvREFCNT_dec (cb);
2682
2683 --count;
2684 }
2685}
2686
2687static int
2688slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2689{
2690 /* if we are about to throw, also stop waiting */
2691 return SvROK ((SV *)frame->data) && !CORO_THROW;
2692}
2693
2694static void
2695slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2696{
2697 AV *av = (AV *)SvRV (arg [0]);
2698
2699 if (items >= 2)
2700 {
2701 SV *cb_cv = s_get_cv_croak (arg [1]);
2702 av_push (av, SvREFCNT_inc_NN (cb_cv));
2703
2704 if (SvIVX (AvARRAY (av)[0]))
2705 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2706
2707 frame->prepare = prepare_nop;
2708 frame->check = slf_check_nop;
2709 }
2710 else if (SvIVX (AvARRAY (av)[0]))
2711 {
2712 SvIVX (AvARRAY (av)[0]) = 0;
2713 frame->prepare = prepare_nop;
2714 frame->check = slf_check_nop;
2715 }
2716 else
2717 {
2718 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2719
2720 av_push (av, waiter);
2721
2722 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2723 frame->prepare = prepare_schedule;
2724 frame->check = slf_check_signal_wait;
2725 }
2726}
2727
2728/*****************************************************************************/
2729/* Coro::AIO */
2730
2731#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2732
2733/* helper storage struct */
2734struct io_state
2735{
2736 int errorno;
2737 I32 laststype; /* U16 in 5.10.0 */
2738 int laststatval;
2739 Stat_t statcache;
2740};
2741
2742static void
2743coro_aio_callback (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746 AV *state = (AV *)S_GENSUB_ARG;
2747 SV *coro = av_pop (state);
2748 SV *data_sv = newSV (sizeof (struct io_state));
2749
2750 av_extend (state, items - 1);
2751
2752 sv_upgrade (data_sv, SVt_PV);
2753 SvCUR_set (data_sv, sizeof (struct io_state));
2754 SvPOK_only (data_sv);
2755
2756 {
2757 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2758
2759 data->errorno = errno;
2760 data->laststype = PL_laststype;
2761 data->laststatval = PL_laststatval;
2762 data->statcache = PL_statcache;
2763 }
2764
2765 /* now build the result vector out of all the parameters and the data_sv */
2766 {
2767 int i;
2768
2769 for (i = 0; i < items; ++i)
2770 av_push (state, SvREFCNT_inc_NN (ST (i)));
2771 }
2772
2773 av_push (state, data_sv);
2774
2775 api_ready (aTHX_ coro);
2776 SvREFCNT_dec (coro);
2777 SvREFCNT_dec ((AV *)state);
2778}
2779
2780static int
2781slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2782{
2783 AV *state = (AV *)frame->data;
2784
2785 /* if we are about to throw, return early */
2786 /* this does not cancel the aio request, but at least */
2787 /* it quickly returns */
2788 if (CORO_THROW)
2789 return 0;
2790
2791 /* one element that is an RV? repeat! */
2792 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2793 return 1;
2794
2795 /* restore status */
2796 {
2797 SV *data_sv = av_pop (state);
2798 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2799
2800 errno = data->errorno;
2801 PL_laststype = data->laststype;
2802 PL_laststatval = data->laststatval;
2803 PL_statcache = data->statcache;
2804
2805 SvREFCNT_dec (data_sv);
2806 }
2807
2808 /* push result values */
2809 {
1853 dSP; 2810 dSP;
2811 int i;
1854 2812
2813 EXTEND (SP, AvFILLp (state) + 1);
2814 for (i = 0; i <= AvFILLp (state); ++i)
2815 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2816
2817 PUTBACK;
2818 }
2819
2820 return 0;
2821}
2822
2823static void
2824slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2825{
2826 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2827 SV *coro_hv = SvRV (coro_current);
2828 struct coro *coro = SvSTATE_hv (coro_hv);
2829
2830 /* put our coroutine id on the state arg */
2831 av_push (state, SvREFCNT_inc_NN (coro_hv));
2832
2833 /* first see whether we have a non-zero priority and set it as AIO prio */
2834 if (coro->prio)
2835 {
2836 dSP;
2837
2838 static SV *prio_cv;
2839 static SV *prio_sv;
2840
2841 if (expect_false (!prio_cv))
2842 {
2843 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2844 prio_sv = newSViv (0);
2845 }
2846
2847 PUSHMARK (SP);
2848 sv_setiv (prio_sv, coro->prio);
2849 XPUSHs (prio_sv);
2850
2851 PUTBACK;
2852 call_sv (prio_cv, G_VOID | G_DISCARD);
2853 }
2854
2855 /* now call the original request */
2856 {
2857 dSP;
2858 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2859 int i;
2860
1855 PUSHMARK (SP); 2861 PUSHMARK (SP);
1856 2862
1857 EXTEND (SP, 3); 2863 /* first push all args to the stack */
1858 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2864 EXTEND (SP, items + 1);
1859 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1860 PUSHs ((SV *)CvGV (slf_cv));
1861 2865
1862 RETURNOP (slf_restore.op_first); 2866 for (i = 0; i < items; ++i)
1863} 2867 PUSHs (arg [i]);
1864 2868
1865#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2869 /* now push the callback closure */
2870 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1866 2871
1867/* declare prototype */ 2872 /* now call the AIO function - we assume our request is uncancelable */
1868XS(XS_Coro__State__set_stacklevel);
1869
1870/*
1871 * these not obviously related functions are all rolled into one
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 * SLF stands for "schedule-like-function".
1875 */
1876static OP *
1877pp_slf (pTHX)
1878{
1879 dSP;
1880 struct transfer_args ta;
1881 SV **arg = PL_stack_base + TOPMARK + 1;
1882 int items = SP - arg; /* args without function object */
1883
1884 /* do a quick consistency check on the "function" object, and if it isn't */
1885 /* for us, divert to the real entersub */
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888
1889 /* pop args */
1890 SP = PL_stack_base + POPMARK;
1891
1892 if (!(PL_op->op_flags & OPf_STACKED))
1893 {
1894 /* ampersand-form of call, use @_ instead of stack */
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899
1900 PUTBACK; 2873 PUTBACK;
1901 switch (PL_op->op_private & OPpENTERSUB_SLF) 2874 call_sv ((SV *)req, G_VOID | G_DISCARD);
1902 {
1903 case 0:
1904 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1905 break;
1906
1907 case 1:
1908 if (items != 2)
1909 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1910
1911 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1912 break;
1913
1914 case 2:
1915 prepare_schedule (aTHX_ &ta);
1916 break;
1917
1918 case 3:
1919 prepare_cede (aTHX_ &ta);
1920 break;
1921
1922 case 4:
1923 prepare_cede_notself (aTHX_ &ta);
1924 break;
1925
1926 case 5:
1927 abort ();
1928
1929 default:
1930 abort ();
1931 } 2875 }
1932 2876
1933 TRANSFER (ta, 0); 2877 /* now that the requets is going, we loop toll we have a result */
1934 SPAGAIN; 2878 frame->data = (void *)state;
1935 2879 frame->prepare = prepare_schedule;
1936 PUTBACK; 2880 frame->check = slf_check_aio_req;
1937 SLF_TAIL;
1938 SPAGAIN;
1939 RETURN;
1940} 2881}
1941 2882
1942static void 2883static void
1943coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2884coro_aio_req_xs (pTHX_ CV *cv)
1944{ 2885{
1945 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2886 dXSARGS;
1946 2887
1947 assert (("FATAL: SLF call with illegal CV value", CvGV (cv))); 2888 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1948 slf_cv = cv;
1949 2889
1950 /* we patch the op, and then re-run the whole call */ 2890 XSRETURN_EMPTY;
1951 /* we have to put the same argument on the stack for this to work */
1952 /* and this will be done by pp_restore */
1953 slf_restore.op_next = (OP *)&slf_restore;
1954 slf_restore.op_type = OP_NULL;
1955 slf_restore.op_ppaddr = pp_restore;
1956 slf_restore.op_first = PL_op;
1957
1958 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1959 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1960
1961 PL_op->op_ppaddr = pp_slf;
1962 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1963
1964 PL_op = (OP *)&slf_restore;
1965} 2891}
2892
2893/*****************************************************************************/
2894
2895#if CORO_CLONE
2896# include "clone.c"
2897#endif
1966 2898
1967MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2899MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1968 2900
1969PROTOTYPES: DISABLE 2901PROTOTYPES: DISABLE
1970 2902
1971BOOT: 2903BOOT:
1972{ 2904{
1973#ifdef USE_ITHREADS 2905#ifdef USE_ITHREADS
1974 MUTEX_INIT (&coro_lock);
1975# if CORO_PTHREAD 2906# if CORO_PTHREAD
1976 coro_thx = PERL_GET_CONTEXT; 2907 coro_thx = PERL_GET_CONTEXT;
1977# endif 2908# endif
1978#endif 2909#endif
1979 BOOT_PAGESIZE; 2910 BOOT_PAGESIZE;
1980 2911
2912 cctx_current = cctx_new_empty ();
2913
1981 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2914 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1982 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2915 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1983 2916
1984 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2917 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1985 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2918 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2000 main_top_env = PL_top_env; 2933 main_top_env = PL_top_env;
2001 2934
2002 while (main_top_env->je_prev) 2935 while (main_top_env->je_prev)
2003 main_top_env = main_top_env->je_prev; 2936 main_top_env = main_top_env->je_prev;
2004 2937
2938 {
2939 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2940
2941 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2942 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2943
2944 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2945 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2946 }
2947
2005 coroapi.ver = CORO_API_VERSION; 2948 coroapi.ver = CORO_API_VERSION;
2006 coroapi.rev = CORO_API_REVISION; 2949 coroapi.rev = CORO_API_REVISION;
2950
2007 coroapi.transfer = api_transfer; 2951 coroapi.transfer = api_transfer;
2952
2953 coroapi.sv_state = SvSTATE_;
2954 coroapi.execute_slf = api_execute_slf;
2955 coroapi.prepare_nop = prepare_nop;
2956 coroapi.prepare_schedule = prepare_schedule;
2957 coroapi.prepare_cede = prepare_cede;
2958 coroapi.prepare_cede_notself = prepare_cede_notself;
2008 2959
2009 { 2960 {
2010 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2961 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2011 2962
2012 if (!svp) croak ("Time::HiRes is required"); 2963 if (!svp) croak ("Time::HiRes is required");
2013 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2964 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2014 2965
2015 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2966 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2967
2968 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2969 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2016 } 2970 }
2017 2971
2018 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2972 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2019} 2973}
2020 2974
2021SV * 2975SV *
2022new (char *klass, ...) 2976new (char *klass, ...)
2977 ALIAS:
2978 Coro::new = 1
2023 CODE: 2979 CODE:
2024{ 2980{
2025 struct coro *coro; 2981 struct coro *coro;
2026 MAGIC *mg; 2982 MAGIC *mg;
2027 HV *hv; 2983 HV *hv;
2984 SV *cb;
2028 int i; 2985 int i;
2986
2987 if (items > 1)
2988 {
2989 cb = s_get_cv_croak (ST (1));
2990
2991 if (!ix)
2992 {
2993 if (CvISXSUB (cb))
2994 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2995
2996 if (!CvROOT (cb))
2997 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2998 }
2999 }
2029 3000
2030 Newz (0, coro, 1, struct coro); 3001 Newz (0, coro, 1, struct coro);
2031 coro->args = newAV (); 3002 coro->args = newAV ();
2032 coro->flags = CF_NEW; 3003 coro->flags = CF_NEW;
2033 3004
… …
2038 coro->hv = hv = newHV (); 3009 coro->hv = hv = newHV ();
2039 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3010 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2040 mg->mg_flags |= MGf_DUP; 3011 mg->mg_flags |= MGf_DUP;
2041 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3012 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2042 3013
3014 if (items > 1)
3015 {
2043 av_extend (coro->args, items - 1); 3016 av_extend (coro->args, items - 1 + ix - 1);
3017
3018 if (ix)
3019 {
3020 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3021 cb = (SV *)cv_coro_run;
3022 }
3023
3024 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3025
2044 for (i = 1; i < items; i++) 3026 for (i = 2; i < items; i++)
2045 av_push (coro->args, newSVsv (ST (i))); 3027 av_push (coro->args, newSVsv (ST (i)));
3028 }
2046} 3029}
2047 OUTPUT: 3030 OUTPUT:
2048 RETVAL 3031 RETVAL
2049 3032
2050void 3033void
2051_set_stacklevel (...) 3034transfer (...)
2052 ALIAS: 3035 PROTOTYPE: $$
2053 Coro::State::transfer = 1 3036 CODE:
2054 Coro::schedule = 2 3037 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2055 Coro::cede = 3
2056 Coro::cede_notself = 4
2057 CODE:
2058 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2059 3038
2060bool 3039bool
2061_destroy (SV *coro_sv) 3040_destroy (SV *coro_sv)
2062 CODE: 3041 CODE:
2063 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3042 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2068_exit (int code) 3047_exit (int code)
2069 PROTOTYPE: $ 3048 PROTOTYPE: $
2070 CODE: 3049 CODE:
2071 _exit (code); 3050 _exit (code);
2072 3051
3052SV *
3053clone (Coro::State coro)
3054 CODE:
3055{
3056#if CORO_CLONE
3057 struct coro *ncoro = coro_clone (aTHX_ coro);
3058 MAGIC *mg;
3059 /* TODO: too much duplication */
3060 ncoro->hv = newHV ();
3061 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3062 mg->mg_flags |= MGf_DUP;
3063 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3064#else
3065 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3066#endif
3067}
3068 OUTPUT:
3069 RETVAL
3070
2073int 3071int
2074cctx_stacksize (int new_stacksize = 0) 3072cctx_stacksize (int new_stacksize = 0)
3073 PROTOTYPE: ;$
2075 CODE: 3074 CODE:
2076 RETVAL = cctx_stacksize; 3075 RETVAL = cctx_stacksize;
2077 if (new_stacksize) 3076 if (new_stacksize)
2078 { 3077 {
2079 cctx_stacksize = new_stacksize; 3078 cctx_stacksize = new_stacksize;
… …
2082 OUTPUT: 3081 OUTPUT:
2083 RETVAL 3082 RETVAL
2084 3083
2085int 3084int
2086cctx_max_idle (int max_idle = 0) 3085cctx_max_idle (int max_idle = 0)
3086 PROTOTYPE: ;$
2087 CODE: 3087 CODE:
2088 RETVAL = cctx_max_idle; 3088 RETVAL = cctx_max_idle;
2089 if (max_idle > 1) 3089 if (max_idle > 1)
2090 cctx_max_idle = max_idle; 3090 cctx_max_idle = max_idle;
2091 OUTPUT: 3091 OUTPUT:
2092 RETVAL 3092 RETVAL
2093 3093
2094int 3094int
2095cctx_count () 3095cctx_count ()
3096 PROTOTYPE:
2096 CODE: 3097 CODE:
2097 RETVAL = cctx_count; 3098 RETVAL = cctx_count;
2098 OUTPUT: 3099 OUTPUT:
2099 RETVAL 3100 RETVAL
2100 3101
2101int 3102int
2102cctx_idle () 3103cctx_idle ()
3104 PROTOTYPE:
2103 CODE: 3105 CODE:
2104 RETVAL = cctx_idle; 3106 RETVAL = cctx_idle;
2105 OUTPUT: 3107 OUTPUT:
2106 RETVAL 3108 RETVAL
2107 3109
2108void 3110void
2109list () 3111list ()
3112 PROTOTYPE:
2110 PPCODE: 3113 PPCODE:
2111{ 3114{
2112 struct coro *coro; 3115 struct coro *coro;
2113 for (coro = coro_first; coro; coro = coro->next) 3116 for (coro = coro_first; coro; coro = coro->next)
2114 if (coro->hv) 3117 if (coro->hv)
… …
2121 eval = 1 3124 eval = 1
2122 CODE: 3125 CODE:
2123{ 3126{
2124 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3127 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2125 { 3128 {
2126 struct coro temp; 3129 struct coro *current = SvSTATE_current;
2127 3130
2128 if (!(coro->flags & CF_RUNNING)) 3131 if (current != coro)
2129 { 3132 {
2130 PUTBACK; 3133 PUTBACK;
2131 save_perl (aTHX_ &temp); 3134 save_perl (aTHX_ current);
2132 load_perl (aTHX_ coro); 3135 load_perl (aTHX_ coro);
3136 SPAGAIN;
2133 } 3137 }
2134 3138
2135 {
2136 dSP;
2137 ENTER;
2138 SAVETMPS;
2139 PUTBACK;
2140 PUSHSTACK; 3139 PUSHSTACK;
3140
2141 PUSHMARK (SP); 3141 PUSHMARK (SP);
3142 PUTBACK;
2142 3143
2143 if (ix) 3144 if (ix)
2144 eval_sv (coderef, 0); 3145 eval_sv (coderef, 0);
2145 else 3146 else
2146 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3147 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2147 3148
2148 POPSTACK; 3149 POPSTACK;
2149 SPAGAIN; 3150 SPAGAIN;
2150 FREETMPS;
2151 LEAVE;
2152 PUTBACK;
2153 }
2154 3151
2155 if (!(coro->flags & CF_RUNNING)) 3152 if (current != coro)
2156 { 3153 {
3154 PUTBACK;
2157 save_perl (aTHX_ coro); 3155 save_perl (aTHX_ coro);
2158 load_perl (aTHX_ &temp); 3156 load_perl (aTHX_ current);
2159 SPAGAIN; 3157 SPAGAIN;
2160 } 3158 }
2161 } 3159 }
2162} 3160}
2163 3161
… …
2167 ALIAS: 3165 ALIAS:
2168 is_ready = CF_READY 3166 is_ready = CF_READY
2169 is_running = CF_RUNNING 3167 is_running = CF_RUNNING
2170 is_new = CF_NEW 3168 is_new = CF_NEW
2171 is_destroyed = CF_DESTROYED 3169 is_destroyed = CF_DESTROYED
3170 is_suspended = CF_SUSPENDED
2172 CODE: 3171 CODE:
2173 RETVAL = boolSV (coro->flags & ix); 3172 RETVAL = boolSV (coro->flags & ix);
2174 OUTPUT: 3173 OUTPUT:
2175 RETVAL 3174 RETVAL
2176 3175
2177void 3176void
2178throw (Coro::State self, SV *throw = &PL_sv_undef) 3177throw (Coro::State self, SV *throw = &PL_sv_undef)
2179 PROTOTYPE: $;$ 3178 PROTOTYPE: $;$
2180 CODE: 3179 CODE:
3180{
3181 struct coro *current = SvSTATE_current;
3182 SV **throwp = self == current ? &CORO_THROW : &self->except;
2181 SvREFCNT_dec (self->throw); 3183 SvREFCNT_dec (*throwp);
3184 SvGETMAGIC (throw);
2182 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3185 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3186}
2183 3187
2184void 3188void
2185api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3189api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3190 PROTOTYPE: $;$
3191 C_ARGS: aTHX_ coro, flags
2186 3192
2187SV * 3193SV *
2188has_cctx (Coro::State coro) 3194has_cctx (Coro::State coro)
2189 PROTOTYPE: $ 3195 PROTOTYPE: $
2190 CODE: 3196 CODE:
2191 RETVAL = boolSV (!!coro->cctx); 3197 /* maybe manage the running flag differently */
3198 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2192 OUTPUT: 3199 OUTPUT:
2193 RETVAL 3200 RETVAL
2194 3201
2195int 3202int
2196is_traced (Coro::State coro) 3203is_traced (Coro::State coro)
… …
2214 OUTPUT: 3221 OUTPUT:
2215 RETVAL 3222 RETVAL
2216 3223
2217void 3224void
2218force_cctx () 3225force_cctx ()
3226 PROTOTYPE:
2219 CODE: 3227 CODE:
2220 struct coro *coro = SvSTATE (coro_current);
2221 coro->cctx->idle_sp = 0; 3228 cctx_current->idle_sp = 0;
2222 3229
2223void 3230void
2224swap_defsv (Coro::State self) 3231swap_defsv (Coro::State self)
2225 PROTOTYPE: $ 3232 PROTOTYPE: $
2226 ALIAS: 3233 ALIAS:
2227 swap_defav = 1 3234 swap_defav = 1
2228 CODE: 3235 CODE:
2229 if (!self->slot) 3236 if (!self->slot)
2230 croak ("cannot swap state with coroutine that has no saved state"); 3237 croak ("cannot swap state with coroutine that has no saved state,");
2231 else 3238 else
2232 { 3239 {
2233 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3240 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2234 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3241 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2235 3242
2236 SV *tmp = *src; *src = *dst; *dst = tmp; 3243 SV *tmp = *src; *src = *dst; *dst = tmp;
2237 } 3244 }
2238 3245
3246void
3247cancel (Coro::State self)
3248 CODE:
3249 coro_state_destroy (aTHX_ self);
3250 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3251
3252
3253SV *
3254enable_times (int enabled = enable_times)
3255 CODE:
3256{
3257 RETVAL = boolSV (enable_times);
3258
3259 if (enabled != enable_times)
3260 {
3261 enable_times = enabled;
3262
3263 coro_times_update ();
3264 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3265 }
3266}
3267 OUTPUT:
3268 RETVAL
3269
3270void
3271times (Coro::State self)
3272 PPCODE:
3273{
3274 struct coro *current = SvSTATE (coro_current);
3275
3276 if (expect_false (current == self))
3277 {
3278 coro_times_update ();
3279 coro_times_add (SvSTATE (coro_current));
3280 }
3281
3282 EXTEND (SP, 2);
3283 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3284 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3285
3286 if (expect_false (current == self))
3287 coro_times_sub (SvSTATE (coro_current));
3288}
3289
2239MODULE = Coro::State PACKAGE = Coro 3290MODULE = Coro::State PACKAGE = Coro
2240 3291
2241BOOT: 3292BOOT:
2242{ 3293{
2243 int i;
2244
2245 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2246 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3294 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2247 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3295 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2248 3296 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3297 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2249 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3298 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2250 SvREADONLY_on (coro_current); 3299 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3300 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3301 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3302 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3303
3304 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3305 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3306 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3307 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2251 3308
2252 coro_stash = gv_stashpv ("Coro", TRUE); 3309 coro_stash = gv_stashpv ("Coro", TRUE);
2253 3310
2254 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3311 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2255 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3312 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2256 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3313 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2257 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3314 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2258 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3315 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2259 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3316 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2260
2261 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2262 coro_ready[i] = newAV ();
2263 3317
2264 { 3318 {
2265 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3319 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2266 3320
2267 coroapi.schedule = api_schedule; 3321 coroapi.schedule = api_schedule;
3322 coroapi.schedule_to = api_schedule_to;
2268 coroapi.cede = api_cede; 3323 coroapi.cede = api_cede;
2269 coroapi.cede_notself = api_cede_notself; 3324 coroapi.cede_notself = api_cede_notself;
2270 coroapi.ready = api_ready; 3325 coroapi.ready = api_ready;
2271 coroapi.is_ready = api_is_ready; 3326 coroapi.is_ready = api_is_ready;
2272 coroapi.nready = &coro_nready; 3327 coroapi.nready = coro_nready;
2273 coroapi.current = coro_current; 3328 coroapi.current = coro_current;
2274 3329
2275 GCoroAPI = &coroapi; 3330 /*GCoroAPI = &coroapi;*/
2276 sv_setiv (sv, (IV)&coroapi); 3331 sv_setiv (sv, (IV)&coroapi);
2277 SvREADONLY_on (sv); 3332 SvREADONLY_on (sv);
2278 } 3333 }
2279} 3334}
3335
3336void
3337terminate (...)
3338 CODE:
3339 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3340
3341void
3342schedule (...)
3343 CODE:
3344 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3345
3346void
3347schedule_to (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3350
3351void
3352cede_to (...)
3353 CODE:
3354 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3355
3356void
3357cede (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_cede);
3360
3361void
3362cede_notself (...)
3363 CODE:
3364 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2280 3365
2281void 3366void
2282_set_current (SV *current) 3367_set_current (SV *current)
2283 PROTOTYPE: $ 3368 PROTOTYPE: $
2284 CODE: 3369 CODE:
… …
2287 3372
2288void 3373void
2289_set_readyhook (SV *hook) 3374_set_readyhook (SV *hook)
2290 PROTOTYPE: $ 3375 PROTOTYPE: $
2291 CODE: 3376 CODE:
2292 LOCK;
2293 SvREFCNT_dec (coro_readyhook); 3377 SvREFCNT_dec (coro_readyhook);
3378 SvGETMAGIC (hook);
2294 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3379 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2295 UNLOCK;
2296 3380
2297int 3381int
2298prio (Coro::State coro, int newprio = 0) 3382prio (Coro::State coro, int newprio = 0)
3383 PROTOTYPE: $;$
2299 ALIAS: 3384 ALIAS:
2300 nice = 1 3385 nice = 1
2301 CODE: 3386 CODE:
2302{ 3387{
2303 RETVAL = coro->prio; 3388 RETVAL = coro->prio;
… …
2305 if (items > 1) 3390 if (items > 1)
2306 { 3391 {
2307 if (ix) 3392 if (ix)
2308 newprio = coro->prio - newprio; 3393 newprio = coro->prio - newprio;
2309 3394
2310 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3395 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2311 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3396 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2312 3397
2313 coro->prio = newprio; 3398 coro->prio = newprio;
2314 } 3399 }
2315} 3400}
2316 OUTPUT: 3401 OUTPUT:
… …
2318 3403
2319SV * 3404SV *
2320ready (SV *self) 3405ready (SV *self)
2321 PROTOTYPE: $ 3406 PROTOTYPE: $
2322 CODE: 3407 CODE:
2323 RETVAL = boolSV (api_ready (self)); 3408 RETVAL = boolSV (api_ready (aTHX_ self));
2324 OUTPUT: 3409 OUTPUT:
2325 RETVAL 3410 RETVAL
2326 3411
2327int 3412int
2328nready (...) 3413nready (...)
… …
2330 CODE: 3415 CODE:
2331 RETVAL = coro_nready; 3416 RETVAL = coro_nready;
2332 OUTPUT: 3417 OUTPUT:
2333 RETVAL 3418 RETVAL
2334 3419
2335# for async_pool speedup
2336void 3420void
2337_pool_1 (SV *cb) 3421suspend (Coro::State self)
3422 PROTOTYPE: $
2338 CODE: 3423 CODE:
2339{ 3424 self->flags |= CF_SUSPENDED;
2340 struct coro *coro = SvSTATE (coro_current);
2341 HV *hv = (HV *)SvRV (coro_current);
2342 AV *defav = GvAV (PL_defgv);
2343 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2344 AV *invoke_av;
2345 int i, len;
2346 3425
2347 if (!invoke) 3426void
3427resume (Coro::State self)
3428 PROTOTYPE: $
3429 CODE:
3430 self->flags &= ~CF_SUSPENDED;
3431
3432void
3433_pool_handler (...)
3434 CODE:
3435 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3436
3437void
3438async_pool (SV *cv, ...)
3439 PROTOTYPE: &@
3440 PPCODE:
3441{
3442 HV *hv = (HV *)av_pop (av_async_pool);
3443 AV *av = newAV ();
3444 SV *cb = ST (0);
3445 int i;
3446
3447 av_extend (av, items - 2);
3448 for (i = 1; i < items; ++i)
3449 av_push (av, SvREFCNT_inc_NN (ST (i)));
3450
3451 if ((SV *)hv == &PL_sv_undef)
2348 { 3452 {
2349 SV *old = PL_diehook; 3453 PUSHMARK (SP);
2350 PL_diehook = 0; 3454 EXTEND (SP, 2);
2351 SvREFCNT_dec (old); 3455 PUSHs (sv_Coro);
2352 croak ("\3async_pool terminate\2\n"); 3456 PUSHs ((SV *)cv_pool_handler);
3457 PUTBACK;
3458 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3459 SPAGAIN;
3460
3461 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2353 } 3462 }
2354 3463
2355 SvREFCNT_dec (coro->saved_deffh);
2356 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2357
2358 hv_store (hv, "desc", sizeof ("desc") - 1,
2359 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2360
2361 invoke_av = (AV *)SvRV (invoke);
2362 len = av_len (invoke_av);
2363
2364 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2365
2366 if (len > 0)
2367 { 3464 {
2368 av_fill (defav, len - 1); 3465 struct coro *coro = SvSTATE_hv (hv);
2369 for (i = 0; i < len; ++i) 3466
2370 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3467 assert (!coro->invoke_cb);
3468 assert (!coro->invoke_av);
3469 coro->invoke_cb = SvREFCNT_inc (cb);
3470 coro->invoke_av = av;
2371 } 3471 }
2372 3472
3473 api_ready (aTHX_ (SV *)hv);
3474
3475 if (GIMME_V != G_VOID)
3476 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3477 else
2373 SvREFCNT_dec (invoke); 3478 SvREFCNT_dec (hv);
2374} 3479}
2375 3480
2376void 3481SV *
2377_pool_2 (SV *cb) 3482rouse_cb ()
3483 PROTOTYPE:
2378 CODE: 3484 CODE:
2379{ 3485 RETVAL = coro_new_rouse_cb (aTHX);
2380 struct coro *coro = SvSTATE (coro_current);
2381
2382 sv_setsv (cb, &PL_sv_undef);
2383
2384 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2385 coro->saved_deffh = 0;
2386
2387 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2388 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2389 {
2390 SV *old = PL_diehook;
2391 PL_diehook = 0;
2392 SvREFCNT_dec (old);
2393 croak ("\3async_pool terminate\2\n");
2394 }
2395
2396 av_clear (GvAV (PL_defgv));
2397 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2398 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2399
2400 coro->prio = 0;
2401
2402 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2403 api_trace (coro_current, 0);
2404
2405 av_push (av_async_pool, newSVsv (coro_current));
2406}
2407
2408#if 0
2409
2410void
2411_generator_call (...)
2412 PROTOTYPE: @
2413 PPCODE:
2414 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2415 xxxx
2416 abort ();
2417
2418SV *
2419gensub (SV *sub, ...)
2420 PROTOTYPE: &;@
2421 CODE:
2422{
2423 struct coro *coro;
2424 MAGIC *mg;
2425 CV *xcv;
2426 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2427 int i;
2428
2429 CvGV (ncv) = CvGV (cv);
2430 CvFILE (ncv) = CvFILE (cv);
2431
2432 Newz (0, coro, 1, struct coro);
2433 coro->args = newAV ();
2434 coro->flags = CF_NEW;
2435
2436 av_extend (coro->args, items - 1);
2437 for (i = 1; i < items; i++)
2438 av_push (coro->args, newSVsv (ST (i)));
2439
2440 CvISXSUB_on (ncv);
2441 CvXSUBANY (ncv).any_ptr = (void *)coro;
2442
2443 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2444
2445 CvXSUB (ncv) = CvXSUB (xcv);
2446 CvANON_on (ncv);
2447
2448 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2449 RETVAL = newRV_noinc ((SV *)ncv);
2450}
2451 OUTPUT: 3486 OUTPUT:
2452 RETVAL 3487 RETVAL
2453 3488
2454#endif
2455
2456
2457MODULE = Coro::State PACKAGE = Coro::AIO
2458
2459void 3489void
2460_get_state (SV *self) 3490rouse_wait (...)
3491 PROTOTYPE: ;$
2461 PPCODE: 3492 PPCODE:
2462{ 3493 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2463 AV *defav = GvAV (PL_defgv);
2464 AV *av = newAV ();
2465 int i;
2466 SV *data_sv = newSV (sizeof (struct io_state));
2467 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2468 SvCUR_set (data_sv, sizeof (struct io_state));
2469 SvPOK_only (data_sv);
2470
2471 data->errorno = errno;
2472 data->laststype = PL_laststype;
2473 data->laststatval = PL_laststatval;
2474 data->statcache = PL_statcache;
2475
2476 av_extend (av, AvFILLp (defav) + 1 + 1);
2477
2478 for (i = 0; i <= AvFILLp (defav); ++i)
2479 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2480
2481 av_push (av, data_sv);
2482
2483 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2484
2485 api_ready (self);
2486}
2487 3494
2488void 3495void
2489_set_state (SV *state) 3496on_enter (SV *block)
3497 ALIAS:
3498 on_leave = 1
2490 PROTOTYPE: $ 3499 PROTOTYPE: &
3500 CODE:
3501{
3502 struct coro *coro = SvSTATE_current;
3503 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3504
3505 block = s_get_cv_croak (block);
3506
3507 if (!*avp)
3508 *avp = newAV ();
3509
3510 av_push (*avp, SvREFCNT_inc (block));
3511
3512 if (!ix)
3513 on_enterleave_call (aTHX_ block);
3514
3515 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3516 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3517 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3518}
3519
3520
3521MODULE = Coro::State PACKAGE = PerlIO::cede
3522
3523BOOT:
3524 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3525
3526
3527MODULE = Coro::State PACKAGE = Coro::Semaphore
3528
3529SV *
3530new (SV *klass, SV *count = 0)
3531 CODE:
3532{
3533 int semcnt = 1;
3534
3535 if (count)
3536 {
3537 SvGETMAGIC (count);
3538
3539 if (SvOK (count))
3540 semcnt = SvIV (count);
3541 }
3542
3543 RETVAL = sv_bless (
3544 coro_waitarray_new (aTHX_ semcnt),
3545 GvSTASH (CvGV (cv))
3546 );
3547}
3548 OUTPUT:
3549 RETVAL
3550
3551# helper for Coro::Channel and others
3552SV *
3553_alloc (int count)
3554 CODE:
3555 RETVAL = coro_waitarray_new (aTHX_ count);
3556 OUTPUT:
3557 RETVAL
3558
3559SV *
3560count (SV *self)
3561 CODE:
3562 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3563 OUTPUT:
3564 RETVAL
3565
3566void
3567up (SV *self, int adjust = 1)
3568 ALIAS:
3569 adjust = 1
3570 CODE:
3571 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3572
3573void
3574down (...)
3575 CODE:
3576 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3577
3578void
3579wait (...)
3580 CODE:
3581 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3582
3583void
3584try (SV *self)
3585 PPCODE:
3586{
3587 AV *av = (AV *)SvRV (self);
3588 SV *count_sv = AvARRAY (av)[0];
3589 IV count = SvIVX (count_sv);
3590
3591 if (count > 0)
3592 {
3593 --count;
3594 SvIVX (count_sv) = count;
3595 XSRETURN_YES;
3596 }
3597 else
3598 XSRETURN_NO;
3599}
3600
3601void
3602waiters (SV *self)
3603 PPCODE:
3604{
3605 AV *av = (AV *)SvRV (self);
3606 int wcount = AvFILLp (av) + 1 - 1;
3607
3608 if (GIMME_V == G_SCALAR)
3609 XPUSHs (sv_2mortal (newSViv (wcount)));
3610 else
3611 {
3612 int i;
3613 EXTEND (SP, wcount);
3614 for (i = 1; i <= wcount; ++i)
3615 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3616 }
3617}
3618
3619MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3620
3621void
3622_may_delete (SV *sem, int count, int extra_refs)
2491 PPCODE: 3623 PPCODE:
2492{ 3624{
2493 AV *av = (AV *)SvRV (state); 3625 AV *av = (AV *)SvRV (sem);
2494 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2495 int i;
2496 3626
2497 errno = data->errorno; 3627 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2498 PL_laststype = data->laststype; 3628 && AvFILLp (av) == 0 /* no waiters, just count */
2499 PL_laststatval = data->laststatval; 3629 && SvIV (AvARRAY (av)[0]) == count)
2500 PL_statcache = data->statcache; 3630 XSRETURN_YES;
2501 3631
3632 XSRETURN_NO;
3633}
3634
3635MODULE = Coro::State PACKAGE = Coro::Signal
3636
3637SV *
3638new (SV *klass)
3639 CODE:
3640 RETVAL = sv_bless (
3641 coro_waitarray_new (aTHX_ 0),
3642 GvSTASH (CvGV (cv))
3643 );
3644 OUTPUT:
3645 RETVAL
3646
3647void
3648wait (...)
3649 CODE:
3650 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3651
3652void
3653broadcast (SV *self)
3654 CODE:
3655{
3656 AV *av = (AV *)SvRV (self);
3657 coro_signal_wake (aTHX_ av, AvFILLp (av));
3658}
3659
3660void
3661send (SV *self)
3662 CODE:
3663{
3664 AV *av = (AV *)SvRV (self);
3665
2502 EXTEND (SP, AvFILLp (av)); 3666 if (AvFILLp (av))
2503 for (i = 0; i < AvFILLp (av); ++i) 3667 coro_signal_wake (aTHX_ av, 1);
2504 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3668 else
3669 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2505} 3670}
3671
3672IV
3673awaited (SV *self)
3674 CODE:
3675 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3676 OUTPUT:
3677 RETVAL
2506 3678
2507 3679
2508MODULE = Coro::State PACKAGE = Coro::AnyEvent 3680MODULE = Coro::State PACKAGE = Coro::AnyEvent
2509 3681
2510BOOT: 3682BOOT:
2511 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3683 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2512 3684
2513SV * 3685void
2514_schedule (...) 3686_schedule (...)
2515 PROTOTYPE: @
2516 CODE: 3687 CODE:
2517{ 3688{
2518 static int incede; 3689 static int incede;
2519 3690
2520 api_cede_notself (); 3691 api_cede_notself (aTHX);
2521 3692
2522 ++incede; 3693 ++incede;
2523 while (coro_nready >= incede && api_cede ()) 3694 while (coro_nready >= incede && api_cede (aTHX))
2524 ; 3695 ;
2525 3696
2526 sv_setsv (sv_activity, &PL_sv_undef); 3697 sv_setsv (sv_activity, &PL_sv_undef);
2527 if (coro_nready >= incede) 3698 if (coro_nready >= incede)
2528 { 3699 {
2529 PUSHMARK (SP); 3700 PUSHMARK (SP);
2530 PUTBACK; 3701 PUTBACK;
2531 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3702 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2532 SPAGAIN;
2533 } 3703 }
2534 3704
2535 --incede; 3705 --incede;
2536} 3706}
2537 3707
2538 3708
2539MODULE = Coro::State PACKAGE = PerlIO::cede 3709MODULE = Coro::State PACKAGE = Coro::AIO
2540 3710
2541BOOT: 3711void
2542 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3712_register (char *target, char *proto, SV *req)
3713 CODE:
3714{
3715 SV *req_cv = s_get_cv_croak (req);
3716 /* newXSproto doesn't return the CV on 5.8 */
3717 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3718 sv_setpv ((SV *)slf_cv, proto);
3719 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3720}
2543 3721

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