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Comparing Coro/Coro/State.xs (file contents):
Revision 1.273 by root, Fri Nov 14 23:48:10 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
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 97# if CORO_PTHREAD
152static void *coro_thx; 98static void *coro_thx;
153# endif 99# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 100#endif
161 101
162# undef LOCK 102#ifdef __linux
163# define LOCK (void)0 103# include <time.h> /* for timespec */
164# undef UNLOCK 104# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 105# ifdef SYS_clock_gettime
166 106# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 107# define CORO_CLOCK_MONOTONIC 1
168struct io_state 108# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 109# endif
170 AV *res; 110#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 111
177static 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);
178 119
179static U32 cctx_gen; 120static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 121static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 122static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 123static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 124static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 125static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 126static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 127
128static AV *av_destroy; /* destruction queue */
129static SV *sv_manager; /* the manager coro */
130static SV *sv_idle; /* $Coro::idle */
187 131
188static GV *irsgv; /* $/ */ 132static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 133static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 134static SV *rv_diehook;
191static SV *rv_warnhook; 135static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 136static HV *hv_sig; /* %SIG */
193 137
194/* async_pool helper stuff */ 138/* async_pool helper stuff */
195static SV *sv_pool_rss; 139static SV *sv_pool_rss;
196static SV *sv_pool_size; 140static SV *sv_pool_size;
141static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 142static AV *av_async_pool; /* idle pool */
143static SV *sv_Coro; /* class string */
144static CV *cv_pool_handler;
198 145
199/* Coro::AnyEvent */ 146/* Coro::AnyEvent */
200static SV *sv_activity; 147static SV *sv_activity;
201 148
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
202static struct coro_cctx *cctx_first; 155static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 156static int cctx_count, cctx_idle;
204 157
205enum { 158enum
159{
206 CC_MAPPED = 0x01, 160 CC_MAPPED = 0x01,
207 CC_NOREUSE = 0x02, /* throw this away after tracing */ 161 CC_NOREUSE = 0x02, /* throw this away after tracing */
208 CC_TRACE = 0x04, 162 CC_TRACE = 0x04,
209 CC_TRACE_SUB = 0x08, /* trace sub calls */ 163 CC_TRACE_SUB = 0x08, /* trace sub calls */
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 164 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
231 int valgrind_id; 185 int valgrind_id;
232#endif 186#endif
233 unsigned char flags; 187 unsigned char flags;
234} coro_cctx; 188} coro_cctx;
235 189
190static coro_cctx *cctx_current; /* the currently running cctx */
191
192/*****************************************************************************/
193
194static MGVTBL coro_state_vtbl;
195
236enum { 196enum
197{
237 CF_RUNNING = 0x0001, /* coroutine is running */ 198 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 199 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 200 CF_NEW = 0x0004, /* has never been switched to */
240 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) */
241}; 204};
242 205
243/* 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 */
244typedef struct 207typedef struct
245{ 208{
246 SV *defsv; 209 SV *defsv;
247 AV *defav; 210 AV *defav;
248 SV *errsv; 211 SV *errsv;
249 SV *irsgv; 212 SV *irsgv;
213 HV *hinthv;
250#define VAR(name,type) type name; 214#define VAR(name,type) type name;
251# include "state.h" 215# include "state.h"
252#undef VAR 216#undef VAR
253} perl_slots; 217} perl_slots;
254 218
219// how many context stack entries do we need for perl_slots
255#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))
256 221
257/* this is a structure representing a perl-level coroutine */ 222/* this is a structure representing a perl-level coroutine */
258struct coro { 223struct coro
224{
259 /* the C coroutine allocated to this perl coroutine, if any */ 225 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 226 coro_cctx *cctx;
261 227
262 /* process data */ 228 /* ready queue */
229 struct coro *next_ready;
230
231 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 232 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 233 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 234 perl_slots *slot; /* basically the saved sp */
266 235
236 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 237 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 238 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 239 HV *hv; /* the perl hash associated with this coro, if any */
271 240
272 /* statistics */ 241 /* statistics */
273 int usecount; /* number of transfers to this coro */ 242 int usecount; /* number of transfers to this coro */
274 243
275 /* coro process data */ 244 /* coro process data */
276 int prio; 245 int prio;
277 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 */
278 250
279 /* async_pool */ 251 /* async_pool */
280 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;
281 265
282 /* linked list */ 266 /* linked list */
283 struct coro *next, *prev; 267 struct coro *next, *prev;
284}; 268};
285 269
286typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
288 272
273/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */
275/* the main reason we don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 276static struct CoroSLF slf_frame; /* the current slf frame */
290 277
291/** Coro ********************************************************************/ 278/** Coro ********************************************************************/
292 279
293#define PRIO_MAX 3 280#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 281#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 282#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 283#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 284#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 285#define CORO_PRIO_MIN -4
299 286
300/* for Coro.pm */ 287/* for Coro.pm */
301static SV *coro_current; 288static SV *coro_current;
302static SV *coro_readyhook; 289static SV *coro_readyhook;
303static 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;
304static struct coro *coro_first; 292static struct coro *coro_first;
305#define coro_nready coroapi.nready 293#define coro_nready coroapi.nready
306 294
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
307/** lowlevel stuff **********************************************************/ 367/** lowlevel stuff **********************************************************/
308 368
309static SV * 369static SV * ecb_noinline
310coro_get_sv (pTHX_ const char *name, int create) 370coro_get_sv (pTHX_ const char *name, int create)
311{ 371{
312#if PERL_VERSION_ATLEAST (5,10,0) 372#if PERL_VERSION_ATLEAST (5,10,0)
313 /* 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 */
314 get_sv (name, create); 374 get_sv (name, create);
315#endif 375#endif
316 return get_sv (name, create); 376 return get_sv (name, create);
317} 377}
318 378
319static AV * 379static AV * ecb_noinline
320coro_get_av (pTHX_ const char *name, int create) 380coro_get_av (pTHX_ const char *name, int create)
321{ 381{
322#if PERL_VERSION_ATLEAST (5,10,0) 382#if PERL_VERSION_ATLEAST (5,10,0)
323 /* 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 */
324 get_av (name, create); 384 get_av (name, create);
325#endif 385#endif
326 return get_av (name, create); 386 return get_av (name, create);
327} 387}
328 388
329static HV * 389static HV * ecb_noinline
330coro_get_hv (pTHX_ const char *name, int create) 390coro_get_hv (pTHX_ const char *name, int create)
331{ 391{
332#if PERL_VERSION_ATLEAST (5,10,0) 392#if PERL_VERSION_ATLEAST (5,10,0)
333 /* 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 */
334 get_hv (name, create); 394 get_hv (name, create);
335#endif 395#endif
336 return get_hv (name, create); 396 return get_hv (name, create);
337} 397}
338 398
339static 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 *
340coro_clone_padlist (pTHX_ CV *cv) 505coro_derive_padlist (pTHX_ CV *cv)
341{ 506{
342 AV *padlist = CvPADLIST (cv); 507 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 508 AV *newpadlist, *newpad;
344 509
345 newpadlist = newAV (); 510 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 516#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 518 --AvFILLp (padlist);
354 519
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 521 av_store (newpadlist, 1, (SV *)newpad);
357 522
358 return newpadlist; 523 return newpadlist;
359} 524}
360 525
361static void 526ECB_INLINE void
362free_padlist (pTHX_ AV *padlist) 527free_padlist (pTHX_ AV *padlist)
363{ 528{
364 /* may be during global destruction */ 529 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 530 if (!IN_DESTRUCT)
366 { 531 {
367 I32 i = AvFILLp (padlist); 532 I32 i = AvFILLp (padlist);
368 while (i >= 0) 533
534 while (i > 0) /* special-case index 0 */
369 { 535 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 536 /* we try to be extra-careful here */
371 if (svp) 537 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 538 I32 j = AvFILLp (av);
373 SV *sv; 539
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 540 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]);
542
543 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 544 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 545 }
380 546
547 SvREFCNT_dec (AvARRAY (padlist)[0]);
548
549 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 550 SvREFCNT_dec ((SV*)padlist);
382 } 551 }
383} 552}
384 553
385static int 554static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 555coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 556{
388 AV *padlist; 557 AV *padlist;
389 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;
390 563
391 /* casting is fun. */ 564 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 566 free_padlist (aTHX_ padlist);
394 567
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 569
397 return 0; 570 return 0;
398} 571}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 572
403static MGVTBL coro_cv_vtbl = { 573static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 574 0, 0, 0, 0,
405 coro_cv_free 575 coro_cv_free
406}; 576};
407 577
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443
444/* the next two functions merely cache the padlists */ 578/* the next two functions merely cache the padlists */
445static void 579ECB_INLINE void
446get_padlist (pTHX_ CV *cv) 580get_padlist (pTHX_ CV *cv)
447{ 581{
448 MAGIC *mg = CORO_MAGIC_cv (cv); 582 MAGIC *mg = CORO_MAGIC_cv (cv);
449 AV *av; 583 AV *av;
450 584
451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 585 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 586 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
453 else 587 else
454 { 588 {
455#if CORO_PREFER_PERL_FUNCTIONS 589#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 590 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 591 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 592 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 593 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 594 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 595 SvREFCNT_dec (cp);
462#else 596#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 598#endif
465 } 599 }
466} 600}
467 601
468static void 602ECB_INLINE void
469put_padlist (pTHX_ CV *cv) 603put_padlist (pTHX_ CV *cv)
470{ 604{
471 MAGIC *mg = CORO_MAGIC_cv (cv); 605 MAGIC *mg = CORO_MAGIC_cv (cv);
472 AV *av; 606 AV *av;
473 607
474 if (expect_false (!mg)) 608 if (ecb_expect_false (!mg))
475 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);
476 610
477 av = (AV *)mg->mg_obj; 611 av = (AV *)mg->mg_obj;
478 612
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 613 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 614 av_extend (av, AvFILLp (av) + 1);
481 615
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 617}
484 618
485/** 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);
486 674
487static void 675static void
488load_perl (pTHX_ Coro__State c) 676load_perl (pTHX_ Coro__State c)
489{ 677{
490 perl_slots *slot = c->slot; 678 perl_slots *slot = c->slot;
491 c->slot = 0; 679 c->slot = 0;
492 680
493 PL_mainstack = c->mainstack; 681 PL_mainstack = c->mainstack;
494 682
495 GvSV (PL_defgv) = slot->defsv; 683 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 684 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 685 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
499 688
500 #define VAR(name,type) PL_ ## name = slot->name; 689 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 690 # include "state.h"
502 #undef VAR 691 #undef VAR
503 692
… …
505 dSP; 694 dSP;
506 695
507 CV *cv; 696 CV *cv;
508 697
509 /* now do the ugly restore mess */ 698 /* now do the ugly restore mess */
510 while (expect_true (cv = (CV *)POPs)) 699 while (ecb_expect_true (cv = (CV *)POPs))
511 { 700 {
512 put_padlist (aTHX_ cv); /* mark this padlist as available */ 701 put_padlist (aTHX_ cv); /* mark this padlist as available */
513 CvDEPTH (cv) = PTR2IV (POPs); 702 CvDEPTH (cv) = PTR2IV (POPs);
514 CvPADLIST (cv) = (AV *)POPs; 703 CvPADLIST (cv) = (AV *)POPs;
515 } 704 }
516 705
517 PUTBACK; 706 PUTBACK;
518 } 707 }
519 708
520 slf_frame = c->slf_frame; 709 slf_frame = c->slf_frame;
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);
521} 729}
522 730
523static void 731static void
524save_perl (pTHX_ Coro__State c) 732save_perl (pTHX_ Coro__State c)
525{ 733{
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;
526 c->slf_frame = slf_frame; 753 c->slf_frame = slf_frame;
527 754
528 { 755 {
529 dSP; 756 dSP;
530 I32 cxix = cxstack_ix; 757 I32 cxix = cxstack_ix;
… …
538 765
539 XPUSHs (Nullsv); 766 XPUSHs (Nullsv);
540 /* this loop was inspired by pp_caller */ 767 /* this loop was inspired by pp_caller */
541 for (;;) 768 for (;;)
542 { 769 {
543 while (expect_true (cxix >= 0)) 770 while (ecb_expect_true (cxix >= 0))
544 { 771 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 772 PERL_CONTEXT *cx = &ccstk[cxix--];
546 773
547 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))
548 { 775 {
549 CV *cv = cx->blk_sub.cv; 776 CV *cv = cx->blk_sub.cv;
550 777
551 if (expect_true (CvDEPTH (cv))) 778 if (ecb_expect_true (CvDEPTH (cv)))
552 { 779 {
553 EXTEND (SP, 3); 780 EXTEND (SP, 3);
554 PUSHs ((SV *)CvPADLIST (cv)); 781 PUSHs ((SV *)CvPADLIST (cv));
555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 782 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
556 PUSHs ((SV *)cv); 783 PUSHs ((SV *)cv);
… …
559 get_padlist (aTHX_ cv); 786 get_padlist (aTHX_ cv);
560 } 787 }
561 } 788 }
562 } 789 }
563 790
564 if (expect_true (top_si->si_type == PERLSI_MAIN)) 791 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
565 break; 792 break;
566 793
567 top_si = top_si->si_prev; 794 top_si = top_si->si_prev;
568 ccstk = top_si->si_cxstack; 795 ccstk = top_si->si_cxstack;
569 cxix = top_si->si_cxix; 796 cxix = top_si->si_cxix;
… …
571 798
572 PUTBACK; 799 PUTBACK;
573 } 800 }
574 801
575 /* allocate some space on the context stack for our purposes */ 802 /* allocate some space on the context stack for our purposes */
576 /* we manually unroll here, as usually 2 slots is enough */ 803 if (ecb_expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
577 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC;
580 { 804 {
581 int i; 805 unsigned int i;
806
582 for (i = 3; i < SLOT_COUNT; ++i) 807 for (i = 0; i < SLOT_COUNT; ++i)
583 CXINC; 808 CXINC;
584 } 809
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 810 cxstack_ix -= SLOT_COUNT; /* undo allocation */
811 }
586 812
587 c->mainstack = PL_mainstack; 813 c->mainstack = PL_mainstack;
588 814
589 { 815 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 816 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 817
592 slot->defav = GvAV (PL_defgv); 818 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 819 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 820 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 821 slot->irsgv = GvSV (irsgv);
822 slot->hinthv = GvHV (PL_hintgv);
596 823
597 #define VAR(name,type) slot->name = PL_ ## name; 824 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 825 # include "state.h"
599 #undef VAR 826 #undef VAR
600 } 827 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 832 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 833 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 834 * not usually need a lot of stackspace.
608 */ 835 */
609#if CORO_PREFER_PERL_FUNCTIONS 836#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 837# define coro_init_stacks(thx) init_stacks ()
611#else 838#else
612static void 839static void
613coro_init_stacks (pTHX) 840coro_init_stacks (pTHX)
614{ 841{
615 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() */
616 PL_curstackinfo->si_type = PERLSI_MAIN; 843 PL_curstackinfo->si_type = PERLSI_MAIN;
617 PL_curstack = PL_curstackinfo->si_stack; 844 PL_curstack = PL_curstackinfo->si_stack;
618 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 845 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
619 846
620 PL_stack_base = AvARRAY(PL_curstack); 847 PL_stack_base = AvARRAY(PL_curstack);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 905#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 906 Safefree (PL_retstack);
680#endif 907#endif
681} 908}
682 909
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
683static size_t 919static size_t
684coro_rss (pTHX_ struct coro *coro) 920coro_rss (pTHX_ struct coro *coro)
685{ 921{
686 size_t rss = sizeof (*coro); 922 size_t rss = sizeof (*coro);
687 923
688 if (coro->mainstack) 924 if (coro->mainstack)
689 { 925 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 926 if (coro->flags & CF_RUNNING)
694 { 927 {
695 slot = &tmp_slot; 928 #define SYM(sym) PL_ ## sym
696 929 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 930 #undef SYM
700 } 931 }
701 else 932 else
702 slot = coro->slot;
703
704 if (slot)
705 { 933 {
706 rss += sizeof (slot->curstackinfo); 934 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 935 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 936 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 937 }
718 } 938 }
719 939
720 return rss; 940 return rss;
721} 941}
… …
734#endif 954#endif
735 955
736/* 956/*
737 * This overrides the default magic get method of %SIG elements. 957 * This overrides the default magic get method of %SIG elements.
738 * 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
739 * 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),
740 * readback here. 960 * we just provide our own readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 961 */
745static int 962static int ecb_cold
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 963coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 964{
748 const char *s = MgPV_nolen_const (mg); 965 const char *s = MgPV_nolen_const (mg);
749 966
750 if (*s == '_') 967 if (*s == '_')
… …
762 } 979 }
763 980
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 981 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765} 982}
766 983
767static int 984static int ecb_cold
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 985coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{ 986{
770 const char *s = MgPV_nolen_const (mg); 987 const char *s = MgPV_nolen_const (mg);
771 988
772 if (*s == '_') 989 if (*s == '_')
… …
786 } 1003 }
787 1004
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1005 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789} 1006}
790 1007
791static int 1008static int ecb_cold
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1009coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{ 1010{
794 const char *s = MgPV_nolen_const (mg); 1011 const char *s = MgPV_nolen_const (mg);
795 1012
796 if (*s == '_') 1013 if (*s == '_')
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1018 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 1019
803 if (svp) 1020 if (svp)
804 { 1021 {
805 SV *old = *svp; 1022 SV *old = *svp;
806 *svp = newSVsv (sv); 1023 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 1024 SvREFCNT_dec (old);
808 return 0; 1025 return 0;
809 } 1026 }
810 } 1027 }
811 1028
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1029 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 1030}
814 1031
815static void 1032static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 1033prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 1034{
818 /* kind of mega-hacky, but works */ 1035 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 1036 ta->next = ta->prev = (struct coro *)ta;
820} 1037}
821 1038
822static int 1039static int
823slf_check_nop (aTHX) 1040slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 1041{
825 return 0; 1042 return 0;
826} 1043}
827 1044
828static void 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 */
829coro_setup (pTHX_ struct coro *coro) 1054init_perl (pTHX_ struct coro *coro)
830{ 1055{
831 /* 1056 /*
832 * emulate part of the perl startup here. 1057 * emulate part of the perl startup here.
833 */ 1058 */
834 coro_init_stacks (aTHX); 1059 coro_init_stacks (aTHX);
835 1060
836 PL_runops = RUNOPS_DEFAULT; 1061 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1062 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1063 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1064 PL_comppad = 0;
1065 PL_comppad_name = 0;
1066 PL_comppad_name_fill = 0;
1067 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1068 PL_curpm = 0;
841 PL_curpad = 0; 1069 PL_curpad = 0;
842 PL_localizing = 0; 1070 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1071 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1072#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1073 PL_parser = 0;
847#endif 1074#endif
1075 PL_hints = 0;
848 1076
849 /* recreate the die/warn hooks */ 1077 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1078 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1079 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1080
853 GvSV (PL_defgv) = newSV (0); 1081 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1082 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1083 GvSV (PL_errgv) = newSV (0);
856 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;
857 PL_rs = newSVsv (GvSV (irsgv)); 1086 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1087 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1088
860 { 1089 {
861 dSP; 1090 dSP;
862 UNOP myop; 1091 UNOP myop;
863 1092
864 Zero (&myop, 1, UNOP); 1093 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1094 myop.op_next = Nullop;
1095 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1096 myop.op_flags = OPf_WANT_VOID;
867 1097
868 PUSHMARK (SP); 1098 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1099 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1100 PUTBACK;
871 PL_op = (OP *)&myop; 1101 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1102 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1103 }
875 1104
876 /* 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
877 * 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.
878 */ 1107 */
879 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 */
880 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 */
881} 1110 slf_frame.destroy = 0;
882 1111
1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
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 */
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
883static void 1132static void
884coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
885{ 1134{
886 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
887 { 1136 {
888 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
898 1147
899 /* unwind main stack */ 1148 /* unwind main stack */
900 dounwind (-1); 1149 dounwind (-1);
901 } 1150 }
1151}
902 1152
903 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
906 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1157
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 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
913 SvREFCNT_dec (coro->saved_deffh); 1201 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1202 SvREFCNT_dec (coro->rouse_cb);
915 1203 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1204 SvREFCNT_dec (coro->invoke_av);
1205 }
917} 1206}
918 1207
919INLINE void 1208ECB_INLINE void
920free_coro_mortal (pTHX) 1209free_coro_mortal (pTHX)
921{ 1210{
922 if (expect_true (coro_mortal)) 1211 if (ecb_expect_true (coro_mortal))
923 { 1212 {
924 SvREFCNT_dec (coro_mortal); 1213 SvREFCNT_dec ((SV *)coro_mortal);
925 coro_mortal = 0; 1214 coro_mortal = 0;
926 } 1215 }
927} 1216}
928 1217
929static int 1218static int
930runops_trace (pTHX) 1219runops_trace (pTHX)
931{ 1220{
932 COP *oldcop = 0; 1221 COP *oldcop = 0;
933 int oldcxix = -2; 1222 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1223
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1224 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1225 {
939 PERL_ASYNC_CHECK (); 1226 PERL_ASYNC_CHECK ();
940 1227
941 if (cctx->flags & CC_TRACE_ALL) 1228 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1229 {
943 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)
944 { 1231 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1232 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1233 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1234 AV *av = newAV (); /* return values */
948 SV **cb; 1235 SV **cb;
… …
985 1272
986 if (PL_curcop != &PL_compiling) 1273 if (PL_curcop != &PL_compiling)
987 { 1274 {
988 SV **cb; 1275 SV **cb;
989 1276
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1277 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1278 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1279 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1280
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1281 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1282 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1283 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1284 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1285 SV *fullname = sv_2mortal (newSV (0));
1000 1286
1001 if (isGV (gv)) 1287 if (isGV (gv))
… …
1006 SAVETMPS; 1292 SAVETMPS;
1007 EXTEND (SP, 3); 1293 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1294 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1295 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1296 PUSHs (fullname);
1011 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);
1012 PUTBACK; 1298 PUTBACK;
1013 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);
1014 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);
1015 SPAGAIN; 1301 SPAGAIN;
1016 FREETMPS; 1302 FREETMPS;
… …
1019 } 1305 }
1020 1306
1021 oldcxix = cxstack_ix; 1307 oldcxix = cxstack_ix;
1022 } 1308 }
1023 1309
1024 if (cctx->flags & CC_TRACE_LINE) 1310 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1311 {
1026 dSP; 1312 dSP;
1027 1313
1028 PL_runops = RUNOPS_DEFAULT; 1314 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1315 ENTER;
… …
1048 1334
1049 TAINT_NOT; 1335 TAINT_NOT;
1050 return 0; 1336 return 0;
1051} 1337}
1052 1338
1339static struct CoroSLF cctx_ssl_frame;
1340
1053static void 1341static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1342slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1343{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1344 ta->prev = 0;
1058} 1345}
1059 1346
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1347static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1348slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
1064static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx)
1066{ 1349{
1067 dSP; 1350 *frame = cctx_ssl_frame;
1068 UNOP myop;
1069 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{
1070 PL_top_env = &PL_start_env; 1359 PL_top_env = &PL_start_env;
1071 1360
1072 if (cctx->flags & CC_TRACE) 1361 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1362 PL_runops = runops_trace;
1074 1363
1075 Zero (&myop, 1, UNOP); 1364 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1365 * that can lead to creation of a new cctx */
1077 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));
1078 1368
1079 PUSHMARK (SP); 1369 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1370 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1371
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1372 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1373 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1374}
1088 1375
1089/* 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 */
1090INLINE void 1377ECB_INLINE void
1091transfer_tail (pTHX) 1378transfer_tail (pTHX)
1092{ 1379{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1380 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1381}
1109 1382
1110/* 1383/*
1111 * this is a _very_ stripped down perl interpreter ;) 1384 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1385 */
… …
1124 /* normally we would need to skip the entersub here */ 1397 /* normally we would need to skip the entersub here */
1125 /* 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 */
1126 /* PL_nop = PL_nop->op_next */ 1399 /* PL_nop = PL_nop->op_next */
1127 1400
1128 /* inject a fake subroutine call to cctx_init */ 1401 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1402 cctx_prepare (aTHX);
1130 1403
1131 /* cctx_run is the alternative tail of transfer() */ 1404 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1405 transfer_tail (aTHX);
1134 1406
1135 /* 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 */
1136 PL_restartop = PL_op; 1408 PL_restartop = PL_op;
1137 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 */
1138 1415
1139 /* 1416 /*
1140 * 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
1141 * 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)
1142 * 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
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1420 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * 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.
1145 */ 1424 */
1146 PL_top_env = main_top_env; 1425 PL_top_env = main_top_env;
1147 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 */
1148 } 1427 }
1149} 1428}
… …
1226cctx_destroy (coro_cctx *cctx) 1505cctx_destroy (coro_cctx *cctx)
1227{ 1506{
1228 if (!cctx) 1507 if (!cctx)
1229 return; 1508 return;
1230 1509
1510 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1511
1231 --cctx_count; 1512 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1513 coro_destroy (&cctx->cctx);
1233 1514
1234 /* coro_transfer creates new, empty cctx's */ 1515 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1516 if (cctx->sptr)
… …
1253#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))
1254 1535
1255static coro_cctx * 1536static coro_cctx *
1256cctx_get (pTHX) 1537cctx_get (pTHX)
1257{ 1538{
1258 while (expect_true (cctx_first)) 1539 while (ecb_expect_true (cctx_first))
1259 { 1540 {
1260 coro_cctx *cctx = cctx_first; 1541 coro_cctx *cctx = cctx_first;
1261 cctx_first = cctx->next; 1542 cctx_first = cctx->next;
1262 --cctx_idle; 1543 --cctx_idle;
1263 1544
1264 if (expect_true (!CCTX_EXPIRED (cctx))) 1545 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1265 return cctx; 1546 return cctx;
1266 1547
1267 cctx_destroy (cctx); 1548 cctx_destroy (cctx);
1268 } 1549 }
1269 1550
… …
1274cctx_put (coro_cctx *cctx) 1555cctx_put (coro_cctx *cctx)
1275{ 1556{
1276 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));
1277 1558
1278 /* free another cctx if overlimit */ 1559 /* free another cctx if overlimit */
1279 if (expect_false (cctx_idle >= cctx_max_idle)) 1560 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1280 { 1561 {
1281 coro_cctx *first = cctx_first; 1562 coro_cctx *first = cctx_first;
1282 cctx_first = first->next; 1563 cctx_first = first->next;
1283 --cctx_idle; 1564 --cctx_idle;
1284 1565
… …
1293/** coroutine switching *****************************************************/ 1574/** coroutine switching *****************************************************/
1294 1575
1295static void 1576static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1577transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1578{
1579 /* TODO: throwing up here is considered harmful */
1580
1298 if (expect_true (prev != next)) 1581 if (ecb_expect_true (prev != next))
1299 { 1582 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1583 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 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,");
1302 1585
1303 if (expect_false (next->flags & CF_RUNNING)) 1586 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED))
1307 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,");
1308 1588
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1589#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1590 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1311 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,");
1312#endif 1592#endif
1313 } 1593 }
1314} 1594}
1315 1595
1316/* always use the TRANSFER macro */ 1596/* always use the TRANSFER macro */
1317static void NOINLINE 1597static void ecb_noinline /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1598transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1599{
1320 dSTACKLEVEL; 1600 dSTACKLEVEL;
1321 1601
1322 /* sometimes transfer is only called to set idle_sp */ 1602 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1603 if (ecb_expect_false (!prev))
1324 { 1604 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1605 cctx_current->idle_sp = STACKLEVEL;
1326 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 */
1327 } 1607 }
1328 else if (expect_true (prev != next)) 1608 else if (ecb_expect_true (prev != next))
1329 { 1609 {
1330 coro_cctx *prev__cctx; 1610 coro_cctx *cctx_prev;
1331 1611
1332 if (expect_false (prev->flags & CF_NEW)) 1612 if (ecb_expect_false (prev->flags & CF_NEW))
1333 { 1613 {
1334 /* create a new empty/source context */ 1614 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1615 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1616 prev->flags |= CF_RUNNING;
1338 } 1617 }
1339 1618
1340 prev->flags &= ~CF_RUNNING; 1619 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1620 next->flags |= CF_RUNNING;
1342 1621
1343 LOCK;
1344
1345 /* first get rid of the old state */ 1622 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1623 save_perl (aTHX_ prev);
1347 1624
1348 if (expect_false (next->flags & CF_NEW)) 1625 if (ecb_expect_false (next->flags & CF_NEW))
1349 { 1626 {
1350 /* need to start coroutine */ 1627 /* need to start coroutine */
1351 next->flags &= ~CF_NEW; 1628 next->flags &= ~CF_NEW;
1352 /* setup coroutine call */ 1629 /* setup coroutine call */
1353 coro_setup (aTHX_ next); 1630 init_perl (aTHX_ next);
1354 } 1631 }
1355 else 1632 else
1356 load_perl (aTHX_ next); 1633 load_perl (aTHX_ next);
1357 1634
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1635 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1636 if (ecb_expect_true (
1362 prev__cctx->idle_sp == stacklevel 1637 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1638 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1639 && !force_cctx
1365 )) 1640 ))
1366 { 1641 {
1367 /* 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 */
1368 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));
1369 1644
1370 prev->cctx = 0;
1371
1372 /* 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. */
1373 /* 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 */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1647 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1648 if (ecb_expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1649 next->cctx = cctx_get (aTHX);
1377 1650
1378 cctx_put (prev__cctx); 1651 cctx_put (cctx_current);
1379 } 1652 }
1653 else
1654 prev->cctx = cctx_current;
1380 1655
1381 ++next->usecount; 1656 ++next->usecount;
1382 1657
1383 if (expect_true (!next->cctx)) 1658 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1659 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1660
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1661 next->cctx = 0;
1387 transfer_next = next;
1388 1662
1389 if (expect_false (prev__cctx != next->cctx)) 1663 if (ecb_expect_false (cctx_prev != cctx_current))
1390 { 1664 {
1391 prev__cctx->top_env = PL_top_env; 1665 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1666 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1667 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1668 }
1395 1669
1396 transfer_tail (aTHX); 1670 transfer_tail (aTHX);
1397 } 1671 }
1398} 1672}
… …
1400#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))
1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1675#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1402 1676
1403/** high level stuff ********************************************************/ 1677/** high level stuff ********************************************************/
1404 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 */
1405static int 1681static void
1682coro_call_on_destroy (pTHX_ struct coro *coro);
1683
1684static void
1406coro_state_destroy (pTHX_ struct coro *coro) 1685coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1686{
1408 if (coro->flags & CF_DESTROYED) 1687 if (coro->flags & CF_ZOMBIE)
1409 return 0; 1688 return;
1410 1689
1690 slf_destroy (aTHX_ coro);
1691
1411 coro->flags |= CF_DESTROYED; 1692 coro->flags |= CF_ZOMBIE;
1412 1693
1413 if (coro->flags & CF_READY) 1694 if (coro->flags & CF_READY)
1414 { 1695 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1696 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1697 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1698 --coro_nready;
1419 UNLOCK;
1420 } 1699 }
1421 else 1700 else
1422 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 */
1423
1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1425 {
1426 struct coro temp;
1427
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1429
1430 save_perl (aTHX_ &temp);
1431 load_perl (aTHX_ coro);
1432
1433 coro_destruct (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439
1440 cctx_destroy (coro->cctx);
1441 SvREFCNT_dec (coro->args);
1442 1702
1443 if (coro->next) coro->next->prev = coro->prev; 1703 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1704 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1705 if (coro == coro_first) coro_first = coro->next;
1446 1706
1447 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 */
1448} 1722}
1449 1723
1450static int 1724static int
1451coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1725coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1452{ 1726{
1453 struct coro *coro = (struct coro *)mg->mg_ptr; 1727 struct coro *coro = (struct coro *)mg->mg_ptr;
1454 mg->mg_ptr = 0; 1728 mg->mg_ptr = 0;
1455 1729
1456 coro->hv = 0;
1457
1458 if (--coro->refcnt < 0)
1459 {
1460 coro_state_destroy (aTHX_ coro); 1730 coro_state_destroy (aTHX_ coro);
1731 SvREFCNT_dec (coro->on_destroy);
1732 SvREFCNT_dec (coro->status);
1733
1461 Safefree (coro); 1734 Safefree (coro);
1462 }
1463 1735
1464 return 0; 1736 return 0;
1465} 1737}
1466 1738
1467static int 1739static int ecb_cold
1468coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1740coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1469{ 1741{
1470 struct coro *coro = (struct coro *)mg->mg_ptr; 1742 /* called when perl clones the current process the slow way (windows process emulation) */
1471 1743 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1472 ++coro->refcnt; 1744 mg->mg_ptr = 0;
1745 mg->mg_virtual = 0;
1473 1746
1474 return 0; 1747 return 0;
1475} 1748}
1476 1749
1477static MGVTBL coro_state_vtbl = { 1750static MGVTBL coro_state_vtbl = {
… …
1502 TRANSFER (ta, 1); 1775 TRANSFER (ta, 1);
1503} 1776}
1504 1777
1505/** Coro ********************************************************************/ 1778/** Coro ********************************************************************/
1506 1779
1507static void 1780ECB_INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1781coro_enq (pTHX_ struct coro *coro)
1509{ 1782{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1783 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1784
1513static 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 *
1514coro_deq (pTHX) 1793coro_deq (pTHX)
1515{ 1794{
1516 int prio; 1795 int prio;
1517 1796
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1797 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1798 {
1520 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 }
1521 1808
1522 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;
1523} 1827}
1524 1828
1525static int 1829static int
1526api_ready (pTHX_ SV *coro_sv) 1830api_ready (pTHX_ SV *coro_sv)
1527{ 1831{
1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1531
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1832 struct coro *coro = SvSTATE (coro_sv);
1536 1833
1537 if (coro->flags & CF_READY) 1834 if (coro->flags & CF_READY)
1538 return 0; 1835 return 0;
1539 1836
1540 coro->flags |= CF_READY; 1837 coro->flags |= CF_READY;
1541 1838
1542 LOCK; 1839 coro_enq (aTHX_ coro);
1543 1840
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1841 if (!coro_nready++)
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1842 if (coroapi.readyhook)
1546 1843 coroapi.readyhook ();
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1548 ++coro_nready;
1549
1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1570 1844
1571 return 1; 1845 return 1;
1572} 1846}
1573 1847
1574static int 1848static int
1575api_is_ready (pTHX_ SV *coro_sv) 1849api_is_ready (pTHX_ SV *coro_sv)
1576{ 1850{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1851 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1852}
1579 1853
1854/* expects to own a reference to next->hv */
1580INLINE void 1855ECB_INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1856prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1857{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1858 SV *prev_sv = SvRV (coro_current);
1859
1627 ta->prev = SvSTATE (prev_sv); 1860 ta->prev = SvSTATE_hv (prev_sv);
1861 ta->next = next;
1862
1628 TRANSFER_CHECK (*ta); 1863 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1864
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1865 SvRV_set (coro_current, (SV *)next->hv);
1632 1866
1633 LOCK;
1634 free_coro_mortal (aTHX); 1867 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1868 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1869}
1638 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
1639INLINE void 1924ECB_INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1925prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1926{
1642 api_ready (aTHX_ coro_current); 1927 api_ready (aTHX_ coro_current);
1643 prepare_schedule (aTHX_ ta); 1928 prepare_schedule (aTHX_ ta);
1644} 1929}
1645 1930
1646INLINE void 1931ECB_INLINE void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1932prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{ 1933{
1649 SV *prev = SvRV (coro_current); 1934 SV *prev = SvRV (coro_current);
1650 1935
1651 if (coro_nready) 1936 if (coro_nready)
… …
1664 1949
1665 prepare_schedule (aTHX_ &ta); 1950 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1951 TRANSFER (ta, 1);
1667} 1952}
1668 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
1669static int 1964static int
1670api_cede (pTHX) 1965api_cede (pTHX)
1671{ 1966{
1672 struct coro_transfer_args ta; 1967 struct coro_transfer_args ta;
1673 1968
1674 prepare_cede (aTHX_ &ta); 1969 prepare_cede (aTHX_ &ta);
1675 1970
1676 if (expect_true (ta.prev != ta.next)) 1971 if (ecb_expect_true (ta.prev != ta.next))
1677 { 1972 {
1678 TRANSFER (ta, 1); 1973 TRANSFER (ta, 1);
1679 return 1; 1974 return 1;
1680 } 1975 }
1681 else 1976 else
… …
1700static void 1995static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1996api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1997{
1703 struct coro *coro = SvSTATE (coro_sv); 1998 struct coro *coro = SvSTATE (coro_sv);
1704 1999
2000 if (coro->flags & CF_RUNNING)
2001 croak ("cannot enable tracing on a running coroutine, caught");
2002
1705 if (flags & CC_TRACE) 2003 if (flags & CC_TRACE)
1706 { 2004 {
1707 if (!coro->cctx) 2005 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 2006 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 2007 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 2008 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 2009
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2010 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 2011 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2012 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 2013 {
… …
1720 else 2018 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 2019 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 2020 }
1723} 2021}
1724 2022
1725#if 0 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
1726static int 2060static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2061slf_check_join (pTHX_ struct CoroSLF *frame)
1728{ 2062{
1729 AV *padlist; 2063 struct coro *coro = (struct coro *)frame->data;
1730 AV *av = (AV *)mg->mg_obj;
1731 2064
1732 abort (); 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);
1733 2073
1734 return 0; 2074 return 0;
1735} 2075}
1736 2076
1737static MGVTBL coro_gensub_vtbl = { 2077static void
1738 0, 0, 0, 0, 2078slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2079{
1740}; 2080 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1741#endif 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;
2457}
2458
2459/*****************************************************************************/
2460/* schedule-like-function opcode (SLF) */
2461
2462static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2463static const CV *slf_cv;
2464static SV **slf_argv;
2465static int slf_argc, slf_arga; /* count, allocated */
2466static I32 slf_ax; /* top of stack, for restore */
2467
2468/* this restores the stack in the case we patched the entersub, to */
2469/* recreate the stack frame as perl will on following calls */
2470/* since entersub cleared the stack */
2471static OP *
2472pp_restore (pTHX)
2473{
2474 int i;
2475 SV **SP = PL_stack_base + slf_ax;
2476
2477 PUSHMARK (SP);
2478
2479 EXTEND (SP, slf_argc + 1);
2480
2481 for (i = 0; i < slf_argc; ++i)
2482 PUSHs (sv_2mortal (slf_argv [i]));
2483
2484 PUSHs ((SV *)CvGV (slf_cv));
2485
2486 RETURNOP (slf_restore.op_first);
2487}
2488
2489static void
2490slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2491{
2492 SV **arg = (SV **)slf_frame.data;
2493
2494 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2495}
2496
2497static void
2498slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2499{
2500 if (items != 2)
2501 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2502
2503 frame->prepare = slf_prepare_transfer;
2504 frame->check = slf_check_nop;
2505 frame->data = (void *)arg; /* let's hope it will stay valid */
2506}
2507
2508static void
2509slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2510{
2511 frame->prepare = prepare_schedule;
2512 frame->check = slf_check_nop;
2513}
2514
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
2544slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2545{
2546 frame->prepare = prepare_cede;
2547 frame->check = slf_check_nop;
2548}
2549
2550static void
2551slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2552{
2553 frame->prepare = prepare_cede_notself;
2554 frame->check = slf_check_nop;
2555}
2556
2557/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
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}
2573
2574/*
2575 * these not obviously related functions are all rolled into one
2576 * function to increase chances that they all will call transfer with the same
2577 * stack offset
2578 * SLF stands for "schedule-like-function".
2579 */
2580static OP *
2581pp_slf (pTHX)
2582{
2583 I32 checkmark; /* mark SP to see how many elements check has pushed */
2584
2585 /* set up the slf frame, unless it has already been set-up */
2586 /* the latter happens when a new coro has been started */
2587 /* or when a new cctx was attached to an existing coroutine */
2588 if (ecb_expect_true (!slf_frame.prepare))
2589 {
2590 /* first iteration */
2591 dSP;
2592 SV **arg = PL_stack_base + TOPMARK + 1;
2593 int items = SP - arg; /* args without function object */
2594 SV *gv = *sp;
2595
2596 /* do a quick consistency check on the "function" object, and if it isn't */
2597 /* for us, divert to the real entersub */
2598 if (SvTYPE (gv) != SVt_PVGV
2599 || !GvCV (gv)
2600 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2601 return PL_ppaddr[OP_ENTERSUB](aTHX);
2602
2603 if (!(PL_op->op_flags & OPf_STACKED))
2604 {
2605 /* ampersand-form of call, use @_ instead of stack */
2606 AV *av = GvAV (PL_defgv);
2607 arg = AvARRAY (av);
2608 items = AvFILLp (av) + 1;
2609 }
2610
2611 /* now call the init function, which needs to set up slf_frame */
2612 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2613 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2614
2615 /* pop args */
2616 SP = PL_stack_base + POPMARK;
2617
2618 PUTBACK;
2619 }
2620
2621 /* now that we have a slf_frame, interpret it! */
2622 /* we use a callback system not to make the code needlessly */
2623 /* complicated, but so we can run multiple perl coros from one cctx */
2624
2625 do
2626 {
2627 struct coro_transfer_args ta;
2628
2629 slf_frame.prepare (aTHX_ &ta);
2630 TRANSFER (ta, 0);
2631
2632 checkmark = PL_stack_sp - PL_stack_base;
2633 }
2634 while (slf_frame.check (aTHX_ &slf_frame));
2635
2636 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2637
2638 /* exception handling */
2639 if (ecb_expect_false (CORO_THROW))
2640 {
2641 SV *exception = sv_2mortal (CORO_THROW);
2642
2643 CORO_THROW = 0;
2644 sv_setsv (ERRSV, exception);
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;
2664 }
2665
2666 return NORMAL;
2667}
2668
2669static void
2670api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2671{
2672 int i;
2673 SV **arg = PL_stack_base + ax;
2674 int items = PL_stack_sp - arg + 1;
2675
2676 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2677
2678 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2679 && PL_op->op_ppaddr != pp_slf)
2680 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2681
2682 CvFLAGS (cv) |= CVf_SLF;
2683 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2684 slf_cv = cv;
2685
2686 /* we patch the op, and then re-run the whole call */
2687 /* we have to put the same argument on the stack for this to work */
2688 /* and this will be done by pp_restore */
2689 slf_restore.op_next = (OP *)&slf_restore;
2690 slf_restore.op_type = OP_CUSTOM;
2691 slf_restore.op_ppaddr = pp_restore;
2692 slf_restore.op_first = PL_op;
2693
2694 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2695
2696 if (PL_op->op_flags & OPf_STACKED)
2697 {
2698 if (items > slf_arga)
2699 {
2700 slf_arga = items;
2701 Safefree (slf_argv);
2702 New (0, slf_argv, slf_arga, SV *);
2703 }
2704
2705 slf_argc = items;
2706
2707 for (i = 0; i < items; ++i)
2708 slf_argv [i] = SvREFCNT_inc (arg [i]);
2709 }
2710 else
2711 slf_argc = 0;
2712
2713 PL_op->op_ppaddr = pp_slf;
2714 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2715
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));
2764}
1742 2765
1743/*****************************************************************************/ 2766/*****************************************************************************/
1744/* PerlIO::cede */ 2767/* PerlIO::cede */
1745 2768
1746typedef struct 2769typedef struct
1747{ 2770{
1748 PerlIOBuf base; 2771 PerlIOBuf base;
1749 NV next, every; 2772 NV next, every;
1750} PerlIOCede; 2773} PerlIOCede;
1751 2774
1752static IV 2775static IV ecb_cold
1753PerlIOCede_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)
1754{ 2777{
1755 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2778 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1756 2779
1757 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2780 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1758 self->next = nvtime () + self->every; 2781 self->next = nvtime () + self->every;
1759 2782
1760 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2783 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1761} 2784}
1762 2785
1763static SV * 2786static SV * ecb_cold
1764PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2787PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1765{ 2788{
1766 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2789 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1767 2790
1768 return newSVnv (self->every); 2791 return newSVnv (self->every);
… …
1814 PerlIOBuf_get_cnt, 2837 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2838 PerlIOBuf_set_ptrcnt,
1816}; 2839};
1817 2840
1818/*****************************************************************************/ 2841/*****************************************************************************/
2842/* Coro::Semaphore & Coro::Signal */
1819 2843
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 2844static SV *
1831pp_restore (pTHX) 2845coro_waitarray_new (pTHX_ int count)
1832{ 2846{
1833 dSP; 2847 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2848 AV *av = newAV ();
2849 SV **ary;
1834 2850
1835 PUSHMARK (SP); 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);
1836 2864
1837 EXTEND (SP, 3); 2865 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 2866}
1845 2867
1846static void 2868/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 2869
1852static void 2870static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2871coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2872{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2873 SV *count_sv = AvARRAY (av)[0];
2874 IV count = SvIVX (count_sv);
1856 2875
1857 frame->prepare = slf_prepare_set_stacklevel; 2876 count += adjust;
1858 frame->check = slf_check_nop; 2877 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2878
1862static void 2879 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2880 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 2881 {
1921 /* first iteration */ 2882 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 2883
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2884 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2885 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2886 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2887 cb = av_shift (av);
1931 2888
1932 /* pop args */ 2889 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2890 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2891 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2892 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2893 }
1942 2894 else if (SvTYPE (cb) == SVt_PVCV)
2895 {
2896 dSP;
2897 PUSHMARK (SP);
2898 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1943 PUTBACK; 2899 PUTBACK;
2900 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2901 }
1944 2902
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items); 2903 SvREFCNT_dec (cb);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 { 2904 }
1954 struct coro_transfer_args ta; 2905}
1955 2906
1956 slf_frame.prepare (aTHX_ &ta); 2907static void
1957 TRANSFER (ta, 0); 2908coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2909{
2910 /* call $sem->adjust (0) to possibly wake up some other waiters */
2911 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2912}
1958 2913
1959 checkmark = PL_stack_sp - PL_stack_base; 2914static int
2915slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2916{
2917 AV *av = (AV *)frame->data;
2918 SV *count_sv = AvARRAY (av)[0];
2919 SV *coro_hv = SvRV (coro_current);
2920
2921 /* if we are about to throw, don't actually acquire the lock, just throw */
2922 if (CORO_THROW)
2923 return 0;
2924 else if (SvIVX (count_sv) > 0)
1960 } 2925 {
1961 while (slf_frame.check (aTHX_ &slf_frame)); 2926 frame->destroy = 0;
1962 2927
2928 if (acquire)
2929 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2930 else
2931 coro_semaphore_adjust (aTHX_ av, 0);
2932
2933 return 0;
2934 }
2935 else
2936 {
2937 int i;
2938 /* if we were woken up but can't down, we look through the whole */
2939 /* waiters list and only add us if we aren't in there already */
2940 /* this avoids some degenerate memory usage cases */
2941 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2942 if (AvARRAY (av)[i] == coro_hv)
2943 return 1;
2944
2945 av_push (av, SvREFCNT_inc (coro_hv));
2946 return 1;
2947 }
2948}
2949
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
2963slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2964{
2965 AV *av = (AV *)SvRV (arg [0]);
2966
2967 if (SvIVX (AvARRAY (av)[0]) > 0)
2968 {
2969 frame->data = (void *)av;
2970 frame->prepare = prepare_nop;
2971 }
2972 else
2973 {
2974 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2975
2976 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2977 frame->prepare = prepare_schedule;
2978 /* to avoid race conditions when a woken-up coro gets terminated */
2979 /* we arrange for a temporary on_destroy that calls adjust (0) */
2980 frame->destroy = coro_semaphore_destroy;
2981 }
2982}
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);
2988 frame->check = slf_check_semaphore_down;
2989}
2990
2991static void
2992slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2993{
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]);
2999
3000 av_push (av, SvREFCNT_inc_NN (cb_cv));
3001
3002 if (SvIVX (AvARRAY (av)[0]) > 0)
3003 coro_semaphore_adjust (aTHX_ av, 0);
3004
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 }
3093}
3094
3095/*****************************************************************************/
3096/* Coro::AIO */
3097
3098#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3099
3100/* helper storage struct */
3101struct io_state
3102{
3103 int errorno;
3104 I32 laststype; /* U16 in 5.10.0 */
3105 int laststatval;
3106 Stat_t statcache;
3107};
3108
3109static void
3110coro_aio_callback (pTHX_ CV *cv)
3111{
3112 dXSARGS;
3113 AV *state = (AV *)S_GENSUB_ARG;
3114 SV *coro = av_pop (state);
3115 SV *data_sv = newSV (sizeof (struct io_state));
3116
3117 av_extend (state, items - 1);
3118
3119 sv_upgrade (data_sv, SVt_PV);
3120 SvCUR_set (data_sv, sizeof (struct io_state));
3121 SvPOK_only (data_sv);
3122
3123 {
3124 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3125
3126 data->errorno = errno;
3127 data->laststype = PL_laststype;
3128 data->laststatval = PL_laststatval;
3129 data->statcache = PL_statcache;
3130 }
3131
3132 /* now build the result vector out of all the parameters and the data_sv */
3133 {
3134 int i;
3135
3136 for (i = 0; i < items; ++i)
3137 av_push (state, SvREFCNT_inc_NN (ST (i)));
3138 }
3139
3140 av_push (state, data_sv);
3141
3142 api_ready (aTHX_ coro);
3143 SvREFCNT_dec (coro);
3144 SvREFCNT_dec ((AV *)state);
3145}
3146
3147static int
3148slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3149{
3150 AV *state = (AV *)frame->data;
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
3158 /* one element that is an RV? repeat! */
3159 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3160 return 1;
3161
3162 /* restore status */
3163 {
3164 SV *data_sv = av_pop (state);
3165 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3166
3167 errno = data->errorno;
3168 PL_laststype = data->laststype;
3169 PL_laststatval = data->laststatval;
3170 PL_statcache = data->statcache;
3171
3172 SvREFCNT_dec (data_sv);
3173 }
3174
3175 /* push result values */
1963 { 3176 {
1964 dSP; 3177 dSP;
1965 SV **bot = PL_stack_base + checkmark; 3178 int i;
1966 int gimme = GIMME_V;
1967 3179
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 3180 EXTEND (SP, AvFILLp (state) + 1);
1969 3181 for (i = 0; i <= AvFILLp (state); ++i)
1970 /* make sure we put something on the stack in scalar context */ 3182 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1971 if (gimme == G_SCALAR)
1972 {
1973 if (sp == bot)
1974 XPUSHs (&PL_sv_undef);
1975
1976 SP = bot + 1;
1977 }
1978 3183
1979 PUTBACK; 3184 PUTBACK;
1980 } 3185 }
1981 3186
1982 return NORMAL; 3187 return 0;
1983} 3188}
1984 3189
1985static void 3190static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 3191slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1987{ 3192{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 3193 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3194 SV *coro_hv = SvRV (coro_current);
3195 struct coro *coro = SvSTATE_hv (coro_hv);
1989 3196
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] 3197 /* put our coroutine id on the state arg */
1991 && PL_op->op_ppaddr != pp_slf) 3198 av_push (state, SvREFCNT_inc_NN (coro_hv));
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or other means, caught");
1993 3199
1994 if (items > 3) 3200 /* first see whether we have a non-zero priority and set it as AIO prio */
1995 croak ("Coro only supports up to three arguments to SLF functions currently, caught"); 3201 if (coro->prio)
3202 {
3203 dSP;
1996 3204
1997 CvFLAGS (cv) |= CVf_SLF; 3205 static SV *prio_cv;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb; 3206 static SV *prio_sv;
1999 slf_cv = cv;
2000 3207
2001 /* we patch the op, and then re-run the whole call */ 3208 if (ecb_expect_false (!prio_cv))
2002 /* we have to put the same argument on the stack for this to work */ 3209 {
2003 /* and this will be done by pp_restore */ 3210 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2004 slf_restore.op_next = (OP *)&slf_restore; 3211 prio_sv = newSViv (0);
2005 slf_restore.op_type = OP_NULL; 3212 }
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008 3213
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 3214 PUSHMARK (SP);
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 3215 sv_setiv (prio_sv, coro->prio);
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0; 3216 XPUSHs (prio_sv);
2012 3217
2013 PL_op->op_ppaddr = pp_slf; 3218 PUTBACK;
3219 call_sv (prio_cv, G_VOID | G_DISCARD);
3220 }
2014 3221
2015 PL_op = (OP *)&slf_restore; 3222 /* now call the original request */
3223 {
3224 dSP;
3225 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3226 int i;
3227
3228 PUSHMARK (SP);
3229
3230 /* first push all args to the stack */
3231 EXTEND (SP, items + 1);
3232
3233 for (i = 0; i < items; ++i)
3234 PUSHs (arg [i]);
3235
3236 /* now push the callback closure */
3237 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3238
3239 /* now call the AIO function - we assume our request is uncancelable */
3240 PUTBACK;
3241 call_sv ((SV *)req, G_VOID | G_DISCARD);
3242 }
3243
3244 /* now that the request is going, we loop till we have a result */
3245 frame->data = (void *)state;
3246 frame->prepare = prepare_schedule;
3247 frame->check = slf_check_aio_req;
2016} 3248}
3249
3250static void
3251coro_aio_req_xs (pTHX_ CV *cv)
3252{
3253 dXSARGS;
3254
3255 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3256
3257 XSRETURN_EMPTY;
3258}
3259
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
2017 3327
2018MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3328MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2019 3329
2020PROTOTYPES: DISABLE 3330PROTOTYPES: DISABLE
2021 3331
2022BOOT: 3332BOOT:
2023{ 3333{
2024#ifdef USE_ITHREADS 3334#ifdef USE_ITHREADS
2025 MUTEX_INIT (&coro_lock);
2026# if CORO_PTHREAD 3335# if CORO_PTHREAD
2027 coro_thx = PERL_GET_CONTEXT; 3336 coro_thx = PERL_GET_CONTEXT;
2028# endif 3337# endif
2029#endif 3338#endif
2030 BOOT_PAGESIZE; 3339 BOOT_PAGESIZE;
2031 3340
3341 cctx_current = cctx_new_empty ();
3342
2032 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3343 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2033 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3344 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2034 3345
2035 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;
2036 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;
… …
2050 main_mainstack = PL_mainstack; 3361 main_mainstack = PL_mainstack;
2051 main_top_env = PL_top_env; 3362 main_top_env = PL_top_env;
2052 3363
2053 while (main_top_env->je_prev) 3364 while (main_top_env->je_prev)
2054 main_top_env = main_top_env->je_prev; 3365 main_top_env = main_top_env->je_prev;
3366
3367 {
3368 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3369
3370 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3371 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3372
3373 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3374 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3375 }
2055 3376
2056 coroapi.ver = CORO_API_VERSION; 3377 coroapi.ver = CORO_API_VERSION;
2057 coroapi.rev = CORO_API_REVISION; 3378 coroapi.rev = CORO_API_REVISION;
2058 3379
2059 coroapi.transfer = api_transfer; 3380 coroapi.transfer = api_transfer;
… …
2063 coroapi.prepare_nop = prepare_nop; 3384 coroapi.prepare_nop = prepare_nop;
2064 coroapi.prepare_schedule = prepare_schedule; 3385 coroapi.prepare_schedule = prepare_schedule;
2065 coroapi.prepare_cede = prepare_cede; 3386 coroapi.prepare_cede = prepare_cede;
2066 coroapi.prepare_cede_notself = prepare_cede_notself; 3387 coroapi.prepare_cede_notself = prepare_cede_notself;
2067 3388
2068 { 3389 time_init (aTHX);
2069 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2070 3390
2071 if (!svp) croak ("Time::HiRes is required");
2072 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2073
2074 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2075 }
2076
2077 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3391 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2078} 3392}
2079 3393
2080SV * 3394SV *
2081new (char *klass, ...) 3395new (SV *klass, ...)
3396 ALIAS:
3397 Coro::new = 1
2082 CODE: 3398 CODE:
2083{ 3399 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2084 struct coro *coro; 3400 OUTPUT:
2085 MAGIC *mg;
2086 HV *hv;
2087 int i;
2088
2089 Newz (0, coro, 1, struct coro);
2090 coro->args = newAV ();
2091 coro->flags = CF_NEW;
2092
2093 if (coro_first) coro_first->prev = coro;
2094 coro->next = coro_first;
2095 coro_first = coro;
2096
2097 coro->hv = hv = newHV ();
2098 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2099 mg->mg_flags |= MGf_DUP;
2100 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2101
2102 av_extend (coro->args, items - 1);
2103 for (i = 1; i < items; i++)
2104 av_push (coro->args, newSVsv (ST (i)));
2105}
2106 OUTPUT:
2107 RETVAL 3401 RETVAL
2108
2109void
2110_set_stacklevel (...)
2111 CODE:
2112 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2113 3402
2114void 3403void
2115transfer (...) 3404transfer (...)
3405 PROTOTYPE: $$
2116 CODE: 3406 CODE:
2117 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3407 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2118
2119bool
2120_destroy (SV *coro_sv)
2121 CODE:
2122 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2123 OUTPUT:
2124 RETVAL
2125 3408
2126void 3409void
2127_exit (int code) 3410_exit (int code)
2128 PROTOTYPE: $ 3411 PROTOTYPE: $
2129 CODE: 3412 CODE:
2130 _exit (code); 3413 _exit (code);
2131 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
3433
2132int 3434int
2133cctx_stacksize (int new_stacksize = 0) 3435cctx_stacksize (int new_stacksize = 0)
3436 PROTOTYPE: ;$
2134 CODE: 3437 CODE:
2135 RETVAL = cctx_stacksize; 3438 RETVAL = cctx_stacksize;
2136 if (new_stacksize) 3439 if (new_stacksize)
2137 { 3440 {
2138 cctx_stacksize = new_stacksize; 3441 cctx_stacksize = new_stacksize;
… …
2141 OUTPUT: 3444 OUTPUT:
2142 RETVAL 3445 RETVAL
2143 3446
2144int 3447int
2145cctx_max_idle (int max_idle = 0) 3448cctx_max_idle (int max_idle = 0)
3449 PROTOTYPE: ;$
2146 CODE: 3450 CODE:
2147 RETVAL = cctx_max_idle; 3451 RETVAL = cctx_max_idle;
2148 if (max_idle > 1) 3452 if (max_idle > 1)
2149 cctx_max_idle = max_idle; 3453 cctx_max_idle = max_idle;
2150 OUTPUT: 3454 OUTPUT:
2151 RETVAL 3455 RETVAL
2152 3456
2153int 3457int
2154cctx_count () 3458cctx_count ()
3459 PROTOTYPE:
2155 CODE: 3460 CODE:
2156 RETVAL = cctx_count; 3461 RETVAL = cctx_count;
2157 OUTPUT: 3462 OUTPUT:
2158 RETVAL 3463 RETVAL
2159 3464
2160int 3465int
2161cctx_idle () 3466cctx_idle ()
3467 PROTOTYPE:
2162 CODE: 3468 CODE:
2163 RETVAL = cctx_idle; 3469 RETVAL = cctx_idle;
2164 OUTPUT: 3470 OUTPUT:
2165 RETVAL 3471 RETVAL
2166 3472
2167void 3473void
2168list () 3474list ()
3475 PROTOTYPE:
2169 PPCODE: 3476 PPCODE:
2170{ 3477{
2171 struct coro *coro; 3478 struct coro *coro;
2172 for (coro = coro_first; coro; coro = coro->next) 3479 for (coro = coro_first; coro; coro = coro->next)
2173 if (coro->hv) 3480 if (coro->hv)
… …
2180 eval = 1 3487 eval = 1
2181 CODE: 3488 CODE:
2182{ 3489{
2183 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3490 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2184 { 3491 {
2185 struct coro temp; 3492 struct coro *current = SvSTATE_current;
3493 struct CoroSLF slf_save;
2186 3494
2187 if (!(coro->flags & CF_RUNNING)) 3495 if (current != coro)
2188 { 3496 {
2189 PUTBACK; 3497 PUTBACK;
2190 save_perl (aTHX_ &temp); 3498 save_perl (aTHX_ current);
2191 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;
2192 } 3510 }
2193 3511
2194 {
2195 dSP;
2196 ENTER;
2197 SAVETMPS;
2198 PUTBACK;
2199 PUSHSTACK; 3512 PUSHSTACK;
3513
2200 PUSHMARK (SP); 3514 PUSHMARK (SP);
3515 PUTBACK;
2201 3516
2202 if (ix) 3517 if (ix)
2203 eval_sv (coderef, 0); 3518 eval_sv (coderef, 0);
2204 else 3519 else
2205 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3520 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2206 3521
2207 POPSTACK; 3522 POPSTACK;
2208 SPAGAIN; 3523 SPAGAIN;
2209 FREETMPS;
2210 LEAVE;
2211 PUTBACK;
2212 }
2213 3524
2214 if (!(coro->flags & CF_RUNNING)) 3525 if (current != coro)
2215 { 3526 {
3527 PUTBACK;
3528 slf_frame = slf_save;
2216 save_perl (aTHX_ coro); 3529 save_perl (aTHX_ coro);
2217 load_perl (aTHX_ &temp); 3530 load_perl (aTHX_ current);
2218 SPAGAIN; 3531 SPAGAIN;
2219 } 3532 }
2220 } 3533 }
2221} 3534}
2222 3535
… …
2225 PROTOTYPE: $ 3538 PROTOTYPE: $
2226 ALIAS: 3539 ALIAS:
2227 is_ready = CF_READY 3540 is_ready = CF_READY
2228 is_running = CF_RUNNING 3541 is_running = CF_RUNNING
2229 is_new = CF_NEW 3542 is_new = CF_NEW
2230 is_destroyed = CF_DESTROYED 3543 is_destroyed = CF_ZOMBIE
3544 is_zombie = CF_ZOMBIE
3545 is_suspended = CF_SUSPENDED
2231 CODE: 3546 CODE:
2232 RETVAL = boolSV (coro->flags & ix); 3547 RETVAL = boolSV (coro->flags & ix);
2233 OUTPUT: 3548 OUTPUT:
2234 RETVAL 3549 RETVAL
2235 3550
2236void 3551void
2237throw (Coro::State self, SV *throw = &PL_sv_undef) 3552throw (Coro::State self, SV *exception = &PL_sv_undef)
2238 PROTOTYPE: $;$ 3553 PROTOTYPE: $;$
2239 CODE: 3554 CODE:
3555{
3556 struct coro *current = SvSTATE_current;
3557 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2240 SvREFCNT_dec (self->throw); 3558 SvREFCNT_dec (*exceptionp);
2241 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3559 SvGETMAGIC (exception);
3560 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3561}
2242 3562
2243void 3563void
2244api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3564api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3565 PROTOTYPE: $;$
2245 C_ARGS: aTHX_ coro, flags 3566 C_ARGS: aTHX_ coro, flags
2246 3567
2247SV * 3568SV *
2248has_cctx (Coro::State coro) 3569has_cctx (Coro::State coro)
2249 PROTOTYPE: $ 3570 PROTOTYPE: $
2250 CODE: 3571 CODE:
2251 RETVAL = boolSV (!!coro->cctx); 3572 /* maybe manage the running flag differently */
3573 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2252 OUTPUT: 3574 OUTPUT:
2253 RETVAL 3575 RETVAL
2254 3576
2255int 3577int
2256is_traced (Coro::State coro) 3578is_traced (Coro::State coro)
… …
2274 OUTPUT: 3596 OUTPUT:
2275 RETVAL 3597 RETVAL
2276 3598
2277void 3599void
2278force_cctx () 3600force_cctx ()
3601 PROTOTYPE:
2279 CODE: 3602 CODE:
2280 struct coro *coro = SvSTATE (coro_current);
2281 coro->cctx->idle_sp = 0; 3603 cctx_current->idle_sp = 0;
2282 3604
2283void 3605void
2284swap_defsv (Coro::State self) 3606swap_defsv (Coro::State self)
2285 PROTOTYPE: $ 3607 PROTOTYPE: $
2286 ALIAS: 3608 ALIAS:
… …
2294 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3616 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2295 3617
2296 SV *tmp = *src; *src = *dst; *dst = tmp; 3618 SV *tmp = *src; *src = *dst; *dst = tmp;
2297 } 3619 }
2298 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
3682
2299MODULE = Coro::State PACKAGE = Coro 3683MODULE = Coro::State PACKAGE = Coro
2300 3684
2301BOOT: 3685BOOT:
2302{ 3686{
2303 int i;
2304
2305 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2306 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3687 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2307 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3688 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2308 3689 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2309 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3690 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2310 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);
2311 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
2312 coro_stash = gv_stashpv ("Coro", TRUE); 3701 coro_stash = gv_stashpv ("Coro", TRUE);
2313 3702
2314 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3703 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2315 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3704 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2316 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3705 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2317 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3706 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2318 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3707 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2319 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3708 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2320
2321 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2322 coro_ready[i] = newAV ();
2323 3709
2324 { 3710 {
2325 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3711 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2326 3712
2327 coroapi.schedule = api_schedule; 3713 coroapi.schedule = api_schedule;
3714 coroapi.schedule_to = api_schedule_to;
2328 coroapi.cede = api_cede; 3715 coroapi.cede = api_cede;
2329 coroapi.cede_notself = api_cede_notself; 3716 coroapi.cede_notself = api_cede_notself;
2330 coroapi.ready = api_ready; 3717 coroapi.ready = api_ready;
2331 coroapi.is_ready = api_is_ready; 3718 coroapi.is_ready = api_is_ready;
2332 coroapi.nready = coro_nready; 3719 coroapi.nready = coro_nready;
2333 coroapi.current = coro_current; 3720 coroapi.current = coro_current;
2334 3721
2335 GCoroAPI = &coroapi; 3722 /*GCoroAPI = &coroapi;*/
2336 sv_setiv (sv, (IV)&coroapi); 3723 sv_setiv (sv, (IV)&coroapi);
2337 SvREADONLY_on (sv); 3724 SvREADONLY_on (sv);
2338 } 3725 }
2339} 3726}
2340 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
3766
2341void 3767void
2342schedule (...) 3768schedule (...)
2343 CODE: 3769 CODE:
2344 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 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);
2345 3781
2346void 3782void
2347cede (...) 3783cede (...)
2348 CODE: 3784 CODE:
2349 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 3785 CORO_EXECUTE_SLF_XS (slf_init_cede);
2350 3786
2351void 3787void
2352cede_notself (...) 3788cede_notself (...)
2353 CODE: 3789 CODE:
2354 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 3790 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2355 3791
2356void 3792void
2357_set_current (SV *current) 3793_set_current (SV *current)
2358 PROTOTYPE: $ 3794 PROTOTYPE: $
2359 CODE: 3795 CODE:
… …
2362 3798
2363void 3799void
2364_set_readyhook (SV *hook) 3800_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3801 PROTOTYPE: $
2366 CODE: 3802 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3803 SvREFCNT_dec (coro_readyhook);
3804 SvGETMAGIC (hook);
3805 if (SvOK (hook))
3806 {
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3807 coro_readyhook = newSVsv (hook);
2370 UNLOCK; 3808 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3809 }
3810 else
3811 {
3812 coro_readyhook = 0;
3813 CORO_READYHOOK = 0;
3814 }
2371 3815
2372int 3816int
2373prio (Coro::State coro, int newprio = 0) 3817prio (Coro::State coro, int newprio = 0)
3818 PROTOTYPE: $;$
2374 ALIAS: 3819 ALIAS:
2375 nice = 1 3820 nice = 1
2376 CODE: 3821 CODE:
2377{ 3822{
2378 RETVAL = coro->prio; 3823 RETVAL = coro->prio;
… …
2380 if (items > 1) 3825 if (items > 1)
2381 { 3826 {
2382 if (ix) 3827 if (ix)
2383 newprio = coro->prio - newprio; 3828 newprio = coro->prio - newprio;
2384 3829
2385 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3830 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2386 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3831 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2387 3832
2388 coro->prio = newprio; 3833 coro->prio = newprio;
2389 } 3834 }
2390} 3835}
2391 OUTPUT: 3836 OUTPUT:
… …
2405 CODE: 3850 CODE:
2406 RETVAL = coro_nready; 3851 RETVAL = coro_nready;
2407 OUTPUT: 3852 OUTPUT:
2408 RETVAL 3853 RETVAL
2409 3854
2410# for async_pool speedup
2411void 3855void
2412_pool_1 (SV *cb) 3856suspend (Coro::State self)
3857 PROTOTYPE: $
2413 CODE: 3858 CODE:
2414{ 3859 self->flags |= CF_SUSPENDED;
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3860
2422 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)
2423 { 3887 {
2424 SV *old = PL_diehook; 3888 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2425 PL_diehook = 0; 3889 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2426 SvREFCNT_dec (old); 3890 SvREFCNT_dec (sv);
2427 croak ("\3async_pool terminate\2\n");
2428 } 3891 }
2429 3892
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3893 {
2443 av_fill (defav, len - 1); 3894 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3895
2445 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;
2446 } 3900 }
2447 3901
3902 api_ready (aTHX_ (SV *)hv);
3903
3904 if (GIMME_V != G_VOID)
3905 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3906 else
2448 SvREFCNT_dec (invoke); 3907 SvREFCNT_dec (hv);
2449} 3908}
2450 3909
2451void 3910SV *
2452_pool_2 (SV *cb) 3911rouse_cb ()
3912 PROTOTYPE:
2453 CODE: 3913 CODE:
2454{ 3914 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3915 OUTPUT:
2527 RETVAL 3916 RETVAL
2528 3917
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3918void
2535_get_state (SV *self) 3919rouse_wait (...)
3920 PROTOTYPE: ;$
2536 PPCODE: 3921 PPCODE:
2537{ 3922 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550
2551 av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553 for (i = 0; i <= AvFILLp (defav); ++i)
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556 av_push (av, data_sv);
2557
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560 api_ready (aTHX_ self);
2561}
2562 3923
2563void 3924void
2564_set_state (SV *state) 3925on_enter (SV *block)
3926 ALIAS:
3927 on_leave = 1
2565 PROTOTYPE: $ 3928 PROTOTYPE: &
3929 CODE:
3930{
3931 struct coro *coro = SvSTATE_current;
3932 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3933
3934 block = s_get_cv_croak (block);
3935
3936 if (!*avp)
3937 *avp = newAV ();
3938
3939 av_push (*avp, SvREFCNT_inc (block));
3940
3941 if (!ix)
3942 on_enterleave_call (aTHX_ block);
3943
3944 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3945 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3946 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3947}
3948
3949
3950MODULE = Coro::State PACKAGE = PerlIO::cede
3951
3952BOOT:
3953 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3954
3955
3956MODULE = Coro::State PACKAGE = Coro::Semaphore
3957
3958SV *
3959new (SV *klass, SV *count = 0)
3960 CODE:
3961{
3962 int semcnt = 1;
3963
3964 if (count)
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 );
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);
3985 OUTPUT:
3986 RETVAL
3987
3988SV *
3989count (SV *self)
3990 CODE:
3991 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3992 OUTPUT:
3993 RETVAL
3994
3995void
3996up (SV *self, int adjust = 1)
3997 ALIAS:
3998 adjust = 1
3999 CODE:
4000 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4001
4002void
4003down (...)
4004 CODE:
4005 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4006
4007void
4008wait (...)
4009 CODE:
4010 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4011
4012void
4013try (SV *self)
4014 PPCODE:
4015{
4016 AV *av = (AV *)SvRV (self);
4017 SV *count_sv = AvARRAY (av)[0];
4018 IV count = SvIVX (count_sv);
4019
4020 if (count > 0)
4021 {
4022 --count;
4023 SvIVX (count_sv) = count;
4024 XSRETURN_YES;
4025 }
4026 else
4027 XSRETURN_NO;
4028}
4029
4030void
4031waiters (SV *self)
4032 PPCODE:
4033{
4034 AV *av = (AV *)SvRV (self);
4035 int wcount = AvFILLp (av) + 1 - 1;
4036
4037 if (GIMME_V == G_SCALAR)
4038 XPUSHs (sv_2mortal (newSViv (wcount)));
4039 else
4040 {
4041 int i;
4042 EXTEND (SP, wcount);
4043 for (i = 1; i <= wcount; ++i)
4044 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4045 }
4046}
4047
4048MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4049
4050void
4051_may_delete (SV *sem, int count, int extra_refs)
2566 PPCODE: 4052 PPCODE:
2567{ 4053{
2568 AV *av = (AV *)SvRV (state); 4054 AV *av = (AV *)SvRV (sem);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2570 int i;
2571 4055
2572 errno = data->errorno; 4056 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2573 PL_laststype = data->laststype; 4057 && AvFILLp (av) == 0 /* no waiters, just count */
2574 PL_laststatval = data->laststatval; 4058 && SvIV (AvARRAY (av)[0]) == count)
2575 PL_statcache = data->statcache; 4059 XSRETURN_YES;
2576 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
2577 EXTEND (SP, AvFILLp (av)); 4095 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 4096 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 4097 else
4098 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 4099}
4100
4101IV
4102awaited (SV *self)
4103 CODE:
4104 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4105 OUTPUT:
4106 RETVAL
2581 4107
2582 4108
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 4109MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 4110
2585BOOT: 4111BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 4112 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 4113
2588SV * 4114void
2589_schedule (...) 4115_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 4116 CODE:
2592{ 4117{
2593 static int incede; 4118 static int incede;
2594 4119
2595 api_cede_notself (aTHX); 4120 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 4126 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 4127 if (coro_nready >= incede)
2603 { 4128 {
2604 PUSHMARK (SP); 4129 PUSHMARK (SP);
2605 PUTBACK; 4130 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4131 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 4132 }
2609 4133
2610 --incede; 4134 --incede;
2611} 4135}
2612 4136
2613 4137
2614MODULE = Coro::State PACKAGE = PerlIO::cede 4138MODULE = Coro::State PACKAGE = Coro::AIO
2615 4139
2616BOOT: 4140void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4141_register (char *target, char *proto, SV *req)
4142 CODE:
4143{
4144 SV *req_cv = s_get_cv_croak (req);
4145 /* newXSproto doesn't return the CV on 5.8 */
4146 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4147 sv_setpv ((SV *)slf_cv, proto);
4148 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4149}
2618 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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