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Comparing Coro/Coro/State.xs (file contents):
Revision 1.292 by root, Tue Nov 18 06:09:35 2008 UTC vs.
Revision 1.397 by root, Fri May 6 21:15:17 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
16 21
17#ifdef WIN32 22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
25
26#if defined(_WIN32)
27# undef HAS_GETTIMEOFDAY
18# undef setjmp 28# undef setjmp
19# undef longjmp 29# undef longjmp
20# undef _exit 30# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 31# define setjmp _setjmp /* deep magic */
22#else 32#else
23# include <inttypes.h> /* most portable stdint.h */ 33# include <inttypes.h> /* most portable stdint.h */
24#endif 34#endif
25 35
26#ifdef HAVE_MMAP 36#ifdef HAVE_MMAP
… …
51#endif 61#endif
52 62
53/* the maximum number of idle cctx that will be pooled */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
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#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 67# undef CORO_STACKGUARD
111#endif 68#endif
112 69
113#ifndef CORO_STACKGUARD 70#ifndef CORO_STACKGUARD
… …
120#endif 77#endif
121 78
122/* The next macros try to return the current stack pointer, in an as 79/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 80 * portable way as possible. */
124#if __GNUC__ >= 4 81#if __GNUC__ >= 4
82# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 83# define STACKLEVEL __builtin_frame_address (0)
126#else 84#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 85# define dSTACKLEVEL volatile void *stacklevel
86# define STACKLEVEL ((void *)&stacklevel)
128#endif 87#endif
129 88
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 89#define IN_DESTRUCT PL_dirty
131 90
132#if __GNUC__ >= 3 91#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x) 92# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr), (value))
135# define INLINE static inline 94# define INLINE static inline
136#else 95#else
137# define attribute(x) 96# define attribute(x)
138# define expect(expr,value) (expr) 97# define expect(expr,value) (expr)
139# define INLINE static 98# define INLINE static
… …
143#define expect_true(expr) expect ((expr) != 0, 1) 102#define expect_true(expr) expect ((expr) != 0, 1)
144 103
145#define NOINLINE attribute ((noinline)) 104#define NOINLINE attribute ((noinline))
146 105
147#include "CoroAPI.h" 106#include "CoroAPI.h"
107#define GCoroAPI (&coroapi) /* very sneaky */
148 108
149#ifdef USE_ITHREADS 109#ifdef USE_ITHREADS
150# if CORO_PTHREAD 110# if CORO_PTHREAD
151static void *coro_thx; 111static void *coro_thx;
152# endif 112# endif
153#endif 113#endif
154 114
115#ifdef __linux
116# include <time.h> /* for timespec */
117# include <syscall.h> /* for SYS_* */
118# ifdef SYS_clock_gettime
119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
120# define CORO_CLOCK_MONOTONIC 1
121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
122# endif
123#endif
124
155static double (*nvtime)(); /* so why doesn't it take void? */ 125static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]);
156 127
157/* we hijack an hopefully unused CV flag for our purposes */ 128/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000 129#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX); 130static OP *pp_slf (pTHX);
131static void slf_destroy (pTHX_ struct coro *coro);
160 132
161static U32 cctx_gen; 133static U32 cctx_gen;
162static size_t cctx_stacksize = CORO_STACKSIZE; 134static size_t cctx_stacksize = CORO_STACKSIZE;
163static struct CoroAPI coroapi; 135static struct CoroAPI coroapi;
164static AV *main_mainstack; /* used to differentiate between $main and others */ 136static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 137static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 138static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 139static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 140
141static AV *av_destroy; /* destruction queue */
142static SV *sv_manager; /* the manager coro */
143static SV *sv_idle; /* $Coro::idle */
144
169static GV *irsgv; /* $/ */ 145static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 146static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 147static SV *rv_diehook;
172static SV *rv_warnhook; 148static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */ 149static HV *hv_sig; /* %SIG */
174 150
175/* async_pool helper stuff */ 151/* async_pool helper stuff */
176static SV *sv_pool_rss; 152static SV *sv_pool_rss;
177static SV *sv_pool_size; 153static SV *sv_pool_size;
154static SV *sv_async_pool_idle; /* description string */
178static AV *av_async_pool; 155static AV *av_async_pool; /* idle pool */
156static SV *sv_Coro; /* class string */
157static CV *cv_pool_handler;
179 158
180/* Coro::AnyEvent */ 159/* Coro::AnyEvent */
181static SV *sv_activity; 160static SV *sv_activity;
161
162/* enable processtime/realtime profiling */
163static char enable_times;
164typedef U32 coro_ts[2];
165static coro_ts time_real, time_cpu;
166static char times_valid;
182 167
183static struct coro_cctx *cctx_first; 168static struct coro_cctx *cctx_first;
184static int cctx_count, cctx_idle; 169static int cctx_count, cctx_idle;
185 170
186enum { 171enum {
… …
212 int valgrind_id; 197 int valgrind_id;
213#endif 198#endif
214 unsigned char flags; 199 unsigned char flags;
215} coro_cctx; 200} coro_cctx;
216 201
202static coro_cctx *cctx_current; /* the currently running cctx */
203
204/*****************************************************************************/
205
217enum { 206enum {
218 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
219 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
220 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
221 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
222}; 213};
223 214
224/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
225typedef struct 216typedef struct
226{ 217{
227 SV *defsv; 218 SV *defsv;
228 AV *defav; 219 AV *defav;
229 SV *errsv; 220 SV *errsv;
230 SV *irsgv; 221 SV *irsgv;
222 HV *hinthv;
231#define VAR(name,type) type name; 223#define VAR(name,type) type name;
232# include "state.h" 224# include "state.h"
233#undef VAR 225#undef VAR
234} perl_slots; 226} perl_slots;
235 227
… …
238/* this is a structure representing a perl-level coroutine */ 230/* this is a structure representing a perl-level coroutine */
239struct coro { 231struct coro {
240 /* the C coroutine allocated to this perl coroutine, if any */ 232 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 233 coro_cctx *cctx;
242 234
235 /* ready queue */
236 struct coro *next_ready;
237
243 /* state data */ 238 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */ 239 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack; 240 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */ 241 perl_slots *slot; /* basically the saved sp */
247 242
243 CV *startcv; /* the CV to execute */
248 AV *args; /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */ 245 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */ 246 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */ 247 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro);
253 248
254 /* statistics */ 249 /* statistics */
255 int usecount; /* number of transfers to this coro */ 250 int usecount; /* number of transfers to this coro */
256 251
257 /* coro process data */ 252 /* coro process data */
258 int prio; 253 int prio;
259 SV *throw; /* exception to be thrown */ 254 SV *except; /* exception to be thrown */
255 SV *rouse_cb;
260 256
261 /* async_pool */ 257 /* async_pool */
262 SV *saved_deffh; 258 SV *saved_deffh;
259 SV *invoke_cb;
260 AV *invoke_av;
261
262 /* on_enter/on_leave */
263 AV *on_enter;
264 AV *on_leave;
265
266 /* swap_sv */
267 AV *swap_sv;
268
269 /* times */
270 coro_ts t_cpu, t_real;
263 271
264 /* linked list */ 272 /* linked list */
265 struct coro *next, *prev; 273 struct coro *next, *prev;
266}; 274};
267 275
268typedef struct coro *Coro__State; 276typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 277typedef struct coro *Coro__State_or_hashref;
270 278
271/* the following variables are effectively part of the perl context */ 279/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */ 280/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */ 281/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 282static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
276 283
277/** Coro ********************************************************************/ 284/** Coro ********************************************************************/
278 285
279#define PRIO_MAX 3 286#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 287#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 288#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 289#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 290#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 291#define CORO_PRIO_MIN -4
285 292
286/* for Coro.pm */ 293/* for Coro.pm */
287static SV *coro_current; 294static SV *coro_current;
288static SV *coro_readyhook; 295static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 296static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
297static CV *cv_coro_run;
290static struct coro *coro_first; 298static struct coro *coro_first;
291#define coro_nready coroapi.nready 299#define coro_nready coroapi.nready
300
301/** Coro::Select ************************************************************/
302
303static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select;
305
306/* horrible hack, but if it works... */
307static OP *
308coro_pp_sselect (pTHX)
309{
310 dSP;
311 PUSHMARK (SP - 4); /* fake argument list */
312 XPUSHs (coro_select_select);
313 PUTBACK;
314
315 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
316 PL_op->op_flags |= OPf_STACKED;
317 PL_op->op_private = 0;
318 return PL_ppaddr [OP_ENTERSUB](aTHX);
319}
320
321/** time stuff **************************************************************/
322
323#ifdef HAS_GETTIMEOFDAY
324
325static void
326coro_u2time (pTHX_ UV ret[2])
327{
328 struct timeval tv;
329 gettimeofday (&tv, 0);
330
331 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec;
333}
334
335static double
336coro_nvtime ()
337{
338 struct timeval tv;
339 gettimeofday (&tv, 0);
340
341 return tv.tv_sec + tv.tv_usec * 1e-6;
342}
343
344static void
345time_init (pTHX)
346{
347 nvtime = coro_nvtime;
348 u2time = coro_u2time;
349}
350
351#else
352
353static void
354time_init (pTHX)
355{
356 SV **svp;
357
358 require_pv ("Time/HiRes.pm");
359
360 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
361
362 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
363 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
364
365 nvtime = INT2PTR (double (*)(), SvIV (*svp));
366
367 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
368 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
369}
370
371#endif
292 372
293/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
294 374
295static SV * 375static SV *
296coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
… …
320 get_hv (name, create); 400 get_hv (name, create);
321#endif 401#endif
322 return get_hv (name, create); 402 return get_hv (name, create);
323} 403}
324 404
405INLINE void
406coro_times_update ()
407{
408#ifdef coro_clock_gettime
409 struct timespec ts;
410
411 ts.tv_sec = ts.tv_nsec = 0;
412 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
413 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
414
415 ts.tv_sec = ts.tv_nsec = 0;
416 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
417 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
418#else
419 dTHX;
420 UV tv[2];
421
422 u2time (aTHX_ tv);
423 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000;
425#endif
426}
427
428INLINE void
429coro_times_add (struct coro *c)
430{
431 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0];
434
435 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0];
438}
439
440INLINE void
441coro_times_sub (struct coro *c)
442{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
444 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0];
446
447 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
448 c->t_cpu [1] -= time_cpu [1];
449 c->t_cpu [0] -= time_cpu [0];
450}
451
452/*****************************************************************************/
453/* magic glue */
454
455#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext
457
458#define CORO_MAGIC_NN(sv, type) \
459 (expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \
461 : mg_find (sv, type))
462
463#define CORO_MAGIC(sv, type) \
464 (expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \
466 : 0)
467
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
469#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470
471INLINE struct coro *
472SvSTATE_ (pTHX_ SV *coro)
473{
474 HV *stash;
475 MAGIC *mg;
476
477 if (SvROK (coro))
478 coro = SvRV (coro);
479
480 if (expect_false (SvTYPE (coro) != SVt_PVHV))
481 croak ("Coro::State object required");
482
483 stash = SvSTASH (coro);
484 if (expect_false (stash != coro_stash && stash != coro_state_stash))
485 {
486 /* very slow, but rare, check */
487 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
488 croak ("Coro::State object required");
489 }
490
491 mg = CORO_MAGIC_state (coro);
492 return (struct coro *)mg->mg_ptr;
493}
494
495#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
496
497/* faster than SvSTATE, but expects a coroutine hv */
498#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
499#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
500
501/*****************************************************************************/
502/* padlist management and caching */
503
325static AV * 504static AV *
326coro_clone_padlist (pTHX_ CV *cv) 505coro_derive_padlist (pTHX_ CV *cv)
327{ 506{
328 AV *padlist = CvPADLIST (cv); 507 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 508 AV *newpadlist, *newpad;
330 509
331 newpadlist = newAV (); 510 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 516#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 518 --AvFILLp (padlist);
340 519
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 521 av_store (newpadlist, 1, (SV *)newpad);
343 522
344 return newpadlist; 523 return newpadlist;
345} 524}
346 525
347static void 526static void
348free_padlist (pTHX_ AV *padlist) 527free_padlist (pTHX_ AV *padlist)
349{ 528{
350 /* may be during global destruction */ 529 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 530 if (!IN_DESTRUCT)
352 { 531 {
353 I32 i = AvFILLp (padlist); 532 I32 i = AvFILLp (padlist);
354 while (i >= 0) 533
534 while (i > 0) /* special-case index 0 */
355 { 535 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 536 /* we try to be extra-careful here */
357 if (svp) 537 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 538 I32 j = AvFILLp (av);
359 SV *sv; 539
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 540 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]);
542
543 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 544 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 545 }
366 546
547 SvREFCNT_dec (AvARRAY (padlist)[0]);
548
549 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 550 SvREFCNT_dec ((SV*)padlist);
368 } 551 }
369} 552}
370 553
371static int 554static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 555coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 556{
374 AV *padlist; 557 AV *padlist;
375 AV *av = (AV *)mg->mg_obj; 558 AV *av = (AV *)mg->mg_obj;
559
560 /* perl manages to free our internal AV and _then_ call us */
561 if (IN_DESTRUCT)
562 return 0;
376 563
377 /* casting is fun. */ 564 /* casting is fun. */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
379 free_padlist (aTHX_ padlist); 566 free_padlist (aTHX_ padlist);
380 567
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 569
383 return 0; 570 return 0;
384} 571}
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 572
389static MGVTBL coro_cv_vtbl = { 573static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 574 0, 0, 0, 0,
391 coro_cv_free 575 coro_cv_free
392}; 576};
393
394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type))
398
399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
402 : 0)
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
436 577
437/* the next two functions merely cache the padlists */ 578/* the next two functions merely cache the padlists */
438static void 579static void
439get_padlist (pTHX_ CV *cv) 580get_padlist (pTHX_ CV *cv)
440{ 581{
… …
446 else 587 else
447 { 588 {
448#if CORO_PREFER_PERL_FUNCTIONS 589#if CORO_PREFER_PERL_FUNCTIONS
449 /* this is probably cleaner? but also slower! */ 590 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */ 591 /* in practise, it seems to be less stable */
451 CV *cp = Perl_cv_clone (cv); 592 CV *cp = Perl_cv_clone (aTHX_ cv);
452 CvPADLIST (cv) = CvPADLIST (cp); 593 CvPADLIST (cv) = CvPADLIST (cp);
453 CvPADLIST (cp) = 0; 594 CvPADLIST (cp) = 0;
454 SvREFCNT_dec (cp); 595 SvREFCNT_dec (cp);
455#else 596#else
456 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
457#endif 598#endif
458 } 599 }
459} 600}
460 601
461static void 602static void
… …
468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 609 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
469 610
470 av = (AV *)mg->mg_obj; 611 av = (AV *)mg->mg_obj;
471 612
472 if (expect_false (AvFILLp (av) >= AvMAX (av))) 613 if (expect_false (AvFILLp (av) >= AvMAX (av)))
473 av_extend (av, AvMAX (av) + 1); 614 av_extend (av, AvFILLp (av) + 1);
474 615
475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
476} 617}
477 618
478/** load & save, init *******************************************************/ 619/** load & save, init *******************************************************/
620
621/* swap sv heads, at least logically */
622static void
623swap_svs (pTHX_ Coro__State c)
624{
625 int i;
626
627 for (i = 0; i <= AvFILLp (c->swap_sv); )
628 {
629 SV *a = AvARRAY (c->swap_sv)[i++];
630 SV *b = AvARRAY (c->swap_sv)[i++];
631
632 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
633 SV tmp;
634
635 /* swap sv_any */
636 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
637
638 /* swap sv_flags */
639 SvFLAGS (&tmp) = SvFLAGS (a);
640 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
641 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
642
643#if PERL_VERSION_ATLEAST (5,10,0)
644 /* perl 5.10 complicates this _quite_ a bit, but it also is
645 * much faster, so no quarrels here. alternatively, we could
646 * sv_upgrade to avoid this.
647 */
648 {
649 /* swap sv_u */
650 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
651
652 /* if SvANY points to the head, we need to adjust the pointers,
653 * as the pointer for a still points to b, and maybe vice versa.
654 */
655 #define svany_in_head(type) \
656 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
657
658 if (svany_in_head (SvTYPE (a)))
659 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
660
661 if (svany_in_head (SvTYPE (b)))
662 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
663 }
664#endif
665 }
666}
667
668#define SWAP_SVS(coro) \
669 if (expect_false ((coro)->swap_sv)) \
670 swap_svs (aTHX_ (coro))
671
672static void
673on_enterleave_call (pTHX_ SV *cb);
479 674
480static void 675static void
481load_perl (pTHX_ Coro__State c) 676load_perl (pTHX_ Coro__State c)
482{ 677{
483 perl_slots *slot = c->slot; 678 perl_slots *slot = c->slot;
484 c->slot = 0; 679 c->slot = 0;
485 680
486 PL_mainstack = c->mainstack; 681 PL_mainstack = c->mainstack;
487 682
488 GvSV (PL_defgv) = slot->defsv; 683 GvSV (PL_defgv) = slot->defsv;
489 GvAV (PL_defgv) = slot->defav; 684 GvAV (PL_defgv) = slot->defav;
490 GvSV (PL_errgv) = slot->errsv; 685 GvSV (PL_errgv) = slot->errsv;
491 GvSV (irsgv) = slot->irsgv; 686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
492 688
493 #define VAR(name,type) PL_ ## name = slot->name; 689 #define VAR(name,type) PL_ ## name = slot->name;
494 # include "state.h" 690 # include "state.h"
495 #undef VAR 691 #undef VAR
496 692
… …
509 705
510 PUTBACK; 706 PUTBACK;
511 } 707 }
512 708
513 slf_frame = c->slf_frame; 709 slf_frame = c->slf_frame;
514 coro_throw = c->throw; 710 CORO_THROW = c->except;
711
712 if (expect_false (enable_times))
713 {
714 if (expect_false (!times_valid))
715 coro_times_update ();
716
717 coro_times_sub (c);
718 }
719
720 if (expect_false (c->on_enter))
721 {
722 int i;
723
724 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
725 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
726 }
727
728 SWAP_SVS (c);
515} 729}
516 730
517static void 731static void
518save_perl (pTHX_ Coro__State c) 732save_perl (pTHX_ Coro__State c)
519{ 733{
520 c->throw = coro_throw; 734 SWAP_SVS (c);
735
736 if (expect_false (c->on_leave))
737 {
738 int i;
739
740 for (i = AvFILLp (c->on_leave); i >= 0; --i)
741 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
742 }
743
744 times_valid = 0;
745
746 if (expect_false (enable_times))
747 {
748 coro_times_update (); times_valid = 1;
749 coro_times_add (c);
750 }
751
752 c->except = CORO_THROW;
521 c->slf_frame = slf_frame; 753 c->slf_frame = slf_frame;
522 754
523 { 755 {
524 dSP; 756 dSP;
525 I32 cxix = cxstack_ix; 757 I32 cxix = cxstack_ix;
… …
537 { 769 {
538 while (expect_true (cxix >= 0)) 770 while (expect_true (cxix >= 0))
539 { 771 {
540 PERL_CONTEXT *cx = &ccstk[cxix--]; 772 PERL_CONTEXT *cx = &ccstk[cxix--];
541 773
542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 774 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
543 { 775 {
544 CV *cv = cx->blk_sub.cv; 776 CV *cv = cx->blk_sub.cv;
545 777
546 if (expect_true (CvDEPTH (cv))) 778 if (expect_true (CvDEPTH (cv)))
547 { 779 {
… …
571 /* we manually unroll here, as usually 2 slots is enough */ 803 /* we manually unroll here, as usually 2 slots is enough */
572 if (SLOT_COUNT >= 1) CXINC; 804 if (SLOT_COUNT >= 1) CXINC;
573 if (SLOT_COUNT >= 2) CXINC; 805 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC; 806 if (SLOT_COUNT >= 3) CXINC;
575 { 807 {
576 int i; 808 unsigned int i;
577 for (i = 3; i < SLOT_COUNT; ++i) 809 for (i = 3; i < SLOT_COUNT; ++i)
578 CXINC; 810 CXINC;
579 } 811 }
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 812 cxstack_ix -= SLOT_COUNT; /* undo allocation */
581 813
582 c->mainstack = PL_mainstack; 814 c->mainstack = PL_mainstack;
583 815
584 { 816 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586 818
587 slot->defav = GvAV (PL_defgv); 819 slot->defav = GvAV (PL_defgv);
588 slot->defsv = DEFSV; 820 slot->defsv = DEFSV;
589 slot->errsv = ERRSV; 821 slot->errsv = ERRSV;
590 slot->irsgv = GvSV (irsgv); 822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
591 824
592 #define VAR(name,type) slot->name = PL_ ## name; 825 #define VAR(name,type) slot->name = PL_ ## name;
593 # include "state.h" 826 # include "state.h"
594 #undef VAR 827 #undef VAR
595 } 828 }
… …
600 * of perl.c:init_stacks, except that it uses less memory 833 * of perl.c:init_stacks, except that it uses less memory
601 * on the (sometimes correct) assumption that coroutines do 834 * on the (sometimes correct) assumption that coroutines do
602 * not usually need a lot of stackspace. 835 * not usually need a lot of stackspace.
603 */ 836 */
604#if CORO_PREFER_PERL_FUNCTIONS 837#if CORO_PREFER_PERL_FUNCTIONS
605# define coro_init_stacks init_stacks 838# define coro_init_stacks(thx) init_stacks ()
606#else 839#else
607static void 840static void
608coro_init_stacks (pTHX) 841coro_init_stacks (pTHX)
609{ 842{
610 PL_curstackinfo = new_stackinfo(32, 8); 843 PL_curstackinfo = new_stackinfo(32, 8);
… …
673#if !PERL_VERSION_ATLEAST (5,10,0) 906#if !PERL_VERSION_ATLEAST (5,10,0)
674 Safefree (PL_retstack); 907 Safefree (PL_retstack);
675#endif 908#endif
676} 909}
677 910
911#define CORO_RSS \
912 rss += sizeof (SYM (curstackinfo)); \
913 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
914 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
915 rss += SYM (tmps_max) * sizeof (SV *); \
916 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
917 rss += SYM (scopestack_max) * sizeof (I32); \
918 rss += SYM (savestack_max) * sizeof (ANY);
919
678static size_t 920static size_t
679coro_rss (pTHX_ struct coro *coro) 921coro_rss (pTHX_ struct coro *coro)
680{ 922{
681 size_t rss = sizeof (*coro); 923 size_t rss = sizeof (*coro);
682 924
683 if (coro->mainstack) 925 if (coro->mainstack)
684 { 926 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
688 if (coro->flags & CF_RUNNING) 927 if (coro->flags & CF_RUNNING)
689 { 928 {
690 slot = &tmp_slot; 929 #define SYM(sym) PL_ ## sym
691 930 CORO_RSS;
692 #define VAR(name,type) slot->name = PL_ ## name;
693 # include "state.h"
694 #undef VAR 931 #undef SYM
695 } 932 }
696 else 933 else
697 slot = coro->slot;
698
699 if (slot)
700 { 934 {
701 rss += sizeof (slot->curstackinfo); 935 #define SYM(sym) coro->slot->sym
702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 936 CORO_RSS;
703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 937 #undef SYM
704 rss += slot->tmps_max * sizeof (SV *);
705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706 rss += slot->scopestack_max * sizeof (I32);
707 rss += slot->savestack_max * sizeof (ANY);
708
709#if !PERL_VERSION_ATLEAST (5,10,0)
710 rss += slot->retstack_max * sizeof (OP *);
711#endif
712 } 938 }
713 } 939 }
714 940
715 return rss; 941 return rss;
716} 942}
… …
729#endif 955#endif
730 956
731/* 957/*
732 * This overrides the default magic get method of %SIG elements. 958 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 959 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide 960 * and instead of trying to save and restore the hash elements, we just provide
735 * readback here. 961 * readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */ 962 */
740static int 963static int
741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{ 965{
743 const char *s = MgPV_nolen_const (mg); 966 const char *s = MgPV_nolen_const (mg);
… …
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797 1020
798 if (svp) 1021 if (svp)
799 { 1022 {
800 SV *old = *svp; 1023 SV *old = *svp;
801 *svp = newSVsv (sv); 1024 *svp = SvOK (sv) ? newSVsv (sv) : 0;
802 SvREFCNT_dec (old); 1025 SvREFCNT_dec (old);
803 return 0; 1026 return 0;
804 } 1027 }
805 } 1028 }
806 1029
… …
818slf_check_nop (pTHX_ struct CoroSLF *frame) 1041slf_check_nop (pTHX_ struct CoroSLF *frame)
819{ 1042{
820 return 0; 1043 return 0;
821} 1044}
822 1045
823static UNOP coro_setup_op; 1046static int
1047slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{
1049 return 1;
1050}
1051
1052static UNOP init_perl_op;
824 1053
825static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1054static void NOINLINE /* noinline to keep it out of the transfer fast path */
826coro_setup (pTHX_ struct coro *coro) 1055init_perl (pTHX_ struct coro *coro)
827{ 1056{
828 /* 1057 /*
829 * emulate part of the perl startup here. 1058 * emulate part of the perl startup here.
830 */ 1059 */
831 coro_init_stacks (aTHX); 1060 coro_init_stacks (aTHX);
832 1061
833 PL_runops = RUNOPS_DEFAULT; 1062 PL_runops = RUNOPS_DEFAULT;
834 PL_curcop = &PL_compiling; 1063 PL_curcop = &PL_compiling;
835 PL_in_eval = EVAL_NULL; 1064 PL_in_eval = EVAL_NULL;
836 PL_comppad = 0; 1065 PL_comppad = 0;
1066 PL_comppad_name = 0;
1067 PL_comppad_name_fill = 0;
1068 PL_comppad_name_floor = 0;
837 PL_curpm = 0; 1069 PL_curpm = 0;
838 PL_curpad = 0; 1070 PL_curpad = 0;
839 PL_localizing = 0; 1071 PL_localizing = 0;
840 PL_dirty = 0;
841 PL_restartop = 0; 1072 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0) 1073#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0; 1074 PL_parser = 0;
844#endif 1075#endif
1076 PL_hints = 0;
845 1077
846 /* recreate the die/warn hooks */ 1078 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1079 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1080 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
849 1081
850 GvSV (PL_defgv) = newSV (0); 1082 GvSV (PL_defgv) = newSV (0);
851 GvAV (PL_defgv) = coro->args; coro->args = 0; 1083 GvAV (PL_defgv) = coro->args; coro->args = 0;
852 GvSV (PL_errgv) = newSV (0); 1084 GvSV (PL_errgv) = newSV (0);
853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1085 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1086 GvHV (PL_hintgv) = 0;
854 PL_rs = newSVsv (GvSV (irsgv)); 1087 PL_rs = newSVsv (GvSV (irsgv));
855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
856 1089
857 { 1090 {
858 dSP; 1091 dSP;
859 UNOP myop; 1092 UNOP myop;
860 1093
861 Zero (&myop, 1, UNOP); 1094 Zero (&myop, 1, UNOP);
862 myop.op_next = Nullop; 1095 myop.op_next = Nullop;
1096 myop.op_type = OP_ENTERSUB;
863 myop.op_flags = OPf_WANT_VOID; 1097 myop.op_flags = OPf_WANT_VOID;
864 1098
865 PUSHMARK (SP); 1099 PUSHMARK (SP);
866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1100 PUSHs ((SV *)coro->startcv);
867 PUTBACK; 1101 PUTBACK;
868 PL_op = (OP *)&myop; 1102 PL_op = (OP *)&myop;
869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
870 SPAGAIN;
871 } 1104 }
872 1105
873 /* this newly created coroutine might be run on an existing cctx which most 1106 /* this newly created coroutine might be run on an existing cctx which most
874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1107 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */ 1108 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1109 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1110 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
878 1111
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM; 1113 init_perl_op.op_next = PL_op;
1114 init_perl_op.op_type = OP_ENTERSUB;
881 coro_setup_op.op_ppaddr = pp_slf; 1115 init_perl_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op; 1116 /* no flags etc. required, as an init function won't be called */
883 1117
884 PL_op = (OP *)&coro_setup_op; 1118 PL_op = (OP *)&init_perl_op;
885 1119
886 /* copy throw, in case it was set before coro_setup */ 1120 /* copy throw, in case it was set before init_perl */
887 coro_throw = coro->throw; 1121 CORO_THROW = coro->except;
888}
889 1122
1123 SWAP_SVS (coro);
1124
1125 if (expect_false (enable_times))
1126 {
1127 coro_times_update ();
1128 coro_times_sub (coro);
1129 }
1130}
1131
890static void 1132static void
891coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
892{ 1134{
893 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
894 { 1136 {
895 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
905 1147
906 /* unwind main stack */ 1148 /* unwind main stack */
907 dounwind (-1); 1149 dounwind (-1);
908 } 1150 }
1151}
909 1152
910 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
913 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1157
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1158 {
1159 SV *old_current = SvRV (coro_current);
1160 struct coro *current = SvSTATE (old_current);
1161
1162 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1163
1164 save_perl (aTHX_ current);
1165
1166 /* this will cause transfer_check to croak on block*/
1167 SvRV_set (coro_current, (SV *)coro->hv);
1168
1169 load_perl (aTHX_ coro);
1170
1171 coro_unwind_stacks (aTHX);
1172 coro_destruct_stacks (aTHX);
1173
1174 /* restore swapped sv's */
1175 SWAP_SVS (coro);
1176
1177 // now save some sv's to be free'd later
1178 svf [0] = GvSV (PL_defgv);
1179 svf [1] = (SV *)GvAV (PL_defgv);
1180 svf [2] = GvSV (PL_errgv);
1181 svf [3] = (SV *)PL_defoutgv;
1182 svf [4] = PL_rs;
1183 svf [5] = GvSV (irsgv);
1184 svf [6] = (SV *)GvHV (PL_hintgv);
1185 svf [7] = PL_diehook;
1186 svf [8] = PL_warnhook;
1187 assert (9 == sizeof (svf) / sizeof (*svf));
1188
1189 SvRV_set (coro_current, old_current);
1190
1191 load_perl (aTHX_ current);
1192 }
1193
1194 {
1195 unsigned int i;
1196
1197 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1198 SvREFCNT_dec (svf [i]);
1199
920 SvREFCNT_dec (coro->saved_deffh); 1200 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro_throw); 1201 SvREFCNT_dec (coro->rouse_cb);
922 1202 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1203 SvREFCNT_dec (coro->invoke_av);
1204 }
924} 1205}
925 1206
926INLINE void 1207INLINE void
927free_coro_mortal (pTHX) 1208free_coro_mortal (pTHX)
928{ 1209{
… …
936static int 1217static int
937runops_trace (pTHX) 1218runops_trace (pTHX)
938{ 1219{
939 COP *oldcop = 0; 1220 COP *oldcop = 0;
940 int oldcxix = -2; 1221 int oldcxix = -2;
941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1222
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1223 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1224 {
946 PERL_ASYNC_CHECK (); 1225 PERL_ASYNC_CHECK ();
947 1226
948 if (cctx->flags & CC_TRACE_ALL) 1227 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1228 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1229 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1230 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1231 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1232 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1233 AV *av = newAV (); /* return values */
955 SV **cb; 1234 SV **cb;
… …
992 1271
993 if (PL_curcop != &PL_compiling) 1272 if (PL_curcop != &PL_compiling)
994 { 1273 {
995 SV **cb; 1274 SV **cb;
996 1275
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1276 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1277 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1278 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1279
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1280 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1281 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1282 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1283 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1284 SV *fullname = sv_2mortal (newSV (0));
1007 1285
1008 if (isGV (gv)) 1286 if (isGV (gv))
… …
1013 SAVETMPS; 1291 SAVETMPS;
1014 EXTEND (SP, 3); 1292 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1293 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1294 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1295 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1296 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1297 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1298 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1299 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1300 SPAGAIN;
1023 FREETMPS; 1301 FREETMPS;
… …
1026 } 1304 }
1027 1305
1028 oldcxix = cxstack_ix; 1306 oldcxix = cxstack_ix;
1029 } 1307 }
1030 1308
1031 if (cctx->flags & CC_TRACE_LINE) 1309 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1310 {
1033 dSP; 1311 dSP;
1034 1312
1035 PL_runops = RUNOPS_DEFAULT; 1313 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1314 ENTER;
… …
1055 1333
1056 TAINT_NOT; 1334 TAINT_NOT;
1057 return 0; 1335 return 0;
1058} 1336}
1059 1337
1060static struct coro_cctx *cctx_ssl_cctx;
1061static struct CoroSLF cctx_ssl_frame; 1338static struct CoroSLF cctx_ssl_frame;
1062 1339
1063static void 1340static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1341slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1342{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1343 ta->prev = 0;
1068} 1344}
1069 1345
1070static int 1346static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1347slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{ 1348{
1073 *frame = cctx_ssl_frame; 1349 *frame = cctx_ssl_frame;
1074 1350
1075 return 1; /* execute the restored frame - there must be one */ 1351 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1076} 1352}
1077 1353
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */ 1354/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1079static void NOINLINE 1355static void NOINLINE
1080cctx_prepare (pTHX_ coro_cctx *cctx) 1356cctx_prepare (pTHX)
1081{ 1357{
1082 PL_top_env = &PL_start_env; 1358 PL_top_env = &PL_start_env;
1083 1359
1084 if (cctx->flags & CC_TRACE) 1360 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1361 PL_runops = runops_trace;
1086 1362
1087 /* we already must be in an SLF call, there is no other valid way 1363 /* we already must be executing an SLF op, there is no other valid way
1088 * that can lead to creation of a new cctx */ 1364 * that can lead to creation of a new cctx */
1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1365 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1366 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091 1367
1092 cctx_ssl_cctx = cctx; 1368 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1093 cctx_ssl_frame = slf_frame; 1369 cctx_ssl_frame = slf_frame;
1094 1370
1095 slf_frame.prepare = slf_prepare_set_stacklevel; 1371 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 slf_frame.check = slf_check_set_stacklevel; 1372 slf_frame.check = slf_check_set_stacklevel;
1097} 1373}
… …
1120 /* normally we would need to skip the entersub here */ 1396 /* normally we would need to skip the entersub here */
1121 /* not doing so will re-execute it, which is exactly what we want */ 1397 /* not doing so will re-execute it, which is exactly what we want */
1122 /* PL_nop = PL_nop->op_next */ 1398 /* PL_nop = PL_nop->op_next */
1123 1399
1124 /* inject a fake subroutine call to cctx_init */ 1400 /* inject a fake subroutine call to cctx_init */
1125 cctx_prepare (aTHX_ (coro_cctx *)arg); 1401 cctx_prepare (aTHX);
1126 1402
1127 /* cctx_run is the alternative tail of transfer() */ 1403 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX); 1404 transfer_tail (aTHX);
1129 1405
1130 /* somebody or something will hit me for both perl_run and PL_restartop */ 1406 /* somebody or something will hit me for both perl_run and PL_restartop */
1131 PL_restartop = PL_op; 1407 PL_restartop = PL_op;
1132 perl_run (PL_curinterp); 1408 perl_run (PL_curinterp);
1409 /*
1410 * Unfortunately, there is no way to get at the return values of the
1411 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1412 * runtime errors here, as this is just a random interpreter, not a thread.
1413 */
1133 1414
1134 /* 1415 /*
1135 * If perl-run returns we assume exit() was being called or the coro 1416 * If perl-run returns we assume exit() was being called or the coro
1136 * fell off the end, which seems to be the only valid (non-bug) 1417 * fell off the end, which seems to be the only valid (non-bug)
1137 * reason for perl_run to return. We try to exit by jumping to the 1418 * reason for perl_run to return. We try to exit by jumping to the
1138 * bootstrap-time "top" top_env, as we cannot restore the "main" 1419 * bootstrap-time "top" top_env, as we cannot restore the "main"
1139 * coroutine as Coro has no such concept 1420 * coroutine as Coro has no such concept.
1421 * This actually isn't valid with the pthread backend, but OSes requiring
1422 * that backend are too broken to do it in a standards-compliant way.
1140 */ 1423 */
1141 PL_top_env = main_top_env; 1424 PL_top_env = main_top_env;
1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1425 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 } 1426 }
1144} 1427}
… …
1221cctx_destroy (coro_cctx *cctx) 1504cctx_destroy (coro_cctx *cctx)
1222{ 1505{
1223 if (!cctx) 1506 if (!cctx)
1224 return; 1507 return;
1225 1508
1509 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1510
1226 --cctx_count; 1511 --cctx_count;
1227 coro_destroy (&cctx->cctx); 1512 coro_destroy (&cctx->cctx);
1228 1513
1229 /* coro_transfer creates new, empty cctx's */ 1514 /* coro_transfer creates new, empty cctx's */
1230 if (cctx->sptr) 1515 if (cctx->sptr)
… …
1293 /* TODO: throwing up here is considered harmful */ 1578 /* TODO: throwing up here is considered harmful */
1294 1579
1295 if (expect_true (prev != next)) 1580 if (expect_true (prev != next))
1296 { 1581 {
1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1582 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1583 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1299 1584
1300 if (expect_false (next->flags & CF_RUNNING))
1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1302
1303 if (expect_false (next->flags & CF_DESTROYED)) 1585 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1586 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1305 1587
1306#if !PERL_VERSION_ATLEAST (5,10,0) 1588#if !PERL_VERSION_ATLEAST (5,10,0)
1307 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1589 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1590 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif 1591#endif
… …
1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1597transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1316{ 1598{
1317 dSTACKLEVEL; 1599 dSTACKLEVEL;
1318 1600
1319 /* sometimes transfer is only called to set idle_sp */ 1601 /* sometimes transfer is only called to set idle_sp */
1320 if (expect_false (!next)) 1602 if (expect_false (!prev))
1321 { 1603 {
1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1604 cctx_current->idle_sp = STACKLEVEL;
1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1605 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1324 } 1606 }
1325 else if (expect_true (prev != next)) 1607 else if (expect_true (prev != next))
1326 { 1608 {
1327 coro_cctx *prev__cctx; 1609 coro_cctx *cctx_prev;
1328 1610
1329 if (expect_false (prev->flags & CF_NEW)) 1611 if (expect_false (prev->flags & CF_NEW))
1330 { 1612 {
1331 /* create a new empty/source context */ 1613 /* create a new empty/source context */
1332 prev->cctx = cctx_new_empty ();
1333 prev->flags &= ~CF_NEW; 1614 prev->flags &= ~CF_NEW;
1334 prev->flags |= CF_RUNNING; 1615 prev->flags |= CF_RUNNING;
1335 } 1616 }
1336 1617
1337 prev->flags &= ~CF_RUNNING; 1618 prev->flags &= ~CF_RUNNING;
… …
1343 if (expect_false (next->flags & CF_NEW)) 1624 if (expect_false (next->flags & CF_NEW))
1344 { 1625 {
1345 /* need to start coroutine */ 1626 /* need to start coroutine */
1346 next->flags &= ~CF_NEW; 1627 next->flags &= ~CF_NEW;
1347 /* setup coroutine call */ 1628 /* setup coroutine call */
1348 coro_setup (aTHX_ next); 1629 init_perl (aTHX_ next);
1349 } 1630 }
1350 else 1631 else
1351 load_perl (aTHX_ next); 1632 load_perl (aTHX_ next);
1352 1633
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */ 1634 /* possibly untie and reuse the cctx */
1356 if (expect_true ( 1635 if (expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel 1636 cctx_current->idle_sp == STACKLEVEL
1358 && !(prev__cctx->flags & CC_TRACE) 1637 && !(cctx_current->flags & CC_TRACE)
1359 && !force_cctx 1638 && !force_cctx
1360 )) 1639 ))
1361 { 1640 {
1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1641 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1642 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1364 1643
1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1644 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1645 /* without this the next cctx_get might destroy the running cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1646 if (expect_false (CCTX_EXPIRED (cctx_current)))
1370 if (!next->cctx) 1647 if (expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1648 next->cctx = cctx_get (aTHX);
1372 1649
1373 cctx_put (prev__cctx); 1650 cctx_put (cctx_current);
1374 } 1651 }
1652 else
1653 prev->cctx = cctx_current;
1375 1654
1376 ++next->usecount; 1655 ++next->usecount;
1377 1656
1378 if (expect_true (!next->cctx)) 1657 cctx_prev = cctx_current;
1379 next->cctx = cctx_get (aTHX); 1658 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1380 1659
1381 if (expect_false (prev__cctx != next->cctx)) 1660 next->cctx = 0;
1661
1662 if (expect_false (cctx_prev != cctx_current))
1382 { 1663 {
1383 prev__cctx->top_env = PL_top_env; 1664 cctx_prev->top_env = PL_top_env;
1384 PL_top_env = next->cctx->top_env; 1665 PL_top_env = cctx_current->top_env;
1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1666 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1386 } 1667 }
1387 1668
1388 transfer_tail (aTHX); 1669 transfer_tail (aTHX);
1389 } 1670 }
1390} 1671}
… …
1392#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1673#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1393#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1674#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1394 1675
1395/** high level stuff ********************************************************/ 1676/** high level stuff ********************************************************/
1396 1677
1397static int 1678static void
1398coro_state_destroy (pTHX_ struct coro *coro) 1679coro_state_destroy (pTHX_ struct coro *coro)
1399{ 1680{
1400 if (coro->flags & CF_DESTROYED) 1681 if (coro->flags & CF_DESTROYED)
1401 return 0; 1682 return;
1402 1683
1403 if (coro->on_destroy)
1404 coro->on_destroy (aTHX_ coro); 1684 slf_destroy (aTHX_ coro);
1405 1685
1406 coro->flags |= CF_DESTROYED; 1686 coro->flags |= CF_DESTROYED;
1407 1687
1408 if (coro->flags & CF_READY) 1688 if (coro->flags & CF_READY)
1409 { 1689 {
… …
1412 --coro_nready; 1692 --coro_nready;
1413 } 1693 }
1414 else 1694 else
1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1695 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1416 1696
1417 if (coro->mainstack && coro->mainstack != main_mainstack) 1697 if (coro->mainstack
1418 { 1698 && coro->mainstack != main_mainstack
1419 struct coro temp; 1699 && coro->slot
1420 1700 && !PL_dirty)
1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1422
1423 save_perl (aTHX_ &temp);
1424 load_perl (aTHX_ coro); 1701 destroy_perl (aTHX_ coro);
1425
1426 coro_destruct (aTHX_ coro);
1427
1428 load_perl (aTHX_ &temp);
1429
1430 coro->slot = 0;
1431 }
1432
1433 cctx_destroy (coro->cctx);
1434 SvREFCNT_dec (coro->args);
1435 1702
1436 if (coro->next) coro->next->prev = coro->prev; 1703 if (coro->next) coro->next->prev = coro->prev;
1437 if (coro->prev) coro->prev->next = coro->next; 1704 if (coro->prev) coro->prev->next = coro->next;
1438 if (coro == coro_first) coro_first = coro->next; 1705 if (coro == coro_first) coro_first = coro->next;
1439 1706
1440 return 1; 1707 cctx_destroy (coro->cctx);
1708 SvREFCNT_dec (coro->startcv);
1709 SvREFCNT_dec (coro->args);
1710 SvREFCNT_dec (coro->swap_sv);
1711 SvREFCNT_dec (CORO_THROW);
1441} 1712}
1442 1713
1443static int 1714static int
1444coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1715coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1445{ 1716{
… …
1498/** Coro ********************************************************************/ 1769/** Coro ********************************************************************/
1499 1770
1500INLINE void 1771INLINE void
1501coro_enq (pTHX_ struct coro *coro) 1772coro_enq (pTHX_ struct coro *coro)
1502{ 1773{
1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1774 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1504}
1505 1775
1506INLINE SV * 1776 SvREFCNT_inc_NN (coro->hv);
1777
1778 coro->next_ready = 0;
1779 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1780 ready [1] = coro;
1781}
1782
1783INLINE struct coro *
1507coro_deq (pTHX) 1784coro_deq (pTHX)
1508{ 1785{
1509 int prio; 1786 int prio;
1510 1787
1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1788 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1512 if (AvFILLp (coro_ready [prio]) >= 0) 1789 {
1513 return av_shift (coro_ready [prio]); 1790 struct coro **ready = coro_ready [prio];
1791
1792 if (ready [0])
1793 {
1794 struct coro *coro = ready [0];
1795 ready [0] = coro->next_ready;
1796 return coro;
1797 }
1798 }
1514 1799
1515 return 0; 1800 return 0;
1801}
1802
1803static void
1804invoke_sv_ready_hook_helper (void)
1805{
1806 dTHX;
1807 dSP;
1808
1809 ENTER;
1810 SAVETMPS;
1811
1812 PUSHMARK (SP);
1813 PUTBACK;
1814 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1815
1816 FREETMPS;
1817 LEAVE;
1516} 1818}
1517 1819
1518static int 1820static int
1519api_ready (pTHX_ SV *coro_sv) 1821api_ready (pTHX_ SV *coro_sv)
1520{ 1822{
1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
1524
1525 if (SvROK (coro_sv))
1526 coro_sv = SvRV (coro_sv);
1527
1528 coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1529 1824
1530 if (coro->flags & CF_READY) 1825 if (coro->flags & CF_READY)
1531 return 0; 1826 return 0;
1532 1827
1533 coro->flags |= CF_READY; 1828 coro->flags |= CF_READY;
1534 1829
1535 sv_hook = coro_nready ? 0 : coro_readyhook;
1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1537
1538 coro_enq (aTHX_ coro); 1830 coro_enq (aTHX_ coro);
1539 ++coro_nready;
1540 1831
1541 if (sv_hook) 1832 if (!coro_nready++)
1542 { 1833 if (coroapi.readyhook)
1543 dSP; 1834 coroapi.readyhook ();
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
1558 1835
1559 return 1; 1836 return 1;
1560} 1837}
1561 1838
1562static int 1839static int
1563api_is_ready (pTHX_ SV *coro_sv) 1840api_is_ready (pTHX_ SV *coro_sv)
1564{ 1841{
1565 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1842 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1566} 1843}
1567 1844
1845/* expects to own a reference to next->hv */
1568INLINE void 1846INLINE void
1569prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1847prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1570{ 1848{
1571 SV *prev_sv, *next_sv;
1572
1573 for (;;)
1574 {
1575 next_sv = coro_deq (aTHX);
1576
1577 /* nothing to schedule: call the idle handler */
1578 if (expect_false (!next_sv))
1579 {
1580 dSP;
1581
1582 ENTER;
1583 SAVETMPS;
1584
1585 PUSHMARK (SP);
1586 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588
1589 FREETMPS;
1590 LEAVE;
1591 continue;
1592 }
1593
1594 ta->next = SvSTATE_hv (next_sv);
1595
1596 /* cannot transfer to destroyed coros, skip and look for next */
1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1598 {
1599 SvREFCNT_dec (next_sv);
1600 /* coro_nready has already been taken care of by destroy */
1601 continue;
1602 }
1603
1604 --coro_nready;
1605 break;
1606 }
1607
1608 /* free this only after the transfer */
1609 prev_sv = SvRV (coro_current); 1849 SV *prev_sv = SvRV (coro_current);
1850
1610 ta->prev = SvSTATE_hv (prev_sv); 1851 ta->prev = SvSTATE_hv (prev_sv);
1852 ta->next = next;
1853
1611 TRANSFER_CHECK (*ta); 1854 TRANSFER_CHECK (*ta);
1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1855
1613 ta->next->flags &= ~CF_READY;
1614 SvRV_set (coro_current, next_sv); 1856 SvRV_set (coro_current, (SV *)next->hv);
1615 1857
1616 free_coro_mortal (aTHX); 1858 free_coro_mortal (aTHX);
1617 coro_mortal = prev_sv; 1859 coro_mortal = prev_sv;
1618} 1860}
1619 1861
1862static void
1863prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1864{
1865 for (;;)
1866 {
1867 struct coro *next = coro_deq (aTHX);
1868
1869 if (expect_true (next))
1870 {
1871 /* cannot transfer to destroyed coros, skip and look for next */
1872 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1873 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1874 else
1875 {
1876 next->flags &= ~CF_READY;
1877 --coro_nready;
1878
1879 prepare_schedule_to (aTHX_ ta, next);
1880 break;
1881 }
1882 }
1883 else
1884 {
1885 /* nothing to schedule: call the idle handler */
1886 if (SvROK (sv_idle)
1887 && SvOBJECT (SvRV (sv_idle)))
1888 {
1889 if (SvRV (sv_idle) == SvRV (coro_current))
1890 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1891
1892 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1893 api_ready (aTHX_ SvRV (sv_idle));
1894 --coro_nready;
1895 }
1896 else
1897 {
1898 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1899 dSP;
1900
1901 ENTER;
1902 SAVETMPS;
1903
1904 PUSHMARK (SP);
1905 PUTBACK;
1906 call_sv (sv_idle, G_VOID | G_DISCARD);
1907
1908 FREETMPS;
1909 LEAVE;
1910 }
1911 }
1912 }
1913}
1914
1620INLINE void 1915INLINE void
1621prepare_cede (pTHX_ struct coro_transfer_args *ta) 1916prepare_cede (pTHX_ struct coro_transfer_args *ta)
1622{ 1917{
1623 api_ready (aTHX_ coro_current); 1918 api_ready (aTHX_ coro_current);
1624 prepare_schedule (aTHX_ ta); 1919 prepare_schedule (aTHX_ ta);
… …
1643{ 1938{
1644 struct coro_transfer_args ta; 1939 struct coro_transfer_args ta;
1645 1940
1646 prepare_schedule (aTHX_ &ta); 1941 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1); 1942 TRANSFER (ta, 1);
1943}
1944
1945static void
1946api_schedule_to (pTHX_ SV *coro_sv)
1947{
1948 struct coro_transfer_args ta;
1949 struct coro *next = SvSTATE (coro_sv);
1950
1951 SvREFCNT_inc_NN (coro_sv);
1952 prepare_schedule_to (aTHX_ &ta, next);
1648} 1953}
1649 1954
1650static int 1955static int
1651api_cede (pTHX) 1956api_cede (pTHX)
1652{ 1957{
… …
1681static void 1986static void
1682api_trace (pTHX_ SV *coro_sv, int flags) 1987api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 1988{
1684 struct coro *coro = SvSTATE (coro_sv); 1989 struct coro *coro = SvSTATE (coro_sv);
1685 1990
1991 if (coro->flags & CF_RUNNING)
1992 croak ("cannot enable tracing on a running coroutine, caught");
1993
1686 if (flags & CC_TRACE) 1994 if (flags & CC_TRACE)
1687 { 1995 {
1688 if (!coro->cctx) 1996 if (!coro->cctx)
1689 coro->cctx = cctx_new_run (); 1997 coro->cctx = cctx_new_run ();
1690 else if (!(coro->cctx->flags & CC_TRACE)) 1998 else if (!(coro->cctx->flags & CC_TRACE))
1691 croak ("cannot enable tracing on coroutine with custom stack,"); 1999 croak ("cannot enable tracing on coroutine with custom stack, caught");
1692 2000
1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2001 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694 } 2002 }
1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2003 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696 { 2004 {
… …
1699 if (coro->flags & CF_RUNNING) 2007 if (coro->flags & CF_RUNNING)
1700 PL_runops = RUNOPS_DEFAULT; 2008 PL_runops = RUNOPS_DEFAULT;
1701 else 2009 else
1702 coro->slot->runops = RUNOPS_DEFAULT; 2010 coro->slot->runops = RUNOPS_DEFAULT;
1703 } 2011 }
2012}
2013
2014static void
2015coro_call_on_destroy (pTHX_ struct coro *coro)
2016{
2017 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2018
2019 if (on_destroyp)
2020 {
2021 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2022 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2023 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2024
2025 while (AvFILLp (on_destroy) >= 0)
2026 {
2027 dSP; /* don't disturb outer sp */
2028 SV *cb = av_pop (on_destroy);
2029
2030 PUSHMARK (SP);
2031
2032 if (statusp)
2033 {
2034 int i;
2035 EXTEND (SP, AvFILLp (status) + 1);
2036
2037 for (i = 0; i <= AvFILLp (status); ++i)
2038 PUSHs (AvARRAY (status)[i]);
2039 }
2040
2041 PUTBACK;
2042 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2043 }
2044 }
2045}
2046
2047static void
2048coro_set_status (HV *coro_hv, SV **arg, int items)
2049{
2050 AV *av = newAV ();
2051
2052 /* items are actually not so common, so optimise for this case */
2053 if (items)
2054 {
2055 int i;
2056
2057 av_extend (av, items - 1);
2058
2059 for (i = 0; i < items; ++i)
2060 av_push (av, SvREFCNT_inc_NN (arg [i]));
2061 }
2062
2063 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2064}
2065
2066static void
2067slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2068{
2069 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2070 api_ready (aTHX_ sv_manager);
2071
2072 frame->prepare = prepare_schedule;
2073 frame->check = slf_check_repeat;
2074
2075 /* as a minor optimisation, we could unwind all stacks here */
2076 /* but that puts extra pressure on pp_slf, and is not worth much */
2077 /*coro_unwind_stacks (aTHX);*/
2078}
2079
2080static void
2081slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2082{
2083 HV *coro_hv = (HV *)SvRV (coro_current);
2084
2085 coro_set_status (coro_hv, arg, items);
2086 slf_init_terminate_cancel_common (frame, coro_hv);
2087}
2088
2089static void
2090slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2091{
2092 HV *coro_hv;
2093 struct coro *coro;
2094
2095 if (items <= 0)
2096 croak ("Coro::cancel called without coro object,");
2097
2098 coro = SvSTATE (arg [0]);
2099 coro_hv = coro->hv;
2100
2101 coro_set_status (coro_hv, arg + 1, items - 1);
2102
2103 if (expect_false (coro->flags & CF_NOCANCEL))
2104 {
2105 /* coro currently busy cancelling something, so just notify it */
2106 coro->slf_frame.data = (void *)coro;
2107
2108 frame->prepare = prepare_nop;
2109 frame->check = slf_check_nop;
2110 }
2111 else if (coro_hv == (HV *)SvRV (coro_current))
2112 {
2113 /* cancelling the current coro is allowed, and equals terminate */
2114 slf_init_terminate_cancel_common (frame, coro_hv);
2115 }
2116 else
2117 {
2118 struct coro *self = SvSTATE_current;
2119
2120 /* otherwise we cancel directly, purely for speed reasons
2121 * unfortunately, this requires some magic trickery, as
2122 * somebody else could cancel us, so we have to fight the cancellation.
2123 * this is ugly, and hopefully fully worth the extra speed.
2124 * besides, I can't get the slow-but-safe version working...
2125 */
2126 slf_frame.data = 0;
2127 self->flags |= CF_NOCANCEL;
2128
2129 coro_state_destroy (aTHX_ coro);
2130 coro_call_on_destroy (aTHX_ coro);
2131
2132 self->flags &= ~CF_NOCANCEL;
2133
2134 if (slf_frame.data)
2135 {
2136 /* while we were busy we have been cancelled, so terminate */
2137 slf_init_terminate_cancel_common (frame, self->hv);
2138 }
2139 else
2140 {
2141 frame->prepare = prepare_nop;
2142 frame->check = slf_check_nop;
2143 }
2144 }
2145}
2146
2147static int
2148slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2149{
2150 frame->prepare = 0;
2151 coro_unwind_stacks ();
2152
2153 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2154
2155 return 1;
2156}
2157
2158static int
2159safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2160{
2161 if (coro->cctx)
2162 croak ("coro inside C callback, unable to cancel at this time, caught");
2163
2164 if (coro->flags & CF_NEW)
2165 {
2166 coro_set_status (coro->hv, arg, items);
2167 coro_state_destroy (aTHX_ coro);
2168 coro_call_on_destroy (aTHX_ coro);
2169 }
2170 else
2171 {
2172 if (!coro->slf_frame.prepare)
2173 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2174
2175 slf_destroy (coro);
2176
2177 coro_set_status (coro->hv, arg, items);
2178 coro->slf_frame.prepare = prepare_nop;
2179 coro->slf_frame.check = slf_check_safe_cancel;
2180
2181 api_ready (aTHX_ coro->hv);
2182 }
2183
2184 return 1;
2185}
2186
2187/*****************************************************************************/
2188/* async pool handler */
2189
2190static int
2191slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2192{
2193 HV *hv = (HV *)SvRV (coro_current);
2194 struct coro *coro = (struct coro *)frame->data;
2195
2196 if (!coro->invoke_cb)
2197 return 1; /* loop till we have invoke */
2198 else
2199 {
2200 hv_store (hv, "desc", sizeof ("desc") - 1,
2201 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2202
2203 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2204
2205 {
2206 dSP;
2207 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2208 PUTBACK;
2209 }
2210
2211 SvREFCNT_dec (GvAV (PL_defgv));
2212 GvAV (PL_defgv) = coro->invoke_av;
2213 coro->invoke_av = 0;
2214
2215 return 0;
2216 }
2217}
2218
2219static void
2220slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2221{
2222 HV *hv = (HV *)SvRV (coro_current);
2223 struct coro *coro = SvSTATE_hv ((SV *)hv);
2224
2225 if (expect_true (coro->saved_deffh))
2226 {
2227 /* subsequent iteration */
2228 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2229 coro->saved_deffh = 0;
2230
2231 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2232 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2233 {
2234 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2235 return;
2236 }
2237 else
2238 {
2239 av_clear (GvAV (PL_defgv));
2240 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2241
2242 coro->prio = 0;
2243
2244 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2245 api_trace (aTHX_ coro_current, 0);
2246
2247 frame->prepare = prepare_schedule;
2248 av_push (av_async_pool, SvREFCNT_inc (hv));
2249 }
2250 }
2251 else
2252 {
2253 /* first iteration, simply fall through */
2254 frame->prepare = prepare_nop;
2255 }
2256
2257 frame->check = slf_check_pool_handler;
2258 frame->data = (void *)coro;
2259}
2260
2261/*****************************************************************************/
2262/* rouse callback */
2263
2264#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2265
2266static void
2267coro_rouse_callback (pTHX_ CV *cv)
2268{
2269 dXSARGS;
2270 SV *data = (SV *)S_GENSUB_ARG;
2271
2272 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2273 {
2274 /* first call, set args */
2275 SV *coro = SvRV (data);
2276 AV *av = newAV ();
2277
2278 SvRV_set (data, (SV *)av);
2279
2280 /* better take a full copy of the arguments */
2281 while (items--)
2282 av_store (av, items, newSVsv (ST (items)));
2283
2284 api_ready (aTHX_ coro);
2285 SvREFCNT_dec (coro);
2286 }
2287
2288 XSRETURN_EMPTY;
2289}
2290
2291static int
2292slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2293{
2294 SV *data = (SV *)frame->data;
2295
2296 if (CORO_THROW)
2297 return 0;
2298
2299 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2300 return 1;
2301
2302 /* now push all results on the stack */
2303 {
2304 dSP;
2305 AV *av = (AV *)SvRV (data);
2306 int i;
2307
2308 EXTEND (SP, AvFILLp (av) + 1);
2309 for (i = 0; i <= AvFILLp (av); ++i)
2310 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2311
2312 /* we have stolen the elements, so set length to zero and free */
2313 AvFILLp (av) = -1;
2314 av_undef (av);
2315
2316 PUTBACK;
2317 }
2318
2319 return 0;
2320}
2321
2322static void
2323slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2324{
2325 SV *cb;
2326
2327 if (items)
2328 cb = arg [0];
2329 else
2330 {
2331 struct coro *coro = SvSTATE_current;
2332
2333 if (!coro->rouse_cb)
2334 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2335
2336 cb = sv_2mortal (coro->rouse_cb);
2337 coro->rouse_cb = 0;
2338 }
2339
2340 if (!SvROK (cb)
2341 || SvTYPE (SvRV (cb)) != SVt_PVCV
2342 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2343 croak ("Coro::rouse_wait called with illegal callback argument,");
2344
2345 {
2346 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2347 SV *data = (SV *)S_GENSUB_ARG;
2348
2349 frame->data = (void *)data;
2350 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2351 frame->check = slf_check_rouse_wait;
2352 }
2353}
2354
2355static SV *
2356coro_new_rouse_cb (pTHX)
2357{
2358 HV *hv = (HV *)SvRV (coro_current);
2359 struct coro *coro = SvSTATE_hv (hv);
2360 SV *data = newRV_inc ((SV *)hv);
2361 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2362
2363 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2364 SvREFCNT_dec (data); /* magicext increases the refcount */
2365
2366 SvREFCNT_dec (coro->rouse_cb);
2367 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2368
2369 return cb;
1704} 2370}
1705 2371
1706/*****************************************************************************/ 2372/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */ 2373/* schedule-like-function opcode (SLF) */
1708 2374
… …
1758 frame->prepare = prepare_schedule; 2424 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop; 2425 frame->check = slf_check_nop;
1760} 2426}
1761 2427
1762static void 2428static void
2429slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2430{
2431 struct coro *next = (struct coro *)slf_frame.data;
2432
2433 SvREFCNT_inc_NN (next->hv);
2434 prepare_schedule_to (aTHX_ ta, next);
2435}
2436
2437static void
2438slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2439{
2440 if (!items)
2441 croak ("Coro::schedule_to expects a coroutine argument, caught");
2442
2443 frame->data = (void *)SvSTATE (arg [0]);
2444 frame->prepare = slf_prepare_schedule_to;
2445 frame->check = slf_check_nop;
2446}
2447
2448static void
2449slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2450{
2451 api_ready (aTHX_ SvRV (coro_current));
2452
2453 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2454}
2455
2456static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2457slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{ 2458{
1765 frame->prepare = prepare_cede; 2459 frame->prepare = prepare_cede;
1766 frame->check = slf_check_nop; 2460 frame->check = slf_check_nop;
1767} 2461}
… …
1769static void 2463static void
1770slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2464slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1771{ 2465{
1772 frame->prepare = prepare_cede_notself; 2466 frame->prepare = prepare_cede_notself;
1773 frame->check = slf_check_nop; 2467 frame->check = slf_check_nop;
2468}
2469
2470/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2471static void
2472slf_destroy (pTHX_ struct coro *coro)
2473{
2474 /* this callback is reserved for slf functions needing to do cleanup */
2475 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2476 coro->slf_frame.destroy (aTHX_ coro);
2477
2478 /*
2479 * The on_destroy above most likely is from an SLF call.
2480 * Since by definition the SLF call will not finish when we destroy
2481 * the coro, we will have to force-finish it here, otherwise
2482 * cleanup functions cannot call SLF functions.
2483 */
2484 coro->slf_frame.prepare = 0;
1774} 2485}
1775 2486
1776/* 2487/*
1777 * these not obviously related functions are all rolled into one 2488 * these not obviously related functions are all rolled into one
1778 * function to increase chances that they all will call transfer with the same 2489 * function to increase chances that they all will call transfer with the same
… …
1835 } 2546 }
1836 while (slf_frame.check (aTHX_ &slf_frame)); 2547 while (slf_frame.check (aTHX_ &slf_frame));
1837 2548
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2549 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839 2550
2551 /* exception handling */
2552 if (expect_false (CORO_THROW))
2553 {
2554 SV *exception = sv_2mortal (CORO_THROW);
2555
2556 CORO_THROW = 0;
2557 sv_setsv (ERRSV, exception);
2558 croak (0);
2559 }
2560
1840 /* return value handling - mostly like entersub */ 2561 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */ 2562 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR) 2563 if (GIMME_V == G_SCALAR)
1843 { 2564 {
1844 dSP; 2565 dSP;
… …
1850 bot [1] = *sp; 2571 bot [1] = *sp;
1851 2572
1852 SP = bot + 1; 2573 SP = bot + 1;
1853 2574
1854 PUTBACK; 2575 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 } 2576 }
1866 2577
1867 return NORMAL; 2578 return NORMAL;
1868} 2579}
1869 2580
… …
1897 if (PL_op->op_flags & OPf_STACKED) 2608 if (PL_op->op_flags & OPf_STACKED)
1898 { 2609 {
1899 if (items > slf_arga) 2610 if (items > slf_arga)
1900 { 2611 {
1901 slf_arga = items; 2612 slf_arga = items;
1902 free (slf_argv); 2613 Safefree (slf_argv);
1903 slf_argv = malloc (slf_arga * sizeof (SV *)); 2614 New (0, slf_argv, slf_arga, SV *);
1904 } 2615 }
1905 2616
1906 slf_argc = items; 2617 slf_argc = items;
1907 2618
1908 for (i = 0; i < items; ++i) 2619 for (i = 0; i < items; ++i)
… …
1910 } 2621 }
1911 else 2622 else
1912 slf_argc = 0; 2623 slf_argc = 0;
1913 2624
1914 PL_op->op_ppaddr = pp_slf; 2625 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2626 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1916 2627
1917 PL_op = (OP *)&slf_restore; 2628 PL_op = (OP *)&slf_restore;
2629}
2630
2631/*****************************************************************************/
2632/* dynamic wind */
2633
2634static void
2635on_enterleave_call (pTHX_ SV *cb)
2636{
2637 dSP;
2638
2639 PUSHSTACK;
2640
2641 PUSHMARK (SP);
2642 PUTBACK;
2643 call_sv (cb, G_VOID | G_DISCARD);
2644 SPAGAIN;
2645
2646 POPSTACK;
2647}
2648
2649static SV *
2650coro_avp_pop_and_free (pTHX_ AV **avp)
2651{
2652 AV *av = *avp;
2653 SV *res = av_pop (av);
2654
2655 if (AvFILLp (av) < 0)
2656 {
2657 *avp = 0;
2658 SvREFCNT_dec (av);
2659 }
2660
2661 return res;
2662}
2663
2664static void
2665coro_pop_on_enter (pTHX_ void *coro)
2666{
2667 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2668 SvREFCNT_dec (cb);
2669}
2670
2671static void
2672coro_pop_on_leave (pTHX_ void *coro)
2673{
2674 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2675 on_enterleave_call (aTHX_ sv_2mortal (cb));
1918} 2676}
1919 2677
1920/*****************************************************************************/ 2678/*****************************************************************************/
1921/* PerlIO::cede */ 2679/* PerlIO::cede */
1922 2680
… …
1991 PerlIOBuf_get_cnt, 2749 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt, 2750 PerlIOBuf_set_ptrcnt,
1993}; 2751};
1994 2752
1995/*****************************************************************************/ 2753/*****************************************************************************/
2754/* Coro::Semaphore & Coro::Signal */
2755
2756static SV *
2757coro_waitarray_new (pTHX_ int count)
2758{
2759 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2760 AV *av = newAV ();
2761 SV **ary;
2762
2763 /* unfortunately, building manually saves memory */
2764 Newx (ary, 2, SV *);
2765 AvALLOC (av) = ary;
2766#if PERL_VERSION_ATLEAST (5,10,0)
2767 AvARRAY (av) = ary;
2768#else
2769 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2770 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2771 SvPVX ((SV *)av) = (char *)ary;
2772#endif
2773 AvMAX (av) = 1;
2774 AvFILLp (av) = 0;
2775 ary [0] = newSViv (count);
2776
2777 return newRV_noinc ((SV *)av);
2778}
2779
1996/* Coro::Semaphore */ 2780/* semaphore */
1997 2781
1998static void 2782static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2783coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{ 2784{
2001 SV *count_sv = AvARRAY (av)[0]; 2785 SV *count_sv = AvARRAY (av)[0];
… …
2013 AvARRAY (av)[0] = AvARRAY (av)[1]; 2797 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv; 2798 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av); 2799 cb = av_shift (av);
2016 2800
2017 if (SvOBJECT (cb)) 2801 if (SvOBJECT (cb))
2802 {
2018 api_ready (aTHX_ cb); 2803 api_ready (aTHX_ cb);
2019 else 2804 --count;
2020 croak ("callbacks not yet supported"); 2805 }
2806 else if (SvTYPE (cb) == SVt_PVCV)
2807 {
2808 dSP;
2809 PUSHMARK (SP);
2810 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2811 PUTBACK;
2812 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2813 }
2021 2814
2022 SvREFCNT_dec (cb); 2815 SvREFCNT_dec (cb);
2023
2024 --count;
2025 } 2816 }
2026} 2817}
2027 2818
2028static void 2819static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2820coro_semaphore_destroy (pTHX_ struct coro *coro)
2030{ 2821{
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2822 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2823 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2033} 2824}
2034 2825
2035static int 2826static int
2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2827slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2037{ 2828{
2038 AV *av = (AV *)frame->data; 2829 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0]; 2830 SV *count_sv = AvARRAY (av)[0];
2040 2831
2832 /* if we are about to throw, don't actually acquire the lock, just throw */
2833 if (CORO_THROW)
2834 return 0;
2041 if (SvIVX (count_sv) > 0) 2835 else if (SvIVX (count_sv) > 0)
2042 { 2836 {
2043 SvSTATE_current->on_destroy = 0; 2837 frame->destroy = 0;
2838
2839 if (acquire)
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2840 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2841 else
2842 coro_semaphore_adjust (aTHX_ av, 0);
2843
2045 return 0; 2844 return 0;
2046 } 2845 }
2047 else 2846 else
2048 { 2847 {
2049 int i; 2848 int i;
… …
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2857 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2059 return 1; 2858 return 1;
2060 } 2859 }
2061} 2860}
2062 2861
2063static void 2862static int
2863slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2864{
2865 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2866}
2867
2868static int
2869slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2870{
2871 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2872}
2873
2874static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2875slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{ 2876{
2066 AV *av = (AV *)SvRV (arg [0]); 2877 AV *av = (AV *)SvRV (arg [0]);
2067 2878
2068 if (SvIVX (AvARRAY (av)[0]) > 0) 2879 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 { 2880 {
2070 frame->data = (void *)av; 2881 frame->data = (void *)av;
2071 frame->prepare = prepare_nop; 2882 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 } 2883 }
2074 else 2884 else
2075 { 2885 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2886 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077 2887
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2888 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule; 2889 frame->prepare = prepare_schedule;
2080
2081 /* to avoid race conditions when a woken-up coro gets terminated */ 2890 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2891 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2892 frame->destroy = coro_semaphore_destroy;
2085 } 2893 }
2894}
2086 2895
2896static void
2897slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2898{
2899 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2087 frame->check = slf_check_semaphore_down; 2900 frame->check = slf_check_semaphore_down;
2088
2089} 2901}
2090 2902
2091/*****************************************************************************/ 2903static void
2092/* gensub: simple closure generation utility */ 2904slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{ 2905{
2102 CV *cv = (CV *)newSV (0); 2906 if (items >= 2)
2907 {
2908 /* callback form */
2909 AV *av = (AV *)SvRV (arg [0]);
2910 SV *cb_cv = s_get_cv_croak (arg [1]);
2103 2911
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 2912 av_push (av, SvREFCNT_inc_NN (cb_cv));
2105 2913
2106 CvANON_on (cv); 2914 if (SvIVX (AvARRAY (av)[0]) > 0)
2107 CvISXSUB_on (cv); 2915 coro_semaphore_adjust (aTHX_ av, 0);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110 2916
2111 return newRV_noinc ((SV *)cv); 2917 frame->prepare = prepare_nop;
2918 frame->check = slf_check_nop;
2919 }
2920 else
2921 {
2922 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2923 frame->check = slf_check_semaphore_wait;
2924 }
2925}
2926
2927/* signal */
2928
2929static void
2930coro_signal_wake (pTHX_ AV *av, int count)
2931{
2932 SvIVX (AvARRAY (av)[0]) = 0;
2933
2934 /* now signal count waiters */
2935 while (count > 0 && AvFILLp (av) > 0)
2936 {
2937 SV *cb;
2938
2939 /* swap first two elements so we can shift a waiter */
2940 cb = AvARRAY (av)[0];
2941 AvARRAY (av)[0] = AvARRAY (av)[1];
2942 AvARRAY (av)[1] = cb;
2943
2944 cb = av_shift (av);
2945
2946 if (SvTYPE (cb) == SVt_PVCV)
2947 {
2948 dSP;
2949 PUSHMARK (SP);
2950 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2951 PUTBACK;
2952 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2953 }
2954 else
2955 {
2956 api_ready (aTHX_ cb);
2957 sv_setiv (cb, 0); /* signal waiter */
2958 }
2959
2960 SvREFCNT_dec (cb);
2961
2962 --count;
2963 }
2964}
2965
2966static int
2967slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2968{
2969 /* if we are about to throw, also stop waiting */
2970 return SvROK ((SV *)frame->data) && !CORO_THROW;
2971}
2972
2973static void
2974slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2975{
2976 AV *av = (AV *)SvRV (arg [0]);
2977
2978 if (items >= 2)
2979 {
2980 SV *cb_cv = s_get_cv_croak (arg [1]);
2981 av_push (av, SvREFCNT_inc_NN (cb_cv));
2982
2983 if (SvIVX (AvARRAY (av)[0]))
2984 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2985
2986 frame->prepare = prepare_nop;
2987 frame->check = slf_check_nop;
2988 }
2989 else if (SvIVX (AvARRAY (av)[0]))
2990 {
2991 SvIVX (AvARRAY (av)[0]) = 0;
2992 frame->prepare = prepare_nop;
2993 frame->check = slf_check_nop;
2994 }
2995 else
2996 {
2997 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2998
2999 av_push (av, waiter);
3000
3001 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3002 frame->prepare = prepare_schedule;
3003 frame->check = slf_check_signal_wait;
3004 }
2112} 3005}
2113 3006
2114/*****************************************************************************/ 3007/*****************************************************************************/
2115/* Coro::AIO */ 3008/* Coro::AIO */
2116 3009
… …
2127 3020
2128static void 3021static void
2129coro_aio_callback (pTHX_ CV *cv) 3022coro_aio_callback (pTHX_ CV *cv)
2130{ 3023{
2131 dXSARGS; 3024 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG; 3025 AV *state = (AV *)S_GENSUB_ARG;
2133 SV *coro = av_pop (state); 3026 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state)); 3027 SV *data_sv = newSV (sizeof (struct io_state));
2135 3028
2136 av_extend (state, items); 3029 av_extend (state, items - 1);
2137 3030
2138 sv_upgrade (data_sv, SVt_PV); 3031 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state)); 3032 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv); 3033 SvPOK_only (data_sv);
2141 3034
… …
2166static int 3059static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3060slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{ 3061{
2169 AV *state = (AV *)frame->data; 3062 AV *state = (AV *)frame->data;
2170 3063
3064 /* if we are about to throw, return early */
3065 /* this does not cancel the aio request, but at least */
3066 /* it quickly returns */
3067 if (CORO_THROW)
3068 return 0;
3069
2171 /* one element that is an RV? repeat! */ 3070 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3071 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2173 return 1; 3072 return 1;
2174 3073
2175 /* restore status */ 3074 /* restore status */
… …
2245 3144
2246 for (i = 0; i < items; ++i) 3145 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]); 3146 PUSHs (arg [i]);
2248 3147
2249 /* now push the callback closure */ 3148 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3149 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251 3150
2252 /* now call the AIO function - we assume our request is uncancelable */ 3151 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK; 3152 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD); 3153 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 } 3154 }
2256 3155
2257 /* now that the requets is going, we loop toll we have a result */ 3156 /* now that the request is going, we loop till we have a result */
2258 frame->data = (void *)state; 3157 frame->data = (void *)state;
2259 frame->prepare = prepare_schedule; 3158 frame->prepare = prepare_schedule;
2260 frame->check = slf_check_aio_req; 3159 frame->check = slf_check_aio_req;
2261} 3160}
2262 3161
… …
2269 3168
2270 XSRETURN_EMPTY; 3169 XSRETURN_EMPTY;
2271} 3170}
2272 3171
2273/*****************************************************************************/ 3172/*****************************************************************************/
3173
3174#if CORO_CLONE
3175# include "clone.c"
3176#endif
3177
3178/*****************************************************************************/
3179
3180static SV *
3181coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3182{
3183 SV *coro_sv;
3184 struct coro *coro;
3185 MAGIC *mg;
3186 HV *hv;
3187 SV *cb;
3188 int i;
3189
3190 if (argc > 0)
3191 {
3192 cb = s_get_cv_croak (argv [0]);
3193
3194 if (!is_coro)
3195 {
3196 if (CvISXSUB (cb))
3197 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3198
3199 if (!CvROOT (cb))
3200 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3201 }
3202 }
3203
3204 Newz (0, coro, 1, struct coro);
3205 coro->args = newAV ();
3206 coro->flags = CF_NEW;
3207
3208 if (coro_first) coro_first->prev = coro;
3209 coro->next = coro_first;
3210 coro_first = coro;
3211
3212 coro->hv = hv = newHV ();
3213 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3214 mg->mg_flags |= MGf_DUP;
3215 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3216
3217 if (argc > 0)
3218 {
3219 av_extend (coro->args, argc + is_coro - 1);
3220
3221 if (is_coro)
3222 {
3223 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3224 cb = (SV *)cv_coro_run;
3225 }
3226
3227 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3228
3229 for (i = 1; i < argc; i++)
3230 av_push (coro->args, newSVsv (argv [i]));
3231 }
3232
3233 return coro_sv;
3234}
2274 3235
2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3236MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2276 3237
2277PROTOTYPES: DISABLE 3238PROTOTYPES: DISABLE
2278 3239
… …
2283 coro_thx = PERL_GET_CONTEXT; 3244 coro_thx = PERL_GET_CONTEXT;
2284# endif 3245# endif
2285#endif 3246#endif
2286 BOOT_PAGESIZE; 3247 BOOT_PAGESIZE;
2287 3248
3249 cctx_current = cctx_new_empty ();
3250
2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3251 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3252 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290 3253
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3254 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2292 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3255 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2311 3274
2312 { 3275 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3276 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314 3277
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3278 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf, 3279 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2317 newSVpv ("coro_slf", 0), 0);
2318 3280
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3281 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf, 3282 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2321 newSVpv ("coro schedule like function", 0), 0);
2322 } 3283 }
2323 3284
2324 coroapi.ver = CORO_API_VERSION; 3285 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION; 3286 coroapi.rev = CORO_API_REVISION;
2326 3287
… …
2331 coroapi.prepare_nop = prepare_nop; 3292 coroapi.prepare_nop = prepare_nop;
2332 coroapi.prepare_schedule = prepare_schedule; 3293 coroapi.prepare_schedule = prepare_schedule;
2333 coroapi.prepare_cede = prepare_cede; 3294 coroapi.prepare_cede = prepare_cede;
2334 coroapi.prepare_cede_notself = prepare_cede_notself; 3295 coroapi.prepare_cede_notself = prepare_cede_notself;
2335 3296
2336 { 3297 time_init (aTHX);
2337 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2338 3298
2339 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2343 }
2344
2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3299 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2346} 3300}
2347 3301
2348SV * 3302SV *
2349new (char *klass, ...) 3303new (SV *klass, ...)
3304 ALIAS:
3305 Coro::new = 1
2350 CODE: 3306 CODE:
2351{ 3307 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2352 struct coro *coro; 3308 OUTPUT:
2353 MAGIC *mg;
2354 HV *hv;
2355 int i;
2356
2357 Newz (0, coro, 1, struct coro);
2358 coro->args = newAV ();
2359 coro->flags = CF_NEW;
2360
2361 if (coro_first) coro_first->prev = coro;
2362 coro->next = coro_first;
2363 coro_first = coro;
2364
2365 coro->hv = hv = newHV ();
2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2369
2370 av_extend (coro->args, items - 1);
2371 for (i = 1; i < items; i++)
2372 av_push (coro->args, newSVsv (ST (i)));
2373}
2374 OUTPUT:
2375 RETVAL 3309 RETVAL
2376 3310
2377void 3311void
2378transfer (...) 3312transfer (...)
2379 PROTOTYPE: $$ 3313 PROTOTYPE: $$
2380 CODE: 3314 CODE:
2381 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3315 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2382 3316
2383bool
2384_destroy (SV *coro_sv)
2385 CODE:
2386 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2387 OUTPUT:
2388 RETVAL
2389
2390void 3317void
2391_exit (int code) 3318_exit (int code)
2392 PROTOTYPE: $ 3319 PROTOTYPE: $
2393 CODE: 3320 CODE:
2394 _exit (code); 3321 _exit (code);
3322
3323SV *
3324clone (Coro::State coro)
3325 CODE:
3326{
3327#if CORO_CLONE
3328 struct coro *ncoro = coro_clone (aTHX_ coro);
3329 MAGIC *mg;
3330 /* TODO: too much duplication */
3331 ncoro->hv = newHV ();
3332 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3333 mg->mg_flags |= MGf_DUP;
3334 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3335#else
3336 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3337#endif
3338}
3339 OUTPUT:
3340 RETVAL
2395 3341
2396int 3342int
2397cctx_stacksize (int new_stacksize = 0) 3343cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$ 3344 PROTOTYPE: ;$
2399 CODE: 3345 CODE:
… …
2449 eval = 1 3395 eval = 1
2450 CODE: 3396 CODE:
2451{ 3397{
2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3398 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2453 { 3399 {
2454 struct coro temp; 3400 struct coro *current = SvSTATE_current;
3401 struct CoroSLF slf_save;
2455 3402
2456 if (!(coro->flags & CF_RUNNING)) 3403 if (current != coro)
2457 { 3404 {
2458 PUTBACK; 3405 PUTBACK;
2459 save_perl (aTHX_ &temp); 3406 save_perl (aTHX_ current);
2460 load_perl (aTHX_ coro); 3407 load_perl (aTHX_ coro);
3408 /* the coro is most likely in an active SLF call.
3409 * while not strictly required (the code we execute is
3410 * not allowed to call any SLF functions), it's cleaner
3411 * to reinitialise the slf_frame and restore it later.
3412 * This might one day allow us to actually do SLF calls
3413 * from code executed here.
3414 */
3415 slf_save = slf_frame;
3416 slf_frame.prepare = 0;
3417 SPAGAIN;
2461 } 3418 }
2462 3419
2463 {
2464 dSP;
2465 ENTER;
2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK; 3420 PUSHSTACK;
3421
2469 PUSHMARK (SP); 3422 PUSHMARK (SP);
3423 PUTBACK;
2470 3424
2471 if (ix) 3425 if (ix)
2472 eval_sv (coderef, 0); 3426 eval_sv (coderef, 0);
2473 else 3427 else
2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3428 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475 3429
2476 POPSTACK; 3430 POPSTACK;
2477 SPAGAIN; 3431 SPAGAIN;
2478 FREETMPS;
2479 LEAVE;
2480 PUTBACK;
2481 }
2482 3432
2483 if (!(coro->flags & CF_RUNNING)) 3433 if (current != coro)
2484 { 3434 {
3435 PUTBACK;
3436 slf_frame = slf_save;
2485 save_perl (aTHX_ coro); 3437 save_perl (aTHX_ coro);
2486 load_perl (aTHX_ &temp); 3438 load_perl (aTHX_ current);
2487 SPAGAIN; 3439 SPAGAIN;
2488 } 3440 }
2489 } 3441 }
2490} 3442}
2491 3443
… …
2495 ALIAS: 3447 ALIAS:
2496 is_ready = CF_READY 3448 is_ready = CF_READY
2497 is_running = CF_RUNNING 3449 is_running = CF_RUNNING
2498 is_new = CF_NEW 3450 is_new = CF_NEW
2499 is_destroyed = CF_DESTROYED 3451 is_destroyed = CF_DESTROYED
3452 is_suspended = CF_SUSPENDED
2500 CODE: 3453 CODE:
2501 RETVAL = boolSV (coro->flags & ix); 3454 RETVAL = boolSV (coro->flags & ix);
2502 OUTPUT: 3455 OUTPUT:
2503 RETVAL 3456 RETVAL
2504 3457
2505void 3458void
2506throw (Coro::State self, SV *throw = &PL_sv_undef) 3459throw (Coro::State self, SV *exception = &PL_sv_undef)
2507 PROTOTYPE: $;$ 3460 PROTOTYPE: $;$
2508 CODE: 3461 CODE:
2509{ 3462{
2510 struct coro *current = SvSTATE_current; 3463 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw; 3464 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2512 SvREFCNT_dec (*throwp); 3465 SvREFCNT_dec (*exceptionp);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3466 SvGETMAGIC (exception);
3467 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2514} 3468}
2515 3469
2516void 3470void
2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3471api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2518 PROTOTYPE: $;$ 3472 PROTOTYPE: $;$
… …
2520 3474
2521SV * 3475SV *
2522has_cctx (Coro::State coro) 3476has_cctx (Coro::State coro)
2523 PROTOTYPE: $ 3477 PROTOTYPE: $
2524 CODE: 3478 CODE:
2525 RETVAL = boolSV (!!coro->cctx); 3479 /* maybe manage the running flag differently */
3480 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2526 OUTPUT: 3481 OUTPUT:
2527 RETVAL 3482 RETVAL
2528 3483
2529int 3484int
2530is_traced (Coro::State coro) 3485is_traced (Coro::State coro)
… …
2550 3505
2551void 3506void
2552force_cctx () 3507force_cctx ()
2553 PROTOTYPE: 3508 PROTOTYPE:
2554 CODE: 3509 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0; 3510 cctx_current->idle_sp = 0;
2556 3511
2557void 3512void
2558swap_defsv (Coro::State self) 3513swap_defsv (Coro::State self)
2559 PROTOTYPE: $ 3514 PROTOTYPE: $
2560 ALIAS: 3515 ALIAS:
… …
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3523 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569 3524
2570 SV *tmp = *src; *src = *dst; *dst = tmp; 3525 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 } 3526 }
2572 3527
3528void
3529cancel (Coro::State self)
3530 CODE:
3531 coro_state_destroy (aTHX_ self);
3532
3533SV *
3534enable_times (int enabled = enable_times)
3535 CODE:
3536{
3537 RETVAL = boolSV (enable_times);
3538
3539 if (enabled != enable_times)
3540 {
3541 enable_times = enabled;
3542
3543 coro_times_update ();
3544 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3545 }
3546}
3547 OUTPUT:
3548 RETVAL
3549
3550void
3551times (Coro::State self)
3552 PPCODE:
3553{
3554 struct coro *current = SvSTATE (coro_current);
3555
3556 if (expect_false (current == self))
3557 {
3558 coro_times_update ();
3559 coro_times_add (SvSTATE (coro_current));
3560 }
3561
3562 EXTEND (SP, 2);
3563 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3564 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3565
3566 if (expect_false (current == self))
3567 coro_times_sub (SvSTATE (coro_current));
3568}
3569
3570void
3571swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3572 CODE:
3573{
3574 struct coro *current = SvSTATE_current;
3575
3576 if (current == coro)
3577 SWAP_SVS (current);
3578
3579 if (!coro->swap_sv)
3580 coro->swap_sv = newAV ();
3581
3582 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3583 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3584
3585 if (current == coro)
3586 SWAP_SVS (current);
3587}
3588
2573 3589
2574MODULE = Coro::State PACKAGE = Coro 3590MODULE = Coro::State PACKAGE = Coro
2575 3591
2576BOOT: 3592BOOT:
2577{ 3593{
2578 int i;
2579
2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3594 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3595 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583 3596 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3597 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2585 SvREADONLY_on (coro_current); 3598 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3599 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3600 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3601 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2586 3602
3603 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3604 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3605 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3606 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3607
2587 coro_stash = gv_stashpv ("Coro", TRUE); 3608 coro_stash = gv_stashpv ("Coro", TRUE);
2588 3609
2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3610 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3611 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3612 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3613 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2593 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3614 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2594 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3615 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2595
2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2597 coro_ready[i] = newAV ();
2598 3616
2599 { 3617 {
2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3618 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2601 3619
2602 coroapi.schedule = api_schedule; 3620 coroapi.schedule = api_schedule;
3621 coroapi.schedule_to = api_schedule_to;
2603 coroapi.cede = api_cede; 3622 coroapi.cede = api_cede;
2604 coroapi.cede_notself = api_cede_notself; 3623 coroapi.cede_notself = api_cede_notself;
2605 coroapi.ready = api_ready; 3624 coroapi.ready = api_ready;
2606 coroapi.is_ready = api_is_ready; 3625 coroapi.is_ready = api_is_ready;
2607 coroapi.nready = coro_nready; 3626 coroapi.nready = coro_nready;
2608 coroapi.current = coro_current; 3627 coroapi.current = coro_current;
2609 3628
2610 GCoroAPI = &coroapi; 3629 /*GCoroAPI = &coroapi;*/
2611 sv_setiv (sv, (IV)&coroapi); 3630 sv_setiv (sv, (IV)&coroapi);
2612 SvREADONLY_on (sv); 3631 SvREADONLY_on (sv);
2613 } 3632 }
2614} 3633}
3634
3635SV *
3636async (...)
3637 PROTOTYPE: &@
3638 CODE:
3639 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3640 api_ready (aTHX_ RETVAL);
3641 OUTPUT:
3642 RETVAL
3643
3644void
3645_destroy (Coro::State coro)
3646 CODE:
3647 /* used by the manager thread */
3648 coro_state_destroy (aTHX_ coro);
3649 coro_call_on_destroy (aTHX_ coro);
3650
3651void
3652terminate (...)
3653 CODE:
3654 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3655
3656void
3657cancel (...)
3658 CODE:
3659 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3660
3661int
3662safe_cancel (Coro::State self, ...)
3663 C_ARGS: aTHX_ self, &ST (1), items - 1
2615 3664
2616void 3665void
2617schedule (...) 3666schedule (...)
2618 CODE: 3667 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3668 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3669
3670void
3671schedule_to (...)
3672 CODE:
3673 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3674
3675void
3676cede_to (...)
3677 CODE:
3678 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2620 3679
2621void 3680void
2622cede (...) 3681cede (...)
2623 CODE: 3682 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede); 3683 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2638void 3697void
2639_set_readyhook (SV *hook) 3698_set_readyhook (SV *hook)
2640 PROTOTYPE: $ 3699 PROTOTYPE: $
2641 CODE: 3700 CODE:
2642 SvREFCNT_dec (coro_readyhook); 3701 SvREFCNT_dec (coro_readyhook);
3702 SvGETMAGIC (hook);
3703 if (SvOK (hook))
3704 {
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3705 coro_readyhook = newSVsv (hook);
3706 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3707 }
3708 else
3709 {
3710 coro_readyhook = 0;
3711 CORO_READYHOOK = 0;
3712 }
2644 3713
2645int 3714int
2646prio (Coro::State coro, int newprio = 0) 3715prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$ 3716 PROTOTYPE: $;$
2648 ALIAS: 3717 ALIAS:
… …
2654 if (items > 1) 3723 if (items > 1)
2655 { 3724 {
2656 if (ix) 3725 if (ix)
2657 newprio = coro->prio - newprio; 3726 newprio = coro->prio - newprio;
2658 3727
2659 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3728 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2660 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3729 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2661 3730
2662 coro->prio = newprio; 3731 coro->prio = newprio;
2663 } 3732 }
2664} 3733}
2665 OUTPUT: 3734 OUTPUT:
… …
2679 CODE: 3748 CODE:
2680 RETVAL = coro_nready; 3749 RETVAL = coro_nready;
2681 OUTPUT: 3750 OUTPUT:
2682 RETVAL 3751 RETVAL
2683 3752
2684# for async_pool speedup
2685void 3753void
2686_pool_1 (SV *cb) 3754suspend (Coro::State self)
3755 PROTOTYPE: $
2687 CODE: 3756 CODE:
2688{ 3757 self->flags |= CF_SUSPENDED;
2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
2691 AV *defav = GvAV (PL_defgv);
2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693 AV *invoke_av;
2694 int i, len;
2695 3758
2696 if (!invoke) 3759void
3760resume (Coro::State self)
3761 PROTOTYPE: $
3762 CODE:
3763 self->flags &= ~CF_SUSPENDED;
3764
3765void
3766_pool_handler (...)
3767 CODE:
3768 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3769
3770void
3771async_pool (SV *cv, ...)
3772 PROTOTYPE: &@
3773 PPCODE:
3774{
3775 HV *hv = (HV *)av_pop (av_async_pool);
3776 AV *av = newAV ();
3777 SV *cb = ST (0);
3778 int i;
3779
3780 av_extend (av, items - 2);
3781 for (i = 1; i < items; ++i)
3782 av_push (av, SvREFCNT_inc_NN (ST (i)));
3783
3784 if ((SV *)hv == &PL_sv_undef)
2697 { 3785 {
2698 SV *old = PL_diehook; 3786 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2699 PL_diehook = 0; 3787 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2700 SvREFCNT_dec (old); 3788 SvREFCNT_dec (sv);
2701 croak ("\3async_pool terminate\2\n");
2702 } 3789 }
2703 3790
2704 SvREFCNT_dec (coro->saved_deffh);
2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707 hv_store (hv, "desc", sizeof ("desc") - 1,
2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710 invoke_av = (AV *)SvRV (invoke);
2711 len = av_len (invoke_av);
2712
2713 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715 if (len > 0)
2716 { 3791 {
2717 av_fill (defav, len - 1); 3792 struct coro *coro = SvSTATE_hv (hv);
2718 for (i = 0; i < len; ++i) 3793
2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3794 assert (!coro->invoke_cb);
3795 assert (!coro->invoke_av);
3796 coro->invoke_cb = SvREFCNT_inc (cb);
3797 coro->invoke_av = av;
2720 } 3798 }
3799
3800 api_ready (aTHX_ (SV *)hv);
3801
3802 if (GIMME_V != G_VOID)
3803 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3804 else
3805 SvREFCNT_dec (hv);
2721} 3806}
3807
3808SV *
3809rouse_cb ()
3810 PROTOTYPE:
3811 CODE:
3812 RETVAL = coro_new_rouse_cb (aTHX);
3813 OUTPUT:
3814 RETVAL
2722 3815
2723void 3816void
2724_pool_2 (SV *cb) 3817rouse_wait (...)
3818 PROTOTYPE: ;$
3819 PPCODE:
3820 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3821
3822void
3823on_enter (SV *block)
3824 ALIAS:
3825 on_leave = 1
3826 PROTOTYPE: &
2725 CODE: 3827 CODE:
2726{ 3828{
2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv); 3829 struct coro *coro = SvSTATE_current;
3830 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2729 3831
2730 sv_setsv (cb, &PL_sv_undef); 3832 block = s_get_cv_croak (block);
2731 3833
2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3834 if (!*avp)
2733 coro->saved_deffh = 0; 3835 *avp = newAV ();
2734 3836
2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3837 av_push (*avp, SvREFCNT_inc (block));
2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
2741 croak ("\3async_pool terminate\2\n");
2742 }
2743 3838
2744 av_clear (GvAV (PL_defgv)); 3839 if (!ix)
2745 hv_store (hv, "desc", sizeof ("desc") - 1, 3840 on_enterleave_call (aTHX_ block);
2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747 3841
2748 coro->prio = 0; 3842 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2749 3843 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3844 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2751 api_trace (aTHX_ coro_current, 0);
2752
2753 av_push (av_async_pool, newSVsv (coro_current));
2754} 3845}
2755 3846
2756 3847
2757MODULE = Coro::State PACKAGE = PerlIO::cede 3848MODULE = Coro::State PACKAGE = PerlIO::cede
2758 3849
… …
2761 3852
2762 3853
2763MODULE = Coro::State PACKAGE = Coro::Semaphore 3854MODULE = Coro::State PACKAGE = Coro::Semaphore
2764 3855
2765SV * 3856SV *
2766new (SV *klass, SV *count_ = 0) 3857new (SV *klass, SV *count = 0)
2767 CODE: 3858 CODE:
2768{ 3859{
2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3860 int semcnt = 1;
2770 AV *av = newAV ();
2771 SV **ary;
2772 3861
2773 /* unfortunately, building manually saves memory */ 3862 if (count)
2774 Newx (ary, 2, SV *); 3863 {
2775 AvALLOC (av) = ary; 3864 SvGETMAGIC (count);
2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2780 3865
2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3866 if (SvOK (count))
3867 semcnt = SvIV (count);
3868 }
3869
3870 RETVAL = sv_bless (
3871 coro_waitarray_new (aTHX_ semcnt),
3872 GvSTASH (CvGV (cv))
3873 );
2782} 3874}
3875 OUTPUT:
3876 RETVAL
3877
3878# helper for Coro::Channel and others
3879SV *
3880_alloc (int count)
3881 CODE:
3882 RETVAL = coro_waitarray_new (aTHX_ count);
2783 OUTPUT: 3883 OUTPUT:
2784 RETVAL 3884 RETVAL
2785 3885
2786SV * 3886SV *
2787count (SV *self) 3887count (SV *self)
… …
2796 adjust = 1 3896 adjust = 1
2797 CODE: 3897 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3898 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799 3899
2800void 3900void
2801down (SV *self) 3901down (...)
2802 CODE: 3902 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3903 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3904
3905void
3906wait (...)
3907 CODE:
3908 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2804 3909
2805void 3910void
2806try (SV *self) 3911try (SV *self)
2807 PPCODE: 3912 PPCODE:
2808{ 3913{
… …
2820 XSRETURN_NO; 3925 XSRETURN_NO;
2821} 3926}
2822 3927
2823void 3928void
2824waiters (SV *self) 3929waiters (SV *self)
2825 CODE: 3930 PPCODE:
2826{ 3931{
2827 AV *av = (AV *)SvRV (self); 3932 AV *av = (AV *)SvRV (self);
3933 int wcount = AvFILLp (av) + 1 - 1;
2828 3934
2829 if (GIMME_V == G_SCALAR) 3935 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3936 XPUSHs (sv_2mortal (newSViv (wcount)));
2831 else 3937 else
2832 { 3938 {
2833 int i; 3939 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1); 3940 EXTEND (SP, wcount);
2835 for (i = 1; i <= AvFILLp (av); ++i) 3941 for (i = 1; i <= wcount; ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 3942 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 } 3943 }
2838} 3944}
3945
3946MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3947
3948void
3949_may_delete (SV *sem, int count, int extra_refs)
3950 PPCODE:
3951{
3952 AV *av = (AV *)SvRV (sem);
3953
3954 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3955 && AvFILLp (av) == 0 /* no waiters, just count */
3956 && SvIV (AvARRAY (av)[0]) == count)
3957 XSRETURN_YES;
3958
3959 XSRETURN_NO;
3960}
3961
3962MODULE = Coro::State PACKAGE = Coro::Signal
3963
3964SV *
3965new (SV *klass)
3966 CODE:
3967 RETVAL = sv_bless (
3968 coro_waitarray_new (aTHX_ 0),
3969 GvSTASH (CvGV (cv))
3970 );
3971 OUTPUT:
3972 RETVAL
3973
3974void
3975wait (...)
3976 CODE:
3977 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3978
3979void
3980broadcast (SV *self)
3981 CODE:
3982{
3983 AV *av = (AV *)SvRV (self);
3984 coro_signal_wake (aTHX_ av, AvFILLp (av));
3985}
3986
3987void
3988send (SV *self)
3989 CODE:
3990{
3991 AV *av = (AV *)SvRV (self);
3992
3993 if (AvFILLp (av))
3994 coro_signal_wake (aTHX_ av, 1);
3995 else
3996 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3997}
3998
3999IV
4000awaited (SV *self)
4001 CODE:
4002 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4003 OUTPUT:
4004 RETVAL
2839 4005
2840 4006
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent 4007MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842 4008
2843BOOT: 4009BOOT:
… …
2871 4037
2872void 4038void
2873_register (char *target, char *proto, SV *req) 4039_register (char *target, char *proto, SV *req)
2874 CODE: 4040 CODE:
2875{ 4041{
2876 HV *st; 4042 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */ 4043 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4044 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto); 4045 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4046 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883} 4047}
2884 4048
4049MODULE = Coro::State PACKAGE = Coro::Select
4050
4051void
4052patch_pp_sselect ()
4053 CODE:
4054 if (!coro_old_pp_sselect)
4055 {
4056 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4057 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4058 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4059 }
4060
4061void
4062unpatch_pp_sselect ()
4063 CODE:
4064 if (coro_old_pp_sselect)
4065 {
4066 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4067 coro_old_pp_sselect = 0;
4068 }
4069

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