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Comparing Coro/Coro/State.xs (file contents):
Revision 1.245 by root, Mon Sep 22 05:40:21 2008 UTC vs.
Revision 1.324 by root, Sat Nov 22 07:02:28 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
… …
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
63 61
64#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr 63# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
67# endif 65# endif
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 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
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100#ifndef CvISXSUB_on
93/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
94#ifndef CxHASARGS 102#endif
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs 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)
96#endif 108#endif
97 109
98/* 5.8.7 */ 110/* 5.8.7 */
99#ifndef SvRV_set 111#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 126#endif
115 127
116/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
118#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
120 137
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
122 139
123#if __GNUC__ >= 3 140#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
127#else 144#else
128# define attribute(x) 145# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
131#endif 148#endif
132 149
133#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
135 152
136#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
137 154
138#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
139 157
140#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 159# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 161# endif
162#endif
148 163
149/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157 165
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;
158static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 174static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
163static volatile 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 */
164 180
165static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 183static SV *rv_diehook;
168static SV *rv_warnhook; 184static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
170 186
171/* async_pool helper stuff */ 187/* async_pool helper stuff */
172static SV *sv_pool_rss; 188static SV *sv_pool_rss;
173static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
175 195
176/* Coro::AnyEvent */ 196/* Coro::AnyEvent */
177static SV *sv_activity; 197static SV *sv_activity;
178 198
179static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 207 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 209};
190 210
191/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 212typedef struct coro_cctx
213{
193 struct coro_cctx *next; 214 struct coro_cctx *next;
194 215
195 /* the stack */ 216 /* the stack */
196 void *sptr; 217 void *sptr;
197 size_t ssize; 218 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 221 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 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 */
202 JMPENV *top_env; 223 JMPENV *top_env;
203 coro_context cctx; 224 coro_context cctx;
204 225
226 U32 gen;
205#if CORO_USE_VALGRIND 227#if CORO_USE_VALGRIND
206 int valgrind_id; 228 int valgrind_id;
207#endif 229#endif
208 unsigned char flags; 230 unsigned char flags;
209} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
210 236
211enum { 237enum {
212 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
213 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
214 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 242};
217 243
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 245typedef struct
246{
220 SV *defsv; 247 SV *defsv;
221 AV *defav; 248 AV *defav;
222 SV *errsv; 249 SV *errsv;
223 SV *irsgv; 250 SV *irsgv;
224#define VAR(name,type) type name; 251#define VAR(name,type) type name;
… …
228 255
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 257
231/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
232struct coro { 259struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 261 coro_cctx *cctx;
235 262
236 /* process data */ 263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 265 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
239 267
268 CV *startcv; /* the CV to execute */
240 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
244 274
245 /* statistics */ 275 /* statistics */
246 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
247 277
248 /* coro process data */ 278 /* coro process data */
249 int prio; 279 int prio;
250 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
251 282
252 /* async_pool */ 283 /* async_pool */
253 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
254 287
255 /* linked list */ 288 /* linked list */
256 struct coro *next, *prev; 289 struct coro *next, *prev;
257}; 290};
258 291
259typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
260typedef 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 */
261 299
262/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
263 301
264#define PRIO_MAX 3 302#define PRIO_MAX 3
265#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 307#define PRIO_MIN -4
270 308
271/* for Coro.pm */ 309/* for Coro.pm */
272static SV *coro_current; 310static SV *coro_current;
273static SV *coro_readyhook; 311static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
276static struct coro *coro_first; 314static struct coro *coro_first;
315#define coro_nready coroapi.nready
277 316
278/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
279 318
280static SV * 319static SV *
281coro_get_sv (pTHX_ const char *name, int create) 320coro_get_sv (pTHX_ const char *name, int create)
… …
305 get_hv (name, create); 344 get_hv (name, create);
306#endif 345#endif
307 return get_hv (name, create); 346 return get_hv (name, create);
308} 347}
309 348
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
310static AV * 358static AV *
311coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
312{ 360{
313 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
314 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
315 363
316 newpadlist = newAV (); 364 newpadlist = newAV ();
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 370#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 371 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 372 --AvFILLp (padlist);
325 373
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 374 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327 av_store (newpadlist, 1, (SV *)newpad); 375 av_store (newpadlist, 1, (SV *)newpad);
328 376
329 return newpadlist; 377 return newpadlist;
330} 378}
331 379
… …
366 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
367 415
368 return 0; 416 return 0;
369} 417}
370 418
371#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
372#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
373 421
374static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
375 0, 0, 0, 0, 423 0, 0, 0, 0,
376 coro_cv_free 424 coro_cv_free
377}; 425};
378 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
379#define CORO_MAGIC(sv,type) \ 432#define CORO_MAGIC(sv, type) \
380 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
381 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
382 ? SvMAGIC (sv) \
383 : mg_find (sv, type) \
384 : 0 435 : 0)
385 436
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
388 439
389static struct coro * 440INLINE struct coro *
390SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
391{ 442{
392 HV *stash; 443 HV *stash;
393 MAGIC *mg; 444 MAGIC *mg;
394 445
… …
409 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
411} 462}
412 463
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 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))
414 469
415/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
416static void 471static void
417get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
418{ 473{
… …
424 else 479 else
425 { 480 {
426#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
427 /* this is probably cleaner? but also slower! */ 482 /* this is probably cleaner? but also slower! */
428 /* in practise, it seems to be less stable */ 483 /* in practise, it seems to be less stable */
429 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
430 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
431 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
432 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
433#else 488#else
434 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
435#endif 490#endif
436 } 491 }
437} 492}
438 493
439static void 494static void
… …
485 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
486 } 541 }
487 542
488 PUTBACK; 543 PUTBACK;
489 } 544 }
545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
490} 548}
491 549
492static void 550static void
493save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
494{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
495 { 556 {
496 dSP; 557 dSP;
497 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
498 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
499 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
566 #undef VAR 627 #undef VAR
567 } 628 }
568} 629}
569 630
570/* 631/*
571 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
572 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
573 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
574 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
575 */ 636 */
576#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
577# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
578#else 639#else
579static void 640static void
580coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
581{ 642{
582 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
619 680
620/* 681/*
621 * destroy the stacks, the callchain etc... 682 * destroy the stacks, the callchain etc...
622 */ 683 */
623static void 684static void
624coro_destroy_stacks (pTHX) 685coro_destruct_stacks (pTHX)
625{ 686{
626 while (PL_curstackinfo->si_next) 687 while (PL_curstackinfo->si_next)
627 PL_curstackinfo = PL_curstackinfo->si_next; 688 PL_curstackinfo = PL_curstackinfo->si_next;
628 689
629 while (PL_curstackinfo) 690 while (PL_curstackinfo)
… …
645#if !PERL_VERSION_ATLEAST (5,10,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
646 Safefree (PL_retstack); 707 Safefree (PL_retstack);
647#endif 708#endif
648} 709}
649 710
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
650static size_t 720static size_t
651coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
652{ 722{
653 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
654 724
655 if (coro->mainstack) 725 if (coro->mainstack)
656 { 726 {
657 perl_slots tmp_slot;
658 perl_slots *slot;
659
660 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
661 { 728 {
662 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
663 730 CORO_RSS;
664 #define VAR(name,type) slot->name = PL_ ## name;
665 # include "state.h"
666 #undef VAR 731 #undef SYM
667 } 732 }
668 else 733 else
669 slot = coro->slot;
670
671 if (slot)
672 { 734 {
673 rss += sizeof (slot->curstackinfo); 735 #define SYM(sym) coro->slot->sym
674 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
675 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 737 #undef SYM
676 rss += slot->tmps_max * sizeof (SV *);
677 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
678 rss += slot->scopestack_max * sizeof (I32);
679 rss += slot->savestack_max * sizeof (ANY);
680
681#if !PERL_VERSION_ATLEAST (5,10,0)
682 rss += slot->retstack_max * sizeof (OP *);
683#endif
684 } 738 }
685 } 739 }
686 740
687 return rss; 741 return rss;
688} 742}
… …
778 832
779 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
780} 834}
781 835
782static void 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 */
783coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
784{ 859{
785 /* 860 /*
786 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
787 */ 862 */
… …
807 GvSV (PL_defgv) = newSV (0); 882 GvSV (PL_defgv) = newSV (0);
808 GvAV (PL_defgv) = coro->args; coro->args = 0; 883 GvAV (PL_defgv) = coro->args; coro->args = 0;
809 GvSV (PL_errgv) = newSV (0); 884 GvSV (PL_errgv) = newSV (0);
810 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 885 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
811 PL_rs = newSVsv (GvSV (irsgv)); 886 PL_rs = newSVsv (GvSV (irsgv));
812 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 887 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
813 888
814 { 889 {
815 dSP; 890 dSP;
816 LOGOP myop; 891 UNOP myop;
817 892
818 Zero (&myop, 1, LOGOP); 893 Zero (&myop, 1, UNOP);
819 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
820 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
821 897
822 PUSHMARK (SP); 898 PUSHMARK (SP);
823 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
824 PUTBACK; 900 PUTBACK;
825 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
826 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
827 SPAGAIN;
828 } 903 }
829 904
830 /* this newly created coroutine might be run on an existing cctx which most 905 /* this newly created coroutine might be run on an existing cctx which most
831 * likely was suspended in set_stacklevel, called from entersub. 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
832 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
833 * so we ENTER here for symmetry
834 */ 907 */
835 ENTER; 908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
836} 909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
837 910
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
838static void 923static void
839coro_destroy (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
840{ 925{
841 if (!IN_DESTRUCT) 926 if (!IN_DESTRUCT)
842 { 927 {
843 /* restore all saved variables and stuff */ 928 /* restore all saved variables and stuff */
844 LEAVE_SCOPE (0); 929 LEAVE_SCOPE (0);
… …
864 949
865 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
866 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
867 952
868 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
869 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
870 957
871 coro_destroy_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
872} 959}
873 960
874static void 961INLINE void
875free_coro_mortal (pTHX) 962free_coro_mortal (pTHX)
876{ 963{
877 if (expect_true (coro_mortal)) 964 if (expect_true (coro_mortal))
878 { 965 {
879 SvREFCNT_dec (coro_mortal); 966 SvREFCNT_dec (coro_mortal);
… …
884static int 971static int
885runops_trace (pTHX) 972runops_trace (pTHX)
886{ 973{
887 COP *oldcop = 0; 974 COP *oldcop = 0;
888 int oldcxix = -2; 975 int oldcxix = -2;
889 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
890 coro_cctx *cctx = coro->cctx;
891 976
892 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
893 { 978 {
894 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
895 980
896 if (cctx->flags & CC_TRACE_ALL) 981 if (cctx_current->flags & CC_TRACE_ALL)
897 { 982 {
898 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
899 { 984 {
900 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
901 SV **bot, **top; 986 SV **bot, **top;
902 AV *av = newAV (); /* return values */ 987 AV *av = newAV (); /* return values */
903 SV **cb; 988 SV **cb;
… …
913 : cx->blk_gimme == G_SCALAR ? bot + 1 998 : cx->blk_gimme == G_SCALAR ? bot + 1
914 : bot; 999 : bot;
915 1000
916 av_extend (av, top - bot); 1001 av_extend (av, top - bot);
917 while (bot < top) 1002 while (bot < top)
918 av_push (av, SvREFCNT_inc (*bot++)); 1003 av_push (av, SvREFCNT_inc_NN (*bot++));
919 1004
920 PL_runops = RUNOPS_DEFAULT; 1005 PL_runops = RUNOPS_DEFAULT;
921 ENTER; 1006 ENTER;
922 SAVETMPS; 1007 SAVETMPS;
923 EXTEND (SP, 3); 1008 EXTEND (SP, 3);
… …
940 1025
941 if (PL_curcop != &PL_compiling) 1026 if (PL_curcop != &PL_compiling)
942 { 1027 {
943 SV **cb; 1028 SV **cb;
944 1029
945 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
946 { 1031 {
947 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
948 1033
949 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
950 { 1035 {
951 runops_proc_t old_runops = PL_runops;
952 dSP; 1036 dSP;
953 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
954 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
955 1039
956 if (isGV (gv)) 1040 if (isGV (gv))
… …
961 SAVETMPS; 1045 SAVETMPS;
962 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
963 PUSHMARK (SP); 1047 PUSHMARK (SP);
964 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
965 PUSHs (fullname); 1049 PUSHs (fullname);
966 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
967 PUTBACK; 1051 PUTBACK;
968 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
969 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
970 SPAGAIN; 1054 SPAGAIN;
971 FREETMPS; 1055 FREETMPS;
… …
974 } 1058 }
975 1059
976 oldcxix = cxstack_ix; 1060 oldcxix = cxstack_ix;
977 } 1061 }
978 1062
979 if (cctx->flags & CC_TRACE_LINE) 1063 if (cctx_current->flags & CC_TRACE_LINE)
980 { 1064 {
981 dSP; 1065 dSP;
982 1066
983 PL_runops = RUNOPS_DEFAULT; 1067 PL_runops = RUNOPS_DEFAULT;
984 ENTER; 1068 ENTER;
… …
1003 1087
1004 TAINT_NOT; 1088 TAINT_NOT;
1005 return 0; 1089 return 0;
1006} 1090}
1007 1091
1008/* inject a fake call to Coro::State::_cctx_init into the execution */ 1092static struct CoroSLF cctx_ssl_frame;
1009/* _cctx_init should be careful, as it could be called at almost any time */ 1093
1010/* during execution of a perl program */ 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 */
1011static void NOINLINE 1109static void NOINLINE
1012cctx_prepare (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
1013{ 1111{
1014 dSP;
1015 LOGOP myop;
1016
1017 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
1018 1113
1019 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
1020 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
1021 1116
1022 Zero (&myop, 1, LOGOP); 1117 /* we already must be executing an SLF op, there is no other valid way
1023 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
1024 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1025 1121
1026 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1027 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
1028 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1124
1029 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
1030 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
1031 PL_op = (OP *)&myop; 1127}
1032 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1128
1033 SPAGAIN; 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);
1034} 1134}
1035 1135
1036/* 1136/*
1037 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
1038 */ 1138 */
1039static void 1139static void
1040cctx_run (void *arg) 1140cctx_run (void *arg)
1041{ 1141{
1142#ifdef USE_ITHREADS
1143# if CORO_PTHREAD
1144 PERL_SET_CONTEXT (coro_thx);
1145# endif
1146#endif
1147 {
1042 dTHX; 1148 dTHX;
1043 1149
1044 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1150 /* normally we would need to skip the entersub here */
1045 UNLOCK; 1151 /* not doing so will re-execute it, which is exactly what we want */
1046
1047 /* we now skip the entersub that lead to transfer() */
1048 PL_op = PL_op->op_next; 1152 /* PL_nop = PL_nop->op_next */
1049 1153
1050 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
1051 cctx_prepare (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
1052 1156
1157 /* cctx_run is the alternative tail of transfer() */
1158 transfer_tail (aTHX);
1159
1053 /* 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 */
1054 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
1055 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
1056
1057 /* 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 /*
1058 * 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
1059 * 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)
1060 * 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
1061 * bootstrap-time "top" top_env, as we cannot restore the "main" 1172 * bootstrap-time "top" top_env, as we cannot restore the "main"
1062 * coroutine as Coro has no such concept 1173 * coroutine as Coro has no such concept
1063 */ 1174 */
1064 PL_top_env = main_top_env; 1175 PL_top_env = main_top_env;
1065 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 }
1066} 1178}
1067 1179
1068static coro_cctx * 1180static coro_cctx *
1069cctx_new () 1181cctx_new ()
1070{ 1182{
1071 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 ();
1072 void *stack_start; 1212 void *stack_start;
1073 size_t stack_size; 1213 size_t stack_size;
1074 1214
1075 ++cctx_count;
1076
1077 Newz (0, cctx, 1, coro_cctx);
1078
1079#if HAVE_MMAP 1215#if HAVE_MMAP
1080 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;
1081 /* mmap supposedly does allocate-on-write for us */ 1217 /* mmap supposedly does allocate-on-write for us */
1082 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);
1083 1219
1084 if (cctx->sptr != (void *)-1) 1220 if (cctx->sptr != (void *)-1)
1085 { 1221 {
1086# if CORO_STACKGUARD 1222 #if CORO_STACKGUARD
1087 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1223 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1088# endif 1224 #endif
1089 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1225 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1090 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1226 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1091 cctx->flags |= CC_MAPPED; 1227 cctx->flags |= CC_MAPPED;
1092 } 1228 }
1093 else 1229 else
1094#endif 1230#endif
1095 { 1231 {
1096 cctx->ssize = coro_stacksize * (long)sizeof (long); 1232 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1097 New (0, cctx->sptr, coro_stacksize, long); 1233 New (0, cctx->sptr, cctx_stacksize, long);
1098 1234
1099 if (!cctx->sptr) 1235 if (!cctx->sptr)
1100 { 1236 {
1101 perror ("FATAL: unable to allocate stack for coroutine"); 1237 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1102 _exit (EXIT_FAILURE); 1238 _exit (EXIT_FAILURE);
1103 } 1239 }
1104 1240
1105 stack_start = cctx->sptr; 1241 stack_start = cctx->sptr;
1106 stack_size = cctx->ssize; 1242 stack_size = cctx->ssize;
1107 } 1243 }
1108 1244
1109 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
1110 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1249 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1111 1250
1112 return cctx; 1251 return cctx;
1113} 1252}
1114 1253
… …
1116cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
1117{ 1256{
1118 if (!cctx) 1257 if (!cctx)
1119 return; 1258 return;
1120 1259
1260 assert (cctx != cctx_current);//D temporary
1261
1121 --cctx_count; 1262 --cctx_count;
1263 coro_destroy (&cctx->cctx);
1122 1264
1265 /* coro_transfer creates new, empty cctx's */
1266 if (cctx->sptr)
1267 {
1123#if CORO_USE_VALGRIND 1268 #if CORO_USE_VALGRIND
1124 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1269 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1125#endif 1270 #endif
1126 1271
1127#if HAVE_MMAP 1272#if HAVE_MMAP
1128 if (cctx->flags & CC_MAPPED) 1273 if (cctx->flags & CC_MAPPED)
1129 munmap (cctx->sptr, cctx->ssize); 1274 munmap (cctx->sptr, cctx->ssize);
1130 else 1275 else
1131#endif 1276#endif
1132 Safefree (cctx->sptr); 1277 Safefree (cctx->sptr);
1278 }
1133 1279
1134 Safefree (cctx); 1280 Safefree (cctx);
1135} 1281}
1136 1282
1137/* wether this cctx should be destructed */ 1283/* wether this cctx should be destructed */
1138#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1284#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1139 1285
1140static coro_cctx * 1286static coro_cctx *
1141cctx_get (pTHX) 1287cctx_get (pTHX)
1142{ 1288{
1143 while (expect_true (cctx_first)) 1289 while (expect_true (cctx_first))
… …
1150 return cctx; 1296 return cctx;
1151 1297
1152 cctx_destroy (cctx); 1298 cctx_destroy (cctx);
1153 } 1299 }
1154 1300
1155 return cctx_new (); 1301 return cctx_new_run ();
1156} 1302}
1157 1303
1158static void 1304static void
1159cctx_put (coro_cctx *cctx) 1305cctx_put (coro_cctx *cctx)
1160{ 1306{
1307 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1308
1161 /* free another cctx if overlimit */ 1309 /* free another cctx if overlimit */
1162 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1310 if (expect_false (cctx_idle >= cctx_max_idle))
1163 { 1311 {
1164 coro_cctx *first = cctx_first; 1312 coro_cctx *first = cctx_first;
1165 cctx_first = first->next; 1313 cctx_first = first->next;
1166 --cctx_idle; 1314 --cctx_idle;
1167 1315
… …
1176/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
1177 1325
1178static void 1326static void
1179transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1180{ 1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1181 if (expect_true (prev != next)) 1331 if (expect_true (prev != next))
1182 { 1332 {
1183 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1184 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1334 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1185 1335
1186 if (expect_false (next->flags & CF_RUNNING)) 1336 if (expect_false (next->flags & CF_RUNNING))
1187 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1188 1338
1189 if (expect_false (next->flags & CF_DESTROYED)) 1339 if (expect_false (next->flags & CF_DESTROYED))
1190 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1191 1341
1192#if !PERL_VERSION_ATLEAST (5,10,0) 1342#if !PERL_VERSION_ATLEAST (5,10,0)
1193 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1194 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1195#endif 1345#endif
1196 } 1346 }
1197} 1347}
1198 1348
1199/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
1200static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
1201transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1202{ 1352{
1203 dSTACKLEVEL; 1353 dSTACKLEVEL;
1204 static volatile int has_throw;
1205 1354
1206 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
1207 if (expect_false (!next)) 1356 if (expect_false (!prev))
1208 { 1357 {
1209 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
1210 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 */
1211 } 1360 }
1212 else if (expect_true (prev != next)) 1361 else if (expect_true (prev != next))
1213 { 1362 {
1214 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
1215 1364
1216 if (expect_false (prev->flags & CF_NEW)) 1365 if (expect_false (prev->flags & CF_NEW))
1217 { 1366 {
1218 /* create a new empty context */ 1367 /* create a new empty/source context */
1219 Newz (0, prev->cctx, 1, coro_cctx);
1220 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
1221 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
1222 } 1370 }
1223 1371
1224 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
1225 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
1226
1227 LOCK;
1228 1374
1229 /* first get rid of the old state */ 1375 /* first get rid of the old state */
1230 save_perl (aTHX_ prev); 1376 save_perl (aTHX_ prev);
1231 1377
1232 if (expect_false (next->flags & CF_NEW)) 1378 if (expect_false (next->flags & CF_NEW))
… …
1237 coro_setup (aTHX_ next); 1383 coro_setup (aTHX_ next);
1238 } 1384 }
1239 else 1385 else
1240 load_perl (aTHX_ next); 1386 load_perl (aTHX_ next);
1241 1387
1242 prev__cctx = prev->cctx; 1388 assert (!prev->cctx);//D temporary
1243 1389
1244 /* possibly "free" the cctx */ 1390 /* possibly untie and reuse the cctx */
1245 if (expect_true ( 1391 if (expect_true (
1246 prev__cctx->idle_sp == STACKLEVEL 1392 cctx_current->idle_sp == STACKLEVEL
1247 && !(prev__cctx->flags & CC_TRACE) 1393 && !(cctx_current->flags & CC_TRACE)
1248 && !force_cctx 1394 && !force_cctx
1249 )) 1395 ))
1250 { 1396 {
1251 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1397 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1252 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1398 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1253 1399
1254 prev->cctx = 0;
1255
1256 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1400 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1257 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1401 /* without this the next cctx_get might destroy the running cctx while still in use */
1258 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1402 if (expect_false (CCTX_EXPIRED (cctx_current)))
1259 if (!next->cctx) 1403 if (expect_true (!next->cctx))
1260 next->cctx = cctx_get (aTHX); 1404 next->cctx = cctx_get (aTHX);
1261 1405
1262 cctx_put (prev__cctx); 1406 cctx_put (cctx_current);
1263 } 1407 }
1408 else
1409 prev->cctx = cctx_current;
1264 1410
1265 ++next->usecount; 1411 ++next->usecount;
1266 1412
1267 if (expect_true (!next->cctx)) 1413 cctx_prev = cctx_current;
1268 next->cctx = cctx_get (aTHX); 1414 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1269 1415
1270 has_throw = !!next->throw; 1416 next->cctx = 0;
1271 1417
1272 if (expect_false (prev__cctx != next->cctx)) 1418 if (expect_false (cctx_prev != cctx_current))
1273 { 1419 {
1274 prev__cctx->top_env = PL_top_env; 1420 cctx_prev->top_env = PL_top_env;
1275 PL_top_env = next->cctx->top_env; 1421 PL_top_env = cctx_current->top_env;
1276 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1422 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1277 } 1423 }
1278 1424
1279 free_coro_mortal (aTHX); 1425 transfer_tail (aTHX);
1280 UNLOCK;
1281
1282 if (expect_false (has_throw))
1283 {
1284 struct coro *coro = SvSTATE (coro_current);
1285
1286 if (coro->throw)
1287 {
1288 SV *exception = coro->throw;
1289 coro->throw = 0;
1290 sv_setsv (ERRSV, exception);
1291 croak (0);
1292 }
1293 }
1294 } 1426 }
1295} 1427}
1296
1297struct transfer_args
1298{
1299 struct coro *prev, *next;
1300};
1301 1428
1302#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1429#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1303#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1430#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1304 1431
1305/** high level stuff ********************************************************/ 1432/** high level stuff ********************************************************/
… …
1307static int 1434static int
1308coro_state_destroy (pTHX_ struct coro *coro) 1435coro_state_destroy (pTHX_ struct coro *coro)
1309{ 1436{
1310 if (coro->flags & CF_DESTROYED) 1437 if (coro->flags & CF_DESTROYED)
1311 return 0; 1438 return 0;
1439
1440 if (coro->on_destroy)
1441 coro->on_destroy (aTHX_ coro);
1312 1442
1313 coro->flags |= CF_DESTROYED; 1443 coro->flags |= CF_DESTROYED;
1314 1444
1315 if (coro->flags & CF_READY) 1445 if (coro->flags & CF_READY)
1316 { 1446 {
1317 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1447 /* reduce nready, as destroying a ready coro effectively unreadies it */
1318 /* alternative: look through all ready queues and remove the coro */ 1448 /* alternative: look through all ready queues and remove the coro */
1319 LOCK;
1320 --coro_nready; 1449 --coro_nready;
1321 UNLOCK;
1322 } 1450 }
1323 else 1451 else
1324 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 */
1325 1453
1326 if (coro->mainstack && coro->mainstack != main_mainstack) 1454 if (coro->mainstack && coro->mainstack != main_mainstack)
1327 { 1455 {
1328 struct coro temp; 1456 struct coro temp;
1329 1457
1330 if (coro->flags & CF_RUNNING) 1458 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1331 croak ("FATAL: tried to destroy currently running coroutine");
1332 1459
1333 save_perl (aTHX_ &temp); 1460 save_perl (aTHX_ &temp);
1334 load_perl (aTHX_ coro); 1461 load_perl (aTHX_ coro);
1335 1462
1336 coro_destroy (aTHX_ coro); 1463 coro_destruct (aTHX_ coro);
1337 1464
1338 load_perl (aTHX_ &temp); 1465 load_perl (aTHX_ &temp);
1339 1466
1340 coro->slot = 0; 1467 coro->slot = 0;
1341 } 1468 }
1342 1469
1343 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
1344 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
1345 1474
1346 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
1347 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
1348 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
1349 1478
… …
1387# define MGf_DUP 0 1516# define MGf_DUP 0
1388#endif 1517#endif
1389}; 1518};
1390 1519
1391static void 1520static void
1392prepare_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)
1393{ 1522{
1394 ta->prev = SvSTATE (prev_sv); 1523 ta->prev = SvSTATE (prev_sv);
1395 ta->next = SvSTATE (next_sv); 1524 ta->next = SvSTATE (next_sv);
1396 TRANSFER_CHECK (*ta); 1525 TRANSFER_CHECK (*ta);
1397} 1526}
1398 1527
1399static void 1528static void
1400api_transfer (SV *prev_sv, SV *next_sv) 1529api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1401{ 1530{
1402 dTHX;
1403 struct transfer_args ta; 1531 struct coro_transfer_args ta;
1404 1532
1405 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1406 TRANSFER (ta, 1); 1534 TRANSFER (ta, 1);
1407} 1535}
1408 1536
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
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);
1558}
1559
1409/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1410 1561
1411static void 1562INLINE void
1412coro_enq (pTHX_ SV *coro_sv) 1563coro_enq (pTHX_ struct coro *coro)
1413{ 1564{
1414 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));
1415} 1566}
1416 1567
1417static SV * 1568INLINE SV *
1418coro_deq (pTHX) 1569coro_deq (pTHX)
1419{ 1570{
1420 int prio; 1571 int prio;
1421 1572
1422 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1573 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1425 1576
1426 return 0; 1577 return 0;
1427} 1578}
1428 1579
1429static int 1580static int
1430api_ready (SV *coro_sv) 1581api_ready (pTHX_ SV *coro_sv)
1431{ 1582{
1432 dTHX;
1433 struct coro *coro; 1583 struct coro *coro;
1434 SV *sv_hook; 1584 SV *sv_hook;
1435 void (*xs_hook)(void); 1585 void (*xs_hook)(void);
1436 1586
1437 if (SvROK (coro_sv)) 1587 if (SvROK (coro_sv))
… …
1442 if (coro->flags & CF_READY) 1592 if (coro->flags & CF_READY)
1443 return 0; 1593 return 0;
1444 1594
1445 coro->flags |= CF_READY; 1595 coro->flags |= CF_READY;
1446 1596
1447 LOCK;
1448
1449 sv_hook = coro_nready ? 0 : coro_readyhook; 1597 sv_hook = coro_nready ? 0 : coro_readyhook;
1450 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1598 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1451 1599
1452 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1600 coro_enq (aTHX_ coro);
1453 ++coro_nready; 1601 ++coro_nready;
1454 1602
1455 UNLOCK;
1456
1457 if (sv_hook) 1603 if (sv_hook)
1458 { 1604 {
1459 dSP; 1605 dSP;
1460 1606
1461 ENTER; 1607 ENTER;
1462 SAVETMPS; 1608 SAVETMPS;
1463 1609
1464 PUSHMARK (SP); 1610 PUSHMARK (SP);
1465 PUTBACK; 1611 PUTBACK;
1466 call_sv (sv_hook, G_DISCARD); 1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1467 SPAGAIN;
1468 1613
1469 FREETMPS; 1614 FREETMPS;
1470 LEAVE; 1615 LEAVE;
1471 } 1616 }
1472 1617
… …
1475 1620
1476 return 1; 1621 return 1;
1477} 1622}
1478 1623
1479static int 1624static int
1480api_is_ready (SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1481{ 1626{
1482 dTHX;
1483 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1484} 1628}
1485 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
1486static void 1647static void
1487prepare_schedule (pTHX_ struct transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1488{ 1649{
1489 SV *prev_sv, *next_sv;
1490
1491 for (;;) 1650 for (;;)
1492 { 1651 {
1493 LOCK;
1494 next_sv = coro_deq (aTHX); 1652 SV *next_sv = coro_deq (aTHX);
1495 1653
1496 /* nothing to schedule: call the idle handler */
1497 if (expect_false (!next_sv)) 1654 if (expect_true (next_sv))
1498 { 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 {
1672 /* nothing to schedule: call the idle handler */
1499 dSP; 1673 dSP;
1500 UNLOCK;
1501 1674
1502 ENTER; 1675 ENTER;
1503 SAVETMPS; 1676 SAVETMPS;
1504 1677
1505 PUSHMARK (SP); 1678 PUSHMARK (SP);
1506 PUTBACK; 1679 PUTBACK;
1507 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1508 SPAGAIN;
1509 1681
1510 FREETMPS; 1682 FREETMPS;
1511 LEAVE; 1683 LEAVE;
1512 continue;
1513 } 1684 }
1514
1515 ta->next = SvSTATE (next_sv);
1516
1517 /* cannot transfer to destroyed coros, skip and look for next */
1518 if (expect_false (ta->next->flags & CF_DESTROYED))
1519 {
1520 UNLOCK;
1521 SvREFCNT_dec (next_sv);
1522 /* coro_nready is already taken care of by destroy */
1523 continue;
1524 }
1525
1526 --coro_nready;
1527 UNLOCK;
1528 break;
1529 } 1685 }
1530
1531 /* free this only after the transfer */
1532 prev_sv = SvRV (coro_current);
1533 ta->prev = SvSTATE (prev_sv);
1534 TRANSFER_CHECK (*ta);
1535 assert (ta->next->flags & CF_READY);
1536 ta->next->flags &= ~CF_READY;
1537 SvRV_set (coro_current, next_sv);
1538
1539 LOCK;
1540 free_coro_mortal (aTHX);
1541 coro_mortal = prev_sv;
1542 UNLOCK;
1543} 1686}
1544 1687
1545static void 1688INLINE void
1546prepare_cede (pTHX_ struct transfer_args *ta) 1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1547{ 1690{
1548 api_ready (coro_current); 1691 api_ready (aTHX_ coro_current);
1549 prepare_schedule (aTHX_ ta); 1692 prepare_schedule (aTHX_ ta);
1550} 1693}
1551 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
1552static int 1728static int
1553prepare_cede_notself (pTHX_ struct transfer_args *ta) 1729api_cede (pTHX)
1554{ 1730{
1555 if (coro_nready) 1731 struct coro_transfer_args ta;
1556 { 1732
1557 SV *prev = SvRV (coro_current);
1558 prepare_schedule (aTHX_ ta); 1733 prepare_cede (aTHX_ &ta);
1559 api_ready (prev); 1734
1735 if (expect_true (ta.prev != ta.next))
1736 {
1737 TRANSFER (ta, 1);
1560 return 1; 1738 return 1;
1561 } 1739 }
1562 else 1740 else
1563 return 0; 1741 return 0;
1564} 1742}
1565 1743
1566static void
1567api_schedule (void)
1568{
1569 dTHX;
1570 struct transfer_args ta;
1571
1572 prepare_schedule (aTHX_ &ta);
1573 TRANSFER (ta, 1);
1574}
1575
1576static int 1744static int
1577api_cede (void) 1745api_cede_notself (pTHX)
1578{ 1746{
1579 dTHX; 1747 if (coro_nready)
1748 {
1580 struct transfer_args ta; 1749 struct coro_transfer_args ta;
1581 1750
1582 prepare_cede (aTHX_ &ta); 1751 prepare_cede_notself (aTHX_ &ta);
1583
1584 if (expect_true (ta.prev != ta.next))
1585 {
1586 TRANSFER (ta, 1); 1752 TRANSFER (ta, 1);
1587 return 1; 1753 return 1;
1588 } 1754 }
1589 else 1755 else
1590 return 0; 1756 return 0;
1591} 1757}
1592 1758
1593static int 1759static void
1594api_cede_notself (void)
1595{
1596 dTHX;
1597 struct transfer_args ta;
1598
1599 if (prepare_cede_notself (aTHX_ &ta))
1600 {
1601 TRANSFER (ta, 1);
1602 return 1;
1603 }
1604 else
1605 return 0;
1606}
1607
1608static void
1609api_trace (SV *coro_sv, int flags) 1760api_trace (pTHX_ SV *coro_sv, int flags)
1610{ 1761{
1611 dTHX;
1612 struct coro *coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1613 1763
1764 if (coro->flags & CF_RUNNING)
1765 croak ("cannot enable tracing on a running coroutine, caught");
1766
1614 if (flags & CC_TRACE) 1767 if (flags & CC_TRACE)
1615 { 1768 {
1616 if (!coro->cctx) 1769 if (!coro->cctx)
1617 coro->cctx = cctx_new (); 1770 coro->cctx = cctx_new_run ();
1618 else if (!(coro->cctx->flags & CC_TRACE)) 1771 else if (!(coro->cctx->flags & CC_TRACE))
1619 croak ("cannot enable tracing on coroutine with custom stack"); 1772 croak ("cannot enable tracing on coroutine with custom stack, caught");
1620 1773
1621 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1774 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1622 } 1775 }
1623 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1776 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1624 { 1777 {
… …
1629 else 1782 else
1630 coro->slot->runops = RUNOPS_DEFAULT; 1783 coro->slot->runops = RUNOPS_DEFAULT;
1631 } 1784 }
1632} 1785}
1633 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
1634static int 1843static int
1635coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1844slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1636{ 1845{
1637 AV *padlist; 1846 HV *hv = (HV *)SvRV (coro_current);
1638 AV *av = (AV *)mg->mg_obj; 1847 struct coro *coro = (struct coro *)frame->data;
1639 1848
1640 abort (); 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 }
1641 1972
1642 return 0; 1973 return 0;
1643} 1974}
1644 1975
1645static MGVTBL coro_gensub_vtbl = { 1976static void
1646 0, 0, 0, 0, 1977slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1647 coro_gensub_free 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,
1648}; 2341};
1649 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)
2392 {
2393 dSP;
2394 PUSHMARK (SP);
2395 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2396 PUTBACK;
2397 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2398 }
2399
2400 SvREFCNT_dec (cb);
2401 }
2402}
2403
2404static void
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))
2684 {
2685 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2686 prio_sv = newSViv (0);
2687 }
2688
2689 PUSHMARK (SP);
2690 sv_setiv (prio_sv, coro->prio);
2691 XPUSHs (prio_sv);
2692
2693 PUTBACK;
2694 call_sv (prio_cv, G_VOID | G_DISCARD);
2695 }
2696
2697 /* now call the original request */
2698 {
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);
2717 }
2718
2719 /* now that the requets is going, we loop toll we have a result */
2720 frame->data = (void *)state;
2721 frame->prepare = prepare_schedule;
2722 frame->check = slf_check_aio_req;
2723}
2724
2725static void
2726coro_aio_req_xs (pTHX_ CV *cv)
2727{
2728 dXSARGS;
2729
2730 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2731
2732 XSRETURN_EMPTY;
2733}
2734
2735/*****************************************************************************/
2736
2737#if CORO_CLONE
2738# include "clone.c"
2739#endif
2740
1650MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2741MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1651 2742
1652PROTOTYPES: DISABLE 2743PROTOTYPES: DISABLE
1653 2744
1654BOOT: 2745BOOT:
1655{ 2746{
1656#ifdef USE_ITHREADS 2747#ifdef USE_ITHREADS
1657 MUTEX_INIT (&coro_mutex); 2748# if CORO_PTHREAD
2749 coro_thx = PERL_GET_CONTEXT;
2750# endif
1658#endif 2751#endif
1659 BOOT_PAGESIZE; 2752 BOOT_PAGESIZE;
2753
2754 cctx_current = cctx_new_empty ();
1660 2755
1661 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1662 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1663 2758
1664 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2759 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1680 main_top_env = PL_top_env; 2775 main_top_env = PL_top_env;
1681 2776
1682 while (main_top_env->je_prev) 2777 while (main_top_env->je_prev)
1683 main_top_env = main_top_env->je_prev; 2778 main_top_env = main_top_env->je_prev;
1684 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
1685 coroapi.ver = CORO_API_VERSION; 2790 coroapi.ver = CORO_API_VERSION;
1686 coroapi.rev = CORO_API_REVISION; 2791 coroapi.rev = CORO_API_REVISION;
2792
1687 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 }
1688 2810
1689 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2811 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1690} 2812}
1691 2813
1692SV * 2814SV *
1693new (char *klass, ...) 2815new (char *klass, ...)
2816 ALIAS:
2817 Coro::new = 1
1694 CODE: 2818 CODE:
1695{ 2819{
1696 struct coro *coro; 2820 struct coro *coro;
1697 MAGIC *mg; 2821 MAGIC *mg;
1698 HV *hv; 2822 HV *hv;
2823 CV *cb;
1699 int i; 2824 int i;
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 }
1700 2839
1701 Newz (0, coro, 1, struct coro); 2840 Newz (0, coro, 1, struct coro);
1702 coro->args = newAV (); 2841 coro->args = newAV ();
1703 coro->flags = CF_NEW; 2842 coro->flags = CF_NEW;
1704 2843
… …
1709 coro->hv = hv = newHV (); 2848 coro->hv = hv = newHV ();
1710 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2849 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1711 mg->mg_flags |= MGf_DUP; 2850 mg->mg_flags |= MGf_DUP;
1712 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2851 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1713 2852
2853 if (items > 1)
2854 {
1714 av_extend (coro->args, items - 1); 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
1715 for (i = 1; i < items; i++) 2865 for (i = 2; i < items; i++)
1716 av_push (coro->args, newSVsv (ST (i))); 2866 av_push (coro->args, newSVsv (ST (i)));
2867 }
1717} 2868}
1718 OUTPUT: 2869 OUTPUT:
1719 RETVAL 2870 RETVAL
1720 2871
1721# these not obviously related functions are all rolled into the same xs
1722# function to increase chances that they all will call transfer with the same
1723# stack offset
1724void 2872void
1725_set_stacklevel (...) 2873transfer (...)
1726 ALIAS: 2874 PROTOTYPE: $$
1727 Coro::State::transfer = 1 2875 CODE:
1728 Coro::schedule = 2 2876 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1729 Coro::cede = 3
1730 Coro::cede_notself = 4
1731 CODE:
1732{
1733 struct transfer_args ta;
1734
1735 PUTBACK;
1736 switch (ix)
1737 {
1738 case 0:
1739 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1740 ta.next = 0;
1741 break;
1742
1743 case 1:
1744 if (items != 2)
1745 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1746
1747 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1748 break;
1749
1750 case 2:
1751 prepare_schedule (aTHX_ &ta);
1752 break;
1753
1754 case 3:
1755 prepare_cede (aTHX_ &ta);
1756 break;
1757
1758 case 4:
1759 if (!prepare_cede_notself (aTHX_ &ta))
1760 XSRETURN_EMPTY;
1761
1762 break;
1763 }
1764 SPAGAIN;
1765
1766 BARRIER;
1767 PUTBACK;
1768 TRANSFER (ta, 0);
1769 SPAGAIN; /* might be the sp of a different coroutine now */
1770 /* be extra careful not to ever do anything after TRANSFER */
1771}
1772 2877
1773bool 2878bool
1774_destroy (SV *coro_sv) 2879_destroy (SV *coro_sv)
1775 CODE: 2880 CODE:
1776 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2881 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1781_exit (int code) 2886_exit (int code)
1782 PROTOTYPE: $ 2887 PROTOTYPE: $
1783 CODE: 2888 CODE:
1784 _exit (code); 2889 _exit (code);
1785 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
1786int 2910int
1787cctx_stacksize (int new_stacksize = 0) 2911cctx_stacksize (int new_stacksize = 0)
2912 PROTOTYPE: ;$
1788 CODE: 2913 CODE:
1789 RETVAL = coro_stacksize; 2914 RETVAL = cctx_stacksize;
1790 if (new_stacksize) 2915 if (new_stacksize)
2916 {
1791 coro_stacksize = new_stacksize; 2917 cctx_stacksize = new_stacksize;
2918 ++cctx_gen;
2919 }
1792 OUTPUT: 2920 OUTPUT:
1793 RETVAL 2921 RETVAL
1794 2922
1795int 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
1796cctx_count () 2934cctx_count ()
2935 PROTOTYPE:
1797 CODE: 2936 CODE:
1798 RETVAL = cctx_count; 2937 RETVAL = cctx_count;
1799 OUTPUT: 2938 OUTPUT:
1800 RETVAL 2939 RETVAL
1801 2940
1802int 2941int
1803cctx_idle () 2942cctx_idle ()
2943 PROTOTYPE:
1804 CODE: 2944 CODE:
1805 RETVAL = cctx_idle; 2945 RETVAL = cctx_idle;
1806 OUTPUT: 2946 OUTPUT:
1807 RETVAL 2947 RETVAL
1808 2948
1809void 2949void
1810list () 2950list ()
2951 PROTOTYPE:
1811 PPCODE: 2952 PPCODE:
1812{ 2953{
1813 struct coro *coro; 2954 struct coro *coro;
1814 for (coro = coro_first; coro; coro = coro->next) 2955 for (coro = coro_first; coro; coro = coro->next)
1815 if (coro->hv) 2956 if (coro->hv)
… …
1874 RETVAL = boolSV (coro->flags & ix); 3015 RETVAL = boolSV (coro->flags & ix);
1875 OUTPUT: 3016 OUTPUT:
1876 RETVAL 3017 RETVAL
1877 3018
1878void 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
1879api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3031api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3032 PROTOTYPE: $;$
3033 C_ARGS: aTHX_ coro, flags
1880 3034
1881SV * 3035SV *
1882has_cctx (Coro::State coro) 3036has_cctx (Coro::State coro)
1883 PROTOTYPE: $ 3037 PROTOTYPE: $
1884 CODE: 3038 CODE:
1885 RETVAL = boolSV (!!coro->cctx); 3039 /* maybe manage the running flag differently */
3040 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1886 OUTPUT: 3041 OUTPUT:
1887 RETVAL 3042 RETVAL
1888 3043
1889int 3044int
1890is_traced (Coro::State coro) 3045is_traced (Coro::State coro)
… …
1892 CODE: 3047 CODE:
1893 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3048 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1894 OUTPUT: 3049 OUTPUT:
1895 RETVAL 3050 RETVAL
1896 3051
1897IV 3052UV
1898rss (Coro::State coro) 3053rss (Coro::State coro)
1899 PROTOTYPE: $ 3054 PROTOTYPE: $
1900 ALIAS: 3055 ALIAS:
1901 usecount = 1 3056 usecount = 1
1902 CODE: 3057 CODE:
… …
1908 OUTPUT: 3063 OUTPUT:
1909 RETVAL 3064 RETVAL
1910 3065
1911void 3066void
1912force_cctx () 3067force_cctx ()
3068 PROTOTYPE:
1913 CODE: 3069 CODE:
1914 struct coro *coro = SvSTATE (coro_current);
1915 coro->cctx->idle_sp = 0; 3070 cctx_current->idle_sp = 0;
1916
1917void
1918throw (Coro::State self, SV *throw = &PL_sv_undef)
1919 PROTOTYPE: $;$
1920 CODE:
1921 SvREFCNT_dec (self->throw);
1922 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1923 3071
1924void 3072void
1925swap_defsv (Coro::State self) 3073swap_defsv (Coro::State self)
1926 PROTOTYPE: $ 3074 PROTOTYPE: $
1927 ALIAS: 3075 ALIAS:
1928 swap_defav = 1 3076 swap_defav = 1
1929 CODE: 3077 CODE:
1930 if (!self->slot) 3078 if (!self->slot)
1931 croak ("cannot swap state with coroutine that has no saved state"); 3079 croak ("cannot swap state with coroutine that has no saved state,");
1932 else 3080 else
1933 { 3081 {
1934 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3082 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1935 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3083 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1936 3084
1937 SV *tmp = *src; *src = *dst; *dst = tmp; 3085 SV *tmp = *src; *src = *dst; *dst = tmp;
1938 } 3086 }
1939 3087
3088
1940MODULE = Coro::State PACKAGE = Coro 3089MODULE = Coro::State PACKAGE = Coro
1941 3090
1942BOOT: 3091BOOT:
1943{ 3092{
1944 int i; 3093 int i;
1945 3094
1946 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1947 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3095 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1948 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3096 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1949 3097 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3098 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
1950 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3099 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1951 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);
1952 3108
1953 coro_stash = gv_stashpv ("Coro", TRUE); 3109 coro_stash = gv_stashpv ("Coro", TRUE);
1954 3110
1955 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1956 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
1961 3117
1962 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3118 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1963 coro_ready[i] = newAV (); 3119 coro_ready[i] = newAV ();
1964 3120
1965 { 3121 {
1966 SV *sv = perl_get_sv ("Coro::API", TRUE); 3122 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1967 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1968 3123
1969 coroapi.schedule = api_schedule; 3124 coroapi.schedule = api_schedule;
3125 coroapi.schedule_to = api_schedule_to;
1970 coroapi.cede = api_cede; 3126 coroapi.cede = api_cede;
1971 coroapi.cede_notself = api_cede_notself; 3127 coroapi.cede_notself = api_cede_notself;
1972 coroapi.ready = api_ready; 3128 coroapi.ready = api_ready;
1973 coroapi.is_ready = api_is_ready; 3129 coroapi.is_ready = api_is_ready;
1974 coroapi.nready = &coro_nready; 3130 coroapi.nready = coro_nready;
1975 coroapi.current = coro_current; 3131 coroapi.current = coro_current;
1976 3132
1977 GCoroAPI = &coroapi; 3133 /*GCoroAPI = &coroapi;*/
1978 sv_setiv (sv, (IV)&coroapi); 3134 sv_setiv (sv, (IV)&coroapi);
1979 SvREADONLY_on (sv); 3135 SvREADONLY_on (sv);
1980 } 3136 }
1981} 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);
1982 3174
1983void 3175void
1984_set_current (SV *current) 3176_set_current (SV *current)
1985 PROTOTYPE: $ 3177 PROTOTYPE: $
1986 CODE: 3178 CODE:
1987 SvREFCNT_dec (SvRV (coro_current)); 3179 SvREFCNT_dec (SvRV (coro_current));
1988 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3180 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1989 3181
1990void 3182void
1991_set_readyhook (SV *hook) 3183_set_readyhook (SV *hook)
1992 PROTOTYPE: $ 3184 PROTOTYPE: $
1993 CODE: 3185 CODE:
1994 LOCK;
1995 SvREFCNT_dec (coro_readyhook); 3186 SvREFCNT_dec (coro_readyhook);
1996 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3187 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1997 UNLOCK;
1998 3188
1999int 3189int
2000prio (Coro::State coro, int newprio = 0) 3190prio (Coro::State coro, int newprio = 0)
3191 PROTOTYPE: $;$
2001 ALIAS: 3192 ALIAS:
2002 nice = 1 3193 nice = 1
2003 CODE: 3194 CODE:
2004{ 3195{
2005 RETVAL = coro->prio; 3196 RETVAL = coro->prio;
… …
2020 3211
2021SV * 3212SV *
2022ready (SV *self) 3213ready (SV *self)
2023 PROTOTYPE: $ 3214 PROTOTYPE: $
2024 CODE: 3215 CODE:
2025 RETVAL = boolSV (api_ready (self)); 3216 RETVAL = boolSV (api_ready (aTHX_ self));
2026 OUTPUT: 3217 OUTPUT:
2027 RETVAL 3218 RETVAL
2028 3219
2029int 3220int
2030nready (...) 3221nready (...)
… …
2032 CODE: 3223 CODE:
2033 RETVAL = coro_nready; 3224 RETVAL = coro_nready;
2034 OUTPUT: 3225 OUTPUT:
2035 RETVAL 3226 RETVAL
2036 3227
2037# for async_pool speedup
2038void 3228void
2039_pool_1 (SV *cb) 3229_pool_handler (...)
2040 CODE: 3230 CODE:
2041{ 3231 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2042 struct coro *coro = SvSTATE (coro_current);
2043 HV *hv = (HV *)SvRV (coro_current);
2044 AV *defav = GvAV (PL_defgv);
2045 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2046 AV *invoke_av;
2047 int i, len;
2048 3232
2049 if (!invoke) 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)
2050 { 3248 {
2051 SV *old = PL_diehook; 3249 PUSHMARK (SP);
2052 PL_diehook = 0; 3250 EXTEND (SP, 2);
2053 SvREFCNT_dec (old); 3251 PUSHs (sv_Coro);
2054 croak ("\3async_pool terminate\2\n"); 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));
2055 } 3258 }
2056 3259
2057 SvREFCNT_dec (coro->saved_deffh);
2058 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2059
2060 hv_store (hv, "desc", sizeof ("desc") - 1,
2061 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2062
2063 invoke_av = (AV *)SvRV (invoke);
2064 len = av_len (invoke_av);
2065
2066 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2067
2068 if (len > 0)
2069 { 3260 {
2070 av_fill (defav, len - 1); 3261 struct coro *coro = SvSTATE_hv (hv);
2071 for (i = 0; i < len; ++i) 3262
2072 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3263 assert (!coro->invoke_cb);
3264 assert (!coro->invoke_av);
3265 coro->invoke_cb = SvREFCNT_inc (cb);
3266 coro->invoke_av = av;
2073 } 3267 }
2074 3268
3269 api_ready (aTHX_ (SV *)hv);
3270
3271 if (GIMME_V != G_VOID)
3272 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3273 else
2075 SvREFCNT_dec (invoke); 3274 SvREFCNT_dec (hv);
2076} 3275}
2077 3276
2078void 3277SV *
2079_pool_2 (SV *cb) 3278rouse_cb ()
3279 PROTOTYPE:
2080 CODE: 3280 CODE:
2081{ 3281 RETVAL = coro_new_rouse_cb (aTHX);
2082 struct coro *coro = SvSTATE (coro_current);
2083
2084 sv_setsv (cb, &PL_sv_undef);
2085
2086 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2087 coro->saved_deffh = 0;
2088
2089 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2090 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2091 {
2092 SV *old = PL_diehook;
2093 PL_diehook = 0;
2094 SvREFCNT_dec (old);
2095 croak ("\3async_pool terminate\2\n");
2096 }
2097
2098 av_clear (GvAV (PL_defgv));
2099 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2100 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2101
2102 coro->prio = 0;
2103
2104 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2105 api_trace (coro_current, 0);
2106
2107 av_push (av_async_pool, newSVsv (coro_current));
2108}
2109
2110#if 0
2111
2112void
2113_generator_call (...)
2114 PROTOTYPE: @
2115 PPCODE:
2116 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2117 xxxx
2118 abort ();
2119
2120SV *
2121gensub (SV *sub, ...)
2122 PROTOTYPE: &;@
2123 CODE:
2124{
2125 struct coro *coro;
2126 MAGIC *mg;
2127 CV *xcv;
2128 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2129 int i;
2130
2131 CvGV (ncv) = CvGV (cv);
2132 CvFILE (ncv) = CvFILE (cv);
2133
2134 Newz (0, coro, 1, struct coro);
2135 coro->args = newAV ();
2136 coro->flags = CF_NEW;
2137
2138 av_extend (coro->args, items - 1);
2139 for (i = 1; i < items; i++)
2140 av_push (coro->args, newSVsv (ST (i)));
2141
2142 CvISXSUB_on (ncv);
2143 CvXSUBANY (ncv).any_ptr = (void *)coro;
2144
2145 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2146
2147 CvXSUB (ncv) = CvXSUB (xcv);
2148 CvANON_on (ncv);
2149
2150 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2151 RETVAL = newRV_noinc ((SV *)ncv);
2152}
2153 OUTPUT: 3282 OUTPUT:
2154 RETVAL 3283 RETVAL
2155 3284
2156#endif 3285void
3286rouse_wait (...)
3287 PROTOTYPE: ;$
3288 PPCODE:
3289 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2157 3290
2158 3291
3292MODULE = Coro::State PACKAGE = PerlIO::cede
3293
3294BOOT:
3295 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3296
3297
2159MODULE = Coro::State PACKAGE = Coro::AIO 3298MODULE = Coro::State PACKAGE = Coro::Semaphore
2160 3299
2161SV * 3300SV *
2162_get_state () 3301new (SV *klass, SV *count = 0)
2163 CODE: 3302 CODE:
2164{ 3303 RETVAL = sv_bless (
2165 struct io_state *data; 3304 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2166 3305 GvSTASH (CvGV (cv))
2167 RETVAL = newSV (sizeof (struct io_state)); 3306 );
2168 data = (struct io_state *)SvPVX (RETVAL);
2169 SvCUR_set (RETVAL, sizeof (struct io_state));
2170 SvPOK_only (RETVAL);
2171
2172 data->errorno = errno;
2173 data->laststype = PL_laststype;
2174 data->laststatval = PL_laststatval;
2175 data->statcache = PL_statcache;
2176}
2177 OUTPUT: 3307 OUTPUT:
2178 RETVAL 3308 RETVAL
2179 3309
3310# helper for Coro::Channel
3311SV *
3312_alloc (int count)
3313 CODE:
3314 RETVAL = coro_waitarray_new (aTHX_ count);
3315 OUTPUT:
3316 RETVAL
3317
3318SV *
3319count (SV *self)
3320 CODE:
3321 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3322 OUTPUT:
3323 RETVAL
3324
2180void 3325void
2181_set_state (char *data_) 3326up (SV *self, int adjust = 1)
2182 PROTOTYPE: $ 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)
2183 CODE: 3382 CODE:
2184{ 3383 RETVAL = sv_bless (
2185 struct io_state *data = (void *)data_; 3384 coro_waitarray_new (aTHX_ 0),
3385 GvSTASH (CvGV (cv))
3386 );
3387 OUTPUT:
3388 RETVAL
2186 3389
2187 errno = data->errorno; 3390void
2188 PL_laststype = data->laststype; 3391wait (...)
2189 PL_laststatval = data->laststatval; 3392 CODE:
2190 PL_statcache = data->statcache; 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));
2191} 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
2192 3421
2193 3422
2194MODULE = Coro::State PACKAGE = Coro::AnyEvent 3423MODULE = Coro::State PACKAGE = Coro::AnyEvent
2195 3424
2196BOOT: 3425BOOT:
2197 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3426 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2198 3427
2199SV * 3428void
2200_schedule (...) 3429_schedule (...)
2201 PROTOTYPE: @
2202 CODE: 3430 CODE:
2203{ 3431{
2204 static int incede; 3432 static int incede;
2205 3433
2206 api_cede_notself (); 3434 api_cede_notself (aTHX);
2207 3435
2208 ++incede; 3436 ++incede;
2209 while (coro_nready >= incede && api_cede ()) 3437 while (coro_nready >= incede && api_cede (aTHX))
2210 ; 3438 ;
2211 3439
2212 sv_setsv (sv_activity, &PL_sv_undef); 3440 sv_setsv (sv_activity, &PL_sv_undef);
2213 if (coro_nready >= incede) 3441 if (coro_nready >= incede)
2214 { 3442 {
2215 PUSHMARK (SP); 3443 PUSHMARK (SP);
2216 PUTBACK; 3444 PUTBACK;
2217 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3445 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2218 SPAGAIN;
2219 } 3446 }
2220 3447
2221 --incede; 3448 --incede;
2222} 3449}
2223 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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