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Comparing Coro/Coro/State.xs (file contents):
Revision 1.145 by root, Mon Mar 12 21:40:14 2007 UTC vs.
Revision 1.318 by root, Thu Nov 20 07:02:43 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8 12
9#include <stdio.h> 13#include <stdio.h>
10#include <errno.h> 14#include <errno.h>
11#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
12 25
13#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
14# include <unistd.h> 27# include <unistd.h>
15# include <sys/mman.h> 28# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
33# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
34#endif 47#endif
35 48
36#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
38# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
39#else
40# define REGISTER_STACK(cctx,start,end)
41#endif 51#endif
42 52
43/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
44#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
45 55
46#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
47 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
48 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
49 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
50 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
51 61
52#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
53# ifndef PL_ppaddr 63# ifndef PL_ppaddr
54# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
55# endif 65# endif
… …
68# ifndef IS_PADCONST 78# ifndef IS_PADCONST
69# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
70# endif 80# endif
71#endif 81#endif
72 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
73/* 5.8.7 */ 107/* 5.8.7 */
74#ifndef SvRV_set 108#ifndef SvRV_set
75# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
76#endif 110#endif
77 111
… …
86/* prefer perl internal functions over our own? */ 120/* prefer perl internal functions over our own? */
87#ifndef CORO_PREFER_PERL_FUNCTIONS 121#ifndef CORO_PREFER_PERL_FUNCTIONS
88# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
89#endif 123#endif
90 124
91/* The next macro should declare a variable stacklevel that contains and approximation 125/* The next macros try to return the current stack pointer, in an as
92 * to the current C stack pointer. Its property is that it changes with each call 126 * portable way as possible. */
93 * and should be unique. */ 127#if __GNUC__ >= 4
94#define dSTACKLEVEL int stacklevel 128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
131# define dSTACKLEVEL volatile void *stacklevel
95#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
96 134
97#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
98 136
99#if __GNUC__ >= 3 137#if __GNUC__ >= 3
100# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
101# define BARRIER __asm__ __volatile__ ("" : : : "memory") 139# define expect(expr,value) __builtin_expect ((expr),(value))
140# define INLINE static inline
102#else 141#else
103# define attribute(x) 142# define attribute(x)
104# define BARRIER 143# define expect(expr,value) (expr)
144# define INLINE static
105#endif 145#endif
106 146
147#define expect_false(expr) expect ((expr) != 0, 0)
148#define expect_true(expr) expect ((expr) != 0, 1)
149
107#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
108 151
109#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
110 154
111#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
112static perl_mutex coro_mutex; 156# if CORO_PTHREAD
113# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 157static void *coro_thx;
114# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 158# endif
115#else
116# define LOCK (void)0
117# define UNLOCK (void)0
118#endif 159#endif
119 160
120/* helper storage struct for Coro::AIO */ 161static double (*nvtime)(); /* so why doesn't it take void? */
121struct io_state
122{
123 int errorno;
124 I32 laststype;
125 int laststatval;
126 Stat_t statcache;
127};
128 162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
166
167static U32 cctx_gen;
129static size_t coro_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
130static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
131static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
171static JMPENV *main_top_env;
132static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
133static SV *coro_mortal; /* will be freed after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
177
178static GV *irsgv; /* $/ */
179static GV *stdoutgv; /* *STDOUT */
180static SV *rv_diehook;
181static SV *rv_warnhook;
182static HV *hv_sig; /* %SIG */
183
184/* async_pool helper stuff */
185static SV *sv_pool_rss;
186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
188static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler;
191static CV *cv_coro_state_new;
192
193/* Coro::AnyEvent */
194static SV *sv_activity;
134 195
135static struct coro_cctx *cctx_first; 196static struct coro_cctx *cctx_first;
136static int cctx_count, cctx_idle; 197static int cctx_count, cctx_idle;
137 198
199enum {
200 CC_MAPPED = 0x01,
201 CC_NOREUSE = 0x02, /* throw this away after tracing */
202 CC_TRACE = 0x04,
203 CC_TRACE_SUB = 0x08, /* trace sub calls */
204 CC_TRACE_LINE = 0x10, /* trace each statement */
205 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
206};
207
138/* this is a structure representing a c-level coroutine */ 208/* this is a structure representing a c-level coroutine */
139typedef struct coro_cctx { 209typedef struct coro_cctx
210{
140 struct coro_cctx *next; 211 struct coro_cctx *next;
141 212
142 /* the stack */ 213 /* the stack */
143 void *sptr; 214 void *sptr;
144 size_t ssize; 215 size_t ssize;
… …
147 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 218 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
148 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 219 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
149 JMPENV *top_env; 220 JMPENV *top_env;
150 coro_context cctx; 221 coro_context cctx;
151 222
223 U32 gen;
152#if CORO_USE_VALGRIND 224#if CORO_USE_VALGRIND
153 int valgrind_id; 225 int valgrind_id;
154#endif 226#endif
155 char inuse, mapped; 227 unsigned char flags;
156} coro_cctx; 228} coro_cctx;
157 229
158enum { 230enum {
159 CF_RUNNING = 0x0001, /* coroutine is running */ 231 CF_RUNNING = 0x0001, /* coroutine is running */
160 CF_READY = 0x0002, /* coroutine is ready */ 232 CF_READY = 0x0002, /* coroutine is ready */
161 CF_NEW = 0x0004, /* has never been switched to */ 233 CF_NEW = 0x0004, /* has never been switched to */
162 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 234 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
163}; 235};
164 236
165/* this is a structure representing a perl-level coroutine */ 237/* the structure where most of the perl state is stored, overlaid on the cxstack */
166struct coro { 238typedef struct
167 /* the c coroutine allocated to this perl coroutine, if any */ 239{
168 coro_cctx *cctx; 240 SV *defsv;
169 241 AV *defav;
170 /* data associated with this coroutine (initial args) */ 242 SV *errsv;
171 AV *args; 243 SV *irsgv;
172 int refcnt;
173 int save; /* CORO_SAVE flags */
174 int flags; /* CF_ flags */
175
176 /* optionally saved, might be zero */
177 AV *defav; /* @_ */
178 SV *defsv; /* $_ */
179 SV *errsv; /* $@ */
180 SV *irssv; /* $/ */
181 SV *irssv_sv; /* real $/ cache */
182
183#define VAR(name,type) type name; 244#define VAR(name,type) type name;
184# include "state.h" 245# include "state.h"
185#undef VAR 246#undef VAR
247} perl_slots;
248
249#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
250
251/* this is a structure representing a perl-level coroutine */
252struct coro {
253 /* the C coroutine allocated to this perl coroutine, if any */
254 coro_cctx *cctx;
255
256 /* state data */
257 struct CoroSLF slf_frame; /* saved slf frame */
258 AV *mainstack;
259 perl_slots *slot; /* basically the saved sp */
260
261 CV *startcv; /* the CV to execute */
262 AV *args; /* data associated with this coroutine (initial args) */
263 int refcnt; /* coroutines are refcounted, yes */
264 int flags; /* CF_ flags */
265 HV *hv; /* the perl hash associated with this coro, if any */
266 void (*on_destroy)(pTHX_ struct coro *coro);
267
268 /* statistics */
269 int usecount; /* number of transfers to this coro */
186 270
187 /* coro process data */ 271 /* coro process data */
188 int prio; 272 int prio;
273 SV *except; /* exception to be thrown */
274 SV *rouse_cb;
275
276 /* async_pool */
277 SV *saved_deffh;
278 SV *invoke_cb;
279 AV *invoke_av;
280
281 /* linked list */
282 struct coro *next, *prev;
189}; 283};
190 284
191typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
192typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
287
288/* the following variables are effectively part of the perl context */
289/* and get copied between struct coro and these variables */
290/* the mainr easonw e don't support windows process emulation */
291static struct CoroSLF slf_frame; /* the current slf frame */
193 292
194/** Coro ********************************************************************/ 293/** Coro ********************************************************************/
195 294
196#define PRIO_MAX 3 295#define PRIO_MAX 3
197#define PRIO_HIGH 1 296#define PRIO_HIGH 1
… …
200#define PRIO_IDLE -3 299#define PRIO_IDLE -3
201#define PRIO_MIN -4 300#define PRIO_MIN -4
202 301
203/* for Coro.pm */ 302/* for Coro.pm */
204static SV *coro_current; 303static SV *coro_current;
304static SV *coro_readyhook;
205static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 305static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
206static int coro_nready; 306static CV *cv_coro_run, *cv_coro_terminate;
307static struct coro *coro_first;
308#define coro_nready coroapi.nready
207 309
208/** lowlevel stuff **********************************************************/ 310/** lowlevel stuff **********************************************************/
209 311
312static SV *
313coro_get_sv (pTHX_ const char *name, int create)
314{
315#if PERL_VERSION_ATLEAST (5,10,0)
316 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
317 get_sv (name, create);
318#endif
319 return get_sv (name, create);
320}
321
210static AV * 322static AV *
323coro_get_av (pTHX_ const char *name, int create)
324{
325#if PERL_VERSION_ATLEAST (5,10,0)
326 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
327 get_av (name, create);
328#endif
329 return get_av (name, create);
330}
331
332static HV *
333coro_get_hv (pTHX_ const char *name, int create)
334{
335#if PERL_VERSION_ATLEAST (5,10,0)
336 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
337 get_hv (name, create);
338#endif
339 return get_hv (name, create);
340}
341
342/* may croak */
343INLINE CV *
344coro_sv_2cv (pTHX_ SV *sv)
345{
346 HV *st;
347 GV *gvp;
348 return sv_2cv (sv, &st, &gvp, 0);
349}
350
351static AV *
211coro_clone_padlist (CV *cv) 352coro_clone_padlist (pTHX_ CV *cv)
212{ 353{
213 AV *padlist = CvPADLIST (cv); 354 AV *padlist = CvPADLIST (cv);
214 AV *newpadlist, *newpad; 355 AV *newpadlist, *newpad;
215 356
216 newpadlist = newAV (); 357 newpadlist = newAV ();
217 AvREAL_off (newpadlist); 358 AvREAL_off (newpadlist);
218#if PERL_VERSION_ATLEAST (5,9,0) 359#if PERL_VERSION_ATLEAST (5,10,0)
219 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 360 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
220#else 361#else
221 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 362 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
222#endif 363#endif
223 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 364 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
224 --AvFILLp (padlist); 365 --AvFILLp (padlist);
225 366
226 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 367 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
227 av_store (newpadlist, 1, (SV *)newpad); 368 av_store (newpadlist, 1, (SV *)newpad);
228 369
229 return newpadlist; 370 return newpadlist;
230} 371}
231 372
232static void 373static void
233free_padlist (AV *padlist) 374free_padlist (pTHX_ AV *padlist)
234{ 375{
235 /* may be during global destruction */ 376 /* may be during global destruction */
236 if (SvREFCNT (padlist)) 377 if (SvREFCNT (padlist))
237 { 378 {
238 I32 i = AvFILLp (padlist); 379 I32 i = AvFILLp (padlist);
… …
259 AV *padlist; 400 AV *padlist;
260 AV *av = (AV *)mg->mg_obj; 401 AV *av = (AV *)mg->mg_obj;
261 402
262 /* casting is fun. */ 403 /* casting is fun. */
263 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 404 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264 free_padlist (padlist); 405 free_padlist (aTHX_ padlist);
265 406
266 SvREFCNT_dec (av); 407 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
267 408
268 return 0; 409 return 0;
269} 410}
270 411
412#define CORO_MAGIC_type_cv 26
271#define PERL_MAGIC_coro PERL_MAGIC_ext 413#define CORO_MAGIC_type_state PERL_MAGIC_ext
272 414
273static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 415static MGVTBL coro_cv_vtbl = {
416 0, 0, 0, 0,
417 coro_cv_free
418};
274 419
275#define CORO_MAGIC(cv) \ 420#define CORO_MAGIC_NN(sv, type) \
421 (expect_true (SvMAGIC (sv)->mg_type == type) \
276 SvMAGIC (cv) \ 422 ? SvMAGIC (sv) \
277 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 423 : mg_find (sv, type))
278 ? SvMAGIC (cv) \ 424
279 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 425#define CORO_MAGIC(sv, type) \
426 (expect_true (SvMAGIC (sv)) \
427 ? CORO_MAGIC_NN (sv, type) \
280 : 0 428 : 0)
429
430#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
431#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
432
433INLINE struct coro *
434SvSTATE_ (pTHX_ SV *coro)
435{
436 HV *stash;
437 MAGIC *mg;
438
439 if (SvROK (coro))
440 coro = SvRV (coro);
441
442 if (expect_false (SvTYPE (coro) != SVt_PVHV))
443 croak ("Coro::State object required");
444
445 stash = SvSTASH (coro);
446 if (expect_false (stash != coro_stash && stash != coro_state_stash))
447 {
448 /* very slow, but rare, check */
449 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
450 croak ("Coro::State object required");
451 }
452
453 mg = CORO_MAGIC_state (coro);
454 return (struct coro *)mg->mg_ptr;
455}
456
457#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
458
459/* faster than SvSTATE, but expects a coroutine hv */
460#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
461#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
281 462
282/* the next two functions merely cache the padlists */ 463/* the next two functions merely cache the padlists */
283static void 464static void
284get_padlist (CV *cv) 465get_padlist (pTHX_ CV *cv)
285{ 466{
286 MAGIC *mg = CORO_MAGIC (cv); 467 MAGIC *mg = CORO_MAGIC_cv (cv);
287 AV *av; 468 AV *av;
288 469
289 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 470 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
290 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 471 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
291 else 472 else
292 { 473 {
293#if CORO_PREFER_PERL_FUNCTIONS 474#if CORO_PREFER_PERL_FUNCTIONS
294 /* this is probably cleaner, but also slower? */ 475 /* this is probably cleaner? but also slower! */
476 /* in practise, it seems to be less stable */
295 CV *cp = Perl_cv_clone (cv); 477 CV *cp = Perl_cv_clone (aTHX_ cv);
296 CvPADLIST (cv) = CvPADLIST (cp); 478 CvPADLIST (cv) = CvPADLIST (cp);
297 CvPADLIST (cp) = 0; 479 CvPADLIST (cp) = 0;
298 SvREFCNT_dec (cp); 480 SvREFCNT_dec (cp);
299#else 481#else
300 CvPADLIST (cv) = coro_clone_padlist (cv); 482 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301#endif 483#endif
302 } 484 }
303} 485}
304 486
305static void 487static void
306put_padlist (CV *cv) 488put_padlist (pTHX_ CV *cv)
307{ 489{
308 MAGIC *mg = CORO_MAGIC (cv); 490 MAGIC *mg = CORO_MAGIC_cv (cv);
309 AV *av; 491 AV *av;
310 492
311 if (!mg) 493 if (expect_false (!mg))
312 { 494 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
313 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
314 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
315 mg->mg_virtual = &vtbl_coro;
316 mg->mg_obj = (SV *)newAV ();
317 }
318 495
319 av = (AV *)mg->mg_obj; 496 av = (AV *)mg->mg_obj;
320 497
321 if (AvFILLp (av) >= AvMAX (av)) 498 if (expect_false (AvFILLp (av) >= AvMAX (av)))
322 av_extend (av, AvMAX (av) + 1); 499 av_extend (av, AvMAX (av) + 1);
323 500
324 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 501 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325} 502}
326 503
327/** load & save, init *******************************************************/ 504/** load & save, init *******************************************************/
328 505
329#define SB do {
330#define SE } while (0)
331
332#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333
334static void 506static void
335load_perl (Coro__State c) 507load_perl (pTHX_ Coro__State c)
336{ 508{
509 perl_slots *slot = c->slot;
510 c->slot = 0;
511
512 PL_mainstack = c->mainstack;
513
514 GvSV (PL_defgv) = slot->defsv;
515 GvAV (PL_defgv) = slot->defav;
516 GvSV (PL_errgv) = slot->errsv;
517 GvSV (irsgv) = slot->irsgv;
518
337#define VAR(name,type) PL_ ## name = c->name; 519 #define VAR(name,type) PL_ ## name = slot->name;
338# include "state.h" 520 # include "state.h"
339#undef VAR 521 #undef VAR
340
341 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
342 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
343 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
344 if (c->irssv)
345 {
346 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347 SvREFCNT_dec (c->irssv);
348 else
349 {
350 REPLACE_SV (PL_rs, c->irssv);
351 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352 sv_setsv (c->irssv_sv, PL_rs);
353 }
354 }
355 522
356 { 523 {
357 dSP; 524 dSP;
525
358 CV *cv; 526 CV *cv;
359 527
360 /* now do the ugly restore mess */ 528 /* now do the ugly restore mess */
361 while ((cv = (CV *)POPs)) 529 while (expect_true (cv = (CV *)POPs))
362 { 530 {
363 put_padlist (cv); /* mark this padlist as available */ 531 put_padlist (aTHX_ cv); /* mark this padlist as available */
364 CvDEPTH (cv) = PTR2IV (POPs); 532 CvDEPTH (cv) = PTR2IV (POPs);
365 CvPADLIST (cv) = (AV *)POPs; 533 CvPADLIST (cv) = (AV *)POPs;
366 } 534 }
367 535
368 PUTBACK; 536 PUTBACK;
369 } 537 }
370 assert (!PL_comppad || AvARRAY (PL_comppad));//D
371}
372 538
539 slf_frame = c->slf_frame;
540 CORO_THROW = c->except;
541}
542
373static void 543static void
374save_perl (Coro__State c) 544save_perl (pTHX_ Coro__State c)
375{ 545{
376 assert (!PL_comppad || AvARRAY (PL_comppad));//D 546 c->except = CORO_THROW;
547 c->slf_frame = slf_frame;
548
377 { 549 {
378 dSP; 550 dSP;
379 I32 cxix = cxstack_ix; 551 I32 cxix = cxstack_ix;
380 PERL_CONTEXT *ccstk = cxstack; 552 PERL_CONTEXT *ccstk = cxstack;
381 PERL_SI *top_si = PL_curstackinfo; 553 PERL_SI *top_si = PL_curstackinfo;
… …
383 /* 555 /*
384 * the worst thing you can imagine happens first - we have to save 556 * the worst thing you can imagine happens first - we have to save
385 * (and reinitialize) all cv's in the whole callchain :( 557 * (and reinitialize) all cv's in the whole callchain :(
386 */ 558 */
387 559
388 EXTEND (SP, 3 + 1);
389 PUSHs (Nullsv); 560 XPUSHs (Nullsv);
390 /* this loop was inspired by pp_caller */ 561 /* this loop was inspired by pp_caller */
391 for (;;) 562 for (;;)
392 { 563 {
393 while (cxix >= 0) 564 while (expect_true (cxix >= 0))
394 { 565 {
395 PERL_CONTEXT *cx = &ccstk[cxix--]; 566 PERL_CONTEXT *cx = &ccstk[cxix--];
396 567
397 if (CxTYPE (cx) == CXt_SUB) 568 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
398 { 569 {
399 CV *cv = cx->blk_sub.cv; 570 CV *cv = cx->blk_sub.cv;
400 571
401 if (CvDEPTH (cv)) 572 if (expect_true (CvDEPTH (cv)))
402 { 573 {
403 EXTEND (SP, 3); 574 EXTEND (SP, 3);
404 PUSHs ((SV *)CvPADLIST (cv)); 575 PUSHs ((SV *)CvPADLIST (cv));
405 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 576 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
406 PUSHs ((SV *)cv); 577 PUSHs ((SV *)cv);
407 578
408 CvDEPTH (cv) = 0; 579 CvDEPTH (cv) = 0;
409 get_padlist (cv); 580 get_padlist (aTHX_ cv);
410 } 581 }
411 } 582 }
412 } 583 }
413 584
414 if (top_si->si_type == PERLSI_MAIN) 585 if (expect_true (top_si->si_type == PERLSI_MAIN))
415 break; 586 break;
416 587
417 top_si = top_si->si_prev; 588 top_si = top_si->si_prev;
418 ccstk = top_si->si_cxstack; 589 ccstk = top_si->si_cxstack;
419 cxix = top_si->si_cxix; 590 cxix = top_si->si_cxix;
420 } 591 }
421 592
422 PUTBACK; 593 PUTBACK;
423 } 594 }
424 595
425 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 596 /* allocate some space on the context stack for our purposes */
426 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 597 /* we manually unroll here, as usually 2 slots is enough */
427 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 598 if (SLOT_COUNT >= 1) CXINC;
428 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 599 if (SLOT_COUNT >= 2) CXINC;
600 if (SLOT_COUNT >= 3) CXINC;
601 {
602 int i;
603 for (i = 3; i < SLOT_COUNT; ++i)
604 CXINC;
605 }
606 cxstack_ix -= SLOT_COUNT; /* undo allocation */
429 607
608 c->mainstack = PL_mainstack;
609
610 {
611 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
612
613 slot->defav = GvAV (PL_defgv);
614 slot->defsv = DEFSV;
615 slot->errsv = ERRSV;
616 slot->irsgv = GvSV (irsgv);
617
430#define VAR(name,type)c->name = PL_ ## name; 618 #define VAR(name,type) slot->name = PL_ ## name;
431# include "state.h" 619 # include "state.h"
432#undef VAR 620 #undef VAR
621 }
433} 622}
434 623
435/* 624/*
436 * allocate various perl stacks. This is an exact copy 625 * allocate various perl stacks. This is almost an exact copy
437 * of perl.c:init_stacks, except that it uses less memory 626 * of perl.c:init_stacks, except that it uses less memory
438 * on the (sometimes correct) assumption that coroutines do 627 * on the (sometimes correct) assumption that coroutines do
439 * not usually need a lot of stackspace. 628 * not usually need a lot of stackspace.
440 */ 629 */
441#if CORO_PREFER_PERL_FUNCTIONS 630#if CORO_PREFER_PERL_FUNCTIONS
442# define coro_init_stacks init_stacks 631# define coro_init_stacks(thx) init_stacks ()
443#else 632#else
444static void 633static void
445coro_init_stacks () 634coro_init_stacks (pTHX)
446{ 635{
447 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 636 PL_curstackinfo = new_stackinfo(32, 8);
448 PL_curstackinfo->si_type = PERLSI_MAIN; 637 PL_curstackinfo->si_type = PERLSI_MAIN;
449 PL_curstack = PL_curstackinfo->si_stack; 638 PL_curstack = PL_curstackinfo->si_stack;
450 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 639 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451 640
452 PL_stack_base = AvARRAY(PL_curstack); 641 PL_stack_base = AvARRAY(PL_curstack);
453 PL_stack_sp = PL_stack_base; 642 PL_stack_sp = PL_stack_base;
454 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 643 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455 644
456 New(50,PL_tmps_stack,128,SV*); 645 New(50,PL_tmps_stack,32,SV*);
457 PL_tmps_floor = -1; 646 PL_tmps_floor = -1;
458 PL_tmps_ix = -1; 647 PL_tmps_ix = -1;
459 PL_tmps_max = 128; 648 PL_tmps_max = 32;
460 649
461 New(54,PL_markstack,32,I32); 650 New(54,PL_markstack,16,I32);
462 PL_markstack_ptr = PL_markstack; 651 PL_markstack_ptr = PL_markstack;
463 PL_markstack_max = PL_markstack + 32; 652 PL_markstack_max = PL_markstack + 16;
464 653
465#ifdef SET_MARK_OFFSET 654#ifdef SET_MARK_OFFSET
466 SET_MARK_OFFSET; 655 SET_MARK_OFFSET;
467#endif 656#endif
468 657
469 New(54,PL_scopestack,32,I32); 658 New(54,PL_scopestack,8,I32);
470 PL_scopestack_ix = 0; 659 PL_scopestack_ix = 0;
471 PL_scopestack_max = 32; 660 PL_scopestack_max = 8;
472 661
473 New(54,PL_savestack,64,ANY); 662 New(54,PL_savestack,24,ANY);
474 PL_savestack_ix = 0; 663 PL_savestack_ix = 0;
475 PL_savestack_max = 64; 664 PL_savestack_max = 24;
476 665
477#if !PERL_VERSION_ATLEAST (5,9,0) 666#if !PERL_VERSION_ATLEAST (5,10,0)
478 New(54,PL_retstack,16,OP*); 667 New(54,PL_retstack,4,OP*);
479 PL_retstack_ix = 0; 668 PL_retstack_ix = 0;
480 PL_retstack_max = 16; 669 PL_retstack_max = 4;
481#endif 670#endif
482} 671}
483#endif 672#endif
484 673
485/* 674/*
486 * destroy the stacks, the callchain etc... 675 * destroy the stacks, the callchain etc...
487 */ 676 */
488static void 677static void
489coro_destroy_stacks () 678coro_destruct_stacks (pTHX)
490{ 679{
491 if (!IN_DESTRUCT)
492 {
493 /* restore all saved variables and stuff */
494 LEAVE_SCOPE (0);
495 assert (PL_tmps_floor == -1);
496
497 /* free all temporaries */
498 FREETMPS;
499 assert (PL_tmps_ix == -1);
500
501 /* unwind all extra stacks */
502 POPSTACK_TO (PL_mainstack);
503
504 /* unwind main stack */
505 dounwind (-1);
506 }
507
508 while (PL_curstackinfo->si_next) 680 while (PL_curstackinfo->si_next)
509 PL_curstackinfo = PL_curstackinfo->si_next; 681 PL_curstackinfo = PL_curstackinfo->si_next;
510 682
511 while (PL_curstackinfo) 683 while (PL_curstackinfo)
512 { 684 {
… …
522 694
523 Safefree (PL_tmps_stack); 695 Safefree (PL_tmps_stack);
524 Safefree (PL_markstack); 696 Safefree (PL_markstack);
525 Safefree (PL_scopestack); 697 Safefree (PL_scopestack);
526 Safefree (PL_savestack); 698 Safefree (PL_savestack);
527#if !PERL_VERSION_ATLEAST (5,9,0) 699#if !PERL_VERSION_ATLEAST (5,10,0)
528 Safefree (PL_retstack); 700 Safefree (PL_retstack);
529#endif 701#endif
530} 702}
531 703
704#define CORO_RSS \
705 rss += sizeof (SYM (curstackinfo)); \
706 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
708 rss += SYM (tmps_max) * sizeof (SV *); \
709 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
710 rss += SYM (scopestack_max) * sizeof (I32); \
711 rss += SYM (savestack_max) * sizeof (ANY);
712
713static size_t
714coro_rss (pTHX_ struct coro *coro)
715{
716 size_t rss = sizeof (*coro);
717
718 if (coro->mainstack)
719 {
720 if (coro->flags & CF_RUNNING)
721 {
722 #define SYM(sym) PL_ ## sym
723 CORO_RSS;
724 #undef SYM
725 }
726 else
727 {
728 #define SYM(sym) coro->slot->sym
729 CORO_RSS;
730 #undef SYM
731 }
732 }
733
734 return rss;
735}
736
532/** coroutine stack handling ************************************************/ 737/** coroutine stack handling ************************************************/
533 738
739static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
740static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
741static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
742
743/* apparently < 5.8.8 */
744#ifndef MgPV_nolen_const
745#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
746 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
747 (const char*)(mg)->mg_ptr)
748#endif
749
750/*
751 * This overrides the default magic get method of %SIG elements.
752 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
753 * and instead of tryign to save and restore the hash elements, we just provide
754 * readback here.
755 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
756 * not expecting this to actually change the hook. This is a potential problem
757 * when a schedule happens then, but we ignore this.
758 */
534static void 759static int
535setup_coro (struct coro *coro) 760coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
761{
762 const char *s = MgPV_nolen_const (mg);
763
764 if (*s == '_')
765 {
766 SV **svp = 0;
767
768 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
769 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
770
771 if (svp)
772 {
773 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
774 return 0;
775 }
776 }
777
778 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
779}
780
781static int
782coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
783{
784 const char *s = MgPV_nolen_const (mg);
785
786 if (*s == '_')
787 {
788 SV **svp = 0;
789
790 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
791 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
792
793 if (svp)
794 {
795 SV *old = *svp;
796 *svp = 0;
797 SvREFCNT_dec (old);
798 return 0;
799 }
800 }
801
802 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
803}
804
805static int
806coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
807{
808 const char *s = MgPV_nolen_const (mg);
809
810 if (*s == '_')
811 {
812 SV **svp = 0;
813
814 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
815 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
816
817 if (svp)
818 {
819 SV *old = *svp;
820 *svp = newSVsv (sv);
821 SvREFCNT_dec (old);
822 return 0;
823 }
824 }
825
826 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
827}
828
829static void
830prepare_nop (pTHX_ struct coro_transfer_args *ta)
831{
832 /* kind of mega-hacky, but works */
833 ta->next = ta->prev = (struct coro *)ta;
834}
835
836static int
837slf_check_nop (pTHX_ struct CoroSLF *frame)
838{
839 return 0;
840}
841
842static int
843slf_check_repeat (pTHX_ struct CoroSLF *frame)
844{
845 return 1;
846}
847
848static UNOP coro_setup_op;
849
850static void NOINLINE /* noinline to keep it out of the transfer fast path */
851coro_setup (pTHX_ struct coro *coro)
536{ 852{
537 /* 853 /*
538 * emulate part of the perl startup here. 854 * emulate part of the perl startup here.
539 */ 855 */
540
541 coro_init_stacks (); 856 coro_init_stacks (aTHX);
542 857
858 PL_runops = RUNOPS_DEFAULT;
543 PL_curcop = &PL_compiling; 859 PL_curcop = &PL_compiling;
544 PL_in_eval = EVAL_NULL; 860 PL_in_eval = EVAL_NULL;
545 PL_comppad = 0; 861 PL_comppad = 0;
546 PL_curpm = 0; 862 PL_curpm = 0;
863 PL_curpad = 0;
547 PL_localizing = 0; 864 PL_localizing = 0;
548 PL_dirty = 0; 865 PL_dirty = 0;
549 PL_restartop = 0; 866 PL_restartop = 0;
867#if PERL_VERSION_ATLEAST (5,10,0)
868 PL_parser = 0;
869#endif
870
871 /* recreate the die/warn hooks */
872 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
873 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
874
875 GvSV (PL_defgv) = newSV (0);
876 GvAV (PL_defgv) = coro->args; coro->args = 0;
877 GvSV (PL_errgv) = newSV (0);
878 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
879 PL_rs = newSVsv (GvSV (irsgv));
880 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
550 881
551 { 882 {
552 dSP; 883 dSP;
553 LOGOP myop; 884 UNOP myop;
554 885
555 SvREFCNT_dec (GvAV (PL_defgv));
556 GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558 Zero (&myop, 1, LOGOP); 886 Zero (&myop, 1, UNOP);
559 myop.op_next = Nullop; 887 myop.op_next = Nullop;
888 myop.op_type = OP_ENTERSUB;
560 myop.op_flags = OPf_WANT_VOID; 889 myop.op_flags = OPf_WANT_VOID;
561 890
562 PUSHMARK (SP); 891 PUSHMARK (SP);
563 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 892 PUSHs ((SV *)coro->startcv);
564 PUTBACK; 893 PUTBACK;
565 PL_op = (OP *)&myop; 894 PL_op = (OP *)&myop;
566 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 895 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567 SPAGAIN;
568 } 896 }
569 897
570 ENTER; /* necessary e.g. for dounwind */ 898 /* this newly created coroutine might be run on an existing cctx which most
571} 899 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
900 */
901 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
902 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
572 903
904 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
905 coro_setup_op.op_next = PL_op;
906 coro_setup_op.op_type = OP_CUSTOM;
907 coro_setup_op.op_ppaddr = pp_slf;
908 /* no flags etc. required, as an init function won't be called */
909
910 PL_op = (OP *)&coro_setup_op;
911
912 /* copy throw, in case it was set before coro_setup */
913 CORO_THROW = coro->except;
914}
915
573static void 916static void
917coro_destruct (pTHX_ struct coro *coro)
918{
919 if (!IN_DESTRUCT)
920 {
921 /* restore all saved variables and stuff */
922 LEAVE_SCOPE (0);
923 assert (PL_tmps_floor == -1);
924
925 /* free all temporaries */
926 FREETMPS;
927 assert (PL_tmps_ix == -1);
928
929 /* unwind all extra stacks */
930 POPSTACK_TO (PL_mainstack);
931
932 /* unwind main stack */
933 dounwind (-1);
934 }
935
936 SvREFCNT_dec (GvSV (PL_defgv));
937 SvREFCNT_dec (GvAV (PL_defgv));
938 SvREFCNT_dec (GvSV (PL_errgv));
939 SvREFCNT_dec (PL_defoutgv);
940 SvREFCNT_dec (PL_rs);
941 SvREFCNT_dec (GvSV (irsgv));
942
943 SvREFCNT_dec (PL_diehook);
944 SvREFCNT_dec (PL_warnhook);
945
946 SvREFCNT_dec (coro->saved_deffh);
947 SvREFCNT_dec (coro->rouse_cb);
948 SvREFCNT_dec (coro->invoke_cb);
949 SvREFCNT_dec (coro->invoke_av);
950
951 coro_destruct_stacks (aTHX);
952}
953
954INLINE void
574free_coro_mortal () 955free_coro_mortal (pTHX)
575{ 956{
576 if (coro_mortal) 957 if (expect_true (coro_mortal))
577 { 958 {
578 SvREFCNT_dec (coro_mortal); 959 SvREFCNT_dec (coro_mortal);
579 coro_mortal = 0; 960 coro_mortal = 0;
580 } 961 }
581} 962}
582 963
583/* inject a fake call to Coro::State::_cctx_init into the execution */ 964static int
965runops_trace (pTHX)
966{
967 COP *oldcop = 0;
968 int oldcxix = -2;
969 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
970 coro_cctx *cctx = coro->cctx;
971
972 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
973 {
974 PERL_ASYNC_CHECK ();
975
976 if (cctx->flags & CC_TRACE_ALL)
977 {
978 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
979 {
980 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
981 SV **bot, **top;
982 AV *av = newAV (); /* return values */
983 SV **cb;
984 dSP;
985
986 GV *gv = CvGV (cx->blk_sub.cv);
987 SV *fullname = sv_2mortal (newSV (0));
988 if (isGV (gv))
989 gv_efullname3 (fullname, gv, 0);
990
991 bot = PL_stack_base + cx->blk_oldsp + 1;
992 top = cx->blk_gimme == G_ARRAY ? SP + 1
993 : cx->blk_gimme == G_SCALAR ? bot + 1
994 : bot;
995
996 av_extend (av, top - bot);
997 while (bot < top)
998 av_push (av, SvREFCNT_inc_NN (*bot++));
999
1000 PL_runops = RUNOPS_DEFAULT;
1001 ENTER;
1002 SAVETMPS;
1003 EXTEND (SP, 3);
1004 PUSHMARK (SP);
1005 PUSHs (&PL_sv_no);
1006 PUSHs (fullname);
1007 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1008 PUTBACK;
1009 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1010 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1011 SPAGAIN;
1012 FREETMPS;
1013 LEAVE;
1014 PL_runops = runops_trace;
1015 }
1016
1017 if (oldcop != PL_curcop)
1018 {
1019 oldcop = PL_curcop;
1020
1021 if (PL_curcop != &PL_compiling)
1022 {
1023 SV **cb;
1024
1025 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
1026 {
1027 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1028
1029 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1030 {
1031 runops_proc_t old_runops = PL_runops;
1032 dSP;
1033 GV *gv = CvGV (cx->blk_sub.cv);
1034 SV *fullname = sv_2mortal (newSV (0));
1035
1036 if (isGV (gv))
1037 gv_efullname3 (fullname, gv, 0);
1038
1039 PL_runops = RUNOPS_DEFAULT;
1040 ENTER;
1041 SAVETMPS;
1042 EXTEND (SP, 3);
1043 PUSHMARK (SP);
1044 PUSHs (&PL_sv_yes);
1045 PUSHs (fullname);
1046 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1047 PUTBACK;
1048 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1049 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1050 SPAGAIN;
1051 FREETMPS;
1052 LEAVE;
1053 PL_runops = runops_trace;
1054 }
1055
1056 oldcxix = cxstack_ix;
1057 }
1058
1059 if (cctx->flags & CC_TRACE_LINE)
1060 {
1061 dSP;
1062
1063 PL_runops = RUNOPS_DEFAULT;
1064 ENTER;
1065 SAVETMPS;
1066 EXTEND (SP, 3);
1067 PL_runops = RUNOPS_DEFAULT;
1068 PUSHMARK (SP);
1069 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1070 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1071 PUTBACK;
1072 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1073 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1074 SPAGAIN;
1075 FREETMPS;
1076 LEAVE;
1077 PL_runops = runops_trace;
1078 }
1079 }
1080 }
1081 }
1082 }
1083
1084 TAINT_NOT;
1085 return 0;
1086}
1087
1088static struct coro_cctx *cctx_ssl_cctx;
1089static struct CoroSLF cctx_ssl_frame;
1090
1091static void
1092slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1093{
1094 ta->prev = (struct coro *)cctx_ssl_cctx;
1095 ta->next = 0;
1096}
1097
1098static int
1099slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1100{
1101 *frame = cctx_ssl_frame;
1102
1103 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1104}
1105
1106/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
584static void NOINLINE 1107static void NOINLINE
585prepare_cctx (coro_cctx *cctx) 1108cctx_prepare (pTHX_ coro_cctx *cctx)
586{ 1109{
587 dSP;
588 LOGOP myop;
589
590 Zero (&myop, 1, LOGOP);
591 myop.op_next = PL_op;
592 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593
594 PUSHMARK (SP);
595 EXTEND (SP, 2);
596 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
597 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
598 PUTBACK;
599 PL_op = (OP *)&myop;
600 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601 SPAGAIN;
602}
603
604static void
605coro_run (void *arg)
606{
607 /* coro_run is the alternative tail of transfer(), so unlock here. */
608 UNLOCK;
609
610 /*
611 * this is a _very_ stripped down perl interpreter ;)
612 */
613 PL_top_env = &PL_start_env; 1110 PL_top_env = &PL_start_env;
614 1111
1112 if (cctx->flags & CC_TRACE)
1113 PL_runops = runops_trace;
1114
1115 /* we already must be executing an SLF op, there is no other valid way
1116 * that can lead to creation of a new cctx */
1117 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1118 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1119
1120 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1121 cctx_ssl_cctx = cctx;
1122 cctx_ssl_frame = slf_frame;
1123
1124 slf_frame.prepare = slf_prepare_set_stacklevel;
1125 slf_frame.check = slf_check_set_stacklevel;
1126}
1127
1128/* the tail of transfer: execute stuff we can only do after a transfer */
1129INLINE void
1130transfer_tail (pTHX)
1131{
1132 free_coro_mortal (aTHX);
1133}
1134
1135/*
1136 * this is a _very_ stripped down perl interpreter ;)
1137 */
1138static void
1139cctx_run (void *arg)
1140{
1141#ifdef USE_ITHREADS
1142# if CORO_PTHREAD
1143 PERL_SET_CONTEXT (coro_thx);
1144# endif
1145#endif
1146 {
1147 dTHX;
1148
1149 /* normally we would need to skip the entersub here */
1150 /* not doing so will re-execute it, which is exactly what we want */
1151 /* PL_nop = PL_nop->op_next */
1152
615 /* inject call to cctx_init */ 1153 /* inject a fake subroutine call to cctx_init */
616 prepare_cctx ((coro_cctx *)arg); 1154 cctx_prepare (aTHX_ (coro_cctx *)arg);
617 1155
1156 /* cctx_run is the alternative tail of transfer() */
1157 transfer_tail (aTHX);
1158
618 /* somebody will hit me for both perl_run and PL_restartop */ 1159 /* somebody or something will hit me for both perl_run and PL_restartop */
619 PL_restartop = PL_op; 1160 PL_restartop = PL_op;
620 perl_run (PL_curinterp); 1161 perl_run (PL_curinterp);
1162 /*
1163 * Unfortunately, there is no way to get at the return values of the
1164 * coro body here, as perl_run destroys these
1165 */
621 1166
622 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1167 /*
623 abort (); 1168 * If perl-run returns we assume exit() was being called or the coro
1169 * fell off the end, which seems to be the only valid (non-bug)
1170 * reason for perl_run to return. We try to exit by jumping to the
1171 * bootstrap-time "top" top_env, as we cannot restore the "main"
1172 * coroutine as Coro has no such concept
1173 */
1174 PL_top_env = main_top_env;
1175 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1176 }
624} 1177}
625 1178
626static coro_cctx * 1179static coro_cctx *
627cctx_new () 1180cctx_new ()
628{ 1181{
629 coro_cctx *cctx; 1182 coro_cctx *cctx;
1183
1184 ++cctx_count;
1185 New (0, cctx, 1, coro_cctx);
1186
1187 cctx->gen = cctx_gen;
1188 cctx->flags = 0;
1189 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1190
1191 return cctx;
1192}
1193
1194/* create a new cctx only suitable as source */
1195static coro_cctx *
1196cctx_new_empty ()
1197{
1198 coro_cctx *cctx = cctx_new ();
1199
1200 cctx->sptr = 0;
1201 coro_create (&cctx->cctx, 0, 0, 0, 0);
1202
1203 return cctx;
1204}
1205
1206/* create a new cctx suitable as destination/running a perl interpreter */
1207static coro_cctx *
1208cctx_new_run ()
1209{
1210 coro_cctx *cctx = cctx_new ();
630 void *stack_start; 1211 void *stack_start;
631 size_t stack_size; 1212 size_t stack_size;
632 1213
633 ++cctx_count;
634
635 Newz (0, cctx, 1, coro_cctx);
636
637#if HAVE_MMAP 1214#if HAVE_MMAP
638
639 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1215 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
640 /* mmap supposedly does allocate-on-write for us */ 1216 /* mmap supposedly does allocate-on-write for us */
641 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1217 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
642 1218
643 if (cctx->sptr != (void *)-1) 1219 if (cctx->sptr != (void *)-1)
644 { 1220 {
645# if CORO_STACKGUARD 1221 #if CORO_STACKGUARD
646 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1222 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
647# endif 1223 #endif
648 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1224 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
649 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1225 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650 cctx->mapped = 1; 1226 cctx->flags |= CC_MAPPED;
651 } 1227 }
652 else 1228 else
653#endif 1229#endif
654 { 1230 {
655 cctx->ssize = coro_stacksize * (long)sizeof (long); 1231 cctx->ssize = cctx_stacksize * (long)sizeof (long);
656 New (0, cctx->sptr, coro_stacksize, long); 1232 New (0, cctx->sptr, cctx_stacksize, long);
657 1233
658 if (!cctx->sptr) 1234 if (!cctx->sptr)
659 { 1235 {
660 perror ("FATAL: unable to allocate stack for coroutine"); 1236 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
661 _exit (EXIT_FAILURE); 1237 _exit (EXIT_FAILURE);
662 } 1238 }
663 1239
664 stack_start = cctx->sptr; 1240 stack_start = cctx->sptr;
665 stack_size = cctx->ssize; 1241 stack_size = cctx->ssize;
666 } 1242 }
667 1243
668 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1244 #if CORO_USE_VALGRIND
1245 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1246 #endif
1247
669 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1248 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
670 1249
671 return cctx; 1250 return cctx;
672} 1251}
673 1252
674static void 1253static void
… …
676{ 1255{
677 if (!cctx) 1256 if (!cctx)
678 return; 1257 return;
679 1258
680 --cctx_count; 1259 --cctx_count;
1260 coro_destroy (&cctx->cctx);
681 1261
1262 /* coro_transfer creates new, empty cctx's */
1263 if (cctx->sptr)
1264 {
682#if CORO_USE_VALGRIND 1265 #if CORO_USE_VALGRIND
683 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1266 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1267 #endif
1268
1269#if HAVE_MMAP
1270 if (cctx->flags & CC_MAPPED)
1271 munmap (cctx->sptr, cctx->ssize);
1272 else
684#endif 1273#endif
685
686#if HAVE_MMAP
687 if (cctx->mapped)
688 munmap (cctx->sptr, cctx->ssize);
689 else
690#endif
691 Safefree (cctx->sptr); 1274 Safefree (cctx->sptr);
1275 }
692 1276
693 Safefree (cctx); 1277 Safefree (cctx);
694} 1278}
695 1279
1280/* wether this cctx should be destructed */
1281#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1282
696static coro_cctx * 1283static coro_cctx *
697cctx_get () 1284cctx_get (pTHX)
698{ 1285{
699 while (cctx_first) 1286 while (expect_true (cctx_first))
700 { 1287 {
701 coro_cctx *cctx = cctx_first; 1288 coro_cctx *cctx = cctx_first;
702 cctx_first = cctx->next; 1289 cctx_first = cctx->next;
703 --cctx_idle; 1290 --cctx_idle;
704 1291
705 if (cctx->ssize >= coro_stacksize) 1292 if (expect_true (!CCTX_EXPIRED (cctx)))
706 return cctx; 1293 return cctx;
707 1294
708 cctx_destroy (cctx); 1295 cctx_destroy (cctx);
709 } 1296 }
710 1297
711 PL_op = PL_op->op_next;
712 return cctx_new (); 1298 return cctx_new_run ();
713} 1299}
714 1300
715static void 1301static void
716cctx_put (coro_cctx *cctx) 1302cctx_put (coro_cctx *cctx)
717{ 1303{
1304 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1305
718 /* free another cctx if overlimit */ 1306 /* free another cctx if overlimit */
719 if (cctx_idle >= MAX_IDLE_CCTX) 1307 if (expect_false (cctx_idle >= cctx_max_idle))
720 { 1308 {
721 coro_cctx *first = cctx_first; 1309 coro_cctx *first = cctx_first;
722 cctx_first = first->next; 1310 cctx_first = first->next;
723 --cctx_idle; 1311 --cctx_idle;
724 1312
725 assert (!first->inuse);
726 cctx_destroy (first); 1313 cctx_destroy (first);
727 } 1314 }
728 1315
729 ++cctx_idle; 1316 ++cctx_idle;
730 cctx->next = cctx_first; 1317 cctx->next = cctx_first;
731 cctx_first = cctx; 1318 cctx_first = cctx;
732} 1319}
733 1320
734/** coroutine switching *****************************************************/ 1321/** coroutine switching *****************************************************/
735 1322
736/* never call directly, always through the coro_state_transfer global variable */ 1323static void
737static void NOINLINE
738transfer (struct coro *prev, struct coro *next) 1324transfer_check (pTHX_ struct coro *prev, struct coro *next)
1325{
1326 /* TODO: throwing up here is considered harmful */
1327
1328 if (expect_true (prev != next))
1329 {
1330 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1331 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1332
1333 if (expect_false (next->flags & CF_RUNNING))
1334 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1335
1336 if (expect_false (next->flags & CF_DESTROYED))
1337 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1338
1339#if !PERL_VERSION_ATLEAST (5,10,0)
1340 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1341 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1342#endif
1343 }
1344}
1345
1346/* always use the TRANSFER macro */
1347static void NOINLINE /* noinline so we have a fixed stackframe */
1348transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
739{ 1349{
740 dSTACKLEVEL; 1350 dSTACKLEVEL;
741 1351
742 /* sometimes transfer is only called to set idle_sp */ 1352 /* sometimes transfer is only called to set idle_sp */
743 if (!next) 1353 if (expect_false (!next))
744 { 1354 {
745 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1355 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
746 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1356 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
747 } 1357 }
748 else if (prev != next) 1358 else if (expect_true (prev != next))
749 { 1359 {
750 coro_cctx *prev__cctx; 1360 coro_cctx *prev__cctx;
751 1361
752 if (prev->flags & CF_NEW) 1362 if (expect_false (prev->flags & CF_NEW))
753 { 1363 {
754 /* create a new empty context */ 1364 /* create a new empty/source context */
755 Newz (0, prev->cctx, 1, coro_cctx); 1365 prev->cctx = cctx_new_empty ();
756 prev->cctx->inuse = 1;
757 prev->flags &= ~CF_NEW; 1366 prev->flags &= ~CF_NEW;
758 prev->flags |= CF_RUNNING; 1367 prev->flags |= CF_RUNNING;
759 } 1368 }
760 1369
761 /*TODO: must not croak here */
762 if (!prev->flags & CF_RUNNING)
763 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
764
765 if (next->flags & CF_RUNNING)
766 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
767
768 if (next->flags & CF_DESTROYED)
769 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
770
771 prev->flags &= ~CF_RUNNING; 1370 prev->flags &= ~CF_RUNNING;
772 next->flags |= CF_RUNNING; 1371 next->flags |= CF_RUNNING;
773 1372
774 LOCK; 1373 /* first get rid of the old state */
1374 save_perl (aTHX_ prev);
775 1375
776 if (next->flags & CF_NEW) 1376 if (expect_false (next->flags & CF_NEW))
777 { 1377 {
778 /* need to start coroutine */ 1378 /* need to start coroutine */
779 next->flags &= ~CF_NEW; 1379 next->flags &= ~CF_NEW;
780 /* first get rid of the old state */
781 save_perl (prev);
782 /* setup coroutine call */ 1380 /* setup coroutine call */
783 setup_coro (next); 1381 coro_setup (aTHX_ next);
784 /* need a new stack */
785 assert (!next->cctx);
786 } 1382 }
787 else 1383 else
1384 load_perl (aTHX_ next);
1385
1386 prev__cctx = prev->cctx;
1387
1388 /* possibly untie and reuse the cctx */
1389 if (expect_true (
1390 prev__cctx->idle_sp == STACKLEVEL
1391 && !(prev__cctx->flags & CC_TRACE)
1392 && !force_cctx
1393 ))
788 { 1394 {
789 /* coroutine already started */ 1395 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
790 save_perl (prev); 1396 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
791 load_perl (next); 1397
1398 prev->cctx = 0;
1399
1400 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1401 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1402 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1403 if (!next->cctx)
1404 next->cctx = cctx_get (aTHX);
1405
1406 cctx_put (prev__cctx);
792 } 1407 }
793 1408
794 prev__cctx = prev->cctx; 1409 ++next->usecount;
795 1410
796 /* possibly "free" the cctx */
797 if (prev__cctx->idle_sp == STACKLEVEL)
798 {
799 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
800 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
801
802 prev->cctx = 0;
803
804 cctx_put (prev__cctx);
805 prev__cctx->inuse = 0;
806 }
807
808 if (!next->cctx) 1411 if (expect_true (!next->cctx))
809 {
810 next->cctx = cctx_get (); 1412 next->cctx = cctx_get (aTHX);
811 assert (!next->cctx->inuse);
812 next->cctx->inuse = 1;
813 }
814 1413
815 if (prev__cctx != next->cctx) 1414 if (expect_false (prev__cctx != next->cctx))
816 { 1415 {
817 prev__cctx->top_env = PL_top_env; 1416 prev__cctx->top_env = PL_top_env;
818 PL_top_env = next->cctx->top_env; 1417 PL_top_env = next->cctx->top_env;
819 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1418 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
820 } 1419 }
821 1420
822 free_coro_mortal (); 1421 transfer_tail (aTHX);
823 UNLOCK;
824 } 1422 }
825} 1423}
826 1424
827struct transfer_args 1425#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
828{
829 struct coro *prev, *next;
830};
831
832#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1426#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
833 1427
834/** high level stuff ********************************************************/ 1428/** high level stuff ********************************************************/
835 1429
836static int 1430static int
837coro_state_destroy (struct coro *coro) 1431coro_state_destroy (pTHX_ struct coro *coro)
838{ 1432{
839 if (coro->flags & CF_DESTROYED) 1433 if (coro->flags & CF_DESTROYED)
840 return 0; 1434 return 0;
1435
1436 if (coro->on_destroy)
1437 coro->on_destroy (aTHX_ coro);
841 1438
842 coro->flags |= CF_DESTROYED; 1439 coro->flags |= CF_DESTROYED;
843 1440
844 if (coro->flags & CF_READY) 1441 if (coro->flags & CF_READY)
845 { 1442 {
846 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1443 /* reduce nready, as destroying a ready coro effectively unreadies it */
847 /* alternative: look through all ready queues and remove the coro */ 1444 /* alternative: look through all ready queues and remove the coro */
848 LOCK;
849 --coro_nready; 1445 --coro_nready;
850 UNLOCK;
851 } 1446 }
852 else 1447 else
853 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1448 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
854 1449
855 if (coro->mainstack && coro->mainstack != main_mainstack) 1450 if (coro->mainstack && coro->mainstack != main_mainstack)
856 { 1451 {
857 struct coro temp; 1452 struct coro temp;
858 1453
859 assert (!(coro->flags & CF_RUNNING)); 1454 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
860 1455
861 Zero (&temp, 1, struct coro);
862 temp.save = CORO_SAVE_ALL;
863
864 if (coro->flags & CF_RUNNING)
865 croak ("FATAL: tried to destroy currently running coroutine");
866
867 save_perl (&temp); 1456 save_perl (aTHX_ &temp);
868 load_perl (coro); 1457 load_perl (aTHX_ coro);
869 1458
870 coro_destroy_stacks (); 1459 coro_destruct (aTHX_ coro);
871 1460
872 load_perl (&temp); /* this will get rid of defsv etc.. */ 1461 load_perl (aTHX_ &temp);
873 1462
874 coro->mainstack = 0; 1463 coro->slot = 0;
875 } 1464 }
876 1465
877 cctx_destroy (coro->cctx); 1466 cctx_destroy (coro->cctx);
1467 SvREFCNT_dec (coro->startcv);
878 SvREFCNT_dec (coro->args); 1468 SvREFCNT_dec (coro->args);
1469 SvREFCNT_dec (CORO_THROW);
1470
1471 if (coro->next) coro->next->prev = coro->prev;
1472 if (coro->prev) coro->prev->next = coro->next;
1473 if (coro == coro_first) coro_first = coro->next;
879 1474
880 return 1; 1475 return 1;
881} 1476}
882 1477
883static int 1478static int
884coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1479coro_state_free (pTHX_ SV *sv, MAGIC *mg)
885{ 1480{
886 struct coro *coro = (struct coro *)mg->mg_ptr; 1481 struct coro *coro = (struct coro *)mg->mg_ptr;
887 mg->mg_ptr = 0; 1482 mg->mg_ptr = 0;
888 1483
1484 coro->hv = 0;
1485
889 if (--coro->refcnt < 0) 1486 if (--coro->refcnt < 0)
890 { 1487 {
891 coro_state_destroy (coro); 1488 coro_state_destroy (aTHX_ coro);
892 Safefree (coro); 1489 Safefree (coro);
893 } 1490 }
894 1491
895 return 0; 1492 return 0;
896} 1493}
… …
914#else 1511#else
915# define MGf_DUP 0 1512# define MGf_DUP 0
916#endif 1513#endif
917}; 1514};
918 1515
919static struct coro *
920SvSTATE (SV *coro)
921{
922 HV *stash;
923 MAGIC *mg;
924
925 if (SvROK (coro))
926 coro = SvRV (coro);
927
928 stash = SvSTASH (coro);
929 if (stash != coro_stash && stash != coro_state_stash)
930 {
931 /* very slow, but rare, check */
932 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
933 croak ("Coro::State object required");
934 }
935
936 mg = CORO_MAGIC (coro);
937 return (struct coro *)mg->mg_ptr;
938}
939
940static void 1516static void
941prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1517prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
942{ 1518{
943 ta->prev = SvSTATE (prev_sv); 1519 ta->prev = SvSTATE (prev_sv);
944 ta->next = SvSTATE (next_sv); 1520 ta->next = SvSTATE (next_sv);
1521 TRANSFER_CHECK (*ta);
945} 1522}
946 1523
947static void 1524static void
948api_transfer (SV *prev_sv, SV *next_sv) 1525api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
949{ 1526{
950 struct transfer_args ta; 1527 struct coro_transfer_args ta;
951 1528
952 prepare_transfer (&ta, prev_sv, next_sv); 1529 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
953 TRANSFER (ta); 1530 TRANSFER (ta, 1);
954} 1531}
955 1532
956static int 1533/*****************************************************************************/
957api_save (SV *coro_sv, int new_save) 1534/* gensub: simple closure generation utility */
958{
959 struct coro *coro = SvSTATE (coro_sv);
960 int old_save = coro->save;
961 1535
962 if (new_save >= 0) 1536#define GENSUB_ARG CvXSUBANY (cv).any_ptr
963 coro->save = new_save;
964 1537
965 return old_save; 1538/* create a closure from XS, returns a code reference */
1539/* the arg can be accessed via GENSUB_ARG from the callback */
1540/* the callback must use dXSARGS/XSRETURN */
1541static SV *
1542gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1543{
1544 CV *cv = (CV *)newSV (0);
1545
1546 sv_upgrade ((SV *)cv, SVt_PVCV);
1547
1548 CvANON_on (cv);
1549 CvISXSUB_on (cv);
1550 CvXSUB (cv) = xsub;
1551 GENSUB_ARG = arg;
1552
1553 return newRV_noinc ((SV *)cv);
966} 1554}
967 1555
968/** Coro ********************************************************************/ 1556/** Coro ********************************************************************/
969 1557
970static void 1558INLINE void
971coro_enq (SV *coro_sv) 1559coro_enq (pTHX_ struct coro *coro)
972{ 1560{
973 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1561 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
974} 1562}
975 1563
976static SV * 1564INLINE SV *
977coro_deq (int min_prio) 1565coro_deq (pTHX)
978{ 1566{
979 int prio = PRIO_MAX - PRIO_MIN; 1567 int prio;
980 1568
981 min_prio -= PRIO_MIN;
982 if (min_prio < 0)
983 min_prio = 0;
984
985 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1569 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
986 if (AvFILLp (coro_ready [prio]) >= 0) 1570 if (AvFILLp (coro_ready [prio]) >= 0)
987 return av_shift (coro_ready [prio]); 1571 return av_shift (coro_ready [prio]);
988 1572
989 return 0; 1573 return 0;
990} 1574}
991 1575
992static int 1576static int
993api_ready (SV *coro_sv) 1577api_ready (pTHX_ SV *coro_sv)
994{ 1578{
995 struct coro *coro; 1579 struct coro *coro;
1580 SV *sv_hook;
1581 void (*xs_hook)(void);
996 1582
997 if (SvROK (coro_sv)) 1583 if (SvROK (coro_sv))
998 coro_sv = SvRV (coro_sv); 1584 coro_sv = SvRV (coro_sv);
999 1585
1000 coro = SvSTATE (coro_sv); 1586 coro = SvSTATE (coro_sv);
… …
1002 if (coro->flags & CF_READY) 1588 if (coro->flags & CF_READY)
1003 return 0; 1589 return 0;
1004 1590
1005 coro->flags |= CF_READY; 1591 coro->flags |= CF_READY;
1006 1592
1007 LOCK; 1593 sv_hook = coro_nready ? 0 : coro_readyhook;
1008 coro_enq (SvREFCNT_inc (coro_sv)); 1594 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1595
1596 coro_enq (aTHX_ coro);
1009 ++coro_nready; 1597 ++coro_nready;
1010 UNLOCK; 1598
1599 if (sv_hook)
1600 {
1601 dSP;
1602
1603 ENTER;
1604 SAVETMPS;
1605
1606 PUSHMARK (SP);
1607 PUTBACK;
1608 call_sv (sv_hook, G_VOID | G_DISCARD);
1609
1610 FREETMPS;
1611 LEAVE;
1612 }
1613
1614 if (xs_hook)
1615 xs_hook ();
1011 1616
1012 return 1; 1617 return 1;
1013} 1618}
1014 1619
1015static int 1620static int
1016api_is_ready (SV *coro_sv) 1621api_is_ready (pTHX_ SV *coro_sv)
1017{ 1622{
1018 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1623 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1019} 1624}
1020 1625
1626/* expects to own a reference to next->hv */
1627INLINE void
1628prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1629{
1630 SV *prev_sv = SvRV (coro_current);
1631
1632 ta->prev = SvSTATE_hv (prev_sv);
1633 ta->next = next;
1634
1635 TRANSFER_CHECK (*ta);
1636
1637 SvRV_set (coro_current, (SV *)next->hv);
1638
1639 free_coro_mortal (aTHX);
1640 coro_mortal = prev_sv;
1641}
1642
1021static void 1643static void
1022prepare_schedule (struct transfer_args *ta) 1644prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1023{ 1645{
1024 SV *prev_sv, *next_sv;
1025
1026 for (;;) 1646 for (;;)
1027 { 1647 {
1028 LOCK;
1029 next_sv = coro_deq (PRIO_MIN); 1648 SV *next_sv = coro_deq (aTHX);
1030 1649
1650 if (expect_true (next_sv))
1651 {
1652 struct coro *next = SvSTATE_hv (next_sv);
1653
1654 /* cannot transfer to destroyed coros, skip and look for next */
1655 if (expect_false (next->flags & CF_DESTROYED))
1656 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1657 else
1658 {
1659 next->flags &= ~CF_READY;
1660 --coro_nready;
1661
1662 return prepare_schedule_to (aTHX_ ta, next);
1663 }
1664 }
1665 else
1666 {
1031 /* nothing to schedule: call the idle handler */ 1667 /* nothing to schedule: call the idle handler */
1032 if (!next_sv) 1668 dSP;
1669
1670 ENTER;
1671 SAVETMPS;
1672
1673 PUSHMARK (SP);
1674 PUTBACK;
1675 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1676
1677 FREETMPS;
1678 LEAVE;
1679 }
1680 }
1681}
1682
1683INLINE void
1684prepare_cede (pTHX_ struct coro_transfer_args *ta)
1685{
1686 api_ready (aTHX_ coro_current);
1687 prepare_schedule (aTHX_ ta);
1688}
1689
1690INLINE void
1691prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1692{
1693 SV *prev = SvRV (coro_current);
1694
1695 if (coro_nready)
1696 {
1697 prepare_schedule (aTHX_ ta);
1698 api_ready (aTHX_ prev);
1699 }
1700 else
1701 prepare_nop (aTHX_ ta);
1702}
1703
1704static void
1705api_schedule (pTHX)
1706{
1707 struct coro_transfer_args ta;
1708
1709 prepare_schedule (aTHX_ &ta);
1710 TRANSFER (ta, 1);
1711}
1712
1713static void
1714api_schedule_to (pTHX_ SV *coro_sv)
1715{
1716 struct coro_transfer_args ta;
1717 struct coro *next = SvSTATE (coro_sv);
1718
1719 SvREFCNT_inc_NN (coro_sv);
1720 prepare_schedule_to (aTHX_ &ta, next);
1721}
1722
1723static int
1724api_cede (pTHX)
1725{
1726 struct coro_transfer_args ta;
1727
1728 prepare_cede (aTHX_ &ta);
1729
1730 if (expect_true (ta.prev != ta.next))
1731 {
1732 TRANSFER (ta, 1);
1733 return 1;
1734 }
1735 else
1736 return 0;
1737}
1738
1739static int
1740api_cede_notself (pTHX)
1741{
1742 if (coro_nready)
1743 {
1744 struct coro_transfer_args ta;
1745
1746 prepare_cede_notself (aTHX_ &ta);
1747 TRANSFER (ta, 1);
1748 return 1;
1749 }
1750 else
1751 return 0;
1752}
1753
1754static void
1755api_trace (pTHX_ SV *coro_sv, int flags)
1756{
1757 struct coro *coro = SvSTATE (coro_sv);
1758
1759 if (flags & CC_TRACE)
1760 {
1761 if (!coro->cctx)
1762 coro->cctx = cctx_new_run ();
1763 else if (!(coro->cctx->flags & CC_TRACE))
1764 croak ("cannot enable tracing on coroutine with custom stack,");
1765
1766 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1767 }
1768 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1769 {
1770 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1771
1772 if (coro->flags & CF_RUNNING)
1773 PL_runops = RUNOPS_DEFAULT;
1774 else
1775 coro->slot->runops = RUNOPS_DEFAULT;
1776 }
1777}
1778
1779static void
1780coro_call_on_destroy (pTHX_ struct coro *coro)
1781{
1782 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1783 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1784
1785 if (on_destroyp)
1786 {
1787 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1788
1789 while (AvFILLp (on_destroy) >= 0)
1790 {
1791 dSP; /* don't disturb outer sp */
1792 SV *cb = av_pop (on_destroy);
1793
1794 PUSHMARK (SP);
1795
1796 if (statusp)
1797 {
1798 int i;
1799 AV *status = (AV *)SvRV (*statusp);
1800 EXTEND (SP, AvFILLp (status) + 1);
1801
1802 for (i = 0; i <= AvFILLp (status); ++i)
1803 PUSHs (AvARRAY (status)[i]);
1804 }
1805
1806 PUTBACK;
1807 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1808 }
1809 }
1810}
1811
1812static void
1813slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1814{
1815 int i;
1816 HV *hv = (HV *)SvRV (coro_current);
1817 AV *av = newAV ();
1818
1819 av_extend (av, items - 1);
1820 for (i = 0; i < items; ++i)
1821 av_push (av, SvREFCNT_inc_NN (arg [i]));
1822
1823 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1824
1825 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1826 api_ready (aTHX_ sv_manager);
1827
1828 frame->prepare = prepare_schedule;
1829 frame->check = slf_check_repeat;
1830}
1831
1832/*****************************************************************************/
1833/* async pool handler */
1834
1835static int
1836slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1837{
1838 HV *hv = (HV *)SvRV (coro_current);
1839 struct coro *coro = (struct coro *)frame->data;
1840
1841 if (!coro->invoke_cb)
1842 return 1; /* loop till we have invoke */
1843 else
1844 {
1845 hv_store (hv, "desc", sizeof ("desc") - 1,
1846 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1847
1848 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1849
1850 {
1851 dSP;
1852 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1853 PUTBACK;
1854 }
1855
1856 SvREFCNT_dec (GvAV (PL_defgv));
1857 GvAV (PL_defgv) = coro->invoke_av;
1858 coro->invoke_av = 0;
1859
1860 return 0;
1861 }
1862}
1863
1864static void
1865slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 HV *hv = (HV *)SvRV (coro_current);
1868 struct coro *coro = SvSTATE_hv ((SV *)hv);
1869
1870 if (expect_true (coro->saved_deffh))
1871 {
1872 /* subsequent iteration */
1873 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1874 coro->saved_deffh = 0;
1875
1876 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1877 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1878 {
1879 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1880 coro->invoke_av = newAV ();
1881
1882 frame->prepare = prepare_nop;
1883 }
1884 else
1885 {
1886 av_clear (GvAV (PL_defgv));
1887 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1888
1889 coro->prio = 0;
1890
1891 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1892 api_trace (aTHX_ coro_current, 0);
1893
1894 frame->prepare = prepare_schedule;
1895 av_push (av_async_pool, SvREFCNT_inc (hv));
1896 }
1897 }
1898 else
1899 {
1900 /* first iteration, simply fall through */
1901 frame->prepare = prepare_nop;
1902 }
1903
1904 frame->check = slf_check_pool_handler;
1905 frame->data = (void *)coro;
1906}
1907
1908/*****************************************************************************/
1909/* rouse callback */
1910
1911#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1912
1913static void
1914coro_rouse_callback (pTHX_ CV *cv)
1915{
1916 dXSARGS;
1917 SV *data = (SV *)GENSUB_ARG;
1918
1919 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1920 {
1921 /* first call, set args */
1922 AV *av = newAV ();
1923 SV *coro = SvRV (data);
1924
1925 SvRV_set (data, (SV *)av);
1926 api_ready (aTHX_ coro);
1927 SvREFCNT_dec (coro);
1928
1929 /* better take a full copy of the arguments */
1930 while (items--)
1931 av_store (av, items, newSVsv (ST (items)));
1932 }
1933
1934 XSRETURN_EMPTY;
1935}
1936
1937static int
1938slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1939{
1940 SV *data = (SV *)frame->data;
1941
1942 if (CORO_THROW)
1943 return 0;
1944
1945 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1946 return 1;
1947
1948 /* now push all results on the stack */
1949 {
1950 dSP;
1951 AV *av = (AV *)SvRV (data);
1952 int i;
1953
1954 EXTEND (SP, AvFILLp (av) + 1);
1955 for (i = 0; i <= AvFILLp (av); ++i)
1956 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1957
1958 /* we have stolen the elements, so ste length to zero and free */
1959 AvFILLp (av) = -1;
1960 av_undef (av);
1961
1962 PUTBACK;
1963 }
1964
1965 return 0;
1966}
1967
1968static void
1969slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1970{
1971 SV *cb;
1972
1973 if (items)
1974 cb = arg [0];
1975 else
1976 {
1977 struct coro *coro = SvSTATE_current;
1978
1979 if (!coro->rouse_cb)
1980 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1981
1982 cb = sv_2mortal (coro->rouse_cb);
1983 coro->rouse_cb = 0;
1984 }
1985
1986 if (!SvROK (cb)
1987 || SvTYPE (SvRV (cb)) != SVt_PVCV
1988 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1989 croak ("Coro::rouse_wait called with illegal callback argument,");
1990
1991 {
1992 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1993 SV *data = (SV *)GENSUB_ARG;
1994
1995 frame->data = (void *)data;
1996 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1997 frame->check = slf_check_rouse_wait;
1998 }
1999}
2000
2001static SV *
2002coro_new_rouse_cb (pTHX)
2003{
2004 HV *hv = (HV *)SvRV (coro_current);
2005 struct coro *coro = SvSTATE_hv (hv);
2006 SV *data = newRV_inc ((SV *)hv);
2007 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2008
2009 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2010 SvREFCNT_dec (data); /* magicext increases the refcount */
2011
2012 SvREFCNT_dec (coro->rouse_cb);
2013 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2014
2015 return cb;
2016}
2017
2018/*****************************************************************************/
2019/* schedule-like-function opcode (SLF) */
2020
2021static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2022static const CV *slf_cv;
2023static SV **slf_argv;
2024static int slf_argc, slf_arga; /* count, allocated */
2025static I32 slf_ax; /* top of stack, for restore */
2026
2027/* this restores the stack in the case we patched the entersub, to */
2028/* recreate the stack frame as perl will on following calls */
2029/* since entersub cleared the stack */
2030static OP *
2031pp_restore (pTHX)
2032{
2033 int i;
2034 SV **SP = PL_stack_base + slf_ax;
2035
2036 PUSHMARK (SP);
2037
2038 EXTEND (SP, slf_argc + 1);
2039
2040 for (i = 0; i < slf_argc; ++i)
2041 PUSHs (sv_2mortal (slf_argv [i]));
2042
2043 PUSHs ((SV *)CvGV (slf_cv));
2044
2045 RETURNOP (slf_restore.op_first);
2046}
2047
2048static void
2049slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2050{
2051 SV **arg = (SV **)slf_frame.data;
2052
2053 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2054}
2055
2056static void
2057slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{
2059 if (items != 2)
2060 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2061
2062 frame->prepare = slf_prepare_transfer;
2063 frame->check = slf_check_nop;
2064 frame->data = (void *)arg; /* let's hope it will stay valid */
2065}
2066
2067static void
2068slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2069{
2070 frame->prepare = prepare_schedule;
2071 frame->check = slf_check_nop;
2072}
2073
2074static void
2075slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2076{
2077 struct coro *next = (struct coro *)slf_frame.data;
2078
2079 SvREFCNT_inc_NN (next->hv);
2080 prepare_schedule_to (aTHX_ ta, next);
2081}
2082
2083static void
2084slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (!items)
2087 croak ("Coro::schedule_to expects a coroutine argument, caught");
2088
2089 frame->data = (void *)SvSTATE (arg [0]);
2090 frame->prepare = slf_prepare_schedule_to;
2091 frame->check = slf_check_nop;
2092}
2093
2094static void
2095slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 api_ready (aTHX_ SvRV (coro_current));
2098
2099 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2100}
2101
2102static void
2103slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 frame->prepare = prepare_cede;
2106 frame->check = slf_check_nop;
2107}
2108
2109static void
2110slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2111{
2112 frame->prepare = prepare_cede_notself;
2113 frame->check = slf_check_nop;
2114}
2115
2116/*
2117 * these not obviously related functions are all rolled into one
2118 * function to increase chances that they all will call transfer with the same
2119 * stack offset
2120 * SLF stands for "schedule-like-function".
2121 */
2122static OP *
2123pp_slf (pTHX)
2124{
2125 I32 checkmark; /* mark SP to see how many elements check has pushed */
2126
2127 /* set up the slf frame, unless it has already been set-up */
2128 /* the latter happens when a new coro has been started */
2129 /* or when a new cctx was attached to an existing coroutine */
2130 if (expect_true (!slf_frame.prepare))
2131 {
2132 /* first iteration */
2133 dSP;
2134 SV **arg = PL_stack_base + TOPMARK + 1;
2135 int items = SP - arg; /* args without function object */
2136 SV *gv = *sp;
2137
2138 /* do a quick consistency check on the "function" object, and if it isn't */
2139 /* for us, divert to the real entersub */
2140 if (SvTYPE (gv) != SVt_PVGV
2141 || !GvCV (gv)
2142 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2143 return PL_ppaddr[OP_ENTERSUB](aTHX);
2144
2145 if (!(PL_op->op_flags & OPf_STACKED))
2146 {
2147 /* ampersand-form of call, use @_ instead of stack */
2148 AV *av = GvAV (PL_defgv);
2149 arg = AvARRAY (av);
2150 items = AvFILLp (av) + 1;
2151 }
2152
2153 /* now call the init function, which needs to set up slf_frame */
2154 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2155 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2156
2157 /* pop args */
2158 SP = PL_stack_base + POPMARK;
2159
2160 PUTBACK;
2161 }
2162
2163 /* now that we have a slf_frame, interpret it! */
2164 /* we use a callback system not to make the code needlessly */
2165 /* complicated, but so we can run multiple perl coros from one cctx */
2166
2167 do
2168 {
2169 struct coro_transfer_args ta;
2170
2171 slf_frame.prepare (aTHX_ &ta);
2172 TRANSFER (ta, 0);
2173
2174 checkmark = PL_stack_sp - PL_stack_base;
2175 }
2176 while (slf_frame.check (aTHX_ &slf_frame));
2177
2178 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2179
2180 /* exception handling */
2181 if (expect_false (CORO_THROW))
2182 {
2183 SV *exception = sv_2mortal (CORO_THROW);
2184
2185 CORO_THROW = 0;
2186 sv_setsv (ERRSV, exception);
2187 croak (0);
2188 }
2189
2190 /* return value handling - mostly like entersub */
2191 /* make sure we put something on the stack in scalar context */
2192 if (GIMME_V == G_SCALAR)
2193 {
2194 dSP;
2195 SV **bot = PL_stack_base + checkmark;
2196
2197 if (sp == bot) /* too few, push undef */
2198 bot [1] = &PL_sv_undef;
2199 else if (sp != bot + 1) /* too many, take last one */
2200 bot [1] = *sp;
2201
2202 SP = bot + 1;
2203
2204 PUTBACK;
2205 }
2206
2207 return NORMAL;
2208}
2209
2210static void
2211api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2212{
2213 int i;
2214 SV **arg = PL_stack_base + ax;
2215 int items = PL_stack_sp - arg + 1;
2216
2217 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2218
2219 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2220 && PL_op->op_ppaddr != pp_slf)
2221 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2222
2223 CvFLAGS (cv) |= CVf_SLF;
2224 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2225 slf_cv = cv;
2226
2227 /* we patch the op, and then re-run the whole call */
2228 /* we have to put the same argument on the stack for this to work */
2229 /* and this will be done by pp_restore */
2230 slf_restore.op_next = (OP *)&slf_restore;
2231 slf_restore.op_type = OP_CUSTOM;
2232 slf_restore.op_ppaddr = pp_restore;
2233 slf_restore.op_first = PL_op;
2234
2235 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2236
2237 if (PL_op->op_flags & OPf_STACKED)
2238 {
2239 if (items > slf_arga)
2240 {
2241 slf_arga = items;
2242 free (slf_argv);
2243 slf_argv = malloc (slf_arga * sizeof (SV *));
2244 }
2245
2246 slf_argc = items;
2247
2248 for (i = 0; i < items; ++i)
2249 slf_argv [i] = SvREFCNT_inc (arg [i]);
2250 }
2251 else
2252 slf_argc = 0;
2253
2254 PL_op->op_ppaddr = pp_slf;
2255 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2256
2257 PL_op = (OP *)&slf_restore;
2258}
2259
2260/*****************************************************************************/
2261/* PerlIO::cede */
2262
2263typedef struct
2264{
2265 PerlIOBuf base;
2266 NV next, every;
2267} PerlIOCede;
2268
2269static IV
2270PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2271{
2272 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2273
2274 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2275 self->next = nvtime () + self->every;
2276
2277 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2278}
2279
2280static SV *
2281PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2282{
2283 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2284
2285 return newSVnv (self->every);
2286}
2287
2288static IV
2289PerlIOCede_flush (pTHX_ PerlIO *f)
2290{
2291 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2292 double now = nvtime ();
2293
2294 if (now >= self->next)
2295 {
2296 api_cede (aTHX);
2297 self->next = now + self->every;
2298 }
2299
2300 return PerlIOBuf_flush (aTHX_ f);
2301}
2302
2303static PerlIO_funcs PerlIO_cede =
2304{
2305 sizeof(PerlIO_funcs),
2306 "cede",
2307 sizeof(PerlIOCede),
2308 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2309 PerlIOCede_pushed,
2310 PerlIOBuf_popped,
2311 PerlIOBuf_open,
2312 PerlIOBase_binmode,
2313 PerlIOCede_getarg,
2314 PerlIOBase_fileno,
2315 PerlIOBuf_dup,
2316 PerlIOBuf_read,
2317 PerlIOBuf_unread,
2318 PerlIOBuf_write,
2319 PerlIOBuf_seek,
2320 PerlIOBuf_tell,
2321 PerlIOBuf_close,
2322 PerlIOCede_flush,
2323 PerlIOBuf_fill,
2324 PerlIOBase_eof,
2325 PerlIOBase_error,
2326 PerlIOBase_clearerr,
2327 PerlIOBase_setlinebuf,
2328 PerlIOBuf_get_base,
2329 PerlIOBuf_bufsiz,
2330 PerlIOBuf_get_ptr,
2331 PerlIOBuf_get_cnt,
2332 PerlIOBuf_set_ptrcnt,
2333};
2334
2335/*****************************************************************************/
2336/* Coro::Semaphore & Coro::Signal */
2337
2338static SV *
2339coro_waitarray_new (pTHX_ int count)
2340{
2341 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2342 AV *av = newAV ();
2343 SV **ary;
2344
2345 /* unfortunately, building manually saves memory */
2346 Newx (ary, 2, SV *);
2347 AvALLOC (av) = ary;
2348 /*AvARRAY (av) = ary;*/
2349 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2350 AvMAX (av) = 1;
2351 AvFILLp (av) = 0;
2352 ary [0] = newSViv (count);
2353
2354 return newRV_noinc ((SV *)av);
2355}
2356
2357/* semaphore */
2358
2359static void
2360coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2361{
2362 SV *count_sv = AvARRAY (av)[0];
2363 IV count = SvIVX (count_sv);
2364
2365 count += adjust;
2366 SvIVX (count_sv) = count;
2367
2368 /* now wake up as many waiters as are expected to lock */
2369 while (count > 0 && AvFILLp (av) > 0)
2370 {
2371 SV *cb;
2372
2373 /* swap first two elements so we can shift a waiter */
2374 AvARRAY (av)[0] = AvARRAY (av)[1];
2375 AvARRAY (av)[1] = count_sv;
2376 cb = av_shift (av);
2377
2378 if (SvOBJECT (cb))
2379 {
2380 api_ready (aTHX_ cb);
2381 --count;
2382 }
2383 else if (SvTYPE (cb) == SVt_PVCV)
1033 { 2384 {
1034 dSP; 2385 dSP;
1035 UNLOCK;
1036
1037 ENTER;
1038 SAVETMPS;
1039
1040 PUSHMARK (SP); 2386 PUSHMARK (SP);
2387 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1041 PUTBACK; 2388 PUTBACK;
1042 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 2389 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1043
1044 FREETMPS;
1045 LEAVE;
1046 continue;
1047 } 2390 }
1048 2391
1049 ta->next = SvSTATE (next_sv); 2392 SvREFCNT_dec (cb);
2393 }
2394}
1050 2395
1051 /* cannot transfer to destroyed coros, skip and look for next */ 2396static void
1052 if (ta->next->flags & CF_DESTROYED) 2397coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2398{
2399 /* call $sem->adjust (0) to possibly wake up some other waiters */
2400 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2401}
2402
2403static int
2404slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2405{
2406 AV *av = (AV *)frame->data;
2407 SV *count_sv = AvARRAY (av)[0];
2408
2409 /* if we are about to throw, don't actually acquire the lock, just throw */
2410 if (CORO_THROW)
2411 return 0;
2412 else if (SvIVX (count_sv) > 0)
2413 {
2414 SvSTATE_current->on_destroy = 0;
2415
2416 if (acquire)
2417 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2418 else
2419 coro_semaphore_adjust (aTHX_ av, 0);
2420
2421 return 0;
2422 }
2423 else
2424 {
2425 int i;
2426 /* if we were woken up but can't down, we look through the whole */
2427 /* waiters list and only add us if we aren't in there already */
2428 /* this avoids some degenerate memory usage cases */
2429
2430 for (i = 1; i <= AvFILLp (av); ++i)
2431 if (AvARRAY (av)[i] == SvRV (coro_current))
2432 return 1;
2433
2434 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2435 return 1;
2436 }
2437}
2438
2439static int
2440slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2441{
2442 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2443}
2444
2445static int
2446slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2447{
2448 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2449}
2450
2451static void
2452slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2453{
2454 AV *av = (AV *)SvRV (arg [0]);
2455
2456 if (SvIVX (AvARRAY (av)[0]) > 0)
2457 {
2458 frame->data = (void *)av;
2459 frame->prepare = prepare_nop;
2460 }
2461 else
2462 {
2463 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2464
2465 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2466 frame->prepare = prepare_schedule;
2467
2468 /* to avoid race conditions when a woken-up coro gets terminated */
2469 /* we arrange for a temporary on_destroy that calls adjust (0) */
2470 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2471 }
2472}
2473
2474static void
2475slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2476{
2477 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2478 frame->check = slf_check_semaphore_down;
2479}
2480
2481static void
2482slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2483{
2484 if (items >= 2)
2485 {
2486 /* callback form */
2487 AV *av = (AV *)SvRV (arg [0]);
2488 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2489
2490 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2491
2492 if (SvIVX (AvARRAY (av)[0]) > 0)
2493 coro_semaphore_adjust (aTHX_ av, 0);
2494
2495 frame->prepare = prepare_nop;
2496 frame->check = slf_check_nop;
2497 }
2498 else
2499 {
2500 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2501 frame->check = slf_check_semaphore_wait;
2502 }
2503}
2504
2505/* signal */
2506
2507static void
2508coro_signal_wake (pTHX_ AV *av, int count)
2509{
2510 SvIVX (AvARRAY (av)[0]) = 0;
2511
2512 /* now signal count waiters */
2513 while (count > 0 && AvFILLp (av) > 0)
2514 {
2515 SV *cb;
2516
2517 /* swap first two elements so we can shift a waiter */
2518 cb = AvARRAY (av)[0];
2519 AvARRAY (av)[0] = AvARRAY (av)[1];
2520 AvARRAY (av)[1] = cb;
2521
2522 cb = av_shift (av);
2523
2524 api_ready (aTHX_ cb);
2525 sv_setiv (cb, 0); /* signal waiter */
2526 SvREFCNT_dec (cb);
2527
2528 --count;
2529 }
2530}
2531
2532static int
2533slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2534{
2535 /* if we are about to throw, also stop waiting */
2536 return SvROK ((SV *)frame->data) && !CORO_THROW;
2537}
2538
2539static void
2540slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{
2542 AV *av = (AV *)SvRV (arg [0]);
2543
2544 if (SvIVX (AvARRAY (av)[0]))
2545 {
2546 SvIVX (AvARRAY (av)[0]) = 0;
2547 frame->prepare = prepare_nop;
2548 frame->check = slf_check_nop;
2549 }
2550 else
2551 {
2552 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2553
2554 av_push (av, waiter);
2555
2556 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2557 frame->prepare = prepare_schedule;
2558 frame->check = slf_check_signal_wait;
2559 }
2560}
2561
2562/*****************************************************************************/
2563/* Coro::AIO */
2564
2565#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2566
2567/* helper storage struct */
2568struct io_state
2569{
2570 int errorno;
2571 I32 laststype; /* U16 in 5.10.0 */
2572 int laststatval;
2573 Stat_t statcache;
2574};
2575
2576static void
2577coro_aio_callback (pTHX_ CV *cv)
2578{
2579 dXSARGS;
2580 AV *state = (AV *)GENSUB_ARG;
2581 SV *coro = av_pop (state);
2582 SV *data_sv = newSV (sizeof (struct io_state));
2583
2584 av_extend (state, items - 1);
2585
2586 sv_upgrade (data_sv, SVt_PV);
2587 SvCUR_set (data_sv, sizeof (struct io_state));
2588 SvPOK_only (data_sv);
2589
2590 {
2591 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2592
2593 data->errorno = errno;
2594 data->laststype = PL_laststype;
2595 data->laststatval = PL_laststatval;
2596 data->statcache = PL_statcache;
2597 }
2598
2599 /* now build the result vector out of all the parameters and the data_sv */
2600 {
2601 int i;
2602
2603 for (i = 0; i < items; ++i)
2604 av_push (state, SvREFCNT_inc_NN (ST (i)));
2605 }
2606
2607 av_push (state, data_sv);
2608
2609 api_ready (aTHX_ coro);
2610 SvREFCNT_dec (coro);
2611 SvREFCNT_dec ((AV *)state);
2612}
2613
2614static int
2615slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2616{
2617 AV *state = (AV *)frame->data;
2618
2619 /* if we are about to throw, return early */
2620 /* this does not cancel the aio request, but at least */
2621 /* it quickly returns */
2622 if (CORO_THROW)
2623 return 0;
2624
2625 /* one element that is an RV? repeat! */
2626 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2627 return 1;
2628
2629 /* restore status */
2630 {
2631 SV *data_sv = av_pop (state);
2632 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2633
2634 errno = data->errorno;
2635 PL_laststype = data->laststype;
2636 PL_laststatval = data->laststatval;
2637 PL_statcache = data->statcache;
2638
2639 SvREFCNT_dec (data_sv);
2640 }
2641
2642 /* push result values */
2643 {
2644 dSP;
2645 int i;
2646
2647 EXTEND (SP, AvFILLp (state) + 1);
2648 for (i = 0; i <= AvFILLp (state); ++i)
2649 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2650
2651 PUTBACK;
2652 }
2653
2654 return 0;
2655}
2656
2657static void
2658slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2659{
2660 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2661 SV *coro_hv = SvRV (coro_current);
2662 struct coro *coro = SvSTATE_hv (coro_hv);
2663
2664 /* put our coroutine id on the state arg */
2665 av_push (state, SvREFCNT_inc_NN (coro_hv));
2666
2667 /* first see whether we have a non-zero priority and set it as AIO prio */
2668 if (coro->prio)
2669 {
2670 dSP;
2671
2672 static SV *prio_cv;
2673 static SV *prio_sv;
2674
2675 if (expect_false (!prio_cv))
1053 { 2676 {
1054 UNLOCK; 2677 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
1055 SvREFCNT_dec (next_sv); 2678 prio_sv = newSViv (0);
1056 /* coro_nready is already taken care of by destroy */
1057 continue;
1058 } 2679 }
1059 2680
1060 --coro_nready; 2681 PUSHMARK (SP);
1061 UNLOCK; 2682 sv_setiv (prio_sv, coro->prio);
1062 break; 2683 XPUSHs (prio_sv);
1063 }
1064 2684
1065 /* free this only after the transfer */ 2685 PUTBACK;
1066 prev_sv = SvRV (coro_current); 2686 call_sv (prio_cv, G_VOID | G_DISCARD);
1067 SvRV_set (coro_current, next_sv);
1068 ta->prev = SvSTATE (prev_sv);
1069
1070 assert (ta->next->flags & CF_READY);
1071 ta->next->flags &= ~CF_READY;
1072
1073 LOCK;
1074 free_coro_mortal ();
1075 coro_mortal = prev_sv;
1076 UNLOCK;
1077}
1078
1079static void
1080prepare_cede (struct transfer_args *ta)
1081{
1082 api_ready (coro_current);
1083 prepare_schedule (ta);
1084}
1085
1086static int
1087prepare_cede_notself (struct transfer_args *ta)
1088{
1089 if (coro_nready)
1090 { 2687 }
1091 SV *prev = SvRV (coro_current); 2688
1092 prepare_schedule (ta); 2689 /* now call the original request */
1093 api_ready (prev); 2690 {
1094 return 1; 2691 dSP;
2692 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2693 int i;
2694
2695 PUSHMARK (SP);
2696
2697 /* first push all args to the stack */
2698 EXTEND (SP, items + 1);
2699
2700 for (i = 0; i < items; ++i)
2701 PUSHs (arg [i]);
2702
2703 /* now push the callback closure */
2704 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2705
2706 /* now call the AIO function - we assume our request is uncancelable */
2707 PUTBACK;
2708 call_sv ((SV *)req, G_VOID | G_DISCARD);
1095 } 2709 }
1096 else
1097 return 0;
1098}
1099 2710
1100static void 2711 /* now that the requets is going, we loop toll we have a result */
1101api_schedule (void) 2712 frame->data = (void *)state;
1102{ 2713 frame->prepare = prepare_schedule;
1103 struct transfer_args ta; 2714 frame->check = slf_check_aio_req;
1104
1105 prepare_schedule (&ta);
1106 TRANSFER (ta);
1107} 2715}
1108 2716
1109static int 2717static void
1110api_cede (void) 2718coro_aio_req_xs (pTHX_ CV *cv)
1111{ 2719{
1112 struct transfer_args ta; 2720 dXSARGS;
1113 2721
1114 prepare_cede (&ta); 2722 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1115 2723
1116 if (ta.prev != ta.next) 2724 XSRETURN_EMPTY;
1117 {
1118 TRANSFER (ta);
1119 return 1;
1120 }
1121 else
1122 return 0;
1123} 2725}
1124 2726
1125static int 2727/*****************************************************************************/
1126api_cede_notself (void)
1127{
1128 struct transfer_args ta;
1129 2728
1130 if (prepare_cede_notself (&ta))
1131 {
1132 TRANSFER (ta);
1133 return 1;
1134 }
1135 else
1136 return 0;
1137}
1138
1139MODULE = Coro::State PACKAGE = Coro::State 2729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1140 2730
1141PROTOTYPES: DISABLE 2731PROTOTYPES: DISABLE
1142 2732
1143BOOT: 2733BOOT:
1144{ 2734{
1145#ifdef USE_ITHREADS 2735#ifdef USE_ITHREADS
1146 MUTEX_INIT (&coro_mutex); 2736# if CORO_PTHREAD
2737 coro_thx = PERL_GET_CONTEXT;
2738# endif
1147#endif 2739#endif
1148 BOOT_PAGESIZE; 2740 BOOT_PAGESIZE;
1149 2741
2742 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2743 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2744
2745 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2746 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2747 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2748
2749 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2750 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2751 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2752
1150 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2753 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1151 2754
2755 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2756 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1152 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2757 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1153 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1154 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1155 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1156 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2758 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1157 2759
1158 main_mainstack = PL_mainstack; 2760 main_mainstack = PL_mainstack;
2761 main_top_env = PL_top_env;
1159 2762
2763 while (main_top_env->je_prev)
2764 main_top_env = main_top_env->je_prev;
2765
2766 {
2767 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2768
2769 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2770 hv_store_ent (PL_custom_op_names, slf,
2771 newSVpv ("coro_slf", 0), 0);
2772
2773 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2774 hv_store_ent (PL_custom_op_descs, slf,
2775 newSVpv ("coro schedule like function", 0), 0);
2776 }
2777
1160 coroapi.ver = CORO_API_VERSION; 2778 coroapi.ver = CORO_API_VERSION;
2779 coroapi.rev = CORO_API_REVISION;
2780
1161 coroapi.transfer = api_transfer; 2781 coroapi.transfer = api_transfer;
2782
2783 coroapi.sv_state = SvSTATE_;
2784 coroapi.execute_slf = api_execute_slf;
2785 coroapi.prepare_nop = prepare_nop;
2786 coroapi.prepare_schedule = prepare_schedule;
2787 coroapi.prepare_cede = prepare_cede;
2788 coroapi.prepare_cede_notself = prepare_cede_notself;
2789
2790 {
2791 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2792
2793 if (!svp) croak ("Time::HiRes is required");
2794 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2795
2796 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2797 }
1162 2798
1163 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2799 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1164} 2800}
1165 2801
1166SV * 2802SV *
1167new (char *klass, ...) 2803new (char *klass, ...)
2804 ALIAS:
2805 Coro::new = 1
1168 CODE: 2806 CODE:
1169{ 2807{
1170 struct coro *coro; 2808 struct coro *coro;
2809 MAGIC *mg;
1171 HV *hv; 2810 HV *hv;
2811 CV *cb;
1172 int i; 2812 int i;
1173 2813
2814 if (items > 1)
2815 {
2816 cb = coro_sv_2cv (aTHX_ ST (1));
2817
2818 if (!ix)
2819 {
2820 if (CvISXSUB (cb))
2821 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2822
2823 if (!CvROOT (cb))
2824 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2825 }
2826 }
2827
1174 Newz (0, coro, 1, struct coro); 2828 Newz (0, coro, 1, struct coro);
1175 coro->args = newAV (); 2829 coro->args = newAV ();
1176 coro->save = CORO_SAVE_ALL;
1177 coro->flags = CF_NEW; 2830 coro->flags = CF_NEW;
1178 2831
2832 if (coro_first) coro_first->prev = coro;
2833 coro->next = coro_first;
2834 coro_first = coro;
2835
1179 hv = newHV (); 2836 coro->hv = hv = newHV ();
1180 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2837 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2838 mg->mg_flags |= MGf_DUP;
1181 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2839 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1182 2840
2841 if (items > 1)
2842 {
2843 av_extend (coro->args, items - 1 + ix - 1);
2844
2845 if (ix)
2846 {
2847 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2848 cb = cv_coro_run;
2849 }
2850
2851 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2852
1183 for (i = 1; i < items; i++) 2853 for (i = 2; i < items; i++)
1184 av_push (coro->args, newSVsv (ST (i))); 2854 av_push (coro->args, newSVsv (ST (i)));
2855 }
1185} 2856}
1186 OUTPUT: 2857 OUTPUT:
1187 RETVAL 2858 RETVAL
1188 2859
1189int 2860void
1190save (SV *coro, int new_save = -1) 2861transfer (...)
2862 PROTOTYPE: $$
1191 CODE: 2863 CODE:
1192 RETVAL = api_save (coro, new_save); 2864 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1193 OUTPUT:
1194 RETVAL
1195
1196void
1197_set_stacklevel (...)
1198 ALIAS:
1199 Coro::State::transfer = 1
1200 Coro::schedule = 2
1201 Coro::cede = 3
1202 Coro::cede_notself = 4
1203 CODE:
1204{
1205 struct transfer_args ta;
1206
1207 switch (ix)
1208 {
1209 case 0:
1210 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1211 ta.next = 0;
1212 break;
1213
1214 case 1:
1215 if (items != 2)
1216 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1217
1218 prepare_transfer (&ta, ST (0), ST (1));
1219 break;
1220
1221 case 2:
1222 prepare_schedule (&ta);
1223 break;
1224
1225 case 3:
1226 prepare_cede (&ta);
1227 break;
1228
1229 case 4:
1230 if (!prepare_cede_notself (&ta))
1231 XSRETURN_EMPTY;
1232
1233 break;
1234 }
1235
1236 BARRIER;
1237 TRANSFER (ta);
1238
1239 if (GIMME_V != G_VOID && ta.next != ta.prev)
1240 XSRETURN_YES;
1241}
1242 2865
1243bool 2866bool
1244_destroy (SV *coro_sv) 2867_destroy (SV *coro_sv)
1245 CODE: 2868 CODE:
1246 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 2869 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1247 OUTPUT: 2870 OUTPUT:
1248 RETVAL 2871 RETVAL
1249 2872
1250void 2873void
1251_exit (code) 2874_exit (int code)
1252 int code
1253 PROTOTYPE: $ 2875 PROTOTYPE: $
1254 CODE: 2876 CODE:
1255 _exit (code); 2877 _exit (code);
1256 2878
1257int 2879int
1258cctx_stacksize (int new_stacksize = 0) 2880cctx_stacksize (int new_stacksize = 0)
2881 PROTOTYPE: ;$
1259 CODE: 2882 CODE:
1260 RETVAL = coro_stacksize; 2883 RETVAL = cctx_stacksize;
1261 if (new_stacksize) 2884 if (new_stacksize)
2885 {
1262 coro_stacksize = new_stacksize; 2886 cctx_stacksize = new_stacksize;
2887 ++cctx_gen;
2888 }
1263 OUTPUT: 2889 OUTPUT:
1264 RETVAL 2890 RETVAL
1265 2891
1266int 2892int
2893cctx_max_idle (int max_idle = 0)
2894 PROTOTYPE: ;$
2895 CODE:
2896 RETVAL = cctx_max_idle;
2897 if (max_idle > 1)
2898 cctx_max_idle = max_idle;
2899 OUTPUT:
2900 RETVAL
2901
2902int
1267cctx_count () 2903cctx_count ()
2904 PROTOTYPE:
1268 CODE: 2905 CODE:
1269 RETVAL = cctx_count; 2906 RETVAL = cctx_count;
1270 OUTPUT: 2907 OUTPUT:
1271 RETVAL 2908 RETVAL
1272 2909
1273int 2910int
1274cctx_idle () 2911cctx_idle ()
2912 PROTOTYPE:
1275 CODE: 2913 CODE:
1276 RETVAL = cctx_idle; 2914 RETVAL = cctx_idle;
1277 OUTPUT: 2915 OUTPUT:
1278 RETVAL 2916 RETVAL
1279 2917
2918void
2919list ()
2920 PROTOTYPE:
2921 PPCODE:
2922{
2923 struct coro *coro;
2924 for (coro = coro_first; coro; coro = coro->next)
2925 if (coro->hv)
2926 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2927}
2928
2929void
2930call (Coro::State coro, SV *coderef)
2931 ALIAS:
2932 eval = 1
2933 CODE:
2934{
2935 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2936 {
2937 struct coro temp;
2938
2939 if (!(coro->flags & CF_RUNNING))
2940 {
2941 PUTBACK;
2942 save_perl (aTHX_ &temp);
2943 load_perl (aTHX_ coro);
2944 }
2945
2946 {
2947 dSP;
2948 ENTER;
2949 SAVETMPS;
2950 PUTBACK;
2951 PUSHSTACK;
2952 PUSHMARK (SP);
2953
2954 if (ix)
2955 eval_sv (coderef, 0);
2956 else
2957 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2958
2959 POPSTACK;
2960 SPAGAIN;
2961 FREETMPS;
2962 LEAVE;
2963 PUTBACK;
2964 }
2965
2966 if (!(coro->flags & CF_RUNNING))
2967 {
2968 save_perl (aTHX_ coro);
2969 load_perl (aTHX_ &temp);
2970 SPAGAIN;
2971 }
2972 }
2973}
2974
2975SV *
2976is_ready (Coro::State coro)
2977 PROTOTYPE: $
2978 ALIAS:
2979 is_ready = CF_READY
2980 is_running = CF_RUNNING
2981 is_new = CF_NEW
2982 is_destroyed = CF_DESTROYED
2983 CODE:
2984 RETVAL = boolSV (coro->flags & ix);
2985 OUTPUT:
2986 RETVAL
2987
2988void
2989throw (Coro::State self, SV *throw = &PL_sv_undef)
2990 PROTOTYPE: $;$
2991 CODE:
2992{
2993 struct coro *current = SvSTATE_current;
2994 SV **throwp = self == current ? &CORO_THROW : &self->except;
2995 SvREFCNT_dec (*throwp);
2996 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2997}
2998
2999void
3000api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3001 PROTOTYPE: $;$
3002 C_ARGS: aTHX_ coro, flags
3003
3004SV *
3005has_cctx (Coro::State coro)
3006 PROTOTYPE: $
3007 CODE:
3008 RETVAL = boolSV (!!coro->cctx);
3009 OUTPUT:
3010 RETVAL
3011
3012int
3013is_traced (Coro::State coro)
3014 PROTOTYPE: $
3015 CODE:
3016 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
3017 OUTPUT:
3018 RETVAL
3019
3020UV
3021rss (Coro::State coro)
3022 PROTOTYPE: $
3023 ALIAS:
3024 usecount = 1
3025 CODE:
3026 switch (ix)
3027 {
3028 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3029 case 1: RETVAL = coro->usecount; break;
3030 }
3031 OUTPUT:
3032 RETVAL
3033
3034void
3035force_cctx ()
3036 PROTOTYPE:
3037 CODE:
3038 SvSTATE_current->cctx->idle_sp = 0;
3039
3040void
3041swap_defsv (Coro::State self)
3042 PROTOTYPE: $
3043 ALIAS:
3044 swap_defav = 1
3045 CODE:
3046 if (!self->slot)
3047 croak ("cannot swap state with coroutine that has no saved state,");
3048 else
3049 {
3050 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3051 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3052
3053 SV *tmp = *src; *src = *dst; *dst = tmp;
3054 }
3055
3056
1280MODULE = Coro::State PACKAGE = Coro 3057MODULE = Coro::State PACKAGE = Coro
1281 3058
1282BOOT: 3059BOOT:
1283{ 3060{
1284 int i; 3061 int i;
1285 3062
3063 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3064 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3065 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3066 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3067 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3068 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3069 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3070 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3071
3072 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3073 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3074 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3075 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
3076
1286 coro_stash = gv_stashpv ("Coro", TRUE); 3077 coro_stash = gv_stashpv ("Coro", TRUE);
1287 3078
1288 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3079 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1289 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3080 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1290 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3081 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1291 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3082 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1292 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3083 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1293 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3084 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1294 3085
1295 coro_current = get_sv ("Coro::current", FALSE);
1296 SvREADONLY_on (coro_current);
1297
1298 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3086 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1299 coro_ready[i] = newAV (); 3087 coro_ready[i] = newAV ();
1300 3088
1301 { 3089 {
1302 SV *sv = perl_get_sv("Coro::API", 1); 3090 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1303 3091
1304 coroapi.schedule = api_schedule; 3092 coroapi.schedule = api_schedule;
1305 coroapi.save = api_save; 3093 coroapi.schedule_to = api_schedule_to;
1306 coroapi.cede = api_cede; 3094 coroapi.cede = api_cede;
1307 coroapi.cede_notself = api_cede_notself; 3095 coroapi.cede_notself = api_cede_notself;
1308 coroapi.ready = api_ready; 3096 coroapi.ready = api_ready;
1309 coroapi.is_ready = api_is_ready; 3097 coroapi.is_ready = api_is_ready;
1310 coroapi.nready = &coro_nready; 3098 coroapi.nready = coro_nready;
1311 coroapi.current = coro_current; 3099 coroapi.current = coro_current;
1312 3100
1313 GCoroAPI = &coroapi; 3101 /*GCoroAPI = &coroapi;*/
1314 sv_setiv (sv, (IV)&coroapi); 3102 sv_setiv (sv, (IV)&coroapi);
1315 SvREADONLY_on (sv); 3103 SvREADONLY_on (sv);
1316 } 3104 }
1317} 3105}
3106
3107void
3108terminate (...)
3109 CODE:
3110 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3111
3112void
3113schedule (...)
3114 CODE:
3115 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3116
3117void
3118schedule_to (...)
3119 CODE:
3120 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3121
3122void
3123cede_to (...)
3124 CODE:
3125 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3126
3127void
3128cede (...)
3129 CODE:
3130 CORO_EXECUTE_SLF_XS (slf_init_cede);
3131
3132void
3133cede_notself (...)
3134 CODE:
3135 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3136
3137void
3138_cancel (Coro::State self)
3139 CODE:
3140 coro_state_destroy (aTHX_ self);
3141 coro_call_on_destroy (aTHX_ self);
1318 3142
1319void 3143void
1320_set_current (SV *current) 3144_set_current (SV *current)
1321 PROTOTYPE: $ 3145 PROTOTYPE: $
1322 CODE: 3146 CODE:
1323 SvREFCNT_dec (SvRV (coro_current)); 3147 SvREFCNT_dec (SvRV (coro_current));
1324 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3148 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3149
3150void
3151_set_readyhook (SV *hook)
3152 PROTOTYPE: $
3153 CODE:
3154 SvREFCNT_dec (coro_readyhook);
3155 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1325 3156
1326int 3157int
1327prio (Coro::State coro, int newprio = 0) 3158prio (Coro::State coro, int newprio = 0)
3159 PROTOTYPE: $;$
1328 ALIAS: 3160 ALIAS:
1329 nice = 1 3161 nice = 1
1330 CODE: 3162 CODE:
1331{ 3163{
1332 RETVAL = coro->prio; 3164 RETVAL = coro->prio;
… …
1347 3179
1348SV * 3180SV *
1349ready (SV *self) 3181ready (SV *self)
1350 PROTOTYPE: $ 3182 PROTOTYPE: $
1351 CODE: 3183 CODE:
1352 RETVAL = boolSV (api_ready (self)); 3184 RETVAL = boolSV (api_ready (aTHX_ self));
1353 OUTPUT:
1354 RETVAL
1355
1356SV *
1357is_ready (SV *self)
1358 PROTOTYPE: $
1359 CODE:
1360 RETVAL = boolSV (api_is_ready (self));
1361 OUTPUT: 3185 OUTPUT:
1362 RETVAL 3186 RETVAL
1363 3187
1364int 3188int
1365nready (...) 3189nready (...)
… …
1367 CODE: 3191 CODE:
1368 RETVAL = coro_nready; 3192 RETVAL = coro_nready;
1369 OUTPUT: 3193 OUTPUT:
1370 RETVAL 3194 RETVAL
1371 3195
1372MODULE = Coro::State PACKAGE = Coro::AIO 3196void
3197_pool_handler (...)
3198 CODE:
3199 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3200
3201void
3202async_pool (SV *cv, ...)
3203 PROTOTYPE: &@
3204 PPCODE:
3205{
3206 HV *hv = (HV *)av_pop (av_async_pool);
3207 AV *av = newAV ();
3208 SV *cb = ST (0);
3209 int i;
3210
3211 av_extend (av, items - 2);
3212 for (i = 1; i < items; ++i)
3213 av_push (av, SvREFCNT_inc_NN (ST (i)));
3214
3215 if ((SV *)hv == &PL_sv_undef)
3216 {
3217 PUSHMARK (SP);
3218 EXTEND (SP, 2);
3219 PUSHs (sv_Coro);
3220 PUSHs ((SV *)cv_pool_handler);
3221 PUTBACK;
3222 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3223 SPAGAIN;
3224
3225 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3226 }
3227
3228 {
3229 struct coro *coro = SvSTATE_hv (hv);
3230
3231 assert (!coro->invoke_cb);
3232 assert (!coro->invoke_av);
3233 coro->invoke_cb = SvREFCNT_inc (cb);
3234 coro->invoke_av = av;
3235 }
3236
3237 api_ready (aTHX_ (SV *)hv);
3238
3239 if (GIMME_V != G_VOID)
3240 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3241 else
3242 SvREFCNT_dec (hv);
3243}
1373 3244
1374SV * 3245SV *
1375_get_state () 3246rouse_cb ()
3247 PROTOTYPE:
1376 CODE: 3248 CODE:
1377{ 3249 RETVAL = coro_new_rouse_cb (aTHX);
1378 struct io_state *data;
1379
1380 RETVAL = newSV (sizeof (struct io_state));
1381 data = (struct io_state *)SvPVX (RETVAL);
1382 SvCUR_set (RETVAL, sizeof (struct io_state));
1383 SvPOK_only (RETVAL);
1384
1385 data->errorno = errno;
1386 data->laststype = PL_laststype;
1387 data->laststatval = PL_laststatval;
1388 data->statcache = PL_statcache;
1389}
1390 OUTPUT: 3250 OUTPUT:
1391 RETVAL 3251 RETVAL
1392 3252
1393void 3253void
1394_set_state (char *data_) 3254rouse_wait (...)
1395 PROTOTYPE: $ 3255 PROTOTYPE: ;$
3256 PPCODE:
3257 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3258
3259
3260MODULE = Coro::State PACKAGE = PerlIO::cede
3261
3262BOOT:
3263 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3264
3265
3266MODULE = Coro::State PACKAGE = Coro::Semaphore
3267
3268SV *
3269new (SV *klass, SV *count = 0)
1396 CODE: 3270 CODE:
1397{ 3271 RETVAL = sv_bless (
1398 struct io_state *data = (void *)data_; 3272 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3273 GvSTASH (CvGV (cv))
3274 );
3275 OUTPUT:
3276 RETVAL
1399 3277
1400 errno = data->errorno; 3278# helper for Coro::Channel
1401 PL_laststype = data->laststype; 3279SV *
1402 PL_laststatval = data->laststatval; 3280_alloc (int count)
1403 PL_statcache = data->statcache; 3281 CODE:
1404} 3282 RETVAL = coro_waitarray_new (aTHX_ count);
3283 OUTPUT:
3284 RETVAL
1405 3285
3286SV *
3287count (SV *self)
3288 CODE:
3289 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3290 OUTPUT:
3291 RETVAL
3292
3293void
3294up (SV *self, int adjust = 1)
3295 ALIAS:
3296 adjust = 1
3297 CODE:
3298 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3299
3300void
3301down (...)
3302 CODE:
3303 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3304
3305void
3306wait (...)
3307 CODE:
3308 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3309
3310void
3311try (SV *self)
3312 PPCODE:
3313{
3314 AV *av = (AV *)SvRV (self);
3315 SV *count_sv = AvARRAY (av)[0];
3316 IV count = SvIVX (count_sv);
3317
3318 if (count > 0)
3319 {
3320 --count;
3321 SvIVX (count_sv) = count;
3322 XSRETURN_YES;
3323 }
3324 else
3325 XSRETURN_NO;
3326}
3327
3328void
3329waiters (SV *self)
3330 PPCODE:
3331{
3332 AV *av = (AV *)SvRV (self);
3333 int wcount = AvFILLp (av) + 1 - 1;
3334
3335 if (GIMME_V == G_SCALAR)
3336 XPUSHs (sv_2mortal (newSViv (wcount)));
3337 else
3338 {
3339 int i;
3340 EXTEND (SP, wcount);
3341 for (i = 1; i <= wcount; ++i)
3342 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3343 }
3344}
3345
3346MODULE = Coro::State PACKAGE = Coro::Signal
3347
3348SV *
3349new (SV *klass)
3350 CODE:
3351 RETVAL = sv_bless (
3352 coro_waitarray_new (aTHX_ 0),
3353 GvSTASH (CvGV (cv))
3354 );
3355 OUTPUT:
3356 RETVAL
3357
3358void
3359wait (...)
3360 CODE:
3361 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3362
3363void
3364broadcast (SV *self)
3365 CODE:
3366{
3367 AV *av = (AV *)SvRV (self);
3368 coro_signal_wake (aTHX_ av, AvFILLp (av));
3369}
3370
3371void
3372send (SV *self)
3373 CODE:
3374{
3375 AV *av = (AV *)SvRV (self);
3376
3377 if (AvFILLp (av))
3378 coro_signal_wake (aTHX_ av, 1);
3379 else
3380 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3381}
3382
3383IV
3384awaited (SV *self)
3385 CODE:
3386 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3387 OUTPUT:
3388 RETVAL
3389
3390
3391MODULE = Coro::State PACKAGE = Coro::AnyEvent
3392
3393BOOT:
3394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3395
3396void
3397_schedule (...)
3398 CODE:
3399{
3400 static int incede;
3401
3402 api_cede_notself (aTHX);
3403
3404 ++incede;
3405 while (coro_nready >= incede && api_cede (aTHX))
3406 ;
3407
3408 sv_setsv (sv_activity, &PL_sv_undef);
3409 if (coro_nready >= incede)
3410 {
3411 PUSHMARK (SP);
3412 PUTBACK;
3413 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3414 }
3415
3416 --incede;
3417}
3418
3419
3420MODULE = Coro::State PACKAGE = Coro::AIO
3421
3422void
3423_register (char *target, char *proto, SV *req)
3424 CODE:
3425{
3426 CV *req_cv = coro_sv_2cv (aTHX_ req);
3427 /* newXSproto doesn't return the CV on 5.8 */
3428 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3429 sv_setpv ((SV *)slf_cv, proto);
3430 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3431}
3432

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