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Comparing Coro/Coro/State.xs (file contents):
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC vs.
Revision 1.404 by root, Fri Jun 10 12:27:02 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"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#ifdef HAVE_MMAP
… …
51#endif 63#endif
52 64
53/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 66static int cctx_max_idle = 4;
55 67
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 69# undef CORO_STACKGUARD
108#endif 70#endif
109 71
110#ifndef CORO_STACKGUARD 72#ifndef CORO_STACKGUARD
… …
117#endif 79#endif
118 80
119/* The next macros try to return the current stack pointer, in an as 81/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 82 * portable way as possible. */
121#if __GNUC__ >= 4 83#if __GNUC__ >= 4
84# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 85# define STACKLEVEL __builtin_frame_address (0)
123#else 86#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 87# define dSTACKLEVEL volatile void *stacklevel
88# define STACKLEVEL ((void *)&stacklevel)
125#endif 89#endif
126 90
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 91#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 92
144#include "CoroAPI.h" 93#include "CoroAPI.h"
94#define GCoroAPI (&coroapi) /* very sneaky */
145 95
146#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
147# if CORO_PTHREAD 97# if CORO_PTHREAD
148static void *coro_thx; 98static void *coro_thx;
149# endif 99# endif
150#endif 100#endif
151 101
102#ifdef __linux
103# include <time.h> /* for timespec */
104# include <syscall.h> /* for SYS_* */
105# ifdef SYS_clock_gettime
106# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
107# define CORO_CLOCK_MONOTONIC 1
108# define CORO_CLOCK_THREAD_CPUTIME_ID 3
109# endif
110#endif
111
152static double (*nvtime)(); /* so why doesn't it take void? */ 112static double (*nvtime)(); /* so why doesn't it take void? */
113static void (*u2time)(pTHX_ UV ret[2]);
114
115/* we hijack an hopefully unused CV flag for our purposes */
116#define CVf_SLF 0x4000
117static OP *pp_slf (pTHX);
118static void slf_destroy (pTHX_ struct coro *coro);
153 119
154static U32 cctx_gen; 120static U32 cctx_gen;
155static size_t cctx_stacksize = CORO_STACKSIZE; 121static size_t cctx_stacksize = CORO_STACKSIZE;
156static struct CoroAPI coroapi; 122static struct CoroAPI coroapi;
157static AV *main_mainstack; /* used to differentiate between $main and others */ 123static AV *main_mainstack; /* used to differentiate between $main and others */
158static JMPENV *main_top_env; 124static JMPENV *main_top_env;
159static HV *coro_state_stash, *coro_stash; 125static HV *coro_state_stash, *coro_stash;
160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 126static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
161 127
128static AV *av_destroy; /* destruction queue */
129static SV *sv_manager; /* the manager coro */
130static SV *sv_idle; /* $Coro::idle */
131
162static GV *irsgv; /* $/ */ 132static GV *irsgv; /* $/ */
163static GV *stdoutgv; /* *STDOUT */ 133static GV *stdoutgv; /* *STDOUT */
164static SV *rv_diehook; 134static SV *rv_diehook;
165static SV *rv_warnhook; 135static SV *rv_warnhook;
166static HV *hv_sig; /* %SIG */ 136static HV *hv_sig; /* %SIG */
167 137
168/* async_pool helper stuff */ 138/* async_pool helper stuff */
169static SV *sv_pool_rss; 139static SV *sv_pool_rss;
170static SV *sv_pool_size; 140static SV *sv_pool_size;
141static SV *sv_async_pool_idle; /* description string */
171static AV *av_async_pool; 142static AV *av_async_pool; /* idle pool */
143static SV *sv_Coro; /* class string */
144static CV *cv_pool_handler;
172 145
173/* Coro::AnyEvent */ 146/* Coro::AnyEvent */
174static SV *sv_activity; 147static SV *sv_activity;
175 148
149/* enable processtime/realtime profiling */
150static char enable_times;
151typedef U32 coro_ts[2];
152static coro_ts time_real, time_cpu;
153static char times_valid;
154
176static struct coro_cctx *cctx_first; 155static struct coro_cctx *cctx_first;
177static int cctx_count, cctx_idle; 156static int cctx_count, cctx_idle;
178 157
179enum { 158enum
159{
180 CC_MAPPED = 0x01, 160 CC_MAPPED = 0x01,
181 CC_NOREUSE = 0x02, /* throw this away after tracing */ 161 CC_NOREUSE = 0x02, /* throw this away after tracing */
182 CC_TRACE = 0x04, 162 CC_TRACE = 0x04,
183 CC_TRACE_SUB = 0x08, /* trace sub calls */ 163 CC_TRACE_SUB = 0x08, /* trace sub calls */
184 CC_TRACE_LINE = 0x10, /* trace each statement */ 164 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
205 int valgrind_id; 185 int valgrind_id;
206#endif 186#endif
207 unsigned char flags; 187 unsigned char flags;
208} coro_cctx; 188} coro_cctx;
209 189
190static coro_cctx *cctx_current; /* the currently running cctx */
191
192/*****************************************************************************/
193
194static MGVTBL coro_state_vtbl;
195
210enum { 196enum
197{
211 CF_RUNNING = 0x0001, /* coroutine is running */ 198 CF_RUNNING = 0x0001, /* coroutine is running */
212 CF_READY = 0x0002, /* coroutine is ready */ 199 CF_READY = 0x0002, /* coroutine is ready */
213 CF_NEW = 0x0004, /* has never been switched to */ 200 CF_NEW = 0x0004, /* has never been switched to */
214 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 201 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
202 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
203 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
215}; 204};
216 205
217/* the structure where most of the perl state is stored, overlaid on the cxstack */ 206/* the structure where most of the perl state is stored, overlaid on the cxstack */
218typedef struct 207typedef struct
219{ 208{
220 SV *defsv; 209 SV *defsv;
221 AV *defav; 210 AV *defav;
222 SV *errsv; 211 SV *errsv;
223 SV *irsgv; 212 SV *irsgv;
213 HV *hinthv;
224#define VAR(name,type) type name; 214#define VAR(name,type) type name;
225# include "state.h" 215# include "state.h"
226#undef VAR 216#undef VAR
227} perl_slots; 217} perl_slots;
228 218
219// how many context stack entries do we need for perl_slots
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 220#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 221
231/* this is a structure representing a perl-level coroutine */ 222/* this is a structure representing a perl-level coroutine */
232struct coro { 223struct coro
224{
233 /* the C coroutine allocated to this perl coroutine, if any */ 225 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 226 coro_cctx *cctx;
227
228 /* ready queue */
229 struct coro *next_ready;
235 230
236 /* state data */ 231 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */ 232 struct CoroSLF slf_frame; /* saved slf frame */
238 AV *mainstack; 233 AV *mainstack;
239 perl_slots *slot; /* basically the saved sp */ 234 perl_slots *slot; /* basically the saved sp */
240 235
236 CV *startcv; /* the CV to execute */
241 AV *args; /* data associated with this coroutine (initial args) */ 237 AV *args; /* data associated with this coroutine (initial args) */
242 int refcnt; /* coroutines are refcounted, yes */
243 int flags; /* CF_ flags */ 238 int flags; /* CF_ flags */
244 HV *hv; /* the perl hash associated with this coro, if any */ 239 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
246 240
247 /* statistics */ 241 /* statistics */
248 int usecount; /* number of transfers to this coro */ 242 int usecount; /* number of transfers to this coro */
249 243
250 /* coro process data */ 244 /* coro process data */
251 int prio; 245 int prio;
252 SV *throw; /* exception to be thrown */ 246 SV *except; /* exception to be thrown */
247 SV *rouse_cb; /* last rouse callback */
248 AV *on_destroy; /* callbacks or coros to notify on destroy */
249 AV *status; /* the exit status list */
253 250
254 /* async_pool */ 251 /* async_pool */
255 SV *saved_deffh; 252 SV *saved_deffh;
253 SV *invoke_cb;
254 AV *invoke_av;
255
256 /* on_enter/on_leave */
257 AV *on_enter;
258 AV *on_leave;
259
260 /* swap_sv */
261 AV *swap_sv;
262
263 /* times */
264 coro_ts t_cpu, t_real;
256 265
257 /* linked list */ 266 /* linked list */
258 struct coro *next, *prev; 267 struct coro *next, *prev;
259}; 268};
260 269
261typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
262typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
263 272
264/* the following variables are effectively part of the perl context */ 273/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */ 274/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */ 275/* the main reason we don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */ 276static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
269 277
270/** Coro ********************************************************************/ 278/** Coro ********************************************************************/
271 279
272#define PRIO_MAX 3 280#define CORO_PRIO_MAX 3
273#define PRIO_HIGH 1 281#define CORO_PRIO_HIGH 1
274#define PRIO_NORMAL 0 282#define CORO_PRIO_NORMAL 0
275#define PRIO_LOW -1 283#define CORO_PRIO_LOW -1
276#define PRIO_IDLE -3 284#define CORO_PRIO_IDLE -3
277#define PRIO_MIN -4 285#define CORO_PRIO_MIN -4
278 286
279/* for Coro.pm */ 287/* for Coro.pm */
280static SV *coro_current; 288static SV *coro_current;
281static SV *coro_readyhook; 289static SV *coro_readyhook;
282static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 290static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
291static CV *cv_coro_run;
283static struct coro *coro_first; 292static struct coro *coro_first;
284#define coro_nready coroapi.nready 293#define coro_nready coroapi.nready
285 294
295/** Coro::Select ************************************************************/
296
297static OP *(*coro_old_pp_sselect) (pTHX);
298static SV *coro_select_select;
299
300/* horrible hack, but if it works... */
301static OP *
302coro_pp_sselect (pTHX)
303{
304 dSP;
305 PUSHMARK (SP - 4); /* fake argument list */
306 XPUSHs (coro_select_select);
307 PUTBACK;
308
309 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
310 PL_op->op_flags |= OPf_STACKED;
311 PL_op->op_private = 0;
312 return PL_ppaddr [OP_ENTERSUB](aTHX);
313}
314
315/** time stuff **************************************************************/
316
317#ifdef HAS_GETTIMEOFDAY
318
319ECB_INLINE void
320coro_u2time (pTHX_ UV ret[2])
321{
322 struct timeval tv;
323 gettimeofday (&tv, 0);
324
325 ret [0] = tv.tv_sec;
326 ret [1] = tv.tv_usec;
327}
328
329ECB_INLINE double
330coro_nvtime ()
331{
332 struct timeval tv;
333 gettimeofday (&tv, 0);
334
335 return tv.tv_sec + tv.tv_usec * 1e-6;
336}
337
338ECB_INLINE void
339time_init (pTHX)
340{
341 nvtime = coro_nvtime;
342 u2time = coro_u2time;
343}
344
345#else
346
347ECB_INLINE void
348time_init (pTHX)
349{
350 SV **svp;
351
352 require_pv ("Time/HiRes.pm");
353
354 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
355
356 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
357 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
358
359 nvtime = INT2PTR (double (*)(), SvIV (*svp));
360
361 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
362 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
363}
364
365#endif
366
286/** lowlevel stuff **********************************************************/ 367/** lowlevel stuff **********************************************************/
287 368
288static SV * 369static SV * ecb_noinline
289coro_get_sv (pTHX_ const char *name, int create) 370coro_get_sv (pTHX_ const char *name, int create)
290{ 371{
291#if PERL_VERSION_ATLEAST (5,10,0) 372#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 373 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_sv (name, create); 374 get_sv (name, create);
294#endif 375#endif
295 return get_sv (name, create); 376 return get_sv (name, create);
296} 377}
297 378
298static AV * 379static AV * ecb_noinline
299coro_get_av (pTHX_ const char *name, int create) 380coro_get_av (pTHX_ const char *name, int create)
300{ 381{
301#if PERL_VERSION_ATLEAST (5,10,0) 382#if PERL_VERSION_ATLEAST (5,10,0)
302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 383 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
303 get_av (name, create); 384 get_av (name, create);
304#endif 385#endif
305 return get_av (name, create); 386 return get_av (name, create);
306} 387}
307 388
308static HV * 389static HV * ecb_noinline
309coro_get_hv (pTHX_ const char *name, int create) 390coro_get_hv (pTHX_ const char *name, int create)
310{ 391{
311#if PERL_VERSION_ATLEAST (5,10,0) 392#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 393 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_hv (name, create); 394 get_hv (name, create);
314#endif 395#endif
315 return get_hv (name, create); 396 return get_hv (name, create);
316} 397}
317 398
318static AV * 399ECB_INLINE void
400coro_times_update ()
401{
402#ifdef coro_clock_gettime
403 struct timespec ts;
404
405 ts.tv_sec = ts.tv_nsec = 0;
406 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
407 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
408
409 ts.tv_sec = ts.tv_nsec = 0;
410 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
411 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
412#else
413 dTHX;
414 UV tv[2];
415
416 u2time (aTHX_ tv);
417 time_real [0] = tv [0];
418 time_real [1] = tv [1] * 1000;
419#endif
420}
421
422ECB_INLINE void
423coro_times_add (struct coro *c)
424{
425 c->t_real [1] += time_real [1];
426 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
427 c->t_real [0] += time_real [0];
428
429 c->t_cpu [1] += time_cpu [1];
430 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
431 c->t_cpu [0] += time_cpu [0];
432}
433
434ECB_INLINE void
435coro_times_sub (struct coro *c)
436{
437 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
438 c->t_real [1] -= time_real [1];
439 c->t_real [0] -= time_real [0];
440
441 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
442 c->t_cpu [1] -= time_cpu [1];
443 c->t_cpu [0] -= time_cpu [0];
444}
445
446/*****************************************************************************/
447/* magic glue */
448
449#define CORO_MAGIC_type_cv 26
450#define CORO_MAGIC_type_state PERL_MAGIC_ext
451
452#define CORO_MAGIC_NN(sv, type) \
453 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
454 ? SvMAGIC (sv) \
455 : mg_find (sv, type))
456
457#define CORO_MAGIC(sv, type) \
458 (ecb_expect_true (SvMAGIC (sv)) \
459 ? CORO_MAGIC_NN (sv, type) \
460 : 0)
461
462#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
463#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
464
465ECB_INLINE MAGIC *
466SvSTATEhv_p (pTHX_ SV *coro)
467{
468 MAGIC *mg;
469
470 if (ecb_expect_true (
471 SvTYPE (coro) == SVt_PVHV
472 && (mg = CORO_MAGIC_state (coro))
473 && mg->mg_virtual == &coro_state_vtbl
474 ))
475 return mg;
476
477 return 0;
478}
479
480ECB_INLINE struct coro *
481SvSTATE_ (pTHX_ SV *coro)
482{
483 MAGIC *mg;
484
485 if (SvROK (coro))
486 coro = SvRV (coro);
487
488 mg = SvSTATEhv_p (aTHX_ coro);
489 if (!mg)
490 croak ("Coro::State object required");
491
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
504ECB_INLINE AV *
319coro_clone_padlist (pTHX_ CV *cv) 505coro_derive_padlist (pTHX_ CV *cv)
320{ 506{
321 AV *padlist = CvPADLIST (cv); 507 AV *padlist = CvPADLIST (cv);
322 AV *newpadlist, *newpad; 508 AV *newpadlist, *newpad;
323 509
324 newpadlist = newAV (); 510 newpadlist = newAV ();
… …
329 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
330#endif 516#endif
331 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
332 --AvFILLp (padlist); 518 --AvFILLp (padlist);
333 519
334 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
335 av_store (newpadlist, 1, (SV *)newpad); 521 av_store (newpadlist, 1, (SV *)newpad);
336 522
337 return newpadlist; 523 return newpadlist;
338} 524}
339 525
340static void 526ECB_INLINE void
341free_padlist (pTHX_ AV *padlist) 527free_padlist (pTHX_ AV *padlist)
342{ 528{
343 /* may be during global destruction */ 529 /* may be during global destruction */
344 if (SvREFCNT (padlist)) 530 if (!IN_DESTRUCT)
345 { 531 {
346 I32 i = AvFILLp (padlist); 532 I32 i = AvFILLp (padlist);
347 while (i >= 0) 533
534 while (i > 0) /* special-case index 0 */
348 { 535 {
349 SV **svp = av_fetch (padlist, i--, FALSE); 536 /* we try to be extra-careful here */
350 if (svp) 537 AV *av = (AV *)AvARRAY (padlist)[i--];
351 { 538 I32 j = AvFILLp (av);
352 SV *sv; 539
353 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 540 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]);
542
543 AvFILLp (av) = -1;
354 SvREFCNT_dec (sv); 544 SvREFCNT_dec (av);
355
356 SvREFCNT_dec (*svp);
357 }
358 } 545 }
359 546
547 SvREFCNT_dec (AvARRAY (padlist)[0]);
548
549 AvFILLp (padlist) = -1;
360 SvREFCNT_dec ((SV*)padlist); 550 SvREFCNT_dec ((SV*)padlist);
361 } 551 }
362} 552}
363 553
364static int 554static int
365coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 555coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
366{ 556{
367 AV *padlist; 557 AV *padlist;
368 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;
369 563
370 /* casting is fun. */ 564 /* casting is fun. */
371 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
372 free_padlist (aTHX_ padlist); 566 free_padlist (aTHX_ padlist);
373 567
374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
375 569
376 return 0; 570 return 0;
377} 571}
378
379#define CORO_MAGIC_type_cv 26
380#define CORO_MAGIC_type_state PERL_MAGIC_ext
381 572
382static MGVTBL coro_cv_vtbl = { 573static MGVTBL coro_cv_vtbl = {
383 0, 0, 0, 0, 574 0, 0, 0, 0,
384 coro_cv_free 575 coro_cv_free
385}; 576};
386 577
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
392#define CORO_MAGIC(sv, type) \
393 (expect_true (SvMAGIC (sv)) \
394 ? CORO_MAGIC_NN (sv, type) \
395 : 0)
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
399
400INLINE struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
429
430/* the next two functions merely cache the padlists */ 578/* the next two functions merely cache the padlists */
431static void 579ECB_INLINE void
432get_padlist (pTHX_ CV *cv) 580get_padlist (pTHX_ CV *cv)
433{ 581{
434 MAGIC *mg = CORO_MAGIC_cv (cv); 582 MAGIC *mg = CORO_MAGIC_cv (cv);
435 AV *av; 583 AV *av;
436 584
437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 585 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 586 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
439 else 587 else
440 { 588 {
441#if CORO_PREFER_PERL_FUNCTIONS 589#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 590 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 591 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 592 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 593 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 594 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 595 SvREFCNT_dec (cp);
448#else 596#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 598#endif
451 } 599 }
452} 600}
453 601
454static void 602ECB_INLINE void
455put_padlist (pTHX_ CV *cv) 603put_padlist (pTHX_ CV *cv)
456{ 604{
457 MAGIC *mg = CORO_MAGIC_cv (cv); 605 MAGIC *mg = CORO_MAGIC_cv (cv);
458 AV *av; 606 AV *av;
459 607
460 if (expect_false (!mg)) 608 if (ecb_expect_false (!mg))
461 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);
462 610
463 av = (AV *)mg->mg_obj; 611 av = (AV *)mg->mg_obj;
464 612
465 if (expect_false (AvFILLp (av) >= AvMAX (av))) 613 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1); 614 av_extend (av, AvFILLp (av) + 1);
467 615
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 617}
470 618
471/** 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 (ecb_expect_false ((coro)->swap_sv)) \
670 swap_svs (aTHX_ (coro))
671
672static void
673on_enterleave_call (pTHX_ SV *cb);
472 674
473static void 675static void
474load_perl (pTHX_ Coro__State c) 676load_perl (pTHX_ Coro__State c)
475{ 677{
476 perl_slots *slot = c->slot; 678 perl_slots *slot = c->slot;
477 c->slot = 0; 679 c->slot = 0;
478 680
479 PL_mainstack = c->mainstack; 681 PL_mainstack = c->mainstack;
480 682
481 GvSV (PL_defgv) = slot->defsv; 683 GvSV (PL_defgv) = slot->defsv;
482 GvAV (PL_defgv) = slot->defav; 684 GvAV (PL_defgv) = slot->defav;
483 GvSV (PL_errgv) = slot->errsv; 685 GvSV (PL_errgv) = slot->errsv;
484 GvSV (irsgv) = slot->irsgv; 686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
485 688
486 #define VAR(name,type) PL_ ## name = slot->name; 689 #define VAR(name,type) PL_ ## name = slot->name;
487 # include "state.h" 690 # include "state.h"
488 #undef VAR 691 #undef VAR
489 692
… …
491 dSP; 694 dSP;
492 695
493 CV *cv; 696 CV *cv;
494 697
495 /* now do the ugly restore mess */ 698 /* now do the ugly restore mess */
496 while (expect_true (cv = (CV *)POPs)) 699 while (ecb_expect_true (cv = (CV *)POPs))
497 { 700 {
498 put_padlist (aTHX_ cv); /* mark this padlist as available */ 701 put_padlist (aTHX_ cv); /* mark this padlist as available */
499 CvDEPTH (cv) = PTR2IV (POPs); 702 CvDEPTH (cv) = PTR2IV (POPs);
500 CvPADLIST (cv) = (AV *)POPs; 703 CvPADLIST (cv) = (AV *)POPs;
501 } 704 }
502 705
503 PUTBACK; 706 PUTBACK;
504 } 707 }
505 708
506 slf_frame = c->slf_frame; 709 slf_frame = c->slf_frame;
507 coro_throw = c->throw; 710 CORO_THROW = c->except;
711
712 if (ecb_expect_false (enable_times))
713 {
714 if (ecb_expect_false (!times_valid))
715 coro_times_update ();
716
717 coro_times_sub (c);
718 }
719
720 if (ecb_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);
508} 729}
509 730
510static void 731static void
511save_perl (pTHX_ Coro__State c) 732save_perl (pTHX_ Coro__State c)
512{ 733{
513 c->throw = coro_throw; 734 SWAP_SVS (c);
735
736 if (ecb_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 (ecb_expect_false (enable_times))
747 {
748 coro_times_update (); times_valid = 1;
749 coro_times_add (c);
750 }
751
752 c->except = CORO_THROW;
514 c->slf_frame = slf_frame; 753 c->slf_frame = slf_frame;
515 754
516 { 755 {
517 dSP; 756 dSP;
518 I32 cxix = cxstack_ix; 757 I32 cxix = cxstack_ix;
… …
526 765
527 XPUSHs (Nullsv); 766 XPUSHs (Nullsv);
528 /* this loop was inspired by pp_caller */ 767 /* this loop was inspired by pp_caller */
529 for (;;) 768 for (;;)
530 { 769 {
531 while (expect_true (cxix >= 0)) 770 while (ecb_expect_true (cxix >= 0))
532 { 771 {
533 PERL_CONTEXT *cx = &ccstk[cxix--]; 772 PERL_CONTEXT *cx = &ccstk[cxix--];
534 773
535 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 774 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
536 { 775 {
537 CV *cv = cx->blk_sub.cv; 776 CV *cv = cx->blk_sub.cv;
538 777
539 if (expect_true (CvDEPTH (cv))) 778 if (ecb_expect_true (CvDEPTH (cv)))
540 { 779 {
541 EXTEND (SP, 3); 780 EXTEND (SP, 3);
542 PUSHs ((SV *)CvPADLIST (cv)); 781 PUSHs ((SV *)CvPADLIST (cv));
543 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 782 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
544 PUSHs ((SV *)cv); 783 PUSHs ((SV *)cv);
… …
547 get_padlist (aTHX_ cv); 786 get_padlist (aTHX_ cv);
548 } 787 }
549 } 788 }
550 } 789 }
551 790
552 if (expect_true (top_si->si_type == PERLSI_MAIN)) 791 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
553 break; 792 break;
554 793
555 top_si = top_si->si_prev; 794 top_si = top_si->si_prev;
556 ccstk = top_si->si_cxstack; 795 ccstk = top_si->si_cxstack;
557 cxix = top_si->si_cxix; 796 cxix = top_si->si_cxix;
… …
559 798
560 PUTBACK; 799 PUTBACK;
561 } 800 }
562 801
563 /* allocate some space on the context stack for our purposes */ 802 /* allocate some space on the context stack for our purposes */
564 /* we manually unroll here, as usually 2 slots is enough */ 803 if (ecb_expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
565 if (SLOT_COUNT >= 1) CXINC;
566 if (SLOT_COUNT >= 2) CXINC;
567 if (SLOT_COUNT >= 3) CXINC;
568 { 804 {
569 int i; 805 unsigned int i;
806
570 for (i = 3; i < SLOT_COUNT; ++i) 807 for (i = 0; i < SLOT_COUNT; ++i)
571 CXINC; 808 CXINC;
572 } 809
573 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 810 cxstack_ix -= SLOT_COUNT; /* undo allocation */
811 }
574 812
575 c->mainstack = PL_mainstack; 813 c->mainstack = PL_mainstack;
576 814
577 { 815 {
578 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 816 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
579 817
580 slot->defav = GvAV (PL_defgv); 818 slot->defav = GvAV (PL_defgv);
581 slot->defsv = DEFSV; 819 slot->defsv = DEFSV;
582 slot->errsv = ERRSV; 820 slot->errsv = ERRSV;
583 slot->irsgv = GvSV (irsgv); 821 slot->irsgv = GvSV (irsgv);
822 slot->hinthv = GvHV (PL_hintgv);
584 823
585 #define VAR(name,type) slot->name = PL_ ## name; 824 #define VAR(name,type) slot->name = PL_ ## name;
586 # include "state.h" 825 # include "state.h"
587 #undef VAR 826 #undef VAR
588 } 827 }
… …
593 * of perl.c:init_stacks, except that it uses less memory 832 * of perl.c:init_stacks, except that it uses less memory
594 * on the (sometimes correct) assumption that coroutines do 833 * on the (sometimes correct) assumption that coroutines do
595 * not usually need a lot of stackspace. 834 * not usually need a lot of stackspace.
596 */ 835 */
597#if CORO_PREFER_PERL_FUNCTIONS 836#if CORO_PREFER_PERL_FUNCTIONS
598# define coro_init_stacks init_stacks 837# define coro_init_stacks(thx) init_stacks ()
599#else 838#else
600static void 839static void
601coro_init_stacks (pTHX) 840coro_init_stacks (pTHX)
602{ 841{
603 PL_curstackinfo = new_stackinfo(32, 8); 842 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
604 PL_curstackinfo->si_type = PERLSI_MAIN; 843 PL_curstackinfo->si_type = PERLSI_MAIN;
605 PL_curstack = PL_curstackinfo->si_stack; 844 PL_curstack = PL_curstackinfo->si_stack;
606 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 845 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
607 846
608 PL_stack_base = AvARRAY(PL_curstack); 847 PL_stack_base = AvARRAY(PL_curstack);
… …
666#if !PERL_VERSION_ATLEAST (5,10,0) 905#if !PERL_VERSION_ATLEAST (5,10,0)
667 Safefree (PL_retstack); 906 Safefree (PL_retstack);
668#endif 907#endif
669} 908}
670 909
910#define CORO_RSS \
911 rss += sizeof (SYM (curstackinfo)); \
912 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
913 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
914 rss += SYM (tmps_max) * sizeof (SV *); \
915 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
916 rss += SYM (scopestack_max) * sizeof (I32); \
917 rss += SYM (savestack_max) * sizeof (ANY);
918
671static size_t 919static size_t
672coro_rss (pTHX_ struct coro *coro) 920coro_rss (pTHX_ struct coro *coro)
673{ 921{
674 size_t rss = sizeof (*coro); 922 size_t rss = sizeof (*coro);
675 923
676 if (coro->mainstack) 924 if (coro->mainstack)
677 { 925 {
678 perl_slots tmp_slot;
679 perl_slots *slot;
680
681 if (coro->flags & CF_RUNNING) 926 if (coro->flags & CF_RUNNING)
682 { 927 {
683 slot = &tmp_slot; 928 #define SYM(sym) PL_ ## sym
684 929 CORO_RSS;
685 #define VAR(name,type) slot->name = PL_ ## name;
686 # include "state.h"
687 #undef VAR 930 #undef SYM
688 } 931 }
689 else 932 else
690 slot = coro->slot;
691
692 if (slot)
693 { 933 {
694 rss += sizeof (slot->curstackinfo); 934 #define SYM(sym) coro->slot->sym
695 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 935 CORO_RSS;
696 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 936 #undef SYM
697 rss += slot->tmps_max * sizeof (SV *);
698 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
699 rss += slot->scopestack_max * sizeof (I32);
700 rss += slot->savestack_max * sizeof (ANY);
701
702#if !PERL_VERSION_ATLEAST (5,10,0)
703 rss += slot->retstack_max * sizeof (OP *);
704#endif
705 } 937 }
706 } 938 }
707 939
708 return rss; 940 return rss;
709} 941}
… …
722#endif 954#endif
723 955
724/* 956/*
725 * This overrides the default magic get method of %SIG elements. 957 * This overrides the default magic get method of %SIG elements.
726 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 958 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
727 * and instead of tryign to save and restore the hash elements, we just provide 959 * and instead of trying to save and restore the hash elements (extremely slow),
728 * readback here. 960 * we just provide our own readback here.
729 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
730 * not expecting this to actually change the hook. This is a potential problem
731 * when a schedule happens then, but we ignore this.
732 */ 961 */
733static int 962static int ecb_cold
734coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 963coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
735{ 964{
736 const char *s = MgPV_nolen_const (mg); 965 const char *s = MgPV_nolen_const (mg);
737 966
738 if (*s == '_') 967 if (*s == '_')
… …
750 } 979 }
751 980
752 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 981 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
753} 982}
754 983
755static int 984static int ecb_cold
756coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 985coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
757{ 986{
758 const char *s = MgPV_nolen_const (mg); 987 const char *s = MgPV_nolen_const (mg);
759 988
760 if (*s == '_') 989 if (*s == '_')
… …
774 } 1003 }
775 1004
776 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1005 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
777} 1006}
778 1007
779static int 1008static int ecb_cold
780coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1009coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
781{ 1010{
782 const char *s = MgPV_nolen_const (mg); 1011 const char *s = MgPV_nolen_const (mg);
783 1012
784 if (*s == '_') 1013 if (*s == '_')
… …
789 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1018 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
790 1019
791 if (svp) 1020 if (svp)
792 { 1021 {
793 SV *old = *svp; 1022 SV *old = *svp;
794 *svp = newSVsv (sv); 1023 *svp = SvOK (sv) ? newSVsv (sv) : 0;
795 SvREFCNT_dec (old); 1024 SvREFCNT_dec (old);
796 return 0; 1025 return 0;
797 } 1026 }
798 } 1027 }
799 1028
… …
811slf_check_nop (pTHX_ struct CoroSLF *frame) 1040slf_check_nop (pTHX_ struct CoroSLF *frame)
812{ 1041{
813 return 0; 1042 return 0;
814} 1043}
815 1044
816static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1045static int
1046slf_check_repeat (pTHX_ struct CoroSLF *frame)
1047{
1048 return 1;
1049}
1050
1051static UNOP init_perl_op;
1052
1053ecb_noinline static void /* noinline to keep it out of the transfer fast path */
817coro_setup (pTHX_ struct coro *coro) 1054init_perl (pTHX_ struct coro *coro)
818{ 1055{
819 /* 1056 /*
820 * emulate part of the perl startup here. 1057 * emulate part of the perl startup here.
821 */ 1058 */
822 coro_init_stacks (aTHX); 1059 coro_init_stacks (aTHX);
823 1060
824 PL_runops = RUNOPS_DEFAULT; 1061 PL_runops = RUNOPS_DEFAULT;
825 PL_curcop = &PL_compiling; 1062 PL_curcop = &PL_compiling;
826 PL_in_eval = EVAL_NULL; 1063 PL_in_eval = EVAL_NULL;
827 PL_comppad = 0; 1064 PL_comppad = 0;
1065 PL_comppad_name = 0;
1066 PL_comppad_name_fill = 0;
1067 PL_comppad_name_floor = 0;
828 PL_curpm = 0; 1068 PL_curpm = 0;
829 PL_curpad = 0; 1069 PL_curpad = 0;
830 PL_localizing = 0; 1070 PL_localizing = 0;
831 PL_dirty = 0;
832 PL_restartop = 0; 1071 PL_restartop = 0;
833#if PERL_VERSION_ATLEAST (5,10,0) 1072#if PERL_VERSION_ATLEAST (5,10,0)
834 PL_parser = 0; 1073 PL_parser = 0;
835#endif 1074#endif
1075 PL_hints = 0;
836 1076
837 /* recreate the die/warn hooks */ 1077 /* recreate the die/warn hooks */
838 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1078 PL_diehook = SvREFCNT_inc (rv_diehook);
839 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1079 PL_warnhook = SvREFCNT_inc (rv_warnhook);
840 1080
841 GvSV (PL_defgv) = newSV (0); 1081 GvSV (PL_defgv) = newSV (0);
842 GvAV (PL_defgv) = coro->args; coro->args = 0; 1082 GvAV (PL_defgv) = coro->args; coro->args = 0;
843 GvSV (PL_errgv) = newSV (0); 1083 GvSV (PL_errgv) = newSV (0);
844 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1084 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1085 GvHV (PL_hintgv) = 0;
845 PL_rs = newSVsv (GvSV (irsgv)); 1086 PL_rs = newSVsv (GvSV (irsgv));
846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1087 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
847 1088
848 { 1089 {
849 dSP; 1090 dSP;
850 UNOP myop; 1091 UNOP myop;
851 1092
852 Zero (&myop, 1, UNOP); 1093 Zero (&myop, 1, UNOP);
853 myop.op_next = Nullop; 1094 myop.op_next = Nullop;
1095 myop.op_type = OP_ENTERSUB;
854 myop.op_flags = OPf_WANT_VOID; 1096 myop.op_flags = OPf_WANT_VOID;
855 1097
856 PUSHMARK (SP); 1098 PUSHMARK (SP);
857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1099 PUSHs ((SV *)coro->startcv);
858 PUTBACK; 1100 PUTBACK;
859 PL_op = (OP *)&myop; 1101 PL_op = (OP *)&myop;
860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1102 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
861 SPAGAIN;
862 } 1103 }
863 1104
864 /* this newly created coroutine might be run on an existing cctx which most 1105 /* this newly created coroutine might be run on an existing cctx which most
865 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1106 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
866 */ 1107 */
867 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1108 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1109 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1110 slf_frame.destroy = 0;
869 1111
870 coro_throw = coro->throw; 1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
871} 1113 init_perl_op.op_next = PL_op;
1114 init_perl_op.op_type = OP_ENTERSUB;
1115 init_perl_op.op_ppaddr = pp_slf;
1116 /* no flags etc. required, as an init function won't be called */
872 1117
1118 PL_op = (OP *)&init_perl_op;
1119
1120 /* copy throw, in case it was set before init_perl */
1121 CORO_THROW = coro->except;
1122
1123 SWAP_SVS (coro);
1124
1125 if (ecb_expect_false (enable_times))
1126 {
1127 coro_times_update ();
1128 coro_times_sub (coro);
1129 }
1130}
1131
873static void 1132static void
874coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
875{ 1134{
876 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
877 { 1136 {
878 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
879 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
887 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
888 1147
889 /* unwind main stack */ 1148 /* unwind main stack */
890 dounwind (-1); 1149 dounwind (-1);
891 } 1150 }
1151}
892 1152
893 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
894 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
895 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
896 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
897 SvREFCNT_dec (PL_rs);
898 SvREFCNT_dec (GvSV (irsgv));
899 1157
900 SvREFCNT_dec (PL_diehook);
901 SvREFCNT_dec (PL_warnhook);
902 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
1173 /* restore swapped sv's */
1174 SWAP_SVS (coro);
1175
1176 coro_destruct_stacks (aTHX);
1177
1178 // now save some sv's to be free'd later
1179 svf [0] = GvSV (PL_defgv);
1180 svf [1] = (SV *)GvAV (PL_defgv);
1181 svf [2] = GvSV (PL_errgv);
1182 svf [3] = (SV *)PL_defoutgv;
1183 svf [4] = PL_rs;
1184 svf [5] = GvSV (irsgv);
1185 svf [6] = (SV *)GvHV (PL_hintgv);
1186 svf [7] = PL_diehook;
1187 svf [8] = PL_warnhook;
1188 assert (9 == sizeof (svf) / sizeof (*svf));
1189
1190 SvRV_set (coro_current, old_current);
1191
1192 load_perl (aTHX_ current);
1193 }
1194
1195 {
1196 unsigned int i;
1197
1198 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1199 SvREFCNT_dec (svf [i]);
1200
903 SvREFCNT_dec (coro->saved_deffh); 1201 SvREFCNT_dec (coro->saved_deffh);
904 SvREFCNT_dec (coro_throw); 1202 SvREFCNT_dec (coro->rouse_cb);
905 1203 SvREFCNT_dec (coro->invoke_cb);
906 coro_destruct_stacks (aTHX); 1204 SvREFCNT_dec (coro->invoke_av);
1205 }
907} 1206}
908 1207
909INLINE void 1208ECB_INLINE void
910free_coro_mortal (pTHX) 1209free_coro_mortal (pTHX)
911{ 1210{
912 if (expect_true (coro_mortal)) 1211 if (ecb_expect_true (coro_mortal))
913 { 1212 {
914 SvREFCNT_dec (coro_mortal); 1213 SvREFCNT_dec ((SV *)coro_mortal);
915 coro_mortal = 0; 1214 coro_mortal = 0;
916 } 1215 }
917} 1216}
918 1217
919static int 1218static int
920runops_trace (pTHX) 1219runops_trace (pTHX)
921{ 1220{
922 COP *oldcop = 0; 1221 COP *oldcop = 0;
923 int oldcxix = -2; 1222 int oldcxix = -2;
924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
925 coro_cctx *cctx = coro->cctx;
926 1223
927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1224 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
928 { 1225 {
929 PERL_ASYNC_CHECK (); 1226 PERL_ASYNC_CHECK ();
930 1227
931 if (cctx->flags & CC_TRACE_ALL) 1228 if (cctx_current->flags & CC_TRACE_ALL)
932 { 1229 {
933 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1230 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
934 { 1231 {
935 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1232 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
936 SV **bot, **top; 1233 SV **bot, **top;
937 AV *av = newAV (); /* return values */ 1234 AV *av = newAV (); /* return values */
938 SV **cb; 1235 SV **cb;
… …
975 1272
976 if (PL_curcop != &PL_compiling) 1273 if (PL_curcop != &PL_compiling)
977 { 1274 {
978 SV **cb; 1275 SV **cb;
979 1276
980 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1277 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
981 { 1278 {
982 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1279 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
983 1280
984 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1281 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
985 { 1282 {
986 runops_proc_t old_runops = PL_runops;
987 dSP; 1283 dSP;
988 GV *gv = CvGV (cx->blk_sub.cv); 1284 GV *gv = CvGV (cx->blk_sub.cv);
989 SV *fullname = sv_2mortal (newSV (0)); 1285 SV *fullname = sv_2mortal (newSV (0));
990 1286
991 if (isGV (gv)) 1287 if (isGV (gv))
… …
996 SAVETMPS; 1292 SAVETMPS;
997 EXTEND (SP, 3); 1293 EXTEND (SP, 3);
998 PUSHMARK (SP); 1294 PUSHMARK (SP);
999 PUSHs (&PL_sv_yes); 1295 PUSHs (&PL_sv_yes);
1000 PUSHs (fullname); 1296 PUSHs (fullname);
1001 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1297 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1002 PUTBACK; 1298 PUTBACK;
1003 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1299 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1004 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1300 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1005 SPAGAIN; 1301 SPAGAIN;
1006 FREETMPS; 1302 FREETMPS;
… …
1009 } 1305 }
1010 1306
1011 oldcxix = cxstack_ix; 1307 oldcxix = cxstack_ix;
1012 } 1308 }
1013 1309
1014 if (cctx->flags & CC_TRACE_LINE) 1310 if (cctx_current->flags & CC_TRACE_LINE)
1015 { 1311 {
1016 dSP; 1312 dSP;
1017 1313
1018 PL_runops = RUNOPS_DEFAULT; 1314 PL_runops = RUNOPS_DEFAULT;
1019 ENTER; 1315 ENTER;
… …
1038 1334
1039 TAINT_NOT; 1335 TAINT_NOT;
1040 return 0; 1336 return 0;
1041} 1337}
1042 1338
1339static struct CoroSLF cctx_ssl_frame;
1340
1043static void 1341static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1342slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1045{ 1343{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0; 1344 ta->prev = 0;
1048} 1345}
1049 1346
1050/* inject a fake call to Coro::State::_cctx_init into the execution */ 1347static int
1051/* _cctx_init should be careful, as it could be called at almost any time */ 1348slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
1054static void NOINLINE
1055cctx_prepare (pTHX_ coro_cctx *cctx)
1056{ 1349{
1057 dSP; 1350 *frame = cctx_ssl_frame;
1058 UNOP myop;
1059 1351
1352 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1353}
1354
1355/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1356static void ecb_noinline
1357cctx_prepare (pTHX)
1358{
1060 PL_top_env = &PL_start_env; 1359 PL_top_env = &PL_start_env;
1061 1360
1062 if (cctx->flags & CC_TRACE) 1361 if (cctx_current->flags & CC_TRACE)
1063 PL_runops = runops_trace; 1362 PL_runops = runops_trace;
1064 1363
1065 Zero (&myop, 1, UNOP); 1364 /* we already must be executing an SLF op, there is no other valid way
1066 myop.op_next = PL_op; 1365 * that can lead to creation of a new cctx */
1067 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1366 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1367 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1068 1368
1069 PUSHMARK (SP); 1369 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1070 EXTEND (SP, 2); 1370 cctx_ssl_frame = slf_frame;
1071 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1371
1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1372 slf_frame.prepare = slf_prepare_set_stacklevel;
1073 PUTBACK; 1373 slf_frame.check = slf_check_set_stacklevel;
1074 PL_op = (OP *)&myop;
1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1076 SPAGAIN;
1077} 1374}
1078 1375
1079/* the tail of transfer: execute stuff we can only do after a transfer */ 1376/* the tail of transfer: execute stuff we can only do after a transfer */
1080INLINE void 1377ECB_INLINE void
1081transfer_tail (pTHX) 1378transfer_tail (pTHX)
1082{ 1379{
1083 free_coro_mortal (aTHX); 1380 free_coro_mortal (aTHX);
1084} 1381}
1085 1382
… …
1100 /* normally we would need to skip the entersub here */ 1397 /* normally we would need to skip the entersub here */
1101 /* not doing so will re-execute it, which is exactly what we want */ 1398 /* not doing so will re-execute it, which is exactly what we want */
1102 /* PL_nop = PL_nop->op_next */ 1399 /* PL_nop = PL_nop->op_next */
1103 1400
1104 /* inject a fake subroutine call to cctx_init */ 1401 /* inject a fake subroutine call to cctx_init */
1105 cctx_prepare (aTHX_ (coro_cctx *)arg); 1402 cctx_prepare (aTHX);
1106 1403
1107 /* cctx_run is the alternative tail of transfer() */ 1404 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX); 1405 transfer_tail (aTHX);
1109 1406
1110 /* somebody or something will hit me for both perl_run and PL_restartop */ 1407 /* somebody or something will hit me for both perl_run and PL_restartop */
1111 PL_restartop = PL_op; 1408 PL_restartop = PL_op;
1112 perl_run (PL_curinterp); 1409 perl_run (PL_curinterp);
1410 /*
1411 * Unfortunately, there is no way to get at the return values of the
1412 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1413 * runtime errors here, as this is just a random interpreter, not a thread.
1414 */
1113 1415
1114 /* 1416 /*
1115 * If perl-run returns we assume exit() was being called or the coro 1417 * If perl-run returns we assume exit() was being called or the coro
1116 * fell off the end, which seems to be the only valid (non-bug) 1418 * fell off the end, which seems to be the only valid (non-bug)
1117 * reason for perl_run to return. We try to exit by jumping to the 1419 * reason for perl_run to return. We try to exit by jumping to the
1118 * bootstrap-time "top" top_env, as we cannot restore the "main" 1420 * bootstrap-time "top" top_env, as we cannot restore the "main"
1119 * coroutine as Coro has no such concept 1421 * coroutine as Coro has no such concept.
1422 * This actually isn't valid with the pthread backend, but OSes requiring
1423 * that backend are too broken to do it in a standards-compliant way.
1120 */ 1424 */
1121 PL_top_env = main_top_env; 1425 PL_top_env = main_top_env;
1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1426 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 } 1427 }
1124} 1428}
… …
1201cctx_destroy (coro_cctx *cctx) 1505cctx_destroy (coro_cctx *cctx)
1202{ 1506{
1203 if (!cctx) 1507 if (!cctx)
1204 return; 1508 return;
1205 1509
1510 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1511
1206 --cctx_count; 1512 --cctx_count;
1207 coro_destroy (&cctx->cctx); 1513 coro_destroy (&cctx->cctx);
1208 1514
1209 /* coro_transfer creates new, empty cctx's */ 1515 /* coro_transfer creates new, empty cctx's */
1210 if (cctx->sptr) 1516 if (cctx->sptr)
… …
1228#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1534#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1229 1535
1230static coro_cctx * 1536static coro_cctx *
1231cctx_get (pTHX) 1537cctx_get (pTHX)
1232{ 1538{
1233 while (expect_true (cctx_first)) 1539 while (ecb_expect_true (cctx_first))
1234 { 1540 {
1235 coro_cctx *cctx = cctx_first; 1541 coro_cctx *cctx = cctx_first;
1236 cctx_first = cctx->next; 1542 cctx_first = cctx->next;
1237 --cctx_idle; 1543 --cctx_idle;
1238 1544
1239 if (expect_true (!CCTX_EXPIRED (cctx))) 1545 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1240 return cctx; 1546 return cctx;
1241 1547
1242 cctx_destroy (cctx); 1548 cctx_destroy (cctx);
1243 } 1549 }
1244 1550
… …
1249cctx_put (coro_cctx *cctx) 1555cctx_put (coro_cctx *cctx)
1250{ 1556{
1251 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1557 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1252 1558
1253 /* free another cctx if overlimit */ 1559 /* free another cctx if overlimit */
1254 if (expect_false (cctx_idle >= cctx_max_idle)) 1560 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1255 { 1561 {
1256 coro_cctx *first = cctx_first; 1562 coro_cctx *first = cctx_first;
1257 cctx_first = first->next; 1563 cctx_first = first->next;
1258 --cctx_idle; 1564 --cctx_idle;
1259 1565
… …
1270static void 1576static void
1271transfer_check (pTHX_ struct coro *prev, struct coro *next) 1577transfer_check (pTHX_ struct coro *prev, struct coro *next)
1272{ 1578{
1273 /* TODO: throwing up here is considered harmful */ 1579 /* TODO: throwing up here is considered harmful */
1274 1580
1275 if (expect_true (prev != next)) 1581 if (ecb_expect_true (prev != next))
1276 { 1582 {
1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1583 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1584 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1279 1585
1280 if (expect_false (next->flags & CF_RUNNING)) 1586 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1282
1283 if (expect_false (next->flags & CF_DESTROYED))
1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1587 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1285 1588
1286#if !PERL_VERSION_ATLEAST (5,10,0) 1589#if !PERL_VERSION_ATLEAST (5,10,0)
1287 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1590 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1591 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1289#endif 1592#endif
1290 } 1593 }
1291} 1594}
1292 1595
1293/* always use the TRANSFER macro */ 1596/* always use the TRANSFER macro */
1294static void NOINLINE /* noinline so we have a fixed stackframe */ 1597static void ecb_noinline /* noinline so we have a fixed stackframe */
1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1598transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1296{ 1599{
1297 dSTACKLEVEL; 1600 dSTACKLEVEL;
1298 1601
1299 /* sometimes transfer is only called to set idle_sp */ 1602 /* sometimes transfer is only called to set idle_sp */
1300 if (expect_false (!next)) 1603 if (ecb_expect_false (!prev))
1301 { 1604 {
1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1605 cctx_current->idle_sp = STACKLEVEL;
1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1606 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1304 } 1607 }
1305 else if (expect_true (prev != next)) 1608 else if (ecb_expect_true (prev != next))
1306 { 1609 {
1307 coro_cctx *prev__cctx; 1610 coro_cctx *cctx_prev;
1308 1611
1309 if (expect_false (prev->flags & CF_NEW)) 1612 if (ecb_expect_false (prev->flags & CF_NEW))
1310 { 1613 {
1311 /* create a new empty/source context */ 1614 /* create a new empty/source context */
1312 prev->cctx = cctx_new_empty ();
1313 prev->flags &= ~CF_NEW; 1615 prev->flags &= ~CF_NEW;
1314 prev->flags |= CF_RUNNING; 1616 prev->flags |= CF_RUNNING;
1315 } 1617 }
1316 1618
1317 prev->flags &= ~CF_RUNNING; 1619 prev->flags &= ~CF_RUNNING;
1318 next->flags |= CF_RUNNING; 1620 next->flags |= CF_RUNNING;
1319 1621
1320 /* first get rid of the old state */ 1622 /* first get rid of the old state */
1321 save_perl (aTHX_ prev); 1623 save_perl (aTHX_ prev);
1322 1624
1323 if (expect_false (next->flags & CF_NEW)) 1625 if (ecb_expect_false (next->flags & CF_NEW))
1324 { 1626 {
1325 /* need to start coroutine */ 1627 /* need to start coroutine */
1326 next->flags &= ~CF_NEW; 1628 next->flags &= ~CF_NEW;
1327 /* setup coroutine call */ 1629 /* setup coroutine call */
1328 coro_setup (aTHX_ next); 1630 init_perl (aTHX_ next);
1329 } 1631 }
1330 else 1632 else
1331 load_perl (aTHX_ next); 1633 load_perl (aTHX_ next);
1332 1634
1333 prev__cctx = prev->cctx;
1334
1335 /* possibly untie and reuse the cctx */ 1635 /* possibly untie and reuse the cctx */
1336 if (expect_true ( 1636 if (ecb_expect_true (
1337 prev__cctx->idle_sp == (void *)stacklevel 1637 cctx_current->idle_sp == STACKLEVEL
1338 && !(prev__cctx->flags & CC_TRACE) 1638 && !(cctx_current->flags & CC_TRACE)
1339 && !force_cctx 1639 && !force_cctx
1340 )) 1640 ))
1341 { 1641 {
1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1642 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1643 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1344 1644
1345 prev->cctx = 0;
1346
1347 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1645 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1348 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1646 /* without this the next cctx_get might destroy the running cctx while still in use */
1349 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1647 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1350 if (!next->cctx) 1648 if (ecb_expect_true (!next->cctx))
1351 next->cctx = cctx_get (aTHX); 1649 next->cctx = cctx_get (aTHX);
1352 1650
1353 cctx_put (prev__cctx); 1651 cctx_put (cctx_current);
1354 } 1652 }
1653 else
1654 prev->cctx = cctx_current;
1355 1655
1356 ++next->usecount; 1656 ++next->usecount;
1357 1657
1358 if (expect_true (!next->cctx)) 1658 cctx_prev = cctx_current;
1359 next->cctx = cctx_get (aTHX); 1659 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1360 1660
1361 if (expect_false (prev__cctx != next->cctx)) 1661 next->cctx = 0;
1662
1663 if (ecb_expect_false (cctx_prev != cctx_current))
1362 { 1664 {
1363 prev__cctx->top_env = PL_top_env; 1665 cctx_prev->top_env = PL_top_env;
1364 PL_top_env = next->cctx->top_env; 1666 PL_top_env = cctx_current->top_env;
1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1667 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1366 } 1668 }
1367 1669
1368 transfer_tail (aTHX); 1670 transfer_tail (aTHX);
1369 } 1671 }
1370} 1672}
… …
1372#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1674#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1675#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1374 1676
1375/** high level stuff ********************************************************/ 1677/** high level stuff ********************************************************/
1376 1678
1679/* this function is actually Coro, not Coro::State, but we call it from here */
1680/* because it is convenient - but it hasn't been declared yet for that reason */
1377static int 1681static void
1682coro_call_on_destroy (pTHX_ struct coro *coro);
1683
1684static void
1378coro_state_destroy (pTHX_ struct coro *coro) 1685coro_state_destroy (pTHX_ struct coro *coro)
1379{ 1686{
1380 if (coro->flags & CF_DESTROYED) 1687 if (coro->flags & CF_ZOMBIE)
1381 return 0; 1688 return;
1382 1689
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro); 1690 slf_destroy (aTHX_ coro);
1385 1691
1386 coro->flags |= CF_DESTROYED; 1692 coro->flags |= CF_ZOMBIE;
1387 1693
1388 if (coro->flags & CF_READY) 1694 if (coro->flags & CF_READY)
1389 { 1695 {
1390 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1696 /* reduce nready, as destroying a ready coro effectively unreadies it */
1391 /* alternative: look through all ready queues and remove the coro */ 1697 /* alternative: look through all ready queues and remove the coro */
1392 --coro_nready; 1698 --coro_nready;
1393 } 1699 }
1394 else 1700 else
1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1701 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1396 1702
1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1398 {
1399 struct coro temp;
1400
1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1402
1403 save_perl (aTHX_ &temp);
1404 load_perl (aTHX_ coro);
1405
1406 coro_destruct (aTHX_ coro);
1407
1408 load_perl (aTHX_ &temp);
1409
1410 coro->slot = 0;
1411 }
1412
1413 cctx_destroy (coro->cctx);
1414 SvREFCNT_dec (coro->args);
1415
1416 if (coro->next) coro->next->prev = coro->prev; 1703 if (coro->next) coro->next->prev = coro->prev;
1417 if (coro->prev) coro->prev->next = coro->next; 1704 if (coro->prev) coro->prev->next = coro->next;
1418 if (coro == coro_first) coro_first = coro->next; 1705 if (coro == coro_first) coro_first = coro->next;
1419 1706
1420 return 1; 1707 if (coro->mainstack
1708 && coro->mainstack != main_mainstack
1709 && coro->slot
1710 && !PL_dirty)
1711 destroy_perl (aTHX_ coro);
1712
1713 cctx_destroy (coro->cctx);
1714 SvREFCNT_dec (coro->startcv);
1715 SvREFCNT_dec (coro->args);
1716 SvREFCNT_dec (coro->swap_sv);
1717 SvREFCNT_dec (CORO_THROW);
1718
1719 coro_call_on_destroy (aTHX_ coro);
1720
1721 /* more destruction mayhem in coro_state_free */
1421} 1722}
1422 1723
1423static int 1724static int
1424coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1725coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1425{ 1726{
1426 struct coro *coro = (struct coro *)mg->mg_ptr; 1727 struct coro *coro = (struct coro *)mg->mg_ptr;
1427 mg->mg_ptr = 0; 1728 mg->mg_ptr = 0;
1428 1729
1429 coro->hv = 0;
1430
1431 if (--coro->refcnt < 0)
1432 {
1433 coro_state_destroy (aTHX_ coro); 1730 coro_state_destroy (aTHX_ coro);
1731 SvREFCNT_dec (coro->on_destroy);
1732 SvREFCNT_dec (coro->status);
1733
1434 Safefree (coro); 1734 Safefree (coro);
1435 }
1436 1735
1437 return 0; 1736 return 0;
1438} 1737}
1439 1738
1440static int 1739static int ecb_cold
1441coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1740coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1442{ 1741{
1443 struct coro *coro = (struct coro *)mg->mg_ptr; 1742 /* called when perl clones the current process the slow way (windows process emulation) */
1444 1743 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1445 ++coro->refcnt; 1744 mg->mg_ptr = 0;
1745 mg->mg_virtual = 0;
1446 1746
1447 return 0; 1747 return 0;
1448} 1748}
1449 1749
1450static MGVTBL coro_state_vtbl = { 1750static MGVTBL coro_state_vtbl = {
… …
1475 TRANSFER (ta, 1); 1775 TRANSFER (ta, 1);
1476} 1776}
1477 1777
1478/** Coro ********************************************************************/ 1778/** Coro ********************************************************************/
1479 1779
1480INLINE void 1780ECB_INLINE void
1481coro_enq (pTHX_ struct coro *coro) 1781coro_enq (pTHX_ struct coro *coro)
1482{ 1782{
1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1783 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1484}
1485 1784
1486INLINE SV * 1785 SvREFCNT_inc_NN (coro->hv);
1786
1787 coro->next_ready = 0;
1788 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1789 ready [1] = coro;
1790}
1791
1792ECB_INLINE struct coro *
1487coro_deq (pTHX) 1793coro_deq (pTHX)
1488{ 1794{
1489 int prio; 1795 int prio;
1490 1796
1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1797 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1492 if (AvFILLp (coro_ready [prio]) >= 0) 1798 {
1493 return av_shift (coro_ready [prio]); 1799 struct coro **ready = coro_ready [prio];
1800
1801 if (ready [0])
1802 {
1803 struct coro *coro = ready [0];
1804 ready [0] = coro->next_ready;
1805 return coro;
1806 }
1807 }
1494 1808
1495 return 0; 1809 return 0;
1810}
1811
1812static void
1813invoke_sv_ready_hook_helper (void)
1814{
1815 dTHX;
1816 dSP;
1817
1818 ENTER;
1819 SAVETMPS;
1820
1821 PUSHMARK (SP);
1822 PUTBACK;
1823 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1824
1825 FREETMPS;
1826 LEAVE;
1496} 1827}
1497 1828
1498static int 1829static int
1499api_ready (pTHX_ SV *coro_sv) 1830api_ready (pTHX_ SV *coro_sv)
1500{ 1831{
1501 struct coro *coro;
1502 SV *sv_hook;
1503 void (*xs_hook)(void);
1504
1505 if (SvROK (coro_sv))
1506 coro_sv = SvRV (coro_sv);
1507
1508 coro = SvSTATE (coro_sv); 1832 struct coro *coro = SvSTATE (coro_sv);
1509 1833
1510 if (coro->flags & CF_READY) 1834 if (coro->flags & CF_READY)
1511 return 0; 1835 return 0;
1512 1836
1513 coro->flags |= CF_READY; 1837 coro->flags |= CF_READY;
1514 1838
1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1517
1518 coro_enq (aTHX_ coro); 1839 coro_enq (aTHX_ coro);
1519 ++coro_nready;
1520 1840
1521 if (sv_hook) 1841 if (!coro_nready++)
1522 { 1842 if (coroapi.readyhook)
1523 dSP; 1843 coroapi.readyhook ();
1524
1525 ENTER;
1526 SAVETMPS;
1527
1528 PUSHMARK (SP);
1529 PUTBACK;
1530 call_sv (sv_hook, G_DISCARD);
1531 SPAGAIN;
1532
1533 FREETMPS;
1534 LEAVE;
1535 }
1536
1537 if (xs_hook)
1538 xs_hook ();
1539 1844
1540 return 1; 1845 return 1;
1541} 1846}
1542 1847
1543static int 1848static int
1544api_is_ready (pTHX_ SV *coro_sv) 1849api_is_ready (pTHX_ SV *coro_sv)
1545{ 1850{
1546 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1851 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1547} 1852}
1548 1853
1854/* expects to own a reference to next->hv */
1549INLINE void 1855ECB_INLINE void
1550prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1856prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1551{ 1857{
1552 SV *prev_sv, *next_sv;
1553
1554 for (;;)
1555 {
1556 next_sv = coro_deq (aTHX);
1557
1558 /* nothing to schedule: call the idle handler */
1559 if (expect_false (!next_sv))
1560 {
1561 dSP;
1562
1563 ENTER;
1564 SAVETMPS;
1565
1566 PUSHMARK (SP);
1567 PUTBACK;
1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1570
1571 FREETMPS;
1572 LEAVE;
1573 continue;
1574 }
1575
1576 ta->next = SvSTATE_hv (next_sv);
1577
1578 /* cannot transfer to destroyed coros, skip and look for next */
1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1580 {
1581 SvREFCNT_dec (next_sv);
1582 /* coro_nready has already been taken care of by destroy */
1583 continue;
1584 }
1585
1586 --coro_nready;
1587 break;
1588 }
1589
1590 /* free this only after the transfer */
1591 prev_sv = SvRV (coro_current); 1858 SV *prev_sv = SvRV (coro_current);
1859
1592 ta->prev = SvSTATE_hv (prev_sv); 1860 ta->prev = SvSTATE_hv (prev_sv);
1861 ta->next = next;
1862
1593 TRANSFER_CHECK (*ta); 1863 TRANSFER_CHECK (*ta);
1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1864
1595 ta->next->flags &= ~CF_READY;
1596 SvRV_set (coro_current, next_sv); 1865 SvRV_set (coro_current, (SV *)next->hv);
1597 1866
1598 free_coro_mortal (aTHX); 1867 free_coro_mortal (aTHX);
1599 coro_mortal = prev_sv; 1868 coro_mortal = prev_sv;
1600} 1869}
1601 1870
1871static void
1872prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1873{
1874 for (;;)
1875 {
1876 struct coro *next = coro_deq (aTHX);
1877
1878 if (ecb_expect_true (next))
1879 {
1880 /* cannot transfer to destroyed coros, skip and look for next */
1881 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1882 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1883 else
1884 {
1885 next->flags &= ~CF_READY;
1886 --coro_nready;
1887
1888 prepare_schedule_to (aTHX_ ta, next);
1889 break;
1890 }
1891 }
1892 else
1893 {
1894 /* nothing to schedule: call the idle handler */
1895 if (SvROK (sv_idle)
1896 && SvOBJECT (SvRV (sv_idle)))
1897 {
1898 if (SvRV (sv_idle) == SvRV (coro_current))
1899 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1900
1901 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1902 api_ready (aTHX_ SvRV (sv_idle));
1903 --coro_nready;
1904 }
1905 else
1906 {
1907 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1908 dSP;
1909
1910 ENTER;
1911 SAVETMPS;
1912
1913 PUSHMARK (SP);
1914 PUTBACK;
1915 call_sv (sv_idle, G_VOID | G_DISCARD);
1916
1917 FREETMPS;
1918 LEAVE;
1919 }
1920 }
1921 }
1922}
1923
1602INLINE void 1924ECB_INLINE void
1603prepare_cede (pTHX_ struct coro_transfer_args *ta) 1925prepare_cede (pTHX_ struct coro_transfer_args *ta)
1604{ 1926{
1605 api_ready (aTHX_ coro_current); 1927 api_ready (aTHX_ coro_current);
1606 prepare_schedule (aTHX_ ta); 1928 prepare_schedule (aTHX_ ta);
1607} 1929}
1608 1930
1609INLINE void 1931ECB_INLINE void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1932prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{ 1933{
1612 SV *prev = SvRV (coro_current); 1934 SV *prev = SvRV (coro_current);
1613 1935
1614 if (coro_nready) 1936 if (coro_nready)
… …
1627 1949
1628 prepare_schedule (aTHX_ &ta); 1950 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1); 1951 TRANSFER (ta, 1);
1630} 1952}
1631 1953
1954static void
1955api_schedule_to (pTHX_ SV *coro_sv)
1956{
1957 struct coro_transfer_args ta;
1958 struct coro *next = SvSTATE (coro_sv);
1959
1960 SvREFCNT_inc_NN (coro_sv);
1961 prepare_schedule_to (aTHX_ &ta, next);
1962}
1963
1632static int 1964static int
1633api_cede (pTHX) 1965api_cede (pTHX)
1634{ 1966{
1635 struct coro_transfer_args ta; 1967 struct coro_transfer_args ta;
1636 1968
1637 prepare_cede (aTHX_ &ta); 1969 prepare_cede (aTHX_ &ta);
1638 1970
1639 if (expect_true (ta.prev != ta.next)) 1971 if (ecb_expect_true (ta.prev != ta.next))
1640 { 1972 {
1641 TRANSFER (ta, 1); 1973 TRANSFER (ta, 1);
1642 return 1; 1974 return 1;
1643 } 1975 }
1644 else 1976 else
… …
1663static void 1995static void
1664api_trace (pTHX_ SV *coro_sv, int flags) 1996api_trace (pTHX_ SV *coro_sv, int flags)
1665{ 1997{
1666 struct coro *coro = SvSTATE (coro_sv); 1998 struct coro *coro = SvSTATE (coro_sv);
1667 1999
2000 if (coro->flags & CF_RUNNING)
2001 croak ("cannot enable tracing on a running coroutine, caught");
2002
1668 if (flags & CC_TRACE) 2003 if (flags & CC_TRACE)
1669 { 2004 {
1670 if (!coro->cctx) 2005 if (!coro->cctx)
1671 coro->cctx = cctx_new_run (); 2006 coro->cctx = cctx_new_run ();
1672 else if (!(coro->cctx->flags & CC_TRACE)) 2007 else if (!(coro->cctx->flags & CC_TRACE))
1673 croak ("cannot enable tracing on coroutine with custom stack,"); 2008 croak ("cannot enable tracing on coroutine with custom stack, caught");
1674 2009
1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2010 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1676 } 2011 }
1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2012 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1678 { 2013 {
… …
1681 if (coro->flags & CF_RUNNING) 2016 if (coro->flags & CF_RUNNING)
1682 PL_runops = RUNOPS_DEFAULT; 2017 PL_runops = RUNOPS_DEFAULT;
1683 else 2018 else
1684 coro->slot->runops = RUNOPS_DEFAULT; 2019 coro->slot->runops = RUNOPS_DEFAULT;
1685 } 2020 }
2021}
2022
2023static void
2024coro_push_av (pTHX_ AV *av, I32 gimme_v)
2025{
2026 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2027 {
2028 dSP;
2029
2030 if (gimme_v == G_SCALAR)
2031 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2032 else
2033 {
2034 int i;
2035 EXTEND (SP, AvFILLp (av) + 1);
2036
2037 for (i = 0; i <= AvFILLp (av); ++i)
2038 PUSHs (AvARRAY (av)[i]);
2039 }
2040
2041 PUTBACK;
2042 }
2043}
2044
2045static void
2046coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2047{
2048 if (!coro->on_destroy)
2049 coro->on_destroy = newAV ();
2050
2051 av_push (coro->on_destroy, cb);
2052}
2053
2054static void
2055slf_destroy_join (pTHX_ struct CoroSLF *frame)
2056{
2057 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2058}
2059
2060static int
2061slf_check_join (pTHX_ struct CoroSLF *frame)
2062{
2063 struct coro *coro = (struct coro *)frame->data;
2064
2065 if (!coro->status)
2066 return 1;
2067
2068 frame->destroy = 0;
2069
2070 coro_push_av (aTHX_ coro->status, GIMME_V);
2071
2072 SvREFCNT_dec ((SV *)coro->hv);
2073
2074 return 0;
2075}
2076
2077static void
2078slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2079{
2080 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2081
2082 if (items > 1)
2083 croak ("join called with too many arguments");
2084
2085 if (coro->status)
2086 frame->prepare = prepare_nop;
2087 else
2088 {
2089 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2090 frame->prepare = prepare_schedule;
2091 }
2092
2093 frame->check = slf_check_join;
2094 frame->destroy = slf_destroy_join;
2095 frame->data = (void *)coro;
2096 SvREFCNT_inc (coro->hv);
2097}
2098
2099static void
2100coro_call_on_destroy (pTHX_ struct coro *coro)
2101{
2102 AV *od = coro->on_destroy;
2103
2104 if (!od)
2105 return;
2106
2107 while (AvFILLp (od) >= 0)
2108 {
2109 SV *cb = sv_2mortal (av_pop (od));
2110
2111 /* coro hv's (and only hv's at the moment) are supported as well */
2112 if (SvSTATEhv_p (aTHX_ cb))
2113 api_ready (aTHX_ cb);
2114 else
2115 {
2116 dSP; /* don't disturb outer sp */
2117 PUSHMARK (SP);
2118
2119 if (coro->status)
2120 {
2121 PUTBACK;
2122 coro_push_av (aTHX_ coro->status, G_ARRAY);
2123 SPAGAIN;
2124 }
2125
2126 PUTBACK;
2127 call_sv (cb, G_VOID | G_DISCARD);
2128 }
2129 }
2130}
2131
2132static void
2133coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2134{
2135 AV *av;
2136
2137 if (coro->status)
2138 {
2139 av = coro->status;
2140 av_clear (av);
2141 }
2142 else
2143 av = coro->status = newAV ();
2144
2145 /* items are actually not so common, so optimise for this case */
2146 if (items)
2147 {
2148 int i;
2149
2150 av_extend (av, items - 1);
2151
2152 for (i = 0; i < items; ++i)
2153 av_push (av, SvREFCNT_inc_NN (arg [i]));
2154 }
2155}
2156
2157static void
2158slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2159{
2160 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2161 api_ready (aTHX_ sv_manager);
2162
2163 frame->prepare = prepare_schedule;
2164 frame->check = slf_check_repeat;
2165
2166 /* as a minor optimisation, we could unwind all stacks here */
2167 /* but that puts extra pressure on pp_slf, and is not worth much */
2168 /*coro_unwind_stacks (aTHX);*/
2169}
2170
2171static void
2172slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2173{
2174 HV *coro_hv = (HV *)SvRV (coro_current);
2175
2176 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2177 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2178}
2179
2180static void
2181slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2182{
2183 HV *coro_hv;
2184 struct coro *coro;
2185
2186 if (items <= 0)
2187 croak ("Coro::cancel called without coro object,");
2188
2189 coro = SvSTATE (arg [0]);
2190 coro_hv = coro->hv;
2191
2192 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2193
2194 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2195 {
2196 /* coro currently busy cancelling something, so just notify it */
2197 coro->slf_frame.data = (void *)coro;
2198
2199 frame->prepare = prepare_nop;
2200 frame->check = slf_check_nop;
2201 }
2202 else if (coro_hv == (HV *)SvRV (coro_current))
2203 {
2204 /* cancelling the current coro is allowed, and equals terminate */
2205 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2206 }
2207 else
2208 {
2209 struct coro *self = SvSTATE_current;
2210
2211 /* otherwise we cancel directly, purely for speed reasons
2212 * unfortunately, this requires some magic trickery, as
2213 * somebody else could cancel us, so we have to fight the cancellation.
2214 * this is ugly, and hopefully fully worth the extra speed.
2215 * besides, I can't get the slow-but-safe version working...
2216 */
2217 slf_frame.data = 0;
2218 self->flags |= CF_NOCANCEL;
2219 coro_state_destroy (aTHX_ coro);
2220 self->flags &= ~CF_NOCANCEL;
2221
2222 if (slf_frame.data)
2223 {
2224 /* while we were busy we have been cancelled, so terminate */
2225 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2226 }
2227 else
2228 {
2229 frame->prepare = prepare_nop;
2230 frame->check = slf_check_nop;
2231 }
2232 }
2233}
2234
2235static int
2236slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2237{
2238 frame->prepare = 0;
2239 coro_unwind_stacks (aTHX);
2240
2241 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2242
2243 return 1;
2244}
2245
2246static int
2247safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2248{
2249 if (coro->cctx)
2250 croak ("coro inside C callback, unable to cancel at this time, caught");
2251
2252 if (coro->flags & CF_NEW)
2253 {
2254 coro_set_status (aTHX_ coro, arg, items);
2255 coro_state_destroy (aTHX_ coro);
2256 }
2257 else
2258 {
2259 if (!coro->slf_frame.prepare)
2260 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2261
2262 slf_destroy (aTHX_ coro);
2263
2264 coro_set_status (aTHX_ coro, arg, items);
2265 coro->slf_frame.prepare = prepare_nop;
2266 coro->slf_frame.check = slf_check_safe_cancel;
2267
2268 api_ready (aTHX_ (SV *)coro->hv);
2269 }
2270
2271 return 1;
2272}
2273
2274/*****************************************************************************/
2275/* async pool handler */
2276
2277static int
2278slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2279{
2280 HV *hv = (HV *)SvRV (coro_current);
2281 struct coro *coro = (struct coro *)frame->data;
2282
2283 if (!coro->invoke_cb)
2284 return 1; /* loop till we have invoke */
2285 else
2286 {
2287 hv_store (hv, "desc", sizeof ("desc") - 1,
2288 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2289
2290 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2291
2292 {
2293 dSP;
2294 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2295 PUTBACK;
2296 }
2297
2298 SvREFCNT_dec (GvAV (PL_defgv));
2299 GvAV (PL_defgv) = coro->invoke_av;
2300 coro->invoke_av = 0;
2301
2302 return 0;
2303 }
2304}
2305
2306static void
2307slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2308{
2309 HV *hv = (HV *)SvRV (coro_current);
2310 struct coro *coro = SvSTATE_hv ((SV *)hv);
2311
2312 if (ecb_expect_true (coro->saved_deffh))
2313 {
2314 /* subsequent iteration */
2315 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2316 coro->saved_deffh = 0;
2317
2318 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2319 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2320 {
2321 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2322 return;
2323 }
2324 else
2325 {
2326 av_clear (GvAV (PL_defgv));
2327 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2328
2329 coro->prio = 0;
2330
2331 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2332 api_trace (aTHX_ coro_current, 0);
2333
2334 frame->prepare = prepare_schedule;
2335 av_push (av_async_pool, SvREFCNT_inc (hv));
2336 }
2337 }
2338 else
2339 {
2340 /* first iteration, simply fall through */
2341 frame->prepare = prepare_nop;
2342 }
2343
2344 frame->check = slf_check_pool_handler;
2345 frame->data = (void *)coro;
2346}
2347
2348/*****************************************************************************/
2349/* rouse callback */
2350
2351#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2352
2353static void
2354coro_rouse_callback (pTHX_ CV *cv)
2355{
2356 dXSARGS;
2357 SV *data = (SV *)S_GENSUB_ARG;
2358
2359 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2360 {
2361 /* first call, set args */
2362 SV *coro = SvRV (data);
2363 AV *av = newAV ();
2364
2365 SvRV_set (data, (SV *)av);
2366
2367 /* better take a full copy of the arguments */
2368 while (items--)
2369 av_store (av, items, newSVsv (ST (items)));
2370
2371 api_ready (aTHX_ coro);
2372 SvREFCNT_dec (coro);
2373 }
2374
2375 XSRETURN_EMPTY;
2376}
2377
2378static int
2379slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2380{
2381 SV *data = (SV *)frame->data;
2382
2383 if (CORO_THROW)
2384 return 0;
2385
2386 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2387 return 1;
2388
2389 /* now push all results on the stack */
2390 {
2391 dSP;
2392 AV *av = (AV *)SvRV (data);
2393 int i;
2394
2395 EXTEND (SP, AvFILLp (av) + 1);
2396 for (i = 0; i <= AvFILLp (av); ++i)
2397 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2398
2399 /* we have stolen the elements, so set length to zero and free */
2400 AvFILLp (av) = -1;
2401 av_undef (av);
2402
2403 PUTBACK;
2404 }
2405
2406 return 0;
2407}
2408
2409static void
2410slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2411{
2412 SV *cb;
2413
2414 if (items)
2415 cb = arg [0];
2416 else
2417 {
2418 struct coro *coro = SvSTATE_current;
2419
2420 if (!coro->rouse_cb)
2421 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2422
2423 cb = sv_2mortal (coro->rouse_cb);
2424 coro->rouse_cb = 0;
2425 }
2426
2427 if (!SvROK (cb)
2428 || SvTYPE (SvRV (cb)) != SVt_PVCV
2429 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2430 croak ("Coro::rouse_wait called with illegal callback argument,");
2431
2432 {
2433 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2434 SV *data = (SV *)S_GENSUB_ARG;
2435
2436 frame->data = (void *)data;
2437 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2438 frame->check = slf_check_rouse_wait;
2439 }
2440}
2441
2442static SV *
2443coro_new_rouse_cb (pTHX)
2444{
2445 HV *hv = (HV *)SvRV (coro_current);
2446 struct coro *coro = SvSTATE_hv (hv);
2447 SV *data = newRV_inc ((SV *)hv);
2448 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2449
2450 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2451 SvREFCNT_dec (data); /* magicext increases the refcount */
2452
2453 SvREFCNT_dec (coro->rouse_cb);
2454 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2455
2456 return cb;
1686} 2457}
1687 2458
1688/*****************************************************************************/ 2459/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */ 2460/* schedule-like-function opcode (SLF) */
1690 2461
… …
1714 2485
1715 RETURNOP (slf_restore.op_first); 2486 RETURNOP (slf_restore.op_first);
1716} 2487}
1717 2488
1718static void 2489static void
1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1720{
1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1722}
1723
1724static void
1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1726{
1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2490slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{ 2491{
1737 SV **arg = (SV **)slf_frame.data; 2492 SV **arg = (SV **)slf_frame.data;
1738 2493
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2494 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1756 frame->prepare = prepare_schedule; 2511 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop; 2512 frame->check = slf_check_nop;
1758} 2513}
1759 2514
1760static void 2515static void
2516slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2517{
2518 struct coro *next = (struct coro *)slf_frame.data;
2519
2520 SvREFCNT_inc_NN (next->hv);
2521 prepare_schedule_to (aTHX_ ta, next);
2522}
2523
2524static void
2525slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2526{
2527 if (!items)
2528 croak ("Coro::schedule_to expects a coroutine argument, caught");
2529
2530 frame->data = (void *)SvSTATE (arg [0]);
2531 frame->prepare = slf_prepare_schedule_to;
2532 frame->check = slf_check_nop;
2533}
2534
2535static void
2536slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2537{
2538 api_ready (aTHX_ SvRV (coro_current));
2539
2540 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2541}
2542
2543static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2544slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{ 2545{
1763 frame->prepare = prepare_cede; 2546 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop; 2547 frame->check = slf_check_nop;
1765} 2548}
… …
1769{ 2552{
1770 frame->prepare = prepare_cede_notself; 2553 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop; 2554 frame->check = slf_check_nop;
1772} 2555}
1773 2556
1774/* we hijack an hopefully unused CV flag for our purposes */ 2557/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1775#define CVf_SLF 0x4000 2558static void
2559slf_destroy (pTHX_ struct coro *coro)
2560{
2561 /* this callback is reserved for slf functions needing to do cleanup */
2562 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2563 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2564
2565 /*
2566 * The on_destroy above most likely is from an SLF call.
2567 * Since by definition the SLF call will not finish when we destroy
2568 * the coro, we will have to force-finish it here, otherwise
2569 * cleanup functions cannot call SLF functions.
2570 */
2571 coro->slf_frame.prepare = 0;
2572}
1776 2573
1777/* 2574/*
1778 * these not obviously related functions are all rolled into one 2575 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same 2576 * function to increase chances that they all will call transfer with the same
1780 * stack offset 2577 * stack offset
… …
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2583 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787 2584
1788 /* set up the slf frame, unless it has already been set-up */ 2585 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */ 2586 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */ 2587 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare)) 2588 if (ecb_expect_true (!slf_frame.prepare))
1792 { 2589 {
1793 /* first iteration */ 2590 /* first iteration */
1794 dSP; 2591 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1; 2592 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */ 2593 int items = SP - arg; /* args without function object */
… …
1836 } 2633 }
1837 while (slf_frame.check (aTHX_ &slf_frame)); 2634 while (slf_frame.check (aTHX_ &slf_frame));
1838 2635
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2636 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840 2637
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */ 2638 /* exception handling */
1860 if (expect_false (coro_throw)) 2639 if (ecb_expect_false (CORO_THROW))
1861 { 2640 {
1862 SV *exception = sv_2mortal (coro_throw); 2641 SV *exception = sv_2mortal (CORO_THROW);
1863 2642
1864 coro_throw = 0; 2643 CORO_THROW = 0;
1865 sv_setsv (ERRSV, exception); 2644 sv_setsv (ERRSV, exception);
1866 croak (0); 2645 croak (0);
2646 }
2647
2648 /* return value handling - mostly like entersub */
2649 /* make sure we put something on the stack in scalar context */
2650 if (GIMME_V == G_SCALAR
2651 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2652 {
2653 dSP;
2654 SV **bot = PL_stack_base + checkmark;
2655
2656 if (sp == bot) /* too few, push undef */
2657 bot [1] = &PL_sv_undef;
2658 else /* too many, take last one */
2659 bot [1] = *sp;
2660
2661 SP = bot + 1;
2662
2663 PUTBACK;
1867 } 2664 }
1868 2665
1869 return NORMAL; 2666 return NORMAL;
1870} 2667}
1871 2668
… …
1899 if (PL_op->op_flags & OPf_STACKED) 2696 if (PL_op->op_flags & OPf_STACKED)
1900 { 2697 {
1901 if (items > slf_arga) 2698 if (items > slf_arga)
1902 { 2699 {
1903 slf_arga = items; 2700 slf_arga = items;
1904 free (slf_argv); 2701 Safefree (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *)); 2702 New (0, slf_argv, slf_arga, SV *);
1906 } 2703 }
1907 2704
1908 slf_argc = items; 2705 slf_argc = items;
1909 2706
1910 for (i = 0; i < items; ++i) 2707 for (i = 0; i < items; ++i)
… …
1912 } 2709 }
1913 else 2710 else
1914 slf_argc = 0; 2711 slf_argc = 0;
1915 2712
1916 PL_op->op_ppaddr = pp_slf; 2713 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2714 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1918 2715
1919 PL_op = (OP *)&slf_restore; 2716 PL_op = (OP *)&slf_restore;
2717}
2718
2719/*****************************************************************************/
2720/* dynamic wind */
2721
2722static void
2723on_enterleave_call (pTHX_ SV *cb)
2724{
2725 dSP;
2726
2727 PUSHSTACK;
2728
2729 PUSHMARK (SP);
2730 PUTBACK;
2731 call_sv (cb, G_VOID | G_DISCARD);
2732 SPAGAIN;
2733
2734 POPSTACK;
2735}
2736
2737static SV *
2738coro_avp_pop_and_free (pTHX_ AV **avp)
2739{
2740 AV *av = *avp;
2741 SV *res = av_pop (av);
2742
2743 if (AvFILLp (av) < 0)
2744 {
2745 *avp = 0;
2746 SvREFCNT_dec (av);
2747 }
2748
2749 return res;
2750}
2751
2752static void
2753coro_pop_on_enter (pTHX_ void *coro)
2754{
2755 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2756 SvREFCNT_dec (cb);
2757}
2758
2759static void
2760coro_pop_on_leave (pTHX_ void *coro)
2761{
2762 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2763 on_enterleave_call (aTHX_ sv_2mortal (cb));
1920} 2764}
1921 2765
1922/*****************************************************************************/ 2766/*****************************************************************************/
1923/* PerlIO::cede */ 2767/* PerlIO::cede */
1924 2768
… …
1926{ 2770{
1927 PerlIOBuf base; 2771 PerlIOBuf base;
1928 NV next, every; 2772 NV next, every;
1929} PerlIOCede; 2773} PerlIOCede;
1930 2774
1931static IV 2775static IV ecb_cold
1932PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2776PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1933{ 2777{
1934 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2778 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1935 2779
1936 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2780 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1937 self->next = nvtime () + self->every; 2781 self->next = nvtime () + self->every;
1938 2782
1939 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2783 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1940} 2784}
1941 2785
1942static SV * 2786static SV * ecb_cold
1943PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2787PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1944{ 2788{
1945 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2789 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1946 2790
1947 return newSVnv (self->every); 2791 return newSVnv (self->every);
… …
1993 PerlIOBuf_get_cnt, 2837 PerlIOBuf_get_cnt,
1994 PerlIOBuf_set_ptrcnt, 2838 PerlIOBuf_set_ptrcnt,
1995}; 2839};
1996 2840
1997/*****************************************************************************/ 2841/*****************************************************************************/
2842/* Coro::Semaphore & Coro::Signal */
2843
2844static SV *
2845coro_waitarray_new (pTHX_ int count)
2846{
2847 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2848 AV *av = newAV ();
2849 SV **ary;
2850
2851 /* unfortunately, building manually saves memory */
2852 Newx (ary, 2, SV *);
2853 AvALLOC (av) = ary;
2854#if PERL_VERSION_ATLEAST (5,10,0)
2855 AvARRAY (av) = ary;
2856#else
2857 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2858 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2859 SvPVX ((SV *)av) = (char *)ary;
2860#endif
2861 AvMAX (av) = 1;
2862 AvFILLp (av) = 0;
2863 ary [0] = newSViv (count);
2864
2865 return newRV_noinc ((SV *)av);
2866}
2867
1998/* Coro::Semaphore */ 2868/* semaphore */
1999 2869
2000static void 2870static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2871coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{ 2872{
2003 SV *count_sv = AvARRAY (av)[0]; 2873 SV *count_sv = AvARRAY (av)[0];
… …
2015 AvARRAY (av)[0] = AvARRAY (av)[1]; 2885 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv; 2886 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av); 2887 cb = av_shift (av);
2018 2888
2019 if (SvOBJECT (cb)) 2889 if (SvOBJECT (cb))
2890 {
2020 api_ready (aTHX_ cb); 2891 api_ready (aTHX_ cb);
2021 else 2892 --count;
2022 croak ("callbacks not yet supported"); 2893 }
2894 else if (SvTYPE (cb) == SVt_PVCV)
2895 {
2896 dSP;
2897 PUSHMARK (SP);
2898 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2899 PUTBACK;
2900 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2901 }
2023 2902
2024 SvREFCNT_dec (cb); 2903 SvREFCNT_dec (cb);
2025
2026 --count;
2027 } 2904 }
2028} 2905}
2029 2906
2030static void 2907static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2908coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2032{ 2909{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2910 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2911 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2035} 2912}
2036 2913
2037static int 2914static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2915slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2039{ 2916{
2040 AV *av = (AV *)frame->data; 2917 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0]; 2918 SV *count_sv = AvARRAY (av)[0];
2919 SV *coro_hv = SvRV (coro_current);
2042 2920
2921 /* if we are about to throw, don't actually acquire the lock, just throw */
2922 if (CORO_THROW)
2923 return 0;
2043 if (SvIVX (count_sv) > 0) 2924 else if (SvIVX (count_sv) > 0)
2044 { 2925 {
2045 SvSTATE_current->on_destroy = 0; 2926 frame->destroy = 0;
2927
2928 if (acquire)
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2929 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2930 else
2931 coro_semaphore_adjust (aTHX_ av, 0);
2932
2047 return 0; 2933 return 0;
2048 } 2934 }
2049 else 2935 else
2050 { 2936 {
2051 int i; 2937 int i;
2052 /* if we were woken up but can't down, we look through the whole */ 2938 /* if we were woken up but can't down, we look through the whole */
2053 /* waiters list and only add us if we aren't in there already */ 2939 /* waiters list and only add us if we aren't in there already */
2054 /* this avoids some degenerate memory usage cases */ 2940 /* this avoids some degenerate memory usage cases */
2055 2941 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current)) 2942 if (AvARRAY (av)[i] == coro_hv)
2058 return 1; 2943 return 1;
2059 2944
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2945 av_push (av, SvREFCNT_inc (coro_hv));
2061 return 1; 2946 return 1;
2062 } 2947 }
2063} 2948}
2064 2949
2065static void 2950static int
2951slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2952{
2953 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2954}
2955
2956static int
2957slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2958{
2959 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2960}
2961
2962static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2963slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{ 2964{
2068 AV *av = (AV *)SvRV (arg [0]); 2965 AV *av = (AV *)SvRV (arg [0]);
2069 2966
2070 if (SvIVX (AvARRAY (av)[0]) > 0) 2967 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 { 2968 {
2072 frame->data = (void *)av; 2969 frame->data = (void *)av;
2073 frame->prepare = prepare_nop; 2970 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 } 2971 }
2076 else 2972 else
2077 { 2973 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2974 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079 2975
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2976 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule; 2977 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */ 2978 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2979 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2980 frame->destroy = coro_semaphore_destroy;
2087 } 2981 }
2982}
2088 2983
2984static void
2985slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2986{
2987 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2089 frame->check = slf_check_semaphore_down; 2988 frame->check = slf_check_semaphore_down;
2090
2091} 2989}
2092 2990
2093/*****************************************************************************/ 2991static void
2094/* gensub: simple closure generation utility */ 2992slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{ 2993{
2104 CV *cv = (CV *)newSV (0); 2994 if (items >= 2)
2995 {
2996 /* callback form */
2997 AV *av = (AV *)SvRV (arg [0]);
2998 SV *cb_cv = s_get_cv_croak (arg [1]);
2105 2999
2106 sv_upgrade ((SV *)cv, SVt_PVCV); 3000 av_push (av, SvREFCNT_inc_NN (cb_cv));
2107 3001
2108 CvANON_on (cv); 3002 if (SvIVX (AvARRAY (av)[0]) > 0)
2109 CvISXSUB_on (cv); 3003 coro_semaphore_adjust (aTHX_ av, 0);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112 3004
2113 return newRV_noinc ((SV *)cv); 3005 frame->prepare = prepare_nop;
3006 frame->check = slf_check_nop;
3007 }
3008 else
3009 {
3010 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3011 frame->check = slf_check_semaphore_wait;
3012 }
3013}
3014
3015/* signal */
3016
3017static void
3018coro_signal_wake (pTHX_ AV *av, int count)
3019{
3020 SvIVX (AvARRAY (av)[0]) = 0;
3021
3022 /* now signal count waiters */
3023 while (count > 0 && AvFILLp (av) > 0)
3024 {
3025 SV *cb;
3026
3027 /* swap first two elements so we can shift a waiter */
3028 cb = AvARRAY (av)[0];
3029 AvARRAY (av)[0] = AvARRAY (av)[1];
3030 AvARRAY (av)[1] = cb;
3031
3032 cb = av_shift (av);
3033
3034 if (SvTYPE (cb) == SVt_PVCV)
3035 {
3036 dSP;
3037 PUSHMARK (SP);
3038 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3039 PUTBACK;
3040 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3041 }
3042 else
3043 {
3044 api_ready (aTHX_ cb);
3045 sv_setiv (cb, 0); /* signal waiter */
3046 }
3047
3048 SvREFCNT_dec (cb);
3049
3050 --count;
3051 }
3052}
3053
3054static int
3055slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3056{
3057 /* if we are about to throw, also stop waiting */
3058 return SvROK ((SV *)frame->data) && !CORO_THROW;
3059}
3060
3061static void
3062slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3063{
3064 AV *av = (AV *)SvRV (arg [0]);
3065
3066 if (items >= 2)
3067 {
3068 SV *cb_cv = s_get_cv_croak (arg [1]);
3069 av_push (av, SvREFCNT_inc_NN (cb_cv));
3070
3071 if (SvIVX (AvARRAY (av)[0]))
3072 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3073
3074 frame->prepare = prepare_nop;
3075 frame->check = slf_check_nop;
3076 }
3077 else if (SvIVX (AvARRAY (av)[0]))
3078 {
3079 SvIVX (AvARRAY (av)[0]) = 0;
3080 frame->prepare = prepare_nop;
3081 frame->check = slf_check_nop;
3082 }
3083 else
3084 {
3085 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3086
3087 av_push (av, waiter);
3088
3089 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3090 frame->prepare = prepare_schedule;
3091 frame->check = slf_check_signal_wait;
3092 }
2114} 3093}
2115 3094
2116/*****************************************************************************/ 3095/*****************************************************************************/
2117/* Coro::AIO */ 3096/* Coro::AIO */
2118 3097
… …
2129 3108
2130static void 3109static void
2131coro_aio_callback (pTHX_ CV *cv) 3110coro_aio_callback (pTHX_ CV *cv)
2132{ 3111{
2133 dXSARGS; 3112 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG; 3113 AV *state = (AV *)S_GENSUB_ARG;
2135 SV *coro = av_pop (state); 3114 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state)); 3115 SV *data_sv = newSV (sizeof (struct io_state));
2137 3116
2138 av_extend (state, items); 3117 av_extend (state, items - 1);
2139 3118
2140 sv_upgrade (data_sv, SVt_PV); 3119 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state)); 3120 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv); 3121 SvPOK_only (data_sv);
2143 3122
… …
2168static int 3147static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3148slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{ 3149{
2171 AV *state = (AV *)frame->data; 3150 AV *state = (AV *)frame->data;
2172 3151
3152 /* if we are about to throw, return early */
3153 /* this does not cancel the aio request, but at least */
3154 /* it quickly returns */
3155 if (CORO_THROW)
3156 return 0;
3157
2173 /* one element that is an RV? repeat! */ 3158 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3159 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1; 3160 return 1;
2176 3161
2177 /* restore status */ 3162 /* restore status */
… …
2218 dSP; 3203 dSP;
2219 3204
2220 static SV *prio_cv; 3205 static SV *prio_cv;
2221 static SV *prio_sv; 3206 static SV *prio_sv;
2222 3207
2223 if (expect_false (!prio_cv)) 3208 if (ecb_expect_false (!prio_cv))
2224 { 3209 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3210 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0); 3211 prio_sv = newSViv (0);
2227 } 3212 }
2228 3213
… …
2247 3232
2248 for (i = 0; i < items; ++i) 3233 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]); 3234 PUSHs (arg [i]);
2250 3235
2251 /* now push the callback closure */ 3236 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3237 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253 3238
2254 /* now call the AIO function - we assume our request is uncancelable */ 3239 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK; 3240 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD); 3241 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 } 3242 }
2258 3243
2259 /* now that the requets is going, we loop toll we have a result */ 3244 /* now that the request is going, we loop till we have a result */
2260 frame->data = (void *)state; 3245 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule; 3246 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req; 3247 frame->check = slf_check_aio_req;
2263} 3248}
2264 3249
2265static void 3250static void
2266coro_aio_req_xs (pTHX_ CV *cv) 3251coro_aio_req_xs (pTHX_ CV *cv)
2267{ 3252{
2268 dVAR;
2269 dXSARGS; 3253 dXSARGS;
2270 3254
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req); 3255 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272 3256
2273 XSRETURN_EMPTY; 3257 XSRETURN_EMPTY;
2274} 3258}
2275 3259
2276/*****************************************************************************/ 3260/*****************************************************************************/
3261
3262#if CORO_CLONE
3263# include "clone.c"
3264#endif
3265
3266/*****************************************************************************/
3267
3268static SV *
3269coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3270{
3271 SV *coro_sv;
3272 struct coro *coro;
3273 MAGIC *mg;
3274 HV *hv;
3275 SV *cb;
3276 int i;
3277
3278 if (argc > 0)
3279 {
3280 cb = s_get_cv_croak (argv [0]);
3281
3282 if (!is_coro)
3283 {
3284 if (CvISXSUB (cb))
3285 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3286
3287 if (!CvROOT (cb))
3288 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3289 }
3290 }
3291
3292 Newz (0, coro, 1, struct coro);
3293 coro->args = newAV ();
3294 coro->flags = CF_NEW;
3295
3296 if (coro_first) coro_first->prev = coro;
3297 coro->next = coro_first;
3298 coro_first = coro;
3299
3300 coro->hv = hv = newHV ();
3301 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3302 mg->mg_flags |= MGf_DUP;
3303 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3304
3305 if (argc > 0)
3306 {
3307 av_extend (coro->args, argc + is_coro - 1);
3308
3309 if (is_coro)
3310 {
3311 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3312 cb = (SV *)cv_coro_run;
3313 }
3314
3315 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3316
3317 for (i = 1; i < argc; i++)
3318 av_push (coro->args, newSVsv (argv [i]));
3319 }
3320
3321 return coro_sv;
3322}
3323
3324#ifndef __cplusplus
3325ecb_cold XS(boot_Coro__State);
3326#endif
2277 3327
2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3328MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2279 3329
2280PROTOTYPES: DISABLE 3330PROTOTYPES: DISABLE
2281 3331
… …
2286 coro_thx = PERL_GET_CONTEXT; 3336 coro_thx = PERL_GET_CONTEXT;
2287# endif 3337# endif
2288#endif 3338#endif
2289 BOOT_PAGESIZE; 3339 BOOT_PAGESIZE;
2290 3340
3341 cctx_current = cctx_new_empty ();
3342
2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3343 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3344 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2293 3345
2294 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3346 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2295 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3347 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2314 3366
2315 { 3367 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3368 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317 3369
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3370 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf, 3371 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2320 newSVpv ("coro_slf", 0), 0);
2321 3372
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3373 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf, 3374 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2324 newSVpv ("coro schedule like function", 0), 0);
2325 } 3375 }
2326 3376
2327 coroapi.ver = CORO_API_VERSION; 3377 coroapi.ver = CORO_API_VERSION;
2328 coroapi.rev = CORO_API_REVISION; 3378 coroapi.rev = CORO_API_REVISION;
2329 3379
… …
2334 coroapi.prepare_nop = prepare_nop; 3384 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule; 3385 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede; 3386 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself; 3387 coroapi.prepare_cede_notself = prepare_cede_notself;
2338 3388
2339 { 3389 time_init (aTHX);
2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2341 3390
2342 if (!svp) croak ("Time::HiRes is required");
2343 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2344
2345 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2346 }
2347
2348 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3391 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2349} 3392}
2350 3393
2351SV * 3394SV *
2352new (char *klass, ...) 3395new (SV *klass, ...)
3396 ALIAS:
3397 Coro::new = 1
2353 CODE: 3398 CODE:
2354{ 3399 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2355 struct coro *coro; 3400 OUTPUT:
2356 MAGIC *mg;
2357 HV *hv;
2358 int i;
2359
2360 Newz (0, coro, 1, struct coro);
2361 coro->args = newAV ();
2362 coro->flags = CF_NEW;
2363
2364 if (coro_first) coro_first->prev = coro;
2365 coro->next = coro_first;
2366 coro_first = coro;
2367
2368 coro->hv = hv = newHV ();
2369 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2370 mg->mg_flags |= MGf_DUP;
2371 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2372
2373 av_extend (coro->args, items - 1);
2374 for (i = 1; i < items; i++)
2375 av_push (coro->args, newSVsv (ST (i)));
2376}
2377 OUTPUT:
2378 RETVAL 3401 RETVAL
2379
2380void
2381_set_stacklevel (...)
2382 CODE:
2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2384 3402
2385void 3403void
2386transfer (...) 3404transfer (...)
2387 PROTOTYPE: $$ 3405 PROTOTYPE: $$
2388 CODE: 3406 CODE:
2389 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3407 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2390 3408
2391bool
2392_destroy (SV *coro_sv)
2393 CODE:
2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2395 OUTPUT:
2396 RETVAL
2397
2398void 3409void
2399_exit (int code) 3410_exit (int code)
2400 PROTOTYPE: $ 3411 PROTOTYPE: $
2401 CODE: 3412 CODE:
2402 _exit (code); 3413 _exit (code);
3414
3415SV *
3416clone (Coro::State coro)
3417 CODE:
3418{
3419#if CORO_CLONE
3420 struct coro *ncoro = coro_clone (aTHX_ coro);
3421 MAGIC *mg;
3422 /* TODO: too much duplication */
3423 ncoro->hv = newHV ();
3424 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3425 mg->mg_flags |= MGf_DUP;
3426 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3427#else
3428 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3429#endif
3430}
3431 OUTPUT:
3432 RETVAL
2403 3433
2404int 3434int
2405cctx_stacksize (int new_stacksize = 0) 3435cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$ 3436 PROTOTYPE: ;$
2407 CODE: 3437 CODE:
… …
2457 eval = 1 3487 eval = 1
2458 CODE: 3488 CODE:
2459{ 3489{
2460 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3490 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2461 { 3491 {
2462 struct coro temp; 3492 struct coro *current = SvSTATE_current;
3493 struct CoroSLF slf_save;
2463 3494
2464 if (!(coro->flags & CF_RUNNING)) 3495 if (current != coro)
2465 { 3496 {
2466 PUTBACK; 3497 PUTBACK;
2467 save_perl (aTHX_ &temp); 3498 save_perl (aTHX_ current);
2468 load_perl (aTHX_ coro); 3499 load_perl (aTHX_ coro);
3500 /* the coro is most likely in an active SLF call.
3501 * while not strictly required (the code we execute is
3502 * not allowed to call any SLF functions), it's cleaner
3503 * to reinitialise the slf_frame and restore it later.
3504 * This might one day allow us to actually do SLF calls
3505 * from code executed here.
3506 */
3507 slf_save = slf_frame;
3508 slf_frame.prepare = 0;
3509 SPAGAIN;
2469 } 3510 }
2470 3511
2471 {
2472 dSP;
2473 ENTER;
2474 SAVETMPS;
2475 PUTBACK;
2476 PUSHSTACK; 3512 PUSHSTACK;
3513
2477 PUSHMARK (SP); 3514 PUSHMARK (SP);
3515 PUTBACK;
2478 3516
2479 if (ix) 3517 if (ix)
2480 eval_sv (coderef, 0); 3518 eval_sv (coderef, 0);
2481 else 3519 else
2482 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3520 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2483 3521
2484 POPSTACK; 3522 POPSTACK;
2485 SPAGAIN; 3523 SPAGAIN;
2486 FREETMPS;
2487 LEAVE;
2488 PUTBACK;
2489 }
2490 3524
2491 if (!(coro->flags & CF_RUNNING)) 3525 if (current != coro)
2492 { 3526 {
3527 PUTBACK;
3528 slf_frame = slf_save;
2493 save_perl (aTHX_ coro); 3529 save_perl (aTHX_ coro);
2494 load_perl (aTHX_ &temp); 3530 load_perl (aTHX_ current);
2495 SPAGAIN; 3531 SPAGAIN;
2496 } 3532 }
2497 } 3533 }
2498} 3534}
2499 3535
… …
2502 PROTOTYPE: $ 3538 PROTOTYPE: $
2503 ALIAS: 3539 ALIAS:
2504 is_ready = CF_READY 3540 is_ready = CF_READY
2505 is_running = CF_RUNNING 3541 is_running = CF_RUNNING
2506 is_new = CF_NEW 3542 is_new = CF_NEW
2507 is_destroyed = CF_DESTROYED 3543 is_destroyed = CF_ZOMBIE
3544 is_zombie = CF_ZOMBIE
3545 is_suspended = CF_SUSPENDED
2508 CODE: 3546 CODE:
2509 RETVAL = boolSV (coro->flags & ix); 3547 RETVAL = boolSV (coro->flags & ix);
2510 OUTPUT: 3548 OUTPUT:
2511 RETVAL 3549 RETVAL
2512 3550
2513void 3551void
2514throw (Coro::State self, SV *throw = &PL_sv_undef) 3552throw (Coro::State self, SV *exception = &PL_sv_undef)
2515 PROTOTYPE: $;$ 3553 PROTOTYPE: $;$
2516 CODE: 3554 CODE:
2517{ 3555{
2518 struct coro *current = SvSTATE_current; 3556 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw; 3557 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2520 SvREFCNT_dec (*throwp); 3558 SvREFCNT_dec (*exceptionp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3559 SvGETMAGIC (exception);
3560 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2522} 3561}
2523 3562
2524void 3563void
2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3564api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$ 3565 PROTOTYPE: $;$
… …
2528 3567
2529SV * 3568SV *
2530has_cctx (Coro::State coro) 3569has_cctx (Coro::State coro)
2531 PROTOTYPE: $ 3570 PROTOTYPE: $
2532 CODE: 3571 CODE:
2533 RETVAL = boolSV (!!coro->cctx); 3572 /* maybe manage the running flag differently */
3573 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2534 OUTPUT: 3574 OUTPUT:
2535 RETVAL 3575 RETVAL
2536 3576
2537int 3577int
2538is_traced (Coro::State coro) 3578is_traced (Coro::State coro)
… …
2558 3598
2559void 3599void
2560force_cctx () 3600force_cctx ()
2561 PROTOTYPE: 3601 PROTOTYPE:
2562 CODE: 3602 CODE:
2563 SvSTATE_current->cctx->idle_sp = 0; 3603 cctx_current->idle_sp = 0;
2564 3604
2565void 3605void
2566swap_defsv (Coro::State self) 3606swap_defsv (Coro::State self)
2567 PROTOTYPE: $ 3607 PROTOTYPE: $
2568 ALIAS: 3608 ALIAS:
… …
2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3616 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2577 3617
2578 SV *tmp = *src; *src = *dst; *dst = tmp; 3618 SV *tmp = *src; *src = *dst; *dst = tmp;
2579 } 3619 }
2580 3620
3621void
3622cancel (Coro::State self)
3623 CODE:
3624 coro_state_destroy (aTHX_ self);
3625
3626SV *
3627enable_times (int enabled = enable_times)
3628 CODE:
3629{
3630 RETVAL = boolSV (enable_times);
3631
3632 if (enabled != enable_times)
3633 {
3634 enable_times = enabled;
3635
3636 coro_times_update ();
3637 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3638 }
3639}
3640 OUTPUT:
3641 RETVAL
3642
3643void
3644times (Coro::State self)
3645 PPCODE:
3646{
3647 struct coro *current = SvSTATE (coro_current);
3648
3649 if (ecb_expect_false (current == self))
3650 {
3651 coro_times_update ();
3652 coro_times_add (SvSTATE (coro_current));
3653 }
3654
3655 EXTEND (SP, 2);
3656 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3657 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3658
3659 if (ecb_expect_false (current == self))
3660 coro_times_sub (SvSTATE (coro_current));
3661}
3662
3663void
3664swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3665 CODE:
3666{
3667 struct coro *current = SvSTATE_current;
3668
3669 if (current == coro)
3670 SWAP_SVS (current);
3671
3672 if (!coro->swap_sv)
3673 coro->swap_sv = newAV ();
3674
3675 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3676 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3677
3678 if (current == coro)
3679 SWAP_SVS (current);
3680}
3681
2581 3682
2582MODULE = Coro::State PACKAGE = Coro 3683MODULE = Coro::State PACKAGE = Coro
2583 3684
2584BOOT: 3685BOOT:
2585{ 3686{
2586 int i;
2587
2588 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2589 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3687 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2590 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3688 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2591 3689 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2592 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3690 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2593 SvREADONLY_on (coro_current); 3691 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3692 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3693 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3694 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2594 3695
3696 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3697 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3698 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3699 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3700
2595 coro_stash = gv_stashpv ("Coro", TRUE); 3701 coro_stash = gv_stashpv ("Coro", TRUE);
2596 3702
2597 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3703 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2598 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3704 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2599 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3705 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2600 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3706 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2601 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3707 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2602 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3708 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2603
2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2605 coro_ready[i] = newAV ();
2606 3709
2607 { 3710 {
2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3711 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2609 3712
2610 coroapi.schedule = api_schedule; 3713 coroapi.schedule = api_schedule;
3714 coroapi.schedule_to = api_schedule_to;
2611 coroapi.cede = api_cede; 3715 coroapi.cede = api_cede;
2612 coroapi.cede_notself = api_cede_notself; 3716 coroapi.cede_notself = api_cede_notself;
2613 coroapi.ready = api_ready; 3717 coroapi.ready = api_ready;
2614 coroapi.is_ready = api_is_ready; 3718 coroapi.is_ready = api_is_ready;
2615 coroapi.nready = coro_nready; 3719 coroapi.nready = coro_nready;
2616 coroapi.current = coro_current; 3720 coroapi.current = coro_current;
2617 3721
2618 GCoroAPI = &coroapi; 3722 /*GCoroAPI = &coroapi;*/
2619 sv_setiv (sv, (IV)&coroapi); 3723 sv_setiv (sv, (IV)&coroapi);
2620 SvREADONLY_on (sv); 3724 SvREADONLY_on (sv);
2621 } 3725 }
2622} 3726}
3727
3728SV *
3729async (...)
3730 PROTOTYPE: &@
3731 CODE:
3732 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3733 api_ready (aTHX_ RETVAL);
3734 OUTPUT:
3735 RETVAL
3736
3737void
3738_destroy (Coro::State coro)
3739 CODE:
3740 /* used by the manager thread */
3741 coro_state_destroy (aTHX_ coro);
3742
3743void
3744on_destroy (Coro::State coro, SV *cb)
3745 CODE:
3746 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3747
3748void
3749join (...)
3750 CODE:
3751 CORO_EXECUTE_SLF_XS (slf_init_join);
3752
3753void
3754terminate (...)
3755 CODE:
3756 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3757
3758void
3759cancel (...)
3760 CODE:
3761 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3762
3763int
3764safe_cancel (Coro::State self, ...)
3765 C_ARGS: aTHX_ self, &ST (1), items - 1
2623 3766
2624void 3767void
2625schedule (...) 3768schedule (...)
2626 CODE: 3769 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3770 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3771
3772void
3773schedule_to (...)
3774 CODE:
3775 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3776
3777void
3778cede_to (...)
3779 CODE:
3780 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2628 3781
2629void 3782void
2630cede (...) 3783cede (...)
2631 CODE: 3784 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede); 3785 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2646void 3799void
2647_set_readyhook (SV *hook) 3800_set_readyhook (SV *hook)
2648 PROTOTYPE: $ 3801 PROTOTYPE: $
2649 CODE: 3802 CODE:
2650 SvREFCNT_dec (coro_readyhook); 3803 SvREFCNT_dec (coro_readyhook);
3804 SvGETMAGIC (hook);
3805 if (SvOK (hook))
3806 {
2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3807 coro_readyhook = newSVsv (hook);
3808 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3809 }
3810 else
3811 {
3812 coro_readyhook = 0;
3813 CORO_READYHOOK = 0;
3814 }
2652 3815
2653int 3816int
2654prio (Coro::State coro, int newprio = 0) 3817prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$ 3818 PROTOTYPE: $;$
2656 ALIAS: 3819 ALIAS:
… …
2662 if (items > 1) 3825 if (items > 1)
2663 { 3826 {
2664 if (ix) 3827 if (ix)
2665 newprio = coro->prio - newprio; 3828 newprio = coro->prio - newprio;
2666 3829
2667 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3830 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2668 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3831 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2669 3832
2670 coro->prio = newprio; 3833 coro->prio = newprio;
2671 } 3834 }
2672} 3835}
2673 OUTPUT: 3836 OUTPUT:
… …
2687 CODE: 3850 CODE:
2688 RETVAL = coro_nready; 3851 RETVAL = coro_nready;
2689 OUTPUT: 3852 OUTPUT:
2690 RETVAL 3853 RETVAL
2691 3854
2692# for async_pool speedup
2693void 3855void
2694_pool_1 (SV *cb) 3856suspend (Coro::State self)
3857 PROTOTYPE: $
2695 CODE: 3858 CODE:
2696{ 3859 self->flags |= CF_SUSPENDED;
2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2699 AV *defav = GvAV (PL_defgv);
2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2701 AV *invoke_av;
2702 int i, len;
2703 3860
2704 if (!invoke) 3861void
3862resume (Coro::State self)
3863 PROTOTYPE: $
3864 CODE:
3865 self->flags &= ~CF_SUSPENDED;
3866
3867void
3868_pool_handler (...)
3869 CODE:
3870 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3871
3872void
3873async_pool (SV *cv, ...)
3874 PROTOTYPE: &@
3875 PPCODE:
3876{
3877 HV *hv = (HV *)av_pop (av_async_pool);
3878 AV *av = newAV ();
3879 SV *cb = ST (0);
3880 int i;
3881
3882 av_extend (av, items - 2);
3883 for (i = 1; i < items; ++i)
3884 av_push (av, SvREFCNT_inc_NN (ST (i)));
3885
3886 if ((SV *)hv == &PL_sv_undef)
2705 { 3887 {
2706 SV *old = PL_diehook; 3888 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2707 PL_diehook = 0; 3889 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2708 SvREFCNT_dec (old); 3890 SvREFCNT_dec (sv);
2709 croak ("\3async_pool terminate\2\n");
2710 } 3891 }
2711 3892
2712 SvREFCNT_dec (coro->saved_deffh);
2713 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2714
2715 hv_store (hv, "desc", sizeof ("desc") - 1,
2716 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2717
2718 invoke_av = (AV *)SvRV (invoke);
2719 len = av_len (invoke_av);
2720
2721 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2722
2723 if (len > 0)
2724 { 3893 {
2725 av_fill (defav, len - 1); 3894 struct coro *coro = SvSTATE_hv (hv);
2726 for (i = 0; i < len; ++i) 3895
2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3896 assert (!coro->invoke_cb);
3897 assert (!coro->invoke_av);
3898 coro->invoke_cb = SvREFCNT_inc (cb);
3899 coro->invoke_av = av;
2728 } 3900 }
3901
3902 api_ready (aTHX_ (SV *)hv);
3903
3904 if (GIMME_V != G_VOID)
3905 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3906 else
3907 SvREFCNT_dec (hv);
2729} 3908}
3909
3910SV *
3911rouse_cb ()
3912 PROTOTYPE:
3913 CODE:
3914 RETVAL = coro_new_rouse_cb (aTHX);
3915 OUTPUT:
3916 RETVAL
2730 3917
2731void 3918void
2732_pool_2 (SV *cb) 3919rouse_wait (...)
3920 PROTOTYPE: ;$
3921 PPCODE:
3922 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3923
3924void
3925on_enter (SV *block)
3926 ALIAS:
3927 on_leave = 1
3928 PROTOTYPE: &
2733 CODE: 3929 CODE:
2734{ 3930{
2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv); 3931 struct coro *coro = SvSTATE_current;
3932 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2737 3933
2738 sv_setsv (cb, &PL_sv_undef); 3934 block = s_get_cv_croak (block);
2739 3935
2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3936 if (!*avp)
2741 coro->saved_deffh = 0; 3937 *avp = newAV ();
2742 3938
2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3939 av_push (*avp, SvREFCNT_inc (block));
2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2745 {
2746 SV *old = PL_diehook;
2747 PL_diehook = 0;
2748 SvREFCNT_dec (old);
2749 croak ("\3async_pool terminate\2\n");
2750 }
2751 3940
2752 av_clear (GvAV (PL_defgv)); 3941 if (!ix)
2753 hv_store (hv, "desc", sizeof ("desc") - 1, 3942 on_enterleave_call (aTHX_ block);
2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2755 3943
2756 coro->prio = 0; 3944 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2757 3945 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3946 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 api_trace (aTHX_ coro_current, 0);
2760
2761 av_push (av_async_pool, newSVsv (coro_current));
2762} 3947}
2763 3948
2764 3949
2765MODULE = Coro::State PACKAGE = PerlIO::cede 3950MODULE = Coro::State PACKAGE = PerlIO::cede
2766 3951
… …
2769 3954
2770 3955
2771MODULE = Coro::State PACKAGE = Coro::Semaphore 3956MODULE = Coro::State PACKAGE = Coro::Semaphore
2772 3957
2773SV * 3958SV *
2774new (SV *klass, SV *count_ = 0) 3959new (SV *klass, SV *count = 0)
2775 CODE: 3960 CODE:
2776{ 3961{
2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3962 int semcnt = 1;
2778 AV *av = newAV (); 3963
2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3964 if (count)
2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3965 {
3966 SvGETMAGIC (count);
3967
3968 if (SvOK (count))
3969 semcnt = SvIV (count);
3970 }
3971
3972 RETVAL = sv_bless (
3973 coro_waitarray_new (aTHX_ semcnt),
3974 GvSTASH (CvGV (cv))
3975 );
2781} 3976}
3977 OUTPUT:
3978 RETVAL
3979
3980# helper for Coro::Channel and others
3981SV *
3982_alloc (int count)
3983 CODE:
3984 RETVAL = coro_waitarray_new (aTHX_ count);
2782 OUTPUT: 3985 OUTPUT:
2783 RETVAL 3986 RETVAL
2784 3987
2785SV * 3988SV *
2786count (SV *self) 3989count (SV *self)
… …
2795 adjust = 1 3998 adjust = 1
2796 CODE: 3999 CODE:
2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4000 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2798 4001
2799void 4002void
2800down (SV *self) 4003down (...)
2801 CODE: 4004 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4005 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4006
4007void
4008wait (...)
4009 CODE:
4010 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2803 4011
2804void 4012void
2805try (SV *self) 4013try (SV *self)
2806 PPCODE: 4014 PPCODE:
2807{ 4015{
… …
2819 XSRETURN_NO; 4027 XSRETURN_NO;
2820} 4028}
2821 4029
2822void 4030void
2823waiters (SV *self) 4031waiters (SV *self)
2824 CODE: 4032 PPCODE:
2825{ 4033{
2826 AV *av = (AV *)SvRV (self); 4034 AV *av = (AV *)SvRV (self);
4035 int wcount = AvFILLp (av) + 1 - 1;
2827 4036
2828 if (GIMME_V == G_SCALAR) 4037 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4038 XPUSHs (sv_2mortal (newSViv (wcount)));
2830 else 4039 else
2831 { 4040 {
2832 int i; 4041 int i;
2833 EXTEND (SP, AvFILLp (av) + 1 - 1); 4042 EXTEND (SP, wcount);
2834 for (i = 1; i <= AvFILLp (av); ++i) 4043 for (i = 1; i <= wcount; ++i)
2835 PUSHs (newSVsv (AvARRAY (av)[i])); 4044 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2836 } 4045 }
2837} 4046}
4047
4048MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4049
4050void
4051_may_delete (SV *sem, int count, int extra_refs)
4052 PPCODE:
4053{
4054 AV *av = (AV *)SvRV (sem);
4055
4056 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4057 && AvFILLp (av) == 0 /* no waiters, just count */
4058 && SvIV (AvARRAY (av)[0]) == count)
4059 XSRETURN_YES;
4060
4061 XSRETURN_NO;
4062}
4063
4064MODULE = Coro::State PACKAGE = Coro::Signal
4065
4066SV *
4067new (SV *klass)
4068 CODE:
4069 RETVAL = sv_bless (
4070 coro_waitarray_new (aTHX_ 0),
4071 GvSTASH (CvGV (cv))
4072 );
4073 OUTPUT:
4074 RETVAL
4075
4076void
4077wait (...)
4078 CODE:
4079 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4080
4081void
4082broadcast (SV *self)
4083 CODE:
4084{
4085 AV *av = (AV *)SvRV (self);
4086 coro_signal_wake (aTHX_ av, AvFILLp (av));
4087}
4088
4089void
4090send (SV *self)
4091 CODE:
4092{
4093 AV *av = (AV *)SvRV (self);
4094
4095 if (AvFILLp (av))
4096 coro_signal_wake (aTHX_ av, 1);
4097 else
4098 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4099}
4100
4101IV
4102awaited (SV *self)
4103 CODE:
4104 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4105 OUTPUT:
4106 RETVAL
2838 4107
2839 4108
2840MODULE = Coro::State PACKAGE = Coro::AnyEvent 4109MODULE = Coro::State PACKAGE = Coro::AnyEvent
2841 4110
2842BOOT: 4111BOOT:
… …
2857 sv_setsv (sv_activity, &PL_sv_undef); 4126 sv_setsv (sv_activity, &PL_sv_undef);
2858 if (coro_nready >= incede) 4127 if (coro_nready >= incede)
2859 { 4128 {
2860 PUSHMARK (SP); 4129 PUSHMARK (SP);
2861 PUTBACK; 4130 PUTBACK;
2862 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4131 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2863 SPAGAIN;
2864 } 4132 }
2865 4133
2866 --incede; 4134 --incede;
2867} 4135}
2868 4136
… …
2871 4139
2872void 4140void
2873_register (char *target, char *proto, SV *req) 4141_register (char *target, char *proto, SV *req)
2874 CODE: 4142 CODE:
2875{ 4143{
2876 HV *st; 4144 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp; 4145 /* newXSproto doesn't return the CV on 5.8 */
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto); 4146 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4147 sv_setpv ((SV *)slf_cv, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4148 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881} 4149}
2882 4150
4151MODULE = Coro::State PACKAGE = Coro::Select
4152
4153void
4154patch_pp_sselect ()
4155 CODE:
4156 if (!coro_old_pp_sselect)
4157 {
4158 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4159 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4160 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4161 }
4162
4163void
4164unpatch_pp_sselect ()
4165 CODE:
4166 if (coro_old_pp_sselect)
4167 {
4168 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4169 coro_old_pp_sselect = 0;
4170 }
4171

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