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Comparing Coro/Coro/State.xs (file contents):
Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC vs.
Revision 1.338 by root, Sun Dec 7 15:33:21 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
75/* 5.8.7 */ 110/* 5.8.7 */
76#ifndef SvRV_set 111#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 113#endif
79 114
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 126#endif
92 127
93/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
94 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
95#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
96#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
97 137
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
99 139
100#if __GNUC__ >= 3 140#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
103#else 144#else
104# define attribute(x) 145# define attribute(x)
105# define BARRIER 146# define expect(expr,value) (expr)
147# define INLINE static
106#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
107 152
108#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
109 154
110#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
111 157
112#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 159# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 161# endif
162#endif
120 163
121/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
122struct io_state
123{
124 int errorno;
125 I32 laststype;
126 int laststatval;
127 Stat_t statcache;
128};
129 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 174static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
182static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
136 187
137/* async_pool helper stuff */ 188/* async_pool helper stuff */
138static SV *sv_pool_rss; 189static SV *sv_pool_rss;
139static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
140static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
141 199
142static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
144 202
145enum { 203enum {
… …
150 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
151 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
152}; 210};
153 211
154/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
155typedef struct coro_cctx { 213typedef struct coro_cctx
214{
156 struct coro_cctx *next; 215 struct coro_cctx *next;
157 216
158 /* the stack */ 217 /* the stack */
159 void *sptr; 218 void *sptr;
160 size_t ssize; 219 size_t ssize;
… …
163 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
164 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
165 JMPENV *top_env; 224 JMPENV *top_env;
166 coro_context cctx; 225 coro_context cctx;
167 226
227 U32 gen;
168#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
169 int valgrind_id; 229 int valgrind_id;
170#endif 230#endif
171 unsigned char flags; 231 unsigned char flags;
172} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
173 237
174enum { 238enum {
175 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
176 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
177 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
178 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179}; 243};
180 244
181/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
182struct coro { 246typedef struct
183 /* the c coroutine allocated to this perl coroutine, if any */ 247{
184 coro_cctx *cctx; 248 SV *defsv;
185 249 AV *defav;
186 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
187 AV *args; 251 SV *irsgv;
188 int refcnt; 252 HV *hinthv;
189 int save; /* CORO_SAVE flags */
190 int flags; /* CF_ flags */
191
192 /* optionally saved, might be zero */
193 AV *defav; /* @_ */
194 SV *defsv; /* $_ */
195 SV *errsv; /* $@ */
196 GV *deffh; /* default filehandle */
197 SV *irssv; /* $/ */
198 SV *irssv_sv; /* real $/ cache */
199
200#define VAR(name,type) type name; 253#define VAR(name,type) type name;
201# include "state.h" 254# include "state.h"
202#undef VAR 255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
260/* this is a structure representing a perl-level coroutine */
261struct coro {
262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx;
264
265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */
269
270 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
203 276
204 /* statistics */ 277 /* statistics */
205 int usecount; /* number of switches to this coro */ 278 int usecount; /* number of transfers to this coro */
206 279
207 /* coro process data */ 280 /* coro process data */
208 int prio; 281 int prio;
282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
284
285 /* async_pool */
286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
209 289
210 /* linked list */ 290 /* linked list */
211 struct coro *next, *prev; 291 struct coro *next, *prev;
212 HV *hv; /* the perl hash associated with this coro, if any */
213}; 292};
214 293
215typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
216typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
217 301
218/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
219 303
220#define PRIO_MAX 3 304#define PRIO_MAX 3
221#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
224#define PRIO_IDLE -3 308#define PRIO_IDLE -3
225#define PRIO_MIN -4 309#define PRIO_MIN -4
226 310
227/* for Coro.pm */ 311/* for Coro.pm */
228static SV *coro_current; 312static SV *coro_current;
313static SV *coro_readyhook;
229static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
230static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
231static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
232 318
233/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
234 320
321static SV *
322coro_get_sv (pTHX_ const char *name, int create)
323{
324#if PERL_VERSION_ATLEAST (5,10,0)
325 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
326 get_sv (name, create);
327#endif
328 return get_sv (name, create);
329}
330
235static AV * 331static AV *
332coro_get_av (pTHX_ const char *name, int create)
333{
334#if PERL_VERSION_ATLEAST (5,10,0)
335 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
336 get_av (name, create);
337#endif
338 return get_av (name, create);
339}
340
341static HV *
342coro_get_hv (pTHX_ const char *name, int create)
343{
344#if PERL_VERSION_ATLEAST (5,10,0)
345 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
346 get_hv (name, create);
347#endif
348 return get_hv (name, create);
349}
350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360/*****************************************************************************/
361/* magic glue */
362
363#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext
365
366#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type))
370
371#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \
374 : 0)
375
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378
379INLINE struct coro *
380SvSTATE_ (pTHX_ SV *coro)
381{
382 HV *stash;
383 MAGIC *mg;
384
385 if (SvROK (coro))
386 coro = SvRV (coro);
387
388 if (expect_false (SvTYPE (coro) != SVt_PVHV))
389 croak ("Coro::State object required");
390
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr;
401}
402
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404
405/* faster than SvSTATE, but expects a coroutine hv */
406#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408
409/*****************************************************************************/
410/* padlist management and caching */
411
412static AV *
236coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
237{ 414{
238 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
239 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
240 417
241 newpadlist = newAV (); 418 newpadlist = newAV ();
242 AvREAL_off (newpadlist); 419 AvREAL_off (newpadlist);
243#if PERL_VERSION_ATLEAST (5,9,0) 420#if PERL_VERSION_ATLEAST (5,10,0)
244 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 421 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
245#else 422#else
246 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
247#endif 424#endif
248 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
249 --AvFILLp (padlist); 426 --AvFILLp (padlist);
250 427
251 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
252 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
253 430
254 return newpadlist; 431 return newpadlist;
255} 432}
256 433
257static void 434static void
258free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
259{ 436{
260 /* may be during global destruction */ 437 /* may be during global destruction */
261 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
262 { 439 {
263 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
264 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
265 { 443 {
266 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
267 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
268 { 446 I32 j = AvFILLp (av);
269 SV *sv; 447
270 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
271 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
272
273 SvREFCNT_dec (*svp);
274 }
275 } 453 }
276 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
277 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
278 } 459 }
279} 460}
280 461
281static int 462static int
… …
286 467
287 /* casting is fun. */ 468 /* casting is fun. */
288 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 469 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
289 free_padlist (aTHX_ padlist); 470 free_padlist (aTHX_ padlist);
290 471
291 SvREFCNT_dec (av); 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
292 473
293 return 0; 474 return 0;
294} 475}
295 476
296#define PERL_MAGIC_coro PERL_MAGIC_ext 477static MGVTBL coro_cv_vtbl = {
297 478 0, 0, 0, 0,
298static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 479 coro_cv_free
299 480};
300#define CORO_MAGIC(cv) \
301 SvMAGIC (cv) \
302 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
303 ? SvMAGIC (cv) \
304 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
305 : 0
306
307static struct coro *
308SvSTATE_ (pTHX_ SV *coro)
309{
310 HV *stash;
311 MAGIC *mg;
312
313 if (SvROK (coro))
314 coro = SvRV (coro);
315
316 if (SvTYPE (coro) != SVt_PVHV)
317 croak ("Coro::State object required");
318
319 stash = SvSTASH (coro);
320 if (stash != coro_stash && stash != coro_state_stash)
321 {
322 /* very slow, but rare, check */
323 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324 croak ("Coro::State object required");
325 }
326
327 mg = CORO_MAGIC (coro);
328 return (struct coro *)mg->mg_ptr;
329}
330
331#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332 481
333/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
334static void 483static void
335get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
336{ 485{
337 MAGIC *mg = CORO_MAGIC (cv); 486 MAGIC *mg = CORO_MAGIC_cv (cv);
338 AV *av; 487 AV *av;
339 488
340 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 489 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 490 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342 else 491 else
343 { 492 {
344#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
345 /* this is probably cleaner, but also slower? */ 494 /* this is probably cleaner? but also slower! */
495 /* in practise, it seems to be less stable */
346 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
347 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
348 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
349 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
350#else 500#else
351 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
352#endif 502#endif
353 } 503 }
354} 504}
355 505
356static void 506static void
357put_padlist (pTHX_ CV *cv) 507put_padlist (pTHX_ CV *cv)
358{ 508{
359 MAGIC *mg = CORO_MAGIC (cv); 509 MAGIC *mg = CORO_MAGIC_cv (cv);
360 AV *av; 510 AV *av;
361 511
362 if (!mg) 512 if (expect_false (!mg))
363 { 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
364 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
365 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
366 mg->mg_virtual = &vtbl_coro;
367 mg->mg_obj = (SV *)newAV ();
368 }
369 514
370 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
371 516
372 if (AvFILLp (av) >= AvMAX (av)) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
373 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
374 519
375 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376} 521}
377 522
378/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
379 524
380#define SB do {
381#define SE } while (0)
382
383#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
384
385static void 525static void
386load_perl (pTHX_ Coro__State c) 526load_perl (pTHX_ Coro__State c)
387{ 527{
528 perl_slots *slot = c->slot;
529 c->slot = 0;
530
531 PL_mainstack = c->mainstack;
532
533 GvSV (PL_defgv) = slot->defsv;
534 GvAV (PL_defgv) = slot->defav;
535 GvSV (PL_errgv) = slot->errsv;
536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
538
388#define VAR(name,type) PL_ ## name = c->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
389# include "state.h" 540 # include "state.h"
390#undef VAR 541 #undef VAR
391
392 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
393 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
394 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
395 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
396
397 if (c->irssv)
398 {
399 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
400 {
401 SvREFCNT_dec (c->irssv);
402 c->irssv = 0;
403 }
404 else
405 {
406 REPLACE_SV (PL_rs, c->irssv);
407 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
408 sv_setsv (c->irssv_sv, PL_rs);
409 }
410 }
411 542
412 { 543 {
413 dSP; 544 dSP;
545
414 CV *cv; 546 CV *cv;
415 547
416 /* now do the ugly restore mess */ 548 /* now do the ugly restore mess */
417 while ((cv = (CV *)POPs)) 549 while (expect_true (cv = (CV *)POPs))
418 { 550 {
419 put_padlist (aTHX_ cv); /* mark this padlist as available */ 551 put_padlist (aTHX_ cv); /* mark this padlist as available */
420 CvDEPTH (cv) = PTR2IV (POPs); 552 CvDEPTH (cv) = PTR2IV (POPs);
421 CvPADLIST (cv) = (AV *)POPs; 553 CvPADLIST (cv) = (AV *)POPs;
422 } 554 }
423 555
424 PUTBACK; 556 PUTBACK;
425 } 557 }
558
559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
426} 561}
427 562
428static void 563static void
429save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
430{ 565{
566 c->except = CORO_THROW;
567 c->slf_frame = slf_frame;
568
431 { 569 {
432 dSP; 570 dSP;
433 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
434 PERL_CONTEXT *ccstk = cxstack; 572 PERL_CONTEXT *ccstk = cxstack;
435 PERL_SI *top_si = PL_curstackinfo; 573 PERL_SI *top_si = PL_curstackinfo;
… …
441 579
442 XPUSHs (Nullsv); 580 XPUSHs (Nullsv);
443 /* this loop was inspired by pp_caller */ 581 /* this loop was inspired by pp_caller */
444 for (;;) 582 for (;;)
445 { 583 {
446 while (cxix >= 0) 584 while (expect_true (cxix >= 0))
447 { 585 {
448 PERL_CONTEXT *cx = &ccstk[cxix--]; 586 PERL_CONTEXT *cx = &ccstk[cxix--];
449 587
450 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 588 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
451 { 589 {
452 CV *cv = cx->blk_sub.cv; 590 CV *cv = cx->blk_sub.cv;
453 591
454 if (CvDEPTH (cv)) 592 if (expect_true (CvDEPTH (cv)))
455 { 593 {
456 EXTEND (SP, 3); 594 EXTEND (SP, 3);
457 PUSHs ((SV *)CvPADLIST (cv)); 595 PUSHs ((SV *)CvPADLIST (cv));
458 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 596 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
459 PUSHs ((SV *)cv); 597 PUSHs ((SV *)cv);
460 598
461 CvDEPTH (cv) = 0; 599 CvDEPTH (cv) = 0;
462 get_padlist (aTHX_ cv); 600 get_padlist (aTHX_ cv);
463 } 601 }
464 } 602 }
465 } 603 }
466 604
467 if (top_si->si_type == PERLSI_MAIN) 605 if (expect_true (top_si->si_type == PERLSI_MAIN))
468 break; 606 break;
469 607
470 top_si = top_si->si_prev; 608 top_si = top_si->si_prev;
471 ccstk = top_si->si_cxstack; 609 ccstk = top_si->si_cxstack;
472 cxix = top_si->si_cxix; 610 cxix = top_si->si_cxix;
473 } 611 }
474 612
475 PUTBACK; 613 PUTBACK;
476 } 614 }
477 615
478 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 616 /* allocate some space on the context stack for our purposes */
479 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 617 /* we manually unroll here, as usually 2 slots is enough */
480 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 618 if (SLOT_COUNT >= 1) CXINC;
481 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 619 if (SLOT_COUNT >= 2) CXINC;
482 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 620 if (SLOT_COUNT >= 3) CXINC;
621 {
622 int i;
623 for (i = 3; i < SLOT_COUNT; ++i)
624 CXINC;
625 }
626 cxstack_ix -= SLOT_COUNT; /* undo allocation */
483 627
628 c->mainstack = PL_mainstack;
629
630 {
631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
632
633 slot->defav = GvAV (PL_defgv);
634 slot->defsv = DEFSV;
635 slot->errsv = ERRSV;
636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
638
484#define VAR(name,type)c->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
485# include "state.h" 640 # include "state.h"
486#undef VAR 641 #undef VAR
642 }
487} 643}
488 644
489/* 645/*
490 * allocate various perl stacks. This is an exact copy 646 * allocate various perl stacks. This is almost an exact copy
491 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
492 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
493 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
494 */ 650 */
495#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
496# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
497#else 653#else
498static void 654static void
499coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
500{ 656{
501 PL_curstackinfo = new_stackinfo(64, 6); 657 PL_curstackinfo = new_stackinfo(32, 8);
502 PL_curstackinfo->si_type = PERLSI_MAIN; 658 PL_curstackinfo->si_type = PERLSI_MAIN;
503 PL_curstack = PL_curstackinfo->si_stack; 659 PL_curstack = PL_curstackinfo->si_stack;
504 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 660 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505 661
506 PL_stack_base = AvARRAY(PL_curstack); 662 PL_stack_base = AvARRAY(PL_curstack);
507 PL_stack_sp = PL_stack_base; 663 PL_stack_sp = PL_stack_base;
508 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 664 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509 665
510 New(50,PL_tmps_stack,64,SV*); 666 New(50,PL_tmps_stack,32,SV*);
511 PL_tmps_floor = -1; 667 PL_tmps_floor = -1;
512 PL_tmps_ix = -1; 668 PL_tmps_ix = -1;
513 PL_tmps_max = 64; 669 PL_tmps_max = 32;
514 670
515 New(54,PL_markstack,16,I32); 671 New(54,PL_markstack,16,I32);
516 PL_markstack_ptr = PL_markstack; 672 PL_markstack_ptr = PL_markstack;
517 PL_markstack_max = PL_markstack + 16; 673 PL_markstack_max = PL_markstack + 16;
518 674
519#ifdef SET_MARK_OFFSET 675#ifdef SET_MARK_OFFSET
520 SET_MARK_OFFSET; 676 SET_MARK_OFFSET;
521#endif 677#endif
522 678
523 New(54,PL_scopestack,16,I32); 679 New(54,PL_scopestack,8,I32);
524 PL_scopestack_ix = 0; 680 PL_scopestack_ix = 0;
525 PL_scopestack_max = 16; 681 PL_scopestack_max = 8;
526 682
527 New(54,PL_savestack,64,ANY); 683 New(54,PL_savestack,24,ANY);
528 PL_savestack_ix = 0; 684 PL_savestack_ix = 0;
529 PL_savestack_max = 64; 685 PL_savestack_max = 24;
530 686
531#if !PERL_VERSION_ATLEAST (5,9,0) 687#if !PERL_VERSION_ATLEAST (5,10,0)
532 New(54,PL_retstack,4,OP*); 688 New(54,PL_retstack,4,OP*);
533 PL_retstack_ix = 0; 689 PL_retstack_ix = 0;
534 PL_retstack_max = 4; 690 PL_retstack_max = 4;
535#endif 691#endif
536} 692}
… …
538 694
539/* 695/*
540 * destroy the stacks, the callchain etc... 696 * destroy the stacks, the callchain etc...
541 */ 697 */
542static void 698static void
543coro_destroy_stacks (pTHX) 699coro_destruct_stacks (pTHX)
544{ 700{
545 if (!IN_DESTRUCT)
546 {
547 /* restore all saved variables and stuff */
548 LEAVE_SCOPE (0);
549 assert (PL_tmps_floor == -1);
550
551 /* free all temporaries */
552 FREETMPS;
553 assert (PL_tmps_ix == -1);
554
555 /* unwind all extra stacks */
556 POPSTACK_TO (PL_mainstack);
557
558 /* unwind main stack */
559 dounwind (-1);
560 }
561
562 while (PL_curstackinfo->si_next) 701 while (PL_curstackinfo->si_next)
563 PL_curstackinfo = PL_curstackinfo->si_next; 702 PL_curstackinfo = PL_curstackinfo->si_next;
564 703
565 while (PL_curstackinfo) 704 while (PL_curstackinfo)
566 { 705 {
… …
576 715
577 Safefree (PL_tmps_stack); 716 Safefree (PL_tmps_stack);
578 Safefree (PL_markstack); 717 Safefree (PL_markstack);
579 Safefree (PL_scopestack); 718 Safefree (PL_scopestack);
580 Safefree (PL_savestack); 719 Safefree (PL_savestack);
581#if !PERL_VERSION_ATLEAST (5,9,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
582 Safefree (PL_retstack); 721 Safefree (PL_retstack);
583#endif 722#endif
584} 723}
724
725#define CORO_RSS \
726 rss += sizeof (SYM (curstackinfo)); \
727 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
728 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
729 rss += SYM (tmps_max) * sizeof (SV *); \
730 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
731 rss += SYM (scopestack_max) * sizeof (I32); \
732 rss += SYM (savestack_max) * sizeof (ANY);
585 733
586static size_t 734static size_t
587coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
588{ 736{
589 size_t rss = sizeof (coro); 737 size_t rss = sizeof (*coro);
590 738
591 if (coro->mainstack) 739 if (coro->mainstack)
592 { 740 {
593 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
594 { 742 {
595 #define VAR(name,type)coro->name = PL_ ## name; 743 #define SYM(sym) PL_ ## sym
596 # include "state.h" 744 CORO_RSS;
597 #undef VAR 745 #undef SYM
598 } 746 }
599 747 else
600 rss += sizeof (coro->curstackinfo); 748 {
601 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 749 #define SYM(sym) coro->slot->sym
602 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
603 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 751 #undef SYM
604 rss += coro->tmps_max * sizeof (SV *); 752 }
605 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
606 rss += coro->scopestack_max * sizeof (I32);
607 rss += coro->savestack_max * sizeof (ANY);
608
609#if !PERL_VERSION_ATLEAST (5,9,0)
610 rss += coro->retstack_max * sizeof (OP *);
611#endif
612 } 753 }
613 754
614 return rss; 755 return rss;
615} 756}
616 757
617/** coroutine stack handling ************************************************/ 758/** coroutine stack handling ************************************************/
618 759
760static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
761static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
762static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
763
764/* apparently < 5.8.8 */
765#ifndef MgPV_nolen_const
766#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
767 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
768 (const char*)(mg)->mg_ptr)
769#endif
770
771/*
772 * This overrides the default magic get method of %SIG elements.
773 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
774 * and instead of trying to save and restore the hash elements, we just provide
775 * readback here.
776 */
619static void 777static int
778coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
779{
780 const char *s = MgPV_nolen_const (mg);
781
782 if (*s == '_')
783 {
784 SV **svp = 0;
785
786 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
787 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
788
789 if (svp)
790 {
791 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
792 return 0;
793 }
794 }
795
796 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
797}
798
799static int
800coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
801{
802 const char *s = MgPV_nolen_const (mg);
803
804 if (*s == '_')
805 {
806 SV **svp = 0;
807
808 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
809 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
810
811 if (svp)
812 {
813 SV *old = *svp;
814 *svp = 0;
815 SvREFCNT_dec (old);
816 return 0;
817 }
818 }
819
820 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
821}
822
823static int
824coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
825{
826 const char *s = MgPV_nolen_const (mg);
827
828 if (*s == '_')
829 {
830 SV **svp = 0;
831
832 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
833 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
834
835 if (svp)
836 {
837 SV *old = *svp;
838 *svp = SvOK (sv) ? newSVsv (sv) : 0;
839 SvREFCNT_dec (old);
840 return 0;
841 }
842 }
843
844 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
845}
846
847static void
848prepare_nop (pTHX_ struct coro_transfer_args *ta)
849{
850 /* kind of mega-hacky, but works */
851 ta->next = ta->prev = (struct coro *)ta;
852}
853
854static int
855slf_check_nop (pTHX_ struct CoroSLF *frame)
856{
857 return 0;
858}
859
860static int
861slf_check_repeat (pTHX_ struct CoroSLF *frame)
862{
863 return 1;
864}
865
866static UNOP coro_setup_op;
867
868static void NOINLINE /* noinline to keep it out of the transfer fast path */
620setup_coro (pTHX_ struct coro *coro) 869coro_setup (pTHX_ struct coro *coro)
621{ 870{
622 /* 871 /*
623 * emulate part of the perl startup here. 872 * emulate part of the perl startup here.
624 */ 873 */
625 coro_init_stacks (aTHX); 874 coro_init_stacks (aTHX);
626 875
627 PL_runops = RUNOPS_DEFAULT; 876 PL_runops = RUNOPS_DEFAULT;
628 PL_curcop = &PL_compiling; 877 PL_curcop = &PL_compiling;
629 PL_in_eval = EVAL_NULL; 878 PL_in_eval = EVAL_NULL;
630 PL_comppad = 0; 879 PL_comppad = 0;
880 PL_comppad_name = 0;
881 PL_comppad_name_fill = 0;
882 PL_comppad_name_floor = 0;
631 PL_curpm = 0; 883 PL_curpm = 0;
884 PL_curpad = 0;
632 PL_localizing = 0; 885 PL_localizing = 0;
633 PL_dirty = 0; 886 PL_dirty = 0;
634 PL_restartop = 0; 887 PL_restartop = 0;
888#if PERL_VERSION_ATLEAST (5,10,0)
889 PL_parser = 0;
890#endif
891 PL_hints = 0;
892
893 /* recreate the die/warn hooks */
894 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
895 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
896
897 GvSV (PL_defgv) = newSV (0);
898 GvAV (PL_defgv) = coro->args; coro->args = 0;
899 GvSV (PL_errgv) = newSV (0);
900 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
901 GvHV (PL_hintgv) = 0;
902 PL_rs = newSVsv (GvSV (irsgv));
903 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
635 904
636 { 905 {
637 dSP; 906 dSP;
638 LOGOP myop; 907 UNOP myop;
639 908
640 SvREFCNT_dec (GvAV (PL_defgv));
641 GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643 Zero (&myop, 1, LOGOP); 909 Zero (&myop, 1, UNOP);
644 myop.op_next = Nullop; 910 myop.op_next = Nullop;
911 myop.op_type = OP_ENTERSUB;
645 myop.op_flags = OPf_WANT_VOID; 912 myop.op_flags = OPf_WANT_VOID;
646 913
647 PUSHMARK (SP); 914 PUSHMARK (SP);
648 XPUSHs (av_shift (GvAV (PL_defgv))); 915 PUSHs ((SV *)coro->startcv);
649 PUTBACK; 916 PUTBACK;
650 PL_op = (OP *)&myop; 917 PL_op = (OP *)&myop;
651 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 918 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652 SPAGAIN;
653 } 919 }
654 920
655 ENTER; /* necessary e.g. for dounwind */ 921 /* this newly created coroutine might be run on an existing cctx which most
656} 922 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
923 */
924 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
925 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
657 926
927 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
928 coro_setup_op.op_next = PL_op;
929 coro_setup_op.op_type = OP_ENTERSUB;
930 coro_setup_op.op_ppaddr = pp_slf;
931 /* no flags etc. required, as an init function won't be called */
932
933 PL_op = (OP *)&coro_setup_op;
934
935 /* copy throw, in case it was set before coro_setup */
936 CORO_THROW = coro->except;
937}
938
658static void 939static void
940coro_unwind_stacks (pTHX)
941{
942 if (!IN_DESTRUCT)
943 {
944 /* restore all saved variables and stuff */
945 LEAVE_SCOPE (0);
946 assert (PL_tmps_floor == -1);
947
948 /* free all temporaries */
949 FREETMPS;
950 assert (PL_tmps_ix == -1);
951
952 /* unwind all extra stacks */
953 POPSTACK_TO (PL_mainstack);
954
955 /* unwind main stack */
956 dounwind (-1);
957 }
958}
959
960static void
961coro_destruct_perl (pTHX_ struct coro *coro)
962{
963 coro_unwind_stacks (aTHX);
964
965 SvREFCNT_dec (GvSV (PL_defgv));
966 SvREFCNT_dec (GvAV (PL_defgv));
967 SvREFCNT_dec (GvSV (PL_errgv));
968 SvREFCNT_dec (PL_defoutgv);
969 SvREFCNT_dec (PL_rs);
970 SvREFCNT_dec (GvSV (irsgv));
971 SvREFCNT_dec (GvHV (PL_hintgv));
972
973 SvREFCNT_dec (PL_diehook);
974 SvREFCNT_dec (PL_warnhook);
975
976 SvREFCNT_dec (coro->saved_deffh);
977 SvREFCNT_dec (coro->rouse_cb);
978 SvREFCNT_dec (coro->invoke_cb);
979 SvREFCNT_dec (coro->invoke_av);
980
981 coro_destruct_stacks (aTHX);
982}
983
984INLINE void
659free_coro_mortal (pTHX) 985free_coro_mortal (pTHX)
660{ 986{
661 if (coro_mortal) 987 if (expect_true (coro_mortal))
662 { 988 {
663 SvREFCNT_dec (coro_mortal); 989 SvREFCNT_dec (coro_mortal);
664 coro_mortal = 0; 990 coro_mortal = 0;
665 } 991 }
666} 992}
… …
668static int 994static int
669runops_trace (pTHX) 995runops_trace (pTHX)
670{ 996{
671 COP *oldcop = 0; 997 COP *oldcop = 0;
672 int oldcxix = -2; 998 int oldcxix = -2;
673 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
674 coro_cctx *cctx = coro->cctx;
675 999
676 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1000 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
677 { 1001 {
678 PERL_ASYNC_CHECK (); 1002 PERL_ASYNC_CHECK ();
679 1003
680 if (cctx->flags & CC_TRACE_ALL) 1004 if (cctx_current->flags & CC_TRACE_ALL)
681 { 1005 {
682 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1006 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
683 { 1007 {
684 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1008 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
685 SV **bot, **top; 1009 SV **bot, **top;
686 AV *av = newAV (); /* return values */ 1010 AV *av = newAV (); /* return values */
687 SV **cb; 1011 SV **cb;
… …
695 bot = PL_stack_base + cx->blk_oldsp + 1; 1019 bot = PL_stack_base + cx->blk_oldsp + 1;
696 top = cx->blk_gimme == G_ARRAY ? SP + 1 1020 top = cx->blk_gimme == G_ARRAY ? SP + 1
697 : cx->blk_gimme == G_SCALAR ? bot + 1 1021 : cx->blk_gimme == G_SCALAR ? bot + 1
698 : bot; 1022 : bot;
699 1023
1024 av_extend (av, top - bot);
700 while (bot < top) 1025 while (bot < top)
701 av_push (av, SvREFCNT_inc (*bot++)); 1026 av_push (av, SvREFCNT_inc_NN (*bot++));
702 1027
703 PL_runops = RUNOPS_DEFAULT; 1028 PL_runops = RUNOPS_DEFAULT;
704 ENTER; 1029 ENTER;
705 SAVETMPS; 1030 SAVETMPS;
706 EXTEND (SP, 3); 1031 EXTEND (SP, 3);
… …
723 1048
724 if (PL_curcop != &PL_compiling) 1049 if (PL_curcop != &PL_compiling)
725 { 1050 {
726 SV **cb; 1051 SV **cb;
727 1052
728 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1053 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
729 { 1054 {
730 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1055 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
731 1056
732 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1057 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
733 { 1058 {
734 runops_proc_t old_runops = PL_runops;
735 dSP; 1059 dSP;
736 GV *gv = CvGV (cx->blk_sub.cv); 1060 GV *gv = CvGV (cx->blk_sub.cv);
737 SV *fullname = sv_2mortal (newSV (0)); 1061 SV *fullname = sv_2mortal (newSV (0));
738 1062
739 if (isGV (gv)) 1063 if (isGV (gv))
… …
744 SAVETMPS; 1068 SAVETMPS;
745 EXTEND (SP, 3); 1069 EXTEND (SP, 3);
746 PUSHMARK (SP); 1070 PUSHMARK (SP);
747 PUSHs (&PL_sv_yes); 1071 PUSHs (&PL_sv_yes);
748 PUSHs (fullname); 1072 PUSHs (fullname);
749 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1073 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
750 PUTBACK; 1074 PUTBACK;
751 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1075 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
752 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1076 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
753 SPAGAIN; 1077 SPAGAIN;
754 FREETMPS; 1078 FREETMPS;
… …
757 } 1081 }
758 1082
759 oldcxix = cxstack_ix; 1083 oldcxix = cxstack_ix;
760 } 1084 }
761 1085
762 if (cctx->flags & CC_TRACE_LINE) 1086 if (cctx_current->flags & CC_TRACE_LINE)
763 { 1087 {
764 dSP; 1088 dSP;
765 1089
766 PL_runops = RUNOPS_DEFAULT; 1090 PL_runops = RUNOPS_DEFAULT;
767 ENTER; 1091 ENTER;
… …
786 1110
787 TAINT_NOT; 1111 TAINT_NOT;
788 return 0; 1112 return 0;
789} 1113}
790 1114
791/* inject a fake call to Coro::State::_cctx_init into the execution */ 1115static struct CoroSLF cctx_ssl_frame;
792/* _cctx_init should be careful, as it could be called at almost any time */ 1116
793/* during execution of a perl program */ 1117static void
1118slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1119{
1120 ta->prev = 0;
1121}
1122
1123static int
1124slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1125{
1126 *frame = cctx_ssl_frame;
1127
1128 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1129}
1130
1131/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
794static void NOINLINE 1132static void NOINLINE
795prepare_cctx (pTHX_ coro_cctx *cctx) 1133cctx_prepare (pTHX)
796{ 1134{
797 dSP;
798 LOGOP myop;
799
800 PL_top_env = &PL_start_env; 1135 PL_top_env = &PL_start_env;
801 1136
802 if (cctx->flags & CC_TRACE) 1137 if (cctx_current->flags & CC_TRACE)
803 PL_runops = runops_trace; 1138 PL_runops = runops_trace;
804 1139
805 Zero (&myop, 1, LOGOP); 1140 /* we already must be executing an SLF op, there is no other valid way
806 myop.op_next = PL_op; 1141 * that can lead to creation of a new cctx */
807 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1142 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1143 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
808 1144
809 PUSHMARK (SP); 1145 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
810 EXTEND (SP, 2); 1146 cctx_ssl_frame = slf_frame;
811 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1147
812 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1148 slf_frame.prepare = slf_prepare_set_stacklevel;
813 PUTBACK; 1149 slf_frame.check = slf_check_set_stacklevel;
814 PL_op = (OP *)&myop; 1150}
815 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1151
816 SPAGAIN; 1152/* the tail of transfer: execute stuff we can only do after a transfer */
1153INLINE void
1154transfer_tail (pTHX)
1155{
1156 free_coro_mortal (aTHX);
817} 1157}
818 1158
819/* 1159/*
820 * this is a _very_ stripped down perl interpreter ;) 1160 * this is a _very_ stripped down perl interpreter ;)
821 */ 1161 */
822static void 1162static void
823coro_run (void *arg) 1163cctx_run (void *arg)
824{ 1164{
1165#ifdef USE_ITHREADS
1166# if CORO_PTHREAD
1167 PERL_SET_CONTEXT (coro_thx);
1168# endif
1169#endif
1170 {
825 dTHX; 1171 dTHX;
826 1172
827 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1173 /* normally we would need to skip the entersub here */
828 UNLOCK; 1174 /* not doing so will re-execute it, which is exactly what we want */
829
830 /* we now skip the entersub that lead to transfer() */
831 PL_op = PL_op->op_next; 1175 /* PL_nop = PL_nop->op_next */
832 1176
833 /* inject a fake subroutine call to cctx_init */ 1177 /* inject a fake subroutine call to cctx_init */
834 prepare_cctx (aTHX_ (coro_cctx *)arg); 1178 cctx_prepare (aTHX);
835 1179
1180 /* cctx_run is the alternative tail of transfer() */
1181 transfer_tail (aTHX);
1182
836 /* somebody or something will hit me for both perl_run and PL_restartop */ 1183 /* somebody or something will hit me for both perl_run and PL_restartop */
837 PL_restartop = PL_op; 1184 PL_restartop = PL_op;
838 perl_run (PL_curinterp); 1185 perl_run (PL_curinterp);
839
840 /* 1186 /*
1187 * Unfortunately, there is no way to get at the return values of the
1188 * coro body here, as perl_run destroys these
1189 */
1190
1191 /*
841 * If perl-run returns we assume exit() was being called or the coro 1192 * If perl-run returns we assume exit() was being called or the coro
842 * fell off the end, which seems to be the only valid (non-bug) 1193 * fell off the end, which seems to be the only valid (non-bug)
843 * reason for perl_run to return. We try to exit by jumping to the 1194 * reason for perl_run to return. We try to exit by jumping to the
844 * bootstrap-time "top" top_env, as we cannot restore the "main" 1195 * bootstrap-time "top" top_env, as we cannot restore the "main"
845 * coroutine as Coro has no such concept 1196 * coroutine as Coro has no such concept.
1197 * This actually isn't valid with the pthread backend, but OSes requiring
1198 * that backend are too broken to do it in a standards-compliant way.
846 */ 1199 */
847 PL_top_env = main_top_env; 1200 PL_top_env = main_top_env;
848 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1201 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1202 }
849} 1203}
850 1204
851static coro_cctx * 1205static coro_cctx *
852cctx_new () 1206cctx_new ()
853{ 1207{
854 coro_cctx *cctx; 1208 coro_cctx *cctx;
1209
1210 ++cctx_count;
1211 New (0, cctx, 1, coro_cctx);
1212
1213 cctx->gen = cctx_gen;
1214 cctx->flags = 0;
1215 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1216
1217 return cctx;
1218}
1219
1220/* create a new cctx only suitable as source */
1221static coro_cctx *
1222cctx_new_empty ()
1223{
1224 coro_cctx *cctx = cctx_new ();
1225
1226 cctx->sptr = 0;
1227 coro_create (&cctx->cctx, 0, 0, 0, 0);
1228
1229 return cctx;
1230}
1231
1232/* create a new cctx suitable as destination/running a perl interpreter */
1233static coro_cctx *
1234cctx_new_run ()
1235{
1236 coro_cctx *cctx = cctx_new ();
855 void *stack_start; 1237 void *stack_start;
856 size_t stack_size; 1238 size_t stack_size;
857 1239
858 ++cctx_count;
859
860 Newz (0, cctx, 1, coro_cctx);
861
862#if HAVE_MMAP 1240#if HAVE_MMAP
863
864 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1241 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
865 /* mmap supposedly does allocate-on-write for us */ 1242 /* mmap supposedly does allocate-on-write for us */
866 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1243 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
867 1244
868 if (cctx->sptr != (void *)-1) 1245 if (cctx->sptr != (void *)-1)
869 { 1246 {
870# if CORO_STACKGUARD 1247 #if CORO_STACKGUARD
871 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1248 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
872# endif 1249 #endif
873 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1250 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
874 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1251 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
875 cctx->flags |= CC_MAPPED; 1252 cctx->flags |= CC_MAPPED;
876 } 1253 }
877 else 1254 else
878#endif 1255#endif
879 { 1256 {
880 cctx->ssize = coro_stacksize * (long)sizeof (long); 1257 cctx->ssize = cctx_stacksize * (long)sizeof (long);
881 New (0, cctx->sptr, coro_stacksize, long); 1258 New (0, cctx->sptr, cctx_stacksize, long);
882 1259
883 if (!cctx->sptr) 1260 if (!cctx->sptr)
884 { 1261 {
885 perror ("FATAL: unable to allocate stack for coroutine"); 1262 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
886 _exit (EXIT_FAILURE); 1263 _exit (EXIT_FAILURE);
887 } 1264 }
888 1265
889 stack_start = cctx->sptr; 1266 stack_start = cctx->sptr;
890 stack_size = cctx->ssize; 1267 stack_size = cctx->ssize;
891 } 1268 }
892 1269
893 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1270 #if CORO_USE_VALGRIND
1271 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1272 #endif
1273
894 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1274 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
895 1275
896 return cctx; 1276 return cctx;
897} 1277}
898 1278
899static void 1279static void
900cctx_destroy (coro_cctx *cctx) 1280cctx_destroy (coro_cctx *cctx)
901{ 1281{
902 if (!cctx) 1282 if (!cctx)
903 return; 1283 return;
904 1284
1285 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1286
905 --cctx_count; 1287 --cctx_count;
1288 coro_destroy (&cctx->cctx);
906 1289
1290 /* coro_transfer creates new, empty cctx's */
1291 if (cctx->sptr)
1292 {
907#if CORO_USE_VALGRIND 1293 #if CORO_USE_VALGRIND
908 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1294 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
909#endif 1295 #endif
910 1296
911#if HAVE_MMAP 1297#if HAVE_MMAP
912 if (cctx->flags & CC_MAPPED) 1298 if (cctx->flags & CC_MAPPED)
913 munmap (cctx->sptr, cctx->ssize); 1299 munmap (cctx->sptr, cctx->ssize);
914 else 1300 else
915#endif 1301#endif
916 Safefree (cctx->sptr); 1302 Safefree (cctx->sptr);
1303 }
917 1304
918 Safefree (cctx); 1305 Safefree (cctx);
919} 1306}
1307
1308/* wether this cctx should be destructed */
1309#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
920 1310
921static coro_cctx * 1311static coro_cctx *
922cctx_get (pTHX) 1312cctx_get (pTHX)
923{ 1313{
924 while (cctx_first) 1314 while (expect_true (cctx_first))
925 { 1315 {
926 coro_cctx *cctx = cctx_first; 1316 coro_cctx *cctx = cctx_first;
927 cctx_first = cctx->next; 1317 cctx_first = cctx->next;
928 --cctx_idle; 1318 --cctx_idle;
929 1319
930 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1320 if (expect_true (!CCTX_EXPIRED (cctx)))
931 return cctx; 1321 return cctx;
932 1322
933 cctx_destroy (cctx); 1323 cctx_destroy (cctx);
934 } 1324 }
935 1325
936 return cctx_new (); 1326 return cctx_new_run ();
937} 1327}
938 1328
939static void 1329static void
940cctx_put (coro_cctx *cctx) 1330cctx_put (coro_cctx *cctx)
941{ 1331{
1332 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1333
942 /* free another cctx if overlimit */ 1334 /* free another cctx if overlimit */
943 if (cctx_idle >= MAX_IDLE_CCTX) 1335 if (expect_false (cctx_idle >= cctx_max_idle))
944 { 1336 {
945 coro_cctx *first = cctx_first; 1337 coro_cctx *first = cctx_first;
946 cctx_first = first->next; 1338 cctx_first = first->next;
947 --cctx_idle; 1339 --cctx_idle;
948 1340
… …
954 cctx_first = cctx; 1346 cctx_first = cctx;
955} 1347}
956 1348
957/** coroutine switching *****************************************************/ 1349/** coroutine switching *****************************************************/
958 1350
959static void NOINLINE 1351static void
960transfer_check (pTHX_ struct coro *prev, struct coro *next) 1352transfer_check (pTHX_ struct coro *prev, struct coro *next)
961{ 1353{
962 if (prev != next) 1354 /* TODO: throwing up here is considered harmful */
1355
1356 if (expect_true (prev != next))
963 { 1357 {
964 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1358 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
965 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1359 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
966 1360
967 if (next->flags & CF_RUNNING) 1361 if (expect_false (next->flags & CF_RUNNING))
968 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1362 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
969 1363
970 if (next->flags & CF_DESTROYED) 1364 if (expect_false (next->flags & CF_DESTROYED))
971 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1365 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
972 1366
1367#if !PERL_VERSION_ATLEAST (5,10,0)
973 if (PL_lex_state != LEX_NOTPARSING) 1368 if (expect_false (PL_lex_state != LEX_NOTPARSING))
974 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1369 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1370#endif
975 } 1371 }
976} 1372}
977 1373
978/* always use the TRANSFER macro */ 1374/* always use the TRANSFER macro */
979static void NOINLINE 1375static void NOINLINE /* noinline so we have a fixed stackframe */
980transfer (pTHX_ struct coro *prev, struct coro *next) 1376transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
981{ 1377{
982 dSTACKLEVEL; 1378 dSTACKLEVEL;
983 1379
984 /* sometimes transfer is only called to set idle_sp */ 1380 /* sometimes transfer is only called to set idle_sp */
985 if (!next) 1381 if (expect_false (!prev))
986 { 1382 {
987 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1383 cctx_current->idle_sp = STACKLEVEL;
988 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1384 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
989 }
990 else if (prev != next)
991 { 1385 }
1386 else if (expect_true (prev != next))
1387 {
992 coro_cctx *prev__cctx; 1388 coro_cctx *cctx_prev;
993 1389
994 if (prev->flags & CF_NEW) 1390 if (expect_false (prev->flags & CF_NEW))
995 { 1391 {
996 /* create a new empty context */ 1392 /* create a new empty/source context */
997 Newz (0, prev->cctx, 1, coro_cctx);
998 prev->flags &= ~CF_NEW; 1393 prev->flags &= ~CF_NEW;
999 prev->flags |= CF_RUNNING; 1394 prev->flags |= CF_RUNNING;
1000 } 1395 }
1001 1396
1002 prev->flags &= ~CF_RUNNING; 1397 prev->flags &= ~CF_RUNNING;
1003 next->flags |= CF_RUNNING; 1398 next->flags |= CF_RUNNING;
1004 1399
1005 LOCK; 1400 /* first get rid of the old state */
1401 save_perl (aTHX_ prev);
1006 1402
1007 if (next->flags & CF_NEW) 1403 if (expect_false (next->flags & CF_NEW))
1008 { 1404 {
1009 /* need to start coroutine */ 1405 /* need to start coroutine */
1010 next->flags &= ~CF_NEW; 1406 next->flags &= ~CF_NEW;
1011 /* first get rid of the old state */
1012 save_perl (aTHX_ prev);
1013 /* setup coroutine call */ 1407 /* setup coroutine call */
1014 setup_coro (aTHX_ next); 1408 coro_setup (aTHX_ next);
1015 } 1409 }
1016 else 1410 else
1411 load_perl (aTHX_ next);
1412
1413 /* possibly untie and reuse the cctx */
1414 if (expect_true (
1415 cctx_current->idle_sp == STACKLEVEL
1416 && !(cctx_current->flags & CC_TRACE)
1417 && !force_cctx
1418 ))
1017 { 1419 {
1018 /* coroutine already started */ 1420 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1019 save_perl (aTHX_ prev); 1421 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1020 load_perl (aTHX_ next); 1422
1423 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1424 /* without this the next cctx_get might destroy the running cctx while still in use */
1425 if (expect_false (CCTX_EXPIRED (cctx_current)))
1426 if (expect_true (!next->cctx))
1427 next->cctx = cctx_get (aTHX);
1428
1429 cctx_put (cctx_current);
1021 } 1430 }
1431 else
1432 prev->cctx = cctx_current;
1022 1433
1023 prev__cctx = prev->cctx; 1434 ++next->usecount;
1024 1435
1025 /* possibly "free" the cctx */ 1436 cctx_prev = cctx_current;
1026 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)) 1437 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1438
1439 next->cctx = 0;
1440
1441 if (expect_false (cctx_prev != cctx_current))
1027 { 1442 {
1028 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1443 cctx_prev->top_env = PL_top_env;
1029 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1444 PL_top_env = cctx_current->top_env;
1030 1445 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1031 prev->cctx = 0;
1032
1033 cctx_put (prev__cctx);
1034 } 1446 }
1035 1447
1036 ++next->usecount; 1448 transfer_tail (aTHX);
1037
1038 if (!next->cctx)
1039 next->cctx = cctx_get (aTHX);
1040
1041 if (prev__cctx != next->cctx)
1042 {
1043 prev__cctx->top_env = PL_top_env;
1044 PL_top_env = next->cctx->top_env;
1045 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1046 }
1047
1048 free_coro_mortal (aTHX);
1049 UNLOCK;
1050 } 1449 }
1051} 1450}
1052 1451
1053struct transfer_args
1054{
1055 struct coro *prev, *next;
1056};
1057
1058#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1452#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1059#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1453#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1060 1454
1061/** high level stuff ********************************************************/ 1455/** high level stuff ********************************************************/
1062 1456
1063static int 1457static int
1064coro_state_destroy (pTHX_ struct coro *coro) 1458coro_state_destroy (pTHX_ struct coro *coro)
1065{ 1459{
1066 if (coro->flags & CF_DESTROYED) 1460 if (coro->flags & CF_DESTROYED)
1067 return 0; 1461 return 0;
1462
1463 if (coro->on_destroy)
1464 coro->on_destroy (aTHX_ coro);
1068 1465
1069 coro->flags |= CF_DESTROYED; 1466 coro->flags |= CF_DESTROYED;
1070 1467
1071 if (coro->flags & CF_READY) 1468 if (coro->flags & CF_READY)
1072 { 1469 {
1073 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1470 /* reduce nready, as destroying a ready coro effectively unreadies it */
1074 /* alternative: look through all ready queues and remove the coro */ 1471 /* alternative: look through all ready queues and remove the coro */
1075 LOCK;
1076 --coro_nready; 1472 --coro_nready;
1077 UNLOCK;
1078 } 1473 }
1079 else 1474 else
1080 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1475 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1081 1476
1082 if (coro->mainstack && coro->mainstack != main_mainstack) 1477 if (coro->mainstack
1478 && coro->mainstack != main_mainstack
1479 && coro->slot
1480 && !PL_dirty)
1083 { 1481 {
1084 struct coro temp; 1482 struct coro temp;
1085 1483
1086 assert (!(coro->flags & CF_RUNNING)); 1484 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1087
1088 Zero (&temp, 1, struct coro);
1089 temp.save = CORO_SAVE_ALL;
1090
1091 if (coro->flags & CF_RUNNING)
1092 croak ("FATAL: tried to destroy currently running coroutine");
1093 1485
1094 save_perl (aTHX_ &temp); 1486 save_perl (aTHX_ &temp);
1095 load_perl (aTHX_ coro); 1487 load_perl (aTHX_ coro);
1096 1488
1097 coro_destroy_stacks (aTHX); 1489 coro_destruct_perl (aTHX_ coro);
1098 1490
1099 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1491 load_perl (aTHX_ &temp);
1100 1492
1101 coro->mainstack = 0; 1493 coro->slot = 0;
1102 } 1494 }
1103 1495
1104 cctx_destroy (coro->cctx); 1496 cctx_destroy (coro->cctx);
1497 SvREFCNT_dec (coro->startcv);
1105 SvREFCNT_dec (coro->args); 1498 SvREFCNT_dec (coro->args);
1499 SvREFCNT_dec (CORO_THROW);
1106 1500
1107 if (coro->next) coro->next->prev = coro->prev; 1501 if (coro->next) coro->next->prev = coro->prev;
1108 if (coro->prev) coro->prev->next = coro->next; 1502 if (coro->prev) coro->prev->next = coro->next;
1109 if (coro == coro_first) coro_first = coro->next; 1503 if (coro == coro_first) coro_first = coro->next;
1110 1504
… …
1148# define MGf_DUP 0 1542# define MGf_DUP 0
1149#endif 1543#endif
1150}; 1544};
1151 1545
1152static void 1546static void
1153prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1547prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1154{ 1548{
1155 ta->prev = SvSTATE (prev_sv); 1549 ta->prev = SvSTATE (prev_sv);
1156 ta->next = SvSTATE (next_sv); 1550 ta->next = SvSTATE (next_sv);
1157 TRANSFER_CHECK (*ta); 1551 TRANSFER_CHECK (*ta);
1158} 1552}
1159 1553
1160static void 1554static void
1161api_transfer (SV *prev_sv, SV *next_sv) 1555api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1162{ 1556{
1163 dTHX;
1164 struct transfer_args ta; 1557 struct coro_transfer_args ta;
1165 1558
1166 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1559 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167 TRANSFER (ta); 1560 TRANSFER (ta, 1);
1168} 1561}
1169 1562
1170static int 1563/*****************************************************************************/
1171api_save (SV *coro_sv, int new_save) 1564/* gensub: simple closure generation utility */
1172{
1173 dTHX;
1174 struct coro *coro = SvSTATE (coro_sv);
1175 int old_save = coro->save;
1176 1565
1177 if (new_save >= 0) 1566#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1178 coro->save = new_save;
1179 1567
1180 return old_save; 1568/* create a closure from XS, returns a code reference */
1569/* the arg can be accessed via GENSUB_ARG from the callback */
1570/* the callback must use dXSARGS/XSRETURN */
1571static SV *
1572gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1573{
1574 CV *cv = (CV *)newSV (0);
1575
1576 sv_upgrade ((SV *)cv, SVt_PVCV);
1577
1578 CvANON_on (cv);
1579 CvISXSUB_on (cv);
1580 CvXSUB (cv) = xsub;
1581 GENSUB_ARG = arg;
1582
1583 return newRV_noinc ((SV *)cv);
1181} 1584}
1182 1585
1183/** Coro ********************************************************************/ 1586/** Coro ********************************************************************/
1184 1587
1185static void 1588INLINE void
1186coro_enq (pTHX_ SV *coro_sv) 1589coro_enq (pTHX_ struct coro *coro)
1187{ 1590{
1188 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1591 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1189} 1592}
1190 1593
1191static SV * 1594INLINE SV *
1192coro_deq (pTHX_ int min_prio) 1595coro_deq (pTHX)
1193{ 1596{
1194 int prio = PRIO_MAX - PRIO_MIN; 1597 int prio;
1195 1598
1196 min_prio -= PRIO_MIN;
1197 if (min_prio < 0)
1198 min_prio = 0;
1199
1200 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1599 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1201 if (AvFILLp (coro_ready [prio]) >= 0) 1600 if (AvFILLp (coro_ready [prio]) >= 0)
1202 return av_shift (coro_ready [prio]); 1601 return av_shift (coro_ready [prio]);
1203 1602
1204 return 0; 1603 return 0;
1205} 1604}
1206 1605
1207static int 1606static int
1208api_ready (SV *coro_sv) 1607api_ready (pTHX_ SV *coro_sv)
1209{ 1608{
1210 dTHX;
1211 struct coro *coro; 1609 struct coro *coro;
1212 1610 SV *sv_hook;
1213 if (SvROK (coro_sv)) 1611 void (*xs_hook)(void);
1214 coro_sv = SvRV (coro_sv);
1215 1612
1216 coro = SvSTATE (coro_sv); 1613 coro = SvSTATE (coro_sv);
1217 1614
1218 if (coro->flags & CF_READY) 1615 if (coro->flags & CF_READY)
1219 return 0; 1616 return 0;
1220 1617
1221 coro->flags |= CF_READY; 1618 coro->flags |= CF_READY;
1222 1619
1223 LOCK; 1620 sv_hook = coro_nready ? 0 : coro_readyhook;
1224 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1621 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1622
1623 coro_enq (aTHX_ coro);
1225 ++coro_nready; 1624 ++coro_nready;
1226 UNLOCK; 1625
1626 if (sv_hook)
1627 {
1628 dSP;
1629
1630 ENTER;
1631 SAVETMPS;
1632
1633 PUSHMARK (SP);
1634 PUTBACK;
1635 call_sv (sv_hook, G_VOID | G_DISCARD);
1636
1637 FREETMPS;
1638 LEAVE;
1639 }
1640
1641 if (xs_hook)
1642 xs_hook ();
1227 1643
1228 return 1; 1644 return 1;
1229} 1645}
1230 1646
1231static int 1647static int
1232api_is_ready (SV *coro_sv) 1648api_is_ready (pTHX_ SV *coro_sv)
1233{ 1649{
1234 dTHX;
1235 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1650 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1236} 1651}
1237 1652
1238static void 1653/* expects to own a reference to next->hv */
1654INLINE void
1239prepare_schedule (pTHX_ struct transfer_args *ta) 1655prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1240{ 1656{
1241 SV *prev_sv, *next_sv;
1242
1243 for (;;)
1244 {
1245 LOCK;
1246 next_sv = coro_deq (aTHX_ PRIO_MIN);
1247
1248 /* nothing to schedule: call the idle handler */
1249 if (!next_sv)
1250 {
1251 dSP;
1252 UNLOCK;
1253
1254 ENTER;
1255 SAVETMPS;
1256
1257 PUSHMARK (SP);
1258 PUTBACK;
1259 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1260
1261 FREETMPS;
1262 LEAVE;
1263 continue;
1264 }
1265
1266 ta->next = SvSTATE (next_sv);
1267
1268 /* cannot transfer to destroyed coros, skip and look for next */
1269 if (ta->next->flags & CF_DESTROYED)
1270 {
1271 UNLOCK;
1272 SvREFCNT_dec (next_sv);
1273 /* coro_nready is already taken care of by destroy */
1274 continue;
1275 }
1276
1277 --coro_nready;
1278 UNLOCK;
1279 break;
1280 }
1281
1282 /* free this only after the transfer */
1283 prev_sv = SvRV (coro_current); 1657 SV *prev_sv = SvRV (coro_current);
1658
1284 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1660 ta->next = next;
1661
1285 TRANSFER_CHECK (*ta); 1662 TRANSFER_CHECK (*ta);
1286 assert (ta->next->flags & CF_READY); 1663
1287 ta->next->flags &= ~CF_READY;
1288 SvRV_set (coro_current, next_sv); 1664 SvRV_set (coro_current, (SV *)next->hv);
1289 1665
1290 LOCK;
1291 free_coro_mortal (aTHX); 1666 free_coro_mortal (aTHX);
1292 coro_mortal = prev_sv; 1667 coro_mortal = prev_sv;
1293 UNLOCK;
1294} 1668}
1295 1669
1296static void 1670static void
1671prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1672{
1673 for (;;)
1674 {
1675 SV *next_sv = coro_deq (aTHX);
1676
1677 if (expect_true (next_sv))
1678 {
1679 struct coro *next = SvSTATE_hv (next_sv);
1680
1681 /* cannot transfer to destroyed coros, skip and look for next */
1682 if (expect_false (next->flags & CF_DESTROYED))
1683 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1684 else
1685 {
1686 next->flags &= ~CF_READY;
1687 --coro_nready;
1688
1689 prepare_schedule_to (aTHX_ ta, next);
1690 break;
1691 }
1692 }
1693 else
1694 {
1695 /* nothing to schedule: call the idle handler */
1696 if (SvROK (sv_idle)
1697 && SvOBJECT (SvRV (sv_idle)))
1698 {
1699 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1700 api_ready (aTHX_ SvRV (sv_idle));
1701 --coro_nready;
1702 }
1703 else
1704 {
1705 dSP;
1706
1707 ENTER;
1708 SAVETMPS;
1709
1710 PUSHMARK (SP);
1711 PUTBACK;
1712 call_sv (sv_idle, G_VOID | G_DISCARD);
1713
1714 FREETMPS;
1715 LEAVE;
1716 }
1717 }
1718 }
1719}
1720
1721INLINE void
1297prepare_cede (pTHX_ struct transfer_args *ta) 1722prepare_cede (pTHX_ struct coro_transfer_args *ta)
1298{ 1723{
1299 api_ready (coro_current); 1724 api_ready (aTHX_ coro_current);
1300 prepare_schedule (aTHX_ ta); 1725 prepare_schedule (aTHX_ ta);
1301} 1726}
1302 1727
1728INLINE void
1729prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1730{
1731 SV *prev = SvRV (coro_current);
1732
1733 if (coro_nready)
1734 {
1735 prepare_schedule (aTHX_ ta);
1736 api_ready (aTHX_ prev);
1737 }
1738 else
1739 prepare_nop (aTHX_ ta);
1740}
1741
1742static void
1743api_schedule (pTHX)
1744{
1745 struct coro_transfer_args ta;
1746
1747 prepare_schedule (aTHX_ &ta);
1748 TRANSFER (ta, 1);
1749}
1750
1751static void
1752api_schedule_to (pTHX_ SV *coro_sv)
1753{
1754 struct coro_transfer_args ta;
1755 struct coro *next = SvSTATE (coro_sv);
1756
1757 SvREFCNT_inc_NN (coro_sv);
1758 prepare_schedule_to (aTHX_ &ta, next);
1759}
1760
1303static int 1761static int
1304prepare_cede_notself (pTHX_ struct transfer_args *ta) 1762api_cede (pTHX)
1305{ 1763{
1306 if (coro_nready) 1764 struct coro_transfer_args ta;
1307 { 1765
1308 SV *prev = SvRV (coro_current);
1309 prepare_schedule (aTHX_ ta); 1766 prepare_cede (aTHX_ &ta);
1310 api_ready (prev); 1767
1768 if (expect_true (ta.prev != ta.next))
1769 {
1770 TRANSFER (ta, 1);
1311 return 1; 1771 return 1;
1312 } 1772 }
1313 else 1773 else
1314 return 0; 1774 return 0;
1315} 1775}
1316 1776
1317static void
1318api_schedule (void)
1319{
1320 dTHX;
1321 struct transfer_args ta;
1322
1323 prepare_schedule (aTHX_ &ta);
1324 TRANSFER (ta);
1325}
1326
1327static int 1777static int
1328api_cede (void) 1778api_cede_notself (pTHX)
1329{ 1779{
1330 dTHX; 1780 if (coro_nready)
1781 {
1331 struct transfer_args ta; 1782 struct coro_transfer_args ta;
1332 1783
1333 prepare_cede (aTHX_ &ta); 1784 prepare_cede_notself (aTHX_ &ta);
1334
1335 if (ta.prev != ta.next)
1336 {
1337 TRANSFER (ta); 1785 TRANSFER (ta, 1);
1338 return 1; 1786 return 1;
1339 } 1787 }
1340 else 1788 else
1341 return 0; 1789 return 0;
1342} 1790}
1343 1791
1344static int 1792static void
1345api_cede_notself (void)
1346{
1347 dTHX;
1348 struct transfer_args ta;
1349
1350 if (prepare_cede_notself (aTHX_ &ta))
1351 {
1352 TRANSFER (ta);
1353 return 1;
1354 }
1355 else
1356 return 0;
1357}
1358
1359static void
1360api_trace (SV *coro_sv, int flags) 1793api_trace (pTHX_ SV *coro_sv, int flags)
1361{ 1794{
1362 dTHX;
1363 struct coro *coro = SvSTATE (coro_sv); 1795 struct coro *coro = SvSTATE (coro_sv);
1364 1796
1797 if (coro->flags & CF_RUNNING)
1798 croak ("cannot enable tracing on a running coroutine, caught");
1799
1365 if (flags & CC_TRACE) 1800 if (flags & CC_TRACE)
1366 { 1801 {
1367 if (!coro->cctx) 1802 if (!coro->cctx)
1368 coro->cctx = cctx_new (); 1803 coro->cctx = cctx_new_run ();
1369 else if (!(coro->cctx->flags & CC_TRACE)) 1804 else if (!(coro->cctx->flags & CC_TRACE))
1370 croak ("cannot enable tracing on coroutine with custom stack"); 1805 croak ("cannot enable tracing on coroutine with custom stack, caught");
1371 1806
1372 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1807 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1373 } 1808 }
1374 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1809 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1375 { 1810 {
1376 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1811 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1377 1812
1378 if (coro->flags & CF_RUNNING) 1813 if (coro->flags & CF_RUNNING)
1379 PL_runops = RUNOPS_DEFAULT; 1814 PL_runops = RUNOPS_DEFAULT;
1380 else 1815 else
1381 coro->runops = RUNOPS_DEFAULT; 1816 coro->slot->runops = RUNOPS_DEFAULT;
1817 }
1818}
1819
1820static void
1821coro_call_on_destroy (pTHX_ struct coro *coro)
1822{
1823 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1824 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1825
1826 if (on_destroyp)
1827 {
1828 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1829
1830 while (AvFILLp (on_destroy) >= 0)
1831 {
1832 dSP; /* don't disturb outer sp */
1833 SV *cb = av_pop (on_destroy);
1834
1835 PUSHMARK (SP);
1836
1837 if (statusp)
1838 {
1839 int i;
1840 AV *status = (AV *)SvRV (*statusp);
1841 EXTEND (SP, AvFILLp (status) + 1);
1842
1843 for (i = 0; i <= AvFILLp (status); ++i)
1844 PUSHs (AvARRAY (status)[i]);
1845 }
1846
1847 PUTBACK;
1848 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1849 }
1850 }
1851}
1852
1853static void
1854slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1855{
1856 int i;
1857 HV *hv = (HV *)SvRV (coro_current);
1858 AV *av = newAV ();
1859
1860 av_extend (av, items - 1);
1861 for (i = 0; i < items; ++i)
1862 av_push (av, SvREFCNT_inc_NN (arg [i]));
1863
1864 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1865
1866 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1867 api_ready (aTHX_ sv_manager);
1868
1869 frame->prepare = prepare_schedule;
1870 frame->check = slf_check_repeat;
1871
1872 /* as a minor optimisation, we could unwind all stacks here */
1873 /* but that puts extra pressure on pp_slf, and is not worth much */
1874 /*coro_unwind_stacks (aTHX);*/
1875}
1876
1877/*****************************************************************************/
1878/* async pool handler */
1879
1880static int
1881slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1882{
1883 HV *hv = (HV *)SvRV (coro_current);
1884 struct coro *coro = (struct coro *)frame->data;
1885
1886 if (!coro->invoke_cb)
1887 return 1; /* loop till we have invoke */
1888 else
1889 {
1890 hv_store (hv, "desc", sizeof ("desc") - 1,
1891 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1892
1893 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1894
1895 {
1896 dSP;
1897 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1898 PUTBACK;
1382 } 1899 }
1900
1901 SvREFCNT_dec (GvAV (PL_defgv));
1902 GvAV (PL_defgv) = coro->invoke_av;
1903 coro->invoke_av = 0;
1904
1905 return 0;
1906 }
1383} 1907}
1908
1909static void
1910slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{
1912 HV *hv = (HV *)SvRV (coro_current);
1913 struct coro *coro = SvSTATE_hv ((SV *)hv);
1914
1915 if (expect_true (coro->saved_deffh))
1916 {
1917 /* subsequent iteration */
1918 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1919 coro->saved_deffh = 0;
1920
1921 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1922 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1923 {
1924 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1925 coro->invoke_av = newAV ();
1926
1927 frame->prepare = prepare_nop;
1928 }
1929 else
1930 {
1931 av_clear (GvAV (PL_defgv));
1932 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1933
1934 coro->prio = 0;
1935
1936 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1937 api_trace (aTHX_ coro_current, 0);
1938
1939 frame->prepare = prepare_schedule;
1940 av_push (av_async_pool, SvREFCNT_inc (hv));
1941 }
1942 }
1943 else
1944 {
1945 /* first iteration, simply fall through */
1946 frame->prepare = prepare_nop;
1947 }
1948
1949 frame->check = slf_check_pool_handler;
1950 frame->data = (void *)coro;
1951}
1952
1953/*****************************************************************************/
1954/* rouse callback */
1955
1956#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1957
1958static void
1959coro_rouse_callback (pTHX_ CV *cv)
1960{
1961 dXSARGS;
1962 SV *data = (SV *)GENSUB_ARG;
1963
1964 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1965 {
1966 /* first call, set args */
1967 AV *av = newAV ();
1968 SV *coro = SvRV (data);
1969
1970 SvRV_set (data, (SV *)av);
1971 api_ready (aTHX_ coro);
1972 SvREFCNT_dec (coro);
1973
1974 /* better take a full copy of the arguments */
1975 while (items--)
1976 av_store (av, items, newSVsv (ST (items)));
1977 }
1978
1979 XSRETURN_EMPTY;
1980}
1981
1982static int
1983slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1984{
1985 SV *data = (SV *)frame->data;
1986
1987 if (CORO_THROW)
1988 return 0;
1989
1990 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991 return 1;
1992
1993 /* now push all results on the stack */
1994 {
1995 dSP;
1996 AV *av = (AV *)SvRV (data);
1997 int i;
1998
1999 EXTEND (SP, AvFILLp (av) + 1);
2000 for (i = 0; i <= AvFILLp (av); ++i)
2001 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2002
2003 /* we have stolen the elements, so ste length to zero and free */
2004 AvFILLp (av) = -1;
2005 av_undef (av);
2006
2007 PUTBACK;
2008 }
2009
2010 return 0;
2011}
2012
2013static void
2014slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2015{
2016 SV *cb;
2017
2018 if (items)
2019 cb = arg [0];
2020 else
2021 {
2022 struct coro *coro = SvSTATE_current;
2023
2024 if (!coro->rouse_cb)
2025 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2026
2027 cb = sv_2mortal (coro->rouse_cb);
2028 coro->rouse_cb = 0;
2029 }
2030
2031 if (!SvROK (cb)
2032 || SvTYPE (SvRV (cb)) != SVt_PVCV
2033 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2034 croak ("Coro::rouse_wait called with illegal callback argument,");
2035
2036 {
2037 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2038 SV *data = (SV *)GENSUB_ARG;
2039
2040 frame->data = (void *)data;
2041 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2042 frame->check = slf_check_rouse_wait;
2043 }
2044}
2045
2046static SV *
2047coro_new_rouse_cb (pTHX)
2048{
2049 HV *hv = (HV *)SvRV (coro_current);
2050 struct coro *coro = SvSTATE_hv (hv);
2051 SV *data = newRV_inc ((SV *)hv);
2052 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2053
2054 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2055 SvREFCNT_dec (data); /* magicext increases the refcount */
2056
2057 SvREFCNT_dec (coro->rouse_cb);
2058 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2059
2060 return cb;
2061}
2062
2063/*****************************************************************************/
2064/* schedule-like-function opcode (SLF) */
2065
2066static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2067static const CV *slf_cv;
2068static SV **slf_argv;
2069static int slf_argc, slf_arga; /* count, allocated */
2070static I32 slf_ax; /* top of stack, for restore */
2071
2072/* this restores the stack in the case we patched the entersub, to */
2073/* recreate the stack frame as perl will on following calls */
2074/* since entersub cleared the stack */
2075static OP *
2076pp_restore (pTHX)
2077{
2078 int i;
2079 SV **SP = PL_stack_base + slf_ax;
2080
2081 PUSHMARK (SP);
2082
2083 EXTEND (SP, slf_argc + 1);
2084
2085 for (i = 0; i < slf_argc; ++i)
2086 PUSHs (sv_2mortal (slf_argv [i]));
2087
2088 PUSHs ((SV *)CvGV (slf_cv));
2089
2090 RETURNOP (slf_restore.op_first);
2091}
2092
2093static void
2094slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2095{
2096 SV **arg = (SV **)slf_frame.data;
2097
2098 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2099}
2100
2101static void
2102slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2103{
2104 if (items != 2)
2105 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2106
2107 frame->prepare = slf_prepare_transfer;
2108 frame->check = slf_check_nop;
2109 frame->data = (void *)arg; /* let's hope it will stay valid */
2110}
2111
2112static void
2113slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2114{
2115 frame->prepare = prepare_schedule;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2121{
2122 struct coro *next = (struct coro *)slf_frame.data;
2123
2124 SvREFCNT_inc_NN (next->hv);
2125 prepare_schedule_to (aTHX_ ta, next);
2126}
2127
2128static void
2129slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2130{
2131 if (!items)
2132 croak ("Coro::schedule_to expects a coroutine argument, caught");
2133
2134 frame->data = (void *)SvSTATE (arg [0]);
2135 frame->prepare = slf_prepare_schedule_to;
2136 frame->check = slf_check_nop;
2137}
2138
2139static void
2140slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 api_ready (aTHX_ SvRV (coro_current));
2143
2144 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2145}
2146
2147static void
2148slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2149{
2150 frame->prepare = prepare_cede;
2151 frame->check = slf_check_nop;
2152}
2153
2154static void
2155slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 frame->prepare = prepare_cede_notself;
2158 frame->check = slf_check_nop;
2159}
2160
2161/*
2162 * these not obviously related functions are all rolled into one
2163 * function to increase chances that they all will call transfer with the same
2164 * stack offset
2165 * SLF stands for "schedule-like-function".
2166 */
2167static OP *
2168pp_slf (pTHX)
2169{
2170 I32 checkmark; /* mark SP to see how many elements check has pushed */
2171
2172 /* set up the slf frame, unless it has already been set-up */
2173 /* the latter happens when a new coro has been started */
2174 /* or when a new cctx was attached to an existing coroutine */
2175 if (expect_true (!slf_frame.prepare))
2176 {
2177 /* first iteration */
2178 dSP;
2179 SV **arg = PL_stack_base + TOPMARK + 1;
2180 int items = SP - arg; /* args without function object */
2181 SV *gv = *sp;
2182
2183 /* do a quick consistency check on the "function" object, and if it isn't */
2184 /* for us, divert to the real entersub */
2185 if (SvTYPE (gv) != SVt_PVGV
2186 || !GvCV (gv)
2187 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2188 return PL_ppaddr[OP_ENTERSUB](aTHX);
2189
2190 if (!(PL_op->op_flags & OPf_STACKED))
2191 {
2192 /* ampersand-form of call, use @_ instead of stack */
2193 AV *av = GvAV (PL_defgv);
2194 arg = AvARRAY (av);
2195 items = AvFILLp (av) + 1;
2196 }
2197
2198 /* now call the init function, which needs to set up slf_frame */
2199 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2200 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2201
2202 /* pop args */
2203 SP = PL_stack_base + POPMARK;
2204
2205 PUTBACK;
2206 }
2207
2208 /* now that we have a slf_frame, interpret it! */
2209 /* we use a callback system not to make the code needlessly */
2210 /* complicated, but so we can run multiple perl coros from one cctx */
2211
2212 do
2213 {
2214 struct coro_transfer_args ta;
2215
2216 slf_frame.prepare (aTHX_ &ta);
2217 TRANSFER (ta, 0);
2218
2219 checkmark = PL_stack_sp - PL_stack_base;
2220 }
2221 while (slf_frame.check (aTHX_ &slf_frame));
2222
2223 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2224
2225 /* exception handling */
2226 if (expect_false (CORO_THROW))
2227 {
2228 SV *exception = sv_2mortal (CORO_THROW);
2229
2230 CORO_THROW = 0;
2231 sv_setsv (ERRSV, exception);
2232 croak (0);
2233 }
2234
2235 /* return value handling - mostly like entersub */
2236 /* make sure we put something on the stack in scalar context */
2237 if (GIMME_V == G_SCALAR)
2238 {
2239 dSP;
2240 SV **bot = PL_stack_base + checkmark;
2241
2242 if (sp == bot) /* too few, push undef */
2243 bot [1] = &PL_sv_undef;
2244 else if (sp != bot + 1) /* too many, take last one */
2245 bot [1] = *sp;
2246
2247 SP = bot + 1;
2248
2249 PUTBACK;
2250 }
2251
2252 return NORMAL;
2253}
2254
2255static void
2256api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2257{
2258 int i;
2259 SV **arg = PL_stack_base + ax;
2260 int items = PL_stack_sp - arg + 1;
2261
2262 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2263
2264 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2265 && PL_op->op_ppaddr != pp_slf)
2266 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2267
2268 CvFLAGS (cv) |= CVf_SLF;
2269 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2270 slf_cv = cv;
2271
2272 /* we patch the op, and then re-run the whole call */
2273 /* we have to put the same argument on the stack for this to work */
2274 /* and this will be done by pp_restore */
2275 slf_restore.op_next = (OP *)&slf_restore;
2276 slf_restore.op_type = OP_CUSTOM;
2277 slf_restore.op_ppaddr = pp_restore;
2278 slf_restore.op_first = PL_op;
2279
2280 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2281
2282 if (PL_op->op_flags & OPf_STACKED)
2283 {
2284 if (items > slf_arga)
2285 {
2286 slf_arga = items;
2287 free (slf_argv);
2288 slf_argv = malloc (slf_arga * sizeof (SV *));
2289 }
2290
2291 slf_argc = items;
2292
2293 for (i = 0; i < items; ++i)
2294 slf_argv [i] = SvREFCNT_inc (arg [i]);
2295 }
2296 else
2297 slf_argc = 0;
2298
2299 PL_op->op_ppaddr = pp_slf;
2300 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2301
2302 PL_op = (OP *)&slf_restore;
2303}
2304
2305/*****************************************************************************/
2306/* PerlIO::cede */
2307
2308typedef struct
2309{
2310 PerlIOBuf base;
2311 NV next, every;
2312} PerlIOCede;
2313
2314static IV
2315PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2316{
2317 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2318
2319 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2320 self->next = nvtime () + self->every;
2321
2322 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2323}
2324
2325static SV *
2326PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2327{
2328 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2329
2330 return newSVnv (self->every);
2331}
2332
2333static IV
2334PerlIOCede_flush (pTHX_ PerlIO *f)
2335{
2336 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2337 double now = nvtime ();
2338
2339 if (now >= self->next)
2340 {
2341 api_cede (aTHX);
2342 self->next = now + self->every;
2343 }
2344
2345 return PerlIOBuf_flush (aTHX_ f);
2346}
2347
2348static PerlIO_funcs PerlIO_cede =
2349{
2350 sizeof(PerlIO_funcs),
2351 "cede",
2352 sizeof(PerlIOCede),
2353 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2354 PerlIOCede_pushed,
2355 PerlIOBuf_popped,
2356 PerlIOBuf_open,
2357 PerlIOBase_binmode,
2358 PerlIOCede_getarg,
2359 PerlIOBase_fileno,
2360 PerlIOBuf_dup,
2361 PerlIOBuf_read,
2362 PerlIOBuf_unread,
2363 PerlIOBuf_write,
2364 PerlIOBuf_seek,
2365 PerlIOBuf_tell,
2366 PerlIOBuf_close,
2367 PerlIOCede_flush,
2368 PerlIOBuf_fill,
2369 PerlIOBase_eof,
2370 PerlIOBase_error,
2371 PerlIOBase_clearerr,
2372 PerlIOBase_setlinebuf,
2373 PerlIOBuf_get_base,
2374 PerlIOBuf_bufsiz,
2375 PerlIOBuf_get_ptr,
2376 PerlIOBuf_get_cnt,
2377 PerlIOBuf_set_ptrcnt,
2378};
2379
2380/*****************************************************************************/
2381/* Coro::Semaphore & Coro::Signal */
2382
2383static SV *
2384coro_waitarray_new (pTHX_ int count)
2385{
2386 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2387 AV *av = newAV ();
2388 SV **ary;
2389
2390 /* unfortunately, building manually saves memory */
2391 Newx (ary, 2, SV *);
2392 AvALLOC (av) = ary;
2393#if PERL_VERSION_ATLEAST (5,10,0)
2394 AvARRAY (av) = ary;
2395#else
2396 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2397 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2398 SvPVX ((SV *)av) = (char *)ary;
2399#endif
2400 AvMAX (av) = 1;
2401 AvFILLp (av) = 0;
2402 ary [0] = newSViv (count);
2403
2404 return newRV_noinc ((SV *)av);
2405}
2406
2407/* semaphore */
2408
2409static void
2410coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2411{
2412 SV *count_sv = AvARRAY (av)[0];
2413 IV count = SvIVX (count_sv);
2414
2415 count += adjust;
2416 SvIVX (count_sv) = count;
2417
2418 /* now wake up as many waiters as are expected to lock */
2419 while (count > 0 && AvFILLp (av) > 0)
2420 {
2421 SV *cb;
2422
2423 /* swap first two elements so we can shift a waiter */
2424 AvARRAY (av)[0] = AvARRAY (av)[1];
2425 AvARRAY (av)[1] = count_sv;
2426 cb = av_shift (av);
2427
2428 if (SvOBJECT (cb))
2429 {
2430 api_ready (aTHX_ cb);
2431 --count;
2432 }
2433 else if (SvTYPE (cb) == SVt_PVCV)
2434 {
2435 dSP;
2436 PUSHMARK (SP);
2437 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2438 PUTBACK;
2439 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2440 }
2441
2442 SvREFCNT_dec (cb);
2443 }
2444}
2445
2446static void
2447coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2448{
2449 /* call $sem->adjust (0) to possibly wake up some other waiters */
2450 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2451}
2452
2453static int
2454slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2455{
2456 AV *av = (AV *)frame->data;
2457 SV *count_sv = AvARRAY (av)[0];
2458
2459 /* if we are about to throw, don't actually acquire the lock, just throw */
2460 if (CORO_THROW)
2461 return 0;
2462 else if (SvIVX (count_sv) > 0)
2463 {
2464 SvSTATE_current->on_destroy = 0;
2465
2466 if (acquire)
2467 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2468 else
2469 coro_semaphore_adjust (aTHX_ av, 0);
2470
2471 return 0;
2472 }
2473 else
2474 {
2475 int i;
2476 /* if we were woken up but can't down, we look through the whole */
2477 /* waiters list and only add us if we aren't in there already */
2478 /* this avoids some degenerate memory usage cases */
2479
2480 for (i = 1; i <= AvFILLp (av); ++i)
2481 if (AvARRAY (av)[i] == SvRV (coro_current))
2482 return 1;
2483
2484 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2485 return 1;
2486 }
2487}
2488
2489static int
2490slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2491{
2492 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2493}
2494
2495static int
2496slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2497{
2498 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2499}
2500
2501static void
2502slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2503{
2504 AV *av = (AV *)SvRV (arg [0]);
2505
2506 if (SvIVX (AvARRAY (av)[0]) > 0)
2507 {
2508 frame->data = (void *)av;
2509 frame->prepare = prepare_nop;
2510 }
2511 else
2512 {
2513 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2514
2515 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2516 frame->prepare = prepare_schedule;
2517
2518 /* to avoid race conditions when a woken-up coro gets terminated */
2519 /* we arrange for a temporary on_destroy that calls adjust (0) */
2520 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2521 }
2522}
2523
2524static void
2525slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2526{
2527 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2528 frame->check = slf_check_semaphore_down;
2529}
2530
2531static void
2532slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2533{
2534 if (items >= 2)
2535 {
2536 /* callback form */
2537 AV *av = (AV *)SvRV (arg [0]);
2538 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2539
2540 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2541
2542 if (SvIVX (AvARRAY (av)[0]) > 0)
2543 coro_semaphore_adjust (aTHX_ av, 0);
2544
2545 frame->prepare = prepare_nop;
2546 frame->check = slf_check_nop;
2547 }
2548 else
2549 {
2550 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2551 frame->check = slf_check_semaphore_wait;
2552 }
2553}
2554
2555/* signal */
2556
2557static void
2558coro_signal_wake (pTHX_ AV *av, int count)
2559{
2560 SvIVX (AvARRAY (av)[0]) = 0;
2561
2562 /* now signal count waiters */
2563 while (count > 0 && AvFILLp (av) > 0)
2564 {
2565 SV *cb;
2566
2567 /* swap first two elements so we can shift a waiter */
2568 cb = AvARRAY (av)[0];
2569 AvARRAY (av)[0] = AvARRAY (av)[1];
2570 AvARRAY (av)[1] = cb;
2571
2572 cb = av_shift (av);
2573
2574 api_ready (aTHX_ cb);
2575 sv_setiv (cb, 0); /* signal waiter */
2576 SvREFCNT_dec (cb);
2577
2578 --count;
2579 }
2580}
2581
2582static int
2583slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2584{
2585 /* if we are about to throw, also stop waiting */
2586 return SvROK ((SV *)frame->data) && !CORO_THROW;
2587}
2588
2589static void
2590slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2591{
2592 AV *av = (AV *)SvRV (arg [0]);
2593
2594 if (SvIVX (AvARRAY (av)[0]))
2595 {
2596 SvIVX (AvARRAY (av)[0]) = 0;
2597 frame->prepare = prepare_nop;
2598 frame->check = slf_check_nop;
2599 }
2600 else
2601 {
2602 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2603
2604 av_push (av, waiter);
2605
2606 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2607 frame->prepare = prepare_schedule;
2608 frame->check = slf_check_signal_wait;
2609 }
2610}
2611
2612/*****************************************************************************/
2613/* Coro::AIO */
2614
2615#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2616
2617/* helper storage struct */
2618struct io_state
2619{
2620 int errorno;
2621 I32 laststype; /* U16 in 5.10.0 */
2622 int laststatval;
2623 Stat_t statcache;
2624};
2625
2626static void
2627coro_aio_callback (pTHX_ CV *cv)
2628{
2629 dXSARGS;
2630 AV *state = (AV *)GENSUB_ARG;
2631 SV *coro = av_pop (state);
2632 SV *data_sv = newSV (sizeof (struct io_state));
2633
2634 av_extend (state, items - 1);
2635
2636 sv_upgrade (data_sv, SVt_PV);
2637 SvCUR_set (data_sv, sizeof (struct io_state));
2638 SvPOK_only (data_sv);
2639
2640 {
2641 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2642
2643 data->errorno = errno;
2644 data->laststype = PL_laststype;
2645 data->laststatval = PL_laststatval;
2646 data->statcache = PL_statcache;
2647 }
2648
2649 /* now build the result vector out of all the parameters and the data_sv */
2650 {
2651 int i;
2652
2653 for (i = 0; i < items; ++i)
2654 av_push (state, SvREFCNT_inc_NN (ST (i)));
2655 }
2656
2657 av_push (state, data_sv);
2658
2659 api_ready (aTHX_ coro);
2660 SvREFCNT_dec (coro);
2661 SvREFCNT_dec ((AV *)state);
2662}
2663
2664static int
2665slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2666{
2667 AV *state = (AV *)frame->data;
2668
2669 /* if we are about to throw, return early */
2670 /* this does not cancel the aio request, but at least */
2671 /* it quickly returns */
2672 if (CORO_THROW)
2673 return 0;
2674
2675 /* one element that is an RV? repeat! */
2676 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2677 return 1;
2678
2679 /* restore status */
2680 {
2681 SV *data_sv = av_pop (state);
2682 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2683
2684 errno = data->errorno;
2685 PL_laststype = data->laststype;
2686 PL_laststatval = data->laststatval;
2687 PL_statcache = data->statcache;
2688
2689 SvREFCNT_dec (data_sv);
2690 }
2691
2692 /* push result values */
2693 {
2694 dSP;
2695 int i;
2696
2697 EXTEND (SP, AvFILLp (state) + 1);
2698 for (i = 0; i <= AvFILLp (state); ++i)
2699 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2700
2701 PUTBACK;
2702 }
2703
2704 return 0;
2705}
2706
2707static void
2708slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2709{
2710 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2711 SV *coro_hv = SvRV (coro_current);
2712 struct coro *coro = SvSTATE_hv (coro_hv);
2713
2714 /* put our coroutine id on the state arg */
2715 av_push (state, SvREFCNT_inc_NN (coro_hv));
2716
2717 /* first see whether we have a non-zero priority and set it as AIO prio */
2718 if (coro->prio)
2719 {
2720 dSP;
2721
2722 static SV *prio_cv;
2723 static SV *prio_sv;
2724
2725 if (expect_false (!prio_cv))
2726 {
2727 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2728 prio_sv = newSViv (0);
2729 }
2730
2731 PUSHMARK (SP);
2732 sv_setiv (prio_sv, coro->prio);
2733 XPUSHs (prio_sv);
2734
2735 PUTBACK;
2736 call_sv (prio_cv, G_VOID | G_DISCARD);
2737 }
2738
2739 /* now call the original request */
2740 {
2741 dSP;
2742 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2743 int i;
2744
2745 PUSHMARK (SP);
2746
2747 /* first push all args to the stack */
2748 EXTEND (SP, items + 1);
2749
2750 for (i = 0; i < items; ++i)
2751 PUSHs (arg [i]);
2752
2753 /* now push the callback closure */
2754 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2755
2756 /* now call the AIO function - we assume our request is uncancelable */
2757 PUTBACK;
2758 call_sv ((SV *)req, G_VOID | G_DISCARD);
2759 }
2760
2761 /* now that the requets is going, we loop toll we have a result */
2762 frame->data = (void *)state;
2763 frame->prepare = prepare_schedule;
2764 frame->check = slf_check_aio_req;
2765}
2766
2767static void
2768coro_aio_req_xs (pTHX_ CV *cv)
2769{
2770 dXSARGS;
2771
2772 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2773
2774 XSRETURN_EMPTY;
2775}
2776
2777/*****************************************************************************/
2778
2779#if CORO_CLONE
2780# include "clone.c"
2781#endif
1384 2782
1385MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2783MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1386 2784
1387PROTOTYPES: DISABLE 2785PROTOTYPES: DISABLE
1388 2786
1389BOOT: 2787BOOT:
1390{ 2788{
1391#ifdef USE_ITHREADS 2789#ifdef USE_ITHREADS
1392 MUTEX_INIT (&coro_mutex); 2790# if CORO_PTHREAD
2791 coro_thx = PERL_GET_CONTEXT;
2792# endif
1393#endif 2793#endif
1394 BOOT_PAGESIZE; 2794 BOOT_PAGESIZE;
2795
2796 cctx_current = cctx_new_empty ();
2797
2798 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2799 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2800
2801 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2802 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2803 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2804
2805 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2806 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2807 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395 2808
1396 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2809 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397 2810
1398 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2811 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2812 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1400 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 2813 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1401 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 2814 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1402 2815
1403 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1404 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1405 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1406 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1407 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1408 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1409 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1410
1411 main_mainstack = PL_mainstack; 2816 main_mainstack = PL_mainstack;
1412 main_top_env = PL_top_env; 2817 main_top_env = PL_top_env;
1413 2818
1414 while (main_top_env->je_prev) 2819 while (main_top_env->je_prev)
1415 main_top_env = main_top_env->je_prev; 2820 main_top_env = main_top_env->je_prev;
1416 2821
2822 {
2823 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2824
2825 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2826 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2827
2828 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2829 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2830 }
2831
1417 coroapi.ver = CORO_API_VERSION; 2832 coroapi.ver = CORO_API_VERSION;
2833 coroapi.rev = CORO_API_REVISION;
2834
1418 coroapi.transfer = api_transfer; 2835 coroapi.transfer = api_transfer;
2836
2837 coroapi.sv_state = SvSTATE_;
2838 coroapi.execute_slf = api_execute_slf;
2839 coroapi.prepare_nop = prepare_nop;
2840 coroapi.prepare_schedule = prepare_schedule;
2841 coroapi.prepare_cede = prepare_cede;
2842 coroapi.prepare_cede_notself = prepare_cede_notself;
2843
2844 {
2845 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2846
2847 if (!svp) croak ("Time::HiRes is required");
2848 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2849
2850 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2851 }
1419 2852
1420 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2853 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1421} 2854}
1422 2855
1423SV * 2856SV *
1424new (char *klass, ...) 2857new (char *klass, ...)
2858 ALIAS:
2859 Coro::new = 1
1425 CODE: 2860 CODE:
1426{ 2861{
1427 struct coro *coro; 2862 struct coro *coro;
2863 MAGIC *mg;
1428 HV *hv; 2864 HV *hv;
2865 CV *cb;
1429 int i; 2866 int i;
1430 2867
2868 if (items > 1)
2869 {
2870 cb = coro_sv_2cv (aTHX_ ST (1));
2871
2872 if (!ix)
2873 {
2874 if (CvISXSUB (cb))
2875 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2876
2877 if (!CvROOT (cb))
2878 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2879 }
2880 }
2881
1431 Newz (0, coro, 1, struct coro); 2882 Newz (0, coro, 1, struct coro);
1432 coro->args = newAV (); 2883 coro->args = newAV ();
1433 coro->save = CORO_SAVE_DEF;
1434 coro->flags = CF_NEW; 2884 coro->flags = CF_NEW;
1435 2885
1436 if (coro_first) coro_first->prev = coro; 2886 if (coro_first) coro_first->prev = coro;
1437 coro->next = coro_first; 2887 coro->next = coro_first;
1438 coro_first = coro; 2888 coro_first = coro;
1439 2889
1440 coro->hv = hv = newHV (); 2890 coro->hv = hv = newHV ();
1441 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2891 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2892 mg->mg_flags |= MGf_DUP;
1442 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2893 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1443 2894
2895 if (items > 1)
2896 {
2897 av_extend (coro->args, items - 1 + ix - 1);
2898
2899 if (ix)
2900 {
2901 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2902 cb = cv_coro_run;
2903 }
2904
2905 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2906
1444 for (i = 1; i < items; i++) 2907 for (i = 2; i < items; i++)
1445 av_push (coro->args, newSVsv (ST (i))); 2908 av_push (coro->args, newSVsv (ST (i)));
2909 }
1446} 2910}
1447 OUTPUT: 2911 OUTPUT:
1448 RETVAL 2912 RETVAL
1449 2913
1450int 2914void
1451save (SV *coro, int new_save = -1) 2915transfer (...)
2916 PROTOTYPE: $$
1452 CODE: 2917 CODE:
1453 RETVAL = api_save (coro, new_save); 2918 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1454 OUTPUT:
1455 RETVAL
1456
1457int
1458save_also (SV *coro_sv, int save_also)
1459 CODE:
1460{
1461 struct coro *coro = SvSTATE (coro_sv);
1462 RETVAL = coro->save;
1463 coro->save |= save_also;
1464}
1465 OUTPUT:
1466 RETVAL
1467
1468# these not obviously related functions are all rolled into the same xs
1469# function to increase chances that they all will call transfer with the same
1470# stack offset
1471void
1472_set_stacklevel (...)
1473 ALIAS:
1474 Coro::State::transfer = 1
1475 Coro::schedule = 2
1476 Coro::cede = 3
1477 Coro::cede_notself = 4
1478 CODE:
1479{
1480 struct transfer_args ta;
1481
1482 switch (ix)
1483 {
1484 case 0:
1485 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1486 ta.next = 0;
1487 break;
1488
1489 case 1:
1490 if (items != 2)
1491 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1492
1493 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1494 break;
1495
1496 case 2:
1497 prepare_schedule (aTHX_ &ta);
1498 break;
1499
1500 case 3:
1501 prepare_cede (aTHX_ &ta);
1502 break;
1503
1504 case 4:
1505 if (!prepare_cede_notself (aTHX_ &ta))
1506 XSRETURN_EMPTY;
1507
1508 break;
1509 }
1510
1511 BARRIER;
1512 TRANSFER (ta);
1513
1514 if (GIMME_V != G_VOID && ta.next != ta.prev)
1515 XSRETURN_YES;
1516}
1517 2919
1518bool 2920bool
1519_destroy (SV *coro_sv) 2921_destroy (SV *coro_sv)
1520 CODE: 2922 CODE:
1521 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2923 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1522 OUTPUT: 2924 OUTPUT:
1523 RETVAL 2925 RETVAL
1524 2926
1525void 2927void
1526_exit (code) 2928_exit (int code)
1527 int code
1528 PROTOTYPE: $ 2929 PROTOTYPE: $
1529 CODE: 2930 CODE:
1530 _exit (code); 2931 _exit (code);
1531 2932
2933SV *
2934clone (Coro::State coro)
2935 CODE:
2936{
2937#if CORO_CLONE
2938 struct coro *ncoro = coro_clone (aTHX_ coro);
2939 MAGIC *mg;
2940 /* TODO: too much duplication */
2941 ncoro->hv = newHV ();
2942 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2943 mg->mg_flags |= MGf_DUP;
2944 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2945#else
2946 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2947#endif
2948}
2949 OUTPUT:
2950 RETVAL
2951
1532int 2952int
1533cctx_stacksize (int new_stacksize = 0) 2953cctx_stacksize (int new_stacksize = 0)
2954 PROTOTYPE: ;$
1534 CODE: 2955 CODE:
1535 RETVAL = coro_stacksize; 2956 RETVAL = cctx_stacksize;
1536 if (new_stacksize) 2957 if (new_stacksize)
2958 {
1537 coro_stacksize = new_stacksize; 2959 cctx_stacksize = new_stacksize;
2960 ++cctx_gen;
2961 }
1538 OUTPUT: 2962 OUTPUT:
1539 RETVAL 2963 RETVAL
1540 2964
1541int 2965int
2966cctx_max_idle (int max_idle = 0)
2967 PROTOTYPE: ;$
2968 CODE:
2969 RETVAL = cctx_max_idle;
2970 if (max_idle > 1)
2971 cctx_max_idle = max_idle;
2972 OUTPUT:
2973 RETVAL
2974
2975int
1542cctx_count () 2976cctx_count ()
2977 PROTOTYPE:
1543 CODE: 2978 CODE:
1544 RETVAL = cctx_count; 2979 RETVAL = cctx_count;
1545 OUTPUT: 2980 OUTPUT:
1546 RETVAL 2981 RETVAL
1547 2982
1548int 2983int
1549cctx_idle () 2984cctx_idle ()
2985 PROTOTYPE:
1550 CODE: 2986 CODE:
1551 RETVAL = cctx_idle; 2987 RETVAL = cctx_idle;
1552 OUTPUT: 2988 OUTPUT:
1553 RETVAL 2989 RETVAL
1554 2990
1555void 2991void
1556list () 2992list ()
2993 PROTOTYPE:
1557 PPCODE: 2994 PPCODE:
1558{ 2995{
1559 struct coro *coro; 2996 struct coro *coro;
1560 for (coro = coro_first; coro; coro = coro->next) 2997 for (coro = coro_first; coro; coro = coro->next)
1561 if (coro->hv) 2998 if (coro->hv)
… …
1566call (Coro::State coro, SV *coderef) 3003call (Coro::State coro, SV *coderef)
1567 ALIAS: 3004 ALIAS:
1568 eval = 1 3005 eval = 1
1569 CODE: 3006 CODE:
1570{ 3007{
1571 if (coro->mainstack) 3008 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1572 { 3009 {
1573 struct coro temp; 3010 struct coro temp;
1574 Zero (&temp, 1, struct coro);
1575 temp.save = CORO_SAVE_ALL;
1576 3011
1577 if (!(coro->flags & CF_RUNNING)) 3012 if (!(coro->flags & CF_RUNNING))
1578 { 3013 {
3014 PUTBACK;
1579 save_perl (aTHX_ &temp); 3015 save_perl (aTHX_ &temp);
1580 load_perl (aTHX_ coro); 3016 load_perl (aTHX_ coro);
1581 } 3017 }
1582 3018
1583 { 3019 {
1584 dSP; 3020 dSP;
1585 ENTER; 3021 ENTER;
1586 SAVETMPS; 3022 SAVETMPS;
3023 PUTBACK;
3024 PUSHSTACK;
1587 PUSHMARK (SP); 3025 PUSHMARK (SP);
1588 PUTBACK; 3026
1589 if (ix) 3027 if (ix)
1590 eval_sv (coderef, 0); 3028 eval_sv (coderef, 0);
1591 else 3029 else
1592 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3030 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3031
3032 POPSTACK;
1593 SPAGAIN; 3033 SPAGAIN;
1594 FREETMPS; 3034 FREETMPS;
1595 LEAVE; 3035 LEAVE;
1596 PUTBACK; 3036 PUTBACK;
1597 } 3037 }
1598 3038
1599 if (!(coro->flags & CF_RUNNING)) 3039 if (!(coro->flags & CF_RUNNING))
1600 { 3040 {
1601 save_perl (aTHX_ coro); 3041 save_perl (aTHX_ coro);
1602 load_perl (aTHX_ &temp); 3042 load_perl (aTHX_ &temp);
3043 SPAGAIN;
1603 } 3044 }
1604 } 3045 }
1605} 3046}
1606 3047
1607SV * 3048SV *
… …
1616 RETVAL = boolSV (coro->flags & ix); 3057 RETVAL = boolSV (coro->flags & ix);
1617 OUTPUT: 3058 OUTPUT:
1618 RETVAL 3059 RETVAL
1619 3060
1620void 3061void
3062throw (Coro::State self, SV *throw = &PL_sv_undef)
3063 PROTOTYPE: $;$
3064 CODE:
3065{
3066 struct coro *current = SvSTATE_current;
3067 SV **throwp = self == current ? &CORO_THROW : &self->except;
3068 SvREFCNT_dec (*throwp);
3069 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3070}
3071
3072void
1621api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3073api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3074 PROTOTYPE: $;$
3075 C_ARGS: aTHX_ coro, flags
1622 3076
1623SV * 3077SV *
1624has_stack (Coro::State coro) 3078has_cctx (Coro::State coro)
1625 PROTOTYPE: $ 3079 PROTOTYPE: $
1626 CODE: 3080 CODE:
1627 RETVAL = boolSV (!!coro->cctx); 3081 /* maybe manage the running flag differently */
3082 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1628 OUTPUT: 3083 OUTPUT:
1629 RETVAL 3084 RETVAL
1630 3085
1631int 3086int
1632is_traced (Coro::State coro) 3087is_traced (Coro::State coro)
… …
1634 CODE: 3089 CODE:
1635 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3090 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1636 OUTPUT: 3091 OUTPUT:
1637 RETVAL 3092 RETVAL
1638 3093
1639IV 3094UV
1640rss (Coro::State coro) 3095rss (Coro::State coro)
1641 PROTOTYPE: $ 3096 PROTOTYPE: $
1642 ALIAS: 3097 ALIAS:
1643 usecount = 1 3098 usecount = 1
1644 CODE: 3099 CODE:
… …
1648 case 1: RETVAL = coro->usecount; break; 3103 case 1: RETVAL = coro->usecount; break;
1649 } 3104 }
1650 OUTPUT: 3105 OUTPUT:
1651 RETVAL 3106 RETVAL
1652 3107
3108void
3109force_cctx ()
3110 PROTOTYPE:
3111 CODE:
3112 cctx_current->idle_sp = 0;
3113
3114void
3115swap_defsv (Coro::State self)
3116 PROTOTYPE: $
3117 ALIAS:
3118 swap_defav = 1
3119 CODE:
3120 if (!self->slot)
3121 croak ("cannot swap state with coroutine that has no saved state,");
3122 else
3123 {
3124 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3125 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3126
3127 SV *tmp = *src; *src = *dst; *dst = tmp;
3128 }
3129
1653 3130
1654MODULE = Coro::State PACKAGE = Coro 3131MODULE = Coro::State PACKAGE = Coro
1655 3132
1656BOOT: 3133BOOT:
1657{ 3134{
1658 int i; 3135 int i;
1659 3136
1660 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3137 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1661 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3138 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3139 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3140 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3141 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1662 av_async_pool = get_av ("Coro::async_pool", TRUE); 3142 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3143 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3144 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3145 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1663 3146
1664 coro_current = get_sv ("Coro::current", FALSE); 3147 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1665 SvREADONLY_on (coro_current); 3148 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3149 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3150 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1666 3151
1667 coro_stash = gv_stashpv ("Coro", TRUE); 3152 coro_stash = gv_stashpv ("Coro", TRUE);
1668 3153
1669 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3154 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1670 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3155 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1671 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3156 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1672 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3157 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1675 3160
1676 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3161 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1677 coro_ready[i] = newAV (); 3162 coro_ready[i] = newAV ();
1678 3163
1679 { 3164 {
1680 SV *sv = perl_get_sv("Coro::API", 1); 3165 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1681 3166
1682 coroapi.schedule = api_schedule; 3167 coroapi.schedule = api_schedule;
1683 coroapi.save = api_save; 3168 coroapi.schedule_to = api_schedule_to;
1684 coroapi.cede = api_cede; 3169 coroapi.cede = api_cede;
1685 coroapi.cede_notself = api_cede_notself; 3170 coroapi.cede_notself = api_cede_notself;
1686 coroapi.ready = api_ready; 3171 coroapi.ready = api_ready;
1687 coroapi.is_ready = api_is_ready; 3172 coroapi.is_ready = api_is_ready;
1688 coroapi.nready = &coro_nready; 3173 coroapi.nready = coro_nready;
1689 coroapi.current = coro_current; 3174 coroapi.current = coro_current;
1690 3175
1691 GCoroAPI = &coroapi; 3176 /*GCoroAPI = &coroapi;*/
1692 sv_setiv (sv, (IV)&coroapi); 3177 sv_setiv (sv, (IV)&coroapi);
1693 SvREADONLY_on (sv); 3178 SvREADONLY_on (sv);
1694 } 3179 }
1695} 3180}
3181
3182void
3183terminate (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3186
3187void
3188schedule (...)
3189 CODE:
3190 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3191
3192void
3193schedule_to (...)
3194 CODE:
3195 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3196
3197void
3198cede_to (...)
3199 CODE:
3200 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3201
3202void
3203cede (...)
3204 CODE:
3205 CORO_EXECUTE_SLF_XS (slf_init_cede);
3206
3207void
3208cede_notself (...)
3209 CODE:
3210 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3211
3212void
3213_cancel (Coro::State self)
3214 CODE:
3215 coro_state_destroy (aTHX_ self);
3216 coro_call_on_destroy (aTHX_ self);
1696 3217
1697void 3218void
1698_set_current (SV *current) 3219_set_current (SV *current)
1699 PROTOTYPE: $ 3220 PROTOTYPE: $
1700 CODE: 3221 CODE:
1701 SvREFCNT_dec (SvRV (coro_current)); 3222 SvREFCNT_dec (SvRV (coro_current));
1702 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3223 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3224
3225void
3226_set_readyhook (SV *hook)
3227 PROTOTYPE: $
3228 CODE:
3229 SvREFCNT_dec (coro_readyhook);
3230 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1703 3231
1704int 3232int
1705prio (Coro::State coro, int newprio = 0) 3233prio (Coro::State coro, int newprio = 0)
3234 PROTOTYPE: $;$
1706 ALIAS: 3235 ALIAS:
1707 nice = 1 3236 nice = 1
1708 CODE: 3237 CODE:
1709{ 3238{
1710 RETVAL = coro->prio; 3239 RETVAL = coro->prio;
… …
1725 3254
1726SV * 3255SV *
1727ready (SV *self) 3256ready (SV *self)
1728 PROTOTYPE: $ 3257 PROTOTYPE: $
1729 CODE: 3258 CODE:
1730 RETVAL = boolSV (api_ready (self)); 3259 RETVAL = boolSV (api_ready (aTHX_ self));
1731 OUTPUT: 3260 OUTPUT:
1732 RETVAL 3261 RETVAL
1733 3262
1734int 3263int
1735nready (...) 3264nready (...)
… …
1737 CODE: 3266 CODE:
1738 RETVAL = coro_nready; 3267 RETVAL = coro_nready;
1739 OUTPUT: 3268 OUTPUT:
1740 RETVAL 3269 RETVAL
1741 3270
1742# for async_pool speedup
1743void 3271void
1744_pool_1 (SV *cb) 3272_pool_handler (...)
1745 CODE: 3273 CODE:
1746{ 3274 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1747 int i, len;
1748 HV *hv = (HV *)SvRV (coro_current);
1749 AV *defav = GvAV (PL_defgv);
1750 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1751 AV *invoke_av;
1752 3275
1753 if (!invoke) 3276void
1754 croak ("\3terminate\2\n"); 3277async_pool (SV *cv, ...)
3278 PROTOTYPE: &@
3279 PPCODE:
3280{
3281 HV *hv = (HV *)av_pop (av_async_pool);
3282 AV *av = newAV ();
3283 SV *cb = ST (0);
3284 int i;
1755 3285
1756 hv_store (hv, "desc", sizeof ("desc") - 1, 3286 av_extend (av, items - 2);
1757 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 3287 for (i = 1; i < items; ++i)
3288 av_push (av, SvREFCNT_inc_NN (ST (i)));
1758 3289
1759 invoke_av = (AV *)SvRV (invoke); 3290 if ((SV *)hv == &PL_sv_undef)
1760 len = av_len (invoke_av);
1761
1762 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1763
1764 if (len > 0)
1765 { 3291 {
1766 av_fill (defav, len - 1); 3292 PUSHMARK (SP);
1767 for (i = 0; i < len; ++i) 3293 EXTEND (SP, 2);
1768 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3294 PUSHs (sv_Coro);
3295 PUSHs ((SV *)cv_pool_handler);
3296 PUTBACK;
3297 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3298 SPAGAIN;
3299
3300 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1769 } 3301 }
1770 3302
3303 {
3304 struct coro *coro = SvSTATE_hv (hv);
3305
3306 assert (!coro->invoke_cb);
3307 assert (!coro->invoke_av);
3308 coro->invoke_cb = SvREFCNT_inc (cb);
3309 coro->invoke_av = av;
3310 }
3311
3312 api_ready (aTHX_ (SV *)hv);
3313
3314 if (GIMME_V != G_VOID)
3315 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3316 else
1771 SvREFCNT_dec (invoke); 3317 SvREFCNT_dec (hv);
1772} 3318}
1773 3319
1774void 3320SV *
1775_pool_2 (SV *cb) 3321rouse_cb ()
3322 PROTOTYPE:
1776 CODE: 3323 CODE:
1777{ 3324 RETVAL = coro_new_rouse_cb (aTHX);
1778 struct coro *coro = SvSTATE (coro_current);
1779
1780 sv_setsv (cb, &PL_sv_undef);
1781
1782 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1783 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1784 croak ("\3terminate\2\n");
1785
1786 av_clear (GvAV (PL_defgv));
1787 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1788 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1789
1790 coro->save = CORO_SAVE_DEF;
1791 coro->prio = 0;
1792
1793 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1794 api_trace (coro_current, 0);
1795
1796 av_push (av_async_pool, newSVsv (coro_current));
1797}
1798
1799
1800MODULE = Coro::State PACKAGE = Coro::AIO
1801
1802SV *
1803_get_state ()
1804 CODE:
1805{
1806 struct io_state *data;
1807
1808 RETVAL = newSV (sizeof (struct io_state));
1809 data = (struct io_state *)SvPVX (RETVAL);
1810 SvCUR_set (RETVAL, sizeof (struct io_state));
1811 SvPOK_only (RETVAL);
1812
1813 data->errorno = errno;
1814 data->laststype = PL_laststype;
1815 data->laststatval = PL_laststatval;
1816 data->statcache = PL_statcache;
1817}
1818 OUTPUT: 3325 OUTPUT:
1819 RETVAL 3326 RETVAL
1820 3327
1821void 3328void
1822_set_state (char *data_) 3329rouse_wait (...)
1823 PROTOTYPE: $ 3330 PROTOTYPE: ;$
3331 PPCODE:
3332 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3333
3334
3335MODULE = Coro::State PACKAGE = PerlIO::cede
3336
3337BOOT:
3338 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3339
3340
3341MODULE = Coro::State PACKAGE = Coro::Semaphore
3342
3343SV *
3344new (SV *klass, SV *count = 0)
1824 CODE: 3345 CODE:
1825{ 3346 RETVAL = sv_bless (
1826 struct io_state *data = (void *)data_; 3347 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3348 GvSTASH (CvGV (cv))
3349 );
3350 OUTPUT:
3351 RETVAL
1827 3352
1828 errno = data->errorno; 3353# helper for Coro::Channel
1829 PL_laststype = data->laststype; 3354SV *
1830 PL_laststatval = data->laststatval; 3355_alloc (int count)
1831 PL_statcache = data->statcache; 3356 CODE:
1832} 3357 RETVAL = coro_waitarray_new (aTHX_ count);
3358 OUTPUT:
3359 RETVAL
1833 3360
3361SV *
3362count (SV *self)
3363 CODE:
3364 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3365 OUTPUT:
3366 RETVAL
3367
3368void
3369up (SV *self, int adjust = 1)
3370 ALIAS:
3371 adjust = 1
3372 CODE:
3373 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3374
3375void
3376down (...)
3377 CODE:
3378 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3379
3380void
3381wait (...)
3382 CODE:
3383 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3384
3385void
3386try (SV *self)
3387 PPCODE:
3388{
3389 AV *av = (AV *)SvRV (self);
3390 SV *count_sv = AvARRAY (av)[0];
3391 IV count = SvIVX (count_sv);
3392
3393 if (count > 0)
3394 {
3395 --count;
3396 SvIVX (count_sv) = count;
3397 XSRETURN_YES;
3398 }
3399 else
3400 XSRETURN_NO;
3401}
3402
3403void
3404waiters (SV *self)
3405 PPCODE:
3406{
3407 AV *av = (AV *)SvRV (self);
3408 int wcount = AvFILLp (av) + 1 - 1;
3409
3410 if (GIMME_V == G_SCALAR)
3411 XPUSHs (sv_2mortal (newSViv (wcount)));
3412 else
3413 {
3414 int i;
3415 EXTEND (SP, wcount);
3416 for (i = 1; i <= wcount; ++i)
3417 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3418 }
3419}
3420
3421MODULE = Coro::State PACKAGE = Coro::Signal
3422
3423SV *
3424new (SV *klass)
3425 CODE:
3426 RETVAL = sv_bless (
3427 coro_waitarray_new (aTHX_ 0),
3428 GvSTASH (CvGV (cv))
3429 );
3430 OUTPUT:
3431 RETVAL
3432
3433void
3434wait (...)
3435 CODE:
3436 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3437
3438void
3439broadcast (SV *self)
3440 CODE:
3441{
3442 AV *av = (AV *)SvRV (self);
3443 coro_signal_wake (aTHX_ av, AvFILLp (av));
3444}
3445
3446void
3447send (SV *self)
3448 CODE:
3449{
3450 AV *av = (AV *)SvRV (self);
3451
3452 if (AvFILLp (av))
3453 coro_signal_wake (aTHX_ av, 1);
3454 else
3455 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3456}
3457
3458IV
3459awaited (SV *self)
3460 CODE:
3461 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3462 OUTPUT:
3463 RETVAL
3464
3465
3466MODULE = Coro::State PACKAGE = Coro::AnyEvent
3467
3468BOOT:
3469 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3470
3471void
3472_schedule (...)
3473 CODE:
3474{
3475 static int incede;
3476
3477 api_cede_notself (aTHX);
3478
3479 ++incede;
3480 while (coro_nready >= incede && api_cede (aTHX))
3481 ;
3482
3483 sv_setsv (sv_activity, &PL_sv_undef);
3484 if (coro_nready >= incede)
3485 {
3486 PUSHMARK (SP);
3487 PUTBACK;
3488 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3489 }
3490
3491 --incede;
3492}
3493
3494
3495MODULE = Coro::State PACKAGE = Coro::AIO
3496
3497void
3498_register (char *target, char *proto, SV *req)
3499 CODE:
3500{
3501 CV *req_cv = coro_sv_2cv (aTHX_ req);
3502 /* newXSproto doesn't return the CV on 5.8 */
3503 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3504 sv_setpv ((SV *)slf_cv, proto);
3505 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3506}
3507

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