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Comparing Coro/Coro/State.xs (file contents):
Revision 1.154 by root, Fri Sep 21 01:08:06 2007 UTC vs.
Revision 1.324 by root, Sat Nov 22 07:02:28 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
75/* 5.8.7 */ 110/* 5.8.7 */
76#ifndef SvRV_set 111#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 113#endif
79 114
… …
88/* prefer perl internal functions over our own? */ 123/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 124#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 126#endif
92 127
93/* The next macro should declare a variable stacklevel that contains and approximation 128/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 129 * portable way as possible. */
95 * and should be unique. */ 130#if __GNUC__ >= 4
96#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
97#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
98 137
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 139
101#if __GNUC__ >= 3 140#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
104#else 144#else
105# define attribute(x) 145# define attribute(x)
106# define BARRIER 146# define expect(expr,value) (expr)
147# define INLINE static
107#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
108 152
109#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
110 154
111#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
112 157
113#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
114static perl_mutex coro_mutex; 159# if CORO_PTHREAD
115# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
116# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
117#else
118# define LOCK (void)0
119# define UNLOCK (void)0
120#endif 161# endif
162#endif
121 163
122/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
123struct io_state
124{
125 int errorno;
126 I32 laststype;
127 int laststatval;
128 Stat_t statcache;
129};
130 165
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;
131static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
134static JMPENV *main_top_env; 174static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
136static 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 */
180
181static GV *irsgv; /* $/ */
182static GV *stdoutgv; /* *STDOUT */
183static SV *rv_diehook;
184static SV *rv_warnhook;
185static HV *hv_sig; /* %SIG */
186
187/* async_pool helper stuff */
188static SV *sv_pool_rss;
189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
195
196/* Coro::AnyEvent */
197static SV *sv_activity;
137 198
138static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 200static int cctx_count, cctx_idle;
140 201
202enum {
203 CC_MAPPED = 0x01,
204 CC_NOREUSE = 0x02, /* throw this away after tracing */
205 CC_TRACE = 0x04,
206 CC_TRACE_SUB = 0x08, /* trace sub calls */
207 CC_TRACE_LINE = 0x10, /* trace each statement */
208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
209};
210
141/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 212typedef struct coro_cctx
213{
143 struct coro_cctx *next; 214 struct coro_cctx *next;
144 215
145 /* the stack */ 216 /* the stack */
146 void *sptr; 217 void *sptr;
147 size_t ssize; 218 size_t ssize;
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 221 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
151 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 222 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 223 JMPENV *top_env;
153 coro_context cctx; 224 coro_context cctx;
154 225
226 U32 gen;
155#if CORO_USE_VALGRIND 227#if CORO_USE_VALGRIND
156 int valgrind_id; 228 int valgrind_id;
157#endif 229#endif
158 char inuse, mapped; 230 unsigned char flags;
159} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
160 236
161enum { 237enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 242};
167 243
168/* this is a structure representing a perl-level coroutine */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
169struct coro { 245typedef struct
170 /* the c coroutine allocated to this perl coroutine, if any */ 246{
171 coro_cctx *cctx; 247 SV *defsv;
172 248 AV *defav;
173 /* data associated with this coroutine (initial args) */ 249 SV *errsv;
174 AV *args; 250 SV *irsgv;
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */
178
179 /* optionally saved, might be zero */
180 AV *defav; /* @_ */
181 SV *defsv; /* $_ */
182 SV *errsv; /* $@ */
183 GV *deffh; /* default filehandle */
184 SV *irssv; /* $/ */
185 SV *irssv_sv; /* real $/ cache */
186
187#define VAR(name,type) type name; 251#define VAR(name,type) type name;
188# include "state.h" 252# include "state.h"
189#undef VAR 253#undef VAR
254} perl_slots;
255
256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
257
258/* this is a structure representing a perl-level coroutine */
259struct coro {
260 /* the C coroutine allocated to this perl coroutine, if any */
261 coro_cctx *cctx;
262
263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
265 AV *mainstack;
266 perl_slots *slot; /* basically the saved sp */
267
268 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
274
275 /* statistics */
276 int usecount; /* number of transfers to this coro */
190 277
191 /* coro process data */ 278 /* coro process data */
192 int prio; 279 int prio;
280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
282
283 /* async_pool */
284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
193 287
194 /* linked list */ 288 /* linked list */
195 struct coro *next, *prev; 289 struct coro *next, *prev;
196 HV *hv; /* the perl hash associated with this coro, if any */
197}; 290};
198 291
199typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
200typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
298static struct CoroSLF slf_frame; /* the current slf frame */
201 299
202/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
203 301
204#define PRIO_MAX 3 302#define PRIO_MAX 3
205#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
208#define PRIO_IDLE -3 306#define PRIO_IDLE -3
209#define PRIO_MIN -4 307#define PRIO_MIN -4
210 308
211/* for Coro.pm */ 309/* for Coro.pm */
212static SV *coro_current; 310static SV *coro_current;
311static SV *coro_readyhook;
213static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
214static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
215static struct coro *coro_first; 314static struct coro *coro_first;
315#define coro_nready coroapi.nready
216 316
217/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
218 318
319static SV *
320coro_get_sv (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_sv (name, create);
325#endif
326 return get_sv (name, create);
327}
328
219static AV * 329static AV *
330coro_get_av (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_av (name, create);
335#endif
336 return get_av (name, create);
337}
338
339static HV *
340coro_get_hv (pTHX_ const char *name, int create)
341{
342#if PERL_VERSION_ATLEAST (5,10,0)
343 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
344 get_hv (name, create);
345#endif
346 return get_hv (name, create);
347}
348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
358static AV *
220coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
221{ 360{
222 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
223 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
224 363
225 newpadlist = newAV (); 364 newpadlist = newAV ();
226 AvREAL_off (newpadlist); 365 AvREAL_off (newpadlist);
227#if PERL_VERSION_ATLEAST (5,9,0) 366#if PERL_VERSION_ATLEAST (5,10,0)
228 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 367 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
229#else 368#else
230 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
231#endif 370#endif
232 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 371 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
233 --AvFILLp (padlist); 372 --AvFILLp (padlist);
234 373
235 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 374 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
236 av_store (newpadlist, 1, (SV *)newpad); 375 av_store (newpadlist, 1, (SV *)newpad);
237 376
238 return newpadlist; 377 return newpadlist;
239} 378}
240 379
… …
270 409
271 /* casting is fun. */ 410 /* casting is fun. */
272 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 411 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
273 free_padlist (aTHX_ padlist); 412 free_padlist (aTHX_ padlist);
274 413
275 SvREFCNT_dec (av); 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
276 415
277 return 0; 416 return 0;
278} 417}
279 418
419#define CORO_MAGIC_type_cv 26
280#define PERL_MAGIC_coro PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
281 421
282static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 422static MGVTBL coro_cv_vtbl = {
423 0, 0, 0, 0,
424 coro_cv_free
425};
283 426
284#define CORO_MAGIC(cv) \ 427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
285 SvMAGIC (cv) \ 429 ? SvMAGIC (sv) \
286 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 430 : mg_find (sv, type))
287 ? SvMAGIC (cv) \ 431
288 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 432#define CORO_MAGIC(sv, type) \
433 (expect_true (SvMAGIC (sv)) \
434 ? CORO_MAGIC_NN (sv, type) \
289 : 0 435 : 0)
436
437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
439
440INLINE struct coro *
441SvSTATE_ (pTHX_ SV *coro)
442{
443 HV *stash;
444 MAGIC *mg;
445
446 if (SvROK (coro))
447 coro = SvRV (coro);
448
449 if (expect_false (SvTYPE (coro) != SVt_PVHV))
450 croak ("Coro::State object required");
451
452 stash = SvSTASH (coro);
453 if (expect_false (stash != coro_stash && stash != coro_state_stash))
454 {
455 /* very slow, but rare, check */
456 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
457 croak ("Coro::State object required");
458 }
459
460 mg = CORO_MAGIC_state (coro);
461 return (struct coro *)mg->mg_ptr;
462}
463
464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
290 469
291/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
292static void 471static void
293get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
294{ 473{
295 MAGIC *mg = CORO_MAGIC (cv); 474 MAGIC *mg = CORO_MAGIC_cv (cv);
296 AV *av; 475 AV *av;
297 476
298 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 477 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 478 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300 else 479 else
301 { 480 {
302#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
303 /* this is probably cleaner, but also slower? */ 482 /* this is probably cleaner? but also slower! */
483 /* in practise, it seems to be less stable */
304 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
305 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
306 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
307 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
308#else 488#else
309 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
310#endif 490#endif
311 } 491 }
312} 492}
313 493
314static void 494static void
315put_padlist (pTHX_ CV *cv) 495put_padlist (pTHX_ CV *cv)
316{ 496{
317 MAGIC *mg = CORO_MAGIC (cv); 497 MAGIC *mg = CORO_MAGIC_cv (cv);
318 AV *av; 498 AV *av;
319 499
320 if (!mg) 500 if (expect_false (!mg))
321 { 501 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324 mg->mg_virtual = &vtbl_coro;
325 mg->mg_obj = (SV *)newAV ();
326 }
327 502
328 av = (AV *)mg->mg_obj; 503 av = (AV *)mg->mg_obj;
329 504
330 if (AvFILLp (av) >= AvMAX (av)) 505 if (expect_false (AvFILLp (av) >= AvMAX (av)))
331 av_extend (av, AvMAX (av) + 1); 506 av_extend (av, AvMAX (av) + 1);
332 507
333 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 508 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334} 509}
335 510
336/** load & save, init *******************************************************/ 511/** load & save, init *******************************************************/
337 512
338#define SB do {
339#define SE } while (0)
340
341#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342
343static void 513static void
344load_perl (pTHX_ Coro__State c) 514load_perl (pTHX_ Coro__State c)
345{ 515{
516 perl_slots *slot = c->slot;
517 c->slot = 0;
518
519 PL_mainstack = c->mainstack;
520
521 GvSV (PL_defgv) = slot->defsv;
522 GvAV (PL_defgv) = slot->defav;
523 GvSV (PL_errgv) = slot->errsv;
524 GvSV (irsgv) = slot->irsgv;
525
346#define VAR(name,type) PL_ ## name = c->name; 526 #define VAR(name,type) PL_ ## name = slot->name;
347# include "state.h" 527 # include "state.h"
348#undef VAR 528 #undef VAR
349
350 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355 if (c->irssv)
356 {
357 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358 {
359 SvREFCNT_dec (c->irssv);
360 c->irssv = 0;
361 }
362 else
363 {
364 REPLACE_SV (PL_rs, c->irssv);
365 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366 sv_setsv (c->irssv_sv, PL_rs);
367 }
368 }
369 529
370 { 530 {
371 dSP; 531 dSP;
532
372 CV *cv; 533 CV *cv;
373 534
374 /* now do the ugly restore mess */ 535 /* now do the ugly restore mess */
375 while ((cv = (CV *)POPs)) 536 while (expect_true (cv = (CV *)POPs))
376 { 537 {
377 put_padlist (aTHX_ cv); /* mark this padlist as available */ 538 put_padlist (aTHX_ cv); /* mark this padlist as available */
378 CvDEPTH (cv) = PTR2IV (POPs); 539 CvDEPTH (cv) = PTR2IV (POPs);
379 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
380 } 541 }
381 542
382 PUTBACK; 543 PUTBACK;
383 } 544 }
545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
384} 548}
385 549
386static void 550static void
387save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
388{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
389 { 556 {
390 dSP; 557 dSP;
391 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
392 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
393 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
395 /* 562 /*
396 * the worst thing you can imagine happens first - we have to save 563 * the worst thing you can imagine happens first - we have to save
397 * (and reinitialize) all cv's in the whole callchain :( 564 * (and reinitialize) all cv's in the whole callchain :(
398 */ 565 */
399 566
400 EXTEND (SP, 3 + 1);
401 PUSHs (Nullsv); 567 XPUSHs (Nullsv);
402 /* this loop was inspired by pp_caller */ 568 /* this loop was inspired by pp_caller */
403 for (;;) 569 for (;;)
404 { 570 {
405 while (cxix >= 0) 571 while (expect_true (cxix >= 0))
406 { 572 {
407 PERL_CONTEXT *cx = &ccstk[cxix--]; 573 PERL_CONTEXT *cx = &ccstk[cxix--];
408 574
409 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 575 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410 { 576 {
411 CV *cv = cx->blk_sub.cv; 577 CV *cv = cx->blk_sub.cv;
412 578
413 if (CvDEPTH (cv)) 579 if (expect_true (CvDEPTH (cv)))
414 { 580 {
415 EXTEND (SP, 3); 581 EXTEND (SP, 3);
416 PUSHs ((SV *)CvPADLIST (cv)); 582 PUSHs ((SV *)CvPADLIST (cv));
417 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 583 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
418 PUSHs ((SV *)cv); 584 PUSHs ((SV *)cv);
419 585
420 CvDEPTH (cv) = 0; 586 CvDEPTH (cv) = 0;
421 get_padlist (aTHX_ cv); 587 get_padlist (aTHX_ cv);
422 } 588 }
423 } 589 }
424 } 590 }
425 591
426 if (top_si->si_type == PERLSI_MAIN) 592 if (expect_true (top_si->si_type == PERLSI_MAIN))
427 break; 593 break;
428 594
429 top_si = top_si->si_prev; 595 top_si = top_si->si_prev;
430 ccstk = top_si->si_cxstack; 596 ccstk = top_si->si_cxstack;
431 cxix = top_si->si_cxix; 597 cxix = top_si->si_cxix;
432 } 598 }
433 599
434 PUTBACK; 600 PUTBACK;
435 } 601 }
436 602
437 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 603 /* allocate some space on the context stack for our purposes */
438 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 604 /* we manually unroll here, as usually 2 slots is enough */
439 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 605 if (SLOT_COUNT >= 1) CXINC;
440 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 606 if (SLOT_COUNT >= 2) CXINC;
441 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 607 if (SLOT_COUNT >= 3) CXINC;
608 {
609 int i;
610 for (i = 3; i < SLOT_COUNT; ++i)
611 CXINC;
612 }
613 cxstack_ix -= SLOT_COUNT; /* undo allocation */
442 614
615 c->mainstack = PL_mainstack;
616
617 {
618 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
619
620 slot->defav = GvAV (PL_defgv);
621 slot->defsv = DEFSV;
622 slot->errsv = ERRSV;
623 slot->irsgv = GvSV (irsgv);
624
443#define VAR(name,type)c->name = PL_ ## name; 625 #define VAR(name,type) slot->name = PL_ ## name;
444# include "state.h" 626 # include "state.h"
445#undef VAR 627 #undef VAR
628 }
446} 629}
447 630
448/* 631/*
449 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
450 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
451 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
452 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
453 */ 636 */
454#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
455# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
456#else 639#else
457static void 640static void
458coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
459{ 642{
460 PL_curstackinfo = new_stackinfo(64, 4); 643 PL_curstackinfo = new_stackinfo(32, 8);
461 PL_curstackinfo->si_type = PERLSI_MAIN; 644 PL_curstackinfo->si_type = PERLSI_MAIN;
462 PL_curstack = PL_curstackinfo->si_stack; 645 PL_curstack = PL_curstackinfo->si_stack;
463 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 646 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464 647
465 PL_stack_base = AvARRAY(PL_curstack); 648 PL_stack_base = AvARRAY(PL_curstack);
466 PL_stack_sp = PL_stack_base; 649 PL_stack_sp = PL_stack_base;
467 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 650 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468 651
469 New(50,PL_tmps_stack,64,SV*); 652 New(50,PL_tmps_stack,32,SV*);
470 PL_tmps_floor = -1; 653 PL_tmps_floor = -1;
471 PL_tmps_ix = -1; 654 PL_tmps_ix = -1;
472 PL_tmps_max = 64; 655 PL_tmps_max = 32;
473 656
474 New(54,PL_markstack,16,I32); 657 New(54,PL_markstack,16,I32);
475 PL_markstack_ptr = PL_markstack; 658 PL_markstack_ptr = PL_markstack;
476 PL_markstack_max = PL_markstack + 16; 659 PL_markstack_max = PL_markstack + 16;
477 660
478#ifdef SET_MARK_OFFSET 661#ifdef SET_MARK_OFFSET
479 SET_MARK_OFFSET; 662 SET_MARK_OFFSET;
480#endif 663#endif
481 664
482 New(54,PL_scopestack,16,I32); 665 New(54,PL_scopestack,8,I32);
483 PL_scopestack_ix = 0; 666 PL_scopestack_ix = 0;
484 PL_scopestack_max = 16; 667 PL_scopestack_max = 8;
485 668
486 New(54,PL_savestack,32,ANY); 669 New(54,PL_savestack,24,ANY);
487 PL_savestack_ix = 0; 670 PL_savestack_ix = 0;
488 PL_savestack_max = 32; 671 PL_savestack_max = 24;
489 672
490#if !PERL_VERSION_ATLEAST (5,9,0) 673#if !PERL_VERSION_ATLEAST (5,10,0)
491 New(54,PL_retstack,8,OP*); 674 New(54,PL_retstack,4,OP*);
492 PL_retstack_ix = 0; 675 PL_retstack_ix = 0;
493 PL_retstack_max = 8; 676 PL_retstack_max = 4;
494#endif 677#endif
495} 678}
496#endif 679#endif
497 680
498/* 681/*
499 * destroy the stacks, the callchain etc... 682 * destroy the stacks, the callchain etc...
500 */ 683 */
501static void 684static void
502coro_destroy_stacks (pTHX) 685coro_destruct_stacks (pTHX)
503{ 686{
504 if (!IN_DESTRUCT)
505 {
506 /* restore all saved variables and stuff */
507 LEAVE_SCOPE (0);
508 assert (PL_tmps_floor == -1);
509
510 /* free all temporaries */
511 FREETMPS;
512 assert (PL_tmps_ix == -1);
513
514 /* unwind all extra stacks */
515 POPSTACK_TO (PL_mainstack);
516
517 /* unwind main stack */
518 dounwind (-1);
519 }
520
521 while (PL_curstackinfo->si_next) 687 while (PL_curstackinfo->si_next)
522 PL_curstackinfo = PL_curstackinfo->si_next; 688 PL_curstackinfo = PL_curstackinfo->si_next;
523 689
524 while (PL_curstackinfo) 690 while (PL_curstackinfo)
525 { 691 {
… …
535 701
536 Safefree (PL_tmps_stack); 702 Safefree (PL_tmps_stack);
537 Safefree (PL_markstack); 703 Safefree (PL_markstack);
538 Safefree (PL_scopestack); 704 Safefree (PL_scopestack);
539 Safefree (PL_savestack); 705 Safefree (PL_savestack);
540#if !PERL_VERSION_ATLEAST (5,9,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
541 Safefree (PL_retstack); 707 Safefree (PL_retstack);
542#endif 708#endif
543} 709}
544 710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
719
545static size_t 720static size_t
546coro_rss (struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
547{ 722{
548 size_t rss = sizeof (coro); 723 size_t rss = sizeof (*coro);
549 724
550 if (coro->mainstack) 725 if (coro->mainstack)
551 { 726 {
552 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
553 { 728 {
554 #define VAR(name,type)coro->name = PL_ ## name; 729 #define SYM(sym) PL_ ## sym
555 # include "state.h" 730 CORO_RSS;
556 #undef VAR 731 #undef SYM
557 } 732 }
558 733 else
559 rss += sizeof (coro->curstackinfo); 734 {
560 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 735 #define SYM(sym) coro->slot->sym
561 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
562 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 737 #undef SYM
563 rss += coro->tmps_max * sizeof (SV *); 738 }
564 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
565 rss += coro->scopestack_max * sizeof (I32);
566 rss += coro->savestack_max * sizeof (ANY);
567
568#if !PERL_VERSION_ATLEAST (5,9,0)
569 rss += coro->retstack_max * sizeof (OP *);
570#endif
571 } 739 }
572 740
573 return rss; 741 return rss;
574} 742}
575 743
576/** coroutine stack handling ************************************************/ 744/** coroutine stack handling ************************************************/
577 745
746static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
747static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
748static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
749
750/* apparently < 5.8.8 */
751#ifndef MgPV_nolen_const
752#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
753 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
754 (const char*)(mg)->mg_ptr)
755#endif
756
757/*
758 * This overrides the default magic get method of %SIG elements.
759 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
760 * and instead of tryign to save and restore the hash elements, we just provide
761 * readback here.
762 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
763 * not expecting this to actually change the hook. This is a potential problem
764 * when a schedule happens then, but we ignore this.
765 */
578static void 766static int
767coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
768{
769 const char *s = MgPV_nolen_const (mg);
770
771 if (*s == '_')
772 {
773 SV **svp = 0;
774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
781 return 0;
782 }
783 }
784
785 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
786}
787
788static int
789coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
790{
791 const char *s = MgPV_nolen_const (mg);
792
793 if (*s == '_')
794 {
795 SV **svp = 0;
796
797 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799
800 if (svp)
801 {
802 SV *old = *svp;
803 *svp = 0;
804 SvREFCNT_dec (old);
805 return 0;
806 }
807 }
808
809 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
810}
811
812static int
813coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
814{
815 const char *s = MgPV_nolen_const (mg);
816
817 if (*s == '_')
818 {
819 SV **svp = 0;
820
821 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
822 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
823
824 if (svp)
825 {
826 SV *old = *svp;
827 *svp = newSVsv (sv);
828 SvREFCNT_dec (old);
829 return 0;
830 }
831 }
832
833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
834}
835
836static void
837prepare_nop (pTHX_ struct coro_transfer_args *ta)
838{
839 /* kind of mega-hacky, but works */
840 ta->next = ta->prev = (struct coro *)ta;
841}
842
843static int
844slf_check_nop (pTHX_ struct CoroSLF *frame)
845{
846 return 0;
847}
848
849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
579setup_coro (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
580{ 859{
581 /* 860 /*
582 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
583 */ 862 */
584 coro_init_stacks (aTHX); 863 coro_init_stacks (aTHX);
585 864
865 PL_runops = RUNOPS_DEFAULT;
586 PL_curcop = &PL_compiling; 866 PL_curcop = &PL_compiling;
587 PL_in_eval = EVAL_NULL; 867 PL_in_eval = EVAL_NULL;
588 PL_comppad = 0; 868 PL_comppad = 0;
589 PL_curpm = 0; 869 PL_curpm = 0;
870 PL_curpad = 0;
590 PL_localizing = 0; 871 PL_localizing = 0;
591 PL_dirty = 0; 872 PL_dirty = 0;
592 PL_restartop = 0; 873 PL_restartop = 0;
874#if PERL_VERSION_ATLEAST (5,10,0)
875 PL_parser = 0;
876#endif
877
878 /* recreate the die/warn hooks */
879 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
880 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
881
882 GvSV (PL_defgv) = newSV (0);
883 GvAV (PL_defgv) = coro->args; coro->args = 0;
884 GvSV (PL_errgv) = newSV (0);
885 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
886 PL_rs = newSVsv (GvSV (irsgv));
887 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
593 888
594 { 889 {
595 dSP; 890 dSP;
596 LOGOP myop; 891 UNOP myop;
597 892
598 SvREFCNT_dec (GvAV (PL_defgv));
599 GvAV (PL_defgv) = coro->args; coro->args = 0;
600
601 Zero (&myop, 1, LOGOP); 893 Zero (&myop, 1, UNOP);
602 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
603 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
604 897
605 PUSHMARK (SP); 898 PUSHMARK (SP);
606 XPUSHs (av_shift (GvAV (PL_defgv))); 899 PUSHs ((SV *)coro->startcv);
607 PUTBACK; 900 PUTBACK;
608 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
609 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
610 SPAGAIN;
611 } 903 }
612 904
613 ENTER; /* necessary e.g. for dounwind */ 905 /* this newly created coroutine might be run on an existing cctx which most
614} 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
907 */
908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
615 910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
921}
922
616static void 923static void
924coro_destruct (pTHX_ struct coro *coro)
925{
926 if (!IN_DESTRUCT)
927 {
928 /* restore all saved variables and stuff */
929 LEAVE_SCOPE (0);
930 assert (PL_tmps_floor == -1);
931
932 /* free all temporaries */
933 FREETMPS;
934 assert (PL_tmps_ix == -1);
935
936 /* unwind all extra stacks */
937 POPSTACK_TO (PL_mainstack);
938
939 /* unwind main stack */
940 dounwind (-1);
941 }
942
943 SvREFCNT_dec (GvSV (PL_defgv));
944 SvREFCNT_dec (GvAV (PL_defgv));
945 SvREFCNT_dec (GvSV (PL_errgv));
946 SvREFCNT_dec (PL_defoutgv);
947 SvREFCNT_dec (PL_rs);
948 SvREFCNT_dec (GvSV (irsgv));
949
950 SvREFCNT_dec (PL_diehook);
951 SvREFCNT_dec (PL_warnhook);
952
953 SvREFCNT_dec (coro->saved_deffh);
954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
957
958 coro_destruct_stacks (aTHX);
959}
960
961INLINE void
617free_coro_mortal (pTHX) 962free_coro_mortal (pTHX)
618{ 963{
619 if (coro_mortal) 964 if (expect_true (coro_mortal))
620 { 965 {
621 SvREFCNT_dec (coro_mortal); 966 SvREFCNT_dec (coro_mortal);
622 coro_mortal = 0; 967 coro_mortal = 0;
623 } 968 }
624} 969}
625 970
626/* inject a fake call to Coro::State::_cctx_init into the execution */ 971static int
627/* _cctx_init should be careful, as it could be called at almost any time */ 972runops_trace (pTHX)
628/* during execution of a perl program */ 973{
974 COP *oldcop = 0;
975 int oldcxix = -2;
976
977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
978 {
979 PERL_ASYNC_CHECK ();
980
981 if (cctx_current->flags & CC_TRACE_ALL)
982 {
983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
984 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 SV **bot, **top;
987 AV *av = newAV (); /* return values */
988 SV **cb;
989 dSP;
990
991 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0));
993 if (isGV (gv))
994 gv_efullname3 (fullname, gv, 0);
995
996 bot = PL_stack_base + cx->blk_oldsp + 1;
997 top = cx->blk_gimme == G_ARRAY ? SP + 1
998 : cx->blk_gimme == G_SCALAR ? bot + 1
999 : bot;
1000
1001 av_extend (av, top - bot);
1002 while (bot < top)
1003 av_push (av, SvREFCNT_inc_NN (*bot++));
1004
1005 PL_runops = RUNOPS_DEFAULT;
1006 ENTER;
1007 SAVETMPS;
1008 EXTEND (SP, 3);
1009 PUSHMARK (SP);
1010 PUSHs (&PL_sv_no);
1011 PUSHs (fullname);
1012 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1013 PUTBACK;
1014 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1015 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1016 SPAGAIN;
1017 FREETMPS;
1018 LEAVE;
1019 PL_runops = runops_trace;
1020 }
1021
1022 if (oldcop != PL_curcop)
1023 {
1024 oldcop = PL_curcop;
1025
1026 if (PL_curcop != &PL_compiling)
1027 {
1028 SV **cb;
1029
1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1031 {
1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1033
1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1035 {
1036 dSP;
1037 GV *gv = CvGV (cx->blk_sub.cv);
1038 SV *fullname = sv_2mortal (newSV (0));
1039
1040 if (isGV (gv))
1041 gv_efullname3 (fullname, gv, 0);
1042
1043 PL_runops = RUNOPS_DEFAULT;
1044 ENTER;
1045 SAVETMPS;
1046 EXTEND (SP, 3);
1047 PUSHMARK (SP);
1048 PUSHs (&PL_sv_yes);
1049 PUSHs (fullname);
1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1051 PUTBACK;
1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1054 SPAGAIN;
1055 FREETMPS;
1056 LEAVE;
1057 PL_runops = runops_trace;
1058 }
1059
1060 oldcxix = cxstack_ix;
1061 }
1062
1063 if (cctx_current->flags & CC_TRACE_LINE)
1064 {
1065 dSP;
1066
1067 PL_runops = RUNOPS_DEFAULT;
1068 ENTER;
1069 SAVETMPS;
1070 EXTEND (SP, 3);
1071 PL_runops = RUNOPS_DEFAULT;
1072 PUSHMARK (SP);
1073 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1074 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1075 PUTBACK;
1076 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1077 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1078 SPAGAIN;
1079 FREETMPS;
1080 LEAVE;
1081 PL_runops = runops_trace;
1082 }
1083 }
1084 }
1085 }
1086 }
1087
1088 TAINT_NOT;
1089 return 0;
1090}
1091
1092static struct CoroSLF cctx_ssl_frame;
1093
1094static void
1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1096{
1097 ta->prev = 0;
1098}
1099
1100static int
1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1102{
1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
629static void NOINLINE 1109static void NOINLINE
630prepare_cctx (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
631{ 1111{
632 dSP; 1112 PL_top_env = &PL_start_env;
633 LOGOP myop;
634 1113
635 Zero (&myop, 1, LOGOP); 1114 if (cctx_current->flags & CC_TRACE)
636 myop.op_next = PL_op; 1115 PL_runops = runops_trace;
637 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
638 1116
639 PUSHMARK (SP); 1117 /* we already must be executing an SLF op, there is no other valid way
640 EXTEND (SP, 2); 1118 * that can lead to creation of a new cctx */
641 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
642 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
643 PUTBACK; 1121
644 PL_op = (OP *)&myop; 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
645 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1123 cctx_ssl_frame = slf_frame;
646 SPAGAIN; 1124
1125 slf_frame.prepare = slf_prepare_set_stacklevel;
1126 slf_frame.check = slf_check_set_stacklevel;
1127}
1128
1129/* the tail of transfer: execute stuff we can only do after a transfer */
1130INLINE void
1131transfer_tail (pTHX)
1132{
1133 free_coro_mortal (aTHX);
647} 1134}
648 1135
649/* 1136/*
650 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
651 */ 1138 */
652static void 1139static void
653coro_run (void *arg) 1140cctx_run (void *arg)
654{ 1141{
1142#ifdef USE_ITHREADS
1143# if CORO_PTHREAD
1144 PERL_SET_CONTEXT (coro_thx);
1145# endif
1146#endif
1147 {
655 dTHX; 1148 dTHX;
656 1149
657 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1150 /* normally we would need to skip the entersub here */
658 UNLOCK; 1151 /* not doing so will re-execute it, which is exactly what we want */
1152 /* PL_nop = PL_nop->op_next */
659 1153
660 PL_top_env = &PL_start_env;
661
662 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
663 prepare_cctx (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
664 1156
1157 /* cctx_run is the alternative tail of transfer() */
1158 transfer_tail (aTHX);
1159
665 /* somebody or something will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
666 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
667 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
668
669 /* 1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
1167
1168 /*
670 * If perl-run returns we assume exit() was being called or the coro 1169 * If perl-run returns we assume exit() was being called or the coro
671 * fell off the end, which seems to be the only valid (non-bug) 1170 * fell off the end, which seems to be the only valid (non-bug)
672 * reason for perl_run to return. We try to exit by jumping to the 1171 * reason for perl_run to return. We try to exit by jumping to the
673 * bootstrap-time "top" top_env, as we cannot restore the "main" 1172 * bootstrap-time "top" top_env, as we cannot restore the "main"
674 * coroutine as Coro has no such concept 1173 * coroutine as Coro has no such concept
675 */ 1174 */
676 PL_top_env = main_top_env; 1175 PL_top_env = main_top_env;
677 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1176 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1177 }
678} 1178}
679 1179
680static coro_cctx * 1180static coro_cctx *
681cctx_new () 1181cctx_new ()
682{ 1182{
683 coro_cctx *cctx; 1183 coro_cctx *cctx;
1184
1185 ++cctx_count;
1186 New (0, cctx, 1, coro_cctx);
1187
1188 cctx->gen = cctx_gen;
1189 cctx->flags = 0;
1190 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1191
1192 return cctx;
1193}
1194
1195/* create a new cctx only suitable as source */
1196static coro_cctx *
1197cctx_new_empty ()
1198{
1199 coro_cctx *cctx = cctx_new ();
1200
1201 cctx->sptr = 0;
1202 coro_create (&cctx->cctx, 0, 0, 0, 0);
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx suitable as destination/running a perl interpreter */
1208static coro_cctx *
1209cctx_new_run ()
1210{
1211 coro_cctx *cctx = cctx_new ();
684 void *stack_start; 1212 void *stack_start;
685 size_t stack_size; 1213 size_t stack_size;
686 1214
687 ++cctx_count;
688
689 Newz (0, cctx, 1, coro_cctx);
690
691#if HAVE_MMAP 1215#if HAVE_MMAP
692
693 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1216 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
694 /* mmap supposedly does allocate-on-write for us */ 1217 /* mmap supposedly does allocate-on-write for us */
695 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1218 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
696 1219
697 if (cctx->sptr != (void *)-1) 1220 if (cctx->sptr != (void *)-1)
698 { 1221 {
699# if CORO_STACKGUARD 1222 #if CORO_STACKGUARD
700 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1223 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
701# endif 1224 #endif
702 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1225 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
703 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1226 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
704 cctx->mapped = 1; 1227 cctx->flags |= CC_MAPPED;
705 } 1228 }
706 else 1229 else
707#endif 1230#endif
708 { 1231 {
709 cctx->ssize = coro_stacksize * (long)sizeof (long); 1232 cctx->ssize = cctx_stacksize * (long)sizeof (long);
710 New (0, cctx->sptr, coro_stacksize, long); 1233 New (0, cctx->sptr, cctx_stacksize, long);
711 1234
712 if (!cctx->sptr) 1235 if (!cctx->sptr)
713 { 1236 {
714 perror ("FATAL: unable to allocate stack for coroutine"); 1237 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
715 _exit (EXIT_FAILURE); 1238 _exit (EXIT_FAILURE);
716 } 1239 }
717 1240
718 stack_start = cctx->sptr; 1241 stack_start = cctx->sptr;
719 stack_size = cctx->ssize; 1242 stack_size = cctx->ssize;
720 } 1243 }
721 1244
722 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1245 #if CORO_USE_VALGRIND
1246 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1247 #endif
1248
723 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1249 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
724 1250
725 return cctx; 1251 return cctx;
726} 1252}
727 1253
728static void 1254static void
729cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
730{ 1256{
731 if (!cctx) 1257 if (!cctx)
732 return; 1258 return;
733 1259
1260 assert (cctx != cctx_current);//D temporary
1261
734 --cctx_count; 1262 --cctx_count;
1263 coro_destroy (&cctx->cctx);
735 1264
1265 /* coro_transfer creates new, empty cctx's */
1266 if (cctx->sptr)
1267 {
736#if CORO_USE_VALGRIND 1268 #if CORO_USE_VALGRIND
737 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1269 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
738#endif 1270 #endif
739 1271
740#if HAVE_MMAP 1272#if HAVE_MMAP
741 if (cctx->mapped) 1273 if (cctx->flags & CC_MAPPED)
742 munmap (cctx->sptr, cctx->ssize); 1274 munmap (cctx->sptr, cctx->ssize);
743 else 1275 else
744#endif 1276#endif
745 Safefree (cctx->sptr); 1277 Safefree (cctx->sptr);
1278 }
746 1279
747 Safefree (cctx); 1280 Safefree (cctx);
748} 1281}
1282
1283/* wether this cctx should be destructed */
1284#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
749 1285
750static coro_cctx * 1286static coro_cctx *
751cctx_get (pTHX) 1287cctx_get (pTHX)
752{ 1288{
753 while (cctx_first) 1289 while (expect_true (cctx_first))
754 { 1290 {
755 coro_cctx *cctx = cctx_first; 1291 coro_cctx *cctx = cctx_first;
756 cctx_first = cctx->next; 1292 cctx_first = cctx->next;
757 --cctx_idle; 1293 --cctx_idle;
758 1294
759 if (cctx->ssize >= coro_stacksize) 1295 if (expect_true (!CCTX_EXPIRED (cctx)))
760 return cctx; 1296 return cctx;
761 1297
762 cctx_destroy (cctx); 1298 cctx_destroy (cctx);
763 } 1299 }
764 1300
765 PL_op = PL_op->op_next;
766 return cctx_new (); 1301 return cctx_new_run ();
767} 1302}
768 1303
769static void 1304static void
770cctx_put (coro_cctx *cctx) 1305cctx_put (coro_cctx *cctx)
771{ 1306{
1307 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1308
772 /* free another cctx if overlimit */ 1309 /* free another cctx if overlimit */
773 if (cctx_idle >= MAX_IDLE_CCTX) 1310 if (expect_false (cctx_idle >= cctx_max_idle))
774 { 1311 {
775 coro_cctx *first = cctx_first; 1312 coro_cctx *first = cctx_first;
776 cctx_first = first->next; 1313 cctx_first = first->next;
777 --cctx_idle; 1314 --cctx_idle;
778 1315
779 assert (!first->inuse);
780 cctx_destroy (first); 1316 cctx_destroy (first);
781 } 1317 }
782 1318
783 ++cctx_idle; 1319 ++cctx_idle;
784 cctx->next = cctx_first; 1320 cctx->next = cctx_first;
785 cctx_first = cctx; 1321 cctx_first = cctx;
786} 1322}
787 1323
788/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
789 1325
790/* never call directly, always through the coro_state_transfer global variable */ 1326static void
791static void NOINLINE
792transfer (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1331 if (expect_true (prev != next))
1332 {
1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1334 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1335
1336 if (expect_false (next->flags & CF_RUNNING))
1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1338
1339 if (expect_false (next->flags & CF_DESTROYED))
1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1341
1342#if !PERL_VERSION_ATLEAST (5,10,0)
1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1345#endif
1346 }
1347}
1348
1349/* always use the TRANSFER macro */
1350static void NOINLINE /* noinline so we have a fixed stackframe */
1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
793{ 1352{
794 dSTACKLEVEL; 1353 dSTACKLEVEL;
795 1354
796 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
797 if (!next) 1356 if (expect_false (!prev))
798 { 1357 {
799 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
800 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
801 }
802 else if (prev != next)
803 { 1360 }
1361 else if (expect_true (prev != next))
1362 {
804 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
805 1364
806 if (prev->flags & CF_NEW) 1365 if (expect_false (prev->flags & CF_NEW))
807 { 1366 {
808 /* create a new empty context */ 1367 /* create a new empty/source context */
809 Newz (0, prev->cctx, 1, coro_cctx);
810 prev->cctx->inuse = 1;
811 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
812 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
813 } 1370 }
814 1371
815 /*TODO: must not croak here */
816 if (!prev->flags & CF_RUNNING)
817 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
818
819 if (next->flags & CF_RUNNING)
820 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
821
822 if (next->flags & CF_DESTROYED)
823 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
824
825 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
826 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
827 1374
828 LOCK; 1375 /* first get rid of the old state */
1376 save_perl (aTHX_ prev);
829 1377
830 if (next->flags & CF_NEW) 1378 if (expect_false (next->flags & CF_NEW))
831 { 1379 {
832 /* need to start coroutine */ 1380 /* need to start coroutine */
833 next->flags &= ~CF_NEW; 1381 next->flags &= ~CF_NEW;
834 /* first get rid of the old state */
835 save_perl (aTHX_ prev);
836 /* setup coroutine call */ 1382 /* setup coroutine call */
837 setup_coro (aTHX_ next); 1383 coro_setup (aTHX_ next);
838 /* need a new stack */
839 assert (!next->cctx);
840 } 1384 }
841 else 1385 else
1386 load_perl (aTHX_ next);
1387
1388 assert (!prev->cctx);//D temporary
1389
1390 /* possibly untie and reuse the cctx */
1391 if (expect_true (
1392 cctx_current->idle_sp == STACKLEVEL
1393 && !(cctx_current->flags & CC_TRACE)
1394 && !force_cctx
1395 ))
842 { 1396 {
843 /* coroutine already started */ 1397 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
844 save_perl (aTHX_ prev); 1398 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
845 load_perl (aTHX_ next); 1399
1400 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1401 /* without this the next cctx_get might destroy the running cctx while still in use */
1402 if (expect_false (CCTX_EXPIRED (cctx_current)))
1403 if (expect_true (!next->cctx))
1404 next->cctx = cctx_get (aTHX);
1405
1406 cctx_put (cctx_current);
846 } 1407 }
1408 else
1409 prev->cctx = cctx_current;
847 1410
848 prev__cctx = prev->cctx; 1411 ++next->usecount;
849 1412
850 /* possibly "free" the cctx */ 1413 cctx_prev = cctx_current;
851 if (prev__cctx->idle_sp == STACKLEVEL) 1414 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1415
1416 next->cctx = 0;
1417
1418 if (expect_false (cctx_prev != cctx_current))
852 { 1419 {
853 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1420 cctx_prev->top_env = PL_top_env;
854 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1421 PL_top_env = cctx_current->top_env;
855 1422 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
856 prev->cctx = 0;
857
858 cctx_put (prev__cctx);
859 prev__cctx->inuse = 0;
860 } 1423 }
861 1424
862 if (!next->cctx) 1425 transfer_tail (aTHX);
863 {
864 next->cctx = cctx_get (aTHX);
865 assert (!next->cctx->inuse);
866 next->cctx->inuse = 1;
867 }
868
869 if (prev__cctx != next->cctx)
870 {
871 prev__cctx->top_env = PL_top_env;
872 PL_top_env = next->cctx->top_env;
873 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
874 }
875
876 free_coro_mortal (aTHX);
877 UNLOCK;
878 } 1426 }
879} 1427}
880 1428
881struct transfer_args 1429#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
882{
883 struct coro *prev, *next;
884};
885
886#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1430#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
887 1431
888/** high level stuff ********************************************************/ 1432/** high level stuff ********************************************************/
889 1433
890static int 1434static int
891coro_state_destroy (pTHX_ struct coro *coro) 1435coro_state_destroy (pTHX_ struct coro *coro)
892{ 1436{
893 if (coro->flags & CF_DESTROYED) 1437 if (coro->flags & CF_DESTROYED)
894 return 0; 1438 return 0;
1439
1440 if (coro->on_destroy)
1441 coro->on_destroy (aTHX_ coro);
895 1442
896 coro->flags |= CF_DESTROYED; 1443 coro->flags |= CF_DESTROYED;
897 1444
898 if (coro->flags & CF_READY) 1445 if (coro->flags & CF_READY)
899 { 1446 {
900 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1447 /* reduce nready, as destroying a ready coro effectively unreadies it */
901 /* alternative: look through all ready queues and remove the coro */ 1448 /* alternative: look through all ready queues and remove the coro */
902 LOCK;
903 --coro_nready; 1449 --coro_nready;
904 UNLOCK;
905 } 1450 }
906 else 1451 else
907 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1452 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
908 1453
909 if (coro->mainstack && coro->mainstack != main_mainstack) 1454 if (coro->mainstack && coro->mainstack != main_mainstack)
910 { 1455 {
911 struct coro temp; 1456 struct coro temp;
912 1457
913 assert (!(coro->flags & CF_RUNNING)); 1458 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
914
915 Zero (&temp, 1, struct coro);
916 temp.save = CORO_SAVE_ALL;
917
918 if (coro->flags & CF_RUNNING)
919 croak ("FATAL: tried to destroy currently running coroutine");
920 1459
921 save_perl (aTHX_ &temp); 1460 save_perl (aTHX_ &temp);
922 load_perl (aTHX_ coro); 1461 load_perl (aTHX_ coro);
923 1462
924 coro_destroy_stacks (aTHX); 1463 coro_destruct (aTHX_ coro);
925 1464
926 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1465 load_perl (aTHX_ &temp);
927 1466
928 coro->mainstack = 0; 1467 coro->slot = 0;
929 } 1468 }
930 1469
931 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
932 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
933 1474
934 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
935 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
936 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
937 1478
… …
974#else 1515#else
975# define MGf_DUP 0 1516# define MGf_DUP 0
976#endif 1517#endif
977}; 1518};
978 1519
979static struct coro *
980SvSTATE_ (pTHX_ SV *coro)
981{
982 HV *stash;
983 MAGIC *mg;
984
985 if (SvROK (coro))
986 coro = SvRV (coro);
987
988 stash = SvSTASH (coro);
989 if (stash != coro_stash && stash != coro_state_stash)
990 {
991 /* very slow, but rare, check */
992 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
993 croak ("Coro::State object required");
994 }
995
996 mg = CORO_MAGIC (coro);
997 return (struct coro *)mg->mg_ptr;
998}
999
1000#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1001
1002static void 1520static void
1003prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1521prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1004{ 1522{
1005 ta->prev = SvSTATE (prev_sv); 1523 ta->prev = SvSTATE (prev_sv);
1006 ta->next = SvSTATE (next_sv); 1524 ta->next = SvSTATE (next_sv);
1525 TRANSFER_CHECK (*ta);
1007} 1526}
1008 1527
1009static void 1528static void
1010api_transfer (SV *prev_sv, SV *next_sv) 1529api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1011{ 1530{
1012 dTHX;
1013 struct transfer_args ta; 1531 struct coro_transfer_args ta;
1014 1532
1015 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1016 TRANSFER (ta); 1534 TRANSFER (ta, 1);
1017} 1535}
1018 1536
1019static int 1537/*****************************************************************************/
1020api_save (SV *coro_sv, int new_save) 1538/* gensub: simple closure generation utility */
1021{
1022 dTHX;
1023 struct coro *coro = SvSTATE (coro_sv);
1024 int old_save = coro->save;
1025 1539
1026 if (new_save >= 0) 1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1027 coro->save = new_save;
1028 1541
1029 return old_save; 1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1030} 1558}
1031 1559
1032/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1033 1561
1034static void 1562INLINE void
1035coro_enq (pTHX_ SV *coro_sv) 1563coro_enq (pTHX_ struct coro *coro)
1036{ 1564{
1037 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1565 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1038} 1566}
1039 1567
1040static SV * 1568INLINE SV *
1041coro_deq (pTHX_ int min_prio) 1569coro_deq (pTHX)
1042{ 1570{
1043 int prio = PRIO_MAX - PRIO_MIN; 1571 int prio;
1044 1572
1045 min_prio -= PRIO_MIN;
1046 if (min_prio < 0)
1047 min_prio = 0;
1048
1049 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1573 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1050 if (AvFILLp (coro_ready [prio]) >= 0) 1574 if (AvFILLp (coro_ready [prio]) >= 0)
1051 return av_shift (coro_ready [prio]); 1575 return av_shift (coro_ready [prio]);
1052 1576
1053 return 0; 1577 return 0;
1054} 1578}
1055 1579
1056static int 1580static int
1057api_ready (SV *coro_sv) 1581api_ready (pTHX_ SV *coro_sv)
1058{ 1582{
1059 dTHX;
1060 struct coro *coro; 1583 struct coro *coro;
1584 SV *sv_hook;
1585 void (*xs_hook)(void);
1061 1586
1062 if (SvROK (coro_sv)) 1587 if (SvROK (coro_sv))
1063 coro_sv = SvRV (coro_sv); 1588 coro_sv = SvRV (coro_sv);
1064 1589
1065 coro = SvSTATE (coro_sv); 1590 coro = SvSTATE (coro_sv);
… …
1067 if (coro->flags & CF_READY) 1592 if (coro->flags & CF_READY)
1068 return 0; 1593 return 0;
1069 1594
1070 coro->flags |= CF_READY; 1595 coro->flags |= CF_READY;
1071 1596
1072 LOCK; 1597 sv_hook = coro_nready ? 0 : coro_readyhook;
1073 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1598 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1599
1600 coro_enq (aTHX_ coro);
1074 ++coro_nready; 1601 ++coro_nready;
1075 UNLOCK; 1602
1603 if (sv_hook)
1604 {
1605 dSP;
1606
1607 ENTER;
1608 SAVETMPS;
1609
1610 PUSHMARK (SP);
1611 PUTBACK;
1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1613
1614 FREETMPS;
1615 LEAVE;
1616 }
1617
1618 if (xs_hook)
1619 xs_hook ();
1076 1620
1077 return 1; 1621 return 1;
1078} 1622}
1079 1623
1080static int 1624static int
1081api_is_ready (SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1082{ 1626{
1083 dTHX;
1084 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1085} 1628}
1086 1629
1630/* expects to own a reference to next->hv */
1631INLINE void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{
1634 SV *prev_sv = SvRV (coro_current);
1635
1636 ta->prev = SvSTATE_hv (prev_sv);
1637 ta->next = next;
1638
1639 TRANSFER_CHECK (*ta);
1640
1641 SvRV_set (coro_current, (SV *)next->hv);
1642
1643 free_coro_mortal (aTHX);
1644 coro_mortal = prev_sv;
1645}
1646
1087static void 1647static void
1088prepare_schedule (pTHX_ struct transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1089{ 1649{
1090 SV *prev_sv, *next_sv;
1091
1092 for (;;) 1650 for (;;)
1093 { 1651 {
1094 LOCK;
1095 next_sv = coro_deq (aTHX_ PRIO_MIN); 1652 SV *next_sv = coro_deq (aTHX);
1096 1653
1654 if (expect_true (next_sv))
1655 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1661 else
1662 {
1663 next->flags &= ~CF_READY;
1664 --coro_nready;
1665
1666 prepare_schedule_to (aTHX_ ta, next);
1667 break;
1668 }
1669 }
1670 else
1671 {
1097 /* nothing to schedule: call the idle handler */ 1672 /* nothing to schedule: call the idle handler */
1098 if (!next_sv) 1673 dSP;
1674
1675 ENTER;
1676 SAVETMPS;
1677
1678 PUSHMARK (SP);
1679 PUTBACK;
1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1681
1682 FREETMPS;
1683 LEAVE;
1684 }
1685 }
1686}
1687
1688INLINE void
1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1690{
1691 api_ready (aTHX_ coro_current);
1692 prepare_schedule (aTHX_ ta);
1693}
1694
1695INLINE void
1696prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1697{
1698 SV *prev = SvRV (coro_current);
1699
1700 if (coro_nready)
1701 {
1702 prepare_schedule (aTHX_ ta);
1703 api_ready (aTHX_ prev);
1704 }
1705 else
1706 prepare_nop (aTHX_ ta);
1707}
1708
1709static void
1710api_schedule (pTHX)
1711{
1712 struct coro_transfer_args ta;
1713
1714 prepare_schedule (aTHX_ &ta);
1715 TRANSFER (ta, 1);
1716}
1717
1718static void
1719api_schedule_to (pTHX_ SV *coro_sv)
1720{
1721 struct coro_transfer_args ta;
1722 struct coro *next = SvSTATE (coro_sv);
1723
1724 SvREFCNT_inc_NN (coro_sv);
1725 prepare_schedule_to (aTHX_ &ta, next);
1726}
1727
1728static int
1729api_cede (pTHX)
1730{
1731 struct coro_transfer_args ta;
1732
1733 prepare_cede (aTHX_ &ta);
1734
1735 if (expect_true (ta.prev != ta.next))
1736 {
1737 TRANSFER (ta, 1);
1738 return 1;
1739 }
1740 else
1741 return 0;
1742}
1743
1744static int
1745api_cede_notself (pTHX)
1746{
1747 if (coro_nready)
1748 {
1749 struct coro_transfer_args ta;
1750
1751 prepare_cede_notself (aTHX_ &ta);
1752 TRANSFER (ta, 1);
1753 return 1;
1754 }
1755 else
1756 return 0;
1757}
1758
1759static void
1760api_trace (pTHX_ SV *coro_sv, int flags)
1761{
1762 struct coro *coro = SvSTATE (coro_sv);
1763
1764 if (coro->flags & CF_RUNNING)
1765 croak ("cannot enable tracing on a running coroutine, caught");
1766
1767 if (flags & CC_TRACE)
1768 {
1769 if (!coro->cctx)
1770 coro->cctx = cctx_new_run ();
1771 else if (!(coro->cctx->flags & CC_TRACE))
1772 croak ("cannot enable tracing on coroutine with custom stack, caught");
1773
1774 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1775 }
1776 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1777 {
1778 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1779
1780 if (coro->flags & CF_RUNNING)
1781 PL_runops = RUNOPS_DEFAULT;
1782 else
1783 coro->slot->runops = RUNOPS_DEFAULT;
1784 }
1785}
1786
1787static void
1788coro_call_on_destroy (pTHX_ struct coro *coro)
1789{
1790 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1791 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1792
1793 if (on_destroyp)
1794 {
1795 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1796
1797 while (AvFILLp (on_destroy) >= 0)
1798 {
1799 dSP; /* don't disturb outer sp */
1800 SV *cb = av_pop (on_destroy);
1801
1802 PUSHMARK (SP);
1803
1804 if (statusp)
1805 {
1806 int i;
1807 AV *status = (AV *)SvRV (*statusp);
1808 EXTEND (SP, AvFILLp (status) + 1);
1809
1810 for (i = 0; i <= AvFILLp (status); ++i)
1811 PUSHs (AvARRAY (status)[i]);
1812 }
1813
1814 PUTBACK;
1815 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1816 }
1817 }
1818}
1819
1820static void
1821slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1822{
1823 int i;
1824 HV *hv = (HV *)SvRV (coro_current);
1825 AV *av = newAV ();
1826
1827 av_extend (av, items - 1);
1828 for (i = 0; i < items; ++i)
1829 av_push (av, SvREFCNT_inc_NN (arg [i]));
1830
1831 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1832
1833 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1834 api_ready (aTHX_ sv_manager);
1835
1836 frame->prepare = prepare_schedule;
1837 frame->check = slf_check_repeat;
1838}
1839
1840/*****************************************************************************/
1841/* async pool handler */
1842
1843static int
1844slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1845{
1846 HV *hv = (HV *)SvRV (coro_current);
1847 struct coro *coro = (struct coro *)frame->data;
1848
1849 if (!coro->invoke_cb)
1850 return 1; /* loop till we have invoke */
1851 else
1852 {
1853 hv_store (hv, "desc", sizeof ("desc") - 1,
1854 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1855
1856 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1857
1858 {
1859 dSP;
1860 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1861 PUTBACK;
1862 }
1863
1864 SvREFCNT_dec (GvAV (PL_defgv));
1865 GvAV (PL_defgv) = coro->invoke_av;
1866 coro->invoke_av = 0;
1867
1868 return 0;
1869 }
1870}
1871
1872static void
1873slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1874{
1875 HV *hv = (HV *)SvRV (coro_current);
1876 struct coro *coro = SvSTATE_hv ((SV *)hv);
1877
1878 if (expect_true (coro->saved_deffh))
1879 {
1880 /* subsequent iteration */
1881 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1882 coro->saved_deffh = 0;
1883
1884 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1885 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1886 {
1887 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1888 coro->invoke_av = newAV ();
1889
1890 frame->prepare = prepare_nop;
1891 }
1892 else
1893 {
1894 av_clear (GvAV (PL_defgv));
1895 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1896
1897 coro->prio = 0;
1898
1899 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1900 api_trace (aTHX_ coro_current, 0);
1901
1902 frame->prepare = prepare_schedule;
1903 av_push (av_async_pool, SvREFCNT_inc (hv));
1904 }
1905 }
1906 else
1907 {
1908 /* first iteration, simply fall through */
1909 frame->prepare = prepare_nop;
1910 }
1911
1912 frame->check = slf_check_pool_handler;
1913 frame->data = (void *)coro;
1914}
1915
1916/*****************************************************************************/
1917/* rouse callback */
1918
1919#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1920
1921static void
1922coro_rouse_callback (pTHX_ CV *cv)
1923{
1924 dXSARGS;
1925 SV *data = (SV *)GENSUB_ARG;
1926
1927 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1928 {
1929 /* first call, set args */
1930 AV *av = newAV ();
1931 SV *coro = SvRV (data);
1932
1933 SvRV_set (data, (SV *)av);
1934 api_ready (aTHX_ coro);
1935 SvREFCNT_dec (coro);
1936
1937 /* better take a full copy of the arguments */
1938 while (items--)
1939 av_store (av, items, newSVsv (ST (items)));
1940 }
1941
1942 XSRETURN_EMPTY;
1943}
1944
1945static int
1946slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1947{
1948 SV *data = (SV *)frame->data;
1949
1950 if (CORO_THROW)
1951 return 0;
1952
1953 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1954 return 1;
1955
1956 /* now push all results on the stack */
1957 {
1958 dSP;
1959 AV *av = (AV *)SvRV (data);
1960 int i;
1961
1962 EXTEND (SP, AvFILLp (av) + 1);
1963 for (i = 0; i <= AvFILLp (av); ++i)
1964 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1965
1966 /* we have stolen the elements, so ste length to zero and free */
1967 AvFILLp (av) = -1;
1968 av_undef (av);
1969
1970 PUTBACK;
1971 }
1972
1973 return 0;
1974}
1975
1976static void
1977slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1978{
1979 SV *cb;
1980
1981 if (items)
1982 cb = arg [0];
1983 else
1984 {
1985 struct coro *coro = SvSTATE_current;
1986
1987 if (!coro->rouse_cb)
1988 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1989
1990 cb = sv_2mortal (coro->rouse_cb);
1991 coro->rouse_cb = 0;
1992 }
1993
1994 if (!SvROK (cb)
1995 || SvTYPE (SvRV (cb)) != SVt_PVCV
1996 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1997 croak ("Coro::rouse_wait called with illegal callback argument,");
1998
1999 {
2000 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2001 SV *data = (SV *)GENSUB_ARG;
2002
2003 frame->data = (void *)data;
2004 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2005 frame->check = slf_check_rouse_wait;
2006 }
2007}
2008
2009static SV *
2010coro_new_rouse_cb (pTHX)
2011{
2012 HV *hv = (HV *)SvRV (coro_current);
2013 struct coro *coro = SvSTATE_hv (hv);
2014 SV *data = newRV_inc ((SV *)hv);
2015 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2016
2017 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2018 SvREFCNT_dec (data); /* magicext increases the refcount */
2019
2020 SvREFCNT_dec (coro->rouse_cb);
2021 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2022
2023 return cb;
2024}
2025
2026/*****************************************************************************/
2027/* schedule-like-function opcode (SLF) */
2028
2029static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2030static const CV *slf_cv;
2031static SV **slf_argv;
2032static int slf_argc, slf_arga; /* count, allocated */
2033static I32 slf_ax; /* top of stack, for restore */
2034
2035/* this restores the stack in the case we patched the entersub, to */
2036/* recreate the stack frame as perl will on following calls */
2037/* since entersub cleared the stack */
2038static OP *
2039pp_restore (pTHX)
2040{
2041 int i;
2042 SV **SP = PL_stack_base + slf_ax;
2043
2044 PUSHMARK (SP);
2045
2046 EXTEND (SP, slf_argc + 1);
2047
2048 for (i = 0; i < slf_argc; ++i)
2049 PUSHs (sv_2mortal (slf_argv [i]));
2050
2051 PUSHs ((SV *)CvGV (slf_cv));
2052
2053 RETURNOP (slf_restore.op_first);
2054}
2055
2056static void
2057slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2058{
2059 SV **arg = (SV **)slf_frame.data;
2060
2061 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2062}
2063
2064static void
2065slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{
2067 if (items != 2)
2068 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2069
2070 frame->prepare = slf_prepare_transfer;
2071 frame->check = slf_check_nop;
2072 frame->data = (void *)arg; /* let's hope it will stay valid */
2073}
2074
2075static void
2076slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2077{
2078 frame->prepare = prepare_schedule;
2079 frame->check = slf_check_nop;
2080}
2081
2082static void
2083slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2084{
2085 struct coro *next = (struct coro *)slf_frame.data;
2086
2087 SvREFCNT_inc_NN (next->hv);
2088 prepare_schedule_to (aTHX_ ta, next);
2089}
2090
2091static void
2092slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093{
2094 if (!items)
2095 croak ("Coro::schedule_to expects a coroutine argument, caught");
2096
2097 frame->data = (void *)SvSTATE (arg [0]);
2098 frame->prepare = slf_prepare_schedule_to;
2099 frame->check = slf_check_nop;
2100}
2101
2102static void
2103slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 api_ready (aTHX_ SvRV (coro_current));
2106
2107 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2108}
2109
2110static void
2111slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 frame->prepare = prepare_cede;
2114 frame->check = slf_check_nop;
2115}
2116
2117static void
2118slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{
2120 frame->prepare = prepare_cede_notself;
2121 frame->check = slf_check_nop;
2122}
2123
2124/*
2125 * these not obviously related functions are all rolled into one
2126 * function to increase chances that they all will call transfer with the same
2127 * stack offset
2128 * SLF stands for "schedule-like-function".
2129 */
2130static OP *
2131pp_slf (pTHX)
2132{
2133 I32 checkmark; /* mark SP to see how many elements check has pushed */
2134
2135 /* set up the slf frame, unless it has already been set-up */
2136 /* the latter happens when a new coro has been started */
2137 /* or when a new cctx was attached to an existing coroutine */
2138 if (expect_true (!slf_frame.prepare))
2139 {
2140 /* first iteration */
2141 dSP;
2142 SV **arg = PL_stack_base + TOPMARK + 1;
2143 int items = SP - arg; /* args without function object */
2144 SV *gv = *sp;
2145
2146 /* do a quick consistency check on the "function" object, and if it isn't */
2147 /* for us, divert to the real entersub */
2148 if (SvTYPE (gv) != SVt_PVGV
2149 || !GvCV (gv)
2150 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2151 return PL_ppaddr[OP_ENTERSUB](aTHX);
2152
2153 if (!(PL_op->op_flags & OPf_STACKED))
2154 {
2155 /* ampersand-form of call, use @_ instead of stack */
2156 AV *av = GvAV (PL_defgv);
2157 arg = AvARRAY (av);
2158 items = AvFILLp (av) + 1;
2159 }
2160
2161 /* now call the init function, which needs to set up slf_frame */
2162 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2163 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2164
2165 /* pop args */
2166 SP = PL_stack_base + POPMARK;
2167
2168 PUTBACK;
2169 }
2170
2171 /* now that we have a slf_frame, interpret it! */
2172 /* we use a callback system not to make the code needlessly */
2173 /* complicated, but so we can run multiple perl coros from one cctx */
2174
2175 do
2176 {
2177 struct coro_transfer_args ta;
2178
2179 slf_frame.prepare (aTHX_ &ta);
2180 TRANSFER (ta, 0);
2181
2182 checkmark = PL_stack_sp - PL_stack_base;
2183 }
2184 while (slf_frame.check (aTHX_ &slf_frame));
2185
2186 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2187
2188 /* exception handling */
2189 if (expect_false (CORO_THROW))
2190 {
2191 SV *exception = sv_2mortal (CORO_THROW);
2192
2193 CORO_THROW = 0;
2194 sv_setsv (ERRSV, exception);
2195 croak (0);
2196 }
2197
2198 /* return value handling - mostly like entersub */
2199 /* make sure we put something on the stack in scalar context */
2200 if (GIMME_V == G_SCALAR)
2201 {
2202 dSP;
2203 SV **bot = PL_stack_base + checkmark;
2204
2205 if (sp == bot) /* too few, push undef */
2206 bot [1] = &PL_sv_undef;
2207 else if (sp != bot + 1) /* too many, take last one */
2208 bot [1] = *sp;
2209
2210 SP = bot + 1;
2211
2212 PUTBACK;
2213 }
2214
2215 return NORMAL;
2216}
2217
2218static void
2219api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2220{
2221 int i;
2222 SV **arg = PL_stack_base + ax;
2223 int items = PL_stack_sp - arg + 1;
2224
2225 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2226
2227 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2228 && PL_op->op_ppaddr != pp_slf)
2229 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2230
2231 CvFLAGS (cv) |= CVf_SLF;
2232 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2233 slf_cv = cv;
2234
2235 /* we patch the op, and then re-run the whole call */
2236 /* we have to put the same argument on the stack for this to work */
2237 /* and this will be done by pp_restore */
2238 slf_restore.op_next = (OP *)&slf_restore;
2239 slf_restore.op_type = OP_CUSTOM;
2240 slf_restore.op_ppaddr = pp_restore;
2241 slf_restore.op_first = PL_op;
2242
2243 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2244
2245 if (PL_op->op_flags & OPf_STACKED)
2246 {
2247 if (items > slf_arga)
2248 {
2249 slf_arga = items;
2250 free (slf_argv);
2251 slf_argv = malloc (slf_arga * sizeof (SV *));
2252 }
2253
2254 slf_argc = items;
2255
2256 for (i = 0; i < items; ++i)
2257 slf_argv [i] = SvREFCNT_inc (arg [i]);
2258 }
2259 else
2260 slf_argc = 0;
2261
2262 PL_op->op_ppaddr = pp_slf;
2263 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2264
2265 PL_op = (OP *)&slf_restore;
2266}
2267
2268/*****************************************************************************/
2269/* PerlIO::cede */
2270
2271typedef struct
2272{
2273 PerlIOBuf base;
2274 NV next, every;
2275} PerlIOCede;
2276
2277static IV
2278PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2279{
2280 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2281
2282 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2283 self->next = nvtime () + self->every;
2284
2285 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2286}
2287
2288static SV *
2289PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2290{
2291 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2292
2293 return newSVnv (self->every);
2294}
2295
2296static IV
2297PerlIOCede_flush (pTHX_ PerlIO *f)
2298{
2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2300 double now = nvtime ();
2301
2302 if (now >= self->next)
2303 {
2304 api_cede (aTHX);
2305 self->next = now + self->every;
2306 }
2307
2308 return PerlIOBuf_flush (aTHX_ f);
2309}
2310
2311static PerlIO_funcs PerlIO_cede =
2312{
2313 sizeof(PerlIO_funcs),
2314 "cede",
2315 sizeof(PerlIOCede),
2316 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2317 PerlIOCede_pushed,
2318 PerlIOBuf_popped,
2319 PerlIOBuf_open,
2320 PerlIOBase_binmode,
2321 PerlIOCede_getarg,
2322 PerlIOBase_fileno,
2323 PerlIOBuf_dup,
2324 PerlIOBuf_read,
2325 PerlIOBuf_unread,
2326 PerlIOBuf_write,
2327 PerlIOBuf_seek,
2328 PerlIOBuf_tell,
2329 PerlIOBuf_close,
2330 PerlIOCede_flush,
2331 PerlIOBuf_fill,
2332 PerlIOBase_eof,
2333 PerlIOBase_error,
2334 PerlIOBase_clearerr,
2335 PerlIOBase_setlinebuf,
2336 PerlIOBuf_get_base,
2337 PerlIOBuf_bufsiz,
2338 PerlIOBuf_get_ptr,
2339 PerlIOBuf_get_cnt,
2340 PerlIOBuf_set_ptrcnt,
2341};
2342
2343/*****************************************************************************/
2344/* Coro::Semaphore & Coro::Signal */
2345
2346static SV *
2347coro_waitarray_new (pTHX_ int count)
2348{
2349 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2350 AV *av = newAV ();
2351 SV **ary;
2352
2353 /* unfortunately, building manually saves memory */
2354 Newx (ary, 2, SV *);
2355 AvALLOC (av) = ary;
2356 /*AvARRAY (av) = ary;*/
2357 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2358 AvMAX (av) = 1;
2359 AvFILLp (av) = 0;
2360 ary [0] = newSViv (count);
2361
2362 return newRV_noinc ((SV *)av);
2363}
2364
2365/* semaphore */
2366
2367static void
2368coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2369{
2370 SV *count_sv = AvARRAY (av)[0];
2371 IV count = SvIVX (count_sv);
2372
2373 count += adjust;
2374 SvIVX (count_sv) = count;
2375
2376 /* now wake up as many waiters as are expected to lock */
2377 while (count > 0 && AvFILLp (av) > 0)
2378 {
2379 SV *cb;
2380
2381 /* swap first two elements so we can shift a waiter */
2382 AvARRAY (av)[0] = AvARRAY (av)[1];
2383 AvARRAY (av)[1] = count_sv;
2384 cb = av_shift (av);
2385
2386 if (SvOBJECT (cb))
2387 {
2388 api_ready (aTHX_ cb);
2389 --count;
2390 }
2391 else if (SvTYPE (cb) == SVt_PVCV)
1099 { 2392 {
1100 dSP; 2393 dSP;
1101 UNLOCK;
1102
1103 ENTER;
1104 SAVETMPS;
1105
1106 PUSHMARK (SP); 2394 PUSHMARK (SP);
2395 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1107 PUTBACK; 2396 PUTBACK;
1108 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 2397 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1109
1110 FREETMPS;
1111 LEAVE;
1112 continue;
1113 } 2398 }
1114 2399
1115 ta->next = SvSTATE (next_sv); 2400 SvREFCNT_dec (cb);
2401 }
2402}
1116 2403
1117 /* cannot transfer to destroyed coros, skip and look for next */ 2404static void
1118 if (ta->next->flags & CF_DESTROYED) 2405coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2406{
2407 /* call $sem->adjust (0) to possibly wake up some other waiters */
2408 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2409}
2410
2411static int
2412slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2413{
2414 AV *av = (AV *)frame->data;
2415 SV *count_sv = AvARRAY (av)[0];
2416
2417 /* if we are about to throw, don't actually acquire the lock, just throw */
2418 if (CORO_THROW)
2419 return 0;
2420 else if (SvIVX (count_sv) > 0)
2421 {
2422 SvSTATE_current->on_destroy = 0;
2423
2424 if (acquire)
2425 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2426 else
2427 coro_semaphore_adjust (aTHX_ av, 0);
2428
2429 return 0;
2430 }
2431 else
2432 {
2433 int i;
2434 /* if we were woken up but can't down, we look through the whole */
2435 /* waiters list and only add us if we aren't in there already */
2436 /* this avoids some degenerate memory usage cases */
2437
2438 for (i = 1; i <= AvFILLp (av); ++i)
2439 if (AvARRAY (av)[i] == SvRV (coro_current))
2440 return 1;
2441
2442 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2443 return 1;
2444 }
2445}
2446
2447static int
2448slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2449{
2450 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2451}
2452
2453static int
2454slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2455{
2456 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2457}
2458
2459static void
2460slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2461{
2462 AV *av = (AV *)SvRV (arg [0]);
2463
2464 if (SvIVX (AvARRAY (av)[0]) > 0)
2465 {
2466 frame->data = (void *)av;
2467 frame->prepare = prepare_nop;
2468 }
2469 else
2470 {
2471 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2472
2473 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2474 frame->prepare = prepare_schedule;
2475
2476 /* to avoid race conditions when a woken-up coro gets terminated */
2477 /* we arrange for a temporary on_destroy that calls adjust (0) */
2478 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2479 }
2480}
2481
2482static void
2483slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2484{
2485 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2486 frame->check = slf_check_semaphore_down;
2487}
2488
2489static void
2490slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2491{
2492 if (items >= 2)
2493 {
2494 /* callback form */
2495 AV *av = (AV *)SvRV (arg [0]);
2496 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2497
2498 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2499
2500 if (SvIVX (AvARRAY (av)[0]) > 0)
2501 coro_semaphore_adjust (aTHX_ av, 0);
2502
2503 frame->prepare = prepare_nop;
2504 frame->check = slf_check_nop;
2505 }
2506 else
2507 {
2508 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2509 frame->check = slf_check_semaphore_wait;
2510 }
2511}
2512
2513/* signal */
2514
2515static void
2516coro_signal_wake (pTHX_ AV *av, int count)
2517{
2518 SvIVX (AvARRAY (av)[0]) = 0;
2519
2520 /* now signal count waiters */
2521 while (count > 0 && AvFILLp (av) > 0)
2522 {
2523 SV *cb;
2524
2525 /* swap first two elements so we can shift a waiter */
2526 cb = AvARRAY (av)[0];
2527 AvARRAY (av)[0] = AvARRAY (av)[1];
2528 AvARRAY (av)[1] = cb;
2529
2530 cb = av_shift (av);
2531
2532 api_ready (aTHX_ cb);
2533 sv_setiv (cb, 0); /* signal waiter */
2534 SvREFCNT_dec (cb);
2535
2536 --count;
2537 }
2538}
2539
2540static int
2541slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2542{
2543 /* if we are about to throw, also stop waiting */
2544 return SvROK ((SV *)frame->data) && !CORO_THROW;
2545}
2546
2547static void
2548slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549{
2550 AV *av = (AV *)SvRV (arg [0]);
2551
2552 if (SvIVX (AvARRAY (av)[0]))
2553 {
2554 SvIVX (AvARRAY (av)[0]) = 0;
2555 frame->prepare = prepare_nop;
2556 frame->check = slf_check_nop;
2557 }
2558 else
2559 {
2560 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2561
2562 av_push (av, waiter);
2563
2564 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2565 frame->prepare = prepare_schedule;
2566 frame->check = slf_check_signal_wait;
2567 }
2568}
2569
2570/*****************************************************************************/
2571/* Coro::AIO */
2572
2573#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2574
2575/* helper storage struct */
2576struct io_state
2577{
2578 int errorno;
2579 I32 laststype; /* U16 in 5.10.0 */
2580 int laststatval;
2581 Stat_t statcache;
2582};
2583
2584static void
2585coro_aio_callback (pTHX_ CV *cv)
2586{
2587 dXSARGS;
2588 AV *state = (AV *)GENSUB_ARG;
2589 SV *coro = av_pop (state);
2590 SV *data_sv = newSV (sizeof (struct io_state));
2591
2592 av_extend (state, items - 1);
2593
2594 sv_upgrade (data_sv, SVt_PV);
2595 SvCUR_set (data_sv, sizeof (struct io_state));
2596 SvPOK_only (data_sv);
2597
2598 {
2599 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2600
2601 data->errorno = errno;
2602 data->laststype = PL_laststype;
2603 data->laststatval = PL_laststatval;
2604 data->statcache = PL_statcache;
2605 }
2606
2607 /* now build the result vector out of all the parameters and the data_sv */
2608 {
2609 int i;
2610
2611 for (i = 0; i < items; ++i)
2612 av_push (state, SvREFCNT_inc_NN (ST (i)));
2613 }
2614
2615 av_push (state, data_sv);
2616
2617 api_ready (aTHX_ coro);
2618 SvREFCNT_dec (coro);
2619 SvREFCNT_dec ((AV *)state);
2620}
2621
2622static int
2623slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2624{
2625 AV *state = (AV *)frame->data;
2626
2627 /* if we are about to throw, return early */
2628 /* this does not cancel the aio request, but at least */
2629 /* it quickly returns */
2630 if (CORO_THROW)
2631 return 0;
2632
2633 /* one element that is an RV? repeat! */
2634 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2635 return 1;
2636
2637 /* restore status */
2638 {
2639 SV *data_sv = av_pop (state);
2640 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2641
2642 errno = data->errorno;
2643 PL_laststype = data->laststype;
2644 PL_laststatval = data->laststatval;
2645 PL_statcache = data->statcache;
2646
2647 SvREFCNT_dec (data_sv);
2648 }
2649
2650 /* push result values */
2651 {
2652 dSP;
2653 int i;
2654
2655 EXTEND (SP, AvFILLp (state) + 1);
2656 for (i = 0; i <= AvFILLp (state); ++i)
2657 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2658
2659 PUTBACK;
2660 }
2661
2662 return 0;
2663}
2664
2665static void
2666slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2667{
2668 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2669 SV *coro_hv = SvRV (coro_current);
2670 struct coro *coro = SvSTATE_hv (coro_hv);
2671
2672 /* put our coroutine id on the state arg */
2673 av_push (state, SvREFCNT_inc_NN (coro_hv));
2674
2675 /* first see whether we have a non-zero priority and set it as AIO prio */
2676 if (coro->prio)
2677 {
2678 dSP;
2679
2680 static SV *prio_cv;
2681 static SV *prio_sv;
2682
2683 if (expect_false (!prio_cv))
1119 { 2684 {
1120 UNLOCK; 2685 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
1121 SvREFCNT_dec (next_sv); 2686 prio_sv = newSViv (0);
1122 /* coro_nready is already taken care of by destroy */
1123 continue;
1124 } 2687 }
1125 2688
1126 --coro_nready; 2689 PUSHMARK (SP);
1127 UNLOCK; 2690 sv_setiv (prio_sv, coro->prio);
1128 break; 2691 XPUSHs (prio_sv);
1129 }
1130 2692
1131 /* free this only after the transfer */ 2693 PUTBACK;
1132 prev_sv = SvRV (coro_current); 2694 call_sv (prio_cv, G_VOID | G_DISCARD);
1133 SvRV_set (coro_current, next_sv);
1134 ta->prev = SvSTATE (prev_sv);
1135
1136 assert (ta->next->flags & CF_READY);
1137 ta->next->flags &= ~CF_READY;
1138
1139 LOCK;
1140 free_coro_mortal (aTHX);
1141 coro_mortal = prev_sv;
1142 UNLOCK;
1143}
1144
1145static void
1146prepare_cede (pTHX_ struct transfer_args *ta)
1147{
1148 api_ready (coro_current);
1149 prepare_schedule (aTHX_ ta);
1150}
1151
1152static int
1153prepare_cede_notself (pTHX_ struct transfer_args *ta)
1154{
1155 if (coro_nready)
1156 { 2695 }
1157 SV *prev = SvRV (coro_current); 2696
1158 prepare_schedule (aTHX_ ta); 2697 /* now call the original request */
1159 api_ready (prev); 2698 {
1160 return 1; 2699 dSP;
2700 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2701 int i;
2702
2703 PUSHMARK (SP);
2704
2705 /* first push all args to the stack */
2706 EXTEND (SP, items + 1);
2707
2708 for (i = 0; i < items; ++i)
2709 PUSHs (arg [i]);
2710
2711 /* now push the callback closure */
2712 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2713
2714 /* now call the AIO function - we assume our request is uncancelable */
2715 PUTBACK;
2716 call_sv ((SV *)req, G_VOID | G_DISCARD);
1161 } 2717 }
1162 else
1163 return 0;
1164}
1165 2718
1166static void 2719 /* now that the requets is going, we loop toll we have a result */
1167api_schedule (void) 2720 frame->data = (void *)state;
1168{ 2721 frame->prepare = prepare_schedule;
1169 dTHX; 2722 frame->check = slf_check_aio_req;
1170 struct transfer_args ta;
1171
1172 prepare_schedule (aTHX_ &ta);
1173 TRANSFER (ta);
1174} 2723}
1175 2724
1176static int 2725static void
1177api_cede (void) 2726coro_aio_req_xs (pTHX_ CV *cv)
1178{ 2727{
1179 dTHX; 2728 dXSARGS;
1180 struct transfer_args ta;
1181 2729
1182 prepare_cede (aTHX_ &ta); 2730 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1183 2731
1184 if (ta.prev != ta.next) 2732 XSRETURN_EMPTY;
1185 {
1186 TRANSFER (ta);
1187 return 1;
1188 }
1189 else
1190 return 0;
1191} 2733}
1192 2734
1193static int 2735/*****************************************************************************/
1194api_cede_notself (void)
1195{
1196 dTHX;
1197 struct transfer_args ta;
1198 2736
1199 if (prepare_cede_notself (aTHX_ &ta)) 2737#if CORO_CLONE
1200 { 2738# include "clone.c"
1201 TRANSFER (ta); 2739#endif
1202 return 1;
1203 }
1204 else
1205 return 0;
1206}
1207 2740
1208MODULE = Coro::State PACKAGE = Coro::State 2741MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1209 2742
1210PROTOTYPES: DISABLE 2743PROTOTYPES: DISABLE
1211 2744
1212BOOT: 2745BOOT:
1213{ 2746{
1214#ifdef USE_ITHREADS 2747#ifdef USE_ITHREADS
1215 MUTEX_INIT (&coro_mutex); 2748# if CORO_PTHREAD
2749 coro_thx = PERL_GET_CONTEXT;
2750# endif
1216#endif 2751#endif
1217 BOOT_PAGESIZE; 2752 BOOT_PAGESIZE;
1218 2753
2754 cctx_current = cctx_new_empty ();
2755
2756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2758
2759 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2760 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2761 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2762
2763 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2764 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2765 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2766
1219 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2767 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1220 2768
1221 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2769 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1222 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 2770 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1223 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1224 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1225 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1226 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 2771 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1227 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2772 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1228 2773
1229 main_mainstack = PL_mainstack; 2774 main_mainstack = PL_mainstack;
1230 main_top_env = PL_top_env; 2775 main_top_env = PL_top_env;
1231 2776
1232 while (main_top_env->je_prev) 2777 while (main_top_env->je_prev)
1233 main_top_env = main_top_env->je_prev; 2778 main_top_env = main_top_env->je_prev;
1234 2779
2780 {
2781 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2782
2783 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2784 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2785
2786 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2787 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2788 }
2789
1235 coroapi.ver = CORO_API_VERSION; 2790 coroapi.ver = CORO_API_VERSION;
2791 coroapi.rev = CORO_API_REVISION;
2792
1236 coroapi.transfer = api_transfer; 2793 coroapi.transfer = api_transfer;
2794
2795 coroapi.sv_state = SvSTATE_;
2796 coroapi.execute_slf = api_execute_slf;
2797 coroapi.prepare_nop = prepare_nop;
2798 coroapi.prepare_schedule = prepare_schedule;
2799 coroapi.prepare_cede = prepare_cede;
2800 coroapi.prepare_cede_notself = prepare_cede_notself;
2801
2802 {
2803 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2804
2805 if (!svp) croak ("Time::HiRes is required");
2806 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2807
2808 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2809 }
1237 2810
1238 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2811 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1239} 2812}
1240 2813
1241SV * 2814SV *
1242new (char *klass, ...) 2815new (char *klass, ...)
2816 ALIAS:
2817 Coro::new = 1
1243 CODE: 2818 CODE:
1244{ 2819{
1245 struct coro *coro; 2820 struct coro *coro;
2821 MAGIC *mg;
1246 HV *hv; 2822 HV *hv;
2823 CV *cb;
1247 int i; 2824 int i;
1248 2825
2826 if (items > 1)
2827 {
2828 cb = coro_sv_2cv (aTHX_ ST (1));
2829
2830 if (!ix)
2831 {
2832 if (CvISXSUB (cb))
2833 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2834
2835 if (!CvROOT (cb))
2836 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2837 }
2838 }
2839
1249 Newz (0, coro, 1, struct coro); 2840 Newz (0, coro, 1, struct coro);
1250 coro->args = newAV (); 2841 coro->args = newAV ();
1251 coro->save = CORO_SAVE_DEF;
1252 coro->flags = CF_NEW; 2842 coro->flags = CF_NEW;
1253 2843
1254 if (coro_first) coro_first->prev = coro; 2844 if (coro_first) coro_first->prev = coro;
1255 coro->next = coro_first; 2845 coro->next = coro_first;
1256 coro_first = coro; 2846 coro_first = coro;
1257 2847
1258 coro->hv = hv = newHV (); 2848 coro->hv = hv = newHV ();
1259 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2849 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2850 mg->mg_flags |= MGf_DUP;
1260 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2851 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1261 2852
2853 if (items > 1)
2854 {
2855 av_extend (coro->args, items - 1 + ix - 1);
2856
2857 if (ix)
2858 {
2859 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2860 cb = cv_coro_run;
2861 }
2862
2863 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2864
1262 for (i = 1; i < items; i++) 2865 for (i = 2; i < items; i++)
1263 av_push (coro->args, newSVsv (ST (i))); 2866 av_push (coro->args, newSVsv (ST (i)));
2867 }
1264} 2868}
1265 OUTPUT: 2869 OUTPUT:
1266 RETVAL 2870 RETVAL
1267 2871
1268int 2872void
1269save (SV *coro, int new_save = -1) 2873transfer (...)
2874 PROTOTYPE: $$
1270 CODE: 2875 CODE:
1271 RETVAL = api_save (coro, new_save); 2876 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1272 OUTPUT:
1273 RETVAL
1274
1275int
1276save_also (SV *coro_sv, int save_also)
1277 CODE:
1278{
1279 struct coro *coro = SvSTATE (coro_sv);
1280 RETVAL = coro->save;
1281 coro->save |= save_also;
1282}
1283 OUTPUT:
1284 RETVAL
1285
1286void
1287_set_stacklevel (...)
1288 ALIAS:
1289 Coro::State::transfer = 1
1290 Coro::schedule = 2
1291 Coro::cede = 3
1292 Coro::cede_notself = 4
1293 CODE:
1294{
1295 struct transfer_args ta;
1296
1297 switch (ix)
1298 {
1299 case 0:
1300 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1301 ta.next = 0;
1302 break;
1303
1304 case 1:
1305 if (items != 2)
1306 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1307
1308 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1309 break;
1310
1311 case 2:
1312 prepare_schedule (aTHX_ &ta);
1313 break;
1314
1315 case 3:
1316 prepare_cede (aTHX_ &ta);
1317 break;
1318
1319 case 4:
1320 if (!prepare_cede_notself (aTHX_ &ta))
1321 XSRETURN_EMPTY;
1322
1323 break;
1324 }
1325
1326 BARRIER;
1327 TRANSFER (ta);
1328
1329 if (GIMME_V != G_VOID && ta.next != ta.prev)
1330 XSRETURN_YES;
1331}
1332 2877
1333bool 2878bool
1334_destroy (SV *coro_sv) 2879_destroy (SV *coro_sv)
1335 CODE: 2880 CODE:
1336 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2881 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1337 OUTPUT: 2882 OUTPUT:
1338 RETVAL 2883 RETVAL
1339 2884
1340void 2885void
1341_exit (code) 2886_exit (int code)
1342 int code
1343 PROTOTYPE: $ 2887 PROTOTYPE: $
1344 CODE: 2888 CODE:
1345 _exit (code); 2889 _exit (code);
1346 2890
2891SV *
2892clone (Coro::State coro)
2893 CODE:
2894{
2895#if CORO_CLONE
2896 struct coro *ncoro = coro_clone (coro);
2897 MAGIC *mg;
2898 /* TODO: too much duplication */
2899 ncoro->hv = newHV ();
2900 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2901 mg->mg_flags |= MGf_DUP;
2902 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2903#else
2904 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2905#endif
2906}
2907 OUTPUT:
2908 RETVAL
2909
1347int 2910int
1348cctx_stacksize (int new_stacksize = 0) 2911cctx_stacksize (int new_stacksize = 0)
2912 PROTOTYPE: ;$
1349 CODE: 2913 CODE:
1350 RETVAL = coro_stacksize; 2914 RETVAL = cctx_stacksize;
1351 if (new_stacksize) 2915 if (new_stacksize)
2916 {
1352 coro_stacksize = new_stacksize; 2917 cctx_stacksize = new_stacksize;
2918 ++cctx_gen;
2919 }
1353 OUTPUT: 2920 OUTPUT:
1354 RETVAL 2921 RETVAL
1355 2922
1356int 2923int
2924cctx_max_idle (int max_idle = 0)
2925 PROTOTYPE: ;$
2926 CODE:
2927 RETVAL = cctx_max_idle;
2928 if (max_idle > 1)
2929 cctx_max_idle = max_idle;
2930 OUTPUT:
2931 RETVAL
2932
2933int
1357cctx_count () 2934cctx_count ()
2935 PROTOTYPE:
1358 CODE: 2936 CODE:
1359 RETVAL = cctx_count; 2937 RETVAL = cctx_count;
1360 OUTPUT: 2938 OUTPUT:
1361 RETVAL 2939 RETVAL
1362 2940
1363int 2941int
1364cctx_idle () 2942cctx_idle ()
2943 PROTOTYPE:
1365 CODE: 2944 CODE:
1366 RETVAL = cctx_idle; 2945 RETVAL = cctx_idle;
1367 OUTPUT: 2946 OUTPUT:
1368 RETVAL 2947 RETVAL
1369 2948
1370void 2949void
1371list () 2950list ()
2951 PROTOTYPE:
1372 PPCODE: 2952 PPCODE:
1373{ 2953{
1374 struct coro *coro; 2954 struct coro *coro;
1375 for (coro = coro_first; coro; coro = coro->next) 2955 for (coro = coro_first; coro; coro = coro->next)
1376 if (coro->hv) 2956 if (coro->hv)
1377 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 2957 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1378} 2958}
1379 2959
1380void 2960void
1381_eval (Coro::State coro, SV *coderef) 2961call (Coro::State coro, SV *coderef)
2962 ALIAS:
2963 eval = 1
1382 CODE: 2964 CODE:
1383{ 2965{
1384 if (coro->mainstack) 2966 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1385 { 2967 {
1386 struct coro temp; 2968 struct coro temp;
1387 Zero (&temp, 1, struct coro);
1388 temp.save = CORO_SAVE_ALL;
1389 2969
1390 if (!(coro->flags & CF_RUNNING)) 2970 if (!(coro->flags & CF_RUNNING))
1391 { 2971 {
2972 PUTBACK;
1392 save_perl (aTHX_ &temp); 2973 save_perl (aTHX_ &temp);
1393 load_perl (aTHX_ coro); 2974 load_perl (aTHX_ coro);
1394 } 2975 }
1395 2976
1396 { 2977 {
1397 dSP; 2978 dSP;
1398 ENTER; 2979 ENTER;
1399 SAVETMPS; 2980 SAVETMPS;
2981 PUTBACK;
2982 PUSHSTACK;
1400 PUSHMARK (SP); 2983 PUSHMARK (SP);
1401 PUTBACK; 2984
2985 if (ix)
2986 eval_sv (coderef, 0);
2987 else
1402 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2988 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2989
2990 POPSTACK;
1403 SPAGAIN; 2991 SPAGAIN;
1404 FREETMPS; 2992 FREETMPS;
1405 LEAVE; 2993 LEAVE;
1406 PUTBACK; 2994 PUTBACK;
1407 } 2995 }
1408 2996
1409 if (!(coro->flags & CF_RUNNING)) 2997 if (!(coro->flags & CF_RUNNING))
1410 { 2998 {
1411 save_perl (aTHX_ coro); 2999 save_perl (aTHX_ coro);
1412 load_perl (aTHX_ &temp); 3000 load_perl (aTHX_ &temp);
3001 SPAGAIN;
1413 } 3002 }
1414 } 3003 }
1415} 3004}
1416 3005
1417SV * 3006SV *
1418is_ready (Coro::State coro) 3007is_ready (Coro::State coro)
1419 PROTOTYPE: $ 3008 PROTOTYPE: $
1420 ALIAS: 3009 ALIAS:
1421 is_ready = CF_READY 3010 is_ready = CF_READY
… …
1425 CODE: 3014 CODE:
1426 RETVAL = boolSV (coro->flags & ix); 3015 RETVAL = boolSV (coro->flags & ix);
1427 OUTPUT: 3016 OUTPUT:
1428 RETVAL 3017 RETVAL
1429 3018
1430IV 3019void
3020throw (Coro::State self, SV *throw = &PL_sv_undef)
3021 PROTOTYPE: $;$
3022 CODE:
3023{
3024 struct coro *current = SvSTATE_current;
3025 SV **throwp = self == current ? &CORO_THROW : &self->except;
3026 SvREFCNT_dec (*throwp);
3027 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3028}
3029
3030void
3031api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3032 PROTOTYPE: $;$
3033 C_ARGS: aTHX_ coro, flags
3034
3035SV *
3036has_cctx (Coro::State coro)
3037 PROTOTYPE: $
3038 CODE:
3039 /* maybe manage the running flag differently */
3040 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
3041 OUTPUT:
3042 RETVAL
3043
3044int
3045is_traced (Coro::State coro)
3046 PROTOTYPE: $
3047 CODE:
3048 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
3049 OUTPUT:
3050 RETVAL
3051
3052UV
1431rss (Coro::State coro) 3053rss (Coro::State coro)
1432 PROTOTYPE: $ 3054 PROTOTYPE: $
3055 ALIAS:
3056 usecount = 1
1433 CODE: 3057 CODE:
1434 RETVAL = coro_rss (coro); 3058 switch (ix)
3059 {
3060 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3061 case 1: RETVAL = coro->usecount; break;
3062 }
1435 OUTPUT: 3063 OUTPUT:
1436 RETVAL 3064 RETVAL
1437 3065
3066void
3067force_cctx ()
3068 PROTOTYPE:
3069 CODE:
3070 cctx_current->idle_sp = 0;
3071
3072void
3073swap_defsv (Coro::State self)
3074 PROTOTYPE: $
3075 ALIAS:
3076 swap_defav = 1
3077 CODE:
3078 if (!self->slot)
3079 croak ("cannot swap state with coroutine that has no saved state,");
3080 else
3081 {
3082 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3083 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3084
3085 SV *tmp = *src; *src = *dst; *dst = tmp;
3086 }
3087
1438 3088
1439MODULE = Coro::State PACKAGE = Coro 3089MODULE = Coro::State PACKAGE = Coro
1440 3090
1441BOOT: 3091BOOT:
1442{ 3092{
1443 int i; 3093 int i;
1444 3094
3095 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3096 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3097 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3098 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3099 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3100 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3101 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3102 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3103
3104 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3105 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3106 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3107 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
3108
1445 coro_stash = gv_stashpv ("Coro", TRUE); 3109 coro_stash = gv_stashpv ("Coro", TRUE);
1446 3110
1447 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1448 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1449 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3113 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1450 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3114 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1451 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3115 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1452 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3116 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1453 3117
1454 coro_current = get_sv ("Coro::current", FALSE);
1455 SvREADONLY_on (coro_current);
1456
1457 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3118 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1458 coro_ready[i] = newAV (); 3119 coro_ready[i] = newAV ();
1459 3120
1460 { 3121 {
1461 SV *sv = perl_get_sv("Coro::API", 1); 3122 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1462 3123
1463 coroapi.schedule = api_schedule; 3124 coroapi.schedule = api_schedule;
1464 coroapi.save = api_save; 3125 coroapi.schedule_to = api_schedule_to;
1465 coroapi.cede = api_cede; 3126 coroapi.cede = api_cede;
1466 coroapi.cede_notself = api_cede_notself; 3127 coroapi.cede_notself = api_cede_notself;
1467 coroapi.ready = api_ready; 3128 coroapi.ready = api_ready;
1468 coroapi.is_ready = api_is_ready; 3129 coroapi.is_ready = api_is_ready;
1469 coroapi.nready = &coro_nready; 3130 coroapi.nready = coro_nready;
1470 coroapi.current = coro_current; 3131 coroapi.current = coro_current;
1471 3132
1472 GCoroAPI = &coroapi; 3133 /*GCoroAPI = &coroapi;*/
1473 sv_setiv (sv, (IV)&coroapi); 3134 sv_setiv (sv, (IV)&coroapi);
1474 SvREADONLY_on (sv); 3135 SvREADONLY_on (sv);
1475 } 3136 }
1476} 3137}
3138
3139void
3140terminate (...)
3141 CODE:
3142 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3143
3144void
3145schedule (...)
3146 CODE:
3147 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3148
3149void
3150schedule_to (...)
3151 CODE:
3152 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3153
3154void
3155cede_to (...)
3156 CODE:
3157 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3158
3159void
3160cede (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_cede);
3163
3164void
3165cede_notself (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3168
3169void
3170_cancel (Coro::State self)
3171 CODE:
3172 coro_state_destroy (aTHX_ self);
3173 coro_call_on_destroy (aTHX_ self);
1477 3174
1478void 3175void
1479_set_current (SV *current) 3176_set_current (SV *current)
1480 PROTOTYPE: $ 3177 PROTOTYPE: $
1481 CODE: 3178 CODE:
1482 SvREFCNT_dec (SvRV (coro_current)); 3179 SvREFCNT_dec (SvRV (coro_current));
1483 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3180 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3181
3182void
3183_set_readyhook (SV *hook)
3184 PROTOTYPE: $
3185 CODE:
3186 SvREFCNT_dec (coro_readyhook);
3187 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1484 3188
1485int 3189int
1486prio (Coro::State coro, int newprio = 0) 3190prio (Coro::State coro, int newprio = 0)
3191 PROTOTYPE: $;$
1487 ALIAS: 3192 ALIAS:
1488 nice = 1 3193 nice = 1
1489 CODE: 3194 CODE:
1490{ 3195{
1491 RETVAL = coro->prio; 3196 RETVAL = coro->prio;
… …
1506 3211
1507SV * 3212SV *
1508ready (SV *self) 3213ready (SV *self)
1509 PROTOTYPE: $ 3214 PROTOTYPE: $
1510 CODE: 3215 CODE:
1511 RETVAL = boolSV (api_ready (self)); 3216 RETVAL = boolSV (api_ready (aTHX_ self));
1512 OUTPUT: 3217 OUTPUT:
1513 RETVAL 3218 RETVAL
1514 3219
1515int 3220int
1516nready (...) 3221nready (...)
… …
1518 CODE: 3223 CODE:
1519 RETVAL = coro_nready; 3224 RETVAL = coro_nready;
1520 OUTPUT: 3225 OUTPUT:
1521 RETVAL 3226 RETVAL
1522 3227
1523MODULE = Coro::State PACKAGE = Coro::AIO 3228void
3229_pool_handler (...)
3230 CODE:
3231 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3232
3233void
3234async_pool (SV *cv, ...)
3235 PROTOTYPE: &@
3236 PPCODE:
3237{
3238 HV *hv = (HV *)av_pop (av_async_pool);
3239 AV *av = newAV ();
3240 SV *cb = ST (0);
3241 int i;
3242
3243 av_extend (av, items - 2);
3244 for (i = 1; i < items; ++i)
3245 av_push (av, SvREFCNT_inc_NN (ST (i)));
3246
3247 if ((SV *)hv == &PL_sv_undef)
3248 {
3249 PUSHMARK (SP);
3250 EXTEND (SP, 2);
3251 PUSHs (sv_Coro);
3252 PUSHs ((SV *)cv_pool_handler);
3253 PUTBACK;
3254 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3255 SPAGAIN;
3256
3257 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3258 }
3259
3260 {
3261 struct coro *coro = SvSTATE_hv (hv);
3262
3263 assert (!coro->invoke_cb);
3264 assert (!coro->invoke_av);
3265 coro->invoke_cb = SvREFCNT_inc (cb);
3266 coro->invoke_av = av;
3267 }
3268
3269 api_ready (aTHX_ (SV *)hv);
3270
3271 if (GIMME_V != G_VOID)
3272 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3273 else
3274 SvREFCNT_dec (hv);
3275}
1524 3276
1525SV * 3277SV *
1526_get_state () 3278rouse_cb ()
3279 PROTOTYPE:
1527 CODE: 3280 CODE:
1528{ 3281 RETVAL = coro_new_rouse_cb (aTHX);
1529 struct io_state *data;
1530
1531 RETVAL = newSV (sizeof (struct io_state));
1532 data = (struct io_state *)SvPVX (RETVAL);
1533 SvCUR_set (RETVAL, sizeof (struct io_state));
1534 SvPOK_only (RETVAL);
1535
1536 data->errorno = errno;
1537 data->laststype = PL_laststype;
1538 data->laststatval = PL_laststatval;
1539 data->statcache = PL_statcache;
1540}
1541 OUTPUT: 3282 OUTPUT:
1542 RETVAL 3283 RETVAL
1543 3284
1544void 3285void
1545_set_state (char *data_) 3286rouse_wait (...)
1546 PROTOTYPE: $ 3287 PROTOTYPE: ;$
3288 PPCODE:
3289 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3290
3291
3292MODULE = Coro::State PACKAGE = PerlIO::cede
3293
3294BOOT:
3295 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3296
3297
3298MODULE = Coro::State PACKAGE = Coro::Semaphore
3299
3300SV *
3301new (SV *klass, SV *count = 0)
1547 CODE: 3302 CODE:
1548{ 3303 RETVAL = sv_bless (
1549 struct io_state *data = (void *)data_; 3304 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3305 GvSTASH (CvGV (cv))
3306 );
3307 OUTPUT:
3308 RETVAL
1550 3309
1551 errno = data->errorno; 3310# helper for Coro::Channel
1552 PL_laststype = data->laststype; 3311SV *
1553 PL_laststatval = data->laststatval; 3312_alloc (int count)
1554 PL_statcache = data->statcache; 3313 CODE:
1555} 3314 RETVAL = coro_waitarray_new (aTHX_ count);
3315 OUTPUT:
3316 RETVAL
1556 3317
3318SV *
3319count (SV *self)
3320 CODE:
3321 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3322 OUTPUT:
3323 RETVAL
3324
3325void
3326up (SV *self, int adjust = 1)
3327 ALIAS:
3328 adjust = 1
3329 CODE:
3330 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3331
3332void
3333down (...)
3334 CODE:
3335 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3336
3337void
3338wait (...)
3339 CODE:
3340 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3341
3342void
3343try (SV *self)
3344 PPCODE:
3345{
3346 AV *av = (AV *)SvRV (self);
3347 SV *count_sv = AvARRAY (av)[0];
3348 IV count = SvIVX (count_sv);
3349
3350 if (count > 0)
3351 {
3352 --count;
3353 SvIVX (count_sv) = count;
3354 XSRETURN_YES;
3355 }
3356 else
3357 XSRETURN_NO;
3358}
3359
3360void
3361waiters (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 int wcount = AvFILLp (av) + 1 - 1;
3366
3367 if (GIMME_V == G_SCALAR)
3368 XPUSHs (sv_2mortal (newSViv (wcount)));
3369 else
3370 {
3371 int i;
3372 EXTEND (SP, wcount);
3373 for (i = 1; i <= wcount; ++i)
3374 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3375 }
3376}
3377
3378MODULE = Coro::State PACKAGE = Coro::Signal
3379
3380SV *
3381new (SV *klass)
3382 CODE:
3383 RETVAL = sv_bless (
3384 coro_waitarray_new (aTHX_ 0),
3385 GvSTASH (CvGV (cv))
3386 );
3387 OUTPUT:
3388 RETVAL
3389
3390void
3391wait (...)
3392 CODE:
3393 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3394
3395void
3396broadcast (SV *self)
3397 CODE:
3398{
3399 AV *av = (AV *)SvRV (self);
3400 coro_signal_wake (aTHX_ av, AvFILLp (av));
3401}
3402
3403void
3404send (SV *self)
3405 CODE:
3406{
3407 AV *av = (AV *)SvRV (self);
3408
3409 if (AvFILLp (av))
3410 coro_signal_wake (aTHX_ av, 1);
3411 else
3412 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3413}
3414
3415IV
3416awaited (SV *self)
3417 CODE:
3418 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3419 OUTPUT:
3420 RETVAL
3421
3422
3423MODULE = Coro::State PACKAGE = Coro::AnyEvent
3424
3425BOOT:
3426 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3427
3428void
3429_schedule (...)
3430 CODE:
3431{
3432 static int incede;
3433
3434 api_cede_notself (aTHX);
3435
3436 ++incede;
3437 while (coro_nready >= incede && api_cede (aTHX))
3438 ;
3439
3440 sv_setsv (sv_activity, &PL_sv_undef);
3441 if (coro_nready >= incede)
3442 {
3443 PUSHMARK (SP);
3444 PUTBACK;
3445 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3446 }
3447
3448 --incede;
3449}
3450
3451
3452MODULE = Coro::State PACKAGE = Coro::AIO
3453
3454void
3455_register (char *target, char *proto, SV *req)
3456 CODE:
3457{
3458 CV *req_cv = coro_sv_2cv (aTHX_ req);
3459 /* newXSproto doesn't return the CV on 5.8 */
3460 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3461 sv_setpv ((SV *)slf_cv, proto);
3462 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3463}
3464

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