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Comparing Coro/Coro/State.xs (file contents):
Revision 1.285 by root, Mon Nov 17 04:17:20 2008 UTC vs.
Revision 1.405 by root, Sat Jun 11 13:01:26 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#ifdef HAVE_MMAP
… …
51#endif 63#endif
52 64
53/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 66static int cctx_max_idle = 4;
55 67
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 69# undef CORO_STACKGUARD
108#endif 70#endif
109 71
110#ifndef CORO_STACKGUARD 72#ifndef CORO_STACKGUARD
… …
117#endif 79#endif
118 80
119/* The next macros try to return the current stack pointer, in an as 81/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 82 * portable way as possible. */
121#if __GNUC__ >= 4 83#if __GNUC__ >= 4
84# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 85# define STACKLEVEL __builtin_frame_address (0)
123#else 86#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 87# define dSTACKLEVEL volatile void *stacklevel
88# define STACKLEVEL ((void *)&stacklevel)
125#endif 89#endif
126 90
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 91#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 92
144#include "CoroAPI.h" 93#include "CoroAPI.h"
94#define GCoroAPI (&coroapi) /* very sneaky */
145 95
146#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
147# if CORO_PTHREAD 97# if CORO_PTHREAD
148static void *coro_thx; 98static void *coro_thx;
149# endif 99# endif
150#endif 100#endif
151 101
152/* helper storage struct for Coro::AIO */ 102/* used in state.h */
153struct io_state 103#define VAR(name,type) VARx(name, PL_ ## name, type)
154{ 104
155 AV *res; 105#ifdef __linux
156 int errorno; 106# include <time.h> /* for timespec */
157 I32 laststype; /* U16 in 5.10.0 */ 107# include <syscall.h> /* for SYS_* */
158 int laststatval; 108# ifdef SYS_clock_gettime
159 Stat_t statcache; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
160}; 110# define CORO_CLOCK_MONOTONIC 1
111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
112# endif
113#endif
161 114
162static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
121static void slf_destroy (pTHX_ struct coro *coro);
163 122
164static U32 cctx_gen; 123static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 124static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 125static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 126static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 127static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 128static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 129static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 130
131static AV *av_destroy; /* destruction queue */
132static SV *sv_manager; /* the manager coro */
133static SV *sv_idle; /* $Coro::idle */
134
172static GV *irsgv; /* $/ */ 135static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 136static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 137static SV *rv_diehook;
175static SV *rv_warnhook; 138static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 139static HV *hv_sig; /* %SIG */
177 140
178/* async_pool helper stuff */ 141/* async_pool helper stuff */
179static SV *sv_pool_rss; 142static SV *sv_pool_rss;
180static SV *sv_pool_size; 143static SV *sv_pool_size;
144static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 145static AV *av_async_pool; /* idle pool */
146static SV *sv_Coro; /* class string */
147static CV *cv_pool_handler;
182 148
183/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
184static SV *sv_activity; 150static SV *sv_activity;
185 151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
157
186static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
188 160
189enum { 161enum
162{
190 CC_MAPPED = 0x01, 163 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 164 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 165 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 166 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 167 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
215 int valgrind_id; 188 int valgrind_id;
216#endif 189#endif
217 unsigned char flags; 190 unsigned char flags;
218} coro_cctx; 191} coro_cctx;
219 192
193static coro_cctx *cctx_current; /* the currently running cctx */
194
195/*****************************************************************************/
196
197static MGVTBL coro_state_vtbl;
198
220enum { 199enum
200{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 204 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
205 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
206 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 207};
226 208
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 210typedef struct
229{ 211{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 212#define VARx(name,expr,type) type name;
235# include "state.h" 213# include "state.h"
236#undef VAR 214#undef VARx
237} perl_slots; 215} perl_slots;
238 216
217// how many context stack entries do we need for perl_slots
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 219
241/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
242struct coro { 221struct coro
222{
243 /* the C coroutine allocated to this perl coroutine, if any */ 223 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 224 coro_cctx *cctx;
225
226 /* ready queue */
227 struct coro *next_ready;
245 228
246 /* state data */ 229 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 230 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 231 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 232 perl_slots *slot; /* basically the saved sp */
250 233
234 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 235 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 236 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 237 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 238
257 /* statistics */ 239 /* statistics */
258 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
259 241
260 /* coro process data */ 242 /* coro process data */
261 int prio; 243 int prio;
262 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb; /* last rouse callback */
246 AV *on_destroy; /* callbacks or coros to notify on destroy */
247 AV *status; /* the exit status list */
263 248
264 /* async_pool */ 249 /* async_pool */
265 SV *saved_deffh; 250 SV *saved_deffh;
251 SV *invoke_cb;
252 AV *invoke_av;
253
254 /* on_enter/on_leave */
255 AV *on_enter;
256 AV *on_leave;
257
258 /* swap_sv */
259 AV *swap_sv;
260
261 /* times */
262 coro_ts t_cpu, t_real;
266 263
267 /* linked list */ 264 /* linked list */
268 struct coro *next, *prev; 265 struct coro *next, *prev;
269}; 266};
270 267
271typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
273 270
274/* the following variables are effectively part of the perl context */ 271/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 272/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 273/* the main reason we don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 274static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 275
280/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
281 277
282#define PRIO_MAX 3 278#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 279#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 280#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 281#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 282#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 283#define CORO_PRIO_MIN -4
288 284
289/* for Coro.pm */ 285/* for Coro.pm */
290static SV *coro_current; 286static SV *coro_current;
291static SV *coro_readyhook; 287static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 288static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
289static CV *cv_coro_run;
293static struct coro *coro_first; 290static struct coro *coro_first;
294#define coro_nready coroapi.nready 291#define coro_nready coroapi.nready
295 292
293/** JIT *********************************************************************/
294
295#if CORO_JIT
296 #ifndef CORO_JIT_TYPE
297 #if __linux && __amd64
298 #define CORO_JIT_TYPE "amd64-unix"
299 typedef void (*load_save_perl_slots_type)(perl_slots *);
300 #else
301 #undef CORO_JIT
302 #endif
303 #endif
304#endif
305
306#if CORO_JIT
307
308static load_save_perl_slots_type load_perl_slots, save_perl_slots;
309
310#endif
311
312/** Coro::Select ************************************************************/
313
314static OP *(*coro_old_pp_sselect) (pTHX);
315static SV *coro_select_select;
316
317/* horrible hack, but if it works... */
318static OP *
319coro_pp_sselect (pTHX)
320{
321 dSP;
322 PUSHMARK (SP - 4); /* fake argument list */
323 XPUSHs (coro_select_select);
324 PUTBACK;
325
326 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
327 PL_op->op_flags |= OPf_STACKED;
328 PL_op->op_private = 0;
329 return PL_ppaddr [OP_ENTERSUB](aTHX);
330}
331
332/** time stuff **************************************************************/
333
334#ifdef HAS_GETTIMEOFDAY
335
336ECB_INLINE void
337coro_u2time (pTHX_ UV ret[2])
338{
339 struct timeval tv;
340 gettimeofday (&tv, 0);
341
342 ret [0] = tv.tv_sec;
343 ret [1] = tv.tv_usec;
344}
345
346ECB_INLINE double
347coro_nvtime ()
348{
349 struct timeval tv;
350 gettimeofday (&tv, 0);
351
352 return tv.tv_sec + tv.tv_usec * 1e-6;
353}
354
355ECB_INLINE void
356time_init (pTHX)
357{
358 nvtime = coro_nvtime;
359 u2time = coro_u2time;
360}
361
362#else
363
364ECB_INLINE void
365time_init (pTHX)
366{
367 SV **svp;
368
369 require_pv ("Time/HiRes.pm");
370
371 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
372
373 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
374 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
375
376 nvtime = INT2PTR (double (*)(), SvIV (*svp));
377
378 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
379 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
380}
381
382#endif
383
296/** lowlevel stuff **********************************************************/ 384/** lowlevel stuff **********************************************************/
297 385
298static SV * 386static SV * ecb_noinline
299coro_get_sv (pTHX_ const char *name, int create) 387coro_get_sv (pTHX_ const char *name, int create)
300{ 388{
301#if PERL_VERSION_ATLEAST (5,10,0) 389#if PERL_VERSION_ATLEAST (5,10,0)
302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 390 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
303 get_sv (name, create); 391 get_sv (name, create);
304#endif 392#endif
305 return get_sv (name, create); 393 return get_sv (name, create);
306} 394}
307 395
308static AV * 396static AV * ecb_noinline
309coro_get_av (pTHX_ const char *name, int create) 397coro_get_av (pTHX_ const char *name, int create)
310{ 398{
311#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 400 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_av (name, create); 401 get_av (name, create);
314#endif 402#endif
315 return get_av (name, create); 403 return get_av (name, create);
316} 404}
317 405
318static HV * 406static HV * ecb_noinline
319coro_get_hv (pTHX_ const char *name, int create) 407coro_get_hv (pTHX_ const char *name, int create)
320{ 408{
321#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 410 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
323 get_hv (name, create); 411 get_hv (name, create);
324#endif 412#endif
325 return get_hv (name, create); 413 return get_hv (name, create);
326} 414}
327 415
328static AV * 416ECB_INLINE void
417coro_times_update ()
418{
419#ifdef coro_clock_gettime
420 struct timespec ts;
421
422 ts.tv_sec = ts.tv_nsec = 0;
423 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
424 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
425
426 ts.tv_sec = ts.tv_nsec = 0;
427 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
428 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
429#else
430 dTHX;
431 UV tv[2];
432
433 u2time (aTHX_ tv);
434 time_real [0] = tv [0];
435 time_real [1] = tv [1] * 1000;
436#endif
437}
438
439ECB_INLINE void
440coro_times_add (struct coro *c)
441{
442 c->t_real [1] += time_real [1];
443 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
444 c->t_real [0] += time_real [0];
445
446 c->t_cpu [1] += time_cpu [1];
447 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
448 c->t_cpu [0] += time_cpu [0];
449}
450
451ECB_INLINE void
452coro_times_sub (struct coro *c)
453{
454 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
455 c->t_real [1] -= time_real [1];
456 c->t_real [0] -= time_real [0];
457
458 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
459 c->t_cpu [1] -= time_cpu [1];
460 c->t_cpu [0] -= time_cpu [0];
461}
462
463/*****************************************************************************/
464/* magic glue */
465
466#define CORO_MAGIC_type_cv 26
467#define CORO_MAGIC_type_state PERL_MAGIC_ext
468
469#define CORO_MAGIC_NN(sv, type) \
470 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
471 ? SvMAGIC (sv) \
472 : mg_find (sv, type))
473
474#define CORO_MAGIC(sv, type) \
475 (ecb_expect_true (SvMAGIC (sv)) \
476 ? CORO_MAGIC_NN (sv, type) \
477 : 0)
478
479#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
480#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
481
482ECB_INLINE MAGIC *
483SvSTATEhv_p (pTHX_ SV *coro)
484{
485 MAGIC *mg;
486
487 if (ecb_expect_true (
488 SvTYPE (coro) == SVt_PVHV
489 && (mg = CORO_MAGIC_state (coro))
490 && mg->mg_virtual == &coro_state_vtbl
491 ))
492 return mg;
493
494 return 0;
495}
496
497ECB_INLINE struct coro *
498SvSTATE_ (pTHX_ SV *coro)
499{
500 MAGIC *mg;
501
502 if (SvROK (coro))
503 coro = SvRV (coro);
504
505 mg = SvSTATEhv_p (aTHX_ coro);
506 if (!mg)
507 croak ("Coro::State object required");
508
509 return (struct coro *)mg->mg_ptr;
510}
511
512#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
513
514/* faster than SvSTATE, but expects a coroutine hv */
515#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
516#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
517
518/*****************************************************************************/
519/* padlist management and caching */
520
521ECB_INLINE AV *
329coro_clone_padlist (pTHX_ CV *cv) 522coro_derive_padlist (pTHX_ CV *cv)
330{ 523{
331 AV *padlist = CvPADLIST (cv); 524 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 525 AV *newpadlist, *newpad;
333 526
334 newpadlist = newAV (); 527 newpadlist = newAV ();
… …
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 532 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 533#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 534 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist); 535 --AvFILLp (padlist);
343 536
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 537 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
345 av_store (newpadlist, 1, (SV *)newpad); 538 av_store (newpadlist, 1, (SV *)newpad);
346 539
347 return newpadlist; 540 return newpadlist;
348} 541}
349 542
350static void 543ECB_INLINE void
351free_padlist (pTHX_ AV *padlist) 544free_padlist (pTHX_ AV *padlist)
352{ 545{
353 /* may be during global destruction */ 546 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 547 if (!IN_DESTRUCT)
355 { 548 {
356 I32 i = AvFILLp (padlist); 549 I32 i = AvFILLp (padlist);
357 while (i >= 0) 550
551 while (i > 0) /* special-case index 0 */
358 { 552 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 553 /* we try to be extra-careful here */
360 if (svp) 554 AV *av = (AV *)AvARRAY (padlist)[i--];
361 { 555 I32 j = AvFILLp (av);
362 SV *sv; 556
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 557 while (j >= 0)
558 SvREFCNT_dec (AvARRAY (av)[j--]);
559
560 AvFILLp (av) = -1;
364 SvREFCNT_dec (sv); 561 SvREFCNT_dec (av);
365
366 SvREFCNT_dec (*svp);
367 }
368 } 562 }
369 563
564 SvREFCNT_dec (AvARRAY (padlist)[0]);
565
566 AvFILLp (padlist) = -1;
370 SvREFCNT_dec ((SV*)padlist); 567 SvREFCNT_dec ((SV*)padlist);
371 } 568 }
372} 569}
373 570
374static int 571static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 572coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 573{
377 AV *padlist; 574 AV *padlist;
378 AV *av = (AV *)mg->mg_obj; 575 AV *av = (AV *)mg->mg_obj;
576
577 /* perl manages to free our internal AV and _then_ call us */
578 if (IN_DESTRUCT)
579 return 0;
379 580
380 /* casting is fun. */ 581 /* casting is fun. */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 582 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
382 free_padlist (aTHX_ padlist); 583 free_padlist (aTHX_ padlist);
383 584
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 585 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 586
386 return 0; 587 return 0;
387} 588}
388
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 589
392static MGVTBL coro_cv_vtbl = { 590static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 591 0, 0, 0, 0,
394 coro_cv_free 592 coro_cv_free
395}; 593};
396 594
397#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445
446/* the next two functions merely cache the padlists */ 595/* the next two functions merely cache the padlists */
447static void 596ECB_INLINE void
448get_padlist (pTHX_ CV *cv) 597get_padlist (pTHX_ CV *cv)
449{ 598{
450 MAGIC *mg = CORO_MAGIC_cv (cv); 599 MAGIC *mg = CORO_MAGIC_cv (cv);
451 AV *av; 600 AV *av;
452 601
453 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 602 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
454 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 603 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
455 else 604 else
456 { 605 {
457#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 607 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 608 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 609 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 610 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 611 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 612 SvREFCNT_dec (cp);
464#else 613#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 614 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 615#endif
467 } 616 }
468} 617}
469 618
470static void 619ECB_INLINE void
471put_padlist (pTHX_ CV *cv) 620put_padlist (pTHX_ CV *cv)
472{ 621{
473 MAGIC *mg = CORO_MAGIC_cv (cv); 622 MAGIC *mg = CORO_MAGIC_cv (cv);
474 AV *av; 623 AV *av;
475 624
476 if (expect_false (!mg)) 625 if (ecb_expect_false (!mg))
477 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 626 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
478 627
479 av = (AV *)mg->mg_obj; 628 av = (AV *)mg->mg_obj;
480 629
481 if (expect_false (AvFILLp (av) >= AvMAX (av))) 630 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
482 av_extend (av, AvMAX (av) + 1); 631 av_extend (av, AvFILLp (av) + 1);
483 632
484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 633 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
485} 634}
486 635
487/** load & save, init *******************************************************/ 636/** load & save, init *******************************************************/
637
638/* swap sv heads, at least logically */
639static void
640swap_svs (pTHX_ Coro__State c)
641{
642 int i;
643
644 for (i = 0; i <= AvFILLp (c->swap_sv); )
645 {
646 SV *a = AvARRAY (c->swap_sv)[i++];
647 SV *b = AvARRAY (c->swap_sv)[i++];
648
649 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
650 SV tmp;
651
652 /* swap sv_any */
653 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
654
655 /* swap sv_flags */
656 SvFLAGS (&tmp) = SvFLAGS (a);
657 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
658 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
659
660#if PERL_VERSION_ATLEAST (5,10,0)
661 /* perl 5.10 complicates this _quite_ a bit, but it also is
662 * much faster, so no quarrels here. alternatively, we could
663 * sv_upgrade to avoid this.
664 */
665 {
666 /* swap sv_u */
667 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
668
669 /* if SvANY points to the head, we need to adjust the pointers,
670 * as the pointer for a still points to b, and maybe vice versa.
671 */
672 #define svany_in_head(type) \
673 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
674
675 if (svany_in_head (SvTYPE (a)))
676 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
677
678 if (svany_in_head (SvTYPE (b)))
679 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
680 }
681#endif
682 }
683}
684
685#define SWAP_SVS(coro) \
686 if (ecb_expect_false ((coro)->swap_sv)) \
687 swap_svs (aTHX_ (coro))
688
689static void
690on_enterleave_call (pTHX_ SV *cb);
488 691
489static void 692static void
490load_perl (pTHX_ Coro__State c) 693load_perl (pTHX_ Coro__State c)
491{ 694{
492 perl_slots *slot = c->slot; 695 perl_slots *slot = c->slot;
493 c->slot = 0; 696 c->slot = 0;
494 697
495 PL_mainstack = c->mainstack; 698 PL_mainstack = c->mainstack;
496 699
497 GvSV (PL_defgv) = slot->defsv; 700#if CORO_JIT
498 GvAV (PL_defgv) = slot->defav; 701 load_perl_slots (slot);
499 GvSV (PL_errgv) = slot->errsv; 702#else
500 GvSV (irsgv) = slot->irsgv;
501
502 #define VAR(name,type) PL_ ## name = slot->name; 703 #define VARx(name,expr,type) expr = slot->name;
503 # include "state.h" 704 # include "state.h"
504 #undef VAR 705 #undef VARx
706#endif
505 707
506 { 708 {
507 dSP; 709 dSP;
508 710
509 CV *cv; 711 CV *cv;
510 712
511 /* now do the ugly restore mess */ 713 /* now do the ugly restore mess */
512 while (expect_true (cv = (CV *)POPs)) 714 while (ecb_expect_true (cv = (CV *)POPs))
513 { 715 {
514 put_padlist (aTHX_ cv); /* mark this padlist as available */ 716 put_padlist (aTHX_ cv); /* mark this padlist as available */
515 CvDEPTH (cv) = PTR2IV (POPs); 717 CvDEPTH (cv) = PTR2IV (POPs);
516 CvPADLIST (cv) = (AV *)POPs; 718 CvPADLIST (cv) = (AV *)POPs;
517 } 719 }
518 720
519 PUTBACK; 721 PUTBACK;
520 } 722 }
521 723
522 slf_frame = c->slf_frame; 724 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 725 CORO_THROW = c->except;
726
727 if (ecb_expect_false (enable_times))
728 {
729 if (ecb_expect_false (!times_valid))
730 coro_times_update ();
731
732 coro_times_sub (c);
733 }
734
735 if (ecb_expect_false (c->on_enter))
736 {
737 int i;
738
739 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
740 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
741 }
742
743 SWAP_SVS (c);
524} 744}
525 745
526static void 746static void
527save_perl (pTHX_ Coro__State c) 747save_perl (pTHX_ Coro__State c)
528{ 748{
529 c->throw = coro_throw; 749 SWAP_SVS (c);
750
751 if (ecb_expect_false (c->on_leave))
752 {
753 int i;
754
755 for (i = AvFILLp (c->on_leave); i >= 0; --i)
756 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
757 }
758
759 times_valid = 0;
760
761 if (ecb_expect_false (enable_times))
762 {
763 coro_times_update (); times_valid = 1;
764 coro_times_add (c);
765 }
766
767 c->except = CORO_THROW;
530 c->slf_frame = slf_frame; 768 c->slf_frame = slf_frame;
531 769
532 { 770 {
533 dSP; 771 dSP;
534 I32 cxix = cxstack_ix; 772 I32 cxix = cxstack_ix;
… …
542 780
543 XPUSHs (Nullsv); 781 XPUSHs (Nullsv);
544 /* this loop was inspired by pp_caller */ 782 /* this loop was inspired by pp_caller */
545 for (;;) 783 for (;;)
546 { 784 {
547 while (expect_true (cxix >= 0)) 785 while (ecb_expect_true (cxix >= 0))
548 { 786 {
549 PERL_CONTEXT *cx = &ccstk[cxix--]; 787 PERL_CONTEXT *cx = &ccstk[cxix--];
550 788
551 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 789 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
552 { 790 {
553 CV *cv = cx->blk_sub.cv; 791 CV *cv = cx->blk_sub.cv;
554 792
555 if (expect_true (CvDEPTH (cv))) 793 if (ecb_expect_true (CvDEPTH (cv)))
556 { 794 {
557 EXTEND (SP, 3); 795 EXTEND (SP, 3);
558 PUSHs ((SV *)CvPADLIST (cv)); 796 PUSHs ((SV *)CvPADLIST (cv));
559 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 797 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
560 PUSHs ((SV *)cv); 798 PUSHs ((SV *)cv);
… …
563 get_padlist (aTHX_ cv); 801 get_padlist (aTHX_ cv);
564 } 802 }
565 } 803 }
566 } 804 }
567 805
568 if (expect_true (top_si->si_type == PERLSI_MAIN)) 806 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
569 break; 807 break;
570 808
571 top_si = top_si->si_prev; 809 top_si = top_si->si_prev;
572 ccstk = top_si->si_cxstack; 810 ccstk = top_si->si_cxstack;
573 cxix = top_si->si_cxix; 811 cxix = top_si->si_cxix;
… …
575 813
576 PUTBACK; 814 PUTBACK;
577 } 815 }
578 816
579 /* allocate some space on the context stack for our purposes */ 817 /* allocate some space on the context stack for our purposes */
580 /* we manually unroll here, as usually 2 slots is enough */ 818 if (ecb_expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
581 if (SLOT_COUNT >= 1) CXINC;
582 if (SLOT_COUNT >= 2) CXINC;
583 if (SLOT_COUNT >= 3) CXINC;
584 { 819 {
585 int i; 820 unsigned int i;
821
586 for (i = 3; i < SLOT_COUNT; ++i) 822 for (i = 0; i < SLOT_COUNT; ++i)
587 CXINC; 823 CXINC;
588 } 824
589 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 825 cxstack_ix -= SLOT_COUNT; /* undo allocation */
826 }
590 827
591 c->mainstack = PL_mainstack; 828 c->mainstack = PL_mainstack;
592 829
593 { 830 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 831 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595 832
596 slot->defav = GvAV (PL_defgv); 833#if CORO_JIT
597 slot->defsv = DEFSV; 834 save_perl_slots (slot);
598 slot->errsv = ERRSV; 835#else
599 slot->irsgv = GvSV (irsgv);
600
601 #define VAR(name,type) slot->name = PL_ ## name; 836 #define VARx(name,expr,type) slot->name = expr;
602 # include "state.h" 837 # include "state.h"
603 #undef VAR 838 #undef VARx
839#endif
604 } 840 }
605} 841}
606 842
607/* 843/*
608 * allocate various perl stacks. This is almost an exact copy 844 * allocate various perl stacks. This is almost an exact copy
609 * of perl.c:init_stacks, except that it uses less memory 845 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 846 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 847 * not usually need a lot of stackspace.
612 */ 848 */
613#if CORO_PREFER_PERL_FUNCTIONS 849#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 850# define coro_init_stacks(thx) init_stacks ()
615#else 851#else
616static void 852static void
617coro_init_stacks (pTHX) 853coro_init_stacks (pTHX)
618{ 854{
619 PL_curstackinfo = new_stackinfo(32, 8); 855 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
620 PL_curstackinfo->si_type = PERLSI_MAIN; 856 PL_curstackinfo->si_type = PERLSI_MAIN;
621 PL_curstack = PL_curstackinfo->si_stack; 857 PL_curstack = PL_curstackinfo->si_stack;
622 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 858 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
623 859
624 PL_stack_base = AvARRAY(PL_curstack); 860 PL_stack_base = AvARRAY(PL_curstack);
… …
682#if !PERL_VERSION_ATLEAST (5,10,0) 918#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 919 Safefree (PL_retstack);
684#endif 920#endif
685} 921}
686 922
923#define CORO_RSS \
924 rss += sizeof (SYM (curstackinfo)); \
925 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
926 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
927 rss += SYM (tmps_max) * sizeof (SV *); \
928 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
929 rss += SYM (scopestack_max) * sizeof (I32); \
930 rss += SYM (savestack_max) * sizeof (ANY);
931
687static size_t 932static size_t
688coro_rss (pTHX_ struct coro *coro) 933coro_rss (pTHX_ struct coro *coro)
689{ 934{
690 size_t rss = sizeof (*coro); 935 size_t rss = sizeof (*coro);
691 936
692 if (coro->mainstack) 937 if (coro->mainstack)
693 { 938 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 939 if (coro->flags & CF_RUNNING)
698 { 940 {
699 slot = &tmp_slot; 941 #define SYM(sym) PL_ ## sym
700 942 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 943 #undef SYM
704 } 944 }
705 else 945 else
706 slot = coro->slot;
707
708 if (slot)
709 { 946 {
710 rss += sizeof (slot->curstackinfo); 947 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 948 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 949 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 950 }
722 } 951 }
723 952
724 return rss; 953 return rss;
725} 954}
… …
738#endif 967#endif
739 968
740/* 969/*
741 * This overrides the default magic get method of %SIG elements. 970 * This overrides the default magic get method of %SIG elements.
742 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 971 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
743 * and instead of tryign to save and restore the hash elements, we just provide 972 * and instead of trying to save and restore the hash elements (extremely slow),
744 * readback here. 973 * we just provide our own readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */ 974 */
749static int 975static int ecb_cold
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 976coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{ 977{
752 const char *s = MgPV_nolen_const (mg); 978 const char *s = MgPV_nolen_const (mg);
753 979
754 if (*s == '_') 980 if (*s == '_')
… …
766 } 992 }
767 993
768 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 994 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
769} 995}
770 996
771static int 997static int ecb_cold
772coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 998coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
773{ 999{
774 const char *s = MgPV_nolen_const (mg); 1000 const char *s = MgPV_nolen_const (mg);
775 1001
776 if (*s == '_') 1002 if (*s == '_')
… …
790 } 1016 }
791 1017
792 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1018 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
793} 1019}
794 1020
795static int 1021static int ecb_cold
796coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1022coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
797{ 1023{
798 const char *s = MgPV_nolen_const (mg); 1024 const char *s = MgPV_nolen_const (mg);
799 1025
800 if (*s == '_') 1026 if (*s == '_')
… …
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1031 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806 1032
807 if (svp) 1033 if (svp)
808 { 1034 {
809 SV *old = *svp; 1035 SV *old = *svp;
810 *svp = newSVsv (sv); 1036 *svp = SvOK (sv) ? newSVsv (sv) : 0;
811 SvREFCNT_dec (old); 1037 SvREFCNT_dec (old);
812 return 0; 1038 return 0;
813 } 1039 }
814 } 1040 }
815 1041
… …
827slf_check_nop (pTHX_ struct CoroSLF *frame) 1053slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 1054{
829 return 0; 1055 return 0;
830} 1056}
831 1057
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1058static int
1059slf_check_repeat (pTHX_ struct CoroSLF *frame)
1060{
1061 return 1;
1062}
1063
1064static UNOP init_perl_op;
1065
1066ecb_noinline static void /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 1067init_perl (pTHX_ struct coro *coro)
834{ 1068{
835 /* 1069 /*
836 * emulate part of the perl startup here. 1070 * emulate part of the perl startup here.
837 */ 1071 */
838 coro_init_stacks (aTHX); 1072 coro_init_stacks (aTHX);
839 1073
840 PL_runops = RUNOPS_DEFAULT; 1074 PL_runops = RUNOPS_DEFAULT;
841 PL_curcop = &PL_compiling; 1075 PL_curcop = &PL_compiling;
842 PL_in_eval = EVAL_NULL; 1076 PL_in_eval = EVAL_NULL;
843 PL_comppad = 0; 1077 PL_comppad = 0;
1078 PL_comppad_name = 0;
1079 PL_comppad_name_fill = 0;
1080 PL_comppad_name_floor = 0;
844 PL_curpm = 0; 1081 PL_curpm = 0;
845 PL_curpad = 0; 1082 PL_curpad = 0;
846 PL_localizing = 0; 1083 PL_localizing = 0;
847 PL_dirty = 0;
848 PL_restartop = 0; 1084 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0) 1085#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0; 1086 PL_parser = 0;
851#endif 1087#endif
1088 PL_hints = 0;
852 1089
853 /* recreate the die/warn hooks */ 1090 /* recreate the die/warn hooks */
854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1091 PL_diehook = SvREFCNT_inc (rv_diehook);
855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1092 PL_warnhook = SvREFCNT_inc (rv_warnhook);
856 1093
857 GvSV (PL_defgv) = newSV (0); 1094 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0; 1095 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0); 1096 GvSV (PL_errgv) = newSV (0);
860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1097 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1098 GvHV (PL_hintgv) = 0;
861 PL_rs = newSVsv (GvSV (irsgv)); 1099 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1100 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
863 1101
864 { 1102 {
865 dSP; 1103 dSP;
866 UNOP myop; 1104 UNOP myop;
867 1105
868 Zero (&myop, 1, UNOP); 1106 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 1107 myop.op_next = Nullop;
1108 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 1109 myop.op_flags = OPf_WANT_VOID;
871 1110
872 PUSHMARK (SP); 1111 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1112 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 1113 PUTBACK;
875 PL_op = (OP *)&myop; 1114 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1115 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 1116 }
879 1117
880 /* this newly created coroutine might be run on an existing cctx which most 1118 /* this newly created coroutine might be run on an existing cctx which most
881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1119 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882 */ 1120 */
883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1121 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1122 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1123 slf_frame.destroy = 0;
885 1124
886 coro_throw = coro->throw; 1125 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
887} 1126 init_perl_op.op_next = PL_op;
1127 init_perl_op.op_type = OP_ENTERSUB;
1128 init_perl_op.op_ppaddr = pp_slf;
1129 /* no flags etc. required, as an init function won't be called */
888 1130
1131 PL_op = (OP *)&init_perl_op;
1132
1133 /* copy throw, in case it was set before init_perl */
1134 CORO_THROW = coro->except;
1135
1136 SWAP_SVS (coro);
1137
1138 if (ecb_expect_false (enable_times))
1139 {
1140 coro_times_update ();
1141 coro_times_sub (coro);
1142 }
1143}
1144
889static void 1145static void
890coro_destruct (pTHX_ struct coro *coro) 1146coro_unwind_stacks (pTHX)
891{ 1147{
892 if (!IN_DESTRUCT) 1148 if (!IN_DESTRUCT)
893 { 1149 {
894 /* restore all saved variables and stuff */ 1150 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0); 1151 LEAVE_SCOPE (0);
… …
903 POPSTACK_TO (PL_mainstack); 1159 POPSTACK_TO (PL_mainstack);
904 1160
905 /* unwind main stack */ 1161 /* unwind main stack */
906 dounwind (-1); 1162 dounwind (-1);
907 } 1163 }
1164}
908 1165
909 SvREFCNT_dec (GvSV (PL_defgv)); 1166static void
910 SvREFCNT_dec (GvAV (PL_defgv)); 1167destroy_perl (pTHX_ struct coro *coro)
911 SvREFCNT_dec (GvSV (PL_errgv)); 1168{
912 SvREFCNT_dec (PL_defoutgv); 1169 SV *svf [9];
913 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv));
915 1170
916 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook);
918 1171 {
1172 SV *old_current = SvRV (coro_current);
1173 struct coro *current = SvSTATE (old_current);
1174
1175 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1176
1177 save_perl (aTHX_ current);
1178
1179 /* this will cause transfer_check to croak on block*/
1180 SvRV_set (coro_current, (SV *)coro->hv);
1181
1182 load_perl (aTHX_ coro);
1183
1184 coro_unwind_stacks (aTHX);
1185
1186 /* restore swapped sv's */
1187 SWAP_SVS (coro);
1188
1189 coro_destruct_stacks (aTHX);
1190
1191 // now save some sv's to be free'd later
1192 svf [0] = GvSV (PL_defgv);
1193 svf [1] = (SV *)GvAV (PL_defgv);
1194 svf [2] = GvSV (PL_errgv);
1195 svf [3] = (SV *)PL_defoutgv;
1196 svf [4] = PL_rs;
1197 svf [5] = GvSV (irsgv);
1198 svf [6] = (SV *)GvHV (PL_hintgv);
1199 svf [7] = PL_diehook;
1200 svf [8] = PL_warnhook;
1201 assert (9 == sizeof (svf) / sizeof (*svf));
1202
1203 SvRV_set (coro_current, old_current);
1204
1205 load_perl (aTHX_ current);
1206 }
1207
1208 {
1209 unsigned int i;
1210
1211 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1212 SvREFCNT_dec (svf [i]);
1213
919 SvREFCNT_dec (coro->saved_deffh); 1214 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 1215 SvREFCNT_dec (coro->rouse_cb);
921 1216 SvREFCNT_dec (coro->invoke_cb);
922 coro_destruct_stacks (aTHX); 1217 SvREFCNT_dec (coro->invoke_av);
1218 }
923} 1219}
924 1220
925INLINE void 1221ECB_INLINE void
926free_coro_mortal (pTHX) 1222free_coro_mortal (pTHX)
927{ 1223{
928 if (expect_true (coro_mortal)) 1224 if (ecb_expect_true (coro_mortal))
929 { 1225 {
930 SvREFCNT_dec (coro_mortal); 1226 SvREFCNT_dec ((SV *)coro_mortal);
931 coro_mortal = 0; 1227 coro_mortal = 0;
932 } 1228 }
933} 1229}
934 1230
935static int 1231static int
936runops_trace (pTHX) 1232runops_trace (pTHX)
937{ 1233{
938 COP *oldcop = 0; 1234 COP *oldcop = 0;
939 int oldcxix = -2; 1235 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 1236
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1237 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 1238 {
945 PERL_ASYNC_CHECK (); 1239 PERL_ASYNC_CHECK ();
946 1240
947 if (cctx->flags & CC_TRACE_ALL) 1241 if (cctx_current->flags & CC_TRACE_ALL)
948 { 1242 {
949 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1243 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
950 { 1244 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1245 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 1246 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 1247 AV *av = newAV (); /* return values */
954 SV **cb; 1248 SV **cb;
… …
991 1285
992 if (PL_curcop != &PL_compiling) 1286 if (PL_curcop != &PL_compiling)
993 { 1287 {
994 SV **cb; 1288 SV **cb;
995 1289
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1290 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
997 { 1291 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1292 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1293
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1294 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1295 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1296 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1297 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1298 SV *fullname = sv_2mortal (newSV (0));
1006 1299
1007 if (isGV (gv)) 1300 if (isGV (gv))
… …
1012 SAVETMPS; 1305 SAVETMPS;
1013 EXTEND (SP, 3); 1306 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1307 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1308 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1309 PUSHs (fullname);
1017 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1310 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1018 PUTBACK; 1311 PUTBACK;
1019 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1312 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1020 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1313 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1021 SPAGAIN; 1314 SPAGAIN;
1022 FREETMPS; 1315 FREETMPS;
… …
1025 } 1318 }
1026 1319
1027 oldcxix = cxstack_ix; 1320 oldcxix = cxstack_ix;
1028 } 1321 }
1029 1322
1030 if (cctx->flags & CC_TRACE_LINE) 1323 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1324 {
1032 dSP; 1325 dSP;
1033 1326
1034 PL_runops = RUNOPS_DEFAULT; 1327 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1328 ENTER;
… …
1054 1347
1055 TAINT_NOT; 1348 TAINT_NOT;
1056 return 0; 1349 return 0;
1057} 1350}
1058 1351
1352static struct CoroSLF cctx_ssl_frame;
1353
1059static void 1354static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1355slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1356{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1357 ta->prev = 0;
1064} 1358}
1065 1359
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1360static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1361slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */
1069/* also initialises PL_top_env */
1070static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx)
1072{ 1362{
1073 dSP; 1363 *frame = cctx_ssl_frame;
1074 UNOP myop;
1075 1364
1365 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1366}
1367
1368/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1369static void ecb_noinline
1370cctx_prepare (pTHX)
1371{
1076 PL_top_env = &PL_start_env; 1372 PL_top_env = &PL_start_env;
1077 1373
1078 if (cctx->flags & CC_TRACE) 1374 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1375 PL_runops = runops_trace;
1080 1376
1081 Zero (&myop, 1, UNOP); 1377 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1378 * that can lead to creation of a new cctx */
1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1379 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1380 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1084 1381
1085 PUSHMARK (SP); 1382 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1383 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1384
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1385 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1386 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1387}
1094 1388
1095/* the tail of transfer: execute stuff we can only do after a transfer */ 1389/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void 1390ECB_INLINE void
1097transfer_tail (pTHX) 1391transfer_tail (pTHX)
1098{ 1392{
1099 free_coro_mortal (aTHX); 1393 free_coro_mortal (aTHX);
1100} 1394}
1101 1395
… …
1116 /* normally we would need to skip the entersub here */ 1410 /* normally we would need to skip the entersub here */
1117 /* not doing so will re-execute it, which is exactly what we want */ 1411 /* not doing so will re-execute it, which is exactly what we want */
1118 /* PL_nop = PL_nop->op_next */ 1412 /* PL_nop = PL_nop->op_next */
1119 1413
1120 /* inject a fake subroutine call to cctx_init */ 1414 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1415 cctx_prepare (aTHX);
1122 1416
1123 /* cctx_run is the alternative tail of transfer() */ 1417 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1418 transfer_tail (aTHX);
1125 1419
1126 /* somebody or something will hit me for both perl_run and PL_restartop */ 1420 /* somebody or something will hit me for both perl_run and PL_restartop */
1127 PL_restartop = PL_op; 1421 PL_restartop = PL_op;
1128 perl_run (PL_curinterp); 1422 perl_run (PL_curinterp);
1423 /*
1424 * Unfortunately, there is no way to get at the return values of the
1425 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1426 * runtime errors here, as this is just a random interpreter, not a thread.
1427 */
1129 1428
1130 /* 1429 /*
1131 * If perl-run returns we assume exit() was being called or the coro 1430 * If perl-run returns we assume exit() was being called or the coro
1132 * fell off the end, which seems to be the only valid (non-bug) 1431 * fell off the end, which seems to be the only valid (non-bug)
1133 * reason for perl_run to return. We try to exit by jumping to the 1432 * reason for perl_run to return. We try to exit by jumping to the
1134 * bootstrap-time "top" top_env, as we cannot restore the "main" 1433 * bootstrap-time "top" top_env, as we cannot restore the "main"
1135 * coroutine as Coro has no such concept 1434 * coroutine as Coro has no such concept.
1435 * This actually isn't valid with the pthread backend, but OSes requiring
1436 * that backend are too broken to do it in a standards-compliant way.
1136 */ 1437 */
1137 PL_top_env = main_top_env; 1438 PL_top_env = main_top_env;
1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1439 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 } 1440 }
1140} 1441}
… …
1217cctx_destroy (coro_cctx *cctx) 1518cctx_destroy (coro_cctx *cctx)
1218{ 1519{
1219 if (!cctx) 1520 if (!cctx)
1220 return; 1521 return;
1221 1522
1523 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1524
1222 --cctx_count; 1525 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1526 coro_destroy (&cctx->cctx);
1224 1527
1225 /* coro_transfer creates new, empty cctx's */ 1528 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr) 1529 if (cctx->sptr)
… …
1244#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1547#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1245 1548
1246static coro_cctx * 1549static coro_cctx *
1247cctx_get (pTHX) 1550cctx_get (pTHX)
1248{ 1551{
1249 while (expect_true (cctx_first)) 1552 while (ecb_expect_true (cctx_first))
1250 { 1553 {
1251 coro_cctx *cctx = cctx_first; 1554 coro_cctx *cctx = cctx_first;
1252 cctx_first = cctx->next; 1555 cctx_first = cctx->next;
1253 --cctx_idle; 1556 --cctx_idle;
1254 1557
1255 if (expect_true (!CCTX_EXPIRED (cctx))) 1558 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1256 return cctx; 1559 return cctx;
1257 1560
1258 cctx_destroy (cctx); 1561 cctx_destroy (cctx);
1259 } 1562 }
1260 1563
… …
1265cctx_put (coro_cctx *cctx) 1568cctx_put (coro_cctx *cctx)
1266{ 1569{
1267 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1570 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1268 1571
1269 /* free another cctx if overlimit */ 1572 /* free another cctx if overlimit */
1270 if (expect_false (cctx_idle >= cctx_max_idle)) 1573 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1271 { 1574 {
1272 coro_cctx *first = cctx_first; 1575 coro_cctx *first = cctx_first;
1273 cctx_first = first->next; 1576 cctx_first = first->next;
1274 --cctx_idle; 1577 --cctx_idle;
1275 1578
… …
1286static void 1589static void
1287transfer_check (pTHX_ struct coro *prev, struct coro *next) 1590transfer_check (pTHX_ struct coro *prev, struct coro *next)
1288{ 1591{
1289 /* TODO: throwing up here is considered harmful */ 1592 /* TODO: throwing up here is considered harmful */
1290 1593
1291 if (expect_true (prev != next)) 1594 if (ecb_expect_true (prev != next))
1292 { 1595 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1596 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1597 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1295 1598
1296 if (expect_false (next->flags & CF_RUNNING)) 1599 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1298
1299 if (expect_false (next->flags & CF_DESTROYED))
1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1600 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1301 1601
1302#if !PERL_VERSION_ATLEAST (5,10,0) 1602#if !PERL_VERSION_ATLEAST (5,10,0)
1303 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1603 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1604 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif 1605#endif
1306 } 1606 }
1307} 1607}
1308 1608
1309/* always use the TRANSFER macro */ 1609/* always use the TRANSFER macro */
1310static void NOINLINE /* noinline so we have a fixed stackframe */ 1610static void ecb_noinline /* noinline so we have a fixed stackframe */
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1611transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1612{
1313 dSTACKLEVEL; 1613 dSTACKLEVEL;
1314 1614
1315 /* sometimes transfer is only called to set idle_sp */ 1615 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1616 if (ecb_expect_false (!prev))
1317 { 1617 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1618 cctx_current->idle_sp = STACKLEVEL;
1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1619 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1320 } 1620 }
1321 else if (expect_true (prev != next)) 1621 else if (ecb_expect_true (prev != next))
1322 { 1622 {
1323 coro_cctx *prev__cctx; 1623 coro_cctx *cctx_prev;
1324 1624
1325 if (expect_false (prev->flags & CF_NEW)) 1625 if (ecb_expect_false (prev->flags & CF_NEW))
1326 { 1626 {
1327 /* create a new empty/source context */ 1627 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1628 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1629 prev->flags |= CF_RUNNING;
1331 } 1630 }
1332 1631
1333 prev->flags &= ~CF_RUNNING; 1632 prev->flags &= ~CF_RUNNING;
1334 next->flags |= CF_RUNNING; 1633 next->flags |= CF_RUNNING;
1335 1634
1336 /* first get rid of the old state */ 1635 /* first get rid of the old state */
1337 save_perl (aTHX_ prev); 1636 save_perl (aTHX_ prev);
1338 1637
1339 if (expect_false (next->flags & CF_NEW)) 1638 if (ecb_expect_false (next->flags & CF_NEW))
1340 { 1639 {
1341 /* need to start coroutine */ 1640 /* need to start coroutine */
1342 next->flags &= ~CF_NEW; 1641 next->flags &= ~CF_NEW;
1343 /* setup coroutine call */ 1642 /* setup coroutine call */
1344 coro_setup (aTHX_ next); 1643 init_perl (aTHX_ next);
1345 } 1644 }
1346 else 1645 else
1347 load_perl (aTHX_ next); 1646 load_perl (aTHX_ next);
1348 1647
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */ 1648 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1649 if (ecb_expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1650 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1651 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1652 && !force_cctx
1356 )) 1653 ))
1357 { 1654 {
1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1655 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1656 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1360 1657
1361 prev->cctx = 0;
1362
1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1658 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1659 /* without this the next cctx_get might destroy the running cctx while still in use */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1660 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1661 if (ecb_expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1662 next->cctx = cctx_get (aTHX);
1368 1663
1369 cctx_put (prev__cctx); 1664 cctx_put (cctx_current);
1370 } 1665 }
1666 else
1667 prev->cctx = cctx_current;
1371 1668
1372 ++next->usecount; 1669 ++next->usecount;
1373 1670
1374 if (expect_true (!next->cctx)) 1671 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1672 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1673
1377 if (expect_false (prev__cctx != next->cctx)) 1674 next->cctx = 0;
1675
1676 if (ecb_expect_false (cctx_prev != cctx_current))
1378 { 1677 {
1379 prev__cctx->top_env = PL_top_env; 1678 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1679 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1680 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1681 }
1383 1682
1384 transfer_tail (aTHX); 1683 transfer_tail (aTHX);
1385 } 1684 }
1386} 1685}
… …
1388#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1687#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1389#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1688#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1390 1689
1391/** high level stuff ********************************************************/ 1690/** high level stuff ********************************************************/
1392 1691
1692/* this function is actually Coro, not Coro::State, but we call it from here */
1693/* because it is convenient - but it hasn't been declared yet for that reason */
1393static int 1694static void
1695coro_call_on_destroy (pTHX_ struct coro *coro);
1696
1697static void
1394coro_state_destroy (pTHX_ struct coro *coro) 1698coro_state_destroy (pTHX_ struct coro *coro)
1395{ 1699{
1396 if (coro->flags & CF_DESTROYED) 1700 if (coro->flags & CF_ZOMBIE)
1397 return 0; 1701 return;
1398 1702
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro); 1703 slf_destroy (aTHX_ coro);
1401 1704
1402 coro->flags |= CF_DESTROYED; 1705 coro->flags |= CF_ZOMBIE;
1403 1706
1404 if (coro->flags & CF_READY) 1707 if (coro->flags & CF_READY)
1405 { 1708 {
1406 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1709 /* reduce nready, as destroying a ready coro effectively unreadies it */
1407 /* alternative: look through all ready queues and remove the coro */ 1710 /* alternative: look through all ready queues and remove the coro */
1408 --coro_nready; 1711 --coro_nready;
1409 } 1712 }
1410 else 1713 else
1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1714 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1412 1715
1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1414 {
1415 struct coro temp;
1416
1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1418
1419 save_perl (aTHX_ &temp);
1420 load_perl (aTHX_ coro);
1421
1422 coro_destruct (aTHX_ coro);
1423
1424 load_perl (aTHX_ &temp);
1425
1426 coro->slot = 0;
1427 }
1428
1429 cctx_destroy (coro->cctx);
1430 SvREFCNT_dec (coro->args);
1431
1432 if (coro->next) coro->next->prev = coro->prev; 1716 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1717 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1718 if (coro == coro_first) coro_first = coro->next;
1435 1719
1436 return 1; 1720 if (coro->mainstack
1721 && coro->mainstack != main_mainstack
1722 && coro->slot
1723 && !PL_dirty)
1724 destroy_perl (aTHX_ coro);
1725
1726 cctx_destroy (coro->cctx);
1727 SvREFCNT_dec (coro->startcv);
1728 SvREFCNT_dec (coro->args);
1729 SvREFCNT_dec (coro->swap_sv);
1730 SvREFCNT_dec (CORO_THROW);
1731
1732 coro_call_on_destroy (aTHX_ coro);
1733
1734 /* more destruction mayhem in coro_state_free */
1437} 1735}
1438 1736
1439static int 1737static int
1440coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1738coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1441{ 1739{
1442 struct coro *coro = (struct coro *)mg->mg_ptr; 1740 struct coro *coro = (struct coro *)mg->mg_ptr;
1443 mg->mg_ptr = 0; 1741 mg->mg_ptr = 0;
1444 1742
1445 coro->hv = 0;
1446
1447 if (--coro->refcnt < 0)
1448 {
1449 coro_state_destroy (aTHX_ coro); 1743 coro_state_destroy (aTHX_ coro);
1744 SvREFCNT_dec (coro->on_destroy);
1745 SvREFCNT_dec (coro->status);
1746
1450 Safefree (coro); 1747 Safefree (coro);
1451 }
1452 1748
1453 return 0; 1749 return 0;
1454} 1750}
1455 1751
1456static int 1752static int ecb_cold
1457coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1753coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1458{ 1754{
1459 struct coro *coro = (struct coro *)mg->mg_ptr; 1755 /* called when perl clones the current process the slow way (windows process emulation) */
1460 1756 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1461 ++coro->refcnt; 1757 mg->mg_ptr = 0;
1758 mg->mg_virtual = 0;
1462 1759
1463 return 0; 1760 return 0;
1464} 1761}
1465 1762
1466static MGVTBL coro_state_vtbl = { 1763static MGVTBL coro_state_vtbl = {
… …
1491 TRANSFER (ta, 1); 1788 TRANSFER (ta, 1);
1492} 1789}
1493 1790
1494/** Coro ********************************************************************/ 1791/** Coro ********************************************************************/
1495 1792
1496INLINE void 1793ECB_INLINE void
1497coro_enq (pTHX_ struct coro *coro) 1794coro_enq (pTHX_ struct coro *coro)
1498{ 1795{
1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1796 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1500}
1501 1797
1502INLINE SV * 1798 SvREFCNT_inc_NN (coro->hv);
1799
1800 coro->next_ready = 0;
1801 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1802 ready [1] = coro;
1803}
1804
1805ECB_INLINE struct coro *
1503coro_deq (pTHX) 1806coro_deq (pTHX)
1504{ 1807{
1505 int prio; 1808 int prio;
1506 1809
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1810 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1508 if (AvFILLp (coro_ready [prio]) >= 0) 1811 {
1509 return av_shift (coro_ready [prio]); 1812 struct coro **ready = coro_ready [prio];
1813
1814 if (ready [0])
1815 {
1816 struct coro *coro = ready [0];
1817 ready [0] = coro->next_ready;
1818 return coro;
1819 }
1820 }
1510 1821
1511 return 0; 1822 return 0;
1823}
1824
1825static void
1826invoke_sv_ready_hook_helper (void)
1827{
1828 dTHX;
1829 dSP;
1830
1831 ENTER;
1832 SAVETMPS;
1833
1834 PUSHMARK (SP);
1835 PUTBACK;
1836 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1837
1838 FREETMPS;
1839 LEAVE;
1512} 1840}
1513 1841
1514static int 1842static int
1515api_ready (pTHX_ SV *coro_sv) 1843api_ready (pTHX_ SV *coro_sv)
1516{ 1844{
1517 struct coro *coro;
1518 SV *sv_hook;
1519 void (*xs_hook)(void);
1520
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1845 struct coro *coro = SvSTATE (coro_sv);
1525 1846
1526 if (coro->flags & CF_READY) 1847 if (coro->flags & CF_READY)
1527 return 0; 1848 return 0;
1528 1849
1529 coro->flags |= CF_READY; 1850 coro->flags |= CF_READY;
1530 1851
1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1533
1534 coro_enq (aTHX_ coro); 1852 coro_enq (aTHX_ coro);
1535 ++coro_nready;
1536 1853
1537 if (sv_hook) 1854 if (!coro_nready++)
1538 { 1855 if (coroapi.readyhook)
1539 dSP; 1856 coroapi.readyhook ();
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1555 1857
1556 return 1; 1858 return 1;
1557} 1859}
1558 1860
1559static int 1861static int
1560api_is_ready (pTHX_ SV *coro_sv) 1862api_is_ready (pTHX_ SV *coro_sv)
1561{ 1863{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1864 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1865}
1564 1866
1867/* expects to own a reference to next->hv */
1565INLINE void 1868ECB_INLINE void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1869prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1870{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1871 SV *prev_sv = SvRV (coro_current);
1872
1608 ta->prev = SvSTATE_hv (prev_sv); 1873 ta->prev = SvSTATE_hv (prev_sv);
1874 ta->next = next;
1875
1609 TRANSFER_CHECK (*ta); 1876 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1877
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1878 SvRV_set (coro_current, (SV *)next->hv);
1613 1879
1614 free_coro_mortal (aTHX); 1880 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1881 coro_mortal = prev_sv;
1616} 1882}
1617 1883
1884static void
1885prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1886{
1887 for (;;)
1888 {
1889 struct coro *next = coro_deq (aTHX);
1890
1891 if (ecb_expect_true (next))
1892 {
1893 /* cannot transfer to destroyed coros, skip and look for next */
1894 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1895 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1896 else
1897 {
1898 next->flags &= ~CF_READY;
1899 --coro_nready;
1900
1901 prepare_schedule_to (aTHX_ ta, next);
1902 break;
1903 }
1904 }
1905 else
1906 {
1907 /* nothing to schedule: call the idle handler */
1908 if (SvROK (sv_idle)
1909 && SvOBJECT (SvRV (sv_idle)))
1910 {
1911 if (SvRV (sv_idle) == SvRV (coro_current))
1912 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1913
1914 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1915 api_ready (aTHX_ SvRV (sv_idle));
1916 --coro_nready;
1917 }
1918 else
1919 {
1920 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1921 dSP;
1922
1923 ENTER;
1924 SAVETMPS;
1925
1926 PUSHMARK (SP);
1927 PUTBACK;
1928 call_sv (sv_idle, G_VOID | G_DISCARD);
1929
1930 FREETMPS;
1931 LEAVE;
1932 }
1933 }
1934 }
1935}
1936
1618INLINE void 1937ECB_INLINE void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 1938prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1939{
1621 api_ready (aTHX_ coro_current); 1940 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1941 prepare_schedule (aTHX_ ta);
1623} 1942}
1624 1943
1625INLINE void 1944ECB_INLINE void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1945prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{ 1946{
1628 SV *prev = SvRV (coro_current); 1947 SV *prev = SvRV (coro_current);
1629 1948
1630 if (coro_nready) 1949 if (coro_nready)
… …
1643 1962
1644 prepare_schedule (aTHX_ &ta); 1963 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1); 1964 TRANSFER (ta, 1);
1646} 1965}
1647 1966
1967static void
1968api_schedule_to (pTHX_ SV *coro_sv)
1969{
1970 struct coro_transfer_args ta;
1971 struct coro *next = SvSTATE (coro_sv);
1972
1973 SvREFCNT_inc_NN (coro_sv);
1974 prepare_schedule_to (aTHX_ &ta, next);
1975}
1976
1648static int 1977static int
1649api_cede (pTHX) 1978api_cede (pTHX)
1650{ 1979{
1651 struct coro_transfer_args ta; 1980 struct coro_transfer_args ta;
1652 1981
1653 prepare_cede (aTHX_ &ta); 1982 prepare_cede (aTHX_ &ta);
1654 1983
1655 if (expect_true (ta.prev != ta.next)) 1984 if (ecb_expect_true (ta.prev != ta.next))
1656 { 1985 {
1657 TRANSFER (ta, 1); 1986 TRANSFER (ta, 1);
1658 return 1; 1987 return 1;
1659 } 1988 }
1660 else 1989 else
… …
1679static void 2008static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 2009api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 2010{
1682 struct coro *coro = SvSTATE (coro_sv); 2011 struct coro *coro = SvSTATE (coro_sv);
1683 2012
2013 if (coro->flags & CF_RUNNING)
2014 croak ("cannot enable tracing on a running coroutine, caught");
2015
1684 if (flags & CC_TRACE) 2016 if (flags & CC_TRACE)
1685 { 2017 {
1686 if (!coro->cctx) 2018 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 2019 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 2020 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 2021 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 2022
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2023 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 2024 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2025 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 2026 {
… …
1699 else 2031 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 2032 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 2033 }
1702} 2034}
1703 2035
2036static void
2037coro_push_av (pTHX_ AV *av, I32 gimme_v)
2038{
2039 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2040 {
2041 dSP;
2042
2043 if (gimme_v == G_SCALAR)
2044 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2045 else
2046 {
2047 int i;
2048 EXTEND (SP, AvFILLp (av) + 1);
2049
2050 for (i = 0; i <= AvFILLp (av); ++i)
2051 PUSHs (AvARRAY (av)[i]);
2052 }
2053
2054 PUTBACK;
2055 }
2056}
2057
2058static void
2059coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2060{
2061 if (!coro->on_destroy)
2062 coro->on_destroy = newAV ();
2063
2064 av_push (coro->on_destroy, cb);
2065}
2066
2067static void
2068slf_destroy_join (pTHX_ struct CoroSLF *frame)
2069{
2070 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2071}
2072
2073static int
2074slf_check_join (pTHX_ struct CoroSLF *frame)
2075{
2076 struct coro *coro = (struct coro *)frame->data;
2077
2078 if (!coro->status)
2079 return 1;
2080
2081 frame->destroy = 0;
2082
2083 coro_push_av (aTHX_ coro->status, GIMME_V);
2084
2085 SvREFCNT_dec ((SV *)coro->hv);
2086
2087 return 0;
2088}
2089
2090static void
2091slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2092{
2093 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2094
2095 if (items > 1)
2096 croak ("join called with too many arguments");
2097
2098 if (coro->status)
2099 frame->prepare = prepare_nop;
2100 else
2101 {
2102 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2103 frame->prepare = prepare_schedule;
2104 }
2105
2106 frame->check = slf_check_join;
2107 frame->destroy = slf_destroy_join;
2108 frame->data = (void *)coro;
2109 SvREFCNT_inc (coro->hv);
2110}
2111
2112static void
2113coro_call_on_destroy (pTHX_ struct coro *coro)
2114{
2115 AV *od = coro->on_destroy;
2116
2117 if (!od)
2118 return;
2119
2120 while (AvFILLp (od) >= 0)
2121 {
2122 SV *cb = sv_2mortal (av_pop (od));
2123
2124 /* coro hv's (and only hv's at the moment) are supported as well */
2125 if (SvSTATEhv_p (aTHX_ cb))
2126 api_ready (aTHX_ cb);
2127 else
2128 {
2129 dSP; /* don't disturb outer sp */
2130 PUSHMARK (SP);
2131
2132 if (coro->status)
2133 {
2134 PUTBACK;
2135 coro_push_av (aTHX_ coro->status, G_ARRAY);
2136 SPAGAIN;
2137 }
2138
2139 PUTBACK;
2140 call_sv (cb, G_VOID | G_DISCARD);
2141 }
2142 }
2143}
2144
2145static void
2146coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2147{
2148 AV *av;
2149
2150 if (coro->status)
2151 {
2152 av = coro->status;
2153 av_clear (av);
2154 }
2155 else
2156 av = coro->status = newAV ();
2157
2158 /* items are actually not so common, so optimise for this case */
2159 if (items)
2160 {
2161 int i;
2162
2163 av_extend (av, items - 1);
2164
2165 for (i = 0; i < items; ++i)
2166 av_push (av, SvREFCNT_inc_NN (arg [i]));
2167 }
2168}
2169
2170static void
2171slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2172{
2173 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2174 api_ready (aTHX_ sv_manager);
2175
2176 frame->prepare = prepare_schedule;
2177 frame->check = slf_check_repeat;
2178
2179 /* as a minor optimisation, we could unwind all stacks here */
2180 /* but that puts extra pressure on pp_slf, and is not worth much */
2181 /*coro_unwind_stacks (aTHX);*/
2182}
2183
2184static void
2185slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2186{
2187 HV *coro_hv = (HV *)SvRV (coro_current);
2188
2189 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2190 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2191}
2192
2193static void
2194slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2195{
2196 HV *coro_hv;
2197 struct coro *coro;
2198
2199 if (items <= 0)
2200 croak ("Coro::cancel called without coro object,");
2201
2202 coro = SvSTATE (arg [0]);
2203 coro_hv = coro->hv;
2204
2205 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2206
2207 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2208 {
2209 /* coro currently busy cancelling something, so just notify it */
2210 coro->slf_frame.data = (void *)coro;
2211
2212 frame->prepare = prepare_nop;
2213 frame->check = slf_check_nop;
2214 }
2215 else if (coro_hv == (HV *)SvRV (coro_current))
2216 {
2217 /* cancelling the current coro is allowed, and equals terminate */
2218 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2219 }
2220 else
2221 {
2222 struct coro *self = SvSTATE_current;
2223
2224 /* otherwise we cancel directly, purely for speed reasons
2225 * unfortunately, this requires some magic trickery, as
2226 * somebody else could cancel us, so we have to fight the cancellation.
2227 * this is ugly, and hopefully fully worth the extra speed.
2228 * besides, I can't get the slow-but-safe version working...
2229 */
2230 slf_frame.data = 0;
2231 self->flags |= CF_NOCANCEL;
2232 coro_state_destroy (aTHX_ coro);
2233 self->flags &= ~CF_NOCANCEL;
2234
2235 if (slf_frame.data)
2236 {
2237 /* while we were busy we have been cancelled, so terminate */
2238 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2239 }
2240 else
2241 {
2242 frame->prepare = prepare_nop;
2243 frame->check = slf_check_nop;
2244 }
2245 }
2246}
2247
2248static int
2249slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2250{
2251 frame->prepare = 0;
2252 coro_unwind_stacks (aTHX);
2253
2254 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2255
2256 return 1;
2257}
2258
2259static int
2260safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2261{
2262 if (coro->cctx)
2263 croak ("coro inside C callback, unable to cancel at this time, caught");
2264
2265 if (coro->flags & CF_NEW)
2266 {
2267 coro_set_status (aTHX_ coro, arg, items);
2268 coro_state_destroy (aTHX_ coro);
2269 }
2270 else
2271 {
2272 if (!coro->slf_frame.prepare)
2273 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2274
2275 slf_destroy (aTHX_ coro);
2276
2277 coro_set_status (aTHX_ coro, arg, items);
2278 coro->slf_frame.prepare = prepare_nop;
2279 coro->slf_frame.check = slf_check_safe_cancel;
2280
2281 api_ready (aTHX_ (SV *)coro->hv);
2282 }
2283
2284 return 1;
2285}
2286
2287/*****************************************************************************/
2288/* async pool handler */
2289
2290static int
2291slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2292{
2293 HV *hv = (HV *)SvRV (coro_current);
2294 struct coro *coro = (struct coro *)frame->data;
2295
2296 if (!coro->invoke_cb)
2297 return 1; /* loop till we have invoke */
2298 else
2299 {
2300 hv_store (hv, "desc", sizeof ("desc") - 1,
2301 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2302
2303 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2304
2305 {
2306 dSP;
2307 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2308 PUTBACK;
2309 }
2310
2311 SvREFCNT_dec (GvAV (PL_defgv));
2312 GvAV (PL_defgv) = coro->invoke_av;
2313 coro->invoke_av = 0;
2314
2315 return 0;
2316 }
2317}
2318
2319static void
2320slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2321{
2322 HV *hv = (HV *)SvRV (coro_current);
2323 struct coro *coro = SvSTATE_hv ((SV *)hv);
2324
2325 if (ecb_expect_true (coro->saved_deffh))
2326 {
2327 /* subsequent iteration */
2328 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2329 coro->saved_deffh = 0;
2330
2331 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2332 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2333 {
2334 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2335 return;
2336 }
2337 else
2338 {
2339 av_clear (GvAV (PL_defgv));
2340 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2341
2342 coro->prio = 0;
2343
2344 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2345 api_trace (aTHX_ coro_current, 0);
2346
2347 frame->prepare = prepare_schedule;
2348 av_push (av_async_pool, SvREFCNT_inc (hv));
2349 }
2350 }
2351 else
2352 {
2353 /* first iteration, simply fall through */
2354 frame->prepare = prepare_nop;
2355 }
2356
2357 frame->check = slf_check_pool_handler;
2358 frame->data = (void *)coro;
2359}
2360
2361/*****************************************************************************/
2362/* rouse callback */
2363
2364#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2365
2366static void
2367coro_rouse_callback (pTHX_ CV *cv)
2368{
2369 dXSARGS;
2370 SV *data = (SV *)S_GENSUB_ARG;
2371
2372 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2373 {
2374 /* first call, set args */
2375 SV *coro = SvRV (data);
2376 AV *av = newAV ();
2377
2378 SvRV_set (data, (SV *)av);
2379
2380 /* better take a full copy of the arguments */
2381 while (items--)
2382 av_store (av, items, newSVsv (ST (items)));
2383
2384 api_ready (aTHX_ coro);
2385 SvREFCNT_dec (coro);
2386 }
2387
2388 XSRETURN_EMPTY;
2389}
2390
2391static int
2392slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2393{
2394 SV *data = (SV *)frame->data;
2395
2396 if (CORO_THROW)
2397 return 0;
2398
2399 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2400 return 1;
2401
2402 /* now push all results on the stack */
2403 {
2404 dSP;
2405 AV *av = (AV *)SvRV (data);
2406 int i;
2407
2408 EXTEND (SP, AvFILLp (av) + 1);
2409 for (i = 0; i <= AvFILLp (av); ++i)
2410 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2411
2412 /* we have stolen the elements, so set length to zero and free */
2413 AvFILLp (av) = -1;
2414 av_undef (av);
2415
2416 PUTBACK;
2417 }
2418
2419 return 0;
2420}
2421
2422static void
2423slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2424{
2425 SV *cb;
2426
2427 if (items)
2428 cb = arg [0];
2429 else
2430 {
2431 struct coro *coro = SvSTATE_current;
2432
2433 if (!coro->rouse_cb)
2434 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2435
2436 cb = sv_2mortal (coro->rouse_cb);
2437 coro->rouse_cb = 0;
2438 }
2439
2440 if (!SvROK (cb)
2441 || SvTYPE (SvRV (cb)) != SVt_PVCV
2442 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2443 croak ("Coro::rouse_wait called with illegal callback argument,");
2444
2445 {
2446 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2447 SV *data = (SV *)S_GENSUB_ARG;
2448
2449 frame->data = (void *)data;
2450 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2451 frame->check = slf_check_rouse_wait;
2452 }
2453}
2454
2455static SV *
2456coro_new_rouse_cb (pTHX)
2457{
2458 HV *hv = (HV *)SvRV (coro_current);
2459 struct coro *coro = SvSTATE_hv (hv);
2460 SV *data = newRV_inc ((SV *)hv);
2461 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2462
2463 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2464 SvREFCNT_dec (data); /* magicext increases the refcount */
2465
2466 SvREFCNT_dec (coro->rouse_cb);
2467 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2468
2469 return cb;
2470}
2471
2472/*****************************************************************************/
2473/* schedule-like-function opcode (SLF) */
2474
2475static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2476static const CV *slf_cv;
2477static SV **slf_argv;
2478static int slf_argc, slf_arga; /* count, allocated */
2479static I32 slf_ax; /* top of stack, for restore */
2480
2481/* this restores the stack in the case we patched the entersub, to */
2482/* recreate the stack frame as perl will on following calls */
2483/* since entersub cleared the stack */
2484static OP *
2485pp_restore (pTHX)
2486{
2487 int i;
2488 SV **SP = PL_stack_base + slf_ax;
2489
2490 PUSHMARK (SP);
2491
2492 EXTEND (SP, slf_argc + 1);
2493
2494 for (i = 0; i < slf_argc; ++i)
2495 PUSHs (sv_2mortal (slf_argv [i]));
2496
2497 PUSHs ((SV *)CvGV (slf_cv));
2498
2499 RETURNOP (slf_restore.op_first);
2500}
2501
2502static void
2503slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2504{
2505 SV **arg = (SV **)slf_frame.data;
2506
2507 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2508}
2509
2510static void
2511slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2512{
2513 if (items != 2)
2514 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2515
2516 frame->prepare = slf_prepare_transfer;
2517 frame->check = slf_check_nop;
2518 frame->data = (void *)arg; /* let's hope it will stay valid */
2519}
2520
2521static void
2522slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2523{
2524 frame->prepare = prepare_schedule;
2525 frame->check = slf_check_nop;
2526}
2527
2528static void
2529slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2530{
2531 struct coro *next = (struct coro *)slf_frame.data;
2532
2533 SvREFCNT_inc_NN (next->hv);
2534 prepare_schedule_to (aTHX_ ta, next);
2535}
2536
2537static void
2538slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2539{
2540 if (!items)
2541 croak ("Coro::schedule_to expects a coroutine argument, caught");
2542
2543 frame->data = (void *)SvSTATE (arg [0]);
2544 frame->prepare = slf_prepare_schedule_to;
2545 frame->check = slf_check_nop;
2546}
2547
2548static void
2549slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2550{
2551 api_ready (aTHX_ SvRV (coro_current));
2552
2553 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2554}
2555
2556static void
2557slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2558{
2559 frame->prepare = prepare_cede;
2560 frame->check = slf_check_nop;
2561}
2562
2563static void
2564slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2565{
2566 frame->prepare = prepare_cede_notself;
2567 frame->check = slf_check_nop;
2568}
2569
2570/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2571static void
2572slf_destroy (pTHX_ struct coro *coro)
2573{
2574 /* this callback is reserved for slf functions needing to do cleanup */
2575 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2576 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2577
2578 /*
2579 * The on_destroy above most likely is from an SLF call.
2580 * Since by definition the SLF call will not finish when we destroy
2581 * the coro, we will have to force-finish it here, otherwise
2582 * cleanup functions cannot call SLF functions.
2583 */
2584 coro->slf_frame.prepare = 0;
2585}
2586
2587/*
2588 * these not obviously related functions are all rolled into one
2589 * function to increase chances that they all will call transfer with the same
2590 * stack offset
2591 * SLF stands for "schedule-like-function".
2592 */
2593static OP *
2594pp_slf (pTHX)
2595{
2596 I32 checkmark; /* mark SP to see how many elements check has pushed */
2597
2598 /* set up the slf frame, unless it has already been set-up */
2599 /* the latter happens when a new coro has been started */
2600 /* or when a new cctx was attached to an existing coroutine */
2601 if (ecb_expect_true (!slf_frame.prepare))
2602 {
2603 /* first iteration */
2604 dSP;
2605 SV **arg = PL_stack_base + TOPMARK + 1;
2606 int items = SP - arg; /* args without function object */
2607 SV *gv = *sp;
2608
2609 /* do a quick consistency check on the "function" object, and if it isn't */
2610 /* for us, divert to the real entersub */
2611 if (SvTYPE (gv) != SVt_PVGV
2612 || !GvCV (gv)
2613 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2614 return PL_ppaddr[OP_ENTERSUB](aTHX);
2615
2616 if (!(PL_op->op_flags & OPf_STACKED))
2617 {
2618 /* ampersand-form of call, use @_ instead of stack */
2619 AV *av = GvAV (PL_defgv);
2620 arg = AvARRAY (av);
2621 items = AvFILLp (av) + 1;
2622 }
2623
2624 /* now call the init function, which needs to set up slf_frame */
2625 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2626 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2627
2628 /* pop args */
2629 SP = PL_stack_base + POPMARK;
2630
2631 PUTBACK;
2632 }
2633
2634 /* now that we have a slf_frame, interpret it! */
2635 /* we use a callback system not to make the code needlessly */
2636 /* complicated, but so we can run multiple perl coros from one cctx */
2637
2638 do
2639 {
2640 struct coro_transfer_args ta;
2641
2642 slf_frame.prepare (aTHX_ &ta);
2643 TRANSFER (ta, 0);
2644
2645 checkmark = PL_stack_sp - PL_stack_base;
2646 }
2647 while (slf_frame.check (aTHX_ &slf_frame));
2648
2649 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2650
2651 /* exception handling */
2652 if (ecb_expect_false (CORO_THROW))
2653 {
2654 SV *exception = sv_2mortal (CORO_THROW);
2655
2656 CORO_THROW = 0;
2657 sv_setsv (ERRSV, exception);
2658 croak (0);
2659 }
2660
2661 /* return value handling - mostly like entersub */
2662 /* make sure we put something on the stack in scalar context */
2663 if (GIMME_V == G_SCALAR
2664 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2665 {
2666 dSP;
2667 SV **bot = PL_stack_base + checkmark;
2668
2669 if (sp == bot) /* too few, push undef */
2670 bot [1] = &PL_sv_undef;
2671 else /* too many, take last one */
2672 bot [1] = *sp;
2673
2674 SP = bot + 1;
2675
2676 PUTBACK;
2677 }
2678
2679 return NORMAL;
2680}
2681
2682static void
2683api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2684{
2685 int i;
2686 SV **arg = PL_stack_base + ax;
2687 int items = PL_stack_sp - arg + 1;
2688
2689 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2690
2691 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2692 && PL_op->op_ppaddr != pp_slf)
2693 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2694
2695 CvFLAGS (cv) |= CVf_SLF;
2696 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2697 slf_cv = cv;
2698
2699 /* we patch the op, and then re-run the whole call */
2700 /* we have to put the same argument on the stack for this to work */
2701 /* and this will be done by pp_restore */
2702 slf_restore.op_next = (OP *)&slf_restore;
2703 slf_restore.op_type = OP_CUSTOM;
2704 slf_restore.op_ppaddr = pp_restore;
2705 slf_restore.op_first = PL_op;
2706
2707 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2708
2709 if (PL_op->op_flags & OPf_STACKED)
2710 {
2711 if (items > slf_arga)
2712 {
2713 slf_arga = items;
2714 Safefree (slf_argv);
2715 New (0, slf_argv, slf_arga, SV *);
2716 }
2717
2718 slf_argc = items;
2719
2720 for (i = 0; i < items; ++i)
2721 slf_argv [i] = SvREFCNT_inc (arg [i]);
2722 }
2723 else
2724 slf_argc = 0;
2725
2726 PL_op->op_ppaddr = pp_slf;
2727 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2728
2729 PL_op = (OP *)&slf_restore;
2730}
2731
2732/*****************************************************************************/
2733/* dynamic wind */
2734
2735static void
2736on_enterleave_call (pTHX_ SV *cb)
2737{
2738 dSP;
2739
2740 PUSHSTACK;
2741
2742 PUSHMARK (SP);
2743 PUTBACK;
2744 call_sv (cb, G_VOID | G_DISCARD);
2745 SPAGAIN;
2746
2747 POPSTACK;
2748}
2749
2750static SV *
2751coro_avp_pop_and_free (pTHX_ AV **avp)
2752{
2753 AV *av = *avp;
2754 SV *res = av_pop (av);
2755
2756 if (AvFILLp (av) < 0)
2757 {
2758 *avp = 0;
2759 SvREFCNT_dec (av);
2760 }
2761
2762 return res;
2763}
2764
2765static void
2766coro_pop_on_enter (pTHX_ void *coro)
2767{
2768 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2769 SvREFCNT_dec (cb);
2770}
2771
2772static void
2773coro_pop_on_leave (pTHX_ void *coro)
2774{
2775 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2776 on_enterleave_call (aTHX_ sv_2mortal (cb));
2777}
2778
1704/*****************************************************************************/ 2779/*****************************************************************************/
1705/* PerlIO::cede */ 2780/* PerlIO::cede */
1706 2781
1707typedef struct 2782typedef struct
1708{ 2783{
1709 PerlIOBuf base; 2784 PerlIOBuf base;
1710 NV next, every; 2785 NV next, every;
1711} PerlIOCede; 2786} PerlIOCede;
1712 2787
1713static IV 2788static IV ecb_cold
1714PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2789PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1715{ 2790{
1716 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1717 2792
1718 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2793 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1719 self->next = nvtime () + self->every; 2794 self->next = nvtime () + self->every;
1720 2795
1721 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2796 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1722} 2797}
1723 2798
1724static SV * 2799static SV * ecb_cold
1725PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2800PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1726{ 2801{
1727 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2802 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1728 2803
1729 return newSVnv (self->every); 2804 return newSVnv (self->every);
… …
1775 PerlIOBuf_get_cnt, 2850 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 2851 PerlIOBuf_set_ptrcnt,
1777}; 2852};
1778 2853
1779/*****************************************************************************/ 2854/*****************************************************************************/
2855/* Coro::Semaphore & Coro::Signal */
1780 2856
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 2857static SV *
1791pp_restore (pTHX) 2858coro_waitarray_new (pTHX_ int count)
1792{ 2859{
1793 int i; 2860 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 2861 AV *av = newAV ();
2862 SV **ary;
1795 2863
1796 PUSHMARK (SP); 2864 /* unfortunately, building manually saves memory */
2865 Newx (ary, 2, SV *);
2866 AvALLOC (av) = ary;
2867#if PERL_VERSION_ATLEAST (5,10,0)
2868 AvARRAY (av) = ary;
2869#else
2870 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2871 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2872 SvPVX ((SV *)av) = (char *)ary;
2873#endif
2874 AvMAX (av) = 1;
2875 AvFILLp (av) = 0;
2876 ary [0] = newSViv (count);
1797 2877
1798 EXTEND (SP, slf_argc + 1); 2878 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 2879}
1807 2880
1808static void 2881/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006 2882
2007static void 2883static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2884coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{ 2885{
2010 SV *count_sv = AvARRAY (av)[0]; 2886 SV *count_sv = AvARRAY (av)[0];
… …
2022 AvARRAY (av)[0] = AvARRAY (av)[1]; 2898 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv; 2899 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av); 2900 cb = av_shift (av);
2025 2901
2026 if (SvOBJECT (cb)) 2902 if (SvOBJECT (cb))
2903 {
2027 api_ready (aTHX_ cb); 2904 api_ready (aTHX_ cb);
2028 else 2905 --count;
2029 croak ("callbacks not yet supported"); 2906 }
2907 else if (SvTYPE (cb) == SVt_PVCV)
2908 {
2909 dSP;
2910 PUSHMARK (SP);
2911 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2912 PUTBACK;
2913 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2914 }
2030 2915
2031 SvREFCNT_dec (cb); 2916 SvREFCNT_dec (cb);
2032
2033 --count;
2034 } 2917 }
2035} 2918}
2036 2919
2037static void 2920static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2921coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2039{ 2922{
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2923 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2924 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2042} 2925}
2043 2926
2044static int 2927static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2928slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2046{ 2929{
2047 AV *av = (AV *)frame->data; 2930 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0]; 2931 SV *count_sv = AvARRAY (av)[0];
2932 SV *coro_hv = SvRV (coro_current);
2049 2933
2934 /* if we are about to throw, don't actually acquire the lock, just throw */
2935 if (CORO_THROW)
2936 return 0;
2050 if (SvIVX (count_sv) > 0) 2937 else if (SvIVX (count_sv) > 0)
2051 { 2938 {
2052 SvSTATE_current->on_destroy = 0; 2939 frame->destroy = 0;
2940
2941 if (acquire)
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2942 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2943 else
2944 coro_semaphore_adjust (aTHX_ av, 0);
2945
2054 return 0; 2946 return 0;
2055 } 2947 }
2056 else 2948 else
2057 { 2949 {
2058 int i; 2950 int i;
2059 /* if we were woken up but can't down, we look through the whole */ 2951 /* if we were woken up but can't down, we look through the whole */
2060 /* waiters list and only add us if we aren't in there already */ 2952 /* waiters list and only add us if we aren't in there already */
2061 /* this avoids some degenerate memory usage cases */ 2953 /* this avoids some degenerate memory usage cases */
2062 2954 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2063 for (i = 1; i <= AvFILLp (av); ++i)
2064 if (AvARRAY (av)[i] == SvRV (coro_current)) 2955 if (AvARRAY (av)[i] == coro_hv)
2065 return 1; 2956 return 1;
2066 2957
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2958 av_push (av, SvREFCNT_inc (coro_hv));
2068 return 1; 2959 return 1;
2069 } 2960 }
2070} 2961}
2071 2962
2072static void 2963static int
2964slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2965{
2966 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2967}
2968
2969static int
2970slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2971{
2972 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2973}
2974
2975static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2976slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{ 2977{
2075 AV *av = (AV *)SvRV (arg [0]); 2978 AV *av = (AV *)SvRV (arg [0]);
2076 2979
2077 if (SvIVX (AvARRAY (av)[0]) > 0) 2980 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 { 2981 {
2079 frame->data = (void *)av; 2982 frame->data = (void *)av;
2080 frame->prepare = prepare_nop; 2983 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 } 2984 }
2083 else 2985 else
2084 { 2986 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2987 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086 2988
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2989 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule; 2990 frame->prepare = prepare_schedule;
2089
2090 /* to avoid race conditions when a woken-up coro gets terminated */ 2991 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2992 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2993 frame->destroy = coro_semaphore_destroy;
2094 } 2994 }
2995}
2095 2996
2997static void
2998slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2999{
3000 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2096 frame->check = slf_check_semaphore_down; 3001 frame->check = slf_check_semaphore_down;
3002}
2097 3003
3004static void
3005slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3006{
3007 if (items >= 2)
3008 {
3009 /* callback form */
3010 AV *av = (AV *)SvRV (arg [0]);
3011 SV *cb_cv = s_get_cv_croak (arg [1]);
3012
3013 av_push (av, SvREFCNT_inc_NN (cb_cv));
3014
3015 if (SvIVX (AvARRAY (av)[0]) > 0)
3016 coro_semaphore_adjust (aTHX_ av, 0);
3017
3018 frame->prepare = prepare_nop;
3019 frame->check = slf_check_nop;
3020 }
3021 else
3022 {
3023 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3024 frame->check = slf_check_semaphore_wait;
3025 }
3026}
3027
3028/* signal */
3029
3030static void
3031coro_signal_wake (pTHX_ AV *av, int count)
3032{
3033 SvIVX (AvARRAY (av)[0]) = 0;
3034
3035 /* now signal count waiters */
3036 while (count > 0 && AvFILLp (av) > 0)
3037 {
3038 SV *cb;
3039
3040 /* swap first two elements so we can shift a waiter */
3041 cb = AvARRAY (av)[0];
3042 AvARRAY (av)[0] = AvARRAY (av)[1];
3043 AvARRAY (av)[1] = cb;
3044
3045 cb = av_shift (av);
3046
3047 if (SvTYPE (cb) == SVt_PVCV)
3048 {
3049 dSP;
3050 PUSHMARK (SP);
3051 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3052 PUTBACK;
3053 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3054 }
3055 else
3056 {
3057 api_ready (aTHX_ cb);
3058 sv_setiv (cb, 0); /* signal waiter */
3059 }
3060
3061 SvREFCNT_dec (cb);
3062
3063 --count;
3064 }
3065}
3066
3067static int
3068slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3069{
3070 /* if we are about to throw, also stop waiting */
3071 return SvROK ((SV *)frame->data) && !CORO_THROW;
3072}
3073
3074static void
3075slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3076{
3077 AV *av = (AV *)SvRV (arg [0]);
3078
3079 if (items >= 2)
3080 {
3081 SV *cb_cv = s_get_cv_croak (arg [1]);
3082 av_push (av, SvREFCNT_inc_NN (cb_cv));
3083
3084 if (SvIVX (AvARRAY (av)[0]))
3085 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3086
3087 frame->prepare = prepare_nop;
3088 frame->check = slf_check_nop;
3089 }
3090 else if (SvIVX (AvARRAY (av)[0]))
3091 {
3092 SvIVX (AvARRAY (av)[0]) = 0;
3093 frame->prepare = prepare_nop;
3094 frame->check = slf_check_nop;
3095 }
3096 else
3097 {
3098 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3099
3100 av_push (av, waiter);
3101
3102 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3103 frame->prepare = prepare_schedule;
3104 frame->check = slf_check_signal_wait;
3105 }
2098} 3106}
2099 3107
2100/*****************************************************************************/ 3108/*****************************************************************************/
3109/* Coro::AIO */
2101 3110
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3111#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2103 3112
2104/* create a closure from XS, returns a code reference */ 3113/* helper storage struct */
2105/* the arg can be accessed via GENSUB_ARG from the callback */ 3114struct io_state
2106/* the callback must use dXSARGS/XSRETURN */ 3115{
3116 int errorno;
3117 I32 laststype; /* U16 in 5.10.0 */
3118 int laststatval;
3119 Stat_t statcache;
3120};
3121
3122static void
3123coro_aio_callback (pTHX_ CV *cv)
3124{
3125 dXSARGS;
3126 AV *state = (AV *)S_GENSUB_ARG;
3127 SV *coro = av_pop (state);
3128 SV *data_sv = newSV (sizeof (struct io_state));
3129
3130 av_extend (state, items - 1);
3131
3132 sv_upgrade (data_sv, SVt_PV);
3133 SvCUR_set (data_sv, sizeof (struct io_state));
3134 SvPOK_only (data_sv);
3135
3136 {
3137 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3138
3139 data->errorno = errno;
3140 data->laststype = PL_laststype;
3141 data->laststatval = PL_laststatval;
3142 data->statcache = PL_statcache;
3143 }
3144
3145 /* now build the result vector out of all the parameters and the data_sv */
3146 {
3147 int i;
3148
3149 for (i = 0; i < items; ++i)
3150 av_push (state, SvREFCNT_inc_NN (ST (i)));
3151 }
3152
3153 av_push (state, data_sv);
3154
3155 api_ready (aTHX_ coro);
3156 SvREFCNT_dec (coro);
3157 SvREFCNT_dec ((AV *)state);
3158}
3159
3160static int
3161slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3162{
3163 AV *state = (AV *)frame->data;
3164
3165 /* if we are about to throw, return early */
3166 /* this does not cancel the aio request, but at least */
3167 /* it quickly returns */
3168 if (CORO_THROW)
3169 return 0;
3170
3171 /* one element that is an RV? repeat! */
3172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3173 return 1;
3174
3175 /* restore status */
3176 {
3177 SV *data_sv = av_pop (state);
3178 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3179
3180 errno = data->errorno;
3181 PL_laststype = data->laststype;
3182 PL_laststatval = data->laststatval;
3183 PL_statcache = data->statcache;
3184
3185 SvREFCNT_dec (data_sv);
3186 }
3187
3188 /* push result values */
3189 {
3190 dSP;
3191 int i;
3192
3193 EXTEND (SP, AvFILLp (state) + 1);
3194 for (i = 0; i <= AvFILLp (state); ++i)
3195 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3196
3197 PUTBACK;
3198 }
3199
3200 return 0;
3201}
3202
3203static void
3204slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3205{
3206 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3207 SV *coro_hv = SvRV (coro_current);
3208 struct coro *coro = SvSTATE_hv (coro_hv);
3209
3210 /* put our coroutine id on the state arg */
3211 av_push (state, SvREFCNT_inc_NN (coro_hv));
3212
3213 /* first see whether we have a non-zero priority and set it as AIO prio */
3214 if (coro->prio)
3215 {
3216 dSP;
3217
3218 static SV *prio_cv;
3219 static SV *prio_sv;
3220
3221 if (ecb_expect_false (!prio_cv))
3222 {
3223 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3224 prio_sv = newSViv (0);
3225 }
3226
3227 PUSHMARK (SP);
3228 sv_setiv (prio_sv, coro->prio);
3229 XPUSHs (prio_sv);
3230
3231 PUTBACK;
3232 call_sv (prio_cv, G_VOID | G_DISCARD);
3233 }
3234
3235 /* now call the original request */
3236 {
3237 dSP;
3238 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3239 int i;
3240
3241 PUSHMARK (SP);
3242
3243 /* first push all args to the stack */
3244 EXTEND (SP, items + 1);
3245
3246 for (i = 0; i < items; ++i)
3247 PUSHs (arg [i]);
3248
3249 /* now push the callback closure */
3250 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3251
3252 /* now call the AIO function - we assume our request is uncancelable */
3253 PUTBACK;
3254 call_sv ((SV *)req, G_VOID | G_DISCARD);
3255 }
3256
3257 /* now that the request is going, we loop till we have a result */
3258 frame->data = (void *)state;
3259 frame->prepare = prepare_schedule;
3260 frame->check = slf_check_aio_req;
3261}
3262
3263static void
3264coro_aio_req_xs (pTHX_ CV *cv)
3265{
3266 dXSARGS;
3267
3268 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3269
3270 XSRETURN_EMPTY;
3271}
3272
3273/*****************************************************************************/
3274
3275#if CORO_CLONE
3276# include "clone.c"
3277#endif
3278
3279/*****************************************************************************/
3280
2107static SV * 3281static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3282coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2109{ 3283{
2110 CV *cv = (CV *)NEWSV (0, 0); 3284 SV *coro_sv;
3285 struct coro *coro;
3286 MAGIC *mg;
3287 HV *hv;
3288 SV *cb;
3289 int i;
2111 3290
2112 sv_upgrade ((SV *)cv, SVt_PVCV); 3291 if (argc > 0)
3292 {
3293 cb = s_get_cv_croak (argv [0]);
2113 3294
2114 CvANON_on (cv); 3295 if (!is_coro)
2115 CvISXSUB_on (cv); 3296 {
2116 CvXSUB (cv) = xsub; 3297 if (CvISXSUB (cb))
2117 GENSUB_ARG = arg; 3298 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2118 3299
2119 return newRV_noinc ((SV *)cv); 3300 if (!CvROOT (cb))
2120} 3301 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3302 }
3303 }
2121 3304
2122/*****************************************************************************/ 3305 Newz (0, coro, 1, struct coro);
3306 coro->args = newAV ();
3307 coro->flags = CF_NEW;
3308
3309 if (coro_first) coro_first->prev = coro;
3310 coro->next = coro_first;
3311 coro_first = coro;
3312
3313 coro->hv = hv = newHV ();
3314 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3315 mg->mg_flags |= MGf_DUP;
3316 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3317
3318 if (argc > 0)
3319 {
3320 av_extend (coro->args, argc + is_coro - 1);
3321
3322 if (is_coro)
3323 {
3324 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3325 cb = (SV *)cv_coro_run;
3326 }
3327
3328 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3329
3330 for (i = 1; i < argc; i++)
3331 av_push (coro->args, newSVsv (argv [i]));
3332 }
3333
3334 return coro_sv;
3335}
3336
3337#ifndef __cplusplus
3338ecb_cold XS(boot_Coro__State);
3339#endif
3340
3341#if CORO_JIT
3342
3343static void ecb_noinline ecb_cold
3344pushav_3uv (pTHX_ UV a, UV b, UV c)
3345{
3346 dSP;
3347 AV *av = newAV ();
3348
3349 av_store (av, 2, newSVuv (c));
3350 av_store (av, 1, newSVuv (b));
3351 av_store (av, 0, newSVuv (a));
3352
3353 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3354
3355 PUTBACK;
3356}
3357
3358static void ecb_noinline ecb_cold
3359jit_init (pTHX)
3360{
3361 dSP;
3362 SV *load, *save;
3363 char *map_base;
3364 char *load_ptr, *save_ptr;
3365 STRLEN load_len, save_len;
3366 int count;
3367
3368 PUSHMARK (SP);
3369 PUTBACK;
3370#define VARx(name,expr,type) pushav_3uv (aTHX_ (UV)&(expr), offsetof (perl_slots, name), sizeof (type));
3371# include "state.h"
3372#undef VARx
3373 count = call_pv ("Coro::State::_jit", G_ARRAY);
3374 SPAGAIN;
3375
3376 save = POPs; save_ptr = SvPVbyte (save, save_len);
3377 load = POPs; load_ptr = SvPVbyte (load, load_len);
3378
3379 map_base = mmap (0, load_len + save_len + 16, PROT_EXEC | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3380
3381 assert (("Coro: unable mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3382
3383 load_perl_slots = (load_save_perl_slots_type)map_base;
3384 memcpy (map_base, load_ptr, load_len);
3385
3386 map_base += (load_len + 15) & ~15;
3387
3388 save_perl_slots = (load_save_perl_slots_type)map_base;
3389 memcpy (map_base, save_ptr, save_len);
3390}
3391
3392#endif
2123 3393
2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3394MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2125 3395
2126PROTOTYPES: DISABLE 3396PROTOTYPES: DISABLE
2127 3397
… …
2132 coro_thx = PERL_GET_CONTEXT; 3402 coro_thx = PERL_GET_CONTEXT;
2133# endif 3403# endif
2134#endif 3404#endif
2135 BOOT_PAGESIZE; 3405 BOOT_PAGESIZE;
2136 3406
3407 /* perl defines these to check for existance first, but why it doesn't */
3408 /* just create them one at init time is not clear to me, except for */
3409 /* programs trying to delete them, but... */
3410 /* anyway, we declare this as invalid and make sure they are initialised here */
3411 DEFSV;
3412 ERRSV;
3413
3414 cctx_current = cctx_new_empty ();
3415
2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3416 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3417 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2139 3418
2140 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3419 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2141 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3420 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2160 3439
2161 { 3440 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3441 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163 3442
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3443 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf, 3444 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2166 newSVpv ("coro_slf", 0), 0);
2167 3445
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3446 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf, 3447 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2170 newSVpv ("coro schedule like function", 0), 0);
2171 } 3448 }
2172 3449
2173 coroapi.ver = CORO_API_VERSION; 3450 coroapi.ver = CORO_API_VERSION;
2174 coroapi.rev = CORO_API_REVISION; 3451 coroapi.rev = CORO_API_REVISION;
2175 3452
… …
2180 coroapi.prepare_nop = prepare_nop; 3457 coroapi.prepare_nop = prepare_nop;
2181 coroapi.prepare_schedule = prepare_schedule; 3458 coroapi.prepare_schedule = prepare_schedule;
2182 coroapi.prepare_cede = prepare_cede; 3459 coroapi.prepare_cede = prepare_cede;
2183 coroapi.prepare_cede_notself = prepare_cede_notself; 3460 coroapi.prepare_cede_notself = prepare_cede_notself;
2184 3461
2185 { 3462 time_init (aTHX);
2186 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2187 3463
2188 if (!svp) croak ("Time::HiRes is required");
2189 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2190
2191 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2192 }
2193
2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3464 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3465#if CORO_JIT
3466 PUTBACK;
3467 require_pv ("Coro/jit-" CORO_JIT_TYPE ".pl");
3468 jit_init (aTHX);
3469 perl_eval_pv ("undef &Coro::State::_jit", 1);
3470 SPAGAIN;
3471#endif
2195} 3472}
2196 3473
2197SV * 3474SV *
2198new (char *klass, ...) 3475new (SV *klass, ...)
3476 ALIAS:
3477 Coro::new = 1
2199 CODE: 3478 CODE:
2200{ 3479 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2201 struct coro *coro; 3480 OUTPUT:
2202 MAGIC *mg;
2203 HV *hv;
2204 int i;
2205
2206 Newz (0, coro, 1, struct coro);
2207 coro->args = newAV ();
2208 coro->flags = CF_NEW;
2209
2210 if (coro_first) coro_first->prev = coro;
2211 coro->next = coro_first;
2212 coro_first = coro;
2213
2214 coro->hv = hv = newHV ();
2215 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2216 mg->mg_flags |= MGf_DUP;
2217 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2218
2219 av_extend (coro->args, items - 1);
2220 for (i = 1; i < items; i++)
2221 av_push (coro->args, newSVsv (ST (i)));
2222}
2223 OUTPUT:
2224 RETVAL 3481 RETVAL
2225
2226void
2227_set_stacklevel (...)
2228 CODE:
2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2230 3482
2231void 3483void
2232transfer (...) 3484transfer (...)
2233 PROTOTYPE: $$ 3485 PROTOTYPE: $$
2234 CODE: 3486 CODE:
2235 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3487 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2236 3488
2237bool
2238_destroy (SV *coro_sv)
2239 CODE:
2240 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2241 OUTPUT:
2242 RETVAL
2243
2244void 3489void
2245_exit (int code) 3490_exit (int code)
2246 PROTOTYPE: $ 3491 PROTOTYPE: $
2247 CODE: 3492 CODE:
2248 _exit (code); 3493 _exit (code);
3494
3495SV *
3496clone (Coro::State coro)
3497 CODE:
3498{
3499#if CORO_CLONE
3500 struct coro *ncoro = coro_clone (aTHX_ coro);
3501 MAGIC *mg;
3502 /* TODO: too much duplication */
3503 ncoro->hv = newHV ();
3504 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3505 mg->mg_flags |= MGf_DUP;
3506 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3507#else
3508 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3509#endif
3510}
3511 OUTPUT:
3512 RETVAL
2249 3513
2250int 3514int
2251cctx_stacksize (int new_stacksize = 0) 3515cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$ 3516 PROTOTYPE: ;$
2253 CODE: 3517 CODE:
… …
2303 eval = 1 3567 eval = 1
2304 CODE: 3568 CODE:
2305{ 3569{
2306 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3570 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2307 { 3571 {
2308 struct coro temp; 3572 struct coro *current = SvSTATE_current;
3573 struct CoroSLF slf_save;
2309 3574
2310 if (!(coro->flags & CF_RUNNING)) 3575 if (current != coro)
2311 { 3576 {
2312 PUTBACK; 3577 PUTBACK;
2313 save_perl (aTHX_ &temp); 3578 save_perl (aTHX_ current);
2314 load_perl (aTHX_ coro); 3579 load_perl (aTHX_ coro);
3580 /* the coro is most likely in an active SLF call.
3581 * while not strictly required (the code we execute is
3582 * not allowed to call any SLF functions), it's cleaner
3583 * to reinitialise the slf_frame and restore it later.
3584 * This might one day allow us to actually do SLF calls
3585 * from code executed here.
3586 */
3587 slf_save = slf_frame;
3588 slf_frame.prepare = 0;
3589 SPAGAIN;
2315 } 3590 }
2316 3591
2317 {
2318 dSP;
2319 ENTER;
2320 SAVETMPS;
2321 PUTBACK;
2322 PUSHSTACK; 3592 PUSHSTACK;
3593
2323 PUSHMARK (SP); 3594 PUSHMARK (SP);
3595 PUTBACK;
2324 3596
2325 if (ix) 3597 if (ix)
2326 eval_sv (coderef, 0); 3598 eval_sv (coderef, 0);
2327 else 3599 else
2328 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3600 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2329 3601
2330 POPSTACK; 3602 POPSTACK;
2331 SPAGAIN; 3603 SPAGAIN;
2332 FREETMPS;
2333 LEAVE;
2334 PUTBACK;
2335 }
2336 3604
2337 if (!(coro->flags & CF_RUNNING)) 3605 if (current != coro)
2338 { 3606 {
3607 PUTBACK;
3608 slf_frame = slf_save;
2339 save_perl (aTHX_ coro); 3609 save_perl (aTHX_ coro);
2340 load_perl (aTHX_ &temp); 3610 load_perl (aTHX_ current);
2341 SPAGAIN; 3611 SPAGAIN;
2342 } 3612 }
2343 } 3613 }
2344} 3614}
2345 3615
… …
2348 PROTOTYPE: $ 3618 PROTOTYPE: $
2349 ALIAS: 3619 ALIAS:
2350 is_ready = CF_READY 3620 is_ready = CF_READY
2351 is_running = CF_RUNNING 3621 is_running = CF_RUNNING
2352 is_new = CF_NEW 3622 is_new = CF_NEW
2353 is_destroyed = CF_DESTROYED 3623 is_destroyed = CF_ZOMBIE
3624 is_zombie = CF_ZOMBIE
3625 is_suspended = CF_SUSPENDED
2354 CODE: 3626 CODE:
2355 RETVAL = boolSV (coro->flags & ix); 3627 RETVAL = boolSV (coro->flags & ix);
2356 OUTPUT: 3628 OUTPUT:
2357 RETVAL 3629 RETVAL
2358 3630
2359void 3631void
2360throw (Coro::State self, SV *throw = &PL_sv_undef) 3632throw (Coro::State self, SV *exception = &PL_sv_undef)
2361 PROTOTYPE: $;$ 3633 PROTOTYPE: $;$
2362 CODE: 3634 CODE:
2363{ 3635{
2364 struct coro *current = SvSTATE_current; 3636 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw; 3637 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2366 SvREFCNT_dec (*throwp); 3638 SvREFCNT_dec (*exceptionp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3639 SvGETMAGIC (exception);
3640 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2368} 3641}
2369 3642
2370void 3643void
2371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3644api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2372 PROTOTYPE: $;$ 3645 PROTOTYPE: $;$
… …
2374 3647
2375SV * 3648SV *
2376has_cctx (Coro::State coro) 3649has_cctx (Coro::State coro)
2377 PROTOTYPE: $ 3650 PROTOTYPE: $
2378 CODE: 3651 CODE:
2379 RETVAL = boolSV (!!coro->cctx); 3652 /* maybe manage the running flag differently */
3653 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2380 OUTPUT: 3654 OUTPUT:
2381 RETVAL 3655 RETVAL
2382 3656
2383int 3657int
2384is_traced (Coro::State coro) 3658is_traced (Coro::State coro)
… …
2404 3678
2405void 3679void
2406force_cctx () 3680force_cctx ()
2407 PROTOTYPE: 3681 PROTOTYPE:
2408 CODE: 3682 CODE:
2409 SvSTATE_current->cctx->idle_sp = 0; 3683 cctx_current->idle_sp = 0;
2410 3684
2411void 3685void
2412swap_defsv (Coro::State self) 3686swap_defsv (Coro::State self)
2413 PROTOTYPE: $ 3687 PROTOTYPE: $
2414 ALIAS: 3688 ALIAS:
… …
2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3696 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2423 3697
2424 SV *tmp = *src; *src = *dst; *dst = tmp; 3698 SV *tmp = *src; *src = *dst; *dst = tmp;
2425 } 3699 }
2426 3700
3701void
3702cancel (Coro::State self)
3703 CODE:
3704 coro_state_destroy (aTHX_ self);
3705
3706SV *
3707enable_times (int enabled = enable_times)
3708 CODE:
3709{
3710 RETVAL = boolSV (enable_times);
3711
3712 if (enabled != enable_times)
3713 {
3714 enable_times = enabled;
3715
3716 coro_times_update ();
3717 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3718 }
3719}
3720 OUTPUT:
3721 RETVAL
3722
3723void
3724times (Coro::State self)
3725 PPCODE:
3726{
3727 struct coro *current = SvSTATE (coro_current);
3728
3729 if (ecb_expect_false (current == self))
3730 {
3731 coro_times_update ();
3732 coro_times_add (SvSTATE (coro_current));
3733 }
3734
3735 EXTEND (SP, 2);
3736 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3737 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3738
3739 if (ecb_expect_false (current == self))
3740 coro_times_sub (SvSTATE (coro_current));
3741}
3742
3743void
3744swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3745 CODE:
3746{
3747 struct coro *current = SvSTATE_current;
3748
3749 if (current == coro)
3750 SWAP_SVS (current);
3751
3752 if (!coro->swap_sv)
3753 coro->swap_sv = newAV ();
3754
3755 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3756 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3757
3758 if (current == coro)
3759 SWAP_SVS (current);
3760}
3761
3762
2427MODULE = Coro::State PACKAGE = Coro 3763MODULE = Coro::State PACKAGE = Coro
2428 3764
2429BOOT: 3765BOOT:
2430{ 3766{
2431 int i;
2432
2433 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2434 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3767 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2435 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3768 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2436 3769 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2437 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3770 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2438 SvREADONLY_on (coro_current); 3771 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3772 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3773 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3774 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2439 3775
3776 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3777 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3778 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3779 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3780
2440 coro_stash = gv_stashpv ("Coro", TRUE); 3781 coro_stash = gv_stashpv ("Coro", TRUE);
2441 3782
2442 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3783 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2443 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3784 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2444 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3785 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2445 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3786 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2446 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3787 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2447 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3788 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2448
2449 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2450 coro_ready[i] = newAV ();
2451 3789
2452 { 3790 {
2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3791 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2454 3792
2455 coroapi.schedule = api_schedule; 3793 coroapi.schedule = api_schedule;
3794 coroapi.schedule_to = api_schedule_to;
2456 coroapi.cede = api_cede; 3795 coroapi.cede = api_cede;
2457 coroapi.cede_notself = api_cede_notself; 3796 coroapi.cede_notself = api_cede_notself;
2458 coroapi.ready = api_ready; 3797 coroapi.ready = api_ready;
2459 coroapi.is_ready = api_is_ready; 3798 coroapi.is_ready = api_is_ready;
2460 coroapi.nready = coro_nready; 3799 coroapi.nready = coro_nready;
2461 coroapi.current = coro_current; 3800 coroapi.current = coro_current;
2462 3801
2463 GCoroAPI = &coroapi; 3802 /*GCoroAPI = &coroapi;*/
2464 sv_setiv (sv, (IV)&coroapi); 3803 sv_setiv (sv, (IV)&coroapi);
2465 SvREADONLY_on (sv); 3804 SvREADONLY_on (sv);
2466 } 3805 }
2467} 3806}
3807
3808SV *
3809async (...)
3810 PROTOTYPE: &@
3811 CODE:
3812 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3813 api_ready (aTHX_ RETVAL);
3814 OUTPUT:
3815 RETVAL
3816
3817void
3818_destroy (Coro::State coro)
3819 CODE:
3820 /* used by the manager thread */
3821 coro_state_destroy (aTHX_ coro);
3822
3823void
3824on_destroy (Coro::State coro, SV *cb)
3825 CODE:
3826 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3827
3828void
3829join (...)
3830 CODE:
3831 CORO_EXECUTE_SLF_XS (slf_init_join);
3832
3833void
3834terminate (...)
3835 CODE:
3836 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3837
3838void
3839cancel (...)
3840 CODE:
3841 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3842
3843int
3844safe_cancel (Coro::State self, ...)
3845 C_ARGS: aTHX_ self, &ST (1), items - 1
2468 3846
2469void 3847void
2470schedule (...) 3848schedule (...)
2471 CODE: 3849 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3850 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3851
3852void
3853schedule_to (...)
3854 CODE:
3855 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3856
3857void
3858cede_to (...)
3859 CODE:
3860 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2473 3861
2474void 3862void
2475cede (...) 3863cede (...)
2476 CODE: 3864 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede); 3865 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2491void 3879void
2492_set_readyhook (SV *hook) 3880_set_readyhook (SV *hook)
2493 PROTOTYPE: $ 3881 PROTOTYPE: $
2494 CODE: 3882 CODE:
2495 SvREFCNT_dec (coro_readyhook); 3883 SvREFCNT_dec (coro_readyhook);
3884 SvGETMAGIC (hook);
3885 if (SvOK (hook))
3886 {
2496 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3887 coro_readyhook = newSVsv (hook);
3888 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3889 }
3890 else
3891 {
3892 coro_readyhook = 0;
3893 CORO_READYHOOK = 0;
3894 }
2497 3895
2498int 3896int
2499prio (Coro::State coro, int newprio = 0) 3897prio (Coro::State coro, int newprio = 0)
2500 PROTOTYPE: $;$ 3898 PROTOTYPE: $;$
2501 ALIAS: 3899 ALIAS:
… …
2507 if (items > 1) 3905 if (items > 1)
2508 { 3906 {
2509 if (ix) 3907 if (ix)
2510 newprio = coro->prio - newprio; 3908 newprio = coro->prio - newprio;
2511 3909
2512 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3910 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2513 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3911 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2514 3912
2515 coro->prio = newprio; 3913 coro->prio = newprio;
2516 } 3914 }
2517} 3915}
2518 OUTPUT: 3916 OUTPUT:
… …
2532 CODE: 3930 CODE:
2533 RETVAL = coro_nready; 3931 RETVAL = coro_nready;
2534 OUTPUT: 3932 OUTPUT:
2535 RETVAL 3933 RETVAL
2536 3934
2537# for async_pool speedup
2538void 3935void
2539_pool_1 (SV *cb) 3936suspend (Coro::State self)
3937 PROTOTYPE: $
2540 CODE: 3938 CODE:
2541{ 3939 self->flags |= CF_SUSPENDED;
2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
2544 AV *defav = GvAV (PL_defgv);
2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2546 AV *invoke_av;
2547 int i, len;
2548 3940
2549 if (!invoke) 3941void
3942resume (Coro::State self)
3943 PROTOTYPE: $
3944 CODE:
3945 self->flags &= ~CF_SUSPENDED;
3946
3947void
3948_pool_handler (...)
3949 CODE:
3950 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3951
3952void
3953async_pool (SV *cv, ...)
3954 PROTOTYPE: &@
3955 PPCODE:
3956{
3957 HV *hv = (HV *)av_pop (av_async_pool);
3958 AV *av = newAV ();
3959 SV *cb = ST (0);
3960 int i;
3961
3962 av_extend (av, items - 2);
3963 for (i = 1; i < items; ++i)
3964 av_push (av, SvREFCNT_inc_NN (ST (i)));
3965
3966 if ((SV *)hv == &PL_sv_undef)
2550 { 3967 {
2551 SV *old = PL_diehook; 3968 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2552 PL_diehook = 0; 3969 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2553 SvREFCNT_dec (old); 3970 SvREFCNT_dec (sv);
2554 croak ("\3async_pool terminate\2\n");
2555 } 3971 }
2556 3972
2557 SvREFCNT_dec (coro->saved_deffh);
2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2559
2560 hv_store (hv, "desc", sizeof ("desc") - 1,
2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2562
2563 invoke_av = (AV *)SvRV (invoke);
2564 len = av_len (invoke_av);
2565
2566 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2567
2568 if (len > 0)
2569 { 3973 {
2570 av_fill (defav, len - 1); 3974 struct coro *coro = SvSTATE_hv (hv);
2571 for (i = 0; i < len; ++i) 3975
2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3976 assert (!coro->invoke_cb);
3977 assert (!coro->invoke_av);
3978 coro->invoke_cb = SvREFCNT_inc (cb);
3979 coro->invoke_av = av;
2573 } 3980 }
3981
3982 api_ready (aTHX_ (SV *)hv);
3983
3984 if (GIMME_V != G_VOID)
3985 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3986 else
3987 SvREFCNT_dec (hv);
2574} 3988}
3989
3990SV *
3991rouse_cb ()
3992 PROTOTYPE:
3993 CODE:
3994 RETVAL = coro_new_rouse_cb (aTHX);
3995 OUTPUT:
3996 RETVAL
2575 3997
2576void 3998void
2577_pool_2 (SV *cb) 3999rouse_wait (...)
4000 PROTOTYPE: ;$
4001 PPCODE:
4002 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4003
4004void
4005on_enter (SV *block)
4006 ALIAS:
4007 on_leave = 1
4008 PROTOTYPE: &
2578 CODE: 4009 CODE:
2579{ 4010{
2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv); 4011 struct coro *coro = SvSTATE_current;
4012 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2582 4013
2583 sv_setsv (cb, &PL_sv_undef); 4014 block = s_get_cv_croak (block);
2584 4015
2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4016 if (!*avp)
2586 coro->saved_deffh = 0;
2587
2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2590 {
2591 SV *old = PL_diehook;
2592 PL_diehook = 0;
2593 SvREFCNT_dec (old);
2594 croak ("\3async_pool terminate\2\n");
2595 }
2596
2597 av_clear (GvAV (PL_defgv));
2598 hv_store (hv, "desc", sizeof ("desc") - 1,
2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2600
2601 coro->prio = 0;
2602
2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2604 api_trace (aTHX_ coro_current, 0);
2605
2606 av_push (av_async_pool, newSVsv (coro_current));
2607}
2608
2609
2610MODULE = Coro::State PACKAGE = Coro::AIO
2611
2612void
2613_get_state (SV *self)
2614 PROTOTYPE: $
2615 PPCODE:
2616{
2617 AV *defav = GvAV (PL_defgv);
2618 AV *av = newAV (); 4017 *avp = newAV ();
2619 int i;
2620 SV *data_sv = newSV (sizeof (struct io_state));
2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624 4018
2625 data->errorno = errno; 4019 av_push (*avp, SvREFCNT_inc (block));
2626 data->laststype = PL_laststype;
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629 4020
2630 av_extend (av, AvFILLp (defav) + 1 + 1); 4021 if (!ix)
4022 on_enterleave_call (aTHX_ block);
2631 4023
2632 for (i = 0; i <= AvFILLp (defav); ++i) 4024 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4025 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2634 4026 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2635 av_push (av, data_sv);
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
2640}
2641
2642void
2643_set_state (SV *state)
2644 PROTOTYPE: $
2645 PPCODE:
2646{
2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
2650
2651 errno = data->errorno;
2652 PL_laststype = data->laststype;
2653 PL_laststatval = data->laststatval;
2654 PL_statcache = data->statcache;
2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2659}
2660
2661
2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2663
2664BOOT:
2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2666
2667void
2668_schedule (...)
2669 CODE:
2670{
2671 static int incede;
2672
2673 api_cede_notself (aTHX);
2674
2675 ++incede;
2676 while (coro_nready >= incede && api_cede (aTHX))
2677 ;
2678
2679 sv_setsv (sv_activity, &PL_sv_undef);
2680 if (coro_nready >= incede)
2681 {
2682 PUSHMARK (SP);
2683 PUTBACK;
2684 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2685 SPAGAIN;
2686 }
2687
2688 --incede;
2689} 4027}
2690 4028
2691 4029
2692MODULE = Coro::State PACKAGE = PerlIO::cede 4030MODULE = Coro::State PACKAGE = PerlIO::cede
2693 4031
2694BOOT: 4032BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4033 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696 4034
4035
2697MODULE = Coro::State PACKAGE = Coro::Semaphore 4036MODULE = Coro::State PACKAGE = Coro::Semaphore
2698 4037
2699SV * 4038SV *
2700new (SV *klass, SV *count_ = 0) 4039new (SV *klass, SV *count = 0)
2701 CODE: 4040 CODE:
2702{ 4041{
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4042 int semcnt = 1;
2704 AV *av = newAV (); 4043
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4044 if (count)
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4045 {
4046 SvGETMAGIC (count);
4047
4048 if (SvOK (count))
4049 semcnt = SvIV (count);
4050 }
4051
4052 RETVAL = sv_bless (
4053 coro_waitarray_new (aTHX_ semcnt),
4054 GvSTASH (CvGV (cv))
4055 );
2707} 4056}
4057 OUTPUT:
4058 RETVAL
4059
4060# helper for Coro::Channel and others
4061SV *
4062_alloc (int count)
4063 CODE:
4064 RETVAL = coro_waitarray_new (aTHX_ count);
2708 OUTPUT: 4065 OUTPUT:
2709 RETVAL 4066 RETVAL
2710 4067
2711SV * 4068SV *
2712count (SV *self) 4069count (SV *self)
… …
2721 adjust = 1 4078 adjust = 1
2722 CODE: 4079 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4080 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724 4081
2725void 4082void
2726down (SV *self) 4083down (...)
2727 CODE: 4084 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4085 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4086
4087void
4088wait (...)
4089 CODE:
4090 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2729 4091
2730void 4092void
2731try (SV *self) 4093try (SV *self)
2732 PPCODE: 4094 PPCODE:
2733{ 4095{
… …
2745 XSRETURN_NO; 4107 XSRETURN_NO;
2746} 4108}
2747 4109
2748void 4110void
2749waiters (SV *self) 4111waiters (SV *self)
2750 CODE: 4112 PPCODE:
2751{ 4113{
2752 AV *av = (AV *)SvRV (self); 4114 AV *av = (AV *)SvRV (self);
4115 int wcount = AvFILLp (av) + 1 - 1;
2753 4116
2754 if (GIMME_V == G_SCALAR) 4117 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4118 XPUSHs (sv_2mortal (newSViv (wcount)));
2756 else 4119 else
2757 { 4120 {
2758 int i; 4121 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1); 4122 EXTEND (SP, wcount);
2760 for (i = 1; i <= AvFILLp (av); ++i) 4123 for (i = 1; i <= wcount; ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i])); 4124 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2762 } 4125 }
2763} 4126}
2764 4127
4128MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4129
4130void
4131_may_delete (SV *sem, int count, int extra_refs)
4132 PPCODE:
4133{
4134 AV *av = (AV *)SvRV (sem);
4135
4136 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4137 && AvFILLp (av) == 0 /* no waiters, just count */
4138 && SvIV (AvARRAY (av)[0]) == count)
4139 XSRETURN_YES;
4140
4141 XSRETURN_NO;
4142}
4143
4144MODULE = Coro::State PACKAGE = Coro::Signal
4145
4146SV *
4147new (SV *klass)
4148 CODE:
4149 RETVAL = sv_bless (
4150 coro_waitarray_new (aTHX_ 0),
4151 GvSTASH (CvGV (cv))
4152 );
4153 OUTPUT:
4154 RETVAL
4155
4156void
4157wait (...)
4158 CODE:
4159 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4160
4161void
4162broadcast (SV *self)
4163 CODE:
4164{
4165 AV *av = (AV *)SvRV (self);
4166 coro_signal_wake (aTHX_ av, AvFILLp (av));
4167}
4168
4169void
4170send (SV *self)
4171 CODE:
4172{
4173 AV *av = (AV *)SvRV (self);
4174
4175 if (AvFILLp (av))
4176 coro_signal_wake (aTHX_ av, 1);
4177 else
4178 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4179}
4180
4181IV
4182awaited (SV *self)
4183 CODE:
4184 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4185 OUTPUT:
4186 RETVAL
4187
4188
4189MODULE = Coro::State PACKAGE = Coro::AnyEvent
4190
4191BOOT:
4192 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4193
4194void
4195_schedule (...)
4196 CODE:
4197{
4198 static int incede;
4199
4200 api_cede_notself (aTHX);
4201
4202 ++incede;
4203 while (coro_nready >= incede && api_cede (aTHX))
4204 ;
4205
4206 sv_setsv (sv_activity, &PL_sv_undef);
4207 if (coro_nready >= incede)
4208 {
4209 PUSHMARK (SP);
4210 PUTBACK;
4211 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4212 }
4213
4214 --incede;
4215}
4216
4217
4218MODULE = Coro::State PACKAGE = Coro::AIO
4219
4220void
4221_register (char *target, char *proto, SV *req)
4222 CODE:
4223{
4224 SV *req_cv = s_get_cv_croak (req);
4225 /* newXSproto doesn't return the CV on 5.8 */
4226 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4227 sv_setpv ((SV *)slf_cv, proto);
4228 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4229}
4230
4231MODULE = Coro::State PACKAGE = Coro::Select
4232
4233void
4234patch_pp_sselect ()
4235 CODE:
4236 if (!coro_old_pp_sselect)
4237 {
4238 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4239 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4240 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4241 }
4242
4243void
4244unpatch_pp_sselect ()
4245 CODE:
4246 if (coro_old_pp_sselect)
4247 {
4248 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4249 coro_old_pp_sselect = 0;
4250 }
4251

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