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Comparing Coro/Coro/State.xs (file contents):
Revision 1.171 by root, Sat Sep 29 19:42:10 2007 UTC vs.
Revision 1.361 by root, Wed Jul 1 07:26:40 2009 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
75/* 5.8.7 */ 110/* 5.8.7 */
76#ifndef SvRV_set 111#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 113#endif
79 114
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 126#endif
92 127
93/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
94 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
95#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
96#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
97 137
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
99 139
100#if __GNUC__ >= 3 140#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 142# define expect(expr,value) __builtin_expect ((expr), (value))
143# define INLINE static inline
103#else 144#else
104# define attribute(x) 145# define attribute(x)
105# define BARRIER 146# define expect(expr,value) (expr)
147# define INLINE static
106#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
107 152
108#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
109 154
110#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
111 157
112#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 159# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 161# endif
162#endif
120 163
121/* helper storage struct for Coro::AIO */ 164#ifdef __linux
122struct io_state 165# include <time.h> /* for timespec */
123{ 166# include <syscall.h> /* for SYS_* */
124 int errorno; 167# ifdef SYS_clock_gettime
125 I32 laststype; 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
126 int laststatval; 169# define CORO_CLOCK_MONOTONIC 1
127 Stat_t statcache; 170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
128}; 171# endif
172#endif
129 173
174static double (*nvtime)(); /* so why doesn't it take void? */
175static void (*u2time)(pTHX_ UV ret[2]);
176
177/* we hijack an hopefully unused CV flag for our purposes */
178#define CVf_SLF 0x4000
179static OP *pp_slf (pTHX);
180
181static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 182static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 183static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 184static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 185static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 186static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 187static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
188
189static AV *av_destroy; /* destruction queue */
190static SV *sv_manager; /* the manager coro */
191static SV *sv_idle; /* $Coro::idle */
192
193static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook;
196static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */
136 198
137/* async_pool helper stuff */ 199/* async_pool helper stuff */
138static SV *sv_pool_rss; 200static SV *sv_pool_rss;
139static SV *sv_pool_size; 201static SV *sv_pool_size;
202static SV *sv_async_pool_idle; /* description string */
140static AV *av_async_pool; 203static AV *av_async_pool; /* idle pool */
204static SV *sv_Coro; /* class string */
205static CV *cv_pool_handler;
206static CV *cv_coro_state_new;
207
208/* Coro::AnyEvent */
209static SV *sv_activity;
210
211/* enable processtime/realtime profiling */
212static char enable_times;
213typedef U32 coro_ts[2];
214static coro_ts time_real, time_cpu;
215static char times_valid;
141 216
142static struct coro_cctx *cctx_first; 217static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 218static int cctx_count, cctx_idle;
144 219
145enum { 220enum {
… …
150 CC_TRACE_LINE = 0x10, /* trace each statement */ 225 CC_TRACE_LINE = 0x10, /* trace each statement */
151 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 226 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
152}; 227};
153 228
154/* this is a structure representing a c-level coroutine */ 229/* this is a structure representing a c-level coroutine */
155typedef struct coro_cctx { 230typedef struct coro_cctx
231{
156 struct coro_cctx *next; 232 struct coro_cctx *next;
157 233
158 /* the stack */ 234 /* the stack */
159 void *sptr; 235 void *sptr;
160 size_t ssize; 236 size_t ssize;
… …
163 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 239 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
164 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 240 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
165 JMPENV *top_env; 241 JMPENV *top_env;
166 coro_context cctx; 242 coro_context cctx;
167 243
244 U32 gen;
168#if CORO_USE_VALGRIND 245#if CORO_USE_VALGRIND
169 int valgrind_id; 246 int valgrind_id;
170#endif 247#endif
171 unsigned char flags; 248 unsigned char flags;
172} coro_cctx; 249} coro_cctx;
250
251coro_cctx *cctx_current; /* the currently running cctx */
252
253/*****************************************************************************/
173 254
174enum { 255enum {
175 CF_RUNNING = 0x0001, /* coroutine is running */ 256 CF_RUNNING = 0x0001, /* coroutine is running */
176 CF_READY = 0x0002, /* coroutine is ready */ 257 CF_READY = 0x0002, /* coroutine is ready */
177 CF_NEW = 0x0004, /* has never been switched to */ 258 CF_NEW = 0x0004, /* has never been switched to */
178 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 259 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
260 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
179}; 261};
180 262
181/* this is a structure representing a perl-level coroutine */ 263/* the structure where most of the perl state is stored, overlaid on the cxstack */
182struct coro { 264typedef struct
183 /* the c coroutine allocated to this perl coroutine, if any */ 265{
184 coro_cctx *cctx; 266 SV *defsv;
185 267 AV *defav;
186 /* data associated with this coroutine (initial args) */ 268 SV *errsv;
187 AV *args; 269 SV *irsgv;
188 int refcnt; 270 HV *hinthv;
189 int save; /* CORO_SAVE flags */
190 int flags; /* CF_ flags */
191
192 /* optionally saved, might be zero */
193 AV *defav; /* @_ */
194 SV *defsv; /* $_ */
195 SV *errsv; /* $@ */
196 GV *deffh; /* default filehandle */
197 SV *irssv; /* $/ */
198 SV *irssv_sv; /* real $/ cache */
199
200#define VAR(name,type) type name; 271#define VAR(name,type) type name;
201# include "state.h" 272# include "state.h"
202#undef VAR 273#undef VAR
274} perl_slots;
275
276#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
277
278/* this is a structure representing a perl-level coroutine */
279struct coro {
280 /* the C coroutine allocated to this perl coroutine, if any */
281 coro_cctx *cctx;
282
283 /* ready queue */
284 struct coro *next_ready;
285
286 /* state data */
287 struct CoroSLF slf_frame; /* saved slf frame */
288 AV *mainstack;
289 perl_slots *slot; /* basically the saved sp */
290
291 CV *startcv; /* the CV to execute */
292 AV *args; /* data associated with this coroutine (initial args) */
293 int refcnt; /* coroutines are refcounted, yes */
294 int flags; /* CF_ flags */
295 HV *hv; /* the perl hash associated with this coro, if any */
296 void (*on_destroy)(pTHX_ struct coro *coro);
297
298 /* statistics */
299 int usecount; /* number of transfers to this coro */
203 300
204 /* coro process data */ 301 /* coro process data */
205 int prio; 302 int prio;
303 SV *except; /* exception to be thrown */
304 SV *rouse_cb;
305
306 /* async_pool */
307 SV *saved_deffh;
308 SV *invoke_cb;
309 AV *invoke_av;
310
311 /* on_enter/on_leave */
312 AV *on_enter;
313 AV *on_leave;
314
315 /* times */
316 coro_ts t_cpu, t_real;
206 317
207 /* linked list */ 318 /* linked list */
208 struct coro *next, *prev; 319 struct coro *next, *prev;
209 HV *hv; /* the perl hash associated with this coro, if any */
210}; 320};
211 321
212typedef struct coro *Coro__State; 322typedef struct coro *Coro__State;
213typedef struct coro *Coro__State_or_hashref; 323typedef struct coro *Coro__State_or_hashref;
214 324
325/* the following variables are effectively part of the perl context */
326/* and get copied between struct coro and these variables */
327/* the mainr easonw e don't support windows process emulation */
328static struct CoroSLF slf_frame; /* the current slf frame */
329
215/** Coro ********************************************************************/ 330/** Coro ********************************************************************/
216 331
217#define PRIO_MAX 3 332#define CORO_PRIO_MAX 3
218#define PRIO_HIGH 1 333#define CORO_PRIO_HIGH 1
219#define PRIO_NORMAL 0 334#define CORO_PRIO_NORMAL 0
220#define PRIO_LOW -1 335#define CORO_PRIO_LOW -1
221#define PRIO_IDLE -3 336#define CORO_PRIO_IDLE -3
222#define PRIO_MIN -4 337#define CORO_PRIO_MIN -4
223 338
224/* for Coro.pm */ 339/* for Coro.pm */
225static SV *coro_current; 340static SV *coro_current;
226static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 341static SV *coro_readyhook;
227static int coro_nready; 342static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
343static CV *cv_coro_run, *cv_coro_terminate;
228static struct coro *coro_first; 344static struct coro *coro_first;
345#define coro_nready coroapi.nready
229 346
230/** lowlevel stuff **********************************************************/ 347/** lowlevel stuff **********************************************************/
231 348
349static SV *
350coro_get_sv (pTHX_ const char *name, int create)
351{
352#if PERL_VERSION_ATLEAST (5,10,0)
353 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
354 get_sv (name, create);
355#endif
356 return get_sv (name, create);
357}
358
232static AV * 359static AV *
360coro_get_av (pTHX_ const char *name, int create)
361{
362#if PERL_VERSION_ATLEAST (5,10,0)
363 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
364 get_av (name, create);
365#endif
366 return get_av (name, create);
367}
368
369static HV *
370coro_get_hv (pTHX_ const char *name, int create)
371{
372#if PERL_VERSION_ATLEAST (5,10,0)
373 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
374 get_hv (name, create);
375#endif
376 return get_hv (name, create);
377}
378
379/* may croak */
380INLINE CV *
381coro_sv_2cv (pTHX_ SV *sv)
382{
383 HV *st;
384 GV *gvp;
385 CV *cv = sv_2cv (sv, &st, &gvp, 0);
386
387 if (!cv)
388 croak ("code reference expected");
389
390 return cv;
391}
392
393INLINE void
394coro_times_update ()
395{
396#ifdef coro_clock_gettime
397 struct timespec ts;
398
399 ts.tv_sec = ts.tv_nsec = 0;
400 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
401 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
402
403 ts.tv_sec = ts.tv_nsec = 0;
404 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
405 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
406#else
407 dTHX;
408 UV tv[2];
409
410 u2time (aTHX_ &tv);
411 time_real [0] = tv [0];
412 time_real [1] = tv [1] * 1000;
413#endif
414}
415
416INLINE void
417coro_times_add (struct coro *c)
418{
419 c->t_real [1] += time_real [1];
420 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
421 c->t_real [0] += time_real [0];
422
423 c->t_cpu [1] += time_cpu [1];
424 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
425 c->t_cpu [0] += time_cpu [0];
426}
427
428INLINE void
429coro_times_sub (struct coro *c)
430{
431 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
432 c->t_real [1] -= time_real [1];
433 c->t_real [0] -= time_real [0];
434
435 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
436 c->t_cpu [1] -= time_cpu [1];
437 c->t_cpu [0] -= time_cpu [0];
438}
439
440/*****************************************************************************/
441/* magic glue */
442
443#define CORO_MAGIC_type_cv 26
444#define CORO_MAGIC_type_state PERL_MAGIC_ext
445
446#define CORO_MAGIC_NN(sv, type) \
447 (expect_true (SvMAGIC (sv)->mg_type == type) \
448 ? SvMAGIC (sv) \
449 : mg_find (sv, type))
450
451#define CORO_MAGIC(sv, type) \
452 (expect_true (SvMAGIC (sv)) \
453 ? CORO_MAGIC_NN (sv, type) \
454 : 0)
455
456#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
457#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
458
459INLINE struct coro *
460SvSTATE_ (pTHX_ SV *coro)
461{
462 HV *stash;
463 MAGIC *mg;
464
465 if (SvROK (coro))
466 coro = SvRV (coro);
467
468 if (expect_false (SvTYPE (coro) != SVt_PVHV))
469 croak ("Coro::State object required");
470
471 stash = SvSTASH (coro);
472 if (expect_false (stash != coro_stash && stash != coro_state_stash))
473 {
474 /* very slow, but rare, check */
475 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
476 croak ("Coro::State object required");
477 }
478
479 mg = CORO_MAGIC_state (coro);
480 return (struct coro *)mg->mg_ptr;
481}
482
483#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
484
485/* faster than SvSTATE, but expects a coroutine hv */
486#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
487#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
488
489/*****************************************************************************/
490/* padlist management and caching */
491
492static AV *
233coro_clone_padlist (pTHX_ CV *cv) 493coro_derive_padlist (pTHX_ CV *cv)
234{ 494{
235 AV *padlist = CvPADLIST (cv); 495 AV *padlist = CvPADLIST (cv);
236 AV *newpadlist, *newpad; 496 AV *newpadlist, *newpad;
237 497
238 newpadlist = newAV (); 498 newpadlist = newAV ();
239 AvREAL_off (newpadlist); 499 AvREAL_off (newpadlist);
240#if PERL_VERSION_ATLEAST (5,9,0) 500#if PERL_VERSION_ATLEAST (5,10,0)
241 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 501 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
242#else 502#else
243 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 503 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
244#endif 504#endif
245 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 505 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
246 --AvFILLp (padlist); 506 --AvFILLp (padlist);
247 507
248 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 508 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
249 av_store (newpadlist, 1, (SV *)newpad); 509 av_store (newpadlist, 1, (SV *)newpad);
250 510
251 return newpadlist; 511 return newpadlist;
252} 512}
253 513
254static void 514static void
255free_padlist (pTHX_ AV *padlist) 515free_padlist (pTHX_ AV *padlist)
256{ 516{
257 /* may be during global destruction */ 517 /* may be during global destruction */
258 if (SvREFCNT (padlist)) 518 if (!IN_DESTRUCT)
259 { 519 {
260 I32 i = AvFILLp (padlist); 520 I32 i = AvFILLp (padlist);
261 while (i >= 0) 521
522 while (i > 0) /* special-case index 0 */
262 { 523 {
263 SV **svp = av_fetch (padlist, i--, FALSE); 524 /* we try to be extra-careful here */
264 if (svp) 525 AV *av = (AV *)AvARRAY (padlist)[i--];
265 { 526 I32 j = AvFILLp (av);
266 SV *sv; 527
267 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 528 while (j >= 0)
529 SvREFCNT_dec (AvARRAY (av)[j--]);
530
531 AvFILLp (av) = -1;
268 SvREFCNT_dec (sv); 532 SvREFCNT_dec (av);
269
270 SvREFCNT_dec (*svp);
271 }
272 } 533 }
273 534
535 SvREFCNT_dec (AvARRAY (padlist)[0]);
536
537 AvFILLp (padlist) = -1;
274 SvREFCNT_dec ((SV*)padlist); 538 SvREFCNT_dec ((SV*)padlist);
275 } 539 }
276} 540}
277 541
278static int 542static int
279coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 543coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
280{ 544{
281 AV *padlist; 545 AV *padlist;
282 AV *av = (AV *)mg->mg_obj; 546 AV *av = (AV *)mg->mg_obj;
547
548 /* perl manages to free our internal AV and _then_ call us */
549 if (IN_DESTRUCT)
550 return;
283 551
284 /* casting is fun. */ 552 /* casting is fun. */
285 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 553 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
286 free_padlist (aTHX_ padlist); 554 free_padlist (aTHX_ padlist);
287 555
288 SvREFCNT_dec (av); 556 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
289 557
290 return 0; 558 return 0;
291} 559}
292 560
293#define PERL_MAGIC_coro PERL_MAGIC_ext 561static MGVTBL coro_cv_vtbl = {
294 562 0, 0, 0, 0,
295static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 563 coro_cv_free
296 564};
297#define CORO_MAGIC(cv) \
298 SvMAGIC (cv) \
299 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
300 ? SvMAGIC (cv) \
301 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
302 : 0
303
304static struct coro *
305SvSTATE_ (pTHX_ SV *coro)
306{
307 HV *stash;
308 MAGIC *mg;
309
310 if (SvROK (coro))
311 coro = SvRV (coro);
312
313 stash = SvSTASH (coro);
314 if (stash != coro_stash && stash != coro_state_stash)
315 {
316 /* very slow, but rare, check */
317 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
318 croak ("Coro::State object required");
319 }
320
321 mg = CORO_MAGIC (coro);
322 return (struct coro *)mg->mg_ptr;
323}
324
325#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
326 565
327/* the next two functions merely cache the padlists */ 566/* the next two functions merely cache the padlists */
328static void 567static void
329get_padlist (pTHX_ CV *cv) 568get_padlist (pTHX_ CV *cv)
330{ 569{
331 MAGIC *mg = CORO_MAGIC (cv); 570 MAGIC *mg = CORO_MAGIC_cv (cv);
332 AV *av; 571 AV *av;
333 572
334 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 573 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
335 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 574 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
336 else 575 else
337 { 576 {
338#if CORO_PREFER_PERL_FUNCTIONS 577#if CORO_PREFER_PERL_FUNCTIONS
339 /* this is probably cleaner, but also slower? */ 578 /* this is probably cleaner? but also slower! */
579 /* in practise, it seems to be less stable */
340 CV *cp = Perl_cv_clone (cv); 580 CV *cp = Perl_cv_clone (aTHX_ cv);
341 CvPADLIST (cv) = CvPADLIST (cp); 581 CvPADLIST (cv) = CvPADLIST (cp);
342 CvPADLIST (cp) = 0; 582 CvPADLIST (cp) = 0;
343 SvREFCNT_dec (cp); 583 SvREFCNT_dec (cp);
344#else 584#else
345 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 585 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
346#endif 586#endif
347 } 587 }
348} 588}
349 589
350static void 590static void
351put_padlist (pTHX_ CV *cv) 591put_padlist (pTHX_ CV *cv)
352{ 592{
353 MAGIC *mg = CORO_MAGIC (cv); 593 MAGIC *mg = CORO_MAGIC_cv (cv);
354 AV *av; 594 AV *av;
355 595
356 if (!mg) 596 if (expect_false (!mg))
357 { 597 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
358 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
359 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
360 mg->mg_virtual = &vtbl_coro;
361 mg->mg_obj = (SV *)newAV ();
362 }
363 598
364 av = (AV *)mg->mg_obj; 599 av = (AV *)mg->mg_obj;
365 600
366 if (AvFILLp (av) >= AvMAX (av)) 601 if (expect_false (AvFILLp (av) >= AvMAX (av)))
367 av_extend (av, AvMAX (av) + 1); 602 av_extend (av, AvFILLp (av) + 1);
368 603
369 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 604 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
370} 605}
371 606
372/** load & save, init *******************************************************/ 607/** load & save, init *******************************************************/
373 608
374#define SB do { 609static void
375#define SE } while (0) 610on_enterleave_call (pTHX_ SV *cb);
376
377#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
378 611
379static void 612static void
380load_perl (pTHX_ Coro__State c) 613load_perl (pTHX_ Coro__State c)
381{ 614{
615 perl_slots *slot = c->slot;
616 c->slot = 0;
617
618 PL_mainstack = c->mainstack;
619
620 GvSV (PL_defgv) = slot->defsv;
621 GvAV (PL_defgv) = slot->defav;
622 GvSV (PL_errgv) = slot->errsv;
623 GvSV (irsgv) = slot->irsgv;
624 GvHV (PL_hintgv) = slot->hinthv;
625
382#define VAR(name,type) PL_ ## name = c->name; 626 #define VAR(name,type) PL_ ## name = slot->name;
383# include "state.h" 627 # include "state.h"
384#undef VAR 628 #undef VAR
385
386 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
387 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
388 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
389 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
390
391 if (c->irssv)
392 {
393 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
394 {
395 SvREFCNT_dec (c->irssv);
396 c->irssv = 0;
397 }
398 else
399 {
400 REPLACE_SV (PL_rs, c->irssv);
401 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
402 sv_setsv (c->irssv_sv, PL_rs);
403 }
404 }
405 629
406 { 630 {
407 dSP; 631 dSP;
632
408 CV *cv; 633 CV *cv;
409 634
410 /* now do the ugly restore mess */ 635 /* now do the ugly restore mess */
411 while ((cv = (CV *)POPs)) 636 while (expect_true (cv = (CV *)POPs))
412 { 637 {
413 put_padlist (aTHX_ cv); /* mark this padlist as available */ 638 put_padlist (aTHX_ cv); /* mark this padlist as available */
414 CvDEPTH (cv) = PTR2IV (POPs); 639 CvDEPTH (cv) = PTR2IV (POPs);
415 CvPADLIST (cv) = (AV *)POPs; 640 CvPADLIST (cv) = (AV *)POPs;
416 } 641 }
417 642
418 PUTBACK; 643 PUTBACK;
419 } 644 }
645
646 slf_frame = c->slf_frame;
647 CORO_THROW = c->except;
648
649 if (expect_false (enable_times))
650 {
651 if (expect_false (!times_valid))
652 coro_times_update ();
653
654 coro_times_sub (c);
655 }
656
657 if (expect_false (c->on_enter))
658 {
659 int i;
660
661 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
662 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
663 }
420} 664}
421 665
422static void 666static void
423save_perl (pTHX_ Coro__State c) 667save_perl (pTHX_ Coro__State c)
424{ 668{
669 if (expect_false (c->on_leave))
670 {
671 int i;
672
673 for (i = AvFILLp (c->on_leave); i >= 0; --i)
674 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
675 }
676
677 times_valid = 0;
678
679 if (expect_false (enable_times))
680 {
681 coro_times_update (); times_valid = 1;
682 coro_times_add (c);
683 }
684
685 c->except = CORO_THROW;
686 c->slf_frame = slf_frame;
687
425 { 688 {
426 dSP; 689 dSP;
427 I32 cxix = cxstack_ix; 690 I32 cxix = cxstack_ix;
428 PERL_CONTEXT *ccstk = cxstack; 691 PERL_CONTEXT *ccstk = cxstack;
429 PERL_SI *top_si = PL_curstackinfo; 692 PERL_SI *top_si = PL_curstackinfo;
… …
435 698
436 XPUSHs (Nullsv); 699 XPUSHs (Nullsv);
437 /* this loop was inspired by pp_caller */ 700 /* this loop was inspired by pp_caller */
438 for (;;) 701 for (;;)
439 { 702 {
440 while (cxix >= 0) 703 while (expect_true (cxix >= 0))
441 { 704 {
442 PERL_CONTEXT *cx = &ccstk[cxix--]; 705 PERL_CONTEXT *cx = &ccstk[cxix--];
443 706
444 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 707 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
445 { 708 {
446 CV *cv = cx->blk_sub.cv; 709 CV *cv = cx->blk_sub.cv;
447 710
448 if (CvDEPTH (cv)) 711 if (expect_true (CvDEPTH (cv)))
449 { 712 {
450 EXTEND (SP, 3); 713 EXTEND (SP, 3);
451 PUSHs ((SV *)CvPADLIST (cv)); 714 PUSHs ((SV *)CvPADLIST (cv));
452 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 715 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
453 PUSHs ((SV *)cv); 716 PUSHs ((SV *)cv);
454 717
455 CvDEPTH (cv) = 0; 718 CvDEPTH (cv) = 0;
456 get_padlist (aTHX_ cv); 719 get_padlist (aTHX_ cv);
457 } 720 }
458 } 721 }
459 } 722 }
460 723
461 if (top_si->si_type == PERLSI_MAIN) 724 if (expect_true (top_si->si_type == PERLSI_MAIN))
462 break; 725 break;
463 726
464 top_si = top_si->si_prev; 727 top_si = top_si->si_prev;
465 ccstk = top_si->si_cxstack; 728 ccstk = top_si->si_cxstack;
466 cxix = top_si->si_cxix; 729 cxix = top_si->si_cxix;
467 } 730 }
468 731
469 PUTBACK; 732 PUTBACK;
470 } 733 }
471 734
472 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 735 /* allocate some space on the context stack for our purposes */
473 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 736 /* we manually unroll here, as usually 2 slots is enough */
474 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 737 if (SLOT_COUNT >= 1) CXINC;
475 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 738 if (SLOT_COUNT >= 2) CXINC;
476 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 739 if (SLOT_COUNT >= 3) CXINC;
740 {
741 int i;
742 for (i = 3; i < SLOT_COUNT; ++i)
743 CXINC;
744 }
745 cxstack_ix -= SLOT_COUNT; /* undo allocation */
477 746
747 c->mainstack = PL_mainstack;
748
749 {
750 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
751
752 slot->defav = GvAV (PL_defgv);
753 slot->defsv = DEFSV;
754 slot->errsv = ERRSV;
755 slot->irsgv = GvSV (irsgv);
756 slot->hinthv = GvHV (PL_hintgv);
757
478#define VAR(name,type)c->name = PL_ ## name; 758 #define VAR(name,type) slot->name = PL_ ## name;
479# include "state.h" 759 # include "state.h"
480#undef VAR 760 #undef VAR
761 }
481} 762}
482 763
483/* 764/*
484 * allocate various perl stacks. This is an exact copy 765 * allocate various perl stacks. This is almost an exact copy
485 * of perl.c:init_stacks, except that it uses less memory 766 * of perl.c:init_stacks, except that it uses less memory
486 * on the (sometimes correct) assumption that coroutines do 767 * on the (sometimes correct) assumption that coroutines do
487 * not usually need a lot of stackspace. 768 * not usually need a lot of stackspace.
488 */ 769 */
489#if CORO_PREFER_PERL_FUNCTIONS 770#if CORO_PREFER_PERL_FUNCTIONS
490# define coro_init_stacks init_stacks 771# define coro_init_stacks(thx) init_stacks ()
491#else 772#else
492static void 773static void
493coro_init_stacks (pTHX) 774coro_init_stacks (pTHX)
494{ 775{
495 PL_curstackinfo = new_stackinfo(64, 6); 776 PL_curstackinfo = new_stackinfo(32, 8);
496 PL_curstackinfo->si_type = PERLSI_MAIN; 777 PL_curstackinfo->si_type = PERLSI_MAIN;
497 PL_curstack = PL_curstackinfo->si_stack; 778 PL_curstack = PL_curstackinfo->si_stack;
498 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 779 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
499 780
500 PL_stack_base = AvARRAY(PL_curstack); 781 PL_stack_base = AvARRAY(PL_curstack);
501 PL_stack_sp = PL_stack_base; 782 PL_stack_sp = PL_stack_base;
502 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 783 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
503 784
504 New(50,PL_tmps_stack,64,SV*); 785 New(50,PL_tmps_stack,32,SV*);
505 PL_tmps_floor = -1; 786 PL_tmps_floor = -1;
506 PL_tmps_ix = -1; 787 PL_tmps_ix = -1;
507 PL_tmps_max = 64; 788 PL_tmps_max = 32;
508 789
509 New(54,PL_markstack,16,I32); 790 New(54,PL_markstack,16,I32);
510 PL_markstack_ptr = PL_markstack; 791 PL_markstack_ptr = PL_markstack;
511 PL_markstack_max = PL_markstack + 16; 792 PL_markstack_max = PL_markstack + 16;
512 793
513#ifdef SET_MARK_OFFSET 794#ifdef SET_MARK_OFFSET
514 SET_MARK_OFFSET; 795 SET_MARK_OFFSET;
515#endif 796#endif
516 797
517 New(54,PL_scopestack,16,I32); 798 New(54,PL_scopestack,8,I32);
518 PL_scopestack_ix = 0; 799 PL_scopestack_ix = 0;
519 PL_scopestack_max = 16; 800 PL_scopestack_max = 8;
520 801
521 New(54,PL_savestack,64,ANY); 802 New(54,PL_savestack,24,ANY);
522 PL_savestack_ix = 0; 803 PL_savestack_ix = 0;
523 PL_savestack_max = 64; 804 PL_savestack_max = 24;
524 805
525#if !PERL_VERSION_ATLEAST (5,9,0) 806#if !PERL_VERSION_ATLEAST (5,10,0)
526 New(54,PL_retstack,4,OP*); 807 New(54,PL_retstack,4,OP*);
527 PL_retstack_ix = 0; 808 PL_retstack_ix = 0;
528 PL_retstack_max = 4; 809 PL_retstack_max = 4;
529#endif 810#endif
530} 811}
… …
532 813
533/* 814/*
534 * destroy the stacks, the callchain etc... 815 * destroy the stacks, the callchain etc...
535 */ 816 */
536static void 817static void
537coro_destroy_stacks (pTHX) 818coro_destruct_stacks (pTHX)
538{ 819{
539 if (!IN_DESTRUCT)
540 {
541 /* restore all saved variables and stuff */
542 LEAVE_SCOPE (0);
543 assert (PL_tmps_floor == -1);
544
545 /* free all temporaries */
546 FREETMPS;
547 assert (PL_tmps_ix == -1);
548
549 /* unwind all extra stacks */
550 POPSTACK_TO (PL_mainstack);
551
552 /* unwind main stack */
553 dounwind (-1);
554 }
555
556 while (PL_curstackinfo->si_next) 820 while (PL_curstackinfo->si_next)
557 PL_curstackinfo = PL_curstackinfo->si_next; 821 PL_curstackinfo = PL_curstackinfo->si_next;
558 822
559 while (PL_curstackinfo) 823 while (PL_curstackinfo)
560 { 824 {
… …
570 834
571 Safefree (PL_tmps_stack); 835 Safefree (PL_tmps_stack);
572 Safefree (PL_markstack); 836 Safefree (PL_markstack);
573 Safefree (PL_scopestack); 837 Safefree (PL_scopestack);
574 Safefree (PL_savestack); 838 Safefree (PL_savestack);
575#if !PERL_VERSION_ATLEAST (5,9,0) 839#if !PERL_VERSION_ATLEAST (5,10,0)
576 Safefree (PL_retstack); 840 Safefree (PL_retstack);
577#endif 841#endif
578} 842}
843
844#define CORO_RSS \
845 rss += sizeof (SYM (curstackinfo)); \
846 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
847 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
848 rss += SYM (tmps_max) * sizeof (SV *); \
849 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
850 rss += SYM (scopestack_max) * sizeof (I32); \
851 rss += SYM (savestack_max) * sizeof (ANY);
579 852
580static size_t 853static size_t
581coro_rss (pTHX_ struct coro *coro) 854coro_rss (pTHX_ struct coro *coro)
582{ 855{
583 size_t rss = sizeof (coro); 856 size_t rss = sizeof (*coro);
584 857
585 if (coro->mainstack) 858 if (coro->mainstack)
586 { 859 {
587 if (coro->flags & CF_RUNNING) 860 if (coro->flags & CF_RUNNING)
588 { 861 {
589 #define VAR(name,type)coro->name = PL_ ## name; 862 #define SYM(sym) PL_ ## sym
590 # include "state.h" 863 CORO_RSS;
591 #undef VAR 864 #undef SYM
592 } 865 }
593 866 else
594 rss += sizeof (coro->curstackinfo); 867 {
595 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 868 #define SYM(sym) coro->slot->sym
596 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 869 CORO_RSS;
597 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 870 #undef SYM
598 rss += coro->tmps_max * sizeof (SV *); 871 }
599 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
600 rss += coro->scopestack_max * sizeof (I32);
601 rss += coro->savestack_max * sizeof (ANY);
602
603#if !PERL_VERSION_ATLEAST (5,9,0)
604 rss += coro->retstack_max * sizeof (OP *);
605#endif
606 } 872 }
607 873
608 return rss; 874 return rss;
609} 875}
610 876
611/** coroutine stack handling ************************************************/ 877/** coroutine stack handling ************************************************/
612 878
879static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
880static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
881static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
882
883/* apparently < 5.8.8 */
884#ifndef MgPV_nolen_const
885#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
886 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
887 (const char*)(mg)->mg_ptr)
888#endif
889
890/*
891 * This overrides the default magic get method of %SIG elements.
892 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
893 * and instead of trying to save and restore the hash elements, we just provide
894 * readback here.
895 */
613static void 896static int
897coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
898{
899 const char *s = MgPV_nolen_const (mg);
900
901 if (*s == '_')
902 {
903 SV **svp = 0;
904
905 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
906 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
907
908 if (svp)
909 {
910 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
911 return 0;
912 }
913 }
914
915 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
916}
917
918static int
919coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
920{
921 const char *s = MgPV_nolen_const (mg);
922
923 if (*s == '_')
924 {
925 SV **svp = 0;
926
927 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
928 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
929
930 if (svp)
931 {
932 SV *old = *svp;
933 *svp = 0;
934 SvREFCNT_dec (old);
935 return 0;
936 }
937 }
938
939 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
940}
941
942static int
943coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
944{
945 const char *s = MgPV_nolen_const (mg);
946
947 if (*s == '_')
948 {
949 SV **svp = 0;
950
951 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
952 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
953
954 if (svp)
955 {
956 SV *old = *svp;
957 *svp = SvOK (sv) ? newSVsv (sv) : 0;
958 SvREFCNT_dec (old);
959 return 0;
960 }
961 }
962
963 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
964}
965
966static void
967prepare_nop (pTHX_ struct coro_transfer_args *ta)
968{
969 /* kind of mega-hacky, but works */
970 ta->next = ta->prev = (struct coro *)ta;
971}
972
973static int
974slf_check_nop (pTHX_ struct CoroSLF *frame)
975{
976 return 0;
977}
978
979static int
980slf_check_repeat (pTHX_ struct CoroSLF *frame)
981{
982 return 1;
983}
984
985static UNOP coro_setup_op;
986
987static void NOINLINE /* noinline to keep it out of the transfer fast path */
614setup_coro (pTHX_ struct coro *coro) 988coro_setup (pTHX_ struct coro *coro)
615{ 989{
616 /* 990 /*
617 * emulate part of the perl startup here. 991 * emulate part of the perl startup here.
618 */ 992 */
619 coro_init_stacks (aTHX); 993 coro_init_stacks (aTHX);
620 994
621 PL_runops = RUNOPS_DEFAULT; 995 PL_runops = RUNOPS_DEFAULT;
622 PL_curcop = &PL_compiling; 996 PL_curcop = &PL_compiling;
623 PL_in_eval = EVAL_NULL; 997 PL_in_eval = EVAL_NULL;
624 PL_comppad = 0; 998 PL_comppad = 0;
999 PL_comppad_name = 0;
1000 PL_comppad_name_fill = 0;
1001 PL_comppad_name_floor = 0;
625 PL_curpm = 0; 1002 PL_curpm = 0;
1003 PL_curpad = 0;
626 PL_localizing = 0; 1004 PL_localizing = 0;
627 PL_dirty = 0; 1005 PL_dirty = 0;
628 PL_restartop = 0; 1006 PL_restartop = 0;
1007#if PERL_VERSION_ATLEAST (5,10,0)
1008 PL_parser = 0;
1009#endif
1010 PL_hints = 0;
1011
1012 /* recreate the die/warn hooks */
1013 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
1014 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
1015
1016 GvSV (PL_defgv) = newSV (0);
1017 GvAV (PL_defgv) = coro->args; coro->args = 0;
1018 GvSV (PL_errgv) = newSV (0);
1019 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1020 GvHV (PL_hintgv) = 0;
1021 PL_rs = newSVsv (GvSV (irsgv));
1022 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
629 1023
630 { 1024 {
631 dSP; 1025 dSP;
632 LOGOP myop; 1026 UNOP myop;
633 1027
634 SvREFCNT_dec (GvAV (PL_defgv));
635 GvAV (PL_defgv) = coro->args; coro->args = 0;
636
637 Zero (&myop, 1, LOGOP); 1028 Zero (&myop, 1, UNOP);
638 myop.op_next = Nullop; 1029 myop.op_next = Nullop;
1030 myop.op_type = OP_ENTERSUB;
639 myop.op_flags = OPf_WANT_VOID; 1031 myop.op_flags = OPf_WANT_VOID;
640 1032
641 PUSHMARK (SP); 1033 PUSHMARK (SP);
642 XPUSHs (av_shift (GvAV (PL_defgv))); 1034 PUSHs ((SV *)coro->startcv);
643 PUTBACK; 1035 PUTBACK;
644 PL_op = (OP *)&myop; 1036 PL_op = (OP *)&myop;
645 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1037 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
646 SPAGAIN;
647 } 1038 }
648 1039
649 ENTER; /* necessary e.g. for dounwind */ 1040 /* this newly created coroutine might be run on an existing cctx which most
650} 1041 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
1042 */
1043 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
1044 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
651 1045
1046 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1047 coro_setup_op.op_next = PL_op;
1048 coro_setup_op.op_type = OP_ENTERSUB;
1049 coro_setup_op.op_ppaddr = pp_slf;
1050 /* no flags etc. required, as an init function won't be called */
1051
1052 PL_op = (OP *)&coro_setup_op;
1053
1054 /* copy throw, in case it was set before coro_setup */
1055 CORO_THROW = coro->except;
1056
1057 if (expect_false (enable_times))
1058 {
1059 coro_times_update ();
1060 coro_times_sub (coro);
1061 }
1062}
1063
652static void 1064static void
1065coro_unwind_stacks (pTHX)
1066{
1067 if (!IN_DESTRUCT)
1068 {
1069 /* restore all saved variables and stuff */
1070 LEAVE_SCOPE (0);
1071 assert (PL_tmps_floor == -1);
1072
1073 /* free all temporaries */
1074 FREETMPS;
1075 assert (PL_tmps_ix == -1);
1076
1077 /* unwind all extra stacks */
1078 POPSTACK_TO (PL_mainstack);
1079
1080 /* unwind main stack */
1081 dounwind (-1);
1082 }
1083}
1084
1085static void
1086coro_destruct_perl (pTHX_ struct coro *coro)
1087{
1088 SV *svf [9];
1089
1090 {
1091 struct coro *current = SvSTATE_current;
1092
1093 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1094
1095 save_perl (aTHX_ current);
1096 load_perl (aTHX_ coro);
1097
1098 coro_unwind_stacks (aTHX);
1099 coro_destruct_stacks (aTHX);
1100
1101 // now save some sv's to be free'd later
1102 svf [0] = GvSV (PL_defgv);
1103 svf [1] = (SV *)GvAV (PL_defgv);
1104 svf [2] = GvSV (PL_errgv);
1105 svf [3] = (SV *)PL_defoutgv;
1106 svf [4] = PL_rs;
1107 svf [5] = GvSV (irsgv);
1108 svf [6] = (SV *)GvHV (PL_hintgv);
1109 svf [7] = PL_diehook;
1110 svf [8] = PL_warnhook;
1111 assert (9 == sizeof (svf) / sizeof (*svf));
1112
1113 load_perl (aTHX_ current);
1114 }
1115
1116 {
1117 int i;
1118
1119 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1120 SvREFCNT_dec (svf [i]);
1121
1122 SvREFCNT_dec (coro->saved_deffh);
1123 SvREFCNT_dec (coro->rouse_cb);
1124 SvREFCNT_dec (coro->invoke_cb);
1125 SvREFCNT_dec (coro->invoke_av);
1126 }
1127}
1128
1129INLINE void
653free_coro_mortal (pTHX) 1130free_coro_mortal (pTHX)
654{ 1131{
655 if (coro_mortal) 1132 if (expect_true (coro_mortal))
656 { 1133 {
657 SvREFCNT_dec (coro_mortal); 1134 SvREFCNT_dec (coro_mortal);
658 coro_mortal = 0; 1135 coro_mortal = 0;
659 } 1136 }
660} 1137}
… …
662static int 1139static int
663runops_trace (pTHX) 1140runops_trace (pTHX)
664{ 1141{
665 COP *oldcop = 0; 1142 COP *oldcop = 0;
666 int oldcxix = -2; 1143 int oldcxix = -2;
667 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
668 coro_cctx *cctx = coro->cctx;
669 1144
670 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1145 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
671 { 1146 {
672 PERL_ASYNC_CHECK (); 1147 PERL_ASYNC_CHECK ();
673 1148
674 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1149 if (cctx_current->flags & CC_TRACE_ALL)
675 { 1150 {
676 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1151 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
677 SV **bot, **top;
678 AV *av = newAV (); /* return values */
679 SV **cb;
680 runops_proc_t old_runops = PL_runops;
681 dSP;
682 ENTER;
683 SAVETMPS;
684 EXTEND (SP, 3);
685 PL_runops = RUNOPS_DEFAULT;
686
687 GV *gv = CvGV (cx->blk_sub.cv);
688 SV *fullname = sv_2mortal (newSV (0));
689 if (isGV (gv))
690 gv_efullname3 (fullname, gv, 0);
691
692 bot = PL_stack_base + cx->blk_oldsp + 1;
693 top = cx->blk_gimme == G_ARRAY ? SP + 1
694 : cx->blk_gimme == G_SCALAR ? bot + 1
695 : bot;
696
697 while (bot < top)
698 av_push (av, SvREFCNT_inc (*bot++));
699
700 PUSHMARK (SP);
701 PUSHs (&PL_sv_no);
702 PUSHs (fullname);
703 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
704 PUTBACK;
705 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
706 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
707 SPAGAIN;
708
709 FREETMPS;
710 LEAVE;
711 PL_runops = old_runops;
712 }
713
714 if (oldcop != PL_curcop)
715 {
716 oldcop = PL_curcop;
717
718 if (PL_curcop != &PL_compiling)
719 { 1152 {
1153 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1154 SV **bot, **top;
1155 AV *av = newAV (); /* return values */
720 SV **cb; 1156 SV **cb;
721 runops_proc_t old_runops = PL_runops;
722 dSP; 1157 dSP;
1158
1159 GV *gv = CvGV (cx->blk_sub.cv);
1160 SV *fullname = sv_2mortal (newSV (0));
1161 if (isGV (gv))
1162 gv_efullname3 (fullname, gv, 0);
1163
1164 bot = PL_stack_base + cx->blk_oldsp + 1;
1165 top = cx->blk_gimme == G_ARRAY ? SP + 1
1166 : cx->blk_gimme == G_SCALAR ? bot + 1
1167 : bot;
1168
1169 av_extend (av, top - bot);
1170 while (bot < top)
1171 av_push (av, SvREFCNT_inc_NN (*bot++));
1172
1173 PL_runops = RUNOPS_DEFAULT;
723 ENTER; 1174 ENTER;
724 SAVETMPS; 1175 SAVETMPS;
725 EXTEND (SP, 3); 1176 EXTEND (SP, 3);
726 PL_runops = RUNOPS_DEFAULT; 1177 PUSHMARK (SP);
1178 PUSHs (&PL_sv_no);
1179 PUSHs (fullname);
1180 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1181 PUTBACK;
1182 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1183 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1184 SPAGAIN;
1185 FREETMPS;
1186 LEAVE;
1187 PL_runops = runops_trace;
1188 }
727 1189
728 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1190 if (oldcop != PL_curcop)
1191 {
1192 oldcop = PL_curcop;
1193
1194 if (PL_curcop != &PL_compiling)
729 { 1195 {
730 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1196 SV **cb;
731 1197
732 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1198 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
733 { 1199 {
1200 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1201
1202 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1203 {
1204 dSP;
734 GV *gv = CvGV (cx->blk_sub.cv); 1205 GV *gv = CvGV (cx->blk_sub.cv);
735 SV *fullname = sv_2mortal (newSV (0)); 1206 SV *fullname = sv_2mortal (newSV (0));
1207
736 if (isGV (gv)) 1208 if (isGV (gv))
737 gv_efullname3 (fullname, gv, 0); 1209 gv_efullname3 (fullname, gv, 0);
738 1210
1211 PL_runops = RUNOPS_DEFAULT;
1212 ENTER;
1213 SAVETMPS;
1214 EXTEND (SP, 3);
1215 PUSHMARK (SP);
1216 PUSHs (&PL_sv_yes);
1217 PUSHs (fullname);
1218 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1219 PUTBACK;
1220 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1221 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1222 SPAGAIN;
1223 FREETMPS;
1224 LEAVE;
1225 PL_runops = runops_trace;
1226 }
1227
1228 oldcxix = cxstack_ix;
1229 }
1230
1231 if (cctx_current->flags & CC_TRACE_LINE)
1232 {
1233 dSP;
1234
1235 PL_runops = RUNOPS_DEFAULT;
1236 ENTER;
1237 SAVETMPS;
1238 EXTEND (SP, 3);
1239 PL_runops = RUNOPS_DEFAULT;
739 PUSHMARK (SP); 1240 PUSHMARK (SP);
740 PUSHs (&PL_sv_yes); 1241 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
741 PUSHs (fullname); 1242 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
742 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
743 PUTBACK; 1243 PUTBACK;
744 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1244 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
745 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1245 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
746 SPAGAIN; 1246 SPAGAIN;
1247 FREETMPS;
1248 LEAVE;
1249 PL_runops = runops_trace;
747 } 1250 }
748
749 oldcxix = cxstack_ix;
750 } 1251 }
751
752 if (cctx->flags & CC_TRACE_LINE)
753 {
754 PUSHMARK (SP);
755 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
756 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
757 PUTBACK;
758 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
759 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
760 SPAGAIN;
761 }
762
763 FREETMPS;
764 LEAVE;
765 PL_runops = old_runops;
766 } 1252 }
767 } 1253 }
768 } 1254 }
769 1255
770 TAINT_NOT; 1256 TAINT_NOT;
771 return 0; 1257 return 0;
772} 1258}
773 1259
774/* inject a fake call to Coro::State::_cctx_init into the execution */ 1260static struct CoroSLF cctx_ssl_frame;
775/* _cctx_init should be careful, as it could be called at almost any time */ 1261
776/* during execution of a perl program */ 1262static void
1263slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1264{
1265 ta->prev = 0;
1266}
1267
1268static int
1269slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1270{
1271 *frame = cctx_ssl_frame;
1272
1273 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1274}
1275
1276/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
777static void NOINLINE 1277static void NOINLINE
778prepare_cctx (pTHX_ coro_cctx *cctx) 1278cctx_prepare (pTHX)
779{ 1279{
780 dSP;
781 LOGOP myop;
782
783 PL_top_env = &PL_start_env; 1280 PL_top_env = &PL_start_env;
784 1281
785 if (cctx->flags & CC_TRACE) 1282 if (cctx_current->flags & CC_TRACE)
786 PL_runops = runops_trace; 1283 PL_runops = runops_trace;
787 1284
788 Zero (&myop, 1, LOGOP); 1285 /* we already must be executing an SLF op, there is no other valid way
789 myop.op_next = PL_op; 1286 * that can lead to creation of a new cctx */
790 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1287 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1288 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
791 1289
792 PUSHMARK (SP); 1290 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
793 EXTEND (SP, 2); 1291 cctx_ssl_frame = slf_frame;
794 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1292
795 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1293 slf_frame.prepare = slf_prepare_set_stacklevel;
796 PUTBACK; 1294 slf_frame.check = slf_check_set_stacklevel;
797 PL_op = (OP *)&myop; 1295}
798 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1296
799 SPAGAIN; 1297/* the tail of transfer: execute stuff we can only do after a transfer */
1298INLINE void
1299transfer_tail (pTHX)
1300{
1301 free_coro_mortal (aTHX);
800} 1302}
801 1303
802/* 1304/*
803 * this is a _very_ stripped down perl interpreter ;) 1305 * this is a _very_ stripped down perl interpreter ;)
804 */ 1306 */
805static void 1307static void
806coro_run (void *arg) 1308cctx_run (void *arg)
807{ 1309{
1310#ifdef USE_ITHREADS
1311# if CORO_PTHREAD
1312 PERL_SET_CONTEXT (coro_thx);
1313# endif
1314#endif
1315 {
808 dTHX; 1316 dTHX;
809 1317
810 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1318 /* normally we would need to skip the entersub here */
811 UNLOCK; 1319 /* not doing so will re-execute it, which is exactly what we want */
812
813 /* we now skip the entersub that lead to transfer() */
814 PL_op = PL_op->op_next; 1320 /* PL_nop = PL_nop->op_next */
815 1321
816 /* inject a fake subroutine call to cctx_init */ 1322 /* inject a fake subroutine call to cctx_init */
817 prepare_cctx (aTHX_ (coro_cctx *)arg); 1323 cctx_prepare (aTHX);
818 1324
1325 /* cctx_run is the alternative tail of transfer() */
1326 transfer_tail (aTHX);
1327
819 /* somebody or something will hit me for both perl_run and PL_restartop */ 1328 /* somebody or something will hit me for both perl_run and PL_restartop */
820 PL_restartop = PL_op; 1329 PL_restartop = PL_op;
821 perl_run (PL_curinterp); 1330 perl_run (PL_curinterp);
822
823 /* 1331 /*
1332 * Unfortunately, there is no way to get at the return values of the
1333 * coro body here, as perl_run destroys these
1334 */
1335
1336 /*
824 * If perl-run returns we assume exit() was being called or the coro 1337 * If perl-run returns we assume exit() was being called or the coro
825 * fell off the end, which seems to be the only valid (non-bug) 1338 * fell off the end, which seems to be the only valid (non-bug)
826 * reason for perl_run to return. We try to exit by jumping to the 1339 * reason for perl_run to return. We try to exit by jumping to the
827 * bootstrap-time "top" top_env, as we cannot restore the "main" 1340 * bootstrap-time "top" top_env, as we cannot restore the "main"
828 * coroutine as Coro has no such concept 1341 * coroutine as Coro has no such concept.
1342 * This actually isn't valid with the pthread backend, but OSes requiring
1343 * that backend are too broken to do it in a standards-compliant way.
829 */ 1344 */
830 PL_top_env = main_top_env; 1345 PL_top_env = main_top_env;
831 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1346 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1347 }
832} 1348}
833 1349
834static coro_cctx * 1350static coro_cctx *
835cctx_new () 1351cctx_new ()
836{ 1352{
837 coro_cctx *cctx; 1353 coro_cctx *cctx;
1354
1355 ++cctx_count;
1356 New (0, cctx, 1, coro_cctx);
1357
1358 cctx->gen = cctx_gen;
1359 cctx->flags = 0;
1360 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1361
1362 return cctx;
1363}
1364
1365/* create a new cctx only suitable as source */
1366static coro_cctx *
1367cctx_new_empty ()
1368{
1369 coro_cctx *cctx = cctx_new ();
1370
1371 cctx->sptr = 0;
1372 coro_create (&cctx->cctx, 0, 0, 0, 0);
1373
1374 return cctx;
1375}
1376
1377/* create a new cctx suitable as destination/running a perl interpreter */
1378static coro_cctx *
1379cctx_new_run ()
1380{
1381 coro_cctx *cctx = cctx_new ();
838 void *stack_start; 1382 void *stack_start;
839 size_t stack_size; 1383 size_t stack_size;
840 1384
841 ++cctx_count;
842
843 Newz (0, cctx, 1, coro_cctx);
844
845#if HAVE_MMAP 1385#if HAVE_MMAP
846
847 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1386 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
848 /* mmap supposedly does allocate-on-write for us */ 1387 /* mmap supposedly does allocate-on-write for us */
849 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1388 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
850 1389
851 if (cctx->sptr != (void *)-1) 1390 if (cctx->sptr != (void *)-1)
852 { 1391 {
853# if CORO_STACKGUARD 1392 #if CORO_STACKGUARD
854 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1393 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
855# endif 1394 #endif
856 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1395 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
857 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1396 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
858 cctx->flags |= CC_MAPPED; 1397 cctx->flags |= CC_MAPPED;
859 } 1398 }
860 else 1399 else
861#endif 1400#endif
862 { 1401 {
863 cctx->ssize = coro_stacksize * (long)sizeof (long); 1402 cctx->ssize = cctx_stacksize * (long)sizeof (long);
864 New (0, cctx->sptr, coro_stacksize, long); 1403 New (0, cctx->sptr, cctx_stacksize, long);
865 1404
866 if (!cctx->sptr) 1405 if (!cctx->sptr)
867 { 1406 {
868 perror ("FATAL: unable to allocate stack for coroutine"); 1407 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
869 _exit (EXIT_FAILURE); 1408 _exit (EXIT_FAILURE);
870 } 1409 }
871 1410
872 stack_start = cctx->sptr; 1411 stack_start = cctx->sptr;
873 stack_size = cctx->ssize; 1412 stack_size = cctx->ssize;
874 } 1413 }
875 1414
876 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1415 #if CORO_USE_VALGRIND
1416 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1417 #endif
1418
877 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1419 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
878 1420
879 return cctx; 1421 return cctx;
880} 1422}
881 1423
882static void 1424static void
883cctx_destroy (coro_cctx *cctx) 1425cctx_destroy (coro_cctx *cctx)
884{ 1426{
885 if (!cctx) 1427 if (!cctx)
886 return; 1428 return;
887 1429
1430 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1431
888 --cctx_count; 1432 --cctx_count;
1433 coro_destroy (&cctx->cctx);
889 1434
1435 /* coro_transfer creates new, empty cctx's */
1436 if (cctx->sptr)
1437 {
890#if CORO_USE_VALGRIND 1438 #if CORO_USE_VALGRIND
891 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1439 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
892#endif 1440 #endif
893 1441
894#if HAVE_MMAP 1442#if HAVE_MMAP
895 if (cctx->flags & CC_MAPPED) 1443 if (cctx->flags & CC_MAPPED)
896 munmap (cctx->sptr, cctx->ssize); 1444 munmap (cctx->sptr, cctx->ssize);
897 else 1445 else
898#endif 1446#endif
899 Safefree (cctx->sptr); 1447 Safefree (cctx->sptr);
1448 }
900 1449
901 Safefree (cctx); 1450 Safefree (cctx);
902} 1451}
1452
1453/* wether this cctx should be destructed */
1454#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
903 1455
904static coro_cctx * 1456static coro_cctx *
905cctx_get (pTHX) 1457cctx_get (pTHX)
906{ 1458{
907 while (cctx_first) 1459 while (expect_true (cctx_first))
908 { 1460 {
909 coro_cctx *cctx = cctx_first; 1461 coro_cctx *cctx = cctx_first;
910 cctx_first = cctx->next; 1462 cctx_first = cctx->next;
911 --cctx_idle; 1463 --cctx_idle;
912 1464
913 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1465 if (expect_true (!CCTX_EXPIRED (cctx)))
914 return cctx; 1466 return cctx;
915 1467
916 cctx_destroy (cctx); 1468 cctx_destroy (cctx);
917 } 1469 }
918 1470
919 return cctx_new (); 1471 return cctx_new_run ();
920} 1472}
921 1473
922static void 1474static void
923cctx_put (coro_cctx *cctx) 1475cctx_put (coro_cctx *cctx)
924{ 1476{
1477 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1478
925 /* free another cctx if overlimit */ 1479 /* free another cctx if overlimit */
926 if (cctx_idle >= MAX_IDLE_CCTX) 1480 if (expect_false (cctx_idle >= cctx_max_idle))
927 { 1481 {
928 coro_cctx *first = cctx_first; 1482 coro_cctx *first = cctx_first;
929 cctx_first = first->next; 1483 cctx_first = first->next;
930 --cctx_idle; 1484 --cctx_idle;
931 1485
… …
937 cctx_first = cctx; 1491 cctx_first = cctx;
938} 1492}
939 1493
940/** coroutine switching *****************************************************/ 1494/** coroutine switching *****************************************************/
941 1495
942static void NOINLINE 1496static void
943transfer_check (pTHX_ struct coro *prev, struct coro *next) 1497transfer_check (pTHX_ struct coro *prev, struct coro *next)
944{ 1498{
945 if (prev != next) 1499 /* TODO: throwing up here is considered harmful */
1500
1501 if (expect_true (prev != next))
946 { 1502 {
947 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1503 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
948 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1504 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
949 1505
950 if (next->flags & CF_RUNNING) 1506 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
951 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
952
953 if (next->flags & CF_DESTROYED)
954 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1507 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
955 1508
1509#if !PERL_VERSION_ATLEAST (5,10,0)
956 if (PL_lex_state != LEX_NOTPARSING) 1510 if (expect_false (PL_lex_state != LEX_NOTPARSING))
957 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1511 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1512#endif
958 } 1513 }
959} 1514}
960 1515
961/* always use the TRANSFER macro */ 1516/* always use the TRANSFER macro */
962static void NOINLINE 1517static void NOINLINE /* noinline so we have a fixed stackframe */
963transfer (pTHX_ struct coro *prev, struct coro *next) 1518transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
964{ 1519{
965 dSTACKLEVEL; 1520 dSTACKLEVEL;
966 1521
967 /* sometimes transfer is only called to set idle_sp */ 1522 /* sometimes transfer is only called to set idle_sp */
968 if (!next) 1523 if (expect_false (!prev))
969 { 1524 {
970 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1525 cctx_current->idle_sp = STACKLEVEL;
971 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1526 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
972 }
973 else if (prev != next)
974 { 1527 }
1528 else if (expect_true (prev != next))
1529 {
975 coro_cctx *prev__cctx; 1530 coro_cctx *cctx_prev;
976 1531
977 if (prev->flags & CF_NEW) 1532 if (expect_false (prev->flags & CF_NEW))
978 { 1533 {
979 /* create a new empty context */ 1534 /* create a new empty/source context */
980 Newz (0, prev->cctx, 1, coro_cctx);
981 prev->flags &= ~CF_NEW; 1535 prev->flags &= ~CF_NEW;
982 prev->flags |= CF_RUNNING; 1536 prev->flags |= CF_RUNNING;
983 } 1537 }
984 1538
985 prev->flags &= ~CF_RUNNING; 1539 prev->flags &= ~CF_RUNNING;
986 next->flags |= CF_RUNNING; 1540 next->flags |= CF_RUNNING;
987 1541
988 LOCK; 1542 /* first get rid of the old state */
1543 save_perl (aTHX_ prev);
989 1544
990 if (next->flags & CF_NEW) 1545 if (expect_false (next->flags & CF_NEW))
991 { 1546 {
992 /* need to start coroutine */ 1547 /* need to start coroutine */
993 next->flags &= ~CF_NEW; 1548 next->flags &= ~CF_NEW;
994 /* first get rid of the old state */
995 save_perl (aTHX_ prev);
996 /* setup coroutine call */ 1549 /* setup coroutine call */
997 setup_coro (aTHX_ next); 1550 coro_setup (aTHX_ next);
998 } 1551 }
999 else 1552 else
1553 load_perl (aTHX_ next);
1554
1555 /* possibly untie and reuse the cctx */
1556 if (expect_true (
1557 cctx_current->idle_sp == STACKLEVEL
1558 && !(cctx_current->flags & CC_TRACE)
1559 && !force_cctx
1560 ))
1000 { 1561 {
1001 /* coroutine already started */ 1562 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1002 save_perl (aTHX_ prev); 1563 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1003 load_perl (aTHX_ next); 1564
1565 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1566 /* without this the next cctx_get might destroy the running cctx while still in use */
1567 if (expect_false (CCTX_EXPIRED (cctx_current)))
1568 if (expect_true (!next->cctx))
1569 next->cctx = cctx_get (aTHX);
1570
1571 cctx_put (cctx_current);
1004 } 1572 }
1573 else
1574 prev->cctx = cctx_current;
1005 1575
1006 prev__cctx = prev->cctx; 1576 ++next->usecount;
1007 1577
1008 /* possibly "free" the cctx */ 1578 cctx_prev = cctx_current;
1009 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)) 1579 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1580
1581 next->cctx = 0;
1582
1583 if (expect_false (cctx_prev != cctx_current))
1010 { 1584 {
1011 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1585 cctx_prev->top_env = PL_top_env;
1012 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1586 PL_top_env = cctx_current->top_env;
1013 1587 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1014 prev->cctx = 0;
1015
1016 cctx_put (prev__cctx);
1017 } 1588 }
1018 1589
1019 if (!next->cctx) 1590 transfer_tail (aTHX);
1020 next->cctx = cctx_get (aTHX);
1021
1022 if (prev__cctx != next->cctx)
1023 {
1024 prev__cctx->top_env = PL_top_env;
1025 PL_top_env = next->cctx->top_env;
1026 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1027 }
1028
1029 free_coro_mortal (aTHX);
1030 UNLOCK;
1031 } 1591 }
1032} 1592}
1033 1593
1034struct transfer_args
1035{
1036 struct coro *prev, *next;
1037};
1038
1039#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1594#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1040#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1595#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1041 1596
1042/** high level stuff ********************************************************/ 1597/** high level stuff ********************************************************/
1043 1598
1044static int 1599static int
1045coro_state_destroy (pTHX_ struct coro *coro) 1600coro_state_destroy (pTHX_ struct coro *coro)
1046{ 1601{
1047 if (coro->flags & CF_DESTROYED) 1602 if (coro->flags & CF_DESTROYED)
1048 return 0; 1603 return 0;
1604
1605 if (coro->on_destroy && !PL_dirty)
1606 coro->on_destroy (aTHX_ coro);
1049 1607
1050 coro->flags |= CF_DESTROYED; 1608 coro->flags |= CF_DESTROYED;
1051 1609
1052 if (coro->flags & CF_READY) 1610 if (coro->flags & CF_READY)
1053 { 1611 {
1054 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1612 /* reduce nready, as destroying a ready coro effectively unreadies it */
1055 /* alternative: look through all ready queues and remove the coro */ 1613 /* alternative: look through all ready queues and remove the coro */
1056 LOCK;
1057 --coro_nready; 1614 --coro_nready;
1058 UNLOCK;
1059 } 1615 }
1060 else 1616 else
1061 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1617 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1062 1618
1063 if (coro->mainstack && coro->mainstack != main_mainstack) 1619 if (coro->mainstack
1064 { 1620 && coro->mainstack != main_mainstack
1065 struct coro temp; 1621 && coro->slot
1066 1622 && !PL_dirty)
1067 assert (!(coro->flags & CF_RUNNING));
1068
1069 Zero (&temp, 1, struct coro);
1070 temp.save = CORO_SAVE_ALL;
1071
1072 if (coro->flags & CF_RUNNING)
1073 croak ("FATAL: tried to destroy currently running coroutine");
1074
1075 save_perl (aTHX_ &temp);
1076 load_perl (aTHX_ coro); 1623 coro_destruct_perl (aTHX_ coro);
1077
1078 coro_destroy_stacks (aTHX);
1079
1080 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
1081
1082 coro->mainstack = 0;
1083 }
1084 1624
1085 cctx_destroy (coro->cctx); 1625 cctx_destroy (coro->cctx);
1626 SvREFCNT_dec (coro->startcv);
1086 SvREFCNT_dec (coro->args); 1627 SvREFCNT_dec (coro->args);
1628 SvREFCNT_dec (CORO_THROW);
1087 1629
1088 if (coro->next) coro->next->prev = coro->prev; 1630 if (coro->next) coro->next->prev = coro->prev;
1089 if (coro->prev) coro->prev->next = coro->next; 1631 if (coro->prev) coro->prev->next = coro->next;
1090 if (coro == coro_first) coro_first = coro->next; 1632 if (coro == coro_first) coro_first = coro->next;
1091 1633
… …
1129# define MGf_DUP 0 1671# define MGf_DUP 0
1130#endif 1672#endif
1131}; 1673};
1132 1674
1133static void 1675static void
1134prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1676prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1135{ 1677{
1136 ta->prev = SvSTATE (prev_sv); 1678 ta->prev = SvSTATE (prev_sv);
1137 ta->next = SvSTATE (next_sv); 1679 ta->next = SvSTATE (next_sv);
1138 TRANSFER_CHECK (*ta); 1680 TRANSFER_CHECK (*ta);
1139} 1681}
1140 1682
1141static void 1683static void
1142api_transfer (SV *prev_sv, SV *next_sv) 1684api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1143{ 1685{
1144 dTHX;
1145 struct transfer_args ta; 1686 struct coro_transfer_args ta;
1146 1687
1147 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1688 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1148 TRANSFER (ta); 1689 TRANSFER (ta, 1);
1690}
1691
1692/*****************************************************************************/
1693/* gensub: simple closure generation utility */
1694
1695#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1696
1697/* create a closure from XS, returns a code reference */
1698/* the arg can be accessed via GENSUB_ARG from the callback */
1699/* the callback must use dXSARGS/XSRETURN */
1700static SV *
1701gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1702{
1703 CV *cv = (CV *)newSV (0);
1704
1705 sv_upgrade ((SV *)cv, SVt_PVCV);
1706
1707 CvANON_on (cv);
1708 CvISXSUB_on (cv);
1709 CvXSUB (cv) = xsub;
1710 GENSUB_ARG = arg;
1711
1712 return newRV_noinc ((SV *)cv);
1713}
1714
1715/** Coro ********************************************************************/
1716
1717INLINE void
1718coro_enq (pTHX_ struct coro *coro)
1719{
1720 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1721
1722 SvREFCNT_inc_NN (coro->hv);
1723
1724 coro->next_ready = 0;
1725 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1726 ready [1] = coro;
1727}
1728
1729INLINE struct coro *
1730coro_deq (pTHX)
1731{
1732 int prio;
1733
1734 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1735 {
1736 struct coro **ready = coro_ready [prio];
1737
1738 if (ready [0])
1739 {
1740 struct coro *coro = ready [0];
1741 ready [0] = coro->next_ready;
1742 return coro;
1743 }
1744 }
1745
1746 return 0;
1149} 1747}
1150 1748
1151static int 1749static int
1152api_save (SV *coro_sv, int new_save)
1153{
1154 dTHX;
1155 struct coro *coro = SvSTATE (coro_sv);
1156 int old_save = coro->save;
1157
1158 if (new_save >= 0)
1159 coro->save = new_save;
1160
1161 return old_save;
1162}
1163
1164/** Coro ********************************************************************/
1165
1166static void
1167coro_enq (pTHX_ SV *coro_sv)
1168{
1169 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1170}
1171
1172static SV *
1173coro_deq (pTHX_ int min_prio)
1174{
1175 int prio = PRIO_MAX - PRIO_MIN;
1176
1177 min_prio -= PRIO_MIN;
1178 if (min_prio < 0)
1179 min_prio = 0;
1180
1181 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
1182 if (AvFILLp (coro_ready [prio]) >= 0)
1183 return av_shift (coro_ready [prio]);
1184
1185 return 0;
1186}
1187
1188static int
1189api_ready (SV *coro_sv) 1750api_ready (pTHX_ SV *coro_sv)
1190{ 1751{
1191 dTHX;
1192 struct coro *coro; 1752 struct coro *coro;
1193 1753 SV *sv_hook;
1194 if (SvROK (coro_sv)) 1754 void (*xs_hook)(void);
1195 coro_sv = SvRV (coro_sv);
1196 1755
1197 coro = SvSTATE (coro_sv); 1756 coro = SvSTATE (coro_sv);
1198 1757
1199 if (coro->flags & CF_READY) 1758 if (coro->flags & CF_READY)
1200 return 0; 1759 return 0;
1201 1760
1202 coro->flags |= CF_READY; 1761 coro->flags |= CF_READY;
1203 1762
1204 LOCK; 1763 sv_hook = coro_nready ? 0 : coro_readyhook;
1205 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1764 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1765
1766 coro_enq (aTHX_ coro);
1206 ++coro_nready; 1767 ++coro_nready;
1207 UNLOCK; 1768
1769 if (sv_hook)
1770 {
1771 dSP;
1772
1773 ENTER;
1774 SAVETMPS;
1775
1776 PUSHMARK (SP);
1777 PUTBACK;
1778 call_sv (sv_hook, G_VOID | G_DISCARD);
1779
1780 FREETMPS;
1781 LEAVE;
1782 }
1783
1784 if (xs_hook)
1785 xs_hook ();
1208 1786
1209 return 1; 1787 return 1;
1210} 1788}
1211 1789
1212static int 1790static int
1213api_is_ready (SV *coro_sv) 1791api_is_ready (pTHX_ SV *coro_sv)
1214{ 1792{
1215 dTHX;
1216 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1793 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1217} 1794}
1218 1795
1796/* expects to own a reference to next->hv */
1797INLINE void
1798prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1799{
1800 SV *prev_sv = SvRV (coro_current);
1801
1802 ta->prev = SvSTATE_hv (prev_sv);
1803 ta->next = next;
1804
1805 TRANSFER_CHECK (*ta);
1806
1807 SvRV_set (coro_current, (SV *)next->hv);
1808
1809 free_coro_mortal (aTHX);
1810 coro_mortal = prev_sv;
1811}
1812
1219static void 1813static void
1220prepare_schedule (pTHX_ struct transfer_args *ta) 1814prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1221{ 1815{
1222 SV *prev_sv, *next_sv;
1223
1224 for (;;) 1816 for (;;)
1225 { 1817 {
1226 LOCK; 1818 struct coro *next = coro_deq (aTHX);
1227 next_sv = coro_deq (aTHX_ PRIO_MIN);
1228 1819
1820 if (expect_true (next))
1821 {
1822 /* cannot transfer to destroyed coros, skip and look for next */
1823 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1824 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1825 else
1826 {
1827 next->flags &= ~CF_READY;
1828 --coro_nready;
1829
1830 prepare_schedule_to (aTHX_ ta, next);
1831 break;
1832 }
1833 }
1834 else
1835 {
1229 /* nothing to schedule: call the idle handler */ 1836 /* nothing to schedule: call the idle handler */
1230 if (!next_sv) 1837 if (SvROK (sv_idle)
1838 && SvOBJECT (SvRV (sv_idle)))
1839 {
1840 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1841 api_ready (aTHX_ SvRV (sv_idle));
1842 --coro_nready;
1843 }
1844 else
1845 {
1846 dSP;
1847
1848 ENTER;
1849 SAVETMPS;
1850
1851 PUSHMARK (SP);
1852 PUTBACK;
1853 call_sv (sv_idle, G_VOID | G_DISCARD);
1854
1855 FREETMPS;
1856 LEAVE;
1857 }
1858 }
1859 }
1860}
1861
1862INLINE void
1863prepare_cede (pTHX_ struct coro_transfer_args *ta)
1864{
1865 api_ready (aTHX_ coro_current);
1866 prepare_schedule (aTHX_ ta);
1867}
1868
1869INLINE void
1870prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1871{
1872 SV *prev = SvRV (coro_current);
1873
1874 if (coro_nready)
1875 {
1876 prepare_schedule (aTHX_ ta);
1877 api_ready (aTHX_ prev);
1878 }
1879 else
1880 prepare_nop (aTHX_ ta);
1881}
1882
1883static void
1884api_schedule (pTHX)
1885{
1886 struct coro_transfer_args ta;
1887
1888 prepare_schedule (aTHX_ &ta);
1889 TRANSFER (ta, 1);
1890}
1891
1892static void
1893api_schedule_to (pTHX_ SV *coro_sv)
1894{
1895 struct coro_transfer_args ta;
1896 struct coro *next = SvSTATE (coro_sv);
1897
1898 SvREFCNT_inc_NN (coro_sv);
1899 prepare_schedule_to (aTHX_ &ta, next);
1900}
1901
1902static int
1903api_cede (pTHX)
1904{
1905 struct coro_transfer_args ta;
1906
1907 prepare_cede (aTHX_ &ta);
1908
1909 if (expect_true (ta.prev != ta.next))
1910 {
1911 TRANSFER (ta, 1);
1912 return 1;
1913 }
1914 else
1915 return 0;
1916}
1917
1918static int
1919api_cede_notself (pTHX)
1920{
1921 if (coro_nready)
1922 {
1923 struct coro_transfer_args ta;
1924
1925 prepare_cede_notself (aTHX_ &ta);
1926 TRANSFER (ta, 1);
1927 return 1;
1928 }
1929 else
1930 return 0;
1931}
1932
1933static void
1934api_trace (pTHX_ SV *coro_sv, int flags)
1935{
1936 struct coro *coro = SvSTATE (coro_sv);
1937
1938 if (coro->flags & CF_RUNNING)
1939 croak ("cannot enable tracing on a running coroutine, caught");
1940
1941 if (flags & CC_TRACE)
1942 {
1943 if (!coro->cctx)
1944 coro->cctx = cctx_new_run ();
1945 else if (!(coro->cctx->flags & CC_TRACE))
1946 croak ("cannot enable tracing on coroutine with custom stack, caught");
1947
1948 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1949 }
1950 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1951 {
1952 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1953
1954 if (coro->flags & CF_RUNNING)
1955 PL_runops = RUNOPS_DEFAULT;
1956 else
1957 coro->slot->runops = RUNOPS_DEFAULT;
1958 }
1959}
1960
1961static void
1962coro_call_on_destroy (pTHX_ struct coro *coro)
1963{
1964 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1965 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1966
1967 if (on_destroyp)
1968 {
1969 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1970
1971 while (AvFILLp (on_destroy) >= 0)
1972 {
1973 dSP; /* don't disturb outer sp */
1974 SV *cb = av_pop (on_destroy);
1975
1976 PUSHMARK (SP);
1977
1978 if (statusp)
1979 {
1980 int i;
1981 AV *status = (AV *)SvRV (*statusp);
1982 EXTEND (SP, AvFILLp (status) + 1);
1983
1984 for (i = 0; i <= AvFILLp (status); ++i)
1985 PUSHs (AvARRAY (status)[i]);
1986 }
1987
1988 PUTBACK;
1989 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1990 }
1991 }
1992}
1993
1994static void
1995slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 int i;
1998 HV *hv = (HV *)SvRV (coro_current);
1999 AV *av = newAV ();
2000
2001 av_extend (av, items - 1);
2002 for (i = 0; i < items; ++i)
2003 av_push (av, SvREFCNT_inc_NN (arg [i]));
2004
2005 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2006
2007 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2008 api_ready (aTHX_ sv_manager);
2009
2010 frame->prepare = prepare_schedule;
2011 frame->check = slf_check_repeat;
2012
2013 /* as a minor optimisation, we could unwind all stacks here */
2014 /* but that puts extra pressure on pp_slf, and is not worth much */
2015 /*coro_unwind_stacks (aTHX);*/
2016}
2017
2018/*****************************************************************************/
2019/* async pool handler */
2020
2021static int
2022slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2023{
2024 HV *hv = (HV *)SvRV (coro_current);
2025 struct coro *coro = (struct coro *)frame->data;
2026
2027 if (!coro->invoke_cb)
2028 return 1; /* loop till we have invoke */
2029 else
2030 {
2031 hv_store (hv, "desc", sizeof ("desc") - 1,
2032 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2033
2034 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2035
2036 {
2037 dSP;
2038 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2039 PUTBACK;
2040 }
2041
2042 SvREFCNT_dec (GvAV (PL_defgv));
2043 GvAV (PL_defgv) = coro->invoke_av;
2044 coro->invoke_av = 0;
2045
2046 return 0;
2047 }
2048}
2049
2050static void
2051slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2052{
2053 HV *hv = (HV *)SvRV (coro_current);
2054 struct coro *coro = SvSTATE_hv ((SV *)hv);
2055
2056 if (expect_true (coro->saved_deffh))
2057 {
2058 /* subsequent iteration */
2059 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2060 coro->saved_deffh = 0;
2061
2062 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2063 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2064 {
2065 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2066 coro->invoke_av = newAV ();
2067
2068 frame->prepare = prepare_nop;
2069 }
2070 else
2071 {
2072 av_clear (GvAV (PL_defgv));
2073 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2074
2075 coro->prio = 0;
2076
2077 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2078 api_trace (aTHX_ coro_current, 0);
2079
2080 frame->prepare = prepare_schedule;
2081 av_push (av_async_pool, SvREFCNT_inc (hv));
2082 }
2083 }
2084 else
2085 {
2086 /* first iteration, simply fall through */
2087 frame->prepare = prepare_nop;
2088 }
2089
2090 frame->check = slf_check_pool_handler;
2091 frame->data = (void *)coro;
2092}
2093
2094/*****************************************************************************/
2095/* rouse callback */
2096
2097#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2098
2099static void
2100coro_rouse_callback (pTHX_ CV *cv)
2101{
2102 dXSARGS;
2103 SV *data = (SV *)GENSUB_ARG;
2104
2105 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2106 {
2107 /* first call, set args */
2108 SV *coro = SvRV (data);
2109 AV *av = newAV ();
2110
2111 SvRV_set (data, (SV *)av);
2112
2113 /* better take a full copy of the arguments */
2114 while (items--)
2115 av_store (av, items, newSVsv (ST (items)));
2116
2117 api_ready (aTHX_ coro);
2118 SvREFCNT_dec (coro);
2119 }
2120
2121 XSRETURN_EMPTY;
2122}
2123
2124static int
2125slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2126{
2127 SV *data = (SV *)frame->data;
2128
2129 if (CORO_THROW)
2130 return 0;
2131
2132 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2133 return 1;
2134
2135 /* now push all results on the stack */
2136 {
2137 dSP;
2138 AV *av = (AV *)SvRV (data);
2139 int i;
2140
2141 EXTEND (SP, AvFILLp (av) + 1);
2142 for (i = 0; i <= AvFILLp (av); ++i)
2143 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2144
2145 /* we have stolen the elements, so set length to zero and free */
2146 AvFILLp (av) = -1;
2147 av_undef (av);
2148
2149 PUTBACK;
2150 }
2151
2152 return 0;
2153}
2154
2155static void
2156slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2157{
2158 SV *cb;
2159
2160 if (items)
2161 cb = arg [0];
2162 else
2163 {
2164 struct coro *coro = SvSTATE_current;
2165
2166 if (!coro->rouse_cb)
2167 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2168
2169 cb = sv_2mortal (coro->rouse_cb);
2170 coro->rouse_cb = 0;
2171 }
2172
2173 if (!SvROK (cb)
2174 || SvTYPE (SvRV (cb)) != SVt_PVCV
2175 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2176 croak ("Coro::rouse_wait called with illegal callback argument,");
2177
2178 {
2179 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2180 SV *data = (SV *)GENSUB_ARG;
2181
2182 frame->data = (void *)data;
2183 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2184 frame->check = slf_check_rouse_wait;
2185 }
2186}
2187
2188static SV *
2189coro_new_rouse_cb (pTHX)
2190{
2191 HV *hv = (HV *)SvRV (coro_current);
2192 struct coro *coro = SvSTATE_hv (hv);
2193 SV *data = newRV_inc ((SV *)hv);
2194 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2195
2196 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2197 SvREFCNT_dec (data); /* magicext increases the refcount */
2198
2199 SvREFCNT_dec (coro->rouse_cb);
2200 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2201
2202 return cb;
2203}
2204
2205/*****************************************************************************/
2206/* schedule-like-function opcode (SLF) */
2207
2208static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2209static const CV *slf_cv;
2210static SV **slf_argv;
2211static int slf_argc, slf_arga; /* count, allocated */
2212static I32 slf_ax; /* top of stack, for restore */
2213
2214/* this restores the stack in the case we patched the entersub, to */
2215/* recreate the stack frame as perl will on following calls */
2216/* since entersub cleared the stack */
2217static OP *
2218pp_restore (pTHX)
2219{
2220 int i;
2221 SV **SP = PL_stack_base + slf_ax;
2222
2223 PUSHMARK (SP);
2224
2225 EXTEND (SP, slf_argc + 1);
2226
2227 for (i = 0; i < slf_argc; ++i)
2228 PUSHs (sv_2mortal (slf_argv [i]));
2229
2230 PUSHs ((SV *)CvGV (slf_cv));
2231
2232 RETURNOP (slf_restore.op_first);
2233}
2234
2235static void
2236slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2237{
2238 SV **arg = (SV **)slf_frame.data;
2239
2240 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2241}
2242
2243static void
2244slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2245{
2246 if (items != 2)
2247 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2248
2249 frame->prepare = slf_prepare_transfer;
2250 frame->check = slf_check_nop;
2251 frame->data = (void *)arg; /* let's hope it will stay valid */
2252}
2253
2254static void
2255slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2256{
2257 frame->prepare = prepare_schedule;
2258 frame->check = slf_check_nop;
2259}
2260
2261static void
2262slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2263{
2264 struct coro *next = (struct coro *)slf_frame.data;
2265
2266 SvREFCNT_inc_NN (next->hv);
2267 prepare_schedule_to (aTHX_ ta, next);
2268}
2269
2270static void
2271slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2272{
2273 if (!items)
2274 croak ("Coro::schedule_to expects a coroutine argument, caught");
2275
2276 frame->data = (void *)SvSTATE (arg [0]);
2277 frame->prepare = slf_prepare_schedule_to;
2278 frame->check = slf_check_nop;
2279}
2280
2281static void
2282slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 api_ready (aTHX_ SvRV (coro_current));
2285
2286 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2287}
2288
2289static void
2290slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2291{
2292 frame->prepare = prepare_cede;
2293 frame->check = slf_check_nop;
2294}
2295
2296static void
2297slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 frame->prepare = prepare_cede_notself;
2300 frame->check = slf_check_nop;
2301}
2302
2303/*
2304 * these not obviously related functions are all rolled into one
2305 * function to increase chances that they all will call transfer with the same
2306 * stack offset
2307 * SLF stands for "schedule-like-function".
2308 */
2309static OP *
2310pp_slf (pTHX)
2311{
2312 I32 checkmark; /* mark SP to see how many elements check has pushed */
2313
2314 /* set up the slf frame, unless it has already been set-up */
2315 /* the latter happens when a new coro has been started */
2316 /* or when a new cctx was attached to an existing coroutine */
2317 if (expect_true (!slf_frame.prepare))
2318 {
2319 /* first iteration */
2320 dSP;
2321 SV **arg = PL_stack_base + TOPMARK + 1;
2322 int items = SP - arg; /* args without function object */
2323 SV *gv = *sp;
2324
2325 /* do a quick consistency check on the "function" object, and if it isn't */
2326 /* for us, divert to the real entersub */
2327 if (SvTYPE (gv) != SVt_PVGV
2328 || !GvCV (gv)
2329 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2330 return PL_ppaddr[OP_ENTERSUB](aTHX);
2331
2332 if (!(PL_op->op_flags & OPf_STACKED))
2333 {
2334 /* ampersand-form of call, use @_ instead of stack */
2335 AV *av = GvAV (PL_defgv);
2336 arg = AvARRAY (av);
2337 items = AvFILLp (av) + 1;
2338 }
2339
2340 /* now call the init function, which needs to set up slf_frame */
2341 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2342 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2343
2344 /* pop args */
2345 SP = PL_stack_base + POPMARK;
2346
2347 PUTBACK;
2348 }
2349
2350 /* now that we have a slf_frame, interpret it! */
2351 /* we use a callback system not to make the code needlessly */
2352 /* complicated, but so we can run multiple perl coros from one cctx */
2353
2354 do
2355 {
2356 struct coro_transfer_args ta;
2357
2358 slf_frame.prepare (aTHX_ &ta);
2359 TRANSFER (ta, 0);
2360
2361 checkmark = PL_stack_sp - PL_stack_base;
2362 }
2363 while (slf_frame.check (aTHX_ &slf_frame));
2364
2365 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2366
2367 /* exception handling */
2368 if (expect_false (CORO_THROW))
2369 {
2370 SV *exception = sv_2mortal (CORO_THROW);
2371
2372 CORO_THROW = 0;
2373 sv_setsv (ERRSV, exception);
2374 croak (0);
2375 }
2376
2377 /* return value handling - mostly like entersub */
2378 /* make sure we put something on the stack in scalar context */
2379 if (GIMME_V == G_SCALAR)
2380 {
2381 dSP;
2382 SV **bot = PL_stack_base + checkmark;
2383
2384 if (sp == bot) /* too few, push undef */
2385 bot [1] = &PL_sv_undef;
2386 else if (sp != bot + 1) /* too many, take last one */
2387 bot [1] = *sp;
2388
2389 SP = bot + 1;
2390
2391 PUTBACK;
2392 }
2393
2394 return NORMAL;
2395}
2396
2397static void
2398api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2399{
2400 int i;
2401 SV **arg = PL_stack_base + ax;
2402 int items = PL_stack_sp - arg + 1;
2403
2404 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2405
2406 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2407 && PL_op->op_ppaddr != pp_slf)
2408 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2409
2410 CvFLAGS (cv) |= CVf_SLF;
2411 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2412 slf_cv = cv;
2413
2414 /* we patch the op, and then re-run the whole call */
2415 /* we have to put the same argument on the stack for this to work */
2416 /* and this will be done by pp_restore */
2417 slf_restore.op_next = (OP *)&slf_restore;
2418 slf_restore.op_type = OP_CUSTOM;
2419 slf_restore.op_ppaddr = pp_restore;
2420 slf_restore.op_first = PL_op;
2421
2422 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2423
2424 if (PL_op->op_flags & OPf_STACKED)
2425 {
2426 if (items > slf_arga)
2427 {
2428 slf_arga = items;
2429 free (slf_argv);
2430 slf_argv = malloc (slf_arga * sizeof (SV *));
2431 }
2432
2433 slf_argc = items;
2434
2435 for (i = 0; i < items; ++i)
2436 slf_argv [i] = SvREFCNT_inc (arg [i]);
2437 }
2438 else
2439 slf_argc = 0;
2440
2441 PL_op->op_ppaddr = pp_slf;
2442 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2443
2444 PL_op = (OP *)&slf_restore;
2445}
2446
2447/*****************************************************************************/
2448/* dynamic wind */
2449
2450static void
2451on_enterleave_call (pTHX_ SV *cb)
2452{
2453 dSP;
2454
2455 PUSHSTACK;
2456
2457 PUSHMARK (SP);
2458 PUTBACK;
2459 call_sv (cb, G_VOID | G_DISCARD);
2460 SPAGAIN;
2461
2462 POPSTACK;
2463}
2464
2465static SV *
2466coro_avp_pop_and_free (pTHX_ AV **avp)
2467{
2468 AV *av = *avp;
2469 SV *res = av_pop (av);
2470
2471 if (AvFILLp (av) < 0)
2472 {
2473 *avp = 0;
2474 SvREFCNT_dec (av);
2475 }
2476
2477 return res;
2478}
2479
2480static void
2481coro_pop_on_enter (pTHX_ void *coro)
2482{
2483 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2484 SvREFCNT_dec (cb);
2485}
2486
2487static void
2488coro_pop_on_leave (pTHX_ void *coro)
2489{
2490 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2491 on_enterleave_call (aTHX_ sv_2mortal (cb));
2492}
2493
2494/*****************************************************************************/
2495/* PerlIO::cede */
2496
2497typedef struct
2498{
2499 PerlIOBuf base;
2500 NV next, every;
2501} PerlIOCede;
2502
2503static IV
2504PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2505{
2506 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2507
2508 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2509 self->next = nvtime () + self->every;
2510
2511 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2512}
2513
2514static SV *
2515PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2516{
2517 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2518
2519 return newSVnv (self->every);
2520}
2521
2522static IV
2523PerlIOCede_flush (pTHX_ PerlIO *f)
2524{
2525 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2526 double now = nvtime ();
2527
2528 if (now >= self->next)
2529 {
2530 api_cede (aTHX);
2531 self->next = now + self->every;
2532 }
2533
2534 return PerlIOBuf_flush (aTHX_ f);
2535}
2536
2537static PerlIO_funcs PerlIO_cede =
2538{
2539 sizeof(PerlIO_funcs),
2540 "cede",
2541 sizeof(PerlIOCede),
2542 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2543 PerlIOCede_pushed,
2544 PerlIOBuf_popped,
2545 PerlIOBuf_open,
2546 PerlIOBase_binmode,
2547 PerlIOCede_getarg,
2548 PerlIOBase_fileno,
2549 PerlIOBuf_dup,
2550 PerlIOBuf_read,
2551 PerlIOBuf_unread,
2552 PerlIOBuf_write,
2553 PerlIOBuf_seek,
2554 PerlIOBuf_tell,
2555 PerlIOBuf_close,
2556 PerlIOCede_flush,
2557 PerlIOBuf_fill,
2558 PerlIOBase_eof,
2559 PerlIOBase_error,
2560 PerlIOBase_clearerr,
2561 PerlIOBase_setlinebuf,
2562 PerlIOBuf_get_base,
2563 PerlIOBuf_bufsiz,
2564 PerlIOBuf_get_ptr,
2565 PerlIOBuf_get_cnt,
2566 PerlIOBuf_set_ptrcnt,
2567};
2568
2569/*****************************************************************************/
2570/* Coro::Semaphore & Coro::Signal */
2571
2572static SV *
2573coro_waitarray_new (pTHX_ int count)
2574{
2575 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2576 AV *av = newAV ();
2577 SV **ary;
2578
2579 /* unfortunately, building manually saves memory */
2580 Newx (ary, 2, SV *);
2581 AvALLOC (av) = ary;
2582#if PERL_VERSION_ATLEAST (5,10,0)
2583 AvARRAY (av) = ary;
2584#else
2585 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2586 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2587 SvPVX ((SV *)av) = (char *)ary;
2588#endif
2589 AvMAX (av) = 1;
2590 AvFILLp (av) = 0;
2591 ary [0] = newSViv (count);
2592
2593 return newRV_noinc ((SV *)av);
2594}
2595
2596/* semaphore */
2597
2598static void
2599coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2600{
2601 SV *count_sv = AvARRAY (av)[0];
2602 IV count = SvIVX (count_sv);
2603
2604 count += adjust;
2605 SvIVX (count_sv) = count;
2606
2607 /* now wake up as many waiters as are expected to lock */
2608 while (count > 0 && AvFILLp (av) > 0)
2609 {
2610 SV *cb;
2611
2612 /* swap first two elements so we can shift a waiter */
2613 AvARRAY (av)[0] = AvARRAY (av)[1];
2614 AvARRAY (av)[1] = count_sv;
2615 cb = av_shift (av);
2616
2617 if (SvOBJECT (cb))
2618 {
2619 api_ready (aTHX_ cb);
2620 --count;
2621 }
2622 else if (SvTYPE (cb) == SVt_PVCV)
1231 { 2623 {
1232 dSP; 2624 dSP;
1233 UNLOCK;
1234
1235 ENTER;
1236 SAVETMPS;
1237
1238 PUSHMARK (SP); 2625 PUSHMARK (SP);
2626 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1239 PUTBACK; 2627 PUTBACK;
1240 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 2628 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1241
1242 FREETMPS;
1243 LEAVE;
1244 continue;
1245 } 2629 }
1246 2630
1247 ta->next = SvSTATE (next_sv); 2631 SvREFCNT_dec (cb);
2632 }
2633}
1248 2634
1249 /* cannot transfer to destroyed coros, skip and look for next */ 2635static void
1250 if (ta->next->flags & CF_DESTROYED) 2636coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2637{
2638 /* call $sem->adjust (0) to possibly wake up some other waiters */
2639 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2640}
2641
2642static int
2643slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2644{
2645 AV *av = (AV *)frame->data;
2646 SV *count_sv = AvARRAY (av)[0];
2647
2648 /* if we are about to throw, don't actually acquire the lock, just throw */
2649 if (CORO_THROW)
2650 return 0;
2651 else if (SvIVX (count_sv) > 0)
2652 {
2653 SvSTATE_current->on_destroy = 0;
2654
2655 if (acquire)
2656 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2657 else
2658 coro_semaphore_adjust (aTHX_ av, 0);
2659
2660 return 0;
2661 }
2662 else
2663 {
2664 int i;
2665 /* if we were woken up but can't down, we look through the whole */
2666 /* waiters list and only add us if we aren't in there already */
2667 /* this avoids some degenerate memory usage cases */
2668
2669 for (i = 1; i <= AvFILLp (av); ++i)
2670 if (AvARRAY (av)[i] == SvRV (coro_current))
2671 return 1;
2672
2673 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2674 return 1;
2675 }
2676}
2677
2678static int
2679slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2682}
2683
2684static int
2685slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2686{
2687 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2688}
2689
2690static void
2691slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2692{
2693 AV *av = (AV *)SvRV (arg [0]);
2694
2695 if (SvIVX (AvARRAY (av)[0]) > 0)
2696 {
2697 frame->data = (void *)av;
2698 frame->prepare = prepare_nop;
2699 }
2700 else
2701 {
2702 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2703
2704 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2705 frame->prepare = prepare_schedule;
2706
2707 /* to avoid race conditions when a woken-up coro gets terminated */
2708 /* we arrange for a temporary on_destroy that calls adjust (0) */
2709 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2710 }
2711}
2712
2713static void
2714slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2715{
2716 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2717 frame->check = slf_check_semaphore_down;
2718}
2719
2720static void
2721slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2722{
2723 if (items >= 2)
2724 {
2725 /* callback form */
2726 AV *av = (AV *)SvRV (arg [0]);
2727 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2728
2729 av_push (av, SvREFCNT_inc_NN (cb_cv));
2730
2731 if (SvIVX (AvARRAY (av)[0]) > 0)
2732 coro_semaphore_adjust (aTHX_ av, 0);
2733
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2740 frame->check = slf_check_semaphore_wait;
2741 }
2742}
2743
2744/* signal */
2745
2746static void
2747coro_signal_wake (pTHX_ AV *av, int count)
2748{
2749 SvIVX (AvARRAY (av)[0]) = 0;
2750
2751 /* now signal count waiters */
2752 while (count > 0 && AvFILLp (av) > 0)
2753 {
2754 SV *cb;
2755
2756 /* swap first two elements so we can shift a waiter */
2757 cb = AvARRAY (av)[0];
2758 AvARRAY (av)[0] = AvARRAY (av)[1];
2759 AvARRAY (av)[1] = cb;
2760
2761 cb = av_shift (av);
2762
2763 if (SvTYPE (cb) == SVt_PVCV)
1251 { 2764 {
2765 dSP;
2766 PUSHMARK (SP);
2767 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1252 UNLOCK; 2768 PUTBACK;
1253 SvREFCNT_dec (next_sv); 2769 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1254 /* coro_nready is already taken care of by destroy */
1255 continue;
1256 } 2770 }
2771 else
2772 {
2773 api_ready (aTHX_ cb);
2774 sv_setiv (cb, 0); /* signal waiter */
2775 }
1257 2776
1258 --coro_nready; 2777 SvREFCNT_dec (cb);
1259 UNLOCK;
1260 break;
1261 }
1262 2778
1263 /* free this only after the transfer */ 2779 --count;
1264 prev_sv = SvRV (coro_current); 2780 }
1265 ta->prev = SvSTATE (prev_sv);
1266 TRANSFER_CHECK (*ta);
1267 assert (ta->next->flags & CF_READY);
1268 ta->next->flags &= ~CF_READY;
1269 SvRV_set (coro_current, next_sv);
1270
1271 LOCK;
1272 free_coro_mortal (aTHX);
1273 coro_mortal = prev_sv;
1274 UNLOCK;
1275}
1276
1277static void
1278prepare_cede (pTHX_ struct transfer_args *ta)
1279{
1280 api_ready (coro_current);
1281 prepare_schedule (aTHX_ ta);
1282} 2781}
1283 2782
1284static int 2783static int
1285prepare_cede_notself (pTHX_ struct transfer_args *ta) 2784slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
1286{ 2785{
1287 if (coro_nready) 2786 /* if we are about to throw, also stop waiting */
2787 return SvROK ((SV *)frame->data) && !CORO_THROW;
2788}
2789
2790static void
2791slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2792{
2793 AV *av = (AV *)SvRV (arg [0]);
2794
2795 if (items >= 2)
2796 {
2797 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2798 av_push (av, SvREFCNT_inc_NN (cb_cv));
2799
2800 if (SvIVX (AvARRAY (av)[0]))
2801 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2802
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
1288 { 2805 }
1289 SV *prev = SvRV (coro_current); 2806 else if (SvIVX (AvARRAY (av)[0]))
1290 prepare_schedule (aTHX_ ta); 2807 {
1291 api_ready (prev); 2808 SvIVX (AvARRAY (av)[0]) = 0;
1292 return 1; 2809 frame->prepare = prepare_nop;
2810 frame->check = slf_check_nop;
1293 } 2811 }
1294 else 2812 else
2813 {
2814 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2815
2816 av_push (av, waiter);
2817
2818 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2819 frame->prepare = prepare_schedule;
2820 frame->check = slf_check_signal_wait;
2821 }
2822}
2823
2824/*****************************************************************************/
2825/* Coro::AIO */
2826
2827#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2828
2829/* helper storage struct */
2830struct io_state
2831{
2832 int errorno;
2833 I32 laststype; /* U16 in 5.10.0 */
2834 int laststatval;
2835 Stat_t statcache;
2836};
2837
2838static void
2839coro_aio_callback (pTHX_ CV *cv)
2840{
2841 dXSARGS;
2842 AV *state = (AV *)GENSUB_ARG;
2843 SV *coro = av_pop (state);
2844 SV *data_sv = newSV (sizeof (struct io_state));
2845
2846 av_extend (state, items - 1);
2847
2848 sv_upgrade (data_sv, SVt_PV);
2849 SvCUR_set (data_sv, sizeof (struct io_state));
2850 SvPOK_only (data_sv);
2851
2852 {
2853 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2854
2855 data->errorno = errno;
2856 data->laststype = PL_laststype;
2857 data->laststatval = PL_laststatval;
2858 data->statcache = PL_statcache;
2859 }
2860
2861 /* now build the result vector out of all the parameters and the data_sv */
2862 {
2863 int i;
2864
2865 for (i = 0; i < items; ++i)
2866 av_push (state, SvREFCNT_inc_NN (ST (i)));
2867 }
2868
2869 av_push (state, data_sv);
2870
2871 api_ready (aTHX_ coro);
2872 SvREFCNT_dec (coro);
2873 SvREFCNT_dec ((AV *)state);
2874}
2875
2876static int
2877slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2878{
2879 AV *state = (AV *)frame->data;
2880
2881 /* if we are about to throw, return early */
2882 /* this does not cancel the aio request, but at least */
2883 /* it quickly returns */
2884 if (CORO_THROW)
1295 return 0; 2885 return 0;
1296}
1297 2886
1298static void 2887 /* one element that is an RV? repeat! */
1299api_schedule (void) 2888 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
1300{
1301 dTHX;
1302 struct transfer_args ta;
1303
1304 prepare_schedule (aTHX_ &ta);
1305 TRANSFER (ta);
1306}
1307
1308static int
1309api_cede (void)
1310{
1311 dTHX;
1312 struct transfer_args ta;
1313
1314 prepare_cede (aTHX_ &ta);
1315
1316 if (ta.prev != ta.next)
1317 {
1318 TRANSFER (ta);
1319 return 1; 2889 return 1;
2890
2891 /* restore status */
2892 {
2893 SV *data_sv = av_pop (state);
2894 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2895
2896 errno = data->errorno;
2897 PL_laststype = data->laststype;
2898 PL_laststatval = data->laststatval;
2899 PL_statcache = data->statcache;
2900
2901 SvREFCNT_dec (data_sv);
1320 } 2902 }
1321 else 2903
2904 /* push result values */
2905 {
2906 dSP;
2907 int i;
2908
2909 EXTEND (SP, AvFILLp (state) + 1);
2910 for (i = 0; i <= AvFILLp (state); ++i)
2911 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2912
2913 PUTBACK;
2914 }
2915
1322 return 0; 2916 return 0;
1323} 2917}
1324 2918
1325static int 2919static void
1326api_cede_notself (void) 2920slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1327{ 2921{
1328 dTHX; 2922 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1329 struct transfer_args ta; 2923 SV *coro_hv = SvRV (coro_current);
2924 struct coro *coro = SvSTATE_hv (coro_hv);
1330 2925
1331 if (prepare_cede_notself (aTHX_ &ta)) 2926 /* put our coroutine id on the state arg */
1332 { 2927 av_push (state, SvREFCNT_inc_NN (coro_hv));
1333 TRANSFER (ta); 2928
1334 return 1; 2929 /* first see whether we have a non-zero priority and set it as AIO prio */
2930 if (coro->prio)
1335 } 2931 {
1336 else 2932 dSP;
1337 return 0;
1338}
1339 2933
2934 static SV *prio_cv;
2935 static SV *prio_sv;
2936
2937 if (expect_false (!prio_cv))
2938 {
2939 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2940 prio_sv = newSViv (0);
2941 }
2942
2943 PUSHMARK (SP);
2944 sv_setiv (prio_sv, coro->prio);
2945 XPUSHs (prio_sv);
2946
2947 PUTBACK;
2948 call_sv (prio_cv, G_VOID | G_DISCARD);
2949 }
2950
2951 /* now call the original request */
2952 {
2953 dSP;
2954 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2955 int i;
2956
2957 PUSHMARK (SP);
2958
2959 /* first push all args to the stack */
2960 EXTEND (SP, items + 1);
2961
2962 for (i = 0; i < items; ++i)
2963 PUSHs (arg [i]);
2964
2965 /* now push the callback closure */
2966 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2967
2968 /* now call the AIO function - we assume our request is uncancelable */
2969 PUTBACK;
2970 call_sv ((SV *)req, G_VOID | G_DISCARD);
2971 }
2972
2973 /* now that the requets is going, we loop toll we have a result */
2974 frame->data = (void *)state;
2975 frame->prepare = prepare_schedule;
2976 frame->check = slf_check_aio_req;
2977}
2978
2979static void
2980coro_aio_req_xs (pTHX_ CV *cv)
2981{
2982 dXSARGS;
2983
2984 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2985
2986 XSRETURN_EMPTY;
2987}
2988
2989/*****************************************************************************/
2990
2991#if CORO_CLONE
2992# include "clone.c"
2993#endif
2994
1340MODULE = Coro::State PACKAGE = Coro::State 2995MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1341 2996
1342PROTOTYPES: DISABLE 2997PROTOTYPES: DISABLE
1343 2998
1344BOOT: 2999BOOT:
1345{ 3000{
1346#ifdef USE_ITHREADS 3001#ifdef USE_ITHREADS
1347 MUTEX_INIT (&coro_mutex); 3002# if CORO_PTHREAD
3003 coro_thx = PERL_GET_CONTEXT;
3004# endif
1348#endif 3005#endif
1349 BOOT_PAGESIZE; 3006 BOOT_PAGESIZE;
3007
3008 cctx_current = cctx_new_empty ();
3009
3010 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
3011 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3012
3013 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
3014 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
3015 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
3016
3017 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
3018 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
3019 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1350 3020
1351 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3021 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1352 3022
1353 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3023 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1354 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3024 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1355 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 3025 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1356 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 3026 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1357 3027
1358 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1359 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1360 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1361 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1362 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1363 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1364 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1365
1366 main_mainstack = PL_mainstack; 3028 main_mainstack = PL_mainstack;
1367 main_top_env = PL_top_env; 3029 main_top_env = PL_top_env;
1368 3030
1369 while (main_top_env->je_prev) 3031 while (main_top_env->je_prev)
1370 main_top_env = main_top_env->je_prev; 3032 main_top_env = main_top_env->je_prev;
1371 3033
3034 {
3035 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3036
3037 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3038 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3039
3040 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3041 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3042 }
3043
1372 coroapi.ver = CORO_API_VERSION; 3044 coroapi.ver = CORO_API_VERSION;
3045 coroapi.rev = CORO_API_REVISION;
3046
1373 coroapi.transfer = api_transfer; 3047 coroapi.transfer = api_transfer;
1374 3048
3049 coroapi.sv_state = SvSTATE_;
3050 coroapi.execute_slf = api_execute_slf;
3051 coroapi.prepare_nop = prepare_nop;
3052 coroapi.prepare_schedule = prepare_schedule;
3053 coroapi.prepare_cede = prepare_cede;
3054 coroapi.prepare_cede_notself = prepare_cede_notself;
3055
3056 {
3057 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3058
3059 if (!svp) croak ("Time::HiRes is required");
3060 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3061
3062 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3063
3064 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3065 u2time = INT2PTR (double (*)(), SvIV (*svp));
3066 }
3067
1375 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3068 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1376} 3069}
1377 3070
1378SV * 3071SV *
1379new (char *klass, ...) 3072new (char *klass, ...)
3073 ALIAS:
3074 Coro::new = 1
1380 CODE: 3075 CODE:
1381{ 3076{
1382 struct coro *coro; 3077 struct coro *coro;
3078 MAGIC *mg;
1383 HV *hv; 3079 HV *hv;
3080 CV *cb;
1384 int i; 3081 int i;
1385 3082
3083 if (items > 1)
3084 {
3085 cb = coro_sv_2cv (aTHX_ ST (1));
3086
3087 if (!ix)
3088 {
3089 if (CvISXSUB (cb))
3090 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3091
3092 if (!CvROOT (cb))
3093 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3094 }
3095 }
3096
1386 Newz (0, coro, 1, struct coro); 3097 Newz (0, coro, 1, struct coro);
1387 coro->args = newAV (); 3098 coro->args = newAV ();
1388 coro->save = CORO_SAVE_DEF;
1389 coro->flags = CF_NEW; 3099 coro->flags = CF_NEW;
1390 3100
1391 if (coro_first) coro_first->prev = coro; 3101 if (coro_first) coro_first->prev = coro;
1392 coro->next = coro_first; 3102 coro->next = coro_first;
1393 coro_first = coro; 3103 coro_first = coro;
1394 3104
1395 coro->hv = hv = newHV (); 3105 coro->hv = hv = newHV ();
1396 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 3106 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3107 mg->mg_flags |= MGf_DUP;
1397 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3108 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1398 3109
3110 if (items > 1)
3111 {
3112 av_extend (coro->args, items - 1 + ix - 1);
3113
3114 if (ix)
3115 {
3116 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3117 cb = cv_coro_run;
3118 }
3119
3120 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3121
1399 for (i = 1; i < items; i++) 3122 for (i = 2; i < items; i++)
1400 av_push (coro->args, newSVsv (ST (i))); 3123 av_push (coro->args, newSVsv (ST (i)));
3124 }
1401} 3125}
1402 OUTPUT: 3126 OUTPUT:
1403 RETVAL 3127 RETVAL
1404 3128
1405int 3129void
1406save (SV *coro, int new_save = -1) 3130transfer (...)
3131 PROTOTYPE: $$
1407 CODE: 3132 CODE:
1408 RETVAL = api_save (coro, new_save); 3133 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1409 OUTPUT:
1410 RETVAL
1411
1412int
1413save_also (SV *coro_sv, int save_also)
1414 CODE:
1415{
1416 struct coro *coro = SvSTATE (coro_sv);
1417 RETVAL = coro->save;
1418 coro->save |= save_also;
1419}
1420 OUTPUT:
1421 RETVAL
1422
1423void
1424_set_stacklevel (...)
1425 ALIAS:
1426 Coro::State::transfer = 1
1427 Coro::schedule = 2
1428 Coro::cede = 3
1429 Coro::cede_notself = 4
1430 CODE:
1431{
1432 struct transfer_args ta;
1433
1434 switch (ix)
1435 {
1436 case 0:
1437 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1438 ta.next = 0;
1439 break;
1440
1441 case 1:
1442 if (items != 2)
1443 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1444
1445 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1446 break;
1447
1448 case 2:
1449 prepare_schedule (aTHX_ &ta);
1450 break;
1451
1452 case 3:
1453 prepare_cede (aTHX_ &ta);
1454 break;
1455
1456 case 4:
1457 if (!prepare_cede_notself (aTHX_ &ta))
1458 XSRETURN_EMPTY;
1459
1460 break;
1461 }
1462
1463 BARRIER;
1464 TRANSFER (ta);
1465
1466 if (GIMME_V != G_VOID && ta.next != ta.prev)
1467 XSRETURN_YES;
1468}
1469 3134
1470bool 3135bool
1471_destroy (SV *coro_sv) 3136_destroy (SV *coro_sv)
1472 CODE: 3137 CODE:
1473 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3138 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1474 OUTPUT: 3139 OUTPUT:
1475 RETVAL 3140 RETVAL
1476 3141
1477void 3142void
1478_exit (code) 3143_exit (int code)
1479 int code
1480 PROTOTYPE: $ 3144 PROTOTYPE: $
1481 CODE: 3145 CODE:
1482 _exit (code); 3146 _exit (code);
1483 3147
3148SV *
3149clone (Coro::State coro)
3150 CODE:
3151{
3152#if CORO_CLONE
3153 struct coro *ncoro = coro_clone (aTHX_ coro);
3154 MAGIC *mg;
3155 /* TODO: too much duplication */
3156 ncoro->hv = newHV ();
3157 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3158 mg->mg_flags |= MGf_DUP;
3159 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3160#else
3161 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3162#endif
3163}
3164 OUTPUT:
3165 RETVAL
3166
1484int 3167int
1485cctx_stacksize (int new_stacksize = 0) 3168cctx_stacksize (int new_stacksize = 0)
3169 PROTOTYPE: ;$
1486 CODE: 3170 CODE:
1487 RETVAL = coro_stacksize; 3171 RETVAL = cctx_stacksize;
1488 if (new_stacksize) 3172 if (new_stacksize)
3173 {
1489 coro_stacksize = new_stacksize; 3174 cctx_stacksize = new_stacksize;
3175 ++cctx_gen;
3176 }
1490 OUTPUT: 3177 OUTPUT:
1491 RETVAL 3178 RETVAL
1492 3179
1493int 3180int
3181cctx_max_idle (int max_idle = 0)
3182 PROTOTYPE: ;$
3183 CODE:
3184 RETVAL = cctx_max_idle;
3185 if (max_idle > 1)
3186 cctx_max_idle = max_idle;
3187 OUTPUT:
3188 RETVAL
3189
3190int
1494cctx_count () 3191cctx_count ()
3192 PROTOTYPE:
1495 CODE: 3193 CODE:
1496 RETVAL = cctx_count; 3194 RETVAL = cctx_count;
1497 OUTPUT: 3195 OUTPUT:
1498 RETVAL 3196 RETVAL
1499 3197
1500int 3198int
1501cctx_idle () 3199cctx_idle ()
3200 PROTOTYPE:
1502 CODE: 3201 CODE:
1503 RETVAL = cctx_idle; 3202 RETVAL = cctx_idle;
1504 OUTPUT: 3203 OUTPUT:
1505 RETVAL 3204 RETVAL
1506 3205
1507void 3206void
1508list () 3207list ()
3208 PROTOTYPE:
1509 PPCODE: 3209 PPCODE:
1510{ 3210{
1511 struct coro *coro; 3211 struct coro *coro;
1512 for (coro = coro_first; coro; coro = coro->next) 3212 for (coro = coro_first; coro; coro = coro->next)
1513 if (coro->hv) 3213 if (coro->hv)
… …
1518call (Coro::State coro, SV *coderef) 3218call (Coro::State coro, SV *coderef)
1519 ALIAS: 3219 ALIAS:
1520 eval = 1 3220 eval = 1
1521 CODE: 3221 CODE:
1522{ 3222{
1523 if (coro->mainstack) 3223 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1524 { 3224 {
1525 struct coro temp; 3225 struct coro *current = SvSTATE_current;
1526 Zero (&temp, 1, struct coro);
1527 temp.save = CORO_SAVE_ALL;
1528 3226
1529 if (!(coro->flags & CF_RUNNING)) 3227 if (current != coro)
1530 { 3228 {
3229 PUTBACK;
1531 save_perl (aTHX_ &temp); 3230 save_perl (aTHX_ current);
1532 load_perl (aTHX_ coro); 3231 load_perl (aTHX_ coro);
3232 SPAGAIN;
1533 } 3233 }
1534 3234
1535 { 3235 PUSHSTACK;
1536 dSP; 3236
1537 ENTER;
1538 SAVETMPS;
1539 PUSHMARK (SP); 3237 PUSHMARK (SP);
1540 PUTBACK; 3238 PUTBACK;
3239
1541 if (ix) 3240 if (ix)
1542 eval_sv (coderef, 0); 3241 eval_sv (coderef, 0);
1543 else 3242 else
1544 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3243 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3244
3245 POPSTACK;
1545 SPAGAIN; 3246 SPAGAIN;
1546 FREETMPS;
1547 LEAVE;
1548 PUTBACK;
1549 }
1550 3247
1551 if (!(coro->flags & CF_RUNNING)) 3248 if (current != coro)
1552 { 3249 {
3250 PUTBACK;
1553 save_perl (aTHX_ coro); 3251 save_perl (aTHX_ coro);
1554 load_perl (aTHX_ &temp); 3252 load_perl (aTHX_ current);
3253 SPAGAIN;
1555 } 3254 }
1556 } 3255 }
1557} 3256}
1558 3257
1559SV * 3258SV *
1560is_ready (Coro::State coro) 3259is_ready (Coro::State coro)
1561 PROTOTYPE: $ 3260 PROTOTYPE: $
1562 ALIAS: 3261 ALIAS:
1563 is_ready = CF_READY 3262 is_ready = CF_READY
1564 is_running = CF_RUNNING 3263 is_running = CF_RUNNING
1565 is_new = CF_NEW 3264 is_new = CF_NEW
1566 is_destroyed = CF_DESTROYED 3265 is_destroyed = CF_DESTROYED
3266 is_suspended = CF_SUSPENDED
1567 CODE: 3267 CODE:
1568 RETVAL = boolSV (coro->flags & ix); 3268 RETVAL = boolSV (coro->flags & ix);
1569 OUTPUT: 3269 OUTPUT:
1570 RETVAL 3270 RETVAL
1571 3271
1572void 3272void
3273throw (Coro::State self, SV *throw = &PL_sv_undef)
3274 PROTOTYPE: $;$
3275 CODE:
3276{
3277 struct coro *current = SvSTATE_current;
3278 SV **throwp = self == current ? &CORO_THROW : &self->except;
3279 SvREFCNT_dec (*throwp);
3280 SvGETMAGIC (throw);
3281 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3282}
3283
3284void
1573trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB) 3285api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1574 CODE: 3286 PROTOTYPE: $;$
1575 if (flags & CC_TRACE) 3287 C_ARGS: aTHX_ coro, flags
1576 {
1577 if (!coro->cctx)
1578 coro->cctx = cctx_new ();
1579 else if (!(coro->cctx->flags & CC_TRACE))
1580 croak ("cannot enable tracing on coroutine with custom stack");
1581
1582 coro->cctx->flags |= flags & (CC_TRACE | CC_TRACE_ALL);
1583 }
1584 else
1585 if (coro->cctx && coro->cctx->flags & CC_TRACE)
1586 {
1587 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1588 coro->cctx->flags |= CC_NOREUSE;
1589
1590 if (coro->flags & CF_RUNNING)
1591 PL_runops = RUNOPS_DEFAULT;
1592 else
1593 coro->runops = RUNOPS_DEFAULT;
1594 }
1595 3288
1596SV * 3289SV *
1597has_stack (Coro::State coro) 3290has_cctx (Coro::State coro)
1598 PROTOTYPE: $ 3291 PROTOTYPE: $
1599 CODE: 3292 CODE:
1600 RETVAL = boolSV (!!coro->cctx); 3293 /* maybe manage the running flag differently */
3294 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1601 OUTPUT: 3295 OUTPUT:
1602 RETVAL 3296 RETVAL
1603 3297
1604int 3298int
1605is_traced (Coro::State coro) 3299is_traced (Coro::State coro)
… …
1607 CODE: 3301 CODE:
1608 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3302 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1609 OUTPUT: 3303 OUTPUT:
1610 RETVAL 3304 RETVAL
1611 3305
1612IV 3306UV
1613rss (Coro::State coro) 3307rss (Coro::State coro)
1614 PROTOTYPE: $ 3308 PROTOTYPE: $
3309 ALIAS:
3310 usecount = 1
1615 CODE: 3311 CODE:
3312 switch (ix)
3313 {
1616 RETVAL = coro_rss (aTHX_ coro); 3314 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3315 case 1: RETVAL = coro->usecount; break;
3316 }
1617 OUTPUT: 3317 OUTPUT:
1618 RETVAL 3318 RETVAL
1619 3319
3320void
3321force_cctx ()
3322 PROTOTYPE:
3323 CODE:
3324 cctx_current->idle_sp = 0;
3325
3326void
3327swap_defsv (Coro::State self)
3328 PROTOTYPE: $
3329 ALIAS:
3330 swap_defav = 1
3331 CODE:
3332 if (!self->slot)
3333 croak ("cannot swap state with coroutine that has no saved state,");
3334 else
3335 {
3336 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3337 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3338
3339 SV *tmp = *src; *src = *dst; *dst = tmp;
3340 }
3341
3342void
3343cancel (Coro::State self)
3344 CODE:
3345 coro_state_destroy (aTHX_ self);
3346 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3347
3348
3349SV *
3350enable_times (int enabled = enable_times)
3351 CODE:
3352{
3353 RETVAL = boolSV (enable_times);
3354
3355 if (enabled != enable_times)
3356 {
3357 enable_times = enabled;
3358
3359 coro_times_update ();
3360 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3361 }
3362}
3363 OUTPUT:
3364 RETVAL
3365
3366void
3367times (Coro::State self)
3368 PPCODE:
3369{
3370 struct coro *current = SvSTATE (coro_current);
3371
3372 if (expect_false (current == self))
3373 {
3374 coro_times_update ();
3375 coro_times_add (SvSTATE (coro_current));
3376 }
3377
3378 EXTEND (SP, 2);
3379 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3380 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3381
3382 if (expect_false (current == self))
3383 coro_times_sub (SvSTATE (coro_current));
3384}
1620 3385
1621MODULE = Coro::State PACKAGE = Coro 3386MODULE = Coro::State PACKAGE = Coro
1622 3387
1623BOOT: 3388BOOT:
1624{ 3389{
1625 int i;
1626
1627 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3390 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1628 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3391 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3392 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3393 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3394 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1629 av_async_pool = get_av ("Coro::async_pool", TRUE); 3395 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3396 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3397 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3398 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1630 3399
1631 coro_current = get_sv ("Coro::current", FALSE); 3400 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1632 SvREADONLY_on (coro_current); 3401 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3402 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3403 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1633 3404
1634 coro_stash = gv_stashpv ("Coro", TRUE); 3405 coro_stash = gv_stashpv ("Coro", TRUE);
1635 3406
1636 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3407 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1637 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3408 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1638 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3409 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1639 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3410 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1640 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3411 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1641 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3412 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1642
1643 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1644 coro_ready[i] = newAV ();
1645 3413
1646 { 3414 {
1647 SV *sv = perl_get_sv("Coro::API", 1); 3415 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1648 3416
1649 coroapi.schedule = api_schedule; 3417 coroapi.schedule = api_schedule;
1650 coroapi.save = api_save; 3418 coroapi.schedule_to = api_schedule_to;
1651 coroapi.cede = api_cede; 3419 coroapi.cede = api_cede;
1652 coroapi.cede_notself = api_cede_notself; 3420 coroapi.cede_notself = api_cede_notself;
1653 coroapi.ready = api_ready; 3421 coroapi.ready = api_ready;
1654 coroapi.is_ready = api_is_ready; 3422 coroapi.is_ready = api_is_ready;
1655 coroapi.nready = &coro_nready; 3423 coroapi.nready = coro_nready;
1656 coroapi.current = coro_current; 3424 coroapi.current = coro_current;
1657 3425
1658 GCoroAPI = &coroapi; 3426 /*GCoroAPI = &coroapi;*/
1659 sv_setiv (sv, (IV)&coroapi); 3427 sv_setiv (sv, (IV)&coroapi);
1660 SvREADONLY_on (sv); 3428 SvREADONLY_on (sv);
1661 } 3429 }
1662} 3430}
3431
3432void
3433terminate (...)
3434 CODE:
3435 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3436
3437void
3438schedule (...)
3439 CODE:
3440 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3441
3442void
3443schedule_to (...)
3444 CODE:
3445 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3446
3447void
3448cede_to (...)
3449 CODE:
3450 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3451
3452void
3453cede (...)
3454 CODE:
3455 CORO_EXECUTE_SLF_XS (slf_init_cede);
3456
3457void
3458cede_notself (...)
3459 CODE:
3460 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1663 3461
1664void 3462void
1665_set_current (SV *current) 3463_set_current (SV *current)
1666 PROTOTYPE: $ 3464 PROTOTYPE: $
1667 CODE: 3465 CODE:
1668 SvREFCNT_dec (SvRV (coro_current)); 3466 SvREFCNT_dec (SvRV (coro_current));
1669 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3467 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3468
3469void
3470_set_readyhook (SV *hook)
3471 PROTOTYPE: $
3472 CODE:
3473 SvREFCNT_dec (coro_readyhook);
3474 SvGETMAGIC (hook);
3475 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1670 3476
1671int 3477int
1672prio (Coro::State coro, int newprio = 0) 3478prio (Coro::State coro, int newprio = 0)
3479 PROTOTYPE: $;$
1673 ALIAS: 3480 ALIAS:
1674 nice = 1 3481 nice = 1
1675 CODE: 3482 CODE:
1676{ 3483{
1677 RETVAL = coro->prio; 3484 RETVAL = coro->prio;
… …
1679 if (items > 1) 3486 if (items > 1)
1680 { 3487 {
1681 if (ix) 3488 if (ix)
1682 newprio = coro->prio - newprio; 3489 newprio = coro->prio - newprio;
1683 3490
1684 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3491 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1685 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3492 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1686 3493
1687 coro->prio = newprio; 3494 coro->prio = newprio;
1688 } 3495 }
1689} 3496}
1690 OUTPUT: 3497 OUTPUT:
… …
1692 3499
1693SV * 3500SV *
1694ready (SV *self) 3501ready (SV *self)
1695 PROTOTYPE: $ 3502 PROTOTYPE: $
1696 CODE: 3503 CODE:
1697 RETVAL = boolSV (api_ready (self)); 3504 RETVAL = boolSV (api_ready (aTHX_ self));
1698 OUTPUT: 3505 OUTPUT:
1699 RETVAL 3506 RETVAL
1700 3507
1701int 3508int
1702nready (...) 3509nready (...)
… …
1704 CODE: 3511 CODE:
1705 RETVAL = coro_nready; 3512 RETVAL = coro_nready;
1706 OUTPUT: 3513 OUTPUT:
1707 RETVAL 3514 RETVAL
1708 3515
1709# for async_pool speedup
1710void 3516void
1711_pool_1 (SV *cb) 3517suspend (Coro::State self)
3518 PROTOTYPE: $
1712 CODE: 3519 CODE:
1713{ 3520 self->flags |= CF_SUSPENDED;
1714 int i, len;
1715 HV *hv = (HV *)SvRV (coro_current);
1716 AV *defav = GvAV (PL_defgv);
1717 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1718 AV *invoke_av;
1719 3521
1720 if (!invoke) 3522void
1721 croak ("\3terminate\2\n"); 3523resume (Coro::State self)
3524 PROTOTYPE: $
3525 CODE:
3526 self->flags &= ~CF_SUSPENDED;
1722 3527
1723 hv_store (hv, "desc", sizeof ("desc") - 1, 3528void
1724 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 3529_pool_handler (...)
3530 CODE:
3531 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1725 3532
1726 invoke_av = (AV *)SvRV (invoke); 3533void
1727 len = av_len (invoke_av); 3534async_pool (SV *cv, ...)
3535 PROTOTYPE: &@
3536 PPCODE:
3537{
3538 HV *hv = (HV *)av_pop (av_async_pool);
3539 AV *av = newAV ();
3540 SV *cb = ST (0);
3541 int i;
1728 3542
1729 sv_setsv (cb, AvARRAY (invoke_av)[0]); 3543 av_extend (av, items - 2);
3544 for (i = 1; i < items; ++i)
3545 av_push (av, SvREFCNT_inc_NN (ST (i)));
1730 3546
1731 if (len > 0) 3547 if ((SV *)hv == &PL_sv_undef)
1732 { 3548 {
1733 av_fill (defav, len - 1); 3549 PUSHMARK (SP);
1734 for (i = 0; i < len; ++i) 3550 EXTEND (SP, 2);
1735 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3551 PUSHs (sv_Coro);
3552 PUSHs ((SV *)cv_pool_handler);
3553 PUTBACK;
3554 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3555 SPAGAIN;
3556
3557 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1736 } 3558 }
1737 3559
3560 {
3561 struct coro *coro = SvSTATE_hv (hv);
3562
3563 assert (!coro->invoke_cb);
3564 assert (!coro->invoke_av);
3565 coro->invoke_cb = SvREFCNT_inc (cb);
3566 coro->invoke_av = av;
3567 }
3568
3569 api_ready (aTHX_ (SV *)hv);
3570
3571 if (GIMME_V != G_VOID)
3572 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3573 else
1738 SvREFCNT_dec (invoke); 3574 SvREFCNT_dec (hv);
1739} 3575}
1740 3576
1741void 3577SV *
1742_pool_2 (SV *cb) 3578rouse_cb ()
3579 PROTOTYPE:
1743 CODE: 3580 CODE:
1744{ 3581 RETVAL = coro_new_rouse_cb (aTHX);
1745 struct coro *coro = SvSTATE (coro_current);
1746
1747 sv_setsv (cb, &PL_sv_undef);
1748
1749 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1750 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1751 croak ("\3terminate\2\n");
1752
1753 av_clear (GvAV (PL_defgv));
1754 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1755 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1756 coro->save = CORO_SAVE_DEF;
1757 coro->prio = 0;
1758 av_push (av_async_pool, newSVsv (coro_current));
1759}
1760
1761
1762MODULE = Coro::State PACKAGE = Coro::AIO
1763
1764SV *
1765_get_state ()
1766 CODE:
1767{
1768 struct io_state *data;
1769
1770 RETVAL = newSV (sizeof (struct io_state));
1771 data = (struct io_state *)SvPVX (RETVAL);
1772 SvCUR_set (RETVAL, sizeof (struct io_state));
1773 SvPOK_only (RETVAL);
1774
1775 data->errorno = errno;
1776 data->laststype = PL_laststype;
1777 data->laststatval = PL_laststatval;
1778 data->statcache = PL_statcache;
1779}
1780 OUTPUT: 3582 OUTPUT:
1781 RETVAL 3583 RETVAL
1782 3584
1783void 3585void
1784_set_state (char *data_) 3586rouse_wait (...)
3587 PROTOTYPE: ;$
3588 PPCODE:
3589 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3590
3591void
3592on_enter (SV *block)
3593 ALIAS:
3594 on_leave = 1
1785 PROTOTYPE: $ 3595 PROTOTYPE: &
1786 CODE: 3596 CODE:
1787{ 3597{
1788 struct io_state *data = (void *)data_; 3598 struct coro *coro = SvSTATE_current;
3599 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
1789 3600
1790 errno = data->errorno; 3601 block = (SV *)coro_sv_2cv (aTHX_ block);
1791 PL_laststype = data->laststype;
1792 PL_laststatval = data->laststatval;
1793 PL_statcache = data->statcache;
1794}
1795 3602
3603 if (!*avp)
3604 *avp = newAV ();
3605
3606 av_push (*avp, SvREFCNT_inc (block));
3607
3608 if (!ix)
3609 on_enterleave_call (aTHX_ block);
3610
3611 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3612 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3613 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3614}
3615
3616
3617MODULE = Coro::State PACKAGE = PerlIO::cede
3618
3619BOOT:
3620 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3621
3622
3623MODULE = Coro::State PACKAGE = Coro::Semaphore
3624
3625SV *
3626new (SV *klass, SV *count = 0)
3627 CODE:
3628{
3629 int semcnt = 1;
3630
3631 if (count)
3632 {
3633 SvGETMAGIC (count);
3634
3635 if (SvOK (count))
3636 semcnt = SvIV (count);
3637 }
3638
3639 RETVAL = sv_bless (
3640 coro_waitarray_new (aTHX_ semcnt),
3641 GvSTASH (CvGV (cv))
3642 );
3643}
3644 OUTPUT:
3645 RETVAL
3646
3647# helper for Coro::Channel and others
3648SV *
3649_alloc (int count)
3650 CODE:
3651 RETVAL = coro_waitarray_new (aTHX_ count);
3652 OUTPUT:
3653 RETVAL
3654
3655SV *
3656count (SV *self)
3657 CODE:
3658 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3659 OUTPUT:
3660 RETVAL
3661
3662void
3663up (SV *self, int adjust = 1)
3664 ALIAS:
3665 adjust = 1
3666 CODE:
3667 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3668
3669void
3670down (...)
3671 CODE:
3672 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3673
3674void
3675wait (...)
3676 CODE:
3677 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3678
3679void
3680try (SV *self)
3681 PPCODE:
3682{
3683 AV *av = (AV *)SvRV (self);
3684 SV *count_sv = AvARRAY (av)[0];
3685 IV count = SvIVX (count_sv);
3686
3687 if (count > 0)
3688 {
3689 --count;
3690 SvIVX (count_sv) = count;
3691 XSRETURN_YES;
3692 }
3693 else
3694 XSRETURN_NO;
3695}
3696
3697void
3698waiters (SV *self)
3699 PPCODE:
3700{
3701 AV *av = (AV *)SvRV (self);
3702 int wcount = AvFILLp (av) + 1 - 1;
3703
3704 if (GIMME_V == G_SCALAR)
3705 XPUSHs (sv_2mortal (newSViv (wcount)));
3706 else
3707 {
3708 int i;
3709 EXTEND (SP, wcount);
3710 for (i = 1; i <= wcount; ++i)
3711 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3712 }
3713}
3714
3715MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3716
3717void
3718_may_delete (SV *sem, int count, int extra_refs)
3719 PPCODE:
3720{
3721 AV *av = (AV *)SvRV (sem);
3722
3723 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3724 && AvFILLp (av) == 0 /* no waiters, just count */
3725 && SvIV (AvARRAY (av)[0]) == count)
3726 XSRETURN_YES;
3727
3728 XSRETURN_NO;
3729}
3730
3731MODULE = Coro::State PACKAGE = Coro::Signal
3732
3733SV *
3734new (SV *klass)
3735 CODE:
3736 RETVAL = sv_bless (
3737 coro_waitarray_new (aTHX_ 0),
3738 GvSTASH (CvGV (cv))
3739 );
3740 OUTPUT:
3741 RETVAL
3742
3743void
3744wait (...)
3745 CODE:
3746 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3747
3748void
3749broadcast (SV *self)
3750 CODE:
3751{
3752 AV *av = (AV *)SvRV (self);
3753 coro_signal_wake (aTHX_ av, AvFILLp (av));
3754}
3755
3756void
3757send (SV *self)
3758 CODE:
3759{
3760 AV *av = (AV *)SvRV (self);
3761
3762 if (AvFILLp (av))
3763 coro_signal_wake (aTHX_ av, 1);
3764 else
3765 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3766}
3767
3768IV
3769awaited (SV *self)
3770 CODE:
3771 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3772 OUTPUT:
3773 RETVAL
3774
3775
3776MODULE = Coro::State PACKAGE = Coro::AnyEvent
3777
3778BOOT:
3779 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3780
3781void
3782_schedule (...)
3783 CODE:
3784{
3785 static int incede;
3786
3787 api_cede_notself (aTHX);
3788
3789 ++incede;
3790 while (coro_nready >= incede && api_cede (aTHX))
3791 ;
3792
3793 sv_setsv (sv_activity, &PL_sv_undef);
3794 if (coro_nready >= incede)
3795 {
3796 PUSHMARK (SP);
3797 PUTBACK;
3798 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3799 }
3800
3801 --incede;
3802}
3803
3804
3805MODULE = Coro::State PACKAGE = Coro::AIO
3806
3807void
3808_register (char *target, char *proto, SV *req)
3809 CODE:
3810{
3811 CV *req_cv = coro_sv_2cv (aTHX_ req);
3812 /* newXSproto doesn't return the CV on 5.8 */
3813 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3814 sv_setpv ((SV *)slf_cv, proto);
3815 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3816}
3817

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