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Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.327 by root, Mon Nov 24 06:07:16 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
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13/* the maximum number of idle cctx that will be pooled */
14#define MAX_IDLE_CCTX 8
15
16#define PERL_VERSION_ATLEAST(a,b,c) \
17 (PERL_REVISION > (a) \
18 || (PERL_REVISION == (a) \
19 && (PERL_VERSION > (b) \
20 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22#if !PERL_VERSION_ATLEAST (5,6,0)
23# ifndef PL_ppaddr
24# define PL_ppaddr ppaddr
25# endif
26# ifndef call_sv
27# define call_sv perl_call_sv
28# endif
29# ifndef get_sv
30# define get_sv perl_get_sv
31# endif
32# ifndef get_cv
33# define get_cv perl_get_cv
34# endif
35# ifndef IS_PADGV
36# define IS_PADGV(v) 0
37# endif
38# ifndef IS_PADCONST
39# define IS_PADCONST(v) 0
40# endif
41#endif
42
43/* 5.8.7 */
44#ifndef SvRV_set
45# define SvRV_set(s,v) SvRV(s) = (v)
46#endif
47 12
48#include <stdio.h> 13#include <stdio.h>
49#include <errno.h> 14#include <errno.h>
50#include <assert.h> 15#include <assert.h>
51 16
52#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 17#ifdef WIN32
53# undef STACKGUARD 18# undef setjmp
54#endif 19# undef longjmp
55 20# undef _exit
56#ifndef STACKGUARD 21# define setjmp _setjmp /* deep magic */
57# define STACKGUARD 0 22#else
23# include <inttypes.h> /* most portable stdint.h */
58#endif 24#endif
59 25
60#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
61# include <unistd.h> 27# include <unistd.h>
62# include <sys/mman.h> 28# include <sys/mman.h>
… …
78#else 44#else
79# define PAGESIZE 0 45# define PAGESIZE 0
80# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
81#endif 47#endif
82 48
83/* The next macro should declare a variable stacklevel that contains and approximation 49#if CORO_USE_VALGRIND
84 * to the current C stack pointer. Its property is that it changes with each call 50# include <valgrind/valgrind.h>
85 * and should be unique. */ 51#endif
52
53/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4;
55
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
110/* 5.8.7 */
111#ifndef SvRV_set
112# define SvRV_set(s,v) SvRV(s) = (v)
113#endif
114
115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116# undef CORO_STACKGUARD
117#endif
118
119#ifndef CORO_STACKGUARD
120# define CORO_STACKGUARD 0
121#endif
122
123/* prefer perl internal functions over our own? */
124#ifndef CORO_PREFER_PERL_FUNCTIONS
125# define CORO_PREFER_PERL_FUNCTIONS 0
126#endif
127
128/* The next macros try to return the current stack pointer, in an as
129 * portable way as possible. */
130#if __GNUC__ >= 4
86#define dSTACKLEVEL int stacklevel 131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
134# define dSTACKLEVEL volatile void *stacklevel
87#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
88 137
89#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
90 139
91#if __GNUC__ >= 3 140#if __GNUC__ >= 3
92# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
93#else 144#else
94# define attribute(x) 145# define attribute(x)
146# define expect(expr,value) (expr)
147# define INLINE static
95#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
96 152
97#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
98 154
99#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
100 157
101#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
102static perl_mutex coro_mutex; 159# if CORO_PTHREAD
103# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
104# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
105#else
106# define LOCK (void)0
107# define UNLOCK (void)0
108#endif 161# endif
162#endif
109 163
110struct io_state 164static double (*nvtime)(); /* so why doesn't it take void? */
111{
112 int errorno;
113 I32 laststype;
114 int laststatval;
115 Stat_t statcache;
116};
117 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
171static size_t cctx_stacksize = CORO_STACKSIZE;
118static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
119static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
174static JMPENV *main_top_env;
120static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
121static SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
182static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
187
188/* async_pool helper stuff */
189static SV *sv_pool_rss;
190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
122 199
123static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
124static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
125 202
203enum {
204 CC_MAPPED = 0x01,
205 CC_NOREUSE = 0x02, /* throw this away after tracing */
206 CC_TRACE = 0x04,
207 CC_TRACE_SUB = 0x08, /* trace sub calls */
208 CC_TRACE_LINE = 0x10, /* trace each statement */
209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
210};
211
126/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
127typedef struct coro_cctx { 213typedef struct coro_cctx
214{
128 struct coro_cctx *next; 215 struct coro_cctx *next;
129 216
130 /* the stack */ 217 /* the stack */
131 void *sptr; 218 void *sptr;
132 long ssize; /* positive == mmap, otherwise malloc */ 219 size_t ssize;
133 220
134 /* cpu state */ 221 /* cpu state */
135 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
136 JMPENV *top_env; 224 JMPENV *top_env;
137 coro_context cctx; 225 coro_context cctx;
138 226
139 int inuse; 227 U32 gen;
140
141#if USE_VALGRIND 228#if CORO_USE_VALGRIND
142 int valgrind_id; 229 int valgrind_id;
143#endif 230#endif
231 unsigned char flags;
144} coro_cctx; 232} coro_cctx;
145 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
146enum { 238enum {
147 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
148 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
149 CF_NEW = 0x0004, /* ahs never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
150}; 243};
151 244
152/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
153struct coro { 246typedef struct
154 /* the c coroutine allocated to this perl coroutine, if any */ 247{
155 coro_cctx *cctx; 248 SV *defsv;
156 249 AV *defav;
157 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
158 AV *args; 251 SV *irsgv;
159 int refcnt; 252 HV *hinthv;
160 int save; /* CORO_SAVE flags */
161 int flags; /* CF_ flags */
162
163 /* optionally saved, might be zero */
164 AV *defav; /* @_ */
165 SV *defsv; /* $_ */
166 SV *errsv; /* $@ */
167 SV *irssv; /* $/ */
168 SV *irssv_sv; /* real $/ cache */
169
170#define VAR(name,type) type name; 253#define VAR(name,type) type name;
171# include "state.h" 254# include "state.h"
172#undef VAR 255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
260/* this is a structure representing a perl-level coroutine */
261struct coro {
262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx;
264
265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */
269
270 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
276
277 /* statistics */
278 int usecount; /* number of transfers to this coro */
173 279
174 /* coro process data */ 280 /* coro process data */
175 int prio; 281 int prio;
282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
284
285 /* async_pool */
286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
289
290 /* linked list */
291 struct coro *next, *prev;
176}; 292};
177 293
178typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
179typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
180 296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
301
302/** Coro ********************************************************************/
303
304#define PRIO_MAX 3
305#define PRIO_HIGH 1
306#define PRIO_NORMAL 0
307#define PRIO_LOW -1
308#define PRIO_IDLE -3
309#define PRIO_MIN -4
310
311/* for Coro.pm */
312static SV *coro_current;
313static SV *coro_readyhook;
314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
316static struct coro *coro_first;
317#define coro_nready coroapi.nready
318
319/** lowlevel stuff **********************************************************/
320
321static SV *
322coro_get_sv (pTHX_ const char *name, int create)
323{
324#if PERL_VERSION_ATLEAST (5,10,0)
325 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
326 get_sv (name, create);
327#endif
328 return get_sv (name, create);
329}
330
181static AV * 331static AV *
332coro_get_av (pTHX_ const char *name, int create)
333{
334#if PERL_VERSION_ATLEAST (5,10,0)
335 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
336 get_av (name, create);
337#endif
338 return get_av (name, create);
339}
340
341static HV *
342coro_get_hv (pTHX_ const char *name, int create)
343{
344#if PERL_VERSION_ATLEAST (5,10,0)
345 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
346 get_hv (name, create);
347#endif
348 return get_hv (name, create);
349}
350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360static AV *
182coro_clone_padlist (CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
183{ 362{
184 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
185 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
186 365
187 newpadlist = newAV (); 366 newpadlist = newAV ();
188 AvREAL_off (newpadlist); 367 AvREAL_off (newpadlist);
189#if PERL_VERSION_ATLEAST (5,9,0) 368#if PERL_VERSION_ATLEAST (5,10,0)
190 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
191#else 370#else
192 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
193#endif 372#endif
194 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
195 --AvFILLp (padlist); 374 --AvFILLp (padlist);
196 375
197 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
198 av_store (newpadlist, 1, (SV *)newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
199 378
200 return newpadlist; 379 return newpadlist;
201} 380}
202 381
203static void 382static void
204free_padlist (AV *padlist) 383free_padlist (pTHX_ AV *padlist)
205{ 384{
206 /* may be during global destruction */ 385 /* may be during global destruction */
207 if (SvREFCNT (padlist)) 386 if (SvREFCNT (padlist))
208 { 387 {
209 I32 i = AvFILLp (padlist); 388 I32 i = AvFILLp (padlist);
… …
230 AV *padlist; 409 AV *padlist;
231 AV *av = (AV *)mg->mg_obj; 410 AV *av = (AV *)mg->mg_obj;
232 411
233 /* casting is fun. */ 412 /* casting is fun. */
234 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
235 free_padlist (padlist); 414 free_padlist (aTHX_ padlist);
236 415
237 SvREFCNT_dec (av); 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
238 417
239 return 0; 418 return 0;
240} 419}
241 420
421#define CORO_MAGIC_type_cv 26
242#define PERL_MAGIC_coro PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
243 423
244static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 424static MGVTBL coro_cv_vtbl = {
425 0, 0, 0, 0,
426 coro_cv_free
427};
245 428
246#define CORO_MAGIC(cv) \ 429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
247 SvMAGIC (cv) \ 431 ? SvMAGIC (sv) \
248 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 432 : mg_find (sv, type))
249 ? SvMAGIC (cv) \ 433
250 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
251 : 0 437 : 0)
438
439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
441
442INLINE struct coro *
443SvSTATE_ (pTHX_ SV *coro)
444{
445 HV *stash;
446 MAGIC *mg;
447
448 if (SvROK (coro))
449 coro = SvRV (coro);
450
451 if (expect_false (SvTYPE (coro) != SVt_PVHV))
452 croak ("Coro::State object required");
453
454 stash = SvSTASH (coro);
455 if (expect_false (stash != coro_stash && stash != coro_state_stash))
456 {
457 /* very slow, but rare, check */
458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
459 croak ("Coro::State object required");
460 }
461
462 mg = CORO_MAGIC_state (coro);
463 return (struct coro *)mg->mg_ptr;
464}
465
466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
252 471
253/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
254static void 473static void
255get_padlist (CV *cv) 474get_padlist (pTHX_ CV *cv)
256{ 475{
257 MAGIC *mg = CORO_MAGIC (cv); 476 MAGIC *mg = CORO_MAGIC_cv (cv);
258 AV *av; 477 AV *av;
259 478
260 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
261 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262 else 481 else
263 { 482 {
264#if 0 483#if CORO_PREFER_PERL_FUNCTIONS
265 /* this is probably cleaner, but also slower? */ 484 /* this is probably cleaner? but also slower! */
485 /* in practise, it seems to be less stable */
266 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
267 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
268 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
269 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
270#else 490#else
271 CvPADLIST (cv) = coro_clone_padlist (cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
272#endif 492#endif
273 } 493 }
274} 494}
275 495
276static void 496static void
277put_padlist (CV *cv) 497put_padlist (pTHX_ CV *cv)
278{ 498{
279 MAGIC *mg = CORO_MAGIC (cv); 499 MAGIC *mg = CORO_MAGIC_cv (cv);
280 AV *av; 500 AV *av;
281 501
282 if (!mg) 502 if (expect_false (!mg))
283 { 503 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
284 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
285 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
286 mg->mg_virtual = &vtbl_coro;
287 mg->mg_obj = (SV *)newAV ();
288 }
289 504
290 av = (AV *)mg->mg_obj; 505 av = (AV *)mg->mg_obj;
291 506
292 if (AvFILLp (av) >= AvMAX (av)) 507 if (expect_false (AvFILLp (av) >= AvMAX (av)))
293 av_extend (av, AvMAX (av) + 1); 508 av_extend (av, AvMAX (av) + 1);
294 509
295 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 510 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296} 511}
297 512
298#define SB do { 513/** load & save, init *******************************************************/
299#define SE } while (0)
300 514
301#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
302
303static void 515static void
304load_perl (Coro__State c) 516load_perl (pTHX_ Coro__State c)
305{ 517{
518 perl_slots *slot = c->slot;
519 c->slot = 0;
520
521 PL_mainstack = c->mainstack;
522
523 GvSV (PL_defgv) = slot->defsv;
524 GvAV (PL_defgv) = slot->defav;
525 GvSV (PL_errgv) = slot->errsv;
526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
528
306#define VAR(name,type) PL_ ## name = c->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
307# include "state.h" 530 # include "state.h"
308#undef VAR 531 #undef VAR
309
310 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313 if (c->irssv)
314 {
315 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
316 SvREFCNT_dec (c->irssv);
317 else
318 {
319 REPLACE_SV (PL_rs, c->irssv);
320 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321 sv_setsv (c->irssv_sv, PL_rs);
322 }
323 }
324 532
325 { 533 {
326 dSP; 534 dSP;
535
327 CV *cv; 536 CV *cv;
328 537
329 /* now do the ugly restore mess */ 538 /* now do the ugly restore mess */
330 while ((cv = (CV *)POPs)) 539 while (expect_true (cv = (CV *)POPs))
331 { 540 {
332 put_padlist (cv); /* mark this padlist as available */ 541 put_padlist (aTHX_ cv); /* mark this padlist as available */
333 CvDEPTH (cv) = PTR2IV (POPs); 542 CvDEPTH (cv) = PTR2IV (POPs);
334 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
335 } 544 }
336 545
337 PUTBACK; 546 PUTBACK;
338 } 547 }
339}
340 548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
551}
552
341static void 553static void
342save_perl (Coro__State c) 554save_perl (pTHX_ Coro__State c)
343{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
344 { 559 {
345 dSP; 560 dSP;
346 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
347 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
348 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
350 /* 565 /*
351 * the worst thing you can imagine happens first - we have to save 566 * the worst thing you can imagine happens first - we have to save
352 * (and reinitialize) all cv's in the whole callchain :( 567 * (and reinitialize) all cv's in the whole callchain :(
353 */ 568 */
354 569
355 EXTEND (SP, 3 + 1);
356 PUSHs (Nullsv); 570 XPUSHs (Nullsv);
357 /* this loop was inspired by pp_caller */ 571 /* this loop was inspired by pp_caller */
358 for (;;) 572 for (;;)
359 { 573 {
360 while (cxix >= 0) 574 while (expect_true (cxix >= 0))
361 { 575 {
362 PERL_CONTEXT *cx = &ccstk[cxix--]; 576 PERL_CONTEXT *cx = &ccstk[cxix--];
363 577
364 if (CxTYPE (cx) == CXt_SUB) 578 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
365 { 579 {
366 CV *cv = cx->blk_sub.cv; 580 CV *cv = cx->blk_sub.cv;
367 581
368 if (CvDEPTH (cv)) 582 if (expect_true (CvDEPTH (cv)))
369 { 583 {
370 EXTEND (SP, 3); 584 EXTEND (SP, 3);
371 PUSHs ((SV *)CvPADLIST (cv)); 585 PUSHs ((SV *)CvPADLIST (cv));
372 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 586 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
373 PUSHs ((SV *)cv); 587 PUSHs ((SV *)cv);
374 588
375 CvDEPTH (cv) = 0; 589 CvDEPTH (cv) = 0;
376 get_padlist (cv); 590 get_padlist (aTHX_ cv);
377 } 591 }
378 } 592 }
379 } 593 }
380 594
381 if (top_si->si_type == PERLSI_MAIN) 595 if (expect_true (top_si->si_type == PERLSI_MAIN))
382 break; 596 break;
383 597
384 top_si = top_si->si_prev; 598 top_si = top_si->si_prev;
385 ccstk = top_si->si_cxstack; 599 ccstk = top_si->si_cxstack;
386 cxix = top_si->si_cxix; 600 cxix = top_si->si_cxix;
387 } 601 }
388 602
389 PUTBACK; 603 PUTBACK;
390 } 604 }
391 605
392 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 606 /* allocate some space on the context stack for our purposes */
393 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 607 /* we manually unroll here, as usually 2 slots is enough */
394 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 608 if (SLOT_COUNT >= 1) CXINC;
395 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 609 if (SLOT_COUNT >= 2) CXINC;
610 if (SLOT_COUNT >= 3) CXINC;
611 {
612 int i;
613 for (i = 3; i < SLOT_COUNT; ++i)
614 CXINC;
615 }
616 cxstack_ix -= SLOT_COUNT; /* undo allocation */
396 617
618 c->mainstack = PL_mainstack;
619
620 {
621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
622
623 slot->defav = GvAV (PL_defgv);
624 slot->defsv = DEFSV;
625 slot->errsv = ERRSV;
626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
628
397#define VAR(name,type)c->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
398# include "state.h" 630 # include "state.h"
399#undef VAR 631 #undef VAR
632 }
400} 633}
401 634
402/* 635/*
403 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
404 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
405 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
406 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
407 */ 640 */
408#if USE_PERL_INIT_STACKS 641#if CORO_PREFER_PERL_FUNCTIONS
409# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
410#else 643#else
411
412static void 644static void
413coro_init_stacks () 645coro_init_stacks (pTHX)
414{ 646{
415 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 647 PL_curstackinfo = new_stackinfo(32, 8);
416 PL_curstackinfo->si_type = PERLSI_MAIN; 648 PL_curstackinfo->si_type = PERLSI_MAIN;
417 PL_curstack = PL_curstackinfo->si_stack; 649 PL_curstack = PL_curstackinfo->si_stack;
418 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
419 651
420 PL_stack_base = AvARRAY(PL_curstack); 652 PL_stack_base = AvARRAY(PL_curstack);
421 PL_stack_sp = PL_stack_base; 653 PL_stack_sp = PL_stack_base;
422 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 654 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
423 655
424 New(50,PL_tmps_stack,128,SV*); 656 New(50,PL_tmps_stack,32,SV*);
425 PL_tmps_floor = -1; 657 PL_tmps_floor = -1;
426 PL_tmps_ix = -1; 658 PL_tmps_ix = -1;
427 PL_tmps_max = 128; 659 PL_tmps_max = 32;
428 660
429 New(54,PL_markstack,32,I32); 661 New(54,PL_markstack,16,I32);
430 PL_markstack_ptr = PL_markstack; 662 PL_markstack_ptr = PL_markstack;
431 PL_markstack_max = PL_markstack + 32; 663 PL_markstack_max = PL_markstack + 16;
432 664
433#ifdef SET_MARK_OFFSET 665#ifdef SET_MARK_OFFSET
434 SET_MARK_OFFSET; 666 SET_MARK_OFFSET;
435#endif 667#endif
436 668
437 New(54,PL_scopestack,32,I32); 669 New(54,PL_scopestack,8,I32);
438 PL_scopestack_ix = 0; 670 PL_scopestack_ix = 0;
439 PL_scopestack_max = 32; 671 PL_scopestack_max = 8;
440 672
441 New(54,PL_savestack,64,ANY); 673 New(54,PL_savestack,24,ANY);
442 PL_savestack_ix = 0; 674 PL_savestack_ix = 0;
443 PL_savestack_max = 64; 675 PL_savestack_max = 24;
444 676
445#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
446 New(54,PL_retstack,16,OP*); 678 New(54,PL_retstack,4,OP*);
447 PL_retstack_ix = 0; 679 PL_retstack_ix = 0;
448 PL_retstack_max = 16; 680 PL_retstack_max = 4;
449#endif 681#endif
450} 682}
683#endif
451 684
452/* 685/*
453 * destroy the stacks, the callchain etc... 686 * destroy the stacks, the callchain etc...
454 */ 687 */
455static void 688static void
456coro_destroy_stacks () 689coro_destruct_stacks (pTHX)
457{ 690{
458 if (!IN_DESTRUCT)
459 {
460 /* restore all saved variables and stuff */
461 LEAVE_SCOPE (0);
462 assert (PL_tmps_floor == -1);
463
464 /* free all temporaries */
465 FREETMPS;
466 assert (PL_tmps_ix == -1);
467
468 POPSTACK_TO (PL_mainstack);
469 }
470
471 while (PL_curstackinfo->si_next) 691 while (PL_curstackinfo->si_next)
472 PL_curstackinfo = PL_curstackinfo->si_next; 692 PL_curstackinfo = PL_curstackinfo->si_next;
473 693
474 while (PL_curstackinfo) 694 while (PL_curstackinfo)
475 { 695 {
… …
485 705
486 Safefree (PL_tmps_stack); 706 Safefree (PL_tmps_stack);
487 Safefree (PL_markstack); 707 Safefree (PL_markstack);
488 Safefree (PL_scopestack); 708 Safefree (PL_scopestack);
489 Safefree (PL_savestack); 709 Safefree (PL_savestack);
490#if !PERL_VERSION_ATLEAST (5,9,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
491 Safefree (PL_retstack); 711 Safefree (PL_retstack);
492#endif 712#endif
493} 713}
494#endif
495 714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
723
724static size_t
725coro_rss (pTHX_ struct coro *coro)
726{
727 size_t rss = sizeof (*coro);
728
729 if (coro->mainstack)
730 {
731 if (coro->flags & CF_RUNNING)
732 {
733 #define SYM(sym) PL_ ## sym
734 CORO_RSS;
735 #undef SYM
736 }
737 else
738 {
739 #define SYM(sym) coro->slot->sym
740 CORO_RSS;
741 #undef SYM
742 }
743 }
744
745 return rss;
746}
747
748/** coroutine stack handling ************************************************/
749
750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
751static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
752static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
753
754/* apparently < 5.8.8 */
755#ifndef MgPV_nolen_const
756#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
757 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
758 (const char*)(mg)->mg_ptr)
759#endif
760
761/*
762 * This overrides the default magic get method of %SIG elements.
763 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
764 * and instead of tryign to save and restore the hash elements, we just provide
765 * readback here.
766 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
767 * not expecting this to actually change the hook. This is a potential problem
768 * when a schedule happens then, but we ignore this.
769 */
496static void 770static int
497setup_coro (struct coro *coro) 771coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
772{
773 const char *s = MgPV_nolen_const (mg);
774
775 if (*s == '_')
776 {
777 SV **svp = 0;
778
779 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
780 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
781
782 if (svp)
783 {
784 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
785 return 0;
786 }
787 }
788
789 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
790}
791
792static int
793coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
794{
795 const char *s = MgPV_nolen_const (mg);
796
797 if (*s == '_')
798 {
799 SV **svp = 0;
800
801 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
802 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
803
804 if (svp)
805 {
806 SV *old = *svp;
807 *svp = 0;
808 SvREFCNT_dec (old);
809 return 0;
810 }
811 }
812
813 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
814}
815
816static int
817coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
818{
819 const char *s = MgPV_nolen_const (mg);
820
821 if (*s == '_')
822 {
823 SV **svp = 0;
824
825 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
826 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
827
828 if (svp)
829 {
830 SV *old = *svp;
831 *svp = newSVsv (sv);
832 SvREFCNT_dec (old);
833 return 0;
834 }
835 }
836
837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
838}
839
840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
862coro_setup (pTHX_ struct coro *coro)
498{ 863{
499 /* 864 /*
500 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
501 */ 866 */
502
503 coro_init_stacks (); 867 coro_init_stacks (aTHX);
504 868
869 PL_runops = RUNOPS_DEFAULT;
505 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
506 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
507 PL_curpm = 0; 876 PL_curpm = 0;
877 PL_curpad = 0;
508 PL_localizing = 0; 878 PL_localizing = 0;
509 PL_dirty = 0; 879 PL_dirty = 0;
510 PL_restartop = 0; 880 PL_restartop = 0;
881#if PERL_VERSION_ATLEAST (5,10,0)
882 PL_parser = 0;
883#endif
884 PL_hints = 0;
885
886 /* recreate the die/warn hooks */
887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
889
890 GvSV (PL_defgv) = newSV (0);
891 GvAV (PL_defgv) = coro->args; coro->args = 0;
892 GvSV (PL_errgv) = newSV (0);
893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
895 PL_rs = newSVsv (GvSV (irsgv));
896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
511 897
512 { 898 {
513 dSP; 899 dSP;
514 LOGOP myop; 900 UNOP myop;
515 901
516 SvREFCNT_dec (GvAV (PL_defgv));
517 GvAV (PL_defgv) = coro->args; coro->args = 0;
518
519 Zero (&myop, 1, LOGOP); 902 Zero (&myop, 1, UNOP);
520 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
521 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
522 906
523 PUSHMARK (SP); 907 PUSHMARK (SP);
524 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 908 PUSHs ((SV *)coro->startcv);
525 PUTBACK; 909 PUTBACK;
526 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
527 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
528 SPAGAIN;
529 } 912 }
530 913
531 ENTER; /* necessary e.g. for dounwind */ 914 /* this newly created coroutine might be run on an existing cctx which most
532} 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
916 */
917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
533 919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
930}
931
534static void 932static void
933coro_destruct (pTHX_ struct coro *coro)
934{
935 if (!IN_DESTRUCT)
936 {
937 /* restore all saved variables and stuff */
938 LEAVE_SCOPE (0);
939 assert (PL_tmps_floor == -1);
940
941 /* free all temporaries */
942 FREETMPS;
943 assert (PL_tmps_ix == -1);
944
945 /* unwind all extra stacks */
946 POPSTACK_TO (PL_mainstack);
947
948 /* unwind main stack */
949 dounwind (-1);
950 }
951
952 SvREFCNT_dec (GvSV (PL_defgv));
953 SvREFCNT_dec (GvAV (PL_defgv));
954 SvREFCNT_dec (GvSV (PL_errgv));
955 SvREFCNT_dec (PL_defoutgv);
956 SvREFCNT_dec (PL_rs);
957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
959
960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962
963 SvREFCNT_dec (coro->saved_deffh);
964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
967
968 coro_destruct_stacks (aTHX);
969}
970
971INLINE void
535free_coro_mortal () 972free_coro_mortal (pTHX)
536{ 973{
537 if (coro_mortal) 974 if (expect_true (coro_mortal))
538 { 975 {
539 SvREFCNT_dec (coro_mortal); 976 SvREFCNT_dec (coro_mortal);
540 coro_mortal = 0; 977 coro_mortal = 0;
541 } 978 }
542} 979}
543 980
544/* inject a fake call to Coro::State::_cctx_init into the execution */ 981static int
982runops_trace (pTHX)
983{
984 COP *oldcop = 0;
985 int oldcxix = -2;
986
987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
988 {
989 PERL_ASYNC_CHECK ();
990
991 if (cctx_current->flags & CC_TRACE_ALL)
992 {
993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
994 {
995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
996 SV **bot, **top;
997 AV *av = newAV (); /* return values */
998 SV **cb;
999 dSP;
1000
1001 GV *gv = CvGV (cx->blk_sub.cv);
1002 SV *fullname = sv_2mortal (newSV (0));
1003 if (isGV (gv))
1004 gv_efullname3 (fullname, gv, 0);
1005
1006 bot = PL_stack_base + cx->blk_oldsp + 1;
1007 top = cx->blk_gimme == G_ARRAY ? SP + 1
1008 : cx->blk_gimme == G_SCALAR ? bot + 1
1009 : bot;
1010
1011 av_extend (av, top - bot);
1012 while (bot < top)
1013 av_push (av, SvREFCNT_inc_NN (*bot++));
1014
1015 PL_runops = RUNOPS_DEFAULT;
1016 ENTER;
1017 SAVETMPS;
1018 EXTEND (SP, 3);
1019 PUSHMARK (SP);
1020 PUSHs (&PL_sv_no);
1021 PUSHs (fullname);
1022 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1023 PUTBACK;
1024 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1025 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1026 SPAGAIN;
1027 FREETMPS;
1028 LEAVE;
1029 PL_runops = runops_trace;
1030 }
1031
1032 if (oldcop != PL_curcop)
1033 {
1034 oldcop = PL_curcop;
1035
1036 if (PL_curcop != &PL_compiling)
1037 {
1038 SV **cb;
1039
1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1041 {
1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1043
1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1045 {
1046 dSP;
1047 GV *gv = CvGV (cx->blk_sub.cv);
1048 SV *fullname = sv_2mortal (newSV (0));
1049
1050 if (isGV (gv))
1051 gv_efullname3 (fullname, gv, 0);
1052
1053 PL_runops = RUNOPS_DEFAULT;
1054 ENTER;
1055 SAVETMPS;
1056 EXTEND (SP, 3);
1057 PUSHMARK (SP);
1058 PUSHs (&PL_sv_yes);
1059 PUSHs (fullname);
1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1061 PUTBACK;
1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1064 SPAGAIN;
1065 FREETMPS;
1066 LEAVE;
1067 PL_runops = runops_trace;
1068 }
1069
1070 oldcxix = cxstack_ix;
1071 }
1072
1073 if (cctx_current->flags & CC_TRACE_LINE)
1074 {
1075 dSP;
1076
1077 PL_runops = RUNOPS_DEFAULT;
1078 ENTER;
1079 SAVETMPS;
1080 EXTEND (SP, 3);
1081 PL_runops = RUNOPS_DEFAULT;
1082 PUSHMARK (SP);
1083 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1084 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1085 PUTBACK;
1086 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1087 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1088 SPAGAIN;
1089 FREETMPS;
1090 LEAVE;
1091 PL_runops = runops_trace;
1092 }
1093 }
1094 }
1095 }
1096 }
1097
1098 TAINT_NOT;
1099 return 0;
1100}
1101
1102static struct CoroSLF cctx_ssl_frame;
1103
1104static void
1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1106{
1107 ta->prev = 0;
1108}
1109
1110static int
1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1112{
1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
545static void NOINLINE 1119static void NOINLINE
546prepare_cctx (coro_cctx *cctx) 1120cctx_prepare (pTHX)
547{ 1121{
548 dSP;
549 LOGOP myop;
550
551 Zero (&myop, 1, LOGOP);
552 myop.op_next = PL_op;
553 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
554
555 PUSHMARK (SP);
556 EXTEND (SP, 2);
557 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
558 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
559 PUTBACK;
560 PL_op = (OP *)&myop;
561 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
562 SPAGAIN;
563}
564
565static void
566coro_run (void *arg)
567{
568 /* coro_run is the alternative tail of transfer(), so unlock here. */
569 UNLOCK;
570
571 /*
572 * this is a _very_ stripped down perl interpreter ;)
573 */
574 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
575 1123
1124 if (cctx_current->flags & CC_TRACE)
1125 PL_runops = runops_trace;
1126
1127 /* we already must be executing an SLF op, there is no other valid way
1128 * that can lead to creation of a new cctx */
1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1131
1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1133 cctx_ssl_frame = slf_frame;
1134
1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1136 slf_frame.check = slf_check_set_stacklevel;
1137}
1138
1139/* the tail of transfer: execute stuff we can only do after a transfer */
1140INLINE void
1141transfer_tail (pTHX)
1142{
1143 free_coro_mortal (aTHX);
1144}
1145
1146/*
1147 * this is a _very_ stripped down perl interpreter ;)
1148 */
1149static void
1150cctx_run (void *arg)
1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
1158 dTHX;
1159
1160 /* normally we would need to skip the entersub here */
1161 /* not doing so will re-execute it, which is exactly what we want */
1162 /* PL_nop = PL_nop->op_next */
1163
576 /* inject call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
577 prepare_cctx ((coro_cctx *)arg); 1165 cctx_prepare (aTHX);
578 1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
579 /* somebody will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
580 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
581 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
582 1177
583 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1178 /*
584 abort (); 1179 * If perl-run returns we assume exit() was being called or the coro
1180 * fell off the end, which seems to be the only valid (non-bug)
1181 * reason for perl_run to return. We try to exit by jumping to the
1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1183 * coroutine as Coro has no such concept
1184 */
1185 PL_top_env = main_top_env;
1186 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1187 }
585} 1188}
586 1189
587static coro_cctx * 1190static coro_cctx *
588cctx_new () 1191cctx_new ()
589{ 1192{
590 coro_cctx *cctx; 1193 coro_cctx *cctx;
591 1194
592 ++cctx_count; 1195 ++cctx_count;
593
594 Newz (0, cctx, 1, coro_cctx); 1196 New (0, cctx, 1, coro_cctx);
1197
1198 cctx->gen = cctx_gen;
1199 cctx->flags = 0;
1200 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1201
1202 return cctx;
1203}
1204
1205/* create a new cctx only suitable as source */
1206static coro_cctx *
1207cctx_new_empty ()
1208{
1209 coro_cctx *cctx = cctx_new ();
1210
1211 cctx->sptr = 0;
1212 coro_create (&cctx->cctx, 0, 0, 0, 0);
1213
1214 return cctx;
1215}
1216
1217/* create a new cctx suitable as destination/running a perl interpreter */
1218static coro_cctx *
1219cctx_new_run ()
1220{
1221 coro_cctx *cctx = cctx_new ();
1222 void *stack_start;
1223 size_t stack_size;
595 1224
596#if HAVE_MMAP 1225#if HAVE_MMAP
597
598 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1226 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
599 /* mmap supposedly does allocate-on-write for us */ 1227 /* mmap supposedly does allocate-on-write for us */
600 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1228 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
601 1229
602 if (cctx->sptr == (void *)-1) 1230 if (cctx->sptr != (void *)-1)
1231 {
1232 #if CORO_STACKGUARD
1233 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1234 #endif
1235 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1236 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1237 cctx->flags |= CC_MAPPED;
603 { 1238 }
1239 else
1240#endif
1241 {
1242 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1243 New (0, cctx->sptr, cctx_stacksize, long);
1244
1245 if (!cctx->sptr)
1246 {
604 perror ("FATAL: unable to mmap stack for coroutine"); 1247 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
605 _exit (EXIT_FAILURE); 1248 _exit (EXIT_FAILURE);
606 } 1249 }
607 1250
608# if STACKGUARD 1251 stack_start = cctx->sptr;
609 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1252 stack_size = cctx->ssize;
610# endif
611
612#else
613
614 cctx->ssize = STACKSIZE * (long)sizeof (long);
615 New (0, cctx->sptr, STACKSIZE, long);
616
617 if (!cctx->sptr)
618 { 1253 }
619 perror ("FATAL: unable to malloc stack for coroutine");
620 _exit (EXIT_FAILURE);
621 }
622 1254
1255 #if CORO_USE_VALGRIND
1256 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
623#endif 1257 #endif
624 1258
625#if USE_VALGRIND 1259 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
626 cctx->valgrind_id = VALGRIND_STACK_REGISTER (
627 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
628 cctx->ssize + (char *)cctx->sptr
629 );
630#endif
631
632 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
633 1260
634 return cctx; 1261 return cctx;
635} 1262}
636 1263
637static void 1264static void
638cctx_destroy (coro_cctx *cctx) 1265cctx_destroy (coro_cctx *cctx)
639{ 1266{
640 if (!cctx) 1267 if (!cctx)
641 return; 1268 return;
642 1269
1270 assert (cctx != cctx_current);//D temporary
1271
643 --cctx_count; 1272 --cctx_count;
1273 coro_destroy (&cctx->cctx);
644 1274
645#if USE_VALGRIND 1275 /* coro_transfer creates new, empty cctx's */
1276 if (cctx->sptr)
1277 {
1278 #if CORO_USE_VALGRIND
646 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1279 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
647#endif 1280 #endif
648 1281
649#if HAVE_MMAP 1282#if HAVE_MMAP
1283 if (cctx->flags & CC_MAPPED)
650 munmap (cctx->sptr, cctx->ssize); 1284 munmap (cctx->sptr, cctx->ssize);
651#else 1285 else
1286#endif
652 Safefree (cctx->sptr); 1287 Safefree (cctx->sptr);
653#endif 1288 }
654 1289
655 Safefree (cctx); 1290 Safefree (cctx);
656} 1291}
657 1292
1293/* wether this cctx should be destructed */
1294#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1295
658static coro_cctx * 1296static coro_cctx *
659cctx_get () 1297cctx_get (pTHX)
660{ 1298{
661 coro_cctx *cctx; 1299 while (expect_true (cctx_first))
662
663 if (cctx_first)
664 { 1300 {
665 cctx = cctx_first; 1301 coro_cctx *cctx = cctx_first;
666 cctx_first = cctx->next; 1302 cctx_first = cctx->next;
667 --cctx_idle; 1303 --cctx_idle;
668 } 1304
669 else 1305 if (expect_true (!CCTX_EXPIRED (cctx)))
670 { 1306 return cctx;
671 cctx = cctx_new (); 1307
672 PL_op = PL_op->op_next; 1308 cctx_destroy (cctx);
673 } 1309 }
674 1310
675 return cctx; 1311 return cctx_new_run ();
676} 1312}
677 1313
678static void 1314static void
679cctx_put (coro_cctx *cctx) 1315cctx_put (coro_cctx *cctx)
680{ 1316{
1317 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1318
681 /* free another cctx if overlimit */ 1319 /* free another cctx if overlimit */
682 if (cctx_idle >= MAX_IDLE_CCTX) 1320 if (expect_false (cctx_idle >= cctx_max_idle))
683 { 1321 {
684 coro_cctx *first = cctx_first; 1322 coro_cctx *first = cctx_first;
685 cctx_first = first->next; 1323 cctx_first = first->next;
686 --cctx_idle; 1324 --cctx_idle;
687 1325
688 assert (!first->inuse);
689 cctx_destroy (first); 1326 cctx_destroy (first);
690 } 1327 }
691 1328
692 ++cctx_idle; 1329 ++cctx_idle;
693 cctx->next = cctx_first; 1330 cctx->next = cctx_first;
694 cctx_first = cctx; 1331 cctx_first = cctx;
695} 1332}
696 1333
697/* never call directly, always through the coro_state_transfer global variable */ 1334/** coroutine switching *****************************************************/
698static void NOINLINE 1335
1336static void
699transfer (struct coro *prev, struct coro *next) 1337transfer_check (pTHX_ struct coro *prev, struct coro *next)
1338{
1339 /* TODO: throwing up here is considered harmful */
1340
1341 if (expect_true (prev != next))
1342 {
1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1345
1346 if (expect_false (next->flags & CF_RUNNING))
1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1348
1349 if (expect_false (next->flags & CF_DESTROYED))
1350 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1351
1352#if !PERL_VERSION_ATLEAST (5,10,0)
1353 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1354 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1355#endif
1356 }
1357}
1358
1359/* always use the TRANSFER macro */
1360static void NOINLINE /* noinline so we have a fixed stackframe */
1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
700{ 1362{
701 dSTACKLEVEL; 1363 dSTACKLEVEL;
702 1364
703 /* sometimes transfer is only called to set idle_sp */ 1365 /* sometimes transfer is only called to set idle_sp */
704 if (!next) 1366 if (expect_false (!prev))
705 { 1367 {
706 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1368 cctx_current->idle_sp = STACKLEVEL;
707 assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */ 1369 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
708 }
709 else if (prev != next)
710 { 1370 }
1371 else if (expect_true (prev != next))
1372 {
711 coro_cctx *prev__cctx; 1373 coro_cctx *cctx_prev;
712 1374
713 if (prev->flags & CF_NEW) 1375 if (expect_false (prev->flags & CF_NEW))
714 { 1376 {
715 /* create a new empty context */ 1377 /* create a new empty/source context */
716 Newz (0, prev->cctx, 1, coro_cctx);
717 prev->cctx->inuse = 1;
718 prev->flags &= ~CF_NEW; 1378 prev->flags &= ~CF_NEW;
719 prev->flags |= CF_RUNNING; 1379 prev->flags |= CF_RUNNING;
720 } 1380 }
721 1381
722 /*TODO: must not croak here */
723 if (!prev->flags & CF_RUNNING)
724 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
725
726 if (next->flags & CF_RUNNING)
727 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
728
729 prev->flags &= ~CF_RUNNING; 1382 prev->flags &= ~CF_RUNNING;
730 next->flags |= CF_RUNNING; 1383 next->flags |= CF_RUNNING;
731 1384
732 LOCK; 1385 /* first get rid of the old state */
1386 save_perl (aTHX_ prev);
733 1387
734 if (next->flags & CF_NEW) 1388 if (expect_false (next->flags & CF_NEW))
735 { 1389 {
736 /* need to start coroutine */ 1390 /* need to start coroutine */
737 next->flags &= ~CF_NEW; 1391 next->flags &= ~CF_NEW;
738 /* first get rid of the old state */
739 save_perl (prev);
740 /* setup coroutine call */ 1392 /* setup coroutine call */
741 setup_coro (next); 1393 coro_setup (aTHX_ next);
742 /* need a new stack */
743 assert (!next->cctx);
744 } 1394 }
745 else 1395 else
1396 load_perl (aTHX_ next);
1397
1398 assert (!prev->cctx);//D temporary
1399
1400 /* possibly untie and reuse the cctx */
1401 if (expect_true (
1402 cctx_current->idle_sp == STACKLEVEL
1403 && !(cctx_current->flags & CC_TRACE)
1404 && !force_cctx
1405 ))
746 { 1406 {
747 /* coroutine already started */ 1407 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
748 save_perl (prev); 1408 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
749 load_perl (next); 1409
1410 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1411 /* without this the next cctx_get might destroy the running cctx while still in use */
1412 if (expect_false (CCTX_EXPIRED (cctx_current)))
1413 if (expect_true (!next->cctx))
1414 next->cctx = cctx_get (aTHX);
1415
1416 cctx_put (cctx_current);
750 } 1417 }
1418 else
1419 prev->cctx = cctx_current;
751 1420
752 prev__cctx = prev->cctx; 1421 ++next->usecount;
753 1422
754 /* possibly "free" the cctx */ 1423 cctx_prev = cctx_current;
755 if (prev__cctx->idle_sp == STACKLEVEL) 1424 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1425
1426 next->cctx = 0;
1427
1428 if (expect_false (cctx_prev != cctx_current))
756 { 1429 {
757 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1430 cctx_prev->top_env = PL_top_env;
758 assert (PL_top_env == prev__cctx->top_env); 1431 PL_top_env = cctx_current->top_env;
759 1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
760 prev->cctx = 0;
761
762 cctx_put (prev__cctx);
763 prev__cctx->inuse = 0;
764 } 1433 }
765 1434
766 if (!next->cctx) 1435 transfer_tail (aTHX);
767 {
768 next->cctx = cctx_get ();
769 assert (!next->cctx->inuse);
770 next->cctx->inuse = 1;
771 }
772
773 if (prev__cctx != next->cctx)
774 {
775 prev__cctx->top_env = PL_top_env;
776 PL_top_env = next->cctx->top_env;
777 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
778 }
779
780 free_coro_mortal ();
781
782 UNLOCK;
783 } 1436 }
784} 1437}
785 1438
786struct transfer_args 1439#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
787{
788 struct coro *prev, *next;
789};
790
791#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1440#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
792 1441
1442/** high level stuff ********************************************************/
1443
793static void 1444static int
794coro_state_destroy (struct coro *coro) 1445coro_state_destroy (pTHX_ struct coro *coro)
795{ 1446{
796 if (coro->refcnt--) 1447 if (coro->flags & CF_DESTROYED)
797 return; 1448 return 0;
1449
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro);
1452
1453 coro->flags |= CF_DESTROYED;
1454
1455 if (coro->flags & CF_READY)
1456 {
1457 /* reduce nready, as destroying a ready coro effectively unreadies it */
1458 /* alternative: look through all ready queues and remove the coro */
1459 --coro_nready;
1460 }
1461 else
1462 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
798 1463
799 if (coro->mainstack && coro->mainstack != main_mainstack) 1464 if (coro->mainstack && coro->mainstack != main_mainstack)
800 { 1465 {
801 struct coro temp; 1466 struct coro temp;
802 Zero (&temp, 1, struct coro);
803 temp.save = CORO_SAVE_ALL;
804 1467
805 if (coro->flags & CF_RUNNING) 1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
806 croak ("FATAL: tried to destroy currently running coroutine");
807 1469
808 save_perl (&temp); 1470 save_perl (aTHX_ &temp);
809 load_perl (coro); 1471 load_perl (aTHX_ coro);
810 1472
811 coro_destroy_stacks (); 1473 coro_destruct (aTHX_ coro);
812 1474
813 load_perl (&temp); /* this will get rid of defsv etc.. */ 1475 load_perl (aTHX_ &temp);
814 1476
815 coro->mainstack = 0; 1477 coro->slot = 0;
816 } 1478 }
817 1479
818 cctx_destroy (coro->cctx); 1480 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv);
819 SvREFCNT_dec (coro->args); 1482 SvREFCNT_dec (coro->args);
820 Safefree (coro); 1483 SvREFCNT_dec (CORO_THROW);
1484
1485 if (coro->next) coro->next->prev = coro->prev;
1486 if (coro->prev) coro->prev->next = coro->next;
1487 if (coro == coro_first) coro_first = coro->next;
1488
1489 return 1;
821} 1490}
822 1491
823static int 1492static int
824coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1493coro_state_free (pTHX_ SV *sv, MAGIC *mg)
825{ 1494{
826 struct coro *coro = (struct coro *)mg->mg_ptr; 1495 struct coro *coro = (struct coro *)mg->mg_ptr;
827 mg->mg_ptr = 0; 1496 mg->mg_ptr = 0;
828 1497
1498 coro->hv = 0;
1499
1500 if (--coro->refcnt < 0)
1501 {
829 coro_state_destroy (coro); 1502 coro_state_destroy (aTHX_ coro);
1503 Safefree (coro);
1504 }
830 1505
831 return 0; 1506 return 0;
832} 1507}
833 1508
834static int 1509static int
… …
841 return 0; 1516 return 0;
842} 1517}
843 1518
844static MGVTBL coro_state_vtbl = { 1519static MGVTBL coro_state_vtbl = {
845 0, 0, 0, 0, 1520 0, 0, 0, 0,
846 coro_state_clear, 1521 coro_state_free,
847 0, 1522 0,
848#ifdef MGf_DUP 1523#ifdef MGf_DUP
849 coro_state_dup, 1524 coro_state_dup,
850#else 1525#else
851# define MGf_DUP 0 1526# define MGf_DUP 0
852#endif 1527#endif
853}; 1528};
854 1529
855static struct coro *
856SvSTATE (SV *coro)
857{
858 HV *stash;
859 MAGIC *mg;
860
861 if (SvROK (coro))
862 coro = SvRV (coro);
863
864 stash = SvSTASH (coro);
865 if (stash != coro_stash && stash != coro_state_stash)
866 {
867 /* very slow, but rare, check */
868 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
869 croak ("Coro::State object required");
870 }
871
872 mg = SvMAGIC (coro);
873 assert (mg->mg_type == PERL_MAGIC_ext);
874 return (struct coro *)mg->mg_ptr;
875}
876
877static void 1530static void
878prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1531prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
879{ 1532{
880 ta->prev = SvSTATE (prev_sv); 1533 ta->prev = SvSTATE (prev_sv);
881 ta->next = SvSTATE (next_sv); 1534 ta->next = SvSTATE (next_sv);
1535 TRANSFER_CHECK (*ta);
882} 1536}
883 1537
884static void 1538static void
885api_transfer (SV *prev_sv, SV *next_sv) 1539api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
886{ 1540{
887 struct transfer_args ta; 1541 struct coro_transfer_args ta;
888 1542
889 prepare_transfer (&ta, prev_sv, next_sv); 1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
890 TRANSFER (ta); 1544 TRANSFER (ta, 1);
1545}
1546
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1568}
1569
1570/** Coro ********************************************************************/
1571
1572INLINE void
1573coro_enq (pTHX_ struct coro *coro)
1574{
1575 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1576}
1577
1578INLINE SV *
1579coro_deq (pTHX)
1580{
1581 int prio;
1582
1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1584 if (AvFILLp (coro_ready [prio]) >= 0)
1585 return av_shift (coro_ready [prio]);
1586
1587 return 0;
891} 1588}
892 1589
893static int 1590static int
894api_save (SV *coro_sv, int new_save)
895{
896 struct coro *coro = SvSTATE (coro_sv);
897 int old_save = coro->save;
898
899 if (new_save >= 0)
900 coro->save = new_save;
901
902 return old_save;
903}
904
905/** Coro ********************************************************************/
906
907#define PRIO_MAX 3
908#define PRIO_HIGH 1
909#define PRIO_NORMAL 0
910#define PRIO_LOW -1
911#define PRIO_IDLE -3
912#define PRIO_MIN -4
913
914/* for Coro.pm */
915static SV *coro_current;
916static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
917static int coro_nready;
918
919static void
920coro_enq (SV *coro_sv)
921{
922 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
923 coro_nready++;
924}
925
926static SV *
927coro_deq (int min_prio)
928{
929 int prio = PRIO_MAX - PRIO_MIN;
930
931 min_prio -= PRIO_MIN;
932 if (min_prio < 0)
933 min_prio = 0;
934
935 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
936 if (AvFILLp (coro_ready [prio]) >= 0)
937 {
938 coro_nready--;
939 return av_shift (coro_ready [prio]);
940 }
941
942 return 0;
943}
944
945static int
946api_ready (SV *coro_sv) 1591api_ready (pTHX_ SV *coro_sv)
947{ 1592{
948 struct coro *coro; 1593 struct coro *coro;
949 1594 SV *sv_hook;
950 if (SvROK (coro_sv)) 1595 void (*xs_hook)(void);
951 coro_sv = SvRV (coro_sv);
952 1596
953 coro = SvSTATE (coro_sv); 1597 coro = SvSTATE (coro_sv);
954 1598
955 if (coro->flags & CF_READY) 1599 if (coro->flags & CF_READY)
956 return 0; 1600 return 0;
957 1601
958#if 0 /* this is actually harmless */ 1602 coro->flags |= CF_READY;
1603
1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1606
1607 coro_enq (aTHX_ coro);
1608 ++coro_nready;
1609
1610 if (sv_hook)
1611 {
1612 dSP;
1613
1614 ENTER;
1615 SAVETMPS;
1616
1617 PUSHMARK (SP);
1618 PUTBACK;
1619 call_sv (sv_hook, G_VOID | G_DISCARD);
1620
1621 FREETMPS;
1622 LEAVE;
1623 }
1624
1625 if (xs_hook)
1626 xs_hook ();
1627
1628 return 1;
1629}
1630
1631static int
1632api_is_ready (pTHX_ SV *coro_sv)
1633{
1634 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1635}
1636
1637/* expects to own a reference to next->hv */
1638INLINE void
1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1640{
1641 SV *prev_sv = SvRV (coro_current);
1642
1643 ta->prev = SvSTATE_hv (prev_sv);
1644 ta->next = next;
1645
1646 TRANSFER_CHECK (*ta);
1647
1648 SvRV_set (coro_current, (SV *)next->hv);
1649
1650 free_coro_mortal (aTHX);
1651 coro_mortal = prev_sv;
1652}
1653
1654static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{
1657 for (;;)
1658 {
1659 SV *next_sv = coro_deq (aTHX);
1660
1661 if (expect_true (next_sv))
1662 {
1663 struct coro *next = SvSTATE_hv (next_sv);
1664
1665 /* cannot transfer to destroyed coros, skip and look for next */
1666 if (expect_false (next->flags & CF_DESTROYED))
1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1668 else
1669 {
1670 next->flags &= ~CF_READY;
1671 --coro_nready;
1672
1673 prepare_schedule_to (aTHX_ ta, next);
1674 break;
1675 }
1676 }
1677 else
1678 {
1679 /* nothing to schedule: call the idle handler */
1680 if (SvROK (sv_idle)
1681 && SvOBJECT (SvRV (sv_idle)))
1682 {
1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1684 api_ready (aTHX_ SvRV (sv_idle));
1685 --coro_nready;
1686 }
1687 else
1688 {
1689 dSP;
1690
1691 ENTER;
1692 SAVETMPS;
1693
1694 PUSHMARK (SP);
1695 PUTBACK;
1696 call_sv (sv_idle, G_VOID | G_DISCARD);
1697
1698 FREETMPS;
1699 LEAVE;
1700 }
1701 }
1702 }
1703}
1704
1705INLINE void
1706prepare_cede (pTHX_ struct coro_transfer_args *ta)
1707{
1708 api_ready (aTHX_ coro_current);
1709 prepare_schedule (aTHX_ ta);
1710}
1711
1712INLINE void
1713prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1714{
1715 SV *prev = SvRV (coro_current);
1716
1717 if (coro_nready)
1718 {
1719 prepare_schedule (aTHX_ ta);
1720 api_ready (aTHX_ prev);
1721 }
1722 else
1723 prepare_nop (aTHX_ ta);
1724}
1725
1726static void
1727api_schedule (pTHX)
1728{
1729 struct coro_transfer_args ta;
1730
1731 prepare_schedule (aTHX_ &ta);
1732 TRANSFER (ta, 1);
1733}
1734
1735static void
1736api_schedule_to (pTHX_ SV *coro_sv)
1737{
1738 struct coro_transfer_args ta;
1739 struct coro *next = SvSTATE (coro_sv);
1740
1741 SvREFCNT_inc_NN (coro_sv);
1742 prepare_schedule_to (aTHX_ &ta, next);
1743}
1744
1745static int
1746api_cede (pTHX)
1747{
1748 struct coro_transfer_args ta;
1749
1750 prepare_cede (aTHX_ &ta);
1751
1752 if (expect_true (ta.prev != ta.next))
1753 {
1754 TRANSFER (ta, 1);
1755 return 1;
1756 }
1757 else
1758 return 0;
1759}
1760
1761static int
1762api_cede_notself (pTHX)
1763{
1764 if (coro_nready)
1765 {
1766 struct coro_transfer_args ta;
1767
1768 prepare_cede_notself (aTHX_ &ta);
1769 TRANSFER (ta, 1);
1770 return 1;
1771 }
1772 else
1773 return 0;
1774}
1775
1776static void
1777api_trace (pTHX_ SV *coro_sv, int flags)
1778{
1779 struct coro *coro = SvSTATE (coro_sv);
1780
959 if (coro->flags & CF_RUNNING) 1781 if (coro->flags & CF_RUNNING)
960 croak ("Coro::ready called on currently running coroutine"); 1782 croak ("cannot enable tracing on a running coroutine, caught");
961#endif
962 1783
963 coro->flags |= CF_READY; 1784 if (flags & CC_TRACE)
1785 {
1786 if (!coro->cctx)
1787 coro->cctx = cctx_new_run ();
1788 else if (!(coro->cctx->flags & CC_TRACE))
1789 croak ("cannot enable tracing on coroutine with custom stack, caught");
964 1790
965 LOCK; 1791 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
966 coro_enq (SvREFCNT_inc (coro_sv)); 1792 }
967 UNLOCK; 1793 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1794 {
1795 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
968 1796
969 return 1; 1797 if (coro->flags & CF_RUNNING)
1798 PL_runops = RUNOPS_DEFAULT;
1799 else
1800 coro->slot->runops = RUNOPS_DEFAULT;
1801 }
970} 1802}
1803
1804static void
1805coro_call_on_destroy (pTHX_ struct coro *coro)
1806{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809
1810 if (on_destroyp)
1811 {
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813
1814 while (AvFILLp (on_destroy) >= 0)
1815 {
1816 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP);
1820
1821 if (statusp)
1822 {
1823 int i;
1824 AV *status = (AV *)SvRV (*statusp);
1825 EXTEND (SP, AvFILLp (status) + 1);
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 }
1830
1831 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1833 }
1834 }
1835}
1836
1837static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843
1844 av_extend (av, items - 1);
1845 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i]));
1847
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1849
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager);
1852
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat;
1855}
1856
1857/*****************************************************************************/
1858/* async pool handler */
971 1859
972static int 1860static int
973api_is_ready (SV *coro_sv) 1861slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
974{ 1862{
975 return !!SvSTATE (coro_sv)->flags & CF_READY; 1863 HV *hv = (HV *)SvRV (coro_current);
976} 1864 struct coro *coro = (struct coro *)frame->data;
977 1865
978static void 1866 if (!coro->invoke_cb)
979prepare_schedule (struct transfer_args *ta) 1867 return 1; /* loop till we have invoke */
980{ 1868 else
981 SV *prev, *next;
982
983 for (;;)
984 { 1869 {
985 LOCK; 1870 hv_store (hv, "desc", sizeof ("desc") - 1,
986 next = coro_deq (PRIO_MIN); 1871 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
987 UNLOCK;
988 1872
989 if (next) 1873 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
990 break;
991 1874
992 { 1875 {
993 dSP; 1876 dSP;
994 1877 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
995 ENTER;
996 SAVETMPS;
997
998 PUSHMARK (SP);
999 PUTBACK; 1878 PUTBACK;
1000 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1001
1002 FREETMPS;
1003 LEAVE;
1004 } 1879 }
1880
1881 SvREFCNT_dec (GvAV (PL_defgv));
1882 GvAV (PL_defgv) = coro->invoke_av;
1883 coro->invoke_av = 0;
1884
1885 return 0;
1886 }
1887}
1888
1889static void
1890slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 HV *hv = (HV *)SvRV (coro_current);
1893 struct coro *coro = SvSTATE_hv ((SV *)hv);
1894
1895 if (expect_true (coro->saved_deffh))
1005 } 1896 {
1897 /* subsequent iteration */
1898 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1899 coro->saved_deffh = 0;
1006 1900
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1905 coro->invoke_av = newAV ();
1906
1907 frame->prepare = prepare_nop;
1908 }
1909 else
1910 {
1911 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1913
1914 coro->prio = 0;
1915
1916 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1917 api_trace (aTHX_ coro_current, 0);
1918
1919 frame->prepare = prepare_schedule;
1920 av_push (av_async_pool, SvREFCNT_inc (hv));
1921 }
1922 }
1923 else
1924 {
1925 /* first iteration, simply fall through */
1926 frame->prepare = prepare_nop;
1927 }
1928
1929 frame->check = slf_check_pool_handler;
1930 frame->data = (void *)coro;
1931}
1932
1933/*****************************************************************************/
1934/* rouse callback */
1935
1936#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1937
1938static void
1939coro_rouse_callback (pTHX_ CV *cv)
1940{
1941 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG;
1943
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 {
1946 /* first call, set args */
1947 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949
1950 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953
1954 /* better take a full copy of the arguments */
1955 while (items--)
1956 av_store (av, items, newSVsv (ST (items)));
1957 }
1958
1959 XSRETURN_EMPTY;
1960}
1961
1962static int
1963slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1964{
1965 SV *data = (SV *)frame->data;
1966
1967 if (CORO_THROW)
1968 return 0;
1969
1970 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1971 return 1;
1972
1973 /* now push all results on the stack */
1974 {
1975 dSP;
1976 AV *av = (AV *)SvRV (data);
1977 int i;
1978
1979 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982
1983 /* we have stolen the elements, so ste length to zero and free */
1984 AvFILLp (av) = -1;
1985 av_undef (av);
1986
1987 PUTBACK;
1988 }
1989
1990 return 0;
1991}
1992
1993static void
1994slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1995{
1996 SV *cb;
1997
1998 if (items)
1999 cb = arg [0];
2000 else
2001 {
2002 struct coro *coro = SvSTATE_current;
2003
2004 if (!coro->rouse_cb)
2005 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2006
2007 cb = sv_2mortal (coro->rouse_cb);
2008 coro->rouse_cb = 0;
2009 }
2010
2011 if (!SvROK (cb)
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,");
2015
2016 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG;
2019
2020 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait;
2023 }
2024}
2025
2026static SV *
2027coro_new_rouse_cb (pTHX)
2028{
1007 prev = SvRV (coro_current); 2029 HV *hv = (HV *)SvRV (coro_current);
1008 SvRV_set (coro_current, next); 2030 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1009 2033
1010 /* free this only after the transfer */ 2034 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1011 LOCK; 2035 SvREFCNT_dec (data); /* magicext increases the refcount */
1012 free_coro_mortal ();
1013 UNLOCK;
1014 coro_mortal = prev;
1015 2036
1016 assert (!SvROK(prev));//D 2037 SvREFCNT_dec (coro->rouse_cb);
1017 assert (!SvROK(next));//D 2038 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1018 2039
1019 ta->prev = SvSTATE (prev); 2040 return cb;
1020 ta->next = SvSTATE (next);
1021
1022 assert (ta->next->flags & CF_READY);
1023 ta->next->flags &= ~CF_READY;
1024} 2041}
1025 2042
2043/*****************************************************************************/
2044/* schedule-like-function opcode (SLF) */
2045
2046static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2047static const CV *slf_cv;
2048static SV **slf_argv;
2049static int slf_argc, slf_arga; /* count, allocated */
2050static I32 slf_ax; /* top of stack, for restore */
2051
2052/* this restores the stack in the case we patched the entersub, to */
2053/* recreate the stack frame as perl will on following calls */
2054/* since entersub cleared the stack */
2055static OP *
2056pp_restore (pTHX)
2057{
2058 int i;
2059 SV **SP = PL_stack_base + slf_ax;
2060
2061 PUSHMARK (SP);
2062
2063 EXTEND (SP, slf_argc + 1);
2064
2065 for (i = 0; i < slf_argc; ++i)
2066 PUSHs (sv_2mortal (slf_argv [i]));
2067
2068 PUSHs ((SV *)CvGV (slf_cv));
2069
2070 RETURNOP (slf_restore.op_first);
2071}
2072
1026static void 2073static void
2074slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2075{
2076 SV **arg = (SV **)slf_frame.data;
2077
2078 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2079}
2080
2081static void
2082slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2083{
2084 if (items != 2)
2085 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2086
2087 frame->prepare = slf_prepare_transfer;
2088 frame->check = slf_check_nop;
2089 frame->data = (void *)arg; /* let's hope it will stay valid */
2090}
2091
2092static void
2093slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 frame->prepare = prepare_schedule;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
1027prepare_cede (struct transfer_args *ta) 2100slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
1028{ 2101{
2102 struct coro *next = (struct coro *)slf_frame.data;
2103
2104 SvREFCNT_inc_NN (next->hv);
2105 prepare_schedule_to (aTHX_ ta, next);
2106}
2107
2108static void
2109slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2110{
2111 if (!items)
2112 croak ("Coro::schedule_to expects a coroutine argument, caught");
2113
2114 frame->data = (void *)SvSTATE (arg [0]);
2115 frame->prepare = slf_prepare_schedule_to;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2121{
1029 api_ready (coro_current); 2122 api_ready (aTHX_ SvRV (coro_current));
1030 2123
1031 prepare_schedule (ta); 2124 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1032} 2125}
1033 2126
1034static void 2127static void
1035api_schedule (void) 2128slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1036{ 2129{
2130 frame->prepare = prepare_cede;
2131 frame->check = slf_check_nop;
2132}
2133
2134static void
2135slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2136{
2137 frame->prepare = prepare_cede_notself;
2138 frame->check = slf_check_nop;
2139}
2140
2141/*
2142 * these not obviously related functions are all rolled into one
2143 * function to increase chances that they all will call transfer with the same
2144 * stack offset
2145 * SLF stands for "schedule-like-function".
2146 */
2147static OP *
2148pp_slf (pTHX)
2149{
2150 I32 checkmark; /* mark SP to see how many elements check has pushed */
2151
2152 /* set up the slf frame, unless it has already been set-up */
2153 /* the latter happens when a new coro has been started */
2154 /* or when a new cctx was attached to an existing coroutine */
2155 if (expect_true (!slf_frame.prepare))
2156 {
2157 /* first iteration */
2158 dSP;
2159 SV **arg = PL_stack_base + TOPMARK + 1;
2160 int items = SP - arg; /* args without function object */
2161 SV *gv = *sp;
2162
2163 /* do a quick consistency check on the "function" object, and if it isn't */
2164 /* for us, divert to the real entersub */
2165 if (SvTYPE (gv) != SVt_PVGV
2166 || !GvCV (gv)
2167 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2168 return PL_ppaddr[OP_ENTERSUB](aTHX);
2169
2170 if (!(PL_op->op_flags & OPf_STACKED))
2171 {
2172 /* ampersand-form of call, use @_ instead of stack */
2173 AV *av = GvAV (PL_defgv);
2174 arg = AvARRAY (av);
2175 items = AvFILLp (av) + 1;
2176 }
2177
2178 /* now call the init function, which needs to set up slf_frame */
2179 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2180 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2181
2182 /* pop args */
2183 SP = PL_stack_base + POPMARK;
2184
2185 PUTBACK;
2186 }
2187
2188 /* now that we have a slf_frame, interpret it! */
2189 /* we use a callback system not to make the code needlessly */
2190 /* complicated, but so we can run multiple perl coros from one cctx */
2191
2192 do
2193 {
1037 struct transfer_args ta; 2194 struct coro_transfer_args ta;
1038 2195
1039 prepare_schedule (&ta); 2196 slf_frame.prepare (aTHX_ &ta);
1040 TRANSFER (ta); 2197 TRANSFER (ta, 0);
1041}
1042 2198
2199 checkmark = PL_stack_sp - PL_stack_base;
2200 }
2201 while (slf_frame.check (aTHX_ &slf_frame));
2202
2203 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2204
2205 /* exception handling */
2206 if (expect_false (CORO_THROW))
2207 {
2208 SV *exception = sv_2mortal (CORO_THROW);
2209
2210 CORO_THROW = 0;
2211 sv_setsv (ERRSV, exception);
2212 croak (0);
2213 }
2214
2215 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR)
2218 {
2219 dSP;
2220 SV **bot = PL_stack_base + checkmark;
2221
2222 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */
2225 bot [1] = *sp;
2226
2227 SP = bot + 1;
2228
2229 PUTBACK;
2230 }
2231
2232 return NORMAL;
2233}
2234
2235static void
2236api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2237{
2238 int i;
2239 SV **arg = PL_stack_base + ax;
2240 int items = PL_stack_sp - arg + 1;
2241
2242 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2243
2244 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2245 && PL_op->op_ppaddr != pp_slf)
2246 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2247
2248 CvFLAGS (cv) |= CVf_SLF;
2249 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2250 slf_cv = cv;
2251
2252 /* we patch the op, and then re-run the whole call */
2253 /* we have to put the same argument on the stack for this to work */
2254 /* and this will be done by pp_restore */
2255 slf_restore.op_next = (OP *)&slf_restore;
2256 slf_restore.op_type = OP_CUSTOM;
2257 slf_restore.op_ppaddr = pp_restore;
2258 slf_restore.op_first = PL_op;
2259
2260 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2261
2262 if (PL_op->op_flags & OPf_STACKED)
2263 {
2264 if (items > slf_arga)
2265 {
2266 slf_arga = items;
2267 free (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *));
2269 }
2270
2271 slf_argc = items;
2272
2273 for (i = 0; i < items; ++i)
2274 slf_argv [i] = SvREFCNT_inc (arg [i]);
2275 }
2276 else
2277 slf_argc = 0;
2278
2279 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281
2282 PL_op = (OP *)&slf_restore;
2283}
2284
2285/*****************************************************************************/
2286/* PerlIO::cede */
2287
2288typedef struct
2289{
2290 PerlIOBuf base;
2291 NV next, every;
2292} PerlIOCede;
2293
2294static IV
2295PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2296{
2297 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2298
2299 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2300 self->next = nvtime () + self->every;
2301
2302 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2303}
2304
2305static SV *
2306PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2307{
2308 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2309
2310 return newSVnv (self->every);
2311}
2312
2313static IV
2314PerlIOCede_flush (pTHX_ PerlIO *f)
2315{
2316 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2317 double now = nvtime ();
2318
2319 if (now >= self->next)
2320 {
2321 api_cede (aTHX);
2322 self->next = now + self->every;
2323 }
2324
2325 return PerlIOBuf_flush (aTHX_ f);
2326}
2327
2328static PerlIO_funcs PerlIO_cede =
2329{
2330 sizeof(PerlIO_funcs),
2331 "cede",
2332 sizeof(PerlIOCede),
2333 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2334 PerlIOCede_pushed,
2335 PerlIOBuf_popped,
2336 PerlIOBuf_open,
2337 PerlIOBase_binmode,
2338 PerlIOCede_getarg,
2339 PerlIOBase_fileno,
2340 PerlIOBuf_dup,
2341 PerlIOBuf_read,
2342 PerlIOBuf_unread,
2343 PerlIOBuf_write,
2344 PerlIOBuf_seek,
2345 PerlIOBuf_tell,
2346 PerlIOBuf_close,
2347 PerlIOCede_flush,
2348 PerlIOBuf_fill,
2349 PerlIOBase_eof,
2350 PerlIOBase_error,
2351 PerlIOBase_clearerr,
2352 PerlIOBase_setlinebuf,
2353 PerlIOBuf_get_base,
2354 PerlIOBuf_bufsiz,
2355 PerlIOBuf_get_ptr,
2356 PerlIOBuf_get_cnt,
2357 PerlIOBuf_set_ptrcnt,
2358};
2359
2360/*****************************************************************************/
2361/* Coro::Semaphore & Coro::Signal */
2362
2363static SV *
2364coro_waitarray_new (pTHX_ int count)
2365{
2366 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2367 AV *av = newAV ();
2368 SV **ary;
2369
2370 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary;
2373 /*AvARRAY (av) = ary;*/
2374 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2375 AvMAX (av) = 1;
2376 AvFILLp (av) = 0;
2377 ary [0] = newSViv (count);
2378
2379 return newRV_noinc ((SV *)av);
2380}
2381
2382/* semaphore */
2383
2384static void
2385coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2386{
2387 SV *count_sv = AvARRAY (av)[0];
2388 IV count = SvIVX (count_sv);
2389
2390 count += adjust;
2391 SvIVX (count_sv) = count;
2392
2393 /* now wake up as many waiters as are expected to lock */
2394 while (count > 0 && AvFILLp (av) > 0)
2395 {
2396 SV *cb;
2397
2398 /* swap first two elements so we can shift a waiter */
2399 AvARRAY (av)[0] = AvARRAY (av)[1];
2400 AvARRAY (av)[1] = count_sv;
2401 cb = av_shift (av);
2402
2403 if (SvOBJECT (cb))
2404 {
2405 api_ready (aTHX_ cb);
2406 --count;
2407 }
2408 else if (SvTYPE (cb) == SVt_PVCV)
2409 {
2410 dSP;
2411 PUSHMARK (SP);
2412 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2413 PUTBACK;
2414 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2415 }
2416
2417 SvREFCNT_dec (cb);
2418 }
2419}
2420
2421static void
2422coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2423{
2424 /* call $sem->adjust (0) to possibly wake up some other waiters */
2425 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2426}
2427
1043static void 2428static int
1044api_cede (void) 2429slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1045{ 2430{
1046 struct transfer_args ta; 2431 AV *av = (AV *)frame->data;
2432 SV *count_sv = AvARRAY (av)[0];
1047 2433
1048 prepare_cede (&ta); 2434 /* if we are about to throw, don't actually acquire the lock, just throw */
1049 TRANSFER (ta); 2435 if (CORO_THROW)
1050} 2436 return 0;
2437 else if (SvIVX (count_sv) > 0)
2438 {
2439 SvSTATE_current->on_destroy = 0;
1051 2440
2441 if (acquire)
2442 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2443 else
2444 coro_semaphore_adjust (aTHX_ av, 0);
2445
2446 return 0;
2447 }
2448 else
2449 {
2450 int i;
2451 /* if we were woken up but can't down, we look through the whole */
2452 /* waiters list and only add us if we aren't in there already */
2453 /* this avoids some degenerate memory usage cases */
2454
2455 for (i = 1; i <= AvFILLp (av); ++i)
2456 if (AvARRAY (av)[i] == SvRV (coro_current))
2457 return 1;
2458
2459 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2460 return 1;
2461 }
2462}
2463
2464static int
2465slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2466{
2467 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2468}
2469
2470static int
2471slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2474}
2475
2476static void
2477slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2478{
2479 AV *av = (AV *)SvRV (arg [0]);
2480
2481 if (SvIVX (AvARRAY (av)[0]) > 0)
2482 {
2483 frame->data = (void *)av;
2484 frame->prepare = prepare_nop;
2485 }
2486 else
2487 {
2488 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2489
2490 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2491 frame->prepare = prepare_schedule;
2492
2493 /* to avoid race conditions when a woken-up coro gets terminated */
2494 /* we arrange for a temporary on_destroy that calls adjust (0) */
2495 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2496 }
2497}
2498
2499static void
2500slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2501{
2502 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2503 frame->check = slf_check_semaphore_down;
2504}
2505
2506static void
2507slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 if (items >= 2)
2510 {
2511 /* callback form */
2512 AV *av = (AV *)SvRV (arg [0]);
2513 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2514
2515 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2516
2517 if (SvIVX (AvARRAY (av)[0]) > 0)
2518 coro_semaphore_adjust (aTHX_ av, 0);
2519
2520 frame->prepare = prepare_nop;
2521 frame->check = slf_check_nop;
2522 }
2523 else
2524 {
2525 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2526 frame->check = slf_check_semaphore_wait;
2527 }
2528}
2529
2530/* signal */
2531
2532static void
2533coro_signal_wake (pTHX_ AV *av, int count)
2534{
2535 SvIVX (AvARRAY (av)[0]) = 0;
2536
2537 /* now signal count waiters */
2538 while (count > 0 && AvFILLp (av) > 0)
2539 {
2540 SV *cb;
2541
2542 /* swap first two elements so we can shift a waiter */
2543 cb = AvARRAY (av)[0];
2544 AvARRAY (av)[0] = AvARRAY (av)[1];
2545 AvARRAY (av)[1] = cb;
2546
2547 cb = av_shift (av);
2548
2549 api_ready (aTHX_ cb);
2550 sv_setiv (cb, 0); /* signal waiter */
2551 SvREFCNT_dec (cb);
2552
2553 --count;
2554 }
2555}
2556
2557static int
2558slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2559{
2560 /* if we are about to throw, also stop waiting */
2561 return SvROK ((SV *)frame->data) && !CORO_THROW;
2562}
2563
2564static void
2565slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2566{
2567 AV *av = (AV *)SvRV (arg [0]);
2568
2569 if (SvIVX (AvARRAY (av)[0]))
2570 {
2571 SvIVX (AvARRAY (av)[0]) = 0;
2572 frame->prepare = prepare_nop;
2573 frame->check = slf_check_nop;
2574 }
2575 else
2576 {
2577 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2578
2579 av_push (av, waiter);
2580
2581 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2582 frame->prepare = prepare_schedule;
2583 frame->check = slf_check_signal_wait;
2584 }
2585}
2586
2587/*****************************************************************************/
2588/* Coro::AIO */
2589
2590#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2591
2592/* helper storage struct */
2593struct io_state
2594{
2595 int errorno;
2596 I32 laststype; /* U16 in 5.10.0 */
2597 int laststatval;
2598 Stat_t statcache;
2599};
2600
2601static void
2602coro_aio_callback (pTHX_ CV *cv)
2603{
2604 dXSARGS;
2605 AV *state = (AV *)GENSUB_ARG;
2606 SV *coro = av_pop (state);
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608
2609 av_extend (state, items - 1);
2610
2611 sv_upgrade (data_sv, SVt_PV);
2612 SvCUR_set (data_sv, sizeof (struct io_state));
2613 SvPOK_only (data_sv);
2614
2615 {
2616 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2617
2618 data->errorno = errno;
2619 data->laststype = PL_laststype;
2620 data->laststatval = PL_laststatval;
2621 data->statcache = PL_statcache;
2622 }
2623
2624 /* now build the result vector out of all the parameters and the data_sv */
2625 {
2626 int i;
2627
2628 for (i = 0; i < items; ++i)
2629 av_push (state, SvREFCNT_inc_NN (ST (i)));
2630 }
2631
2632 av_push (state, data_sv);
2633
2634 api_ready (aTHX_ coro);
2635 SvREFCNT_dec (coro);
2636 SvREFCNT_dec ((AV *)state);
2637}
2638
2639static int
2640slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2641{
2642 AV *state = (AV *)frame->data;
2643
2644 /* if we are about to throw, return early */
2645 /* this does not cancel the aio request, but at least */
2646 /* it quickly returns */
2647 if (CORO_THROW)
2648 return 0;
2649
2650 /* one element that is an RV? repeat! */
2651 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2652 return 1;
2653
2654 /* restore status */
2655 {
2656 SV *data_sv = av_pop (state);
2657 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2658
2659 errno = data->errorno;
2660 PL_laststype = data->laststype;
2661 PL_laststatval = data->laststatval;
2662 PL_statcache = data->statcache;
2663
2664 SvREFCNT_dec (data_sv);
2665 }
2666
2667 /* push result values */
2668 {
2669 dSP;
2670 int i;
2671
2672 EXTEND (SP, AvFILLp (state) + 1);
2673 for (i = 0; i <= AvFILLp (state); ++i)
2674 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2675
2676 PUTBACK;
2677 }
2678
2679 return 0;
2680}
2681
2682static void
2683slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2684{
2685 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2686 SV *coro_hv = SvRV (coro_current);
2687 struct coro *coro = SvSTATE_hv (coro_hv);
2688
2689 /* put our coroutine id on the state arg */
2690 av_push (state, SvREFCNT_inc_NN (coro_hv));
2691
2692 /* first see whether we have a non-zero priority and set it as AIO prio */
2693 if (coro->prio)
2694 {
2695 dSP;
2696
2697 static SV *prio_cv;
2698 static SV *prio_sv;
2699
2700 if (expect_false (!prio_cv))
2701 {
2702 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2703 prio_sv = newSViv (0);
2704 }
2705
2706 PUSHMARK (SP);
2707 sv_setiv (prio_sv, coro->prio);
2708 XPUSHs (prio_sv);
2709
2710 PUTBACK;
2711 call_sv (prio_cv, G_VOID | G_DISCARD);
2712 }
2713
2714 /* now call the original request */
2715 {
2716 dSP;
2717 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2718 int i;
2719
2720 PUSHMARK (SP);
2721
2722 /* first push all args to the stack */
2723 EXTEND (SP, items + 1);
2724
2725 for (i = 0; i < items; ++i)
2726 PUSHs (arg [i]);
2727
2728 /* now push the callback closure */
2729 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2730
2731 /* now call the AIO function - we assume our request is uncancelable */
2732 PUTBACK;
2733 call_sv ((SV *)req, G_VOID | G_DISCARD);
2734 }
2735
2736 /* now that the requets is going, we loop toll we have a result */
2737 frame->data = (void *)state;
2738 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_aio_req;
2740}
2741
2742static void
2743coro_aio_req_xs (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746
2747 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2748
2749 XSRETURN_EMPTY;
2750}
2751
2752/*****************************************************************************/
2753
2754#if CORO_CLONE
2755# include "clone.c"
2756#endif
2757
1052MODULE = Coro::State PACKAGE = Coro::State 2758MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1053 2759
1054PROTOTYPES: DISABLE 2760PROTOTYPES: DISABLE
1055 2761
1056BOOT: 2762BOOT:
1057{ 2763{
1058#ifdef USE_ITHREADS 2764#ifdef USE_ITHREADS
1059 MUTEX_INIT (&coro_mutex); 2765# if CORO_PTHREAD
2766 coro_thx = PERL_GET_CONTEXT;
2767# endif
1060#endif 2768#endif
1061 BOOT_PAGESIZE; 2769 BOOT_PAGESIZE;
1062 2770
2771 cctx_current = cctx_new_empty ();
2772
2773 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2774 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2775
2776 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2777 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2778 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2779
2780 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2781 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2782 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2783
1063 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2784 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1064 2785
2786 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2787 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1065 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2788 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1066 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1067 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1068 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1069 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2789 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1070 2790
1071 main_mainstack = PL_mainstack; 2791 main_mainstack = PL_mainstack;
2792 main_top_env = PL_top_env;
1072 2793
2794 while (main_top_env->je_prev)
2795 main_top_env = main_top_env->je_prev;
2796
2797 {
2798 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2799
2800 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2801 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2802
2803 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2804 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2805 }
2806
1073 coroapi.ver = CORO_API_VERSION; 2807 coroapi.ver = CORO_API_VERSION;
2808 coroapi.rev = CORO_API_REVISION;
2809
1074 coroapi.transfer = api_transfer; 2810 coroapi.transfer = api_transfer;
2811
2812 coroapi.sv_state = SvSTATE_;
2813 coroapi.execute_slf = api_execute_slf;
2814 coroapi.prepare_nop = prepare_nop;
2815 coroapi.prepare_schedule = prepare_schedule;
2816 coroapi.prepare_cede = prepare_cede;
2817 coroapi.prepare_cede_notself = prepare_cede_notself;
2818
2819 {
2820 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2821
2822 if (!svp) croak ("Time::HiRes is required");
2823 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2824
2825 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2826 }
1075 2827
1076 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2828 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1077} 2829}
1078 2830
1079SV * 2831SV *
1080new (char *klass, ...) 2832new (char *klass, ...)
2833 ALIAS:
2834 Coro::new = 1
1081 CODE: 2835 CODE:
1082{ 2836{
1083 struct coro *coro; 2837 struct coro *coro;
2838 MAGIC *mg;
1084 HV *hv; 2839 HV *hv;
2840 CV *cb;
1085 int i; 2841 int i;
1086 2842
2843 if (items > 1)
2844 {
2845 cb = coro_sv_2cv (aTHX_ ST (1));
2846
2847 if (!ix)
2848 {
2849 if (CvISXSUB (cb))
2850 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2851
2852 if (!CvROOT (cb))
2853 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2854 }
2855 }
2856
1087 Newz (0, coro, 1, struct coro); 2857 Newz (0, coro, 1, struct coro);
1088 coro->args = newAV (); 2858 coro->args = newAV ();
1089 coro->save = CORO_SAVE_ALL;
1090 coro->flags = CF_NEW; 2859 coro->flags = CF_NEW;
1091 2860
2861 if (coro_first) coro_first->prev = coro;
2862 coro->next = coro_first;
2863 coro_first = coro;
2864
1092 hv = newHV (); 2865 coro->hv = hv = newHV ();
1093 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2866 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2867 mg->mg_flags |= MGf_DUP;
1094 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2868 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1095 2869
2870 if (items > 1)
2871 {
2872 av_extend (coro->args, items - 1 + ix - 1);
2873
2874 if (ix)
2875 {
2876 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2877 cb = cv_coro_run;
2878 }
2879
2880 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2881
1096 for (i = 1; i < items; i++) 2882 for (i = 2; i < items; i++)
1097 av_push (coro->args, newSVsv (ST (i))); 2883 av_push (coro->args, newSVsv (ST (i)));
2884 }
1098} 2885}
1099 OUTPUT: 2886 OUTPUT:
1100 RETVAL 2887 RETVAL
1101 2888
1102int 2889void
1103save (SV *coro, int new_save = -1) 2890transfer (...)
2891 PROTOTYPE: $$
1104 CODE: 2892 CODE:
1105 RETVAL = api_save (coro, new_save); 2893 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2894
2895bool
2896_destroy (SV *coro_sv)
2897 CODE:
2898 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1106 OUTPUT: 2899 OUTPUT:
1107 RETVAL 2900 RETVAL
1108 2901
1109void 2902void
1110_set_stacklevel (...)
1111 ALIAS:
1112 Coro::State::transfer = 1
1113 Coro::schedule = 2
1114 Coro::cede = 3
1115 CODE:
1116{
1117 struct transfer_args ta;
1118
1119 switch (ix)
1120 {
1121 case 0:
1122 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1123 ta.next = 0;
1124 break;
1125
1126 case 1:
1127 if (items != 2)
1128 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1129
1130 prepare_transfer (&ta, ST (0), ST (1));
1131 break;
1132
1133 case 2:
1134 prepare_schedule (&ta);
1135 break;
1136
1137 case 3:
1138 prepare_cede (&ta);
1139 break;
1140 }
1141
1142 TRANSFER (ta);
1143}
1144
1145void
1146_clone_state_from (SV *dst, SV *src)
1147 CODE:
1148{
1149 struct coro *coro_src = SvSTATE (src);
1150
1151 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1152
1153 ++coro_src->refcnt;
1154 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1155}
1156
1157void
1158_exit (code) 2903_exit (int code)
1159 int code
1160 PROTOTYPE: $ 2904 PROTOTYPE: $
1161 CODE: 2905 CODE:
1162 _exit (code); 2906 _exit (code);
1163 2907
2908SV *
2909clone (Coro::State coro)
2910 CODE:
2911{
2912#if CORO_CLONE
2913 struct coro *ncoro = coro_clone (coro);
2914 MAGIC *mg;
2915 /* TODO: too much duplication */
2916 ncoro->hv = newHV ();
2917 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2918 mg->mg_flags |= MGf_DUP;
2919 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2920#else
2921 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2922#endif
2923}
2924 OUTPUT:
2925 RETVAL
2926
2927int
2928cctx_stacksize (int new_stacksize = 0)
2929 PROTOTYPE: ;$
2930 CODE:
2931 RETVAL = cctx_stacksize;
2932 if (new_stacksize)
2933 {
2934 cctx_stacksize = new_stacksize;
2935 ++cctx_gen;
2936 }
2937 OUTPUT:
2938 RETVAL
2939
2940int
2941cctx_max_idle (int max_idle = 0)
2942 PROTOTYPE: ;$
2943 CODE:
2944 RETVAL = cctx_max_idle;
2945 if (max_idle > 1)
2946 cctx_max_idle = max_idle;
2947 OUTPUT:
2948 RETVAL
2949
1164int 2950int
1165cctx_count () 2951cctx_count ()
2952 PROTOTYPE:
1166 CODE: 2953 CODE:
1167 RETVAL = cctx_count; 2954 RETVAL = cctx_count;
1168 OUTPUT: 2955 OUTPUT:
1169 RETVAL 2956 RETVAL
1170 2957
1171int 2958int
1172cctx_idle () 2959cctx_idle ()
2960 PROTOTYPE:
1173 CODE: 2961 CODE:
1174 RETVAL = cctx_idle; 2962 RETVAL = cctx_idle;
1175 OUTPUT: 2963 OUTPUT:
1176 RETVAL 2964 RETVAL
1177 2965
2966void
2967list ()
2968 PROTOTYPE:
2969 PPCODE:
2970{
2971 struct coro *coro;
2972 for (coro = coro_first; coro; coro = coro->next)
2973 if (coro->hv)
2974 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2975}
2976
2977void
2978call (Coro::State coro, SV *coderef)
2979 ALIAS:
2980 eval = 1
2981 CODE:
2982{
2983 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2984 {
2985 struct coro temp;
2986
2987 if (!(coro->flags & CF_RUNNING))
2988 {
2989 PUTBACK;
2990 save_perl (aTHX_ &temp);
2991 load_perl (aTHX_ coro);
2992 }
2993
2994 {
2995 dSP;
2996 ENTER;
2997 SAVETMPS;
2998 PUTBACK;
2999 PUSHSTACK;
3000 PUSHMARK (SP);
3001
3002 if (ix)
3003 eval_sv (coderef, 0);
3004 else
3005 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3006
3007 POPSTACK;
3008 SPAGAIN;
3009 FREETMPS;
3010 LEAVE;
3011 PUTBACK;
3012 }
3013
3014 if (!(coro->flags & CF_RUNNING))
3015 {
3016 save_perl (aTHX_ coro);
3017 load_perl (aTHX_ &temp);
3018 SPAGAIN;
3019 }
3020 }
3021}
3022
3023SV *
3024is_ready (Coro::State coro)
3025 PROTOTYPE: $
3026 ALIAS:
3027 is_ready = CF_READY
3028 is_running = CF_RUNNING
3029 is_new = CF_NEW
3030 is_destroyed = CF_DESTROYED
3031 CODE:
3032 RETVAL = boolSV (coro->flags & ix);
3033 OUTPUT:
3034 RETVAL
3035
3036void
3037throw (Coro::State self, SV *throw = &PL_sv_undef)
3038 PROTOTYPE: $;$
3039 CODE:
3040{
3041 struct coro *current = SvSTATE_current;
3042 SV **throwp = self == current ? &CORO_THROW : &self->except;
3043 SvREFCNT_dec (*throwp);
3044 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3045}
3046
3047void
3048api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3049 PROTOTYPE: $;$
3050 C_ARGS: aTHX_ coro, flags
3051
3052SV *
3053has_cctx (Coro::State coro)
3054 PROTOTYPE: $
3055 CODE:
3056 /* maybe manage the running flag differently */
3057 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
3058 OUTPUT:
3059 RETVAL
3060
3061int
3062is_traced (Coro::State coro)
3063 PROTOTYPE: $
3064 CODE:
3065 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
3066 OUTPUT:
3067 RETVAL
3068
3069UV
3070rss (Coro::State coro)
3071 PROTOTYPE: $
3072 ALIAS:
3073 usecount = 1
3074 CODE:
3075 switch (ix)
3076 {
3077 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3078 case 1: RETVAL = coro->usecount; break;
3079 }
3080 OUTPUT:
3081 RETVAL
3082
3083void
3084force_cctx ()
3085 PROTOTYPE:
3086 CODE:
3087 cctx_current->idle_sp = 0;
3088
3089void
3090swap_defsv (Coro::State self)
3091 PROTOTYPE: $
3092 ALIAS:
3093 swap_defav = 1
3094 CODE:
3095 if (!self->slot)
3096 croak ("cannot swap state with coroutine that has no saved state,");
3097 else
3098 {
3099 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3100 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3101
3102 SV *tmp = *src; *src = *dst; *dst = tmp;
3103 }
3104
3105
1178MODULE = Coro::State PACKAGE = Coro 3106MODULE = Coro::State PACKAGE = Coro
1179 3107
1180BOOT: 3108BOOT:
1181{ 3109{
1182 int i; 3110 int i;
1183 3111
3112 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3113 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3114 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3115 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3116 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3117 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3118 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3119 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3120 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3121
3122 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3123 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3124 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3125 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
3126
1184 coro_stash = gv_stashpv ("Coro", TRUE); 3127 coro_stash = gv_stashpv ("Coro", TRUE);
1185 3128
1186 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3129 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1187 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3130 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1188 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3131 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1189 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3132 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1190 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3133 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1191 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3134 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1192 3135
1193 coro_current = get_sv ("Coro::current", FALSE);
1194 SvREADONLY_on (coro_current);
1195
1196 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3136 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1197 coro_ready[i] = newAV (); 3137 coro_ready[i] = newAV ();
1198 3138
1199 { 3139 {
1200 SV *sv = perl_get_sv("Coro::API", 1); 3140 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1201 3141
1202 coroapi.schedule = api_schedule; 3142 coroapi.schedule = api_schedule;
1203 coroapi.save = api_save; 3143 coroapi.schedule_to = api_schedule_to;
1204 coroapi.cede = api_cede; 3144 coroapi.cede = api_cede;
3145 coroapi.cede_notself = api_cede_notself;
1205 coroapi.ready = api_ready; 3146 coroapi.ready = api_ready;
1206 coroapi.is_ready = api_is_ready; 3147 coroapi.is_ready = api_is_ready;
1207 coroapi.nready = &coro_nready; 3148 coroapi.nready = coro_nready;
1208 coroapi.current = coro_current; 3149 coroapi.current = coro_current;
1209 3150
1210 GCoroAPI = &coroapi; 3151 /*GCoroAPI = &coroapi;*/
1211 sv_setiv (sv, (IV)&coroapi); 3152 sv_setiv (sv, (IV)&coroapi);
1212 SvREADONLY_on (sv); 3153 SvREADONLY_on (sv);
1213 } 3154 }
1214} 3155}
3156
3157void
3158terminate (...)
3159 CODE:
3160 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3161
3162void
3163schedule (...)
3164 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3166
3167void
3168schedule_to (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3171
3172void
3173cede_to (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3176
3177void
3178cede (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_cede);
3181
3182void
3183cede_notself (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3186
3187void
3188_cancel (Coro::State self)
3189 CODE:
3190 coro_state_destroy (aTHX_ self);
3191 coro_call_on_destroy (aTHX_ self);
1215 3192
1216void 3193void
1217_set_current (SV *current) 3194_set_current (SV *current)
1218 PROTOTYPE: $ 3195 PROTOTYPE: $
1219 CODE: 3196 CODE:
1220 SvREFCNT_dec (SvRV (coro_current)); 3197 SvREFCNT_dec (SvRV (coro_current));
1221 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3198 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3199
3200void
3201_set_readyhook (SV *hook)
3202 PROTOTYPE: $
3203 CODE:
3204 SvREFCNT_dec (coro_readyhook);
3205 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1222 3206
1223int 3207int
1224prio (Coro::State coro, int newprio = 0) 3208prio (Coro::State coro, int newprio = 0)
3209 PROTOTYPE: $;$
1225 ALIAS: 3210 ALIAS:
1226 nice = 1 3211 nice = 1
1227 CODE: 3212 CODE:
1228{ 3213{
1229 RETVAL = coro->prio; 3214 RETVAL = coro->prio;
1230 3215
1231 if (items > 1) 3216 if (items > 1)
1232 { 3217 {
1233 if (ix) 3218 if (ix)
1234 newprio += coro->prio; 3219 newprio = coro->prio - newprio;
1235 3220
1236 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3221 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3222 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238 3223
1239 coro->prio = newprio; 3224 coro->prio = newprio;
1240 } 3225 }
1241} 3226}
3227 OUTPUT:
3228 RETVAL
1242 3229
1243SV * 3230SV *
1244ready (SV *self) 3231ready (SV *self)
1245 PROTOTYPE: $ 3232 PROTOTYPE: $
1246 CODE: 3233 CODE:
1247 RETVAL = boolSV (api_ready (self)); 3234 RETVAL = boolSV (api_ready (aTHX_ self));
1248 OUTPUT:
1249 RETVAL
1250
1251SV *
1252is_ready (SV *self)
1253 PROTOTYPE: $
1254 CODE:
1255 RETVAL = boolSV (api_is_ready (self));
1256 OUTPUT: 3235 OUTPUT:
1257 RETVAL 3236 RETVAL
1258 3237
1259int 3238int
1260nready (...) 3239nready (...)
… …
1262 CODE: 3241 CODE:
1263 RETVAL = coro_nready; 3242 RETVAL = coro_nready;
1264 OUTPUT: 3243 OUTPUT:
1265 RETVAL 3244 RETVAL
1266 3245
1267MODULE = Coro::State PACKAGE = Coro::AIO 3246void
3247_pool_handler (...)
3248 CODE:
3249 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3250
3251void
3252async_pool (SV *cv, ...)
3253 PROTOTYPE: &@
3254 PPCODE:
3255{
3256 HV *hv = (HV *)av_pop (av_async_pool);
3257 AV *av = newAV ();
3258 SV *cb = ST (0);
3259 int i;
3260
3261 av_extend (av, items - 2);
3262 for (i = 1; i < items; ++i)
3263 av_push (av, SvREFCNT_inc_NN (ST (i)));
3264
3265 if ((SV *)hv == &PL_sv_undef)
3266 {
3267 PUSHMARK (SP);
3268 EXTEND (SP, 2);
3269 PUSHs (sv_Coro);
3270 PUSHs ((SV *)cv_pool_handler);
3271 PUTBACK;
3272 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3273 SPAGAIN;
3274
3275 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3276 }
3277
3278 {
3279 struct coro *coro = SvSTATE_hv (hv);
3280
3281 assert (!coro->invoke_cb);
3282 assert (!coro->invoke_av);
3283 coro->invoke_cb = SvREFCNT_inc (cb);
3284 coro->invoke_av = av;
3285 }
3286
3287 api_ready (aTHX_ (SV *)hv);
3288
3289 if (GIMME_V != G_VOID)
3290 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3291 else
3292 SvREFCNT_dec (hv);
3293}
1268 3294
1269SV * 3295SV *
1270_get_state () 3296rouse_cb ()
3297 PROTOTYPE:
1271 CODE: 3298 CODE:
1272{ 3299 RETVAL = coro_new_rouse_cb (aTHX);
1273 struct io_state *data;
1274
1275 RETVAL = newSV (sizeof (struct io_state));
1276 data = (struct io_state *)SvPVX (RETVAL);
1277 SvCUR_set (RETVAL, sizeof (struct io_state));
1278 SvPOK_only (RETVAL);
1279
1280 data->errorno = errno;
1281 data->laststype = PL_laststype;
1282 data->laststatval = PL_laststatval;
1283 data->statcache = PL_statcache;
1284}
1285 OUTPUT: 3300 OUTPUT:
1286 RETVAL 3301 RETVAL
1287 3302
1288void 3303void
1289_set_state (char *data_) 3304rouse_wait (...)
1290 PROTOTYPE: $ 3305 PROTOTYPE: ;$
3306 PPCODE:
3307 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3308
3309
3310MODULE = Coro::State PACKAGE = PerlIO::cede
3311
3312BOOT:
3313 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3314
3315
3316MODULE = Coro::State PACKAGE = Coro::Semaphore
3317
3318SV *
3319new (SV *klass, SV *count = 0)
1291 CODE: 3320 CODE:
1292{ 3321 RETVAL = sv_bless (
1293 struct io_state *data = (void *)data_; 3322 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3323 GvSTASH (CvGV (cv))
3324 );
3325 OUTPUT:
3326 RETVAL
1294 3327
1295 errno = data->errorno; 3328# helper for Coro::Channel
1296 PL_laststype = data->laststype; 3329SV *
1297 PL_laststatval = data->laststatval; 3330_alloc (int count)
1298 PL_statcache = data->statcache; 3331 CODE:
1299} 3332 RETVAL = coro_waitarray_new (aTHX_ count);
3333 OUTPUT:
3334 RETVAL
1300 3335
3336SV *
3337count (SV *self)
3338 CODE:
3339 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3340 OUTPUT:
3341 RETVAL
3342
3343void
3344up (SV *self, int adjust = 1)
3345 ALIAS:
3346 adjust = 1
3347 CODE:
3348 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3349
3350void
3351down (...)
3352 CODE:
3353 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3354
3355void
3356wait (...)
3357 CODE:
3358 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3359
3360void
3361try (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 SV *count_sv = AvARRAY (av)[0];
3366 IV count = SvIVX (count_sv);
3367
3368 if (count > 0)
3369 {
3370 --count;
3371 SvIVX (count_sv) = count;
3372 XSRETURN_YES;
3373 }
3374 else
3375 XSRETURN_NO;
3376}
3377
3378void
3379waiters (SV *self)
3380 PPCODE:
3381{
3382 AV *av = (AV *)SvRV (self);
3383 int wcount = AvFILLp (av) + 1 - 1;
3384
3385 if (GIMME_V == G_SCALAR)
3386 XPUSHs (sv_2mortal (newSViv (wcount)));
3387 else
3388 {
3389 int i;
3390 EXTEND (SP, wcount);
3391 for (i = 1; i <= wcount; ++i)
3392 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3393 }
3394}
3395
3396MODULE = Coro::State PACKAGE = Coro::Signal
3397
3398SV *
3399new (SV *klass)
3400 CODE:
3401 RETVAL = sv_bless (
3402 coro_waitarray_new (aTHX_ 0),
3403 GvSTASH (CvGV (cv))
3404 );
3405 OUTPUT:
3406 RETVAL
3407
3408void
3409wait (...)
3410 CODE:
3411 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3412
3413void
3414broadcast (SV *self)
3415 CODE:
3416{
3417 AV *av = (AV *)SvRV (self);
3418 coro_signal_wake (aTHX_ av, AvFILLp (av));
3419}
3420
3421void
3422send (SV *self)
3423 CODE:
3424{
3425 AV *av = (AV *)SvRV (self);
3426
3427 if (AvFILLp (av))
3428 coro_signal_wake (aTHX_ av, 1);
3429 else
3430 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3431}
3432
3433IV
3434awaited (SV *self)
3435 CODE:
3436 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3437 OUTPUT:
3438 RETVAL
3439
3440
3441MODULE = Coro::State PACKAGE = Coro::AnyEvent
3442
3443BOOT:
3444 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3445
3446void
3447_schedule (...)
3448 CODE:
3449{
3450 static int incede;
3451
3452 api_cede_notself (aTHX);
3453
3454 ++incede;
3455 while (coro_nready >= incede && api_cede (aTHX))
3456 ;
3457
3458 sv_setsv (sv_activity, &PL_sv_undef);
3459 if (coro_nready >= incede)
3460 {
3461 PUSHMARK (SP);
3462 PUTBACK;
3463 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3464 }
3465
3466 --incede;
3467}
3468
3469
3470MODULE = Coro::State PACKAGE = Coro::AIO
3471
3472void
3473_register (char *target, char *proto, SV *req)
3474 CODE:
3475{
3476 CV *req_cv = coro_sv_2cv (aTHX_ req);
3477 /* newXSproto doesn't return the CV on 5.8 */
3478 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3479 sv_setpv ((SV *)slf_cv, proto);
3480 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3481}
3482

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