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Comparing Coro/Coro/State.xs (file contents):
Revision 1.209 by root, Wed Oct 10 02:58:17 2007 UTC vs.
Revision 1.299 by root, Wed Nov 19 00:06:55 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>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
77/* 5.8.7 */ 104/* 5.8.7 */
78#ifndef SvRV_set 105#ifndef SvRV_set
79# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
80#endif 107#endif
81 108
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91# undef CORO_STACKGUARD 110# undef CORO_STACKGUARD
92#endif 111#endif
93 112
94#ifndef CORO_STACKGUARD 113#ifndef CORO_STACKGUARD
… …
100# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
101#endif 120#endif
102 121
103/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
104 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
105#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
106#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
107 131
108#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
109 133
110#if __GNUC__ >= 3 134#if __GNUC__ >= 3
111# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
114#else 138#else
115# define attribute(x) 139# define attribute(x)
116# define BARRIER
117# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
118#endif 142#endif
119 143
120#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
122 146
123#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
124 148
125#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
126 151
127#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
128static perl_mutex coro_mutex; 153# if CORO_PTHREAD
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
130# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
131#else
132# define LOCK (void)0
133# define UNLOCK (void)0
134#endif 155# endif
156#endif
135 157
136#define strpair(const) const, sizeof (const) - 1 158static double (*nvtime)(); /* so why doesn't it take void? */
137 159
138/* helper storage struct for Coro::AIO */ 160/* we hijack an hopefully unused CV flag for our purposes */
139struct io_state 161#define CVf_SLF 0x4000
140{ 162static OP *pp_slf (pTHX);
141 int errorno;
142 I32 laststype;
143 int laststatval;
144 Stat_t statcache;
145};
146 163
164static U32 cctx_gen;
147static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
148static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
149static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
150static JMPENV *main_top_env; 168static JMPENV *main_top_env;
151static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
152static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
153 171
154static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
155static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
156 174static SV *rv_diehook;
175static SV *rv_warnhook;
157static HV *hv_sig; /* %SIG */ 176static HV *hv_sig; /* %SIG */
158static SV *sv_diehook;
159static SV *sv_warnhook;
160 177
161/* async_pool helper stuff */ 178/* async_pool helper stuff */
162static SV *sv_pool_rss; 179static SV *sv_pool_rss;
163static SV *sv_pool_size; 180static SV *sv_pool_size;
164static AV *av_async_pool; 181static AV *av_async_pool;
165 182
166static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */ 183/* Coro::AnyEvent */
184static SV *sv_activity;
185
186static struct coro_cctx *cctx_first;
167static int cctx_count, cctx_idle[3]; 187static int cctx_count, cctx_idle;
168 188
169enum { 189enum {
170 CC_MAPPED = 0x01, 190 CC_MAPPED = 0x01,
171 CC_NOREUSE = 0x02, /* throw this away after tracing */ 191 CC_NOREUSE = 0x02, /* throw this away after tracing */
172 CC_TRACE = 0x04, 192 CC_TRACE = 0x04,
… …
174 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
176}; 196};
177 197
178/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
179typedef struct coro_cctx { 199typedef struct coro_cctx
200{
180 struct coro_cctx *next; 201 struct coro_cctx *next;
181 202
182 /* the stack */ 203 /* the stack */
183 void *sptr; 204 void *sptr;
184 size_t ssize; 205 size_t ssize;
… …
187 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
188 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
189 JMPENV *top_env; 210 JMPENV *top_env;
190 coro_context cctx; 211 coro_context cctx;
191 212
213 U32 gen;
192#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
193 int valgrind_id; 215 int valgrind_id;
194#endif 216#endif
195 unsigned char flags; 217 unsigned char flags;
196} coro_cctx; 218} coro_cctx;
… …
201 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
202 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
203}; 225};
204 226
205/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
206typedef struct { 228typedef struct
229{
207 SV *defsv; 230 SV *defsv;
208 AV *defav; 231 AV *defav;
209 SV *errsv; 232 SV *errsv;
210 SV *irsgv; 233 SV *irsgv;
211#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
215 238
216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217 240
218/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
219struct coro { 242struct coro {
220 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
221 coro_cctx *cctx; 244 coro_cctx *cctx;
222 int gimme;
223 245
224 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
225 AV *mainstack; 248 AV *mainstack;
226 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
227 250
228 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
229 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
230 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
231 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
232 256
233 /* statistics */ 257 /* statistics */
234 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
235 259
236 /* coro process data */ 260 /* coro process data */
237 int prio; 261 int prio;
238 SV *throw; /* exception to be thrown */ 262 SV *except; /* exception to be thrown */
239 263
240 /* async_pool */ 264 /* async_pool */
241 SV *saved_deffh; 265 SV *saved_deffh;
242 266
243 /* linked list */ 267 /* linked list */
244 struct coro *next, *prev; 268 struct coro *next, *prev;
245}; 269};
246 270
247typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
248typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
249 278
250/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
251 280
252#define PRIO_MAX 3 281#define PRIO_MAX 3
253#define PRIO_HIGH 1 282#define PRIO_HIGH 1
… …
256#define PRIO_IDLE -3 285#define PRIO_IDLE -3
257#define PRIO_MIN -4 286#define PRIO_MIN -4
258 287
259/* for Coro.pm */ 288/* for Coro.pm */
260static SV *coro_current; 289static SV *coro_current;
290static SV *coro_readyhook;
261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
262static int coro_nready;
263static struct coro *coro_first; 292static struct coro *coro_first;
293#define coro_nready coroapi.nready
264 294
265/** lowlevel stuff **********************************************************/ 295/** lowlevel stuff **********************************************************/
266 296
267static SV * 297static SV *
268coro_get_sv (const char *name, int create) 298coro_get_sv (pTHX_ const char *name, int create)
269{ 299{
270#if PERL_VERSION_ATLEAST (5,9,0) 300#if PERL_VERSION_ATLEAST (5,10,0)
271 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 301 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
272 get_sv (name, create); 302 get_sv (name, create);
273#endif 303#endif
274 return get_sv (name, create); 304 return get_sv (name, create);
275} 305}
276 306
277static AV * 307static AV *
278coro_get_av (const char *name, int create) 308coro_get_av (pTHX_ const char *name, int create)
279{ 309{
280#if PERL_VERSION_ATLEAST (5,9,0) 310#if PERL_VERSION_ATLEAST (5,10,0)
281 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
282 get_av (name, create); 312 get_av (name, create);
283#endif 313#endif
284 return get_av (name, create); 314 return get_av (name, create);
285} 315}
286 316
287static HV * 317static HV *
288coro_get_hv (const char *name, int create) 318coro_get_hv (pTHX_ const char *name, int create)
289{ 319{
290#if PERL_VERSION_ATLEAST (5,9,0) 320#if PERL_VERSION_ATLEAST (5,10,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 321 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_hv (name, create); 322 get_hv (name, create);
293#endif 323#endif
294 return get_hv (name, create); 324 return get_hv (name, create);
295} 325}
… …
300 AV *padlist = CvPADLIST (cv); 330 AV *padlist = CvPADLIST (cv);
301 AV *newpadlist, *newpad; 331 AV *newpadlist, *newpad;
302 332
303 newpadlist = newAV (); 333 newpadlist = newAV ();
304 AvREAL_off (newpadlist); 334 AvREAL_off (newpadlist);
305#if PERL_VERSION_ATLEAST (5,9,0) 335#if PERL_VERSION_ATLEAST (5,10,0)
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
307#else 337#else
308 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
309#endif 339#endif
310 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
311 --AvFILLp (padlist); 341 --AvFILLp (padlist);
312 342
313 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
314 av_store (newpadlist, 1, (SV *)newpad); 344 av_store (newpadlist, 1, (SV *)newpad);
315 345
316 return newpadlist; 346 return newpadlist;
317} 347}
318 348
… …
348 378
349 /* casting is fun. */ 379 /* casting is fun. */
350 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
351 free_padlist (aTHX_ padlist); 381 free_padlist (aTHX_ padlist);
352 382
353 SvREFCNT_dec (av); 383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
354 384
355 return 0; 385 return 0;
356} 386}
357 387
388#define CORO_MAGIC_type_cv 26
358#define PERL_MAGIC_coro PERL_MAGIC_ext 389#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 390
360static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 391static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0,
393 coro_cv_free
394};
361 395
362#define CORO_MAGIC(cv) \ 396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
363 SvMAGIC (cv) \ 398 ? SvMAGIC (sv) \
364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 399 : mg_find (sv, type))
365 ? SvMAGIC (cv) \ 400
366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
367 : 0 404 : 0)
368 405
369static struct coro * 406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
370SvSTATE_ (pTHX_ SV *coro) 410SvSTATE_ (pTHX_ SV *coro)
371{ 411{
372 HV *stash; 412 HV *stash;
373 MAGIC *mg; 413 MAGIC *mg;
374 414
… …
384 /* very slow, but rare, check */ 424 /* very slow, but rare, check */
385 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386 croak ("Coro::State object required"); 426 croak ("Coro::State object required");
387 } 427 }
388 428
389 mg = CORO_MAGIC (coro); 429 mg = CORO_MAGIC_state (coro);
390 return (struct coro *)mg->mg_ptr; 430 return (struct coro *)mg->mg_ptr;
391} 431}
392 432
393#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394 434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438
395/* the next two functions merely cache the padlists */ 439/* the next two functions merely cache the padlists */
396static void 440static void
397get_padlist (pTHX_ CV *cv) 441get_padlist (pTHX_ CV *cv)
398{ 442{
399 MAGIC *mg = CORO_MAGIC (cv); 443 MAGIC *mg = CORO_MAGIC_cv (cv);
400 AV *av; 444 AV *av;
401 445
402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
404 else 448 else
405 { 449 {
406#if CORO_PREFER_PERL_FUNCTIONS 450#if CORO_PREFER_PERL_FUNCTIONS
407 /* this is probably cleaner, but also slower? */ 451 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */
408 CV *cp = Perl_cv_clone (cv); 453 CV *cp = Perl_cv_clone (cv);
409 CvPADLIST (cv) = CvPADLIST (cp); 454 CvPADLIST (cv) = CvPADLIST (cp);
410 CvPADLIST (cp) = 0; 455 CvPADLIST (cp) = 0;
411 SvREFCNT_dec (cp); 456 SvREFCNT_dec (cp);
412#else 457#else
… …
416} 461}
417 462
418static void 463static void
419put_padlist (pTHX_ CV *cv) 464put_padlist (pTHX_ CV *cv)
420{ 465{
421 MAGIC *mg = CORO_MAGIC (cv); 466 MAGIC *mg = CORO_MAGIC_cv (cv);
422 AV *av; 467 AV *av;
423 468
424 if (expect_false (!mg)) 469 if (expect_false (!mg))
425 { 470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
426 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
427 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
428 mg->mg_virtual = &vtbl_coro;
429 mg->mg_obj = (SV *)newAV ();
430 }
431 471
432 av = (AV *)mg->mg_obj; 472 av = (AV *)mg->mg_obj;
433 473
434 if (expect_false (AvFILLp (av) >= AvMAX (av))) 474 if (expect_false (AvFILLp (av) >= AvMAX (av)))
435 av_extend (av, AvMAX (av) + 1); 475 av_extend (av, AvMAX (av) + 1);
… …
453 GvSV (irsgv) = slot->irsgv; 493 GvSV (irsgv) = slot->irsgv;
454 494
455 #define VAR(name,type) PL_ ## name = slot->name; 495 #define VAR(name,type) PL_ ## name = slot->name;
456 # include "state.h" 496 # include "state.h"
457 #undef VAR 497 #undef VAR
458
459 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
460 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
461 498
462 { 499 {
463 dSP; 500 dSP;
464 501
465 CV *cv; 502 CV *cv;
… …
472 CvPADLIST (cv) = (AV *)POPs; 509 CvPADLIST (cv) = (AV *)POPs;
473 } 510 }
474 511
475 PUTBACK; 512 PUTBACK;
476 } 513 }
514
515 slf_frame = c->slf_frame;
516 CORO_THROW = c->except;
477} 517}
478 518
479static void 519static void
480save_perl (pTHX_ Coro__State c) 520save_perl (pTHX_ Coro__State c)
481{ 521{
522 c->except = CORO_THROW;
523 c->slf_frame = slf_frame;
524
482 { 525 {
483 dSP; 526 dSP;
484 I32 cxix = cxstack_ix; 527 I32 cxix = cxstack_ix;
485 PERL_CONTEXT *ccstk = cxstack; 528 PERL_CONTEXT *ccstk = cxstack;
486 PERL_SI *top_si = PL_curstackinfo; 529 PERL_SI *top_si = PL_curstackinfo;
… …
504 547
505 if (expect_true (CvDEPTH (cv))) 548 if (expect_true (CvDEPTH (cv)))
506 { 549 {
507 EXTEND (SP, 3); 550 EXTEND (SP, 3);
508 PUSHs ((SV *)CvPADLIST (cv)); 551 PUSHs ((SV *)CvPADLIST (cv));
509 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 552 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
510 PUSHs ((SV *)cv); 553 PUSHs ((SV *)cv);
511 554
512 CvDEPTH (cv) = 0; 555 CvDEPTH (cv) = 0;
513 get_padlist (aTHX_ cv); 556 get_padlist (aTHX_ cv);
514 } 557 }
… …
553 #undef VAR 596 #undef VAR
554 } 597 }
555} 598}
556 599
557/* 600/*
558 * allocate various perl stacks. This is an exact copy 601 * allocate various perl stacks. This is almost an exact copy
559 * of perl.c:init_stacks, except that it uses less memory 602 * of perl.c:init_stacks, except that it uses less memory
560 * on the (sometimes correct) assumption that coroutines do 603 * on the (sometimes correct) assumption that coroutines do
561 * not usually need a lot of stackspace. 604 * not usually need a lot of stackspace.
562 */ 605 */
563#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
… …
594 637
595 New(54,PL_savestack,24,ANY); 638 New(54,PL_savestack,24,ANY);
596 PL_savestack_ix = 0; 639 PL_savestack_ix = 0;
597 PL_savestack_max = 24; 640 PL_savestack_max = 24;
598 641
599#if !PERL_VERSION_ATLEAST (5,9,0) 642#if !PERL_VERSION_ATLEAST (5,10,0)
600 New(54,PL_retstack,4,OP*); 643 New(54,PL_retstack,4,OP*);
601 PL_retstack_ix = 0; 644 PL_retstack_ix = 0;
602 PL_retstack_max = 4; 645 PL_retstack_max = 4;
603#endif 646#endif
604} 647}
… …
606 649
607/* 650/*
608 * destroy the stacks, the callchain etc... 651 * destroy the stacks, the callchain etc...
609 */ 652 */
610static void 653static void
611coro_destroy_stacks (pTHX) 654coro_destruct_stacks (pTHX)
612{ 655{
613 while (PL_curstackinfo->si_next) 656 while (PL_curstackinfo->si_next)
614 PL_curstackinfo = PL_curstackinfo->si_next; 657 PL_curstackinfo = PL_curstackinfo->si_next;
615 658
616 while (PL_curstackinfo) 659 while (PL_curstackinfo)
… …
627 670
628 Safefree (PL_tmps_stack); 671 Safefree (PL_tmps_stack);
629 Safefree (PL_markstack); 672 Safefree (PL_markstack);
630 Safefree (PL_scopestack); 673 Safefree (PL_scopestack);
631 Safefree (PL_savestack); 674 Safefree (PL_savestack);
632#if !PERL_VERSION_ATLEAST (5,9,0) 675#if !PERL_VERSION_ATLEAST (5,10,0)
633 Safefree (PL_retstack); 676 Safefree (PL_retstack);
634#endif 677#endif
635} 678}
636 679
637static size_t 680static size_t
… …
653 #undef VAR 696 #undef VAR
654 } 697 }
655 else 698 else
656 slot = coro->slot; 699 slot = coro->slot;
657 700
701 if (slot)
702 {
658 rss += sizeof (slot->curstackinfo); 703 rss += sizeof (slot->curstackinfo);
659 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
660 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661 rss += slot->tmps_max * sizeof (SV *); 706 rss += slot->tmps_max * sizeof (SV *);
662 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663 rss += slot->scopestack_max * sizeof (I32); 708 rss += slot->scopestack_max * sizeof (I32);
664 rss += slot->savestack_max * sizeof (ANY); 709 rss += slot->savestack_max * sizeof (ANY);
665 710
666#if !PERL_VERSION_ATLEAST (5,9,0) 711#if !PERL_VERSION_ATLEAST (5,10,0)
667 rss += slot->retstack_max * sizeof (OP *); 712 rss += slot->retstack_max * sizeof (OP *);
668#endif 713#endif
714 }
669 } 715 }
670 716
671 return rss; 717 return rss;
672} 718}
673 719
674/** coroutine stack handling ************************************************/ 720/** coroutine stack handling ************************************************/
675 721
722static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
723static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
725
726/* apparently < 5.8.8 */
727#ifndef MgPV_nolen_const
728#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
729 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
730 (const char*)(mg)->mg_ptr)
731#endif
732
733/*
734 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide
737 * readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */
676static void 742static int
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{
745 const char *s = MgPV_nolen_const (mg);
746
747 if (*s == '_')
748 {
749 SV **svp = 0;
750
751 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
752 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
753
754 if (svp)
755 {
756 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
757 return 0;
758 }
759 }
760
761 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
762}
763
764static int
765coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
766{
767 const char *s = MgPV_nolen_const (mg);
768
769 if (*s == '_')
770 {
771 SV **svp = 0;
772
773 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
774 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
775
776 if (svp)
777 {
778 SV *old = *svp;
779 *svp = 0;
780 SvREFCNT_dec (old);
781 return 0;
782 }
783 }
784
785 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
786}
787
788static int
789coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
790{
791 const char *s = MgPV_nolen_const (mg);
792
793 if (*s == '_')
794 {
795 SV **svp = 0;
796
797 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799
800 if (svp)
801 {
802 SV *old = *svp;
803 *svp = newSVsv (sv);
804 SvREFCNT_dec (old);
805 return 0;
806 }
807 }
808
809 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
810}
811
812static void
813prepare_nop (pTHX_ struct coro_transfer_args *ta)
814{
815 /* kind of mega-hacky, but works */
816 ta->next = ta->prev = (struct coro *)ta;
817}
818
819static int
820slf_check_nop (pTHX_ struct CoroSLF *frame)
821{
822 return 0;
823}
824
825static UNOP coro_setup_op;
826
827static void NOINLINE /* noinline to keep it out of the transfer fast path */
677coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
678{ 829{
679 /* 830 /*
680 * emulate part of the perl startup here. 831 * emulate part of the perl startup here.
681 */ 832 */
… …
688 PL_curpm = 0; 839 PL_curpm = 0;
689 PL_curpad = 0; 840 PL_curpad = 0;
690 PL_localizing = 0; 841 PL_localizing = 0;
691 PL_dirty = 0; 842 PL_dirty = 0;
692 PL_restartop = 0; 843 PL_restartop = 0;
693 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 844#if PERL_VERSION_ATLEAST (5,10,0)
694 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 845 PL_parser = 0;
846#endif
847
848 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
695 851
696 GvSV (PL_defgv) = newSV (0); 852 GvSV (PL_defgv) = newSV (0);
697 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
698 GvSV (PL_errgv) = newSV (0); 854 GvSV (PL_errgv) = newSV (0);
699 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
700 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
701 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
702 858
703 { 859 {
704 dSP; 860 dSP;
705 LOGOP myop; 861 UNOP myop;
706 862
707 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
708 myop.op_next = Nullop; 864 myop.op_next = Nullop;
709 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
710 866
711 PUSHMARK (SP); 867 PUSHMARK (SP);
712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
713 PUTBACK; 869 PUTBACK;
714 PL_op = (OP *)&myop; 870 PL_op = (OP *)&myop;
715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
716 SPAGAIN; 872 SPAGAIN;
717
718 /*
719 * now its very tricky. the "tail" of the next transfer might end up
720 * either in a new cctx, or an existing one.
721 * in case of an existing one we have to take care of whatever
722 * entersub and transfer do to the perl stack.
723 */
724 ENTER;
725 EXTEND (SP, 4);
726 PUSHs ((SV *)0); /* items */
727 PUSHs ((SV *)0); /* ix, set_stacklevel */
728 PUSHs ((SV *)(sp - PL_stack_base + 1)); /* ax */
729 PUSHs ((SV *)0); /* again */
730 PUTBACK;
731 } 873 }
732}
733 874
875 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM;
884 coro_setup_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */
886
887 PL_op = (OP *)&coro_setup_op;
888
889 /* copy throw, in case it was set before coro_setup */
890 CORO_THROW = coro->except;
891}
892
734static void 893static void
735coro_destroy (pTHX_ struct coro *coro) 894coro_destruct (pTHX_ struct coro *coro)
736{ 895{
737 if (!IN_DESTRUCT) 896 if (!IN_DESTRUCT)
738 { 897 {
739 /* restore all saved variables and stuff */ 898 /* restore all saved variables and stuff */
740 LEAVE_SCOPE (0); 899 LEAVE_SCOPE (0);
… …
760 919
761 SvREFCNT_dec (PL_diehook); 920 SvREFCNT_dec (PL_diehook);
762 SvREFCNT_dec (PL_warnhook); 921 SvREFCNT_dec (PL_warnhook);
763 922
764 SvREFCNT_dec (coro->saved_deffh); 923 SvREFCNT_dec (coro->saved_deffh);
765 SvREFCNT_dec (coro->throw); 924 SvREFCNT_dec (CORO_THROW);
766 925
767 coro_destroy_stacks (aTHX); 926 coro_destruct_stacks (aTHX);
768} 927}
769 928
770static void 929INLINE void
771free_coro_mortal (pTHX) 930free_coro_mortal (pTHX)
772{ 931{
773 if (expect_true (coro_mortal)) 932 if (expect_true (coro_mortal))
774 { 933 {
775 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
… …
780static int 939static int
781runops_trace (pTHX) 940runops_trace (pTHX)
782{ 941{
783 COP *oldcop = 0; 942 COP *oldcop = 0;
784 int oldcxix = -2; 943 int oldcxix = -2;
785 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
786 coro_cctx *cctx = coro->cctx; 945 coro_cctx *cctx = coro->cctx;
787 946
788 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
789 { 948 {
790 PERL_ASYNC_CHECK (); 949 PERL_ASYNC_CHECK ();
… …
809 : cx->blk_gimme == G_SCALAR ? bot + 1 968 : cx->blk_gimme == G_SCALAR ? bot + 1
810 : bot; 969 : bot;
811 970
812 av_extend (av, top - bot); 971 av_extend (av, top - bot);
813 while (bot < top) 972 while (bot < top)
814 av_push (av, SvREFCNT_inc (*bot++)); 973 av_push (av, SvREFCNT_inc_NN (*bot++));
815 974
816 PL_runops = RUNOPS_DEFAULT; 975 PL_runops = RUNOPS_DEFAULT;
817 ENTER; 976 ENTER;
818 SAVETMPS; 977 SAVETMPS;
819 EXTEND (SP, 3); 978 EXTEND (SP, 3);
820 PUSHMARK (SP); 979 PUSHMARK (SP);
821 PUSHs (&PL_sv_no); 980 PUSHs (&PL_sv_no);
822 PUSHs (fullname); 981 PUSHs (fullname);
823 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 982 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
824 PUTBACK; 983 PUTBACK;
825 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 984 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
826 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 985 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
827 SPAGAIN; 986 SPAGAIN;
828 FREETMPS; 987 FREETMPS;
829 LEAVE; 988 LEAVE;
830 PL_runops = runops_trace; 989 PL_runops = runops_trace;
… …
857 SAVETMPS; 1016 SAVETMPS;
858 EXTEND (SP, 3); 1017 EXTEND (SP, 3);
859 PUSHMARK (SP); 1018 PUSHMARK (SP);
860 PUSHs (&PL_sv_yes); 1019 PUSHs (&PL_sv_yes);
861 PUSHs (fullname); 1020 PUSHs (fullname);
862 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
863 PUTBACK; 1022 PUTBACK;
864 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
865 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
866 SPAGAIN; 1025 SPAGAIN;
867 FREETMPS; 1026 FREETMPS;
868 LEAVE; 1027 LEAVE;
869 PL_runops = runops_trace; 1028 PL_runops = runops_trace;
… …
883 PL_runops = RUNOPS_DEFAULT; 1042 PL_runops = RUNOPS_DEFAULT;
884 PUSHMARK (SP); 1043 PUSHMARK (SP);
885 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1044 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
886 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1045 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
887 PUTBACK; 1046 PUTBACK;
888 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1047 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
889 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1048 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
890 SPAGAIN; 1049 SPAGAIN;
891 FREETMPS; 1050 FREETMPS;
892 LEAVE; 1051 LEAVE;
893 PL_runops = runops_trace; 1052 PL_runops = runops_trace;
… …
899 1058
900 TAINT_NOT; 1059 TAINT_NOT;
901 return 0; 1060 return 0;
902} 1061}
903 1062
904/* inject a fake call to Coro::State::_cctx_init into the execution */ 1063static struct coro_cctx *cctx_ssl_cctx;
905/* _cctx_init should be careful, as it could be called at almost any time */ 1064static struct CoroSLF cctx_ssl_frame;
906/* during execution of a perl program */ 1065
1066static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0;
1071}
1072
1073static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{
1076 *frame = cctx_ssl_frame;
1077
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079}
1080
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
907static void NOINLINE 1082static void NOINLINE
908cctx_prepare (pTHX_ coro_cctx *cctx) 1083cctx_prepare (pTHX_ coro_cctx *cctx)
909{ 1084{
910 dSP;
911 LOGOP myop;
912
913 PL_top_env = &PL_start_env; 1085 PL_top_env = &PL_start_env;
914 1086
915 if (cctx->flags & CC_TRACE) 1087 if (cctx->flags & CC_TRACE)
916 PL_runops = runops_trace; 1088 PL_runops = runops_trace;
917 1089
918 Zero (&myop, 1, LOGOP); 1090 /* we already must be executing an SLF op, there is no other valid way
919 myop.op_next = PL_op; 1091 * that can lead to creation of a new cctx */
920 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
921 1094
922 PUSHMARK (SP); 1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
923 EXTEND (SP, 2); 1096 cctx_ssl_cctx = cctx;
924 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1097 cctx_ssl_frame = slf_frame;
925 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1098
926 PUTBACK; 1099 slf_frame.prepare = slf_prepare_set_stacklevel;
927 PL_op = (OP *)&myop; 1100 slf_frame.check = slf_check_set_stacklevel;
928 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1101}
929 SPAGAIN; 1102
1103/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void
1105transfer_tail (pTHX)
1106{
1107 free_coro_mortal (aTHX);
930} 1108}
931 1109
932/* 1110/*
933 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
934 */ 1112 */
935static void 1113static void
936cctx_run (void *arg) 1114cctx_run (void *arg)
937{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
938 dTHX; 1122 dTHX;
939 1123
940 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
941 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
942
943 /* we now skip the entersub that lead to transfer() */
944 PL_op = PL_op->op_next; 1126 /* PL_nop = PL_nop->op_next */
945 1127
946 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
947 cctx_prepare (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
948 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX);
1133
949 /* somebody or something will hit me for both perl_run and PL_restartop */ 1134 /* somebody or something will hit me for both perl_run and PL_restartop */
950 PL_restartop = PL_op; 1135 PL_restartop = PL_op;
951 perl_run (PL_curinterp); 1136 perl_run (PL_curinterp);
952 1137
953 /* 1138 /*
954 * If perl-run returns we assume exit() was being called or the coro 1139 * If perl-run returns we assume exit() was being called or the coro
955 * fell off the end, which seems to be the only valid (non-bug) 1140 * fell off the end, which seems to be the only valid (non-bug)
956 * reason for perl_run to return. We try to exit by jumping to the 1141 * reason for perl_run to return. We try to exit by jumping to the
957 * bootstrap-time "top" top_env, as we cannot restore the "main" 1142 * bootstrap-time "top" top_env, as we cannot restore the "main"
958 * coroutine as Coro has no such concept 1143 * coroutine as Coro has no such concept
959 */ 1144 */
960 PL_top_env = main_top_env; 1145 PL_top_env = main_top_env;
961 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 }
962} 1148}
963 1149
964static coro_cctx * 1150static coro_cctx *
965cctx_new () 1151cctx_new ()
966{ 1152{
967 coro_cctx *cctx; 1153 coro_cctx *cctx;
1154
1155 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx);
1157
1158 cctx->gen = cctx_gen;
1159 cctx->flags = 0;
1160 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1161
1162 return cctx;
1163}
1164
1165/* create a new cctx only suitable as source */
1166static coro_cctx *
1167cctx_new_empty ()
1168{
1169 coro_cctx *cctx = cctx_new ();
1170
1171 cctx->sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0);
1173
1174 return cctx;
1175}
1176
1177/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx *
1179cctx_new_run ()
1180{
1181 coro_cctx *cctx = cctx_new ();
968 void *stack_start; 1182 void *stack_start;
969 size_t stack_size; 1183 size_t stack_size;
970 1184
971 ++cctx_count;
972
973 Newz (0, cctx, 1, coro_cctx);
974
975#if HAVE_MMAP 1185#if HAVE_MMAP
976 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
977 /* mmap supposedly does allocate-on-write for us */ 1187 /* mmap supposedly does allocate-on-write for us */
978 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
979 1189
980 if (cctx->sptr != (void *)-1) 1190 if (cctx->sptr != (void *)-1)
981 { 1191 {
982# if CORO_STACKGUARD 1192 #if CORO_STACKGUARD
983 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
984# endif 1194 #endif
985 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1195 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
986 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1196 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
987 cctx->flags |= CC_MAPPED; 1197 cctx->flags |= CC_MAPPED;
988 } 1198 }
989 else 1199 else
990#endif 1200#endif
991 { 1201 {
992 cctx->ssize = coro_stacksize * (long)sizeof (long); 1202 cctx->ssize = cctx_stacksize * (long)sizeof (long);
993 New (0, cctx->sptr, coro_stacksize, long); 1203 New (0, cctx->sptr, cctx_stacksize, long);
994 1204
995 if (!cctx->sptr) 1205 if (!cctx->sptr)
996 { 1206 {
997 perror ("FATAL: unable to allocate stack for coroutine"); 1207 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
998 _exit (EXIT_FAILURE); 1208 _exit (EXIT_FAILURE);
999 } 1209 }
1000 1210
1001 stack_start = cctx->sptr; 1211 stack_start = cctx->sptr;
1002 stack_size = cctx->ssize; 1212 stack_size = cctx->ssize;
1003 } 1213 }
1004 1214
1005 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1215 #if CORO_USE_VALGRIND
1216 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1217 #endif
1218
1006 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1219 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1007 1220
1008 return cctx; 1221 return cctx;
1009} 1222}
1010 1223
… …
1013{ 1226{
1014 if (!cctx) 1227 if (!cctx)
1015 return; 1228 return;
1016 1229
1017 --cctx_count; 1230 --cctx_count;
1231 coro_destroy (&cctx->cctx);
1018 1232
1233 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr)
1235 {
1019#if CORO_USE_VALGRIND 1236 #if CORO_USE_VALGRIND
1020 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1237 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1021#endif 1238 #endif
1022 1239
1023#if HAVE_MMAP 1240#if HAVE_MMAP
1024 if (cctx->flags & CC_MAPPED) 1241 if (cctx->flags & CC_MAPPED)
1025 munmap (cctx->sptr, cctx->ssize); 1242 munmap (cctx->sptr, cctx->ssize);
1026 else 1243 else
1027#endif 1244#endif
1028 Safefree (cctx->sptr); 1245 Safefree (cctx->sptr);
1246 }
1029 1247
1030 Safefree (cctx); 1248 Safefree (cctx);
1031} 1249}
1032 1250
1033/* wether this cctx should be destructed */ 1251/* wether this cctx should be destructed */
1034#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1035 1253
1036static coro_cctx * 1254static coro_cctx *
1037cctx_get (pTHX_ int gimme) 1255cctx_get (pTHX)
1038{ 1256{
1039 while (expect_true (cctx_first[gimme])) 1257 while (expect_true (cctx_first))
1040 { 1258 {
1041 coro_cctx *cctx = cctx_first[gimme]; 1259 coro_cctx *cctx = cctx_first;
1042 cctx_first[gimme] = cctx->next; 1260 cctx_first = cctx->next;
1043 --cctx_idle[gimme]; 1261 --cctx_idle;
1044 1262
1045 if (expect_true (!CCTX_EXPIRED (cctx))) 1263 if (expect_true (!CCTX_EXPIRED (cctx)))
1046 return cctx; 1264 return cctx;
1047 1265
1048 cctx_destroy (cctx); 1266 cctx_destroy (cctx);
1049 } 1267 }
1050 1268
1051 assert (!gimme);
1052 return cctx_new (); 1269 return cctx_new_run ();
1053} 1270}
1054 1271
1055static void 1272static void
1056cctx_put (coro_cctx *cctx, int gimme) 1273cctx_put (coro_cctx *cctx)
1057{ 1274{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1276
1058 /* free another cctx if overlimit */ 1277 /* free another cctx if overlimit */
1059 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX)) 1278 if (expect_false (cctx_idle >= cctx_max_idle))
1060 { 1279 {
1061 coro_cctx *first = cctx_first[gimme]; 1280 coro_cctx *first = cctx_first;
1062 cctx_first[gimme] = first->next; 1281 cctx_first = first->next;
1063 --cctx_idle[gimme]; 1282 --cctx_idle;
1064 1283
1065 cctx_destroy (first); 1284 cctx_destroy (first);
1066 } 1285 }
1067 1286
1068 ++cctx_idle[gimme]; 1287 ++cctx_idle;
1069 cctx->next = cctx_first[gimme]; 1288 cctx->next = cctx_first;
1070 cctx_first[gimme] = cctx; 1289 cctx_first = cctx;
1071} 1290}
1072 1291
1073/** coroutine switching *****************************************************/ 1292/** coroutine switching *****************************************************/
1074 1293
1075static void 1294static void
1076transfer_check (pTHX_ struct coro *prev, struct coro *next) 1295transfer_check (pTHX_ struct coro *prev, struct coro *next)
1077{ 1296{
1297 /* TODO: throwing up here is considered harmful */
1298
1078 if (expect_true (prev != next)) 1299 if (expect_true (prev != next))
1079 { 1300 {
1080 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1081 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1082 1303
1083 if (expect_false (next->flags & CF_RUNNING)) 1304 if (expect_false (next->flags & CF_RUNNING))
1084 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1085 1306
1086 if (expect_false (next->flags & CF_DESTROYED)) 1307 if (expect_false (next->flags & CF_DESTROYED))
1087 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1088 1309
1089 if (
1090#if PERL_VERSION_ATLEAST (5,9,0) 1310#if !PERL_VERSION_ATLEAST (5,10,0)
1091 expect_false (PL_parser)
1092#else
1093 expect_false (PL_lex_state != LEX_NOTPARSING) 1311 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1094#endif
1095 )
1096 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif
1097 } 1314 }
1098} 1315}
1099 1316
1100/* always use the TRANSFER macro */ 1317/* always use the TRANSFER macro */
1101static void NOINLINE 1318static void NOINLINE /* noinline so we have a fixed stackframe */
1102transfer (pTHX_ struct coro *prev, struct coro *next) 1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1103{ 1320{
1104 dSTACKLEVEL; 1321 dSTACKLEVEL;
1105 1322
1106 /* sometimes transfer is only called to set idle_sp */ 1323 /* sometimes transfer is only called to set idle_sp */
1107 if (expect_false (!next)) 1324 if (expect_false (!next))
… …
1113 { 1330 {
1114 coro_cctx *prev__cctx; 1331 coro_cctx *prev__cctx;
1115 1332
1116 if (expect_false (prev->flags & CF_NEW)) 1333 if (expect_false (prev->flags & CF_NEW))
1117 { 1334 {
1118 /* create a new empty context */ 1335 /* create a new empty/source context */
1119 Newz (0, prev->cctx, 1, coro_cctx); 1336 prev->cctx = cctx_new_empty ();
1120 prev->flags &= ~CF_NEW; 1337 prev->flags &= ~CF_NEW;
1121 prev->flags |= CF_RUNNING; 1338 prev->flags |= CF_RUNNING;
1122 } 1339 }
1123 1340
1124 prev->flags &= ~CF_RUNNING; 1341 prev->flags &= ~CF_RUNNING;
1125 next->flags |= CF_RUNNING; 1342 next->flags |= CF_RUNNING;
1126 1343
1127 LOCK; 1344 /* first get rid of the old state */
1345 save_perl (aTHX_ prev);
1128 1346
1129 if (expect_false (next->flags & CF_NEW)) 1347 if (expect_false (next->flags & CF_NEW))
1130 { 1348 {
1131 /* need to start coroutine */ 1349 /* need to start coroutine */
1132 next->flags &= ~CF_NEW; 1350 next->flags &= ~CF_NEW;
1133 /* first get rid of the old state */
1134 save_perl (aTHX_ prev);
1135 /* setup coroutine call */ 1351 /* setup coroutine call */
1136 coro_setup (aTHX_ next); 1352 coro_setup (aTHX_ next);
1137 } 1353 }
1138 else 1354 else
1355 load_perl (aTHX_ next);
1356
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */
1360 if (expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE)
1363 && !force_cctx
1364 ))
1139 { 1365 {
1140 /* coroutine already started */
1141 save_perl (aTHX_ prev);
1142 load_perl (aTHX_ next);
1143 }
1144
1145 prev__cctx = prev->cctx;
1146
1147 /* possibly "free" the cctx */
1148 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1149 {
1150 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1151 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1152 1368
1153 prev->cctx = 0; 1369 prev->cctx = 0;
1154 1370
1155 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1156 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1157 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1373 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1158 if (!next->cctx) 1374 if (!next->cctx)
1159 next->cctx = cctx_get (aTHX_ next->gimme); 1375 next->cctx = cctx_get (aTHX);
1160 1376
1161 cctx_put (prev__cctx, prev->gimme); 1377 cctx_put (prev__cctx);
1162 } 1378 }
1163 1379
1164 ++next->usecount; 1380 ++next->usecount;
1165 1381
1166 if (expect_true (!next->cctx)) 1382 if (expect_true (!next->cctx))
1167 next->cctx = cctx_get (aTHX_ next->gimme); 1383 next->cctx = cctx_get (aTHX);
1168 1384
1169 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1170 { 1386 {
1171 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1172 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1173 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1174 } 1390 }
1175 1391
1176 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1177 UNLOCK;
1178
1179 if (expect_false (prev->throw || next->throw))
1180 {
1181 struct coro *coro = SvSTATE (coro_current);
1182
1183 if (coro->throw)
1184 {
1185 SV *exception = coro->throw;
1186 coro->throw = 0;
1187 sv_setsv (ERRSV, exception);
1188 croak (0);
1189 }
1190 }
1191 } 1393 }
1192} 1394}
1193 1395
1194struct transfer_args
1195{
1196 struct coro *prev, *next;
1197};
1198
1199#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1200#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1201 1398
1202/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
1203 1400
1204static int 1401static int
1205coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1206{ 1403{
1207 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1208 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1209 1409
1210 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1211 1411
1212 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1213 { 1413 {
1214 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1215 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1216 LOCK;
1217 --coro_nready; 1416 --coro_nready;
1218 UNLOCK;
1219 } 1417 }
1220 else 1418 else
1221 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1222 1420
1223 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1224 { 1422 {
1225 struct coro temp; 1423 struct coro temp;
1226 1424
1227 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1228 croak ("FATAL: tried to destroy currently running coroutine");
1229 1426
1230 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1231 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1232 1429
1233 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1234 1431
1235 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1236 1433
1237 coro->slot = 0; 1434 coro->slot = 0;
1238 } 1435 }
… …
1284# define MGf_DUP 0 1481# define MGf_DUP 0
1285#endif 1482#endif
1286}; 1483};
1287 1484
1288static void 1485static void
1289prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1290{ 1487{
1291 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1292 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1293 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1294} 1491}
1295 1492
1296static void 1493static void
1297api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1298{ 1495{
1299 dTHX;
1300 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1301 1497
1302 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1303 TRANSFER (ta); 1499 TRANSFER (ta, 1);
1304} 1500}
1305 1501
1306/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1307 1503
1308static void 1504INLINE void
1309coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1310{ 1506{
1311 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1312} 1508}
1313 1509
1314static SV * 1510INLINE SV *
1315coro_deq (pTHX_ int min_prio) 1511coro_deq (pTHX)
1316{ 1512{
1317 int prio = PRIO_MAX - PRIO_MIN; 1513 int prio;
1318 1514
1319 min_prio -= PRIO_MIN;
1320 if (min_prio < 0)
1321 min_prio = 0;
1322
1323 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1324 if (AvFILLp (coro_ready [prio]) >= 0) 1516 if (AvFILLp (coro_ready [prio]) >= 0)
1325 return av_shift (coro_ready [prio]); 1517 return av_shift (coro_ready [prio]);
1326 1518
1327 return 0; 1519 return 0;
1328} 1520}
1329 1521
1330static int 1522static int
1331api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1332{ 1524{
1333 dTHX;
1334 struct coro *coro; 1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1335 1528
1336 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
1337 coro_sv = SvRV (coro_sv); 1530 coro_sv = SvRV (coro_sv);
1338 1531
1339 coro = SvSTATE (coro_sv); 1532 coro = SvSTATE (coro_sv);
… …
1341 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1342 return 0; 1535 return 0;
1343 1536
1344 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1345 1538
1346 LOCK; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1347 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro);
1348 ++coro_nready; 1543 ++coro_nready;
1349 UNLOCK; 1544
1545 if (sv_hook)
1546 {
1547 dSP;
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1350 1562
1351 return 1; 1563 return 1;
1352} 1564}
1353 1565
1354static int 1566static int
1355api_is_ready (SV *coro_sv) 1567api_is_ready (pTHX_ SV *coro_sv)
1356{ 1568{
1357 dTHX;
1358 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1569 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1359} 1570}
1360 1571
1361static void 1572INLINE void
1362prepare_schedule (pTHX_ struct transfer_args *ta) 1573prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1363{ 1574{
1364 SV *prev_sv, *next_sv; 1575 SV *prev_sv, *next_sv;
1365 1576
1366 for (;;) 1577 for (;;)
1367 { 1578 {
1368 LOCK;
1369 next_sv = coro_deq (aTHX_ PRIO_MIN); 1579 next_sv = coro_deq (aTHX);
1370 1580
1371 /* nothing to schedule: call the idle handler */ 1581 /* nothing to schedule: call the idle handler */
1372 if (expect_false (!next_sv)) 1582 if (expect_false (!next_sv))
1373 { 1583 {
1374 dSP; 1584 dSP;
1375 UNLOCK;
1376 1585
1377 ENTER; 1586 ENTER;
1378 SAVETMPS; 1587 SAVETMPS;
1379 1588
1380 PUSHMARK (SP); 1589 PUSHMARK (SP);
1381 PUTBACK; 1590 PUTBACK;
1382 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1383 1592
1384 FREETMPS; 1593 FREETMPS;
1385 LEAVE; 1594 LEAVE;
1386 continue; 1595 continue;
1387 } 1596 }
1388 1597
1389 ta->next = SvSTATE (next_sv); 1598 ta->next = SvSTATE_hv (next_sv);
1390 1599
1391 /* cannot transfer to destroyed coros, skip and look for next */ 1600 /* cannot transfer to destroyed coros, skip and look for next */
1392 if (expect_false (ta->next->flags & CF_DESTROYED)) 1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1393 { 1602 {
1394 UNLOCK;
1395 SvREFCNT_dec (next_sv); 1603 SvREFCNT_dec (next_sv);
1396 /* coro_nready is already taken care of by destroy */ 1604 /* coro_nready has already been taken care of by destroy */
1397 continue; 1605 continue;
1398 } 1606 }
1399 1607
1400 --coro_nready; 1608 --coro_nready;
1401 UNLOCK;
1402 break; 1609 break;
1403 } 1610 }
1404 1611
1405 /* free this only after the transfer */ 1612 /* free this only after the transfer */
1406 prev_sv = SvRV (coro_current); 1613 prev_sv = SvRV (coro_current);
1407 ta->prev = SvSTATE (prev_sv); 1614 ta->prev = SvSTATE_hv (prev_sv);
1408 TRANSFER_CHECK (*ta); 1615 TRANSFER_CHECK (*ta);
1409 assert (ta->next->flags & CF_READY); 1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1410 ta->next->flags &= ~CF_READY; 1617 ta->next->flags &= ~CF_READY;
1411 SvRV_set (coro_current, next_sv); 1618 SvRV_set (coro_current, next_sv);
1412 1619
1413 LOCK;
1414 free_coro_mortal (aTHX); 1620 free_coro_mortal (aTHX);
1415 coro_mortal = prev_sv; 1621 coro_mortal = prev_sv;
1416 UNLOCK;
1417} 1622}
1418 1623
1419static void 1624INLINE void
1420prepare_cede (pTHX_ struct transfer_args *ta) 1625prepare_cede (pTHX_ struct coro_transfer_args *ta)
1421{ 1626{
1422 api_ready (coro_current); 1627 api_ready (aTHX_ coro_current);
1423 prepare_schedule (aTHX_ ta); 1628 prepare_schedule (aTHX_ ta);
1424} 1629}
1425 1630
1631INLINE void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{
1634 SV *prev = SvRV (coro_current);
1635
1636 if (coro_nready)
1637 {
1638 prepare_schedule (aTHX_ ta);
1639 api_ready (aTHX_ prev);
1640 }
1641 else
1642 prepare_nop (aTHX_ ta);
1643}
1644
1645static void
1646api_schedule (pTHX)
1647{
1648 struct coro_transfer_args ta;
1649
1650 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1);
1652}
1653
1426static int 1654static int
1427prepare_cede_notself (pTHX_ struct transfer_args *ta) 1655api_cede (pTHX)
1428{ 1656{
1429 if (coro_nready) 1657 struct coro_transfer_args ta;
1430 { 1658
1431 SV *prev = SvRV (coro_current);
1432 prepare_schedule (aTHX_ ta); 1659 prepare_cede (aTHX_ &ta);
1433 api_ready (prev); 1660
1661 if (expect_true (ta.prev != ta.next))
1662 {
1663 TRANSFER (ta, 1);
1434 return 1; 1664 return 1;
1435 } 1665 }
1436 else 1666 else
1437 return 0; 1667 return 0;
1438} 1668}
1439 1669
1440static void
1441api_schedule (void)
1442{
1443 dTHX;
1444 struct transfer_args ta;
1445
1446 prepare_schedule (aTHX_ &ta);
1447 TRANSFER (ta);
1448}
1449
1450static int 1670static int
1451api_cede (void) 1671api_cede_notself (pTHX)
1452{ 1672{
1453 dTHX; 1673 if (coro_nready)
1674 {
1454 struct transfer_args ta; 1675 struct coro_transfer_args ta;
1455 1676
1456 prepare_cede (aTHX_ &ta); 1677 prepare_cede_notself (aTHX_ &ta);
1457
1458 if (expect_true (ta.prev != ta.next))
1459 {
1460 TRANSFER (ta); 1678 TRANSFER (ta, 1);
1461 return 1; 1679 return 1;
1462 } 1680 }
1463 else 1681 else
1464 return 0; 1682 return 0;
1465} 1683}
1466 1684
1467static int 1685static void
1468api_cede_notself (void)
1469{
1470 dTHX;
1471 struct transfer_args ta;
1472
1473 if (prepare_cede_notself (aTHX_ &ta))
1474 {
1475 TRANSFER (ta);
1476 return 1;
1477 }
1478 else
1479 return 0;
1480}
1481
1482static void
1483api_trace (SV *coro_sv, int flags) 1686api_trace (pTHX_ SV *coro_sv, int flags)
1484{ 1687{
1485 dTHX;
1486 struct coro *coro = SvSTATE (coro_sv); 1688 struct coro *coro = SvSTATE (coro_sv);
1487 1689
1488 if (flags & CC_TRACE) 1690 if (flags & CC_TRACE)
1489 { 1691 {
1490 if (!coro->cctx) 1692 if (!coro->cctx)
1491 coro->cctx = cctx_new (); 1693 coro->cctx = cctx_new_run ();
1492 else if (!(coro->cctx->flags & CC_TRACE)) 1694 else if (!(coro->cctx->flags & CC_TRACE))
1493 croak ("cannot enable tracing on coroutine with custom stack"); 1695 croak ("cannot enable tracing on coroutine with custom stack,");
1494 1696
1495 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1496 } 1698 }
1497 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1498 { 1700 {
… …
1503 else 1705 else
1504 coro->slot->runops = RUNOPS_DEFAULT; 1706 coro->slot->runops = RUNOPS_DEFAULT;
1505 } 1707 }
1506} 1708}
1507 1709
1710/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */
1712
1713static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1714static const CV *slf_cv;
1715static SV **slf_argv;
1716static int slf_argc, slf_arga; /* count, allocated */
1717static I32 slf_ax; /* top of stack, for restore */
1718
1719/* this restores the stack in the case we patched the entersub, to */
1720/* recreate the stack frame as perl will on following calls */
1721/* since entersub cleared the stack */
1722static OP *
1723pp_restore (pTHX)
1724{
1725 int i;
1726 SV **SP = PL_stack_base + slf_ax;
1727
1728 PUSHMARK (SP);
1729
1730 EXTEND (SP, slf_argc + 1);
1731
1732 for (i = 0; i < slf_argc; ++i)
1733 PUSHs (sv_2mortal (slf_argv [i]));
1734
1735 PUSHs ((SV *)CvGV (slf_cv));
1736
1737 RETURNOP (slf_restore.op_first);
1738}
1739
1740static void
1741slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1742{
1743 SV **arg = (SV **)slf_frame.data;
1744
1745 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1746}
1747
1748static void
1749slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1750{
1751 if (items != 2)
1752 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1753
1754 frame->prepare = slf_prepare_transfer;
1755 frame->check = slf_check_nop;
1756 frame->data = (void *)arg; /* let's hope it will stay valid */
1757}
1758
1759static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{
1762 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop;
1764}
1765
1766static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{
1769 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop;
1771}
1772
1773static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{
1776 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop;
1778}
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* exception handling */
1845 if (expect_false (CORO_THROW))
1846 {
1847 SV *exception = sv_2mortal (CORO_THROW);
1848
1849 CORO_THROW = 0;
1850 sv_setsv (ERRSV, exception);
1851 croak (0);
1852 }
1853
1854 /* return value handling - mostly like entersub */
1855 /* make sure we put something on the stack in scalar context */
1856 if (GIMME_V == G_SCALAR)
1857 {
1858 dSP;
1859 SV **bot = PL_stack_base + checkmark;
1860
1861 if (sp == bot) /* too few, push undef */
1862 bot [1] = &PL_sv_undef;
1863 else if (sp != bot + 1) /* too many, take last one */
1864 bot [1] = *sp;
1865
1866 SP = bot + 1;
1867
1868 PUTBACK;
1869 }
1870
1871 return NORMAL;
1872}
1873
1874static void
1875api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1876{
1877 int i;
1878 SV **arg = PL_stack_base + ax;
1879 int items = PL_stack_sp - arg + 1;
1880
1881 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1882
1883 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1884 && PL_op->op_ppaddr != pp_slf)
1885 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1886
1887 CvFLAGS (cv) |= CVf_SLF;
1888 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1889 slf_cv = cv;
1890
1891 /* we patch the op, and then re-run the whole call */
1892 /* we have to put the same argument on the stack for this to work */
1893 /* and this will be done by pp_restore */
1894 slf_restore.op_next = (OP *)&slf_restore;
1895 slf_restore.op_type = OP_CUSTOM;
1896 slf_restore.op_ppaddr = pp_restore;
1897 slf_restore.op_first = PL_op;
1898
1899 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1900
1901 if (PL_op->op_flags & OPf_STACKED)
1902 {
1903 if (items > slf_arga)
1904 {
1905 slf_arga = items;
1906 free (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *));
1908 }
1909
1910 slf_argc = items;
1911
1912 for (i = 0; i < items; ++i)
1913 slf_argv [i] = SvREFCNT_inc (arg [i]);
1914 }
1915 else
1916 slf_argc = 0;
1917
1918 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1920
1921 PL_op = (OP *)&slf_restore;
1922}
1923
1924/*****************************************************************************/
1925/* PerlIO::cede */
1926
1927typedef struct
1928{
1929 PerlIOBuf base;
1930 NV next, every;
1931} PerlIOCede;
1932
1933static IV
1934PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1935{
1936 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1937
1938 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1939 self->next = nvtime () + self->every;
1940
1941 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1942}
1943
1944static SV *
1945PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1946{
1947 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1948
1949 return newSVnv (self->every);
1950}
1951
1952static IV
1953PerlIOCede_flush (pTHX_ PerlIO *f)
1954{
1955 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1956 double now = nvtime ();
1957
1958 if (now >= self->next)
1959 {
1960 api_cede (aTHX);
1961 self->next = now + self->every;
1962 }
1963
1964 return PerlIOBuf_flush (aTHX_ f);
1965}
1966
1967static PerlIO_funcs PerlIO_cede =
1968{
1969 sizeof(PerlIO_funcs),
1970 "cede",
1971 sizeof(PerlIOCede),
1972 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1973 PerlIOCede_pushed,
1974 PerlIOBuf_popped,
1975 PerlIOBuf_open,
1976 PerlIOBase_binmode,
1977 PerlIOCede_getarg,
1978 PerlIOBase_fileno,
1979 PerlIOBuf_dup,
1980 PerlIOBuf_read,
1981 PerlIOBuf_unread,
1982 PerlIOBuf_write,
1983 PerlIOBuf_seek,
1984 PerlIOBuf_tell,
1985 PerlIOBuf_close,
1986 PerlIOCede_flush,
1987 PerlIOBuf_fill,
1988 PerlIOBase_eof,
1989 PerlIOBase_error,
1990 PerlIOBase_clearerr,
1991 PerlIOBase_setlinebuf,
1992 PerlIOBuf_get_base,
1993 PerlIOBuf_bufsiz,
1994 PerlIOBuf_get_ptr,
1995 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt,
1997};
1998
1999/*****************************************************************************/
2000/* Coro::Semaphore */
2001
2002static SV *
2003coro_semaphore_new (int count)
2004{
2005 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2006 AV *av = newAV ();
2007 SV **ary;
2008
2009 /* unfortunately, building manually saves memory */
2010 Newx (ary, 2, SV *);
2011 AvALLOC (av) = ary;
2012 AvARRAY (av) = ary;
2013 AvMAX (av) = 1;
2014 AvFILLp (av) = 0;
2015 ary [0] = newSViv (count);
2016
2017 return newRV_noinc ((SV *)av);
2018}
2019
2020static void
2021coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2022{
2023 SV *count_sv = AvARRAY (av)[0];
2024 IV count = SvIVX (count_sv);
2025
2026 count += adjust;
2027 SvIVX (count_sv) = count;
2028
2029 /* now wake up as many waiters as are expected to lock */
2030 while (count > 0 && AvFILLp (av) > 0)
2031 {
2032 SV *cb;
2033
2034 /* swap first two elements so we can shift a waiter */
2035 AvARRAY (av)[0] = AvARRAY (av)[1];
2036 AvARRAY (av)[1] = count_sv;
2037 cb = av_shift (av);
2038
2039 if (SvOBJECT (cb))
2040 api_ready (aTHX_ cb);
2041 else
2042 croak ("callbacks not yet supported");
2043
2044 SvREFCNT_dec (cb);
2045
2046 --count;
2047 }
2048}
2049
2050static void
2051coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2052{
2053 /* call $sem->adjust (0) to possibly wake up some other waiters */
2054 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2055}
2056
2057static int
2058slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2059{
2060 AV *av = (AV *)frame->data;
2061 SV *count_sv = AvARRAY (av)[0];
2062
2063 /* if we are about to throw, don't actually acquire the lock, just throw */
2064 if (CORO_THROW)
2065 return 0;
2066 else if (SvIVX (count_sv) > 0)
2067 {
2068 SvSTATE_current->on_destroy = 0;
2069
2070 if (acquire)
2071 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2072 else
2073 coro_semaphore_adjust (aTHX_ av, 0);
2074
2075 return 0;
2076 }
2077 else
2078 {
2079 int i;
2080 /* if we were woken up but can't down, we look through the whole */
2081 /* waiters list and only add us if we aren't in there already */
2082 /* this avoids some degenerate memory usage cases */
2083
2084 for (i = 1; i <= AvFILLp (av); ++i)
2085 if (AvARRAY (av)[i] == SvRV (coro_current))
2086 return 1;
2087
2088 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2089 return 1;
2090 }
2091}
2092
2093static int
2094slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2095{
2096 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2097}
2098
2099static int
2100slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2101{
2102 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2103}
2104
2105static void
2106slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2107{
2108 AV *av = (AV *)SvRV (arg [0]);
2109
2110 if (SvIVX (AvARRAY (av)[0]) > 0)
2111 {
2112 frame->data = (void *)av;
2113 frame->prepare = prepare_nop;
2114 }
2115 else
2116 {
2117 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2118
2119 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2120 frame->prepare = prepare_schedule;
2121
2122 /* to avoid race conditions when a woken-up coro gets terminated */
2123 /* we arrange for a temporary on_destroy that calls adjust (0) */
2124 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2125 }
2126}
2127
2128static void
2129slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2130{
2131 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2132 frame->check = slf_check_semaphore_down;
2133}
2134
2135static void
2136slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2137{
2138 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2139 frame->check = slf_check_semaphore_wait;
2140}
2141
2142/*****************************************************************************/
2143/* gensub: simple closure generation utility */
2144
2145#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2146
2147/* create a closure from XS, returns a code reference */
2148/* the arg can be accessed via GENSUB_ARG from the callback */
2149/* the callback must use dXSARGS/XSRETURN */
2150static SV *
2151gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2152{
2153 CV *cv = (CV *)newSV (0);
2154
2155 sv_upgrade ((SV *)cv, SVt_PVCV);
2156
2157 CvANON_on (cv);
2158 CvISXSUB_on (cv);
2159 CvXSUB (cv) = xsub;
2160 GENSUB_ARG = arg;
2161
2162 return newRV_noinc ((SV *)cv);
2163}
2164
2165/*****************************************************************************/
2166/* Coro::AIO */
2167
2168#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2169
2170/* helper storage struct */
2171struct io_state
2172{
2173 int errorno;
2174 I32 laststype; /* U16 in 5.10.0 */
2175 int laststatval;
2176 Stat_t statcache;
2177};
2178
2179static void
2180coro_aio_callback (pTHX_ CV *cv)
2181{
2182 dXSARGS;
2183 AV *state = (AV *)GENSUB_ARG;
2184 SV *coro = av_pop (state);
2185 SV *data_sv = newSV (sizeof (struct io_state));
2186
2187 av_extend (state, items);
2188
2189 sv_upgrade (data_sv, SVt_PV);
2190 SvCUR_set (data_sv, sizeof (struct io_state));
2191 SvPOK_only (data_sv);
2192
2193 {
2194 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2195
2196 data->errorno = errno;
2197 data->laststype = PL_laststype;
2198 data->laststatval = PL_laststatval;
2199 data->statcache = PL_statcache;
2200 }
2201
2202 /* now build the result vector out of all the parameters and the data_sv */
2203 {
2204 int i;
2205
2206 for (i = 0; i < items; ++i)
2207 av_push (state, SvREFCNT_inc_NN (ST (i)));
2208 }
2209
2210 av_push (state, data_sv);
2211
2212 api_ready (aTHX_ coro);
2213 SvREFCNT_dec (coro);
2214 SvREFCNT_dec ((AV *)state);
2215}
2216
2217static int
2218slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2219{
2220 AV *state = (AV *)frame->data;
2221
2222 /* if we are about to throw, return early */
2223 /* this does not cancel the aio request, but at least */
2224 /* it quickly returns */
2225 if (CORO_THROW)
2226 return 0;
2227
2228 /* one element that is an RV? repeat! */
2229 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2230 return 1;
2231
2232 /* restore status */
2233 {
2234 SV *data_sv = av_pop (state);
2235 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2236
2237 errno = data->errorno;
2238 PL_laststype = data->laststype;
2239 PL_laststatval = data->laststatval;
2240 PL_statcache = data->statcache;
2241
2242 SvREFCNT_dec (data_sv);
2243 }
2244
2245 /* push result values */
2246 {
2247 dSP;
2248 int i;
2249
2250 EXTEND (SP, AvFILLp (state) + 1);
2251 for (i = 0; i <= AvFILLp (state); ++i)
2252 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2253
2254 PUTBACK;
2255 }
2256
2257 return 0;
2258}
2259
2260static void
2261slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2262{
2263 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2264 SV *coro_hv = SvRV (coro_current);
2265 struct coro *coro = SvSTATE_hv (coro_hv);
2266
2267 /* put our coroutine id on the state arg */
2268 av_push (state, SvREFCNT_inc_NN (coro_hv));
2269
2270 /* first see whether we have a non-zero priority and set it as AIO prio */
2271 if (coro->prio)
2272 {
2273 dSP;
2274
2275 static SV *prio_cv;
2276 static SV *prio_sv;
2277
2278 if (expect_false (!prio_cv))
2279 {
2280 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2281 prio_sv = newSViv (0);
2282 }
2283
2284 PUSHMARK (SP);
2285 sv_setiv (prio_sv, coro->prio);
2286 XPUSHs (prio_sv);
2287
2288 PUTBACK;
2289 call_sv (prio_cv, G_VOID | G_DISCARD);
2290 }
2291
2292 /* now call the original request */
2293 {
2294 dSP;
2295 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2296 int i;
2297
2298 PUSHMARK (SP);
2299
2300 /* first push all args to the stack */
2301 EXTEND (SP, items + 1);
2302
2303 for (i = 0; i < items; ++i)
2304 PUSHs (arg [i]);
2305
2306 /* now push the callback closure */
2307 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2308
2309 /* now call the AIO function - we assume our request is uncancelable */
2310 PUTBACK;
2311 call_sv ((SV *)req, G_VOID | G_DISCARD);
2312 }
2313
2314 /* now that the requets is going, we loop toll we have a result */
2315 frame->data = (void *)state;
2316 frame->prepare = prepare_schedule;
2317 frame->check = slf_check_aio_req;
2318}
2319
2320static void
2321coro_aio_req_xs (pTHX_ CV *cv)
2322{
2323 dXSARGS;
2324
2325 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2326
2327 XSRETURN_EMPTY;
2328}
2329
2330/*****************************************************************************/
2331
1508MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2332MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1509 2333
1510PROTOTYPES: DISABLE 2334PROTOTYPES: DISABLE
1511 2335
1512BOOT: 2336BOOT:
1513{ 2337{
1514#ifdef USE_ITHREADS 2338#ifdef USE_ITHREADS
1515 MUTEX_INIT (&coro_mutex); 2339# if CORO_PTHREAD
2340 coro_thx = PERL_GET_CONTEXT;
2341# endif
1516#endif 2342#endif
1517 BOOT_PAGESIZE; 2343 BOOT_PAGESIZE;
1518 2344
1519 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2345 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1520 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2346 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1521 2347
2348 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2349 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2350 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2351
1522 hv_sig = coro_get_hv ("SIG", TRUE); 2352 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1523 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2353 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1524 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2354 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1525
1526 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1527 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1528 2355
1529 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2356 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1530 2357
1531 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2358 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1532 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2359 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1537 main_top_env = PL_top_env; 2364 main_top_env = PL_top_env;
1538 2365
1539 while (main_top_env->je_prev) 2366 while (main_top_env->je_prev)
1540 main_top_env = main_top_env->je_prev; 2367 main_top_env = main_top_env->je_prev;
1541 2368
2369 {
2370 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2371
2372 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2373 hv_store_ent (PL_custom_op_names, slf,
2374 newSVpv ("coro_slf", 0), 0);
2375
2376 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2377 hv_store_ent (PL_custom_op_descs, slf,
2378 newSVpv ("coro schedule like function", 0), 0);
2379 }
2380
1542 coroapi.ver = CORO_API_VERSION; 2381 coroapi.ver = CORO_API_VERSION;
2382 coroapi.rev = CORO_API_REVISION;
2383
1543 coroapi.transfer = api_transfer; 2384 coroapi.transfer = api_transfer;
2385
2386 coroapi.sv_state = SvSTATE_;
2387 coroapi.execute_slf = api_execute_slf;
2388 coroapi.prepare_nop = prepare_nop;
2389 coroapi.prepare_schedule = prepare_schedule;
2390 coroapi.prepare_cede = prepare_cede;
2391 coroapi.prepare_cede_notself = prepare_cede_notself;
2392
2393 {
2394 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2395
2396 if (!svp) croak ("Time::HiRes is required");
2397 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2398
2399 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2400 }
1544 2401
1545 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2402 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1546} 2403}
1547 2404
1548SV * 2405SV *
1549new (char *klass, ...) 2406new (char *klass, ...)
1550 CODE: 2407 CODE:
1551{ 2408{
1552 struct coro *coro; 2409 struct coro *coro;
2410 MAGIC *mg;
1553 HV *hv; 2411 HV *hv;
1554 int i; 2412 int i;
1555 2413
1556 Newz (0, coro, 1, struct coro); 2414 Newz (0, coro, 1, struct coro);
1557 coro->args = newAV (); 2415 coro->args = newAV ();
… …
1560 if (coro_first) coro_first->prev = coro; 2418 if (coro_first) coro_first->prev = coro;
1561 coro->next = coro_first; 2419 coro->next = coro_first;
1562 coro_first = coro; 2420 coro_first = coro;
1563 2421
1564 coro->hv = hv = newHV (); 2422 coro->hv = hv = newHV ();
1565 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2423 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2424 mg->mg_flags |= MGf_DUP;
1566 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2425 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1567 2426
1568 av_extend (coro->args, items - 1); 2427 av_extend (coro->args, items - 1);
1569 for (i = 1; i < items; i++) 2428 for (i = 1; i < items; i++)
1570 av_push (coro->args, newSVsv (ST (i))); 2429 av_push (coro->args, newSVsv (ST (i)));
1571} 2430}
1572 OUTPUT: 2431 OUTPUT:
1573 RETVAL 2432 RETVAL
1574 2433
1575# these not obviously related functions are all rolled into the same xs
1576# function to increase chances that they all will call transfer with the same
1577# stack offset
1578void 2434void
1579_set_stacklevel (...) 2435transfer (...)
1580 ALIAS: 2436 PROTOTYPE: $$
1581 Coro::State::transfer = 1 2437 CODE:
1582 Coro::schedule = 2 2438 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1583 Coro::cede = 3
1584 Coro::cede_notself = 4
1585 Coro::Event::next = 5
1586 Coro::Event::next_cancel = 6
1587 PPCODE:
1588{
1589 struct transfer_args ta;
1590 int again = 0;
1591
1592 do
1593 {
1594 switch (ix)
1595 {
1596 case 0:
1597 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1598 ta.next = 0;
1599 break;
1600
1601 case 1:
1602 if (items != 2)
1603 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1604
1605 prepare_transfer (aTHX_ &ta, ST(0), ST(1));
1606 break;
1607
1608 case 2:
1609 prepare_schedule (aTHX_ &ta);
1610 break;
1611
1612 case 3:
1613 prepare_cede (aTHX_ &ta);
1614 break;
1615
1616 case 4:
1617 if (!prepare_cede_notself (aTHX_ &ta))
1618 XSRETURN_EMPTY;
1619
1620 break;
1621
1622 case 5:
1623 case 6:
1624 if (items != 1)
1625 croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1626
1627 {
1628 SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1629
1630 if (ev)
1631 {
1632 if (GIMME_V != G_VOID)
1633 {
1634 XPUSHs (ev);
1635 XSRETURN (1);
1636 }
1637 else
1638 XSRETURN_EMPTY;
1639 }
1640 }
1641
1642 prepare_schedule (aTHX_ &ta);
1643 again = 1;
1644 break;
1645 }
1646
1647 /* our caller, entersub, caches *only* this value */
1648 ta.prev->gimme = GIMME_V == G_VOID ? 0
1649 : GIMME_V == G_SCALAR ? 1
1650 : 2;
1651
1652 /* we need to save all local variables, as we might execute a different coroutine when transfer returns */
1653 sp += 2; /* save args */
1654 EXTEND (SP, 4);
1655 PUSHs ((SV *)(intptr_t)items);
1656 PUSHs ((SV *)(intptr_t)ix);
1657 PUSHs ((SV *)(intptr_t)ax);
1658 PUSHs ((SV *)(intptr_t)again);
1659 PUTBACK;
1660 BARRIER;
1661 TRANSFER (ta);
1662 BARRIER;
1663 SPAGAIN;
1664 again = (intptr_t)POPs;
1665 ax = (intptr_t)POPs;
1666 ix = (intptr_t)POPs;
1667 items = (intptr_t)POPs;
1668 sp -= 2; /* restore args */
1669 }
1670 while (again);
1671
1672 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1673 XSRETURN_YES;
1674
1675 XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */
1676}
1677 2439
1678bool 2440bool
1679_destroy (SV *coro_sv) 2441_destroy (SV *coro_sv)
1680 CODE: 2442 CODE:
1681 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2443 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1682 OUTPUT: 2444 OUTPUT:
1683 RETVAL 2445 RETVAL
1684 2446
1685void 2447void
1686_exit (code) 2448_exit (int code)
1687 int code
1688 PROTOTYPE: $ 2449 PROTOTYPE: $
1689 CODE: 2450 CODE:
1690 _exit (code); 2451 _exit (code);
1691 2452
1692int 2453int
1693cctx_stacksize (int new_stacksize = 0) 2454cctx_stacksize (int new_stacksize = 0)
2455 PROTOTYPE: ;$
1694 CODE: 2456 CODE:
1695 RETVAL = coro_stacksize; 2457 RETVAL = cctx_stacksize;
1696 if (new_stacksize) 2458 if (new_stacksize)
2459 {
1697 coro_stacksize = new_stacksize; 2460 cctx_stacksize = new_stacksize;
2461 ++cctx_gen;
2462 }
1698 OUTPUT: 2463 OUTPUT:
1699 RETVAL 2464 RETVAL
1700 2465
1701int 2466int
2467cctx_max_idle (int max_idle = 0)
2468 PROTOTYPE: ;$
2469 CODE:
2470 RETVAL = cctx_max_idle;
2471 if (max_idle > 1)
2472 cctx_max_idle = max_idle;
2473 OUTPUT:
2474 RETVAL
2475
2476int
1702cctx_count () 2477cctx_count ()
2478 PROTOTYPE:
1703 CODE: 2479 CODE:
1704 RETVAL = cctx_count; 2480 RETVAL = cctx_count;
1705 OUTPUT: 2481 OUTPUT:
1706 RETVAL 2482 RETVAL
1707 2483
1708int 2484int
1709cctx_idle () 2485cctx_idle ()
2486 PROTOTYPE:
1710 CODE: 2487 CODE:
1711 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2]; 2488 RETVAL = cctx_idle;
1712 OUTPUT: 2489 OUTPUT:
1713 RETVAL 2490 RETVAL
1714 2491
1715void 2492void
1716list () 2493list ()
2494 PROTOTYPE:
1717 PPCODE: 2495 PPCODE:
1718{ 2496{
1719 struct coro *coro; 2497 struct coro *coro;
1720 for (coro = coro_first; coro; coro = coro->next) 2498 for (coro = coro_first; coro; coro = coro->next)
1721 if (coro->hv) 2499 if (coro->hv)
… …
1726call (Coro::State coro, SV *coderef) 2504call (Coro::State coro, SV *coderef)
1727 ALIAS: 2505 ALIAS:
1728 eval = 1 2506 eval = 1
1729 CODE: 2507 CODE:
1730{ 2508{
1731 if (coro->mainstack) 2509 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1732 { 2510 {
1733 struct coro temp; 2511 struct coro temp;
1734 2512
1735 if (!(coro->flags & CF_RUNNING)) 2513 if (!(coro->flags & CF_RUNNING))
1736 { 2514 {
2515 PUTBACK;
1737 save_perl (aTHX_ &temp); 2516 save_perl (aTHX_ &temp);
1738 load_perl (aTHX_ coro); 2517 load_perl (aTHX_ coro);
1739 } 2518 }
1740 2519
1741 { 2520 {
… …
1750 eval_sv (coderef, 0); 2529 eval_sv (coderef, 0);
1751 else 2530 else
1752 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2531 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1753 2532
1754 POPSTACK; 2533 POPSTACK;
2534 SPAGAIN;
1755 FREETMPS; 2535 FREETMPS;
1756 LEAVE; 2536 LEAVE;
2537 PUTBACK;
1757 } 2538 }
1758 2539
1759 if (!(coro->flags & CF_RUNNING)) 2540 if (!(coro->flags & CF_RUNNING))
1760 { 2541 {
1761 save_perl (aTHX_ coro); 2542 save_perl (aTHX_ coro);
1762 load_perl (aTHX_ &temp); 2543 load_perl (aTHX_ &temp);
2544 SPAGAIN;
1763 } 2545 }
1764 } 2546 }
1765} 2547}
1766 2548
1767SV * 2549SV *
… …
1776 RETVAL = boolSV (coro->flags & ix); 2558 RETVAL = boolSV (coro->flags & ix);
1777 OUTPUT: 2559 OUTPUT:
1778 RETVAL 2560 RETVAL
1779 2561
1780void 2562void
2563throw (Coro::State self, SV *throw = &PL_sv_undef)
2564 PROTOTYPE: $;$
2565 CODE:
2566{
2567 struct coro *current = SvSTATE_current;
2568 SV **throwp = self == current ? &CORO_THROW : &self->except;
2569 SvREFCNT_dec (*throwp);
2570 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2571}
2572
2573void
1781api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2574api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2575 PROTOTYPE: $;$
2576 C_ARGS: aTHX_ coro, flags
1782 2577
1783SV * 2578SV *
1784has_stack (Coro::State coro) 2579has_cctx (Coro::State coro)
1785 PROTOTYPE: $ 2580 PROTOTYPE: $
1786 CODE: 2581 CODE:
1787 RETVAL = boolSV (!!coro->cctx); 2582 RETVAL = boolSV (!!coro->cctx);
1788 OUTPUT: 2583 OUTPUT:
1789 RETVAL 2584 RETVAL
… …
1794 CODE: 2589 CODE:
1795 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2590 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796 OUTPUT: 2591 OUTPUT:
1797 RETVAL 2592 RETVAL
1798 2593
1799IV 2594UV
1800rss (Coro::State coro) 2595rss (Coro::State coro)
1801 PROTOTYPE: $ 2596 PROTOTYPE: $
1802 ALIAS: 2597 ALIAS:
1803 usecount = 1 2598 usecount = 1
1804 CODE: 2599 CODE:
… …
1808 case 1: RETVAL = coro->usecount; break; 2603 case 1: RETVAL = coro->usecount; break;
1809 } 2604 }
1810 OUTPUT: 2605 OUTPUT:
1811 RETVAL 2606 RETVAL
1812 2607
2608void
2609force_cctx ()
2610 PROTOTYPE:
2611 CODE:
2612 SvSTATE_current->cctx->idle_sp = 0;
2613
2614void
2615swap_defsv (Coro::State self)
2616 PROTOTYPE: $
2617 ALIAS:
2618 swap_defav = 1
2619 CODE:
2620 if (!self->slot)
2621 croak ("cannot swap state with coroutine that has no saved state,");
2622 else
2623 {
2624 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2625 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2626
2627 SV *tmp = *src; *src = *dst; *dst = tmp;
2628 }
2629
1813 2630
1814MODULE = Coro::State PACKAGE = Coro 2631MODULE = Coro::State PACKAGE = Coro
1815 2632
1816BOOT: 2633BOOT:
1817{ 2634{
1818 int i; 2635 int i;
1819 2636
1820 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1821 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1822 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2637 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2638 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2639 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1823 2640
1824 coro_current = coro_get_sv ("Coro::current", FALSE); 2641 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1825 SvREADONLY_on (coro_current); 2642 SvREADONLY_on (coro_current);
1826 2643
1827 coro_stash = gv_stashpv ("Coro", TRUE); 2644 coro_stash = gv_stashpv ("Coro", TRUE);
1828 2645
1829 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2646 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1835 2652
1836 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2653 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1837 coro_ready[i] = newAV (); 2654 coro_ready[i] = newAV ();
1838 2655
1839 { 2656 {
1840 SV *sv = perl_get_sv ("Coro::API", TRUE); 2657 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1841 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1842 2658
1843 coroapi.schedule = api_schedule; 2659 coroapi.schedule = api_schedule;
1844 coroapi.cede = api_cede; 2660 coroapi.cede = api_cede;
1845 coroapi.cede_notself = api_cede_notself; 2661 coroapi.cede_notself = api_cede_notself;
1846 coroapi.ready = api_ready; 2662 coroapi.ready = api_ready;
1847 coroapi.is_ready = api_is_ready; 2663 coroapi.is_ready = api_is_ready;
1848 coroapi.nready = &coro_nready; 2664 coroapi.nready = coro_nready;
1849 coroapi.current = coro_current; 2665 coroapi.current = coro_current;
1850 2666
1851 GCoroAPI = &coroapi; 2667 /*GCoroAPI = &coroapi;*/
1852 sv_setiv (sv, (IV)&coroapi); 2668 sv_setiv (sv, (IV)&coroapi);
1853 SvREADONLY_on (sv); 2669 SvREADONLY_on (sv);
1854 } 2670 }
1855} 2671}
2672
2673void
2674schedule (...)
2675 CODE:
2676 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2677
2678void
2679cede (...)
2680 CODE:
2681 CORO_EXECUTE_SLF_XS (slf_init_cede);
2682
2683void
2684cede_notself (...)
2685 CODE:
2686 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1856 2687
1857void 2688void
1858_set_current (SV *current) 2689_set_current (SV *current)
1859 PROTOTYPE: $ 2690 PROTOTYPE: $
1860 CODE: 2691 CODE:
1861 SvREFCNT_dec (SvRV (coro_current)); 2692 SvREFCNT_dec (SvRV (coro_current));
1862 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2693 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2694
2695void
2696_set_readyhook (SV *hook)
2697 PROTOTYPE: $
2698 CODE:
2699 SvREFCNT_dec (coro_readyhook);
2700 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1863 2701
1864int 2702int
1865prio (Coro::State coro, int newprio = 0) 2703prio (Coro::State coro, int newprio = 0)
2704 PROTOTYPE: $;$
1866 ALIAS: 2705 ALIAS:
1867 nice = 1 2706 nice = 1
1868 CODE: 2707 CODE:
1869{ 2708{
1870 RETVAL = coro->prio; 2709 RETVAL = coro->prio;
… …
1885 2724
1886SV * 2725SV *
1887ready (SV *self) 2726ready (SV *self)
1888 PROTOTYPE: $ 2727 PROTOTYPE: $
1889 CODE: 2728 CODE:
1890 RETVAL = boolSV (api_ready (self)); 2729 RETVAL = boolSV (api_ready (aTHX_ self));
1891 OUTPUT: 2730 OUTPUT:
1892 RETVAL 2731 RETVAL
1893 2732
1894int 2733int
1895nready (...) 2734nready (...)
… …
1897 CODE: 2736 CODE:
1898 RETVAL = coro_nready; 2737 RETVAL = coro_nready;
1899 OUTPUT: 2738 OUTPUT:
1900 RETVAL 2739 RETVAL
1901 2740
1902void
1903throw (Coro::State self, SV *throw = &PL_sv_undef)
1904 PROTOTYPE: $;$
1905 CODE:
1906 SvREFCNT_dec (self->throw);
1907 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1908
1909# for async_pool speedup 2741# for async_pool speedup
1910void 2742void
1911_pool_1 (SV *cb) 2743_pool_1 (SV *cb)
1912 CODE: 2744 CODE:
1913{ 2745{
1914 struct coro *coro = SvSTATE (coro_current);
1915 HV *hv = (HV *)SvRV (coro_current); 2746 HV *hv = (HV *)SvRV (coro_current);
2747 struct coro *coro = SvSTATE_hv ((SV *)hv);
1916 AV *defav = GvAV (PL_defgv); 2748 AV *defav = GvAV (PL_defgv);
1917 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2749 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1918 AV *invoke_av; 2750 AV *invoke_av;
1919 int i, len; 2751 int i, len;
1920 2752
1921 if (!invoke) 2753 if (!invoke)
2754 {
2755 SV *old = PL_diehook;
2756 PL_diehook = 0;
2757 SvREFCNT_dec (old);
1922 croak ("\3async_pool terminate\2\n"); 2758 croak ("\3async_pool terminate\2\n");
2759 }
1923 2760
1924 SvREFCNT_dec (coro->saved_deffh); 2761 SvREFCNT_dec (coro->saved_deffh);
1925 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2762 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1926 2763
1927 hv_store (hv, "desc", sizeof ("desc") - 1, 2764 hv_store (hv, "desc", sizeof ("desc") - 1,
1928 newSVpvn (strpair ("[async_pool]")), 0); 2765 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1929 2766
1930 invoke_av = (AV *)SvRV (invoke); 2767 invoke_av = (AV *)SvRV (invoke);
1931 len = av_len (invoke_av); 2768 len = av_len (invoke_av);
1932 2769
1933 sv_setsv (cb, AvARRAY (invoke_av)[0]); 2770 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1934 2771
1935 if (len > 0) 2772 if (len > 0)
1936 { 2773 {
1937 av_fill (defav, len - 1); 2774 av_fill (defav, len - 1);
1938 for (i = 0; i < len; ++i) 2775 for (i = 0; i < len; ++i)
1939 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2776 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1940 } 2777 }
1941
1942 SvREFCNT_dec (invoke);
1943} 2778}
1944 2779
1945void 2780void
1946_pool_2 (SV *cb) 2781_pool_2 (SV *cb)
1947 CODE: 2782 CODE:
1948{ 2783{
1949 struct coro *coro = SvSTATE (coro_current); 2784 HV *hv = (HV *)SvRV (coro_current);
2785 struct coro *coro = SvSTATE_hv ((SV *)hv);
1950 2786
1951 sv_setsv (cb, &PL_sv_undef); 2787 sv_setsv (cb, &PL_sv_undef);
1952 2788
1953 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2789 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1954 coro->saved_deffh = 0; 2790 coro->saved_deffh = 0;
1955 2791
1956 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2792 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1957 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2793 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2794 {
2795 SV *old = PL_diehook;
2796 PL_diehook = 0;
2797 SvREFCNT_dec (old);
1958 croak ("\3async_pool terminate\2\n"); 2798 croak ("\3async_pool terminate\2\n");
2799 }
1959 2800
1960 av_clear (GvAV (PL_defgv)); 2801 av_clear (GvAV (PL_defgv));
1961 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 2802 hv_store (hv, "desc", sizeof ("desc") - 1,
1962 newSVpvn (strpair ("[async_pool idle]")), 0); 2803 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1963 2804
1964 coro->prio = 0; 2805 coro->prio = 0;
1965 2806
1966 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2807 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1967 api_trace (coro_current, 0); 2808 api_trace (aTHX_ coro_current, 0);
1968 2809
1969 av_push (av_async_pool, newSVsv (coro_current)); 2810 av_push (av_async_pool, newSVsv (coro_current));
1970} 2811}
1971 2812
1972 2813
2814MODULE = Coro::State PACKAGE = PerlIO::cede
2815
2816BOOT:
2817 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2818
2819
1973MODULE = Coro::State PACKAGE = Coro::AIO 2820MODULE = Coro::State PACKAGE = Coro::Semaphore
1974 2821
1975SV * 2822SV *
1976_get_state () 2823new (SV *klass, SV *count = 0)
1977 CODE: 2824 CODE:
1978{ 2825 RETVAL = sv_bless (
1979 struct io_state *data; 2826 coro_semaphore_new (count && SvOK (count) ? SvIV (count) : 1),
1980 2827 GvSTASH (CvGV (cv))
1981 RETVAL = newSV (sizeof (struct io_state)); 2828 );
1982 data = (struct io_state *)SvPVX (RETVAL);
1983 SvCUR_set (RETVAL, sizeof (struct io_state));
1984 SvPOK_only (RETVAL);
1985
1986 data->errorno = errno;
1987 data->laststype = PL_laststype;
1988 data->laststatval = PL_laststatval;
1989 data->statcache = PL_statcache;
1990}
1991 OUTPUT: 2829 OUTPUT:
1992 RETVAL 2830 RETVAL
1993 2831
2832# helper for Coro::Channel
2833SV *
2834_alloc (int count)
2835 CODE:
2836 RETVAL = coro_semaphore_new (count);
2837 OUTPUT:
2838 RETVAL
2839
2840SV *
2841count (SV *self)
2842 CODE:
2843 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2844 OUTPUT:
2845 RETVAL
2846
1994void 2847void
1995_set_state (char *data_) 2848up (SV *self, int adjust = 1)
1996 PROTOTYPE: $ 2849 ALIAS:
2850 adjust = 1
2851 CODE:
2852 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2853
2854void
2855down (SV *self)
2856 ALIAS:
2857 Coro::Signal::wait = 0
2858 CODE:
2859 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2860
2861void
2862wait (SV *self)
2863 CODE:
2864 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2865
2866void
2867try (SV *self)
2868 PPCODE:
2869{
2870 AV *av = (AV *)SvRV (self);
2871 SV *count_sv = AvARRAY (av)[0];
2872 IV count = SvIVX (count_sv);
2873
2874 if (count > 0)
2875 {
2876 --count;
2877 SvIVX (count_sv) = count;
2878 XSRETURN_YES;
2879 }
2880 else
2881 XSRETURN_NO;
2882}
2883
2884void
2885waiters (SV *self)
2886 PPCODE:
2887{
2888 AV *av = (AV *)SvRV (self);
2889 int wcount = AvFILLp (av) + 1 - 1;
2890
2891 if (GIMME_V == G_SCALAR)
2892 XPUSHs (sv_2mortal (newSViv (wcount)));
2893 else
2894 {
2895 int i;
2896 EXTEND (SP, wcount);
2897 for (i = 1; i <= wcount; ++i)
2898 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2899 }
2900}
2901
2902MODULE = Coro::State PACKAGE = Coro::Signal
2903
2904SV *
2905new (SV *klass)
1997 CODE: 2906 CODE:
1998{ 2907 RETVAL = sv_bless (
1999 struct io_state *data = (void *)data_; 2908 coro_semaphore_new (0),
2909 GvSTASH (CvGV (cv))
2910 );
2911 OUTPUT:
2912 RETVAL
2000 2913
2001 errno = data->errorno; 2914void
2002 PL_laststype = data->laststype; 2915broadcast (SV *self, int adjust = 1)
2003 PL_laststatval = data->laststatval; 2916 CODE:
2004 PL_statcache = data->statcache; 2917{
2918 AV *av = (AV *)SvRV (self);
2919 SvIVX (AvARRAY (av)[0]) = 0; /* not necessary, but gives me fuzzy warm feelings */
2920 coro_semaphore_adjust (aTHX_ av, AvFILLp (av) + 1 - 1);
2921 SvIVX (AvARRAY (av)[0]) = 0; /* necessary */
2005} 2922}
2006 2923
2924
2925MODULE = Coro::State PACKAGE = Coro::AnyEvent
2926
2927BOOT:
2928 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2929
2930void
2931_schedule (...)
2932 CODE:
2933{
2934 static int incede;
2935
2936 api_cede_notself (aTHX);
2937
2938 ++incede;
2939 while (coro_nready >= incede && api_cede (aTHX))
2940 ;
2941
2942 sv_setsv (sv_activity, &PL_sv_undef);
2943 if (coro_nready >= incede)
2944 {
2945 PUSHMARK (SP);
2946 PUTBACK;
2947 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2948 }
2949
2950 --incede;
2951}
2952
2953
2954MODULE = Coro::State PACKAGE = Coro::AIO
2955
2956void
2957_register (char *target, char *proto, SV *req)
2958 CODE:
2959{
2960 HV *st;
2961 GV *gvp;
2962 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2963 /* newXSproto doesn't return the CV on 5.8 */
2964 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2965 sv_setpv ((SV *)slf_cv, proto);
2966 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2967}
2968

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