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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 1.304 by root, Wed Nov 19 08:22:48 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 */
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 */
263 SV *rouse_cb;
239 264
240 /* async_pool */ 265 /* async_pool */
241 SV *saved_deffh; 266 SV *saved_deffh;
242 267
243 /* linked list */ 268 /* linked list */
244 struct coro *next, *prev; 269 struct coro *next, *prev;
245}; 270};
246 271
247typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
248typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */
249 279
250/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
251 281
252#define PRIO_MAX 3 282#define PRIO_MAX 3
253#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
256#define PRIO_IDLE -3 286#define PRIO_IDLE -3
257#define PRIO_MIN -4 287#define PRIO_MIN -4
258 288
259/* for Coro.pm */ 289/* for Coro.pm */
260static SV *coro_current; 290static SV *coro_current;
291static SV *coro_readyhook;
261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
262static int coro_nready;
263static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
264 295
265/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
266 297
267static SV * 298static SV *
268coro_get_sv (const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
269{ 300{
270#if PERL_VERSION_ATLEAST (5,9,0) 301#if PERL_VERSION_ATLEAST (5,10,0)
271 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
272 get_sv (name, create); 303 get_sv (name, create);
273#endif 304#endif
274 return get_sv (name, create); 305 return get_sv (name, create);
275} 306}
276 307
277static AV * 308static AV *
278coro_get_av (const char *name, int create) 309coro_get_av (pTHX_ const char *name, int create)
279{ 310{
280#if PERL_VERSION_ATLEAST (5,9,0) 311#if PERL_VERSION_ATLEAST (5,10,0)
281 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
282 get_av (name, create); 313 get_av (name, create);
283#endif 314#endif
284 return get_av (name, create); 315 return get_av (name, create);
285} 316}
286 317
287static HV * 318static HV *
288coro_get_hv (const char *name, int create) 319coro_get_hv (pTHX_ const char *name, int create)
289{ 320{
290#if PERL_VERSION_ATLEAST (5,9,0) 321#if PERL_VERSION_ATLEAST (5,10,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_hv (name, create); 323 get_hv (name, create);
293#endif 324#endif
294 return get_hv (name, create); 325 return get_hv (name, create);
295} 326}
… …
300 AV *padlist = CvPADLIST (cv); 331 AV *padlist = CvPADLIST (cv);
301 AV *newpadlist, *newpad; 332 AV *newpadlist, *newpad;
302 333
303 newpadlist = newAV (); 334 newpadlist = newAV ();
304 AvREAL_off (newpadlist); 335 AvREAL_off (newpadlist);
305#if PERL_VERSION_ATLEAST (5,9,0) 336#if PERL_VERSION_ATLEAST (5,10,0)
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
307#else 338#else
308 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
309#endif 340#endif
310 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
311 --AvFILLp (padlist); 342 --AvFILLp (padlist);
312 343
313 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
314 av_store (newpadlist, 1, (SV *)newpad); 345 av_store (newpadlist, 1, (SV *)newpad);
315 346
316 return newpadlist; 347 return newpadlist;
317} 348}
318 349
… …
348 379
349 /* casting is fun. */ 380 /* casting is fun. */
350 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
351 free_padlist (aTHX_ padlist); 382 free_padlist (aTHX_ padlist);
352 383
353 SvREFCNT_dec (av); 384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
354 385
355 return 0; 386 return 0;
356} 387}
357 388
389#define CORO_MAGIC_type_cv 26
358#define PERL_MAGIC_coro PERL_MAGIC_ext 390#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 391
360static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 392static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0,
394 coro_cv_free
395};
361 396
362#define CORO_MAGIC(cv) \ 397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
363 SvMAGIC (cv) \ 399 ? SvMAGIC (sv) \
364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 400 : mg_find (sv, type))
365 ? SvMAGIC (cv) \ 401
366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 402#define CORO_MAGIC(sv, type) \
403 (expect_true (SvMAGIC (sv)) \
404 ? CORO_MAGIC_NN (sv, type) \
367 : 0 405 : 0)
368 406
369static struct coro * 407#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
409
410INLINE struct coro *
370SvSTATE_ (pTHX_ SV *coro) 411SvSTATE_ (pTHX_ SV *coro)
371{ 412{
372 HV *stash; 413 HV *stash;
373 MAGIC *mg; 414 MAGIC *mg;
374 415
… …
384 /* very slow, but rare, check */ 425 /* very slow, but rare, check */
385 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 426 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386 croak ("Coro::State object required"); 427 croak ("Coro::State object required");
387 } 428 }
388 429
389 mg = CORO_MAGIC (coro); 430 mg = CORO_MAGIC_state (coro);
390 return (struct coro *)mg->mg_ptr; 431 return (struct coro *)mg->mg_ptr;
391} 432}
392 433
393#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394 435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
439
395/* the next two functions merely cache the padlists */ 440/* the next two functions merely cache the padlists */
396static void 441static void
397get_padlist (pTHX_ CV *cv) 442get_padlist (pTHX_ CV *cv)
398{ 443{
399 MAGIC *mg = CORO_MAGIC (cv); 444 MAGIC *mg = CORO_MAGIC_cv (cv);
400 AV *av; 445 AV *av;
401 446
402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 447 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 448 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
404 else 449 else
405 { 450 {
406#if CORO_PREFER_PERL_FUNCTIONS 451#if CORO_PREFER_PERL_FUNCTIONS
407 /* this is probably cleaner, but also slower? */ 452 /* this is probably cleaner? but also slower! */
453 /* in practise, it seems to be less stable */
408 CV *cp = Perl_cv_clone (cv); 454 CV *cp = Perl_cv_clone (cv);
409 CvPADLIST (cv) = CvPADLIST (cp); 455 CvPADLIST (cv) = CvPADLIST (cp);
410 CvPADLIST (cp) = 0; 456 CvPADLIST (cp) = 0;
411 SvREFCNT_dec (cp); 457 SvREFCNT_dec (cp);
412#else 458#else
… …
416} 462}
417 463
418static void 464static void
419put_padlist (pTHX_ CV *cv) 465put_padlist (pTHX_ CV *cv)
420{ 466{
421 MAGIC *mg = CORO_MAGIC (cv); 467 MAGIC *mg = CORO_MAGIC_cv (cv);
422 AV *av; 468 AV *av;
423 469
424 if (expect_false (!mg)) 470 if (expect_false (!mg))
425 { 471 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 }
431 472
432 av = (AV *)mg->mg_obj; 473 av = (AV *)mg->mg_obj;
433 474
434 if (expect_false (AvFILLp (av) >= AvMAX (av))) 475 if (expect_false (AvFILLp (av) >= AvMAX (av)))
435 av_extend (av, AvMAX (av) + 1); 476 av_extend (av, AvMAX (av) + 1);
… …
453 GvSV (irsgv) = slot->irsgv; 494 GvSV (irsgv) = slot->irsgv;
454 495
455 #define VAR(name,type) PL_ ## name = slot->name; 496 #define VAR(name,type) PL_ ## name = slot->name;
456 # include "state.h" 497 # include "state.h"
457 #undef VAR 498 #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);*/
461 499
462 { 500 {
463 dSP; 501 dSP;
464 502
465 CV *cv; 503 CV *cv;
… …
472 CvPADLIST (cv) = (AV *)POPs; 510 CvPADLIST (cv) = (AV *)POPs;
473 } 511 }
474 512
475 PUTBACK; 513 PUTBACK;
476 } 514 }
515
516 slf_frame = c->slf_frame;
517 CORO_THROW = c->except;
477} 518}
478 519
479static void 520static void
480save_perl (pTHX_ Coro__State c) 521save_perl (pTHX_ Coro__State c)
481{ 522{
523 c->except = CORO_THROW;
524 c->slf_frame = slf_frame;
525
482 { 526 {
483 dSP; 527 dSP;
484 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
485 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
486 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
504 548
505 if (expect_true (CvDEPTH (cv))) 549 if (expect_true (CvDEPTH (cv)))
506 { 550 {
507 EXTEND (SP, 3); 551 EXTEND (SP, 3);
508 PUSHs ((SV *)CvPADLIST (cv)); 552 PUSHs ((SV *)CvPADLIST (cv));
509 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
510 PUSHs ((SV *)cv); 554 PUSHs ((SV *)cv);
511 555
512 CvDEPTH (cv) = 0; 556 CvDEPTH (cv) = 0;
513 get_padlist (aTHX_ cv); 557 get_padlist (aTHX_ cv);
514 } 558 }
… …
553 #undef VAR 597 #undef VAR
554 } 598 }
555} 599}
556 600
557/* 601/*
558 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
559 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
560 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
561 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
562 */ 606 */
563#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
… …
594 638
595 New(54,PL_savestack,24,ANY); 639 New(54,PL_savestack,24,ANY);
596 PL_savestack_ix = 0; 640 PL_savestack_ix = 0;
597 PL_savestack_max = 24; 641 PL_savestack_max = 24;
598 642
599#if !PERL_VERSION_ATLEAST (5,9,0) 643#if !PERL_VERSION_ATLEAST (5,10,0)
600 New(54,PL_retstack,4,OP*); 644 New(54,PL_retstack,4,OP*);
601 PL_retstack_ix = 0; 645 PL_retstack_ix = 0;
602 PL_retstack_max = 4; 646 PL_retstack_max = 4;
603#endif 647#endif
604} 648}
… …
606 650
607/* 651/*
608 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
609 */ 653 */
610static void 654static void
611coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
612{ 656{
613 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
614 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
615 659
616 while (PL_curstackinfo) 660 while (PL_curstackinfo)
… …
627 671
628 Safefree (PL_tmps_stack); 672 Safefree (PL_tmps_stack);
629 Safefree (PL_markstack); 673 Safefree (PL_markstack);
630 Safefree (PL_scopestack); 674 Safefree (PL_scopestack);
631 Safefree (PL_savestack); 675 Safefree (PL_savestack);
632#if !PERL_VERSION_ATLEAST (5,9,0) 676#if !PERL_VERSION_ATLEAST (5,10,0)
633 Safefree (PL_retstack); 677 Safefree (PL_retstack);
634#endif 678#endif
635} 679}
636 680
637static size_t 681static size_t
… …
653 #undef VAR 697 #undef VAR
654 } 698 }
655 else 699 else
656 slot = coro->slot; 700 slot = coro->slot;
657 701
702 if (slot)
703 {
658 rss += sizeof (slot->curstackinfo); 704 rss += sizeof (slot->curstackinfo);
659 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
660 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661 rss += slot->tmps_max * sizeof (SV *); 707 rss += slot->tmps_max * sizeof (SV *);
662 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663 rss += slot->scopestack_max * sizeof (I32); 709 rss += slot->scopestack_max * sizeof (I32);
664 rss += slot->savestack_max * sizeof (ANY); 710 rss += slot->savestack_max * sizeof (ANY);
665 711
666#if !PERL_VERSION_ATLEAST (5,9,0) 712#if !PERL_VERSION_ATLEAST (5,10,0)
667 rss += slot->retstack_max * sizeof (OP *); 713 rss += slot->retstack_max * sizeof (OP *);
668#endif 714#endif
715 }
669 } 716 }
670 717
671 return rss; 718 return rss;
672} 719}
673 720
674/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
675 722
723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726
727/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr)
732#endif
733
734/*
735 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide
738 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */
676static void 743static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{
746 const char *s = MgPV_nolen_const (mg);
747
748 if (*s == '_')
749 {
750 SV **svp = 0;
751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
758 return 0;
759 }
760 }
761
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = 0;
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787}
788
789static int
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{
792 const char *s = MgPV_nolen_const (mg);
793
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp;
804 *svp = newSVsv (sv);
805 SvREFCNT_dec (old);
806 return 0;
807 }
808 }
809
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811}
812
813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
825
826static UNOP coro_setup_op;
827
828static void NOINLINE /* noinline to keep it out of the transfer fast path */
677coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
678{ 830{
679 /* 831 /*
680 * emulate part of the perl startup here. 832 * emulate part of the perl startup here.
681 */ 833 */
… …
688 PL_curpm = 0; 840 PL_curpm = 0;
689 PL_curpad = 0; 841 PL_curpad = 0;
690 PL_localizing = 0; 842 PL_localizing = 0;
691 PL_dirty = 0; 843 PL_dirty = 0;
692 PL_restartop = 0; 844 PL_restartop = 0;
693 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 845#if PERL_VERSION_ATLEAST (5,10,0)
694 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 846 PL_parser = 0;
847#endif
848
849 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
695 852
696 GvSV (PL_defgv) = newSV (0); 853 GvSV (PL_defgv) = newSV (0);
697 GvAV (PL_defgv) = coro->args; coro->args = 0; 854 GvAV (PL_defgv) = coro->args; coro->args = 0;
698 GvSV (PL_errgv) = newSV (0); 855 GvSV (PL_errgv) = newSV (0);
699 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
700 PL_rs = newSVsv (GvSV (irsgv)); 857 PL_rs = newSVsv (GvSV (irsgv));
701 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
702 859
703 { 860 {
704 dSP; 861 dSP;
705 LOGOP myop; 862 UNOP myop;
706 863
707 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
708 myop.op_next = Nullop; 865 myop.op_next = Nullop;
709 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
710 867
711 PUSHMARK (SP); 868 PUSHMARK (SP);
712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
713 PUTBACK; 870 PUTBACK;
714 PL_op = (OP *)&myop; 871 PL_op = (OP *)&myop;
715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
716 SPAGAIN; 873 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 } 874 }
732}
733 875
876 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM;
885 coro_setup_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */
887
888 PL_op = (OP *)&coro_setup_op;
889
890 /* copy throw, in case it was set before coro_setup */
891 CORO_THROW = coro->except;
892}
893
734static void 894static void
735coro_destroy (pTHX_ struct coro *coro) 895coro_destruct (pTHX_ struct coro *coro)
736{ 896{
737 if (!IN_DESTRUCT) 897 if (!IN_DESTRUCT)
738 { 898 {
739 /* restore all saved variables and stuff */ 899 /* restore all saved variables and stuff */
740 LEAVE_SCOPE (0); 900 LEAVE_SCOPE (0);
… …
759 SvREFCNT_dec (GvSV (irsgv)); 919 SvREFCNT_dec (GvSV (irsgv));
760 920
761 SvREFCNT_dec (PL_diehook); 921 SvREFCNT_dec (PL_diehook);
762 SvREFCNT_dec (PL_warnhook); 922 SvREFCNT_dec (PL_warnhook);
763 923
924 SvREFCNT_dec (CORO_THROW);
764 SvREFCNT_dec (coro->saved_deffh); 925 SvREFCNT_dec (coro->saved_deffh);
765 SvREFCNT_dec (coro->throw); 926 SvREFCNT_dec (coro->rouse_cb);
766 927
767 coro_destroy_stacks (aTHX); 928 coro_destruct_stacks (aTHX);
768} 929}
769 930
770static void 931INLINE void
771free_coro_mortal (pTHX) 932free_coro_mortal (pTHX)
772{ 933{
773 if (expect_true (coro_mortal)) 934 if (expect_true (coro_mortal))
774 { 935 {
775 SvREFCNT_dec (coro_mortal); 936 SvREFCNT_dec (coro_mortal);
… …
780static int 941static int
781runops_trace (pTHX) 942runops_trace (pTHX)
782{ 943{
783 COP *oldcop = 0; 944 COP *oldcop = 0;
784 int oldcxix = -2; 945 int oldcxix = -2;
785 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
786 coro_cctx *cctx = coro->cctx; 947 coro_cctx *cctx = coro->cctx;
787 948
788 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
789 { 950 {
790 PERL_ASYNC_CHECK (); 951 PERL_ASYNC_CHECK ();
… …
809 : cx->blk_gimme == G_SCALAR ? bot + 1 970 : cx->blk_gimme == G_SCALAR ? bot + 1
810 : bot; 971 : bot;
811 972
812 av_extend (av, top - bot); 973 av_extend (av, top - bot);
813 while (bot < top) 974 while (bot < top)
814 av_push (av, SvREFCNT_inc (*bot++)); 975 av_push (av, SvREFCNT_inc_NN (*bot++));
815 976
816 PL_runops = RUNOPS_DEFAULT; 977 PL_runops = RUNOPS_DEFAULT;
817 ENTER; 978 ENTER;
818 SAVETMPS; 979 SAVETMPS;
819 EXTEND (SP, 3); 980 EXTEND (SP, 3);
820 PUSHMARK (SP); 981 PUSHMARK (SP);
821 PUSHs (&PL_sv_no); 982 PUSHs (&PL_sv_no);
822 PUSHs (fullname); 983 PUSHs (fullname);
823 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 984 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
824 PUTBACK; 985 PUTBACK;
825 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 986 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); 987 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
827 SPAGAIN; 988 SPAGAIN;
828 FREETMPS; 989 FREETMPS;
829 LEAVE; 990 LEAVE;
830 PL_runops = runops_trace; 991 PL_runops = runops_trace;
… …
857 SAVETMPS; 1018 SAVETMPS;
858 EXTEND (SP, 3); 1019 EXTEND (SP, 3);
859 PUSHMARK (SP); 1020 PUSHMARK (SP);
860 PUSHs (&PL_sv_yes); 1021 PUSHs (&PL_sv_yes);
861 PUSHs (fullname); 1022 PUSHs (fullname);
862 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
863 PUTBACK; 1024 PUTBACK;
864 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1025 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); 1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
866 SPAGAIN; 1027 SPAGAIN;
867 FREETMPS; 1028 FREETMPS;
868 LEAVE; 1029 LEAVE;
869 PL_runops = runops_trace; 1030 PL_runops = runops_trace;
… …
883 PL_runops = RUNOPS_DEFAULT; 1044 PL_runops = RUNOPS_DEFAULT;
884 PUSHMARK (SP); 1045 PUSHMARK (SP);
885 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1046 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
886 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1047 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
887 PUTBACK; 1048 PUTBACK;
888 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1049 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); 1050 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
890 SPAGAIN; 1051 SPAGAIN;
891 FREETMPS; 1052 FREETMPS;
892 LEAVE; 1053 LEAVE;
893 PL_runops = runops_trace; 1054 PL_runops = runops_trace;
… …
899 1060
900 TAINT_NOT; 1061 TAINT_NOT;
901 return 0; 1062 return 0;
902} 1063}
903 1064
904/* inject a fake call to Coro::State::_cctx_init into the execution */ 1065static struct coro_cctx *cctx_ssl_cctx;
905/* _cctx_init should be careful, as it could be called at almost any time */ 1066static struct CoroSLF cctx_ssl_frame;
906/* during execution of a perl program */ 1067
1068static void
1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1070{
1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1072 ta->next = 0;
1073}
1074
1075static int
1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1077{
1078 *frame = cctx_ssl_frame;
1079
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081}
1082
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
907static void NOINLINE 1084static void NOINLINE
908cctx_prepare (pTHX_ coro_cctx *cctx) 1085cctx_prepare (pTHX_ coro_cctx *cctx)
909{ 1086{
910 dSP;
911 LOGOP myop;
912
913 PL_top_env = &PL_start_env; 1087 PL_top_env = &PL_start_env;
914 1088
915 if (cctx->flags & CC_TRACE) 1089 if (cctx->flags & CC_TRACE)
916 PL_runops = runops_trace; 1090 PL_runops = runops_trace;
917 1091
918 Zero (&myop, 1, LOGOP); 1092 /* we already must be executing an SLF op, there is no other valid way
919 myop.op_next = PL_op; 1093 * that can lead to creation of a new cctx */
920 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
921 1096
922 PUSHMARK (SP); 1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
923 EXTEND (SP, 2); 1098 cctx_ssl_cctx = cctx;
924 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1099 cctx_ssl_frame = slf_frame;
925 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1100
926 PUTBACK; 1101 slf_frame.prepare = slf_prepare_set_stacklevel;
927 PL_op = (OP *)&myop; 1102 slf_frame.check = slf_check_set_stacklevel;
928 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103}
929 SPAGAIN; 1104
1105/* the tail of transfer: execute stuff we can only do after a transfer */
1106INLINE void
1107transfer_tail (pTHX)
1108{
1109 free_coro_mortal (aTHX);
930} 1110}
931 1111
932/* 1112/*
933 * this is a _very_ stripped down perl interpreter ;) 1113 * this is a _very_ stripped down perl interpreter ;)
934 */ 1114 */
935static void 1115static void
936cctx_run (void *arg) 1116cctx_run (void *arg)
937{ 1117{
1118#ifdef USE_ITHREADS
1119# if CORO_PTHREAD
1120 PERL_SET_CONTEXT (coro_thx);
1121# endif
1122#endif
1123 {
938 dTHX; 1124 dTHX;
939 1125
940 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1126 /* normally we would need to skip the entersub here */
941 UNLOCK; 1127 /* 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; 1128 /* PL_nop = PL_nop->op_next */
945 1129
946 /* inject a fake subroutine call to cctx_init */ 1130 /* inject a fake subroutine call to cctx_init */
947 cctx_prepare (aTHX_ (coro_cctx *)arg); 1131 cctx_prepare (aTHX_ (coro_cctx *)arg);
948 1132
1133 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX);
1135
949 /* somebody or something will hit me for both perl_run and PL_restartop */ 1136 /* somebody or something will hit me for both perl_run and PL_restartop */
950 PL_restartop = PL_op; 1137 PL_restartop = PL_op;
951 perl_run (PL_curinterp); 1138 perl_run (PL_curinterp);
952 1139
953 /* 1140 /*
954 * If perl-run returns we assume exit() was being called or the coro 1141 * 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) 1142 * 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 1143 * 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" 1144 * bootstrap-time "top" top_env, as we cannot restore the "main"
958 * coroutine as Coro has no such concept 1145 * coroutine as Coro has no such concept
959 */ 1146 */
960 PL_top_env = main_top_env; 1147 PL_top_env = main_top_env;
961 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 }
962} 1150}
963 1151
964static coro_cctx * 1152static coro_cctx *
965cctx_new () 1153cctx_new ()
966{ 1154{
967 coro_cctx *cctx; 1155 coro_cctx *cctx;
1156
1157 ++cctx_count;
1158 New (0, cctx, 1, coro_cctx);
1159
1160 cctx->gen = cctx_gen;
1161 cctx->flags = 0;
1162 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1163
1164 return cctx;
1165}
1166
1167/* create a new cctx only suitable as source */
1168static coro_cctx *
1169cctx_new_empty ()
1170{
1171 coro_cctx *cctx = cctx_new ();
1172
1173 cctx->sptr = 0;
1174 coro_create (&cctx->cctx, 0, 0, 0, 0);
1175
1176 return cctx;
1177}
1178
1179/* create a new cctx suitable as destination/running a perl interpreter */
1180static coro_cctx *
1181cctx_new_run ()
1182{
1183 coro_cctx *cctx = cctx_new ();
968 void *stack_start; 1184 void *stack_start;
969 size_t stack_size; 1185 size_t stack_size;
970 1186
971 ++cctx_count;
972
973 Newz (0, cctx, 1, coro_cctx);
974
975#if HAVE_MMAP 1187#if HAVE_MMAP
976 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1188 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
977 /* mmap supposedly does allocate-on-write for us */ 1189 /* 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); 1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
979 1191
980 if (cctx->sptr != (void *)-1) 1192 if (cctx->sptr != (void *)-1)
981 { 1193 {
982# if CORO_STACKGUARD 1194 #if CORO_STACKGUARD
983 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
984# endif 1196 #endif
985 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
986 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
987 cctx->flags |= CC_MAPPED; 1199 cctx->flags |= CC_MAPPED;
988 } 1200 }
989 else 1201 else
990#endif 1202#endif
991 { 1203 {
992 cctx->ssize = coro_stacksize * (long)sizeof (long); 1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
993 New (0, cctx->sptr, coro_stacksize, long); 1205 New (0, cctx->sptr, cctx_stacksize, long);
994 1206
995 if (!cctx->sptr) 1207 if (!cctx->sptr)
996 { 1208 {
997 perror ("FATAL: unable to allocate stack for coroutine"); 1209 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
998 _exit (EXIT_FAILURE); 1210 _exit (EXIT_FAILURE);
999 } 1211 }
1000 1212
1001 stack_start = cctx->sptr; 1213 stack_start = cctx->sptr;
1002 stack_size = cctx->ssize; 1214 stack_size = cctx->ssize;
1003 } 1215 }
1004 1216
1005 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
1006 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1007 1222
1008 return cctx; 1223 return cctx;
1009} 1224}
1010 1225
… …
1013{ 1228{
1014 if (!cctx) 1229 if (!cctx)
1015 return; 1230 return;
1016 1231
1017 --cctx_count; 1232 --cctx_count;
1233 coro_destroy (&cctx->cctx);
1018 1234
1235 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr)
1237 {
1019#if CORO_USE_VALGRIND 1238 #if CORO_USE_VALGRIND
1020 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1021#endif 1240 #endif
1022 1241
1023#if HAVE_MMAP 1242#if HAVE_MMAP
1024 if (cctx->flags & CC_MAPPED) 1243 if (cctx->flags & CC_MAPPED)
1025 munmap (cctx->sptr, cctx->ssize); 1244 munmap (cctx->sptr, cctx->ssize);
1026 else 1245 else
1027#endif 1246#endif
1028 Safefree (cctx->sptr); 1247 Safefree (cctx->sptr);
1248 }
1029 1249
1030 Safefree (cctx); 1250 Safefree (cctx);
1031} 1251}
1032 1252
1033/* wether this cctx should be destructed */ 1253/* wether this cctx should be destructed */
1034#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1035 1255
1036static coro_cctx * 1256static coro_cctx *
1037cctx_get (pTHX_ int gimme) 1257cctx_get (pTHX)
1038{ 1258{
1039 while (expect_true (cctx_first[gimme])) 1259 while (expect_true (cctx_first))
1040 { 1260 {
1041 coro_cctx *cctx = cctx_first[gimme]; 1261 coro_cctx *cctx = cctx_first;
1042 cctx_first[gimme] = cctx->next; 1262 cctx_first = cctx->next;
1043 --cctx_idle[gimme]; 1263 --cctx_idle;
1044 1264
1045 if (expect_true (!CCTX_EXPIRED (cctx))) 1265 if (expect_true (!CCTX_EXPIRED (cctx)))
1046 return cctx; 1266 return cctx;
1047 1267
1048 cctx_destroy (cctx); 1268 cctx_destroy (cctx);
1049 } 1269 }
1050 1270
1051 assert (!gimme);
1052 return cctx_new (); 1271 return cctx_new_run ();
1053} 1272}
1054 1273
1055static void 1274static void
1056cctx_put (coro_cctx *cctx, int gimme) 1275cctx_put (coro_cctx *cctx)
1057{ 1276{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1278
1058 /* free another cctx if overlimit */ 1279 /* free another cctx if overlimit */
1059 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX)) 1280 if (expect_false (cctx_idle >= cctx_max_idle))
1060 { 1281 {
1061 coro_cctx *first = cctx_first[gimme]; 1282 coro_cctx *first = cctx_first;
1062 cctx_first[gimme] = first->next; 1283 cctx_first = first->next;
1063 --cctx_idle[gimme]; 1284 --cctx_idle;
1064 1285
1065 cctx_destroy (first); 1286 cctx_destroy (first);
1066 } 1287 }
1067 1288
1068 ++cctx_idle[gimme]; 1289 ++cctx_idle;
1069 cctx->next = cctx_first[gimme]; 1290 cctx->next = cctx_first;
1070 cctx_first[gimme] = cctx; 1291 cctx_first = cctx;
1071} 1292}
1072 1293
1073/** coroutine switching *****************************************************/ 1294/** coroutine switching *****************************************************/
1074 1295
1075static void 1296static void
1076transfer_check (pTHX_ struct coro *prev, struct coro *next) 1297transfer_check (pTHX_ struct coro *prev, struct coro *next)
1077{ 1298{
1299 /* TODO: throwing up here is considered harmful */
1300
1078 if (expect_true (prev != next)) 1301 if (expect_true (prev != next))
1079 { 1302 {
1080 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1303 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"); 1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1082 1305
1083 if (expect_false (next->flags & CF_RUNNING)) 1306 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"); 1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1085 1308
1086 if (expect_false (next->flags & CF_DESTROYED)) 1309 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"); 1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1088 1311
1089 if (
1090#if PERL_VERSION_ATLEAST (5,9,0) 1312#if !PERL_VERSION_ATLEAST (5,10,0)
1091 expect_false (PL_parser)
1092#else
1093 expect_false (PL_lex_state != LEX_NOTPARSING) 1313 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1094#endif
1095 )
1096 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1315#endif
1097 } 1316 }
1098} 1317}
1099 1318
1100/* always use the TRANSFER macro */ 1319/* always use the TRANSFER macro */
1101static void NOINLINE 1320static void NOINLINE /* noinline so we have a fixed stackframe */
1102transfer (pTHX_ struct coro *prev, struct coro *next) 1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1103{ 1322{
1104 dSTACKLEVEL; 1323 dSTACKLEVEL;
1105 1324
1106 /* sometimes transfer is only called to set idle_sp */ 1325 /* sometimes transfer is only called to set idle_sp */
1107 if (expect_false (!next)) 1326 if (expect_false (!next))
… …
1113 { 1332 {
1114 coro_cctx *prev__cctx; 1333 coro_cctx *prev__cctx;
1115 1334
1116 if (expect_false (prev->flags & CF_NEW)) 1335 if (expect_false (prev->flags & CF_NEW))
1117 { 1336 {
1118 /* create a new empty context */ 1337 /* create a new empty/source context */
1119 Newz (0, prev->cctx, 1, coro_cctx); 1338 prev->cctx = cctx_new_empty ();
1120 prev->flags &= ~CF_NEW; 1339 prev->flags &= ~CF_NEW;
1121 prev->flags |= CF_RUNNING; 1340 prev->flags |= CF_RUNNING;
1122 } 1341 }
1123 1342
1124 prev->flags &= ~CF_RUNNING; 1343 prev->flags &= ~CF_RUNNING;
1125 next->flags |= CF_RUNNING; 1344 next->flags |= CF_RUNNING;
1126 1345
1127 LOCK; 1346 /* first get rid of the old state */
1347 save_perl (aTHX_ prev);
1128 1348
1129 if (expect_false (next->flags & CF_NEW)) 1349 if (expect_false (next->flags & CF_NEW))
1130 { 1350 {
1131 /* need to start coroutine */ 1351 /* need to start coroutine */
1132 next->flags &= ~CF_NEW; 1352 next->flags &= ~CF_NEW;
1133 /* first get rid of the old state */
1134 save_perl (aTHX_ prev);
1135 /* setup coroutine call */ 1353 /* setup coroutine call */
1136 coro_setup (aTHX_ next); 1354 coro_setup (aTHX_ next);
1137 } 1355 }
1138 else 1356 else
1357 load_perl (aTHX_ next);
1358
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */
1362 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE)
1365 && !force_cctx
1366 ))
1139 { 1367 {
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 */ 1368 /* 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)); 1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1152 1370
1153 prev->cctx = 0; 1371 prev->cctx = 0;
1154 1372
1155 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1373 /* 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 */ 1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1157 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1375 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1158 if (!next->cctx) 1376 if (!next->cctx)
1159 next->cctx = cctx_get (aTHX_ next->gimme); 1377 next->cctx = cctx_get (aTHX);
1160 1378
1161 cctx_put (prev__cctx, prev->gimme); 1379 cctx_put (prev__cctx);
1162 } 1380 }
1163 1381
1164 ++next->usecount; 1382 ++next->usecount;
1165 1383
1166 if (expect_true (!next->cctx)) 1384 if (expect_true (!next->cctx))
1167 next->cctx = cctx_get (aTHX_ next->gimme); 1385 next->cctx = cctx_get (aTHX);
1168 1386
1169 if (expect_false (prev__cctx != next->cctx)) 1387 if (expect_false (prev__cctx != next->cctx))
1170 { 1388 {
1171 prev__cctx->top_env = PL_top_env; 1389 prev__cctx->top_env = PL_top_env;
1172 PL_top_env = next->cctx->top_env; 1390 PL_top_env = next->cctx->top_env;
1173 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1174 } 1392 }
1175 1393
1176 free_coro_mortal (aTHX); 1394 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 } 1395 }
1192} 1396}
1193 1397
1194struct transfer_args
1195{
1196 struct coro *prev, *next;
1197};
1198
1199#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1398#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) 1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1201 1400
1202/** high level stuff ********************************************************/ 1401/** high level stuff ********************************************************/
1203 1402
1204static int 1403static int
1205coro_state_destroy (pTHX_ struct coro *coro) 1404coro_state_destroy (pTHX_ struct coro *coro)
1206{ 1405{
1207 if (coro->flags & CF_DESTROYED) 1406 if (coro->flags & CF_DESTROYED)
1208 return 0; 1407 return 0;
1408
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro);
1209 1411
1210 coro->flags |= CF_DESTROYED; 1412 coro->flags |= CF_DESTROYED;
1211 1413
1212 if (coro->flags & CF_READY) 1414 if (coro->flags & CF_READY)
1213 { 1415 {
1214 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1416 /* reduce nready, as destroying a ready coro effectively unreadies it */
1215 /* alternative: look through all ready queues and remove the coro */ 1417 /* alternative: look through all ready queues and remove the coro */
1216 LOCK;
1217 --coro_nready; 1418 --coro_nready;
1218 UNLOCK;
1219 } 1419 }
1220 else 1420 else
1221 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1222 1422
1223 if (coro->mainstack && coro->mainstack != main_mainstack) 1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1224 { 1424 {
1225 struct coro temp; 1425 struct coro temp;
1226 1426
1227 if (coro->flags & CF_RUNNING) 1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1228 croak ("FATAL: tried to destroy currently running coroutine");
1229 1428
1230 save_perl (aTHX_ &temp); 1429 save_perl (aTHX_ &temp);
1231 load_perl (aTHX_ coro); 1430 load_perl (aTHX_ coro);
1232 1431
1233 coro_destroy (aTHX_ coro); 1432 coro_destruct (aTHX_ coro);
1234 1433
1235 load_perl (aTHX_ &temp); 1434 load_perl (aTHX_ &temp);
1236 1435
1237 coro->slot = 0; 1436 coro->slot = 0;
1238 } 1437 }
… …
1284# define MGf_DUP 0 1483# define MGf_DUP 0
1285#endif 1484#endif
1286}; 1485};
1287 1486
1288static void 1487static void
1289prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1488prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1290{ 1489{
1291 ta->prev = SvSTATE (prev_sv); 1490 ta->prev = SvSTATE (prev_sv);
1292 ta->next = SvSTATE (next_sv); 1491 ta->next = SvSTATE (next_sv);
1293 TRANSFER_CHECK (*ta); 1492 TRANSFER_CHECK (*ta);
1294} 1493}
1295 1494
1296static void 1495static void
1297api_transfer (SV *prev_sv, SV *next_sv) 1496api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1298{ 1497{
1299 dTHX;
1300 struct transfer_args ta; 1498 struct coro_transfer_args ta;
1301 1499
1302 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1303 TRANSFER (ta); 1501 TRANSFER (ta, 1);
1502}
1503
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1304} 1525}
1305 1526
1306/** Coro ********************************************************************/ 1527/** Coro ********************************************************************/
1307 1528
1308static void 1529INLINE void
1309coro_enq (pTHX_ SV *coro_sv) 1530coro_enq (pTHX_ struct coro *coro)
1310{ 1531{
1311 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1312} 1533}
1313 1534
1314static SV * 1535INLINE SV *
1315coro_deq (pTHX_ int min_prio) 1536coro_deq (pTHX)
1316{ 1537{
1317 int prio = PRIO_MAX - PRIO_MIN; 1538 int prio;
1318 1539
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; ) 1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1324 if (AvFILLp (coro_ready [prio]) >= 0) 1541 if (AvFILLp (coro_ready [prio]) >= 0)
1325 return av_shift (coro_ready [prio]); 1542 return av_shift (coro_ready [prio]);
1326 1543
1327 return 0; 1544 return 0;
1328} 1545}
1329 1546
1330static int 1547static int
1331api_ready (SV *coro_sv) 1548api_ready (pTHX_ SV *coro_sv)
1332{ 1549{
1333 dTHX;
1334 struct coro *coro; 1550 struct coro *coro;
1551 SV *sv_hook;
1552 void (*xs_hook)(void);
1335 1553
1336 if (SvROK (coro_sv)) 1554 if (SvROK (coro_sv))
1337 coro_sv = SvRV (coro_sv); 1555 coro_sv = SvRV (coro_sv);
1338 1556
1339 coro = SvSTATE (coro_sv); 1557 coro = SvSTATE (coro_sv);
… …
1341 if (coro->flags & CF_READY) 1559 if (coro->flags & CF_READY)
1342 return 0; 1560 return 0;
1343 1561
1344 coro->flags |= CF_READY; 1562 coro->flags |= CF_READY;
1345 1563
1346 LOCK; 1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1347 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1566
1567 coro_enq (aTHX_ coro);
1348 ++coro_nready; 1568 ++coro_nready;
1349 UNLOCK; 1569
1570 if (sv_hook)
1571 {
1572 dSP;
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1580
1581 FREETMPS;
1582 LEAVE;
1583 }
1584
1585 if (xs_hook)
1586 xs_hook ();
1350 1587
1351 return 1; 1588 return 1;
1352} 1589}
1353 1590
1354static int 1591static int
1355api_is_ready (SV *coro_sv) 1592api_is_ready (pTHX_ SV *coro_sv)
1356{ 1593{
1357 dTHX;
1358 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1594 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1359} 1595}
1360 1596
1361static void 1597INLINE void
1362prepare_schedule (pTHX_ struct transfer_args *ta) 1598prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1363{ 1599{
1364 SV *prev_sv, *next_sv; 1600 SV *prev_sv, *next_sv;
1365 1601
1366 for (;;) 1602 for (;;)
1367 { 1603 {
1368 LOCK;
1369 next_sv = coro_deq (aTHX_ PRIO_MIN); 1604 next_sv = coro_deq (aTHX);
1370 1605
1371 /* nothing to schedule: call the idle handler */ 1606 /* nothing to schedule: call the idle handler */
1372 if (expect_false (!next_sv)) 1607 if (expect_false (!next_sv))
1373 { 1608 {
1374 dSP; 1609 dSP;
1375 UNLOCK;
1376 1610
1377 ENTER; 1611 ENTER;
1378 SAVETMPS; 1612 SAVETMPS;
1379 1613
1380 PUSHMARK (SP); 1614 PUSHMARK (SP);
1381 PUTBACK; 1615 PUTBACK;
1382 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1383 1617
1384 FREETMPS; 1618 FREETMPS;
1385 LEAVE; 1619 LEAVE;
1386 continue; 1620 continue;
1387 } 1621 }
1388 1622
1389 ta->next = SvSTATE (next_sv); 1623 ta->next = SvSTATE_hv (next_sv);
1390 1624
1391 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1392 if (expect_false (ta->next->flags & CF_DESTROYED)) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1393 { 1627 {
1394 UNLOCK;
1395 SvREFCNT_dec (next_sv); 1628 SvREFCNT_dec (next_sv);
1396 /* coro_nready is already taken care of by destroy */ 1629 /* coro_nready has already been taken care of by destroy */
1397 continue; 1630 continue;
1398 } 1631 }
1399 1632
1400 --coro_nready; 1633 --coro_nready;
1401 UNLOCK;
1402 break; 1634 break;
1403 } 1635 }
1404 1636
1405 /* free this only after the transfer */ 1637 /* free this only after the transfer */
1406 prev_sv = SvRV (coro_current); 1638 prev_sv = SvRV (coro_current);
1407 ta->prev = SvSTATE (prev_sv); 1639 ta->prev = SvSTATE_hv (prev_sv);
1408 TRANSFER_CHECK (*ta); 1640 TRANSFER_CHECK (*ta);
1409 assert (ta->next->flags & CF_READY); 1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1410 ta->next->flags &= ~CF_READY; 1642 ta->next->flags &= ~CF_READY;
1411 SvRV_set (coro_current, next_sv); 1643 SvRV_set (coro_current, next_sv);
1412 1644
1413 LOCK;
1414 free_coro_mortal (aTHX); 1645 free_coro_mortal (aTHX);
1415 coro_mortal = prev_sv; 1646 coro_mortal = prev_sv;
1416 UNLOCK;
1417} 1647}
1418 1648
1419static void 1649INLINE void
1420prepare_cede (pTHX_ struct transfer_args *ta) 1650prepare_cede (pTHX_ struct coro_transfer_args *ta)
1421{ 1651{
1422 api_ready (coro_current); 1652 api_ready (aTHX_ coro_current);
1423 prepare_schedule (aTHX_ ta); 1653 prepare_schedule (aTHX_ ta);
1424} 1654}
1425 1655
1656INLINE void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{
1659 SV *prev = SvRV (coro_current);
1660
1661 if (coro_nready)
1662 {
1663 prepare_schedule (aTHX_ ta);
1664 api_ready (aTHX_ prev);
1665 }
1666 else
1667 prepare_nop (aTHX_ ta);
1668}
1669
1670static void
1671api_schedule (pTHX)
1672{
1673 struct coro_transfer_args ta;
1674
1675 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1);
1677}
1678
1426static int 1679static int
1427prepare_cede_notself (pTHX_ struct transfer_args *ta) 1680api_cede (pTHX)
1428{ 1681{
1429 if (coro_nready) 1682 struct coro_transfer_args ta;
1430 { 1683
1431 SV *prev = SvRV (coro_current);
1432 prepare_schedule (aTHX_ ta); 1684 prepare_cede (aTHX_ &ta);
1433 api_ready (prev); 1685
1686 if (expect_true (ta.prev != ta.next))
1687 {
1688 TRANSFER (ta, 1);
1434 return 1; 1689 return 1;
1435 } 1690 }
1436 else 1691 else
1437 return 0; 1692 return 0;
1438} 1693}
1439 1694
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 1695static int
1451api_cede (void) 1696api_cede_notself (pTHX)
1452{ 1697{
1453 dTHX; 1698 if (coro_nready)
1699 {
1454 struct transfer_args ta; 1700 struct coro_transfer_args ta;
1455 1701
1456 prepare_cede (aTHX_ &ta); 1702 prepare_cede_notself (aTHX_ &ta);
1457
1458 if (expect_true (ta.prev != ta.next))
1459 {
1460 TRANSFER (ta); 1703 TRANSFER (ta, 1);
1461 return 1; 1704 return 1;
1462 } 1705 }
1463 else 1706 else
1464 return 0; 1707 return 0;
1465} 1708}
1466 1709
1467static int 1710static 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) 1711api_trace (pTHX_ SV *coro_sv, int flags)
1484{ 1712{
1485 dTHX;
1486 struct coro *coro = SvSTATE (coro_sv); 1713 struct coro *coro = SvSTATE (coro_sv);
1487 1714
1488 if (flags & CC_TRACE) 1715 if (flags & CC_TRACE)
1489 { 1716 {
1490 if (!coro->cctx) 1717 if (!coro->cctx)
1491 coro->cctx = cctx_new (); 1718 coro->cctx = cctx_new_run ();
1492 else if (!(coro->cctx->flags & CC_TRACE)) 1719 else if (!(coro->cctx->flags & CC_TRACE))
1493 croak ("cannot enable tracing on coroutine with custom stack"); 1720 croak ("cannot enable tracing on coroutine with custom stack,");
1494 1721
1495 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1496 } 1723 }
1497 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1498 { 1725 {
… …
1503 else 1730 else
1504 coro->slot->runops = RUNOPS_DEFAULT; 1731 coro->slot->runops = RUNOPS_DEFAULT;
1505 } 1732 }
1506} 1733}
1507 1734
1735/*****************************************************************************/
1736/* rouse callback */
1737
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739
1740static void
1741coro_rouse_callback (pTHX_ CV *cv)
1742{
1743 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG;
1745
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 {
1748 /* first call, set args */
1749 int i;
1750 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752
1753 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756
1757 /* better take a full copy of the arguments */
1758 while (items--)
1759 av_store (av, items, newSVsv (ST (items)));
1760 }
1761
1762 XSRETURN_EMPTY;
1763}
1764
1765static int
1766slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1767{
1768 SV *data = (SV *)frame->data;
1769
1770 if (CORO_THROW)
1771 return 0;
1772
1773 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1774 return 1;
1775
1776 /* now push all results on the stack */
1777 {
1778 dSP;
1779 AV *av = (AV *)SvRV (data);
1780 int i;
1781
1782 EXTEND (SP, AvFILLp (av) + 1);
1783 for (i = 0; i <= AvFILLp (av); ++i)
1784 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1785
1786 /* we have stolen the elements, so ste length to zero and free */
1787 AvFILLp (av) = -1;
1788 av_undef (av);
1789
1790 PUTBACK;
1791 }
1792
1793 return 0;
1794}
1795
1796static void
1797slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1798{
1799 SV *cb;
1800
1801 if (items)
1802 cb = arg [0];
1803 else
1804 {
1805 struct coro *coro = SvSTATE_current;
1806
1807 if (!coro->rouse_cb)
1808 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1809
1810 cb = sv_2mortal (coro->rouse_cb);
1811 coro->rouse_cb = 0;
1812 }
1813
1814 if (!SvROK (cb)
1815 || SvTYPE (SvRV (cb)) != SVt_PVCV
1816 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1817 croak ("Coro::rouse_wait called with illegal callback argument,");
1818
1819 {
1820 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1821 SV *data = (SV *)GENSUB_ARG;
1822
1823 frame->data = (void *)data;
1824 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1825 frame->check = slf_check_rouse_wait;
1826 }
1827}
1828
1829static SV *
1830coro_new_rouse_cb (pTHX)
1831{
1832 HV *hv = (HV *)SvRV (coro_current);
1833 struct coro *coro = SvSTATE_hv (hv);
1834 SV *data = newRV_inc ((SV *)hv);
1835 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1836
1837 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1838 SvREFCNT_dec (data); /* magicext increases the refcount */
1839
1840 SvREFCNT_dec (coro->rouse_cb);
1841 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1842
1843 return cb;
1844}
1845
1846/*****************************************************************************/
1847/* schedule-like-function opcode (SLF) */
1848
1849static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1850static const CV *slf_cv;
1851static SV **slf_argv;
1852static int slf_argc, slf_arga; /* count, allocated */
1853static I32 slf_ax; /* top of stack, for restore */
1854
1855/* this restores the stack in the case we patched the entersub, to */
1856/* recreate the stack frame as perl will on following calls */
1857/* since entersub cleared the stack */
1858static OP *
1859pp_restore (pTHX)
1860{
1861 int i;
1862 SV **SP = PL_stack_base + slf_ax;
1863
1864 PUSHMARK (SP);
1865
1866 EXTEND (SP, slf_argc + 1);
1867
1868 for (i = 0; i < slf_argc; ++i)
1869 PUSHs (sv_2mortal (slf_argv [i]));
1870
1871 PUSHs ((SV *)CvGV (slf_cv));
1872
1873 RETURNOP (slf_restore.op_first);
1874}
1875
1876static void
1877slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1878{
1879 SV **arg = (SV **)slf_frame.data;
1880
1881 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1882}
1883
1884static void
1885slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1886{
1887 if (items != 2)
1888 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1889
1890 frame->prepare = slf_prepare_transfer;
1891 frame->check = slf_check_nop;
1892 frame->data = (void *)arg; /* let's hope it will stay valid */
1893}
1894
1895static void
1896slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1897{
1898 frame->prepare = prepare_schedule;
1899 frame->check = slf_check_nop;
1900}
1901
1902static void
1903slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{
1905 frame->prepare = prepare_cede;
1906 frame->check = slf_check_nop;
1907}
1908
1909static void
1910slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{
1912 frame->prepare = prepare_cede_notself;
1913 frame->check = slf_check_nop;
1914}
1915
1916/*
1917 * these not obviously related functions are all rolled into one
1918 * function to increase chances that they all will call transfer with the same
1919 * stack offset
1920 * SLF stands for "schedule-like-function".
1921 */
1922static OP *
1923pp_slf (pTHX)
1924{
1925 I32 checkmark; /* mark SP to see how many elements check has pushed */
1926
1927 /* set up the slf frame, unless it has already been set-up */
1928 /* the latter happens when a new coro has been started */
1929 /* or when a new cctx was attached to an existing coroutine */
1930 if (expect_true (!slf_frame.prepare))
1931 {
1932 /* first iteration */
1933 dSP;
1934 SV **arg = PL_stack_base + TOPMARK + 1;
1935 int items = SP - arg; /* args without function object */
1936 SV *gv = *sp;
1937
1938 /* do a quick consistency check on the "function" object, and if it isn't */
1939 /* for us, divert to the real entersub */
1940 if (SvTYPE (gv) != SVt_PVGV
1941 || !GvCV (gv)
1942 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1943 return PL_ppaddr[OP_ENTERSUB](aTHX);
1944
1945 if (!(PL_op->op_flags & OPf_STACKED))
1946 {
1947 /* ampersand-form of call, use @_ instead of stack */
1948 AV *av = GvAV (PL_defgv);
1949 arg = AvARRAY (av);
1950 items = AvFILLp (av) + 1;
1951 }
1952
1953 /* now call the init function, which needs to set up slf_frame */
1954 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1955 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1956
1957 /* pop args */
1958 SP = PL_stack_base + POPMARK;
1959
1960 PUTBACK;
1961 }
1962
1963 /* now that we have a slf_frame, interpret it! */
1964 /* we use a callback system not to make the code needlessly */
1965 /* complicated, but so we can run multiple perl coros from one cctx */
1966
1967 do
1968 {
1969 struct coro_transfer_args ta;
1970
1971 slf_frame.prepare (aTHX_ &ta);
1972 TRANSFER (ta, 0);
1973
1974 checkmark = PL_stack_sp - PL_stack_base;
1975 }
1976 while (slf_frame.check (aTHX_ &slf_frame));
1977
1978 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1979
1980 /* exception handling */
1981 if (expect_false (CORO_THROW))
1982 {
1983 SV *exception = sv_2mortal (CORO_THROW);
1984
1985 CORO_THROW = 0;
1986 sv_setsv (ERRSV, exception);
1987 croak (0);
1988 }
1989
1990 /* return value handling - mostly like entersub */
1991 /* make sure we put something on the stack in scalar context */
1992 if (GIMME_V == G_SCALAR)
1993 {
1994 dSP;
1995 SV **bot = PL_stack_base + checkmark;
1996
1997 if (sp == bot) /* too few, push undef */
1998 bot [1] = &PL_sv_undef;
1999 else if (sp != bot + 1) /* too many, take last one */
2000 bot [1] = *sp;
2001
2002 SP = bot + 1;
2003
2004 PUTBACK;
2005 }
2006
2007 return NORMAL;
2008}
2009
2010static void
2011api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2012{
2013 int i;
2014 SV **arg = PL_stack_base + ax;
2015 int items = PL_stack_sp - arg + 1;
2016
2017 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2018
2019 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2020 && PL_op->op_ppaddr != pp_slf)
2021 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2022
2023 CvFLAGS (cv) |= CVf_SLF;
2024 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2025 slf_cv = cv;
2026
2027 /* we patch the op, and then re-run the whole call */
2028 /* we have to put the same argument on the stack for this to work */
2029 /* and this will be done by pp_restore */
2030 slf_restore.op_next = (OP *)&slf_restore;
2031 slf_restore.op_type = OP_CUSTOM;
2032 slf_restore.op_ppaddr = pp_restore;
2033 slf_restore.op_first = PL_op;
2034
2035 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2036
2037 if (PL_op->op_flags & OPf_STACKED)
2038 {
2039 if (items > slf_arga)
2040 {
2041 slf_arga = items;
2042 free (slf_argv);
2043 slf_argv = malloc (slf_arga * sizeof (SV *));
2044 }
2045
2046 slf_argc = items;
2047
2048 for (i = 0; i < items; ++i)
2049 slf_argv [i] = SvREFCNT_inc (arg [i]);
2050 }
2051 else
2052 slf_argc = 0;
2053
2054 PL_op->op_ppaddr = pp_slf;
2055 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2056
2057 PL_op = (OP *)&slf_restore;
2058}
2059
2060/*****************************************************************************/
2061/* PerlIO::cede */
2062
2063typedef struct
2064{
2065 PerlIOBuf base;
2066 NV next, every;
2067} PerlIOCede;
2068
2069static IV
2070PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2071{
2072 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2073
2074 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2075 self->next = nvtime () + self->every;
2076
2077 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2078}
2079
2080static SV *
2081PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2082{
2083 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2084
2085 return newSVnv (self->every);
2086}
2087
2088static IV
2089PerlIOCede_flush (pTHX_ PerlIO *f)
2090{
2091 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2092 double now = nvtime ();
2093
2094 if (now >= self->next)
2095 {
2096 api_cede (aTHX);
2097 self->next = now + self->every;
2098 }
2099
2100 return PerlIOBuf_flush (aTHX_ f);
2101}
2102
2103static PerlIO_funcs PerlIO_cede =
2104{
2105 sizeof(PerlIO_funcs),
2106 "cede",
2107 sizeof(PerlIOCede),
2108 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2109 PerlIOCede_pushed,
2110 PerlIOBuf_popped,
2111 PerlIOBuf_open,
2112 PerlIOBase_binmode,
2113 PerlIOCede_getarg,
2114 PerlIOBase_fileno,
2115 PerlIOBuf_dup,
2116 PerlIOBuf_read,
2117 PerlIOBuf_unread,
2118 PerlIOBuf_write,
2119 PerlIOBuf_seek,
2120 PerlIOBuf_tell,
2121 PerlIOBuf_close,
2122 PerlIOCede_flush,
2123 PerlIOBuf_fill,
2124 PerlIOBase_eof,
2125 PerlIOBase_error,
2126 PerlIOBase_clearerr,
2127 PerlIOBase_setlinebuf,
2128 PerlIOBuf_get_base,
2129 PerlIOBuf_bufsiz,
2130 PerlIOBuf_get_ptr,
2131 PerlIOBuf_get_cnt,
2132 PerlIOBuf_set_ptrcnt,
2133};
2134
2135/*****************************************************************************/
2136/* Coro::Semaphore & Coro::Signal */
2137
2138static SV *
2139coro_waitarray_new (pTHX_ int count)
2140{
2141 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2142 AV *av = newAV ();
2143 SV **ary;
2144
2145 /* unfortunately, building manually saves memory */
2146 Newx (ary, 2, SV *);
2147 AvALLOC (av) = ary;
2148 SvPV_set ((SV *)av, (char *)ary); /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2149 AvMAX (av) = 1;
2150 AvFILLp (av) = 0;
2151 ary [0] = newSViv (count);
2152
2153 return newRV_noinc ((SV *)av);
2154}
2155
2156/* semaphore */
2157
2158static void
2159coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2160{
2161 SV *count_sv = AvARRAY (av)[0];
2162 IV count = SvIVX (count_sv);
2163
2164 count += adjust;
2165 SvIVX (count_sv) = count;
2166
2167 /* now wake up as many waiters as are expected to lock */
2168 while (count > 0 && AvFILLp (av) > 0)
2169 {
2170 SV *cb;
2171
2172 /* swap first two elements so we can shift a waiter */
2173 AvARRAY (av)[0] = AvARRAY (av)[1];
2174 AvARRAY (av)[1] = count_sv;
2175 cb = av_shift (av);
2176
2177 if (SvOBJECT (cb))
2178 api_ready (aTHX_ cb);
2179 else
2180 croak ("callbacks not yet supported");
2181
2182 SvREFCNT_dec (cb);
2183
2184 --count;
2185 }
2186}
2187
2188static void
2189coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2190{
2191 /* call $sem->adjust (0) to possibly wake up some other waiters */
2192 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2193}
2194
2195static int
2196slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2197{
2198 AV *av = (AV *)frame->data;
2199 SV *count_sv = AvARRAY (av)[0];
2200
2201 /* if we are about to throw, don't actually acquire the lock, just throw */
2202 if (CORO_THROW)
2203 return 0;
2204 else if (SvIVX (count_sv) > 0)
2205 {
2206 SvSTATE_current->on_destroy = 0;
2207
2208 if (acquire)
2209 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2210 else
2211 coro_semaphore_adjust (aTHX_ av, 0);
2212
2213 return 0;
2214 }
2215 else
2216 {
2217 int i;
2218 /* if we were woken up but can't down, we look through the whole */
2219 /* waiters list and only add us if we aren't in there already */
2220 /* this avoids some degenerate memory usage cases */
2221
2222 for (i = 1; i <= AvFILLp (av); ++i)
2223 if (AvARRAY (av)[i] == SvRV (coro_current))
2224 return 1;
2225
2226 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2227 return 1;
2228 }
2229}
2230
2231static int
2232slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2233{
2234 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2235}
2236
2237static int
2238slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2239{
2240 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2241}
2242
2243static void
2244slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2245{
2246 AV *av = (AV *)SvRV (arg [0]);
2247
2248 if (SvIVX (AvARRAY (av)[0]) > 0)
2249 {
2250 frame->data = (void *)av;
2251 frame->prepare = prepare_nop;
2252 }
2253 else
2254 {
2255 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2256
2257 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2258 frame->prepare = prepare_schedule;
2259
2260 /* to avoid race conditions when a woken-up coro gets terminated */
2261 /* we arrange for a temporary on_destroy that calls adjust (0) */
2262 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2263 }
2264}
2265
2266static void
2267slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2268{
2269 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2270 frame->check = slf_check_semaphore_down;
2271}
2272
2273static void
2274slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2275{
2276 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2277 frame->check = slf_check_semaphore_wait;
2278}
2279
2280/* signal */
2281
2282static void
2283coro_signal_wake (pTHX_ AV *av, int count)
2284{
2285 SvIVX (AvARRAY (av)[0]) = 0;
2286
2287 /* now signal count waiters */
2288 while (count > 0 && AvFILLp (av) > 0)
2289 {
2290 SV *cb;
2291
2292 /* swap first two elements so we can shift a waiter */
2293 cb = AvARRAY (av)[0];
2294 AvARRAY (av)[0] = AvARRAY (av)[1];
2295 AvARRAY (av)[1] = cb;
2296
2297 cb = av_shift (av);
2298
2299 api_ready (aTHX_ cb);
2300 sv_setiv (cb, 0); /* signal waiter */
2301 SvREFCNT_dec (cb);
2302
2303 --count;
2304 }
2305}
2306
2307static int
2308slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2309{
2310 /* if we are about to throw, also stop waiting */
2311 return SvROK ((SV *)frame->data) && !CORO_THROW;
2312}
2313
2314static void
2315slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2316{
2317 AV *av = (AV *)SvRV (arg [0]);
2318
2319 if (SvIVX (AvARRAY (av)[0]))
2320 {
2321 SvIVX (AvARRAY (av)[0]) = 0;
2322 frame->prepare = prepare_nop;
2323 frame->check = slf_check_nop;
2324 }
2325 else
2326 {
2327 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2328
2329 av_push (av, waiter);
2330
2331 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2332 frame->prepare = prepare_schedule;
2333 frame->check = slf_check_signal_wait;
2334 }
2335}
2336
2337/*****************************************************************************/
2338/* Coro::AIO */
2339
2340#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2341
2342/* helper storage struct */
2343struct io_state
2344{
2345 int errorno;
2346 I32 laststype; /* U16 in 5.10.0 */
2347 int laststatval;
2348 Stat_t statcache;
2349};
2350
2351static void
2352coro_aio_callback (pTHX_ CV *cv)
2353{
2354 dXSARGS;
2355 AV *state = (AV *)GENSUB_ARG;
2356 SV *coro = av_pop (state);
2357 SV *data_sv = newSV (sizeof (struct io_state));
2358
2359 av_extend (state, items);
2360
2361 sv_upgrade (data_sv, SVt_PV);
2362 SvCUR_set (data_sv, sizeof (struct io_state));
2363 SvPOK_only (data_sv);
2364
2365 {
2366 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2367
2368 data->errorno = errno;
2369 data->laststype = PL_laststype;
2370 data->laststatval = PL_laststatval;
2371 data->statcache = PL_statcache;
2372 }
2373
2374 /* now build the result vector out of all the parameters and the data_sv */
2375 {
2376 int i;
2377
2378 for (i = 0; i < items; ++i)
2379 av_push (state, SvREFCNT_inc_NN (ST (i)));
2380 }
2381
2382 av_push (state, data_sv);
2383
2384 api_ready (aTHX_ coro);
2385 SvREFCNT_dec (coro);
2386 SvREFCNT_dec ((AV *)state);
2387}
2388
2389static int
2390slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2391{
2392 AV *state = (AV *)frame->data;
2393
2394 /* if we are about to throw, return early */
2395 /* this does not cancel the aio request, but at least */
2396 /* it quickly returns */
2397 if (CORO_THROW)
2398 return 0;
2399
2400 /* one element that is an RV? repeat! */
2401 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2402 return 1;
2403
2404 /* restore status */
2405 {
2406 SV *data_sv = av_pop (state);
2407 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2408
2409 errno = data->errorno;
2410 PL_laststype = data->laststype;
2411 PL_laststatval = data->laststatval;
2412 PL_statcache = data->statcache;
2413
2414 SvREFCNT_dec (data_sv);
2415 }
2416
2417 /* push result values */
2418 {
2419 dSP;
2420 int i;
2421
2422 EXTEND (SP, AvFILLp (state) + 1);
2423 for (i = 0; i <= AvFILLp (state); ++i)
2424 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2425
2426 PUTBACK;
2427 }
2428
2429 return 0;
2430}
2431
2432static void
2433slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2434{
2435 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2436 SV *coro_hv = SvRV (coro_current);
2437 struct coro *coro = SvSTATE_hv (coro_hv);
2438
2439 /* put our coroutine id on the state arg */
2440 av_push (state, SvREFCNT_inc_NN (coro_hv));
2441
2442 /* first see whether we have a non-zero priority and set it as AIO prio */
2443 if (coro->prio)
2444 {
2445 dSP;
2446
2447 static SV *prio_cv;
2448 static SV *prio_sv;
2449
2450 if (expect_false (!prio_cv))
2451 {
2452 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2453 prio_sv = newSViv (0);
2454 }
2455
2456 PUSHMARK (SP);
2457 sv_setiv (prio_sv, coro->prio);
2458 XPUSHs (prio_sv);
2459
2460 PUTBACK;
2461 call_sv (prio_cv, G_VOID | G_DISCARD);
2462 }
2463
2464 /* now call the original request */
2465 {
2466 dSP;
2467 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2468 int i;
2469
2470 PUSHMARK (SP);
2471
2472 /* first push all args to the stack */
2473 EXTEND (SP, items + 1);
2474
2475 for (i = 0; i < items; ++i)
2476 PUSHs (arg [i]);
2477
2478 /* now push the callback closure */
2479 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2480
2481 /* now call the AIO function - we assume our request is uncancelable */
2482 PUTBACK;
2483 call_sv ((SV *)req, G_VOID | G_DISCARD);
2484 }
2485
2486 /* now that the requets is going, we loop toll we have a result */
2487 frame->data = (void *)state;
2488 frame->prepare = prepare_schedule;
2489 frame->check = slf_check_aio_req;
2490}
2491
2492static void
2493coro_aio_req_xs (pTHX_ CV *cv)
2494{
2495 dXSARGS;
2496
2497 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2498
2499 XSRETURN_EMPTY;
2500}
2501
2502/*****************************************************************************/
2503
1508MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2504MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1509 2505
1510PROTOTYPES: DISABLE 2506PROTOTYPES: DISABLE
1511 2507
1512BOOT: 2508BOOT:
1513{ 2509{
1514#ifdef USE_ITHREADS 2510#ifdef USE_ITHREADS
1515 MUTEX_INIT (&coro_mutex); 2511# if CORO_PTHREAD
2512 coro_thx = PERL_GET_CONTEXT;
2513# endif
1516#endif 2514#endif
1517 BOOT_PAGESIZE; 2515 BOOT_PAGESIZE;
1518 2516
1519 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2517 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1520 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2518 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1521 2519
2520 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2521 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2522 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2523
1522 hv_sig = coro_get_hv ("SIG", TRUE); 2524 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1523 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2525 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1524 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2526 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 2527
1529 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2528 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1530 2529
1531 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2530 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1532 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2531 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1537 main_top_env = PL_top_env; 2536 main_top_env = PL_top_env;
1538 2537
1539 while (main_top_env->je_prev) 2538 while (main_top_env->je_prev)
1540 main_top_env = main_top_env->je_prev; 2539 main_top_env = main_top_env->je_prev;
1541 2540
2541 {
2542 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2543
2544 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2545 hv_store_ent (PL_custom_op_names, slf,
2546 newSVpv ("coro_slf", 0), 0);
2547
2548 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2549 hv_store_ent (PL_custom_op_descs, slf,
2550 newSVpv ("coro schedule like function", 0), 0);
2551 }
2552
1542 coroapi.ver = CORO_API_VERSION; 2553 coroapi.ver = CORO_API_VERSION;
2554 coroapi.rev = CORO_API_REVISION;
2555
1543 coroapi.transfer = api_transfer; 2556 coroapi.transfer = api_transfer;
2557
2558 coroapi.sv_state = SvSTATE_;
2559 coroapi.execute_slf = api_execute_slf;
2560 coroapi.prepare_nop = prepare_nop;
2561 coroapi.prepare_schedule = prepare_schedule;
2562 coroapi.prepare_cede = prepare_cede;
2563 coroapi.prepare_cede_notself = prepare_cede_notself;
2564
2565 {
2566 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2567
2568 if (!svp) croak ("Time::HiRes is required");
2569 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2570
2571 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2572 }
1544 2573
1545 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2574 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1546} 2575}
1547 2576
1548SV * 2577SV *
1549new (char *klass, ...) 2578new (char *klass, ...)
1550 CODE: 2579 CODE:
1551{ 2580{
1552 struct coro *coro; 2581 struct coro *coro;
2582 MAGIC *mg;
1553 HV *hv; 2583 HV *hv;
1554 int i; 2584 int i;
1555 2585
1556 Newz (0, coro, 1, struct coro); 2586 Newz (0, coro, 1, struct coro);
1557 coro->args = newAV (); 2587 coro->args = newAV ();
… …
1560 if (coro_first) coro_first->prev = coro; 2590 if (coro_first) coro_first->prev = coro;
1561 coro->next = coro_first; 2591 coro->next = coro_first;
1562 coro_first = coro; 2592 coro_first = coro;
1563 2593
1564 coro->hv = hv = newHV (); 2594 coro->hv = hv = newHV ();
1565 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2595 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2596 mg->mg_flags |= MGf_DUP;
1566 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2597 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1567 2598
1568 av_extend (coro->args, items - 1); 2599 av_extend (coro->args, items - 1);
1569 for (i = 1; i < items; i++) 2600 for (i = 1; i < items; i++)
1570 av_push (coro->args, newSVsv (ST (i))); 2601 av_push (coro->args, newSVsv (ST (i)));
1571} 2602}
1572 OUTPUT: 2603 OUTPUT:
1573 RETVAL 2604 RETVAL
1574 2605
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 2606void
1579_set_stacklevel (...) 2607transfer (...)
1580 ALIAS: 2608 PROTOTYPE: $$
1581 Coro::State::transfer = 1 2609 CODE:
1582 Coro::schedule = 2 2610 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 2611
1678bool 2612bool
1679_destroy (SV *coro_sv) 2613_destroy (SV *coro_sv)
1680 CODE: 2614 CODE:
1681 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2615 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1682 OUTPUT: 2616 OUTPUT:
1683 RETVAL 2617 RETVAL
1684 2618
1685void 2619void
1686_exit (code) 2620_exit (int code)
1687 int code
1688 PROTOTYPE: $ 2621 PROTOTYPE: $
1689 CODE: 2622 CODE:
1690 _exit (code); 2623 _exit (code);
1691 2624
1692int 2625int
1693cctx_stacksize (int new_stacksize = 0) 2626cctx_stacksize (int new_stacksize = 0)
2627 PROTOTYPE: ;$
1694 CODE: 2628 CODE:
1695 RETVAL = coro_stacksize; 2629 RETVAL = cctx_stacksize;
1696 if (new_stacksize) 2630 if (new_stacksize)
2631 {
1697 coro_stacksize = new_stacksize; 2632 cctx_stacksize = new_stacksize;
2633 ++cctx_gen;
2634 }
1698 OUTPUT: 2635 OUTPUT:
1699 RETVAL 2636 RETVAL
1700 2637
1701int 2638int
2639cctx_max_idle (int max_idle = 0)
2640 PROTOTYPE: ;$
2641 CODE:
2642 RETVAL = cctx_max_idle;
2643 if (max_idle > 1)
2644 cctx_max_idle = max_idle;
2645 OUTPUT:
2646 RETVAL
2647
2648int
1702cctx_count () 2649cctx_count ()
2650 PROTOTYPE:
1703 CODE: 2651 CODE:
1704 RETVAL = cctx_count; 2652 RETVAL = cctx_count;
1705 OUTPUT: 2653 OUTPUT:
1706 RETVAL 2654 RETVAL
1707 2655
1708int 2656int
1709cctx_idle () 2657cctx_idle ()
2658 PROTOTYPE:
1710 CODE: 2659 CODE:
1711 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2]; 2660 RETVAL = cctx_idle;
1712 OUTPUT: 2661 OUTPUT:
1713 RETVAL 2662 RETVAL
1714 2663
1715void 2664void
1716list () 2665list ()
2666 PROTOTYPE:
1717 PPCODE: 2667 PPCODE:
1718{ 2668{
1719 struct coro *coro; 2669 struct coro *coro;
1720 for (coro = coro_first; coro; coro = coro->next) 2670 for (coro = coro_first; coro; coro = coro->next)
1721 if (coro->hv) 2671 if (coro->hv)
… …
1726call (Coro::State coro, SV *coderef) 2676call (Coro::State coro, SV *coderef)
1727 ALIAS: 2677 ALIAS:
1728 eval = 1 2678 eval = 1
1729 CODE: 2679 CODE:
1730{ 2680{
1731 if (coro->mainstack) 2681 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1732 { 2682 {
1733 struct coro temp; 2683 struct coro temp;
1734 2684
1735 if (!(coro->flags & CF_RUNNING)) 2685 if (!(coro->flags & CF_RUNNING))
1736 { 2686 {
2687 PUTBACK;
1737 save_perl (aTHX_ &temp); 2688 save_perl (aTHX_ &temp);
1738 load_perl (aTHX_ coro); 2689 load_perl (aTHX_ coro);
1739 } 2690 }
1740 2691
1741 { 2692 {
… …
1750 eval_sv (coderef, 0); 2701 eval_sv (coderef, 0);
1751 else 2702 else
1752 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2703 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1753 2704
1754 POPSTACK; 2705 POPSTACK;
2706 SPAGAIN;
1755 FREETMPS; 2707 FREETMPS;
1756 LEAVE; 2708 LEAVE;
2709 PUTBACK;
1757 } 2710 }
1758 2711
1759 if (!(coro->flags & CF_RUNNING)) 2712 if (!(coro->flags & CF_RUNNING))
1760 { 2713 {
1761 save_perl (aTHX_ coro); 2714 save_perl (aTHX_ coro);
1762 load_perl (aTHX_ &temp); 2715 load_perl (aTHX_ &temp);
2716 SPAGAIN;
1763 } 2717 }
1764 } 2718 }
1765} 2719}
1766 2720
1767SV * 2721SV *
… …
1776 RETVAL = boolSV (coro->flags & ix); 2730 RETVAL = boolSV (coro->flags & ix);
1777 OUTPUT: 2731 OUTPUT:
1778 RETVAL 2732 RETVAL
1779 2733
1780void 2734void
2735throw (Coro::State self, SV *throw = &PL_sv_undef)
2736 PROTOTYPE: $;$
2737 CODE:
2738{
2739 struct coro *current = SvSTATE_current;
2740 SV **throwp = self == current ? &CORO_THROW : &self->except;
2741 SvREFCNT_dec (*throwp);
2742 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2743}
2744
2745void
1781api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2746api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2747 PROTOTYPE: $;$
2748 C_ARGS: aTHX_ coro, flags
1782 2749
1783SV * 2750SV *
1784has_stack (Coro::State coro) 2751has_cctx (Coro::State coro)
1785 PROTOTYPE: $ 2752 PROTOTYPE: $
1786 CODE: 2753 CODE:
1787 RETVAL = boolSV (!!coro->cctx); 2754 RETVAL = boolSV (!!coro->cctx);
1788 OUTPUT: 2755 OUTPUT:
1789 RETVAL 2756 RETVAL
… …
1794 CODE: 2761 CODE:
1795 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2762 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796 OUTPUT: 2763 OUTPUT:
1797 RETVAL 2764 RETVAL
1798 2765
1799IV 2766UV
1800rss (Coro::State coro) 2767rss (Coro::State coro)
1801 PROTOTYPE: $ 2768 PROTOTYPE: $
1802 ALIAS: 2769 ALIAS:
1803 usecount = 1 2770 usecount = 1
1804 CODE: 2771 CODE:
… …
1808 case 1: RETVAL = coro->usecount; break; 2775 case 1: RETVAL = coro->usecount; break;
1809 } 2776 }
1810 OUTPUT: 2777 OUTPUT:
1811 RETVAL 2778 RETVAL
1812 2779
2780void
2781force_cctx ()
2782 PROTOTYPE:
2783 CODE:
2784 SvSTATE_current->cctx->idle_sp = 0;
2785
2786void
2787swap_defsv (Coro::State self)
2788 PROTOTYPE: $
2789 ALIAS:
2790 swap_defav = 1
2791 CODE:
2792 if (!self->slot)
2793 croak ("cannot swap state with coroutine that has no saved state,");
2794 else
2795 {
2796 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2797 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2798
2799 SV *tmp = *src; *src = *dst; *dst = tmp;
2800 }
2801
1813 2802
1814MODULE = Coro::State PACKAGE = Coro 2803MODULE = Coro::State PACKAGE = Coro
1815 2804
1816BOOT: 2805BOOT:
1817{ 2806{
1818 int i; 2807 int i;
1819 2808
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); 2809 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2810 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2811 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1823 2812
1824 coro_current = coro_get_sv ("Coro::current", FALSE); 2813 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1825 SvREADONLY_on (coro_current); 2814 SvREADONLY_on (coro_current);
1826 2815
1827 coro_stash = gv_stashpv ("Coro", TRUE); 2816 coro_stash = gv_stashpv ("Coro", TRUE);
1828 2817
1829 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2818 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1835 2824
1836 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2825 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1837 coro_ready[i] = newAV (); 2826 coro_ready[i] = newAV ();
1838 2827
1839 { 2828 {
1840 SV *sv = perl_get_sv ("Coro::API", TRUE); 2829 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1841 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1842 2830
1843 coroapi.schedule = api_schedule; 2831 coroapi.schedule = api_schedule;
1844 coroapi.cede = api_cede; 2832 coroapi.cede = api_cede;
1845 coroapi.cede_notself = api_cede_notself; 2833 coroapi.cede_notself = api_cede_notself;
1846 coroapi.ready = api_ready; 2834 coroapi.ready = api_ready;
1847 coroapi.is_ready = api_is_ready; 2835 coroapi.is_ready = api_is_ready;
1848 coroapi.nready = &coro_nready; 2836 coroapi.nready = coro_nready;
1849 coroapi.current = coro_current; 2837 coroapi.current = coro_current;
1850 2838
1851 GCoroAPI = &coroapi; 2839 /*GCoroAPI = &coroapi;*/
1852 sv_setiv (sv, (IV)&coroapi); 2840 sv_setiv (sv, (IV)&coroapi);
1853 SvREADONLY_on (sv); 2841 SvREADONLY_on (sv);
1854 } 2842 }
1855} 2843}
2844
2845void
2846schedule (...)
2847 CODE:
2848 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2849
2850void
2851cede (...)
2852 CODE:
2853 CORO_EXECUTE_SLF_XS (slf_init_cede);
2854
2855void
2856cede_notself (...)
2857 CODE:
2858 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1856 2859
1857void 2860void
1858_set_current (SV *current) 2861_set_current (SV *current)
1859 PROTOTYPE: $ 2862 PROTOTYPE: $
1860 CODE: 2863 CODE:
1861 SvREFCNT_dec (SvRV (coro_current)); 2864 SvREFCNT_dec (SvRV (coro_current));
1862 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2865 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2866
2867void
2868_set_readyhook (SV *hook)
2869 PROTOTYPE: $
2870 CODE:
2871 SvREFCNT_dec (coro_readyhook);
2872 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1863 2873
1864int 2874int
1865prio (Coro::State coro, int newprio = 0) 2875prio (Coro::State coro, int newprio = 0)
2876 PROTOTYPE: $;$
1866 ALIAS: 2877 ALIAS:
1867 nice = 1 2878 nice = 1
1868 CODE: 2879 CODE:
1869{ 2880{
1870 RETVAL = coro->prio; 2881 RETVAL = coro->prio;
… …
1885 2896
1886SV * 2897SV *
1887ready (SV *self) 2898ready (SV *self)
1888 PROTOTYPE: $ 2899 PROTOTYPE: $
1889 CODE: 2900 CODE:
1890 RETVAL = boolSV (api_ready (self)); 2901 RETVAL = boolSV (api_ready (aTHX_ self));
1891 OUTPUT: 2902 OUTPUT:
1892 RETVAL 2903 RETVAL
1893 2904
1894int 2905int
1895nready (...) 2906nready (...)
… …
1897 CODE: 2908 CODE:
1898 RETVAL = coro_nready; 2909 RETVAL = coro_nready;
1899 OUTPUT: 2910 OUTPUT:
1900 RETVAL 2911 RETVAL
1901 2912
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 2913# for async_pool speedup
1910void 2914void
1911_pool_1 (SV *cb) 2915_pool_1 (SV *cb)
1912 CODE: 2916 CODE:
1913{ 2917{
1914 struct coro *coro = SvSTATE (coro_current);
1915 HV *hv = (HV *)SvRV (coro_current); 2918 HV *hv = (HV *)SvRV (coro_current);
2919 struct coro *coro = SvSTATE_hv ((SV *)hv);
1916 AV *defav = GvAV (PL_defgv); 2920 AV *defav = GvAV (PL_defgv);
1917 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2921 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1918 AV *invoke_av; 2922 AV *invoke_av;
1919 int i, len; 2923 int i, len;
1920 2924
1921 if (!invoke) 2925 if (!invoke)
2926 {
2927 SV *old = PL_diehook;
2928 PL_diehook = 0;
2929 SvREFCNT_dec (old);
1922 croak ("\3async_pool terminate\2\n"); 2930 croak ("\3async_pool terminate\2\n");
2931 }
1923 2932
1924 SvREFCNT_dec (coro->saved_deffh); 2933 SvREFCNT_dec (coro->saved_deffh);
1925 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2934 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1926 2935
1927 hv_store (hv, "desc", sizeof ("desc") - 1, 2936 hv_store (hv, "desc", sizeof ("desc") - 1,
1928 newSVpvn (strpair ("[async_pool]")), 0); 2937 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1929 2938
1930 invoke_av = (AV *)SvRV (invoke); 2939 invoke_av = (AV *)SvRV (invoke);
1931 len = av_len (invoke_av); 2940 len = av_len (invoke_av);
1932 2941
1933 sv_setsv (cb, AvARRAY (invoke_av)[0]); 2942 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1934 2943
1935 if (len > 0) 2944 if (len > 0)
1936 { 2945 {
1937 av_fill (defav, len - 1); 2946 av_fill (defav, len - 1);
1938 for (i = 0; i < len; ++i) 2947 for (i = 0; i < len; ++i)
1939 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2948 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1940 } 2949 }
1941
1942 SvREFCNT_dec (invoke);
1943} 2950}
1944 2951
1945void 2952void
1946_pool_2 (SV *cb) 2953_pool_2 (SV *cb)
1947 CODE: 2954 CODE:
1948{ 2955{
1949 struct coro *coro = SvSTATE (coro_current); 2956 HV *hv = (HV *)SvRV (coro_current);
2957 struct coro *coro = SvSTATE_hv ((SV *)hv);
1950 2958
1951 sv_setsv (cb, &PL_sv_undef); 2959 sv_setsv (cb, &PL_sv_undef);
1952 2960
1953 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2961 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1954 coro->saved_deffh = 0; 2962 coro->saved_deffh = 0;
1955 2963
1956 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2964 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1957 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2965 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2966 {
2967 SV *old = PL_diehook;
2968 PL_diehook = 0;
2969 SvREFCNT_dec (old);
1958 croak ("\3async_pool terminate\2\n"); 2970 croak ("\3async_pool terminate\2\n");
2971 }
1959 2972
1960 av_clear (GvAV (PL_defgv)); 2973 av_clear (GvAV (PL_defgv));
1961 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 2974 hv_store (hv, "desc", sizeof ("desc") - 1,
1962 newSVpvn (strpair ("[async_pool idle]")), 0); 2975 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1963 2976
1964 coro->prio = 0; 2977 coro->prio = 0;
1965 2978
1966 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2979 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1967 api_trace (coro_current, 0); 2980 api_trace (aTHX_ coro_current, 0);
1968 2981
1969 av_push (av_async_pool, newSVsv (coro_current)); 2982 av_push (av_async_pool, newSVsv (coro_current));
1970} 2983}
1971 2984
1972
1973MODULE = Coro::State PACKAGE = Coro::AIO
1974
1975SV * 2985SV *
1976_get_state () 2986rouse_cb ()
2987 PROTOTYPE:
1977 CODE: 2988 CODE:
1978{ 2989 RETVAL = coro_new_rouse_cb (aTHX);
1979 struct io_state *data;
1980
1981 RETVAL = newSV (sizeof (struct io_state));
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: 2990 OUTPUT:
1992 RETVAL 2991 RETVAL
1993 2992
1994void 2993void
1995_set_state (char *data_) 2994rouse_wait (SV *cb = 0)
1996 PROTOTYPE: $ 2995 PROTOTYPE: ;$
2996 PPCODE:
2997 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2998
2999
3000MODULE = Coro::State PACKAGE = PerlIO::cede
3001
3002BOOT:
3003 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3004
3005
3006MODULE = Coro::State PACKAGE = Coro::Semaphore
3007
3008SV *
3009new (SV *klass, SV *count = 0)
1997 CODE: 3010 CODE:
1998{ 3011 RETVAL = sv_bless (
1999 struct io_state *data = (void *)data_; 3012 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3013 GvSTASH (CvGV (cv))
3014 );
3015 OUTPUT:
3016 RETVAL
2000 3017
2001 errno = data->errorno; 3018# helper for Coro::Channel
2002 PL_laststype = data->laststype; 3019SV *
2003 PL_laststatval = data->laststatval; 3020_alloc (int count)
2004 PL_statcache = data->statcache; 3021 CODE:
2005} 3022 RETVAL = coro_waitarray_new (aTHX_ count);
3023 OUTPUT:
3024 RETVAL
2006 3025
3026SV *
3027count (SV *self)
3028 CODE:
3029 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3030 OUTPUT:
3031 RETVAL
3032
3033void
3034up (SV *self, int adjust = 1)
3035 ALIAS:
3036 adjust = 1
3037 CODE:
3038 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3039
3040void
3041down (SV *self)
3042 CODE:
3043 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3044
3045void
3046wait (SV *self)
3047 CODE:
3048 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3049
3050void
3051try (SV *self)
3052 PPCODE:
3053{
3054 AV *av = (AV *)SvRV (self);
3055 SV *count_sv = AvARRAY (av)[0];
3056 IV count = SvIVX (count_sv);
3057
3058 if (count > 0)
3059 {
3060 --count;
3061 SvIVX (count_sv) = count;
3062 XSRETURN_YES;
3063 }
3064 else
3065 XSRETURN_NO;
3066}
3067
3068void
3069waiters (SV *self)
3070 PPCODE:
3071{
3072 AV *av = (AV *)SvRV (self);
3073 int wcount = AvFILLp (av) + 1 - 1;
3074
3075 if (GIMME_V == G_SCALAR)
3076 XPUSHs (sv_2mortal (newSViv (wcount)));
3077 else
3078 {
3079 int i;
3080 EXTEND (SP, wcount);
3081 for (i = 1; i <= wcount; ++i)
3082 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3083 }
3084}
3085
3086MODULE = Coro::State PACKAGE = Coro::Signal
3087
3088SV *
3089new (SV *klass)
3090 CODE:
3091 RETVAL = sv_bless (
3092 coro_waitarray_new (aTHX_ 0),
3093 GvSTASH (CvGV (cv))
3094 );
3095 OUTPUT:
3096 RETVAL
3097
3098void
3099wait (SV *self)
3100 CODE:
3101 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3102
3103void
3104broadcast (SV *self)
3105 CODE:
3106{
3107 AV *av = (AV *)SvRV (self);
3108 coro_signal_wake (aTHX_ av, AvFILLp (av));
3109}
3110
3111void
3112send (SV *self)
3113 CODE:
3114{
3115 AV *av = (AV *)SvRV (self);
3116
3117 if (AvFILLp (av))
3118 coro_signal_wake (aTHX_ av, 1);
3119 else
3120 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3121}
3122
3123IV
3124awaited (SV *self)
3125 CODE:
3126 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3127 OUTPUT:
3128 RETVAL
3129
3130
3131MODULE = Coro::State PACKAGE = Coro::AnyEvent
3132
3133BOOT:
3134 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3135
3136void
3137_schedule (...)
3138 CODE:
3139{
3140 static int incede;
3141
3142 api_cede_notself (aTHX);
3143
3144 ++incede;
3145 while (coro_nready >= incede && api_cede (aTHX))
3146 ;
3147
3148 sv_setsv (sv_activity, &PL_sv_undef);
3149 if (coro_nready >= incede)
3150 {
3151 PUSHMARK (SP);
3152 PUTBACK;
3153 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3154 }
3155
3156 --incede;
3157}
3158
3159
3160MODULE = Coro::State PACKAGE = Coro::AIO
3161
3162void
3163_register (char *target, char *proto, SV *req)
3164 CODE:
3165{
3166 HV *st;
3167 GV *gvp;
3168 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3169 /* newXSproto doesn't return the CV on 5.8 */
3170 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3171 sv_setpv ((SV *)slf_cv, proto);
3172 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3173}
3174

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