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Comparing Coro/Coro/State.xs (file contents):
Revision 1.182 by root, Wed Oct 3 18:37:48 2007 UTC vs.
Revision 1.335 by root, Thu Dec 4 04:31:41 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 */
136 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
137static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
138 187
139/* async_pool helper stuff */ 188/* async_pool helper stuff */
140static SV *sv_pool_rss; 189static SV *sv_pool_rss;
141static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
142static 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;
143 199
144static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
145static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
146 202
147enum { 203enum {
… …
152 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
153 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
154}; 210};
155 211
156/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
157typedef struct coro_cctx { 213typedef struct coro_cctx
214{
158 struct coro_cctx *next; 215 struct coro_cctx *next;
159 216
160 /* the stack */ 217 /* the stack */
161 void *sptr; 218 void *sptr;
162 size_t ssize; 219 size_t ssize;
… …
165 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166 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 */
167 JMPENV *top_env; 224 JMPENV *top_env;
168 coro_context cctx; 225 coro_context cctx;
169 226
227 U32 gen;
170#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
171 int valgrind_id; 229 int valgrind_id;
172#endif 230#endif
173 unsigned char flags; 231 unsigned char flags;
174} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
175 237
176enum { 238enum {
177 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
178 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
179 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
180 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181}; 243};
182 244
183/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
184struct coro { 246typedef struct
185 /* the c coroutine allocated to this perl coroutine, if any */ 247{
186 coro_cctx *cctx; 248 SV *defsv;
187 249 AV *defav;
188 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
189 AV *args; 251 SV *irsgv;
190 int refcnt; 252 HV *hinthv;
191 int flags; /* CF_ flags */
192
193 /* optionally saved, might be zero */
194 AV *defav; /* @_ */
195 SV *defsv; /* $_ */
196 SV *errsv; /* $@ */
197 GV *deffh; /* default filehandle */
198 SV *irssv; /* $/ */
199 SV *irssv_sv; /* real $/ cache */
200
201#define VAR(name,type) type name; 253#define VAR(name,type) type name;
202# include "state.h" 254# include "state.h"
203#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);
204 276
205 /* statistics */ 277 /* statistics */
206 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
207 279
208 /* coro process data */ 280 /* coro process data */
209 int prio; 281 int prio;
210 //SV *throw; 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
211 284
212 /* async_pool */ 285 /* async_pool */
213 GV *asp_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
214 289
215 /* linked list */ 290 /* linked list */
216 struct coro *next, *prev; 291 struct coro *next, *prev;
217 HV *hv; /* the perl hash associated with this coro, if any */
218}; 292};
219 293
220typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
221typedef 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 */
222 301
223/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
224 303
225#define PRIO_MAX 3 304#define PRIO_MAX 3
226#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
229#define PRIO_IDLE -3 308#define PRIO_IDLE -3
230#define PRIO_MIN -4 309#define PRIO_MIN -4
231 310
232/* for Coro.pm */ 311/* for Coro.pm */
233static SV *coro_current; 312static SV *coro_current;
313static SV *coro_readyhook;
234static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
235static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
236static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
237 318
238/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
239 320
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
240static 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 *
241coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
242{ 414{
243 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
244 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
245 417
246 newpadlist = newAV (); 418 newpadlist = newAV ();
247 AvREAL_off (newpadlist); 419 AvREAL_off (newpadlist);
248#if PERL_VERSION_ATLEAST (5,9,0) 420#if PERL_VERSION_ATLEAST (5,10,0)
249 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 421 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250#else 422#else
251 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252#endif 424#endif
253 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
254 --AvFILLp (padlist); 426 --AvFILLp (padlist);
255 427
256 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
257 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
258 430
259 return newpadlist; 431 return newpadlist;
260} 432}
261 433
262static void 434static void
263free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
264{ 436{
265 /* may be during global destruction */ 437 /* may be during global destruction */
266 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
267 { 439 {
268 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
269 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
270 { 443 {
271 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
272 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
273 { 446 I32 j = AvFILLp (av);
274 SV *sv; 447
275 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
276 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
277
278 SvREFCNT_dec (*svp);
279 }
280 } 453 }
281 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
282 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
283 } 459 }
284} 460}
285 461
286static int 462static int
… …
291 467
292 /* casting is fun. */ 468 /* casting is fun. */
293 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 469 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
294 free_padlist (aTHX_ padlist); 470 free_padlist (aTHX_ padlist);
295 471
296 SvREFCNT_dec (av); 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
297 473
298 return 0; 474 return 0;
299} 475}
300 476
301#define PERL_MAGIC_coro PERL_MAGIC_ext 477static MGVTBL coro_cv_vtbl = {
302 478 0, 0, 0, 0,
303static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 479 coro_cv_free
304 480};
305#define CORO_MAGIC(cv) \
306 SvMAGIC (cv) \
307 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
308 ? SvMAGIC (cv) \
309 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
310 : 0
311
312static struct coro *
313SvSTATE_ (pTHX_ SV *coro)
314{
315 HV *stash;
316 MAGIC *mg;
317
318 if (SvROK (coro))
319 coro = SvRV (coro);
320
321 if (SvTYPE (coro) != SVt_PVHV)
322 croak ("Coro::State object required");
323
324 stash = SvSTASH (coro);
325 if (stash != coro_stash && stash != coro_state_stash)
326 {
327 /* very slow, but rare, check */
328 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329 croak ("Coro::State object required");
330 }
331
332 mg = CORO_MAGIC (coro);
333 return (struct coro *)mg->mg_ptr;
334}
335
336#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337 481
338/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
339static void 483static void
340get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
341{ 485{
342 MAGIC *mg = CORO_MAGIC (cv); 486 MAGIC *mg = CORO_MAGIC_cv (cv);
343 AV *av; 487 AV *av;
344 488
345 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 489 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 490 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347 else 491 else
348 { 492 {
349#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
350 /* this is probably cleaner, but also slower? */ 494 /* this is probably cleaner? but also slower! */
495 /* in practise, it seems to be less stable */
351 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
352 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
353 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
354 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
355#else 500#else
356 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
357#endif 502#endif
358 } 503 }
359} 504}
360 505
361static void 506static void
362put_padlist (pTHX_ CV *cv) 507put_padlist (pTHX_ CV *cv)
363{ 508{
364 MAGIC *mg = CORO_MAGIC (cv); 509 MAGIC *mg = CORO_MAGIC_cv (cv);
365 AV *av; 510 AV *av;
366 511
367 if (!mg) 512 if (expect_false (!mg))
368 { 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
369 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
370 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
371 mg->mg_virtual = &vtbl_coro;
372 mg->mg_obj = (SV *)newAV ();
373 }
374 514
375 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
376 516
377 if (AvFILLp (av) >= AvMAX (av)) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
378 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
379 519
380 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381} 521}
382 522
383/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
384 524
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 GvSV (PL_defgv) = c->defsv;
393 GvAV (PL_defgv) = c->defav;
394 GvSV (PL_errgv) = c->errsv;
395 PL_defoutgv = c->deffh;
396 PL_rs = c->irssv;
397 GvSV (irsgv) = c->irssv_sv;
398 542
399 { 543 {
400 dSP; 544 dSP;
545
401 CV *cv; 546 CV *cv;
402 547
403 /* now do the ugly restore mess */ 548 /* now do the ugly restore mess */
404 while ((cv = (CV *)POPs)) 549 while (expect_true (cv = (CV *)POPs))
405 { 550 {
406 put_padlist (aTHX_ cv); /* mark this padlist as available */ 551 put_padlist (aTHX_ cv); /* mark this padlist as available */
407 CvDEPTH (cv) = PTR2IV (POPs); 552 CvDEPTH (cv) = PTR2IV (POPs);
408 CvPADLIST (cv) = (AV *)POPs; 553 CvPADLIST (cv) = (AV *)POPs;
409 } 554 }
410 555
411 PUTBACK; 556 PUTBACK;
412 } 557 }
558
559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
413} 561}
414 562
415static void 563static void
416save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
417{ 565{
566 c->except = CORO_THROW;
567 c->slf_frame = slf_frame;
568
418 { 569 {
419 dSP; 570 dSP;
420 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
421 PERL_CONTEXT *ccstk = cxstack; 572 PERL_CONTEXT *ccstk = cxstack;
422 PERL_SI *top_si = PL_curstackinfo; 573 PERL_SI *top_si = PL_curstackinfo;
… …
428 579
429 XPUSHs (Nullsv); 580 XPUSHs (Nullsv);
430 /* this loop was inspired by pp_caller */ 581 /* this loop was inspired by pp_caller */
431 for (;;) 582 for (;;)
432 { 583 {
433 while (cxix >= 0) 584 while (expect_true (cxix >= 0))
434 { 585 {
435 PERL_CONTEXT *cx = &ccstk[cxix--]; 586 PERL_CONTEXT *cx = &ccstk[cxix--];
436 587
437 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 588 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
438 { 589 {
439 CV *cv = cx->blk_sub.cv; 590 CV *cv = cx->blk_sub.cv;
440 591
441 if (CvDEPTH (cv)) 592 if (expect_true (CvDEPTH (cv)))
442 { 593 {
443 EXTEND (SP, 3); 594 EXTEND (SP, 3);
444 PUSHs ((SV *)CvPADLIST (cv)); 595 PUSHs ((SV *)CvPADLIST (cv));
445 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 596 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
446 PUSHs ((SV *)cv); 597 PUSHs ((SV *)cv);
447 598
448 CvDEPTH (cv) = 0; 599 CvDEPTH (cv) = 0;
449 get_padlist (aTHX_ cv); 600 get_padlist (aTHX_ cv);
450 } 601 }
451 } 602 }
452 } 603 }
453 604
454 if (top_si->si_type == PERLSI_MAIN) 605 if (expect_true (top_si->si_type == PERLSI_MAIN))
455 break; 606 break;
456 607
457 top_si = top_si->si_prev; 608 top_si = top_si->si_prev;
458 ccstk = top_si->si_cxstack; 609 ccstk = top_si->si_cxstack;
459 cxix = top_si->si_cxix; 610 cxix = top_si->si_cxix;
460 } 611 }
461 612
462 PUTBACK; 613 PUTBACK;
463 } 614 }
464 615
616 /* allocate some space on the context stack for our purposes */
617 /* we manually unroll here, as usually 2 slots is enough */
618 if (SLOT_COUNT >= 1) CXINC;
619 if (SLOT_COUNT >= 2) CXINC;
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 */
627
628 c->mainstack = PL_mainstack;
629
630 {
631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
632
465 c->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
466 c->defsv = DEFSV; 634 slot->defsv = DEFSV;
467 c->errsv = ERRSV; 635 slot->errsv = ERRSV;
468 c->deffh = PL_defoutgv;
469 c->irssv = PL_rs;
470 c->irssv_sv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
471 638
472#define VAR(name,type)c->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
473# include "state.h" 640 # include "state.h"
474#undef VAR 641 #undef VAR
642 }
475} 643}
476 644
477/* 645/*
478 * allocate various perl stacks. This is an exact copy 646 * allocate various perl stacks. This is almost an exact copy
479 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
480 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
481 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
482 */ 650 */
483#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
484# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
485#else 653#else
486static void 654static void
487coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
488{ 656{
489 PL_curstackinfo = new_stackinfo(64, 6); 657 PL_curstackinfo = new_stackinfo(32, 8);
490 PL_curstackinfo->si_type = PERLSI_MAIN; 658 PL_curstackinfo->si_type = PERLSI_MAIN;
491 PL_curstack = PL_curstackinfo->si_stack; 659 PL_curstack = PL_curstackinfo->si_stack;
492 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 660 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
493 661
494 PL_stack_base = AvARRAY(PL_curstack); 662 PL_stack_base = AvARRAY(PL_curstack);
495 PL_stack_sp = PL_stack_base; 663 PL_stack_sp = PL_stack_base;
496 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 664 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
497 665
498 New(50,PL_tmps_stack,64,SV*); 666 New(50,PL_tmps_stack,32,SV*);
499 PL_tmps_floor = -1; 667 PL_tmps_floor = -1;
500 PL_tmps_ix = -1; 668 PL_tmps_ix = -1;
501 PL_tmps_max = 64; 669 PL_tmps_max = 32;
502 670
503 New(54,PL_markstack,16,I32); 671 New(54,PL_markstack,16,I32);
504 PL_markstack_ptr = PL_markstack; 672 PL_markstack_ptr = PL_markstack;
505 PL_markstack_max = PL_markstack + 16; 673 PL_markstack_max = PL_markstack + 16;
506 674
507#ifdef SET_MARK_OFFSET 675#ifdef SET_MARK_OFFSET
508 SET_MARK_OFFSET; 676 SET_MARK_OFFSET;
509#endif 677#endif
510 678
511 New(54,PL_scopestack,16,I32); 679 New(54,PL_scopestack,8,I32);
512 PL_scopestack_ix = 0; 680 PL_scopestack_ix = 0;
513 PL_scopestack_max = 16; 681 PL_scopestack_max = 8;
514 682
515 New(54,PL_savestack,64,ANY); 683 New(54,PL_savestack,24,ANY);
516 PL_savestack_ix = 0; 684 PL_savestack_ix = 0;
517 PL_savestack_max = 64; 685 PL_savestack_max = 24;
518 686
519#if !PERL_VERSION_ATLEAST (5,9,0) 687#if !PERL_VERSION_ATLEAST (5,10,0)
520 New(54,PL_retstack,4,OP*); 688 New(54,PL_retstack,4,OP*);
521 PL_retstack_ix = 0; 689 PL_retstack_ix = 0;
522 PL_retstack_max = 4; 690 PL_retstack_max = 4;
523#endif 691#endif
524} 692}
… …
526 694
527/* 695/*
528 * destroy the stacks, the callchain etc... 696 * destroy the stacks, the callchain etc...
529 */ 697 */
530static void 698static void
531coro_destroy_stacks (pTHX) 699coro_destruct_stacks (pTHX)
532{ 700{
533 while (PL_curstackinfo->si_next) 701 while (PL_curstackinfo->si_next)
534 PL_curstackinfo = PL_curstackinfo->si_next; 702 PL_curstackinfo = PL_curstackinfo->si_next;
535 703
536 while (PL_curstackinfo) 704 while (PL_curstackinfo)
… …
547 715
548 Safefree (PL_tmps_stack); 716 Safefree (PL_tmps_stack);
549 Safefree (PL_markstack); 717 Safefree (PL_markstack);
550 Safefree (PL_scopestack); 718 Safefree (PL_scopestack);
551 Safefree (PL_savestack); 719 Safefree (PL_savestack);
552#if !PERL_VERSION_ATLEAST (5,9,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
553 Safefree (PL_retstack); 721 Safefree (PL_retstack);
554#endif 722#endif
555} 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);
556 733
557static size_t 734static size_t
558coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
559{ 736{
560 size_t rss = sizeof (coro); 737 size_t rss = sizeof (*coro);
561 738
562 if (coro->mainstack) 739 if (coro->mainstack)
563 { 740 {
564 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
565 { 742 {
566 #define VAR(name,type)coro->name = PL_ ## name; 743 #define SYM(sym) PL_ ## sym
567 # include "state.h" 744 CORO_RSS;
568 #undef VAR 745 #undef SYM
569 } 746 }
570 747 else
571 rss += sizeof (coro->curstackinfo); 748 {
572 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 749 #define SYM(sym) coro->slot->sym
573 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
574 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 751 #undef SYM
575 rss += coro->tmps_max * sizeof (SV *); 752 }
576 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
577 rss += coro->scopestack_max * sizeof (I32);
578 rss += coro->savestack_max * sizeof (ANY);
579
580#if !PERL_VERSION_ATLEAST (5,9,0)
581 rss += coro->retstack_max * sizeof (OP *);
582#endif
583 } 753 }
584 754
585 return rss; 755 return rss;
586} 756}
587 757
588/** coroutine stack handling ************************************************/ 758/** coroutine stack handling ************************************************/
589 759
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 tryign to save and restore the hash elements, we just provide
775 * readback here.
776 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
777 * not expecting this to actually change the hook. This is a potential problem
778 * when a schedule happens then, but we ignore this.
779 */
590static void 780static int
781coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
782{
783 const char *s = MgPV_nolen_const (mg);
784
785 if (*s == '_')
786 {
787 SV **svp = 0;
788
789 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
790 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
791
792 if (svp)
793 {
794 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
795 return 0;
796 }
797 }
798
799 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
800}
801
802static int
803coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
804{
805 const char *s = MgPV_nolen_const (mg);
806
807 if (*s == '_')
808 {
809 SV **svp = 0;
810
811 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
812 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
813
814 if (svp)
815 {
816 SV *old = *svp;
817 *svp = 0;
818 SvREFCNT_dec (old);
819 return 0;
820 }
821 }
822
823 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
824}
825
826static int
827coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
828{
829 const char *s = MgPV_nolen_const (mg);
830
831 if (*s == '_')
832 {
833 SV **svp = 0;
834
835 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
836 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
837
838 if (svp)
839 {
840 SV *old = *svp;
841 *svp = newSVsv (sv);
842 SvREFCNT_dec (old);
843 return 0;
844 }
845 }
846
847 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
848}
849
850static void
851prepare_nop (pTHX_ struct coro_transfer_args *ta)
852{
853 /* kind of mega-hacky, but works */
854 ta->next = ta->prev = (struct coro *)ta;
855}
856
857static int
858slf_check_nop (pTHX_ struct CoroSLF *frame)
859{
860 return 0;
861}
862
863static int
864slf_check_repeat (pTHX_ struct CoroSLF *frame)
865{
866 return 1;
867}
868
869static UNOP coro_setup_op;
870
871static void NOINLINE /* noinline to keep it out of the transfer fast path */
591coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
592{ 873{
593 /* 874 /*
594 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
595 */ 876 */
… …
597 878
598 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
599 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
600 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
601 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
602 PL_curpm = 0; 886 PL_curpm = 0;
887 PL_curpad = 0;
603 PL_localizing = 0; 888 PL_localizing = 0;
604 PL_dirty = 0; 889 PL_dirty = 0;
605 PL_restartop = 0; 890 PL_restartop = 0;
891#if PERL_VERSION_ATLEAST (5,10,0)
892 PL_parser = 0;
893#endif
894 PL_hints = 0;
895
896 /* recreate the die/warn hooks */
897 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
898 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
606 899
607 GvSV (PL_defgv) = NEWSV (0, 0); 900 GvSV (PL_defgv) = newSV (0);
608 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
609 GvSV (PL_errgv) = NEWSV (0, 0); 902 GvSV (PL_errgv) = newSV (0);
610 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 903 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
904 GvHV (PL_hintgv) = 0;
611 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
612 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
613 {
614 IO *io = newIO ();
615 PL_defoutgv = newGVgen ("Coro");
616 GvIOp(PL_defoutgv) = io;
617 IoTYPE (io) = IoTYPE_WRONLY;
618 IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
619 IoFLAGS (io) |= IOf_FLUSH;
620 }
621 907
622 { 908 {
623 dSP; 909 dSP;
624 LOGOP myop; 910 UNOP myop;
625 911
626 Zero (&myop, 1, LOGOP); 912 Zero (&myop, 1, UNOP);
627 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
628 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
629 916
630 PUSHMARK (SP); 917 PUSHMARK (SP);
631 XPUSHs (av_shift (GvAV (PL_defgv))); 918 PUSHs ((SV *)coro->startcv);
632 PUTBACK; 919 PUTBACK;
633 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
634 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
635 SPAGAIN;
636 } 922 }
637 923
638 ENTER; /* necessary e.g. for dounwind */ 924 /* this newly created coroutine might be run on an existing cctx which most
639} 925 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
926 */
927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
640 929
930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
931 coro_setup_op.op_next = PL_op;
932 coro_setup_op.op_type = OP_ENTERSUB;
933 coro_setup_op.op_ppaddr = pp_slf;
934 /* no flags etc. required, as an init function won't be called */
935
936 PL_op = (OP *)&coro_setup_op;
937
938 /* copy throw, in case it was set before coro_setup */
939 CORO_THROW = coro->except;
940}
941
641static void 942static void
642coro_destroy (pTHX_ struct coro *coro) 943coro_destruct_perl (pTHX_ struct coro *coro)
643{ 944{
644 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
645 { 946 {
646 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
647 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
662 SvREFCNT_dec (GvAV (PL_defgv)); 963 SvREFCNT_dec (GvAV (PL_defgv));
663 SvREFCNT_dec (GvSV (PL_errgv)); 964 SvREFCNT_dec (GvSV (PL_errgv));
664 SvREFCNT_dec (PL_defoutgv); 965 SvREFCNT_dec (PL_defoutgv);
665 SvREFCNT_dec (PL_rs); 966 SvREFCNT_dec (PL_rs);
666 SvREFCNT_dec (GvSV (irsgv)); 967 SvREFCNT_dec (GvSV (irsgv));
968 SvREFCNT_dec (GvHV (PL_hintgv));
667 969
970 SvREFCNT_dec (PL_diehook);
971 SvREFCNT_dec (PL_warnhook);
972
668 SvREFCNT_dec (coro->asp_deffh); 973 SvREFCNT_dec (coro->saved_deffh);
669 //SvREFCNT_dec (coro->throw); 974 SvREFCNT_dec (coro->rouse_cb);
975 SvREFCNT_dec (coro->invoke_cb);
976 SvREFCNT_dec (coro->invoke_av);
670 977
671 coro_destroy_stacks (aTHX); 978 coro_destruct_stacks (aTHX);
672} 979}
673 980
674static void 981INLINE void
675free_coro_mortal (pTHX) 982free_coro_mortal (pTHX)
676{ 983{
677 if (coro_mortal) 984 if (expect_true (coro_mortal))
678 { 985 {
679 SvREFCNT_dec (coro_mortal); 986 SvREFCNT_dec (coro_mortal);
680 coro_mortal = 0; 987 coro_mortal = 0;
681 } 988 }
682} 989}
… …
684static int 991static int
685runops_trace (pTHX) 992runops_trace (pTHX)
686{ 993{
687 COP *oldcop = 0; 994 COP *oldcop = 0;
688 int oldcxix = -2; 995 int oldcxix = -2;
689 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
690 coro_cctx *cctx = coro->cctx;
691 996
692 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 997 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
693 { 998 {
694 PERL_ASYNC_CHECK (); 999 PERL_ASYNC_CHECK ();
695 1000
696 if (cctx->flags & CC_TRACE_ALL) 1001 if (cctx_current->flags & CC_TRACE_ALL)
697 { 1002 {
698 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1003 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
699 { 1004 {
700 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1005 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
701 SV **bot, **top; 1006 SV **bot, **top;
702 AV *av = newAV (); /* return values */ 1007 AV *av = newAV (); /* return values */
703 SV **cb; 1008 SV **cb;
… …
711 bot = PL_stack_base + cx->blk_oldsp + 1; 1016 bot = PL_stack_base + cx->blk_oldsp + 1;
712 top = cx->blk_gimme == G_ARRAY ? SP + 1 1017 top = cx->blk_gimme == G_ARRAY ? SP + 1
713 : cx->blk_gimme == G_SCALAR ? bot + 1 1018 : cx->blk_gimme == G_SCALAR ? bot + 1
714 : bot; 1019 : bot;
715 1020
1021 av_extend (av, top - bot);
716 while (bot < top) 1022 while (bot < top)
717 av_push (av, SvREFCNT_inc (*bot++)); 1023 av_push (av, SvREFCNT_inc_NN (*bot++));
718 1024
719 PL_runops = RUNOPS_DEFAULT; 1025 PL_runops = RUNOPS_DEFAULT;
720 ENTER; 1026 ENTER;
721 SAVETMPS; 1027 SAVETMPS;
722 EXTEND (SP, 3); 1028 EXTEND (SP, 3);
… …
739 1045
740 if (PL_curcop != &PL_compiling) 1046 if (PL_curcop != &PL_compiling)
741 { 1047 {
742 SV **cb; 1048 SV **cb;
743 1049
744 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1050 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
745 { 1051 {
746 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1052 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
747 1053
748 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1054 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
749 { 1055 {
750 runops_proc_t old_runops = PL_runops;
751 dSP; 1056 dSP;
752 GV *gv = CvGV (cx->blk_sub.cv); 1057 GV *gv = CvGV (cx->blk_sub.cv);
753 SV *fullname = sv_2mortal (newSV (0)); 1058 SV *fullname = sv_2mortal (newSV (0));
754 1059
755 if (isGV (gv)) 1060 if (isGV (gv))
… …
760 SAVETMPS; 1065 SAVETMPS;
761 EXTEND (SP, 3); 1066 EXTEND (SP, 3);
762 PUSHMARK (SP); 1067 PUSHMARK (SP);
763 PUSHs (&PL_sv_yes); 1068 PUSHs (&PL_sv_yes);
764 PUSHs (fullname); 1069 PUSHs (fullname);
765 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1070 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
766 PUTBACK; 1071 PUTBACK;
767 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1072 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
768 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1073 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
769 SPAGAIN; 1074 SPAGAIN;
770 FREETMPS; 1075 FREETMPS;
… …
773 } 1078 }
774 1079
775 oldcxix = cxstack_ix; 1080 oldcxix = cxstack_ix;
776 } 1081 }
777 1082
778 if (cctx->flags & CC_TRACE_LINE) 1083 if (cctx_current->flags & CC_TRACE_LINE)
779 { 1084 {
780 dSP; 1085 dSP;
781 1086
782 PL_runops = RUNOPS_DEFAULT; 1087 PL_runops = RUNOPS_DEFAULT;
783 ENTER; 1088 ENTER;
… …
802 1107
803 TAINT_NOT; 1108 TAINT_NOT;
804 return 0; 1109 return 0;
805} 1110}
806 1111
807/* inject a fake call to Coro::State::_cctx_init into the execution */ 1112static struct CoroSLF cctx_ssl_frame;
808/* _cctx_init should be careful, as it could be called at almost any time */ 1113
809/* during execution of a perl program */ 1114static void
1115slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1116{
1117 ta->prev = 0;
1118}
1119
1120static int
1121slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1122{
1123 *frame = cctx_ssl_frame;
1124
1125 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1126}
1127
1128/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
810static void NOINLINE 1129static void NOINLINE
811prepare_cctx (pTHX_ coro_cctx *cctx) 1130cctx_prepare (pTHX)
812{ 1131{
813 dSP;
814 LOGOP myop;
815
816 PL_top_env = &PL_start_env; 1132 PL_top_env = &PL_start_env;
817 1133
818 if (cctx->flags & CC_TRACE) 1134 if (cctx_current->flags & CC_TRACE)
819 PL_runops = runops_trace; 1135 PL_runops = runops_trace;
820 1136
821 Zero (&myop, 1, LOGOP); 1137 /* we already must be executing an SLF op, there is no other valid way
822 myop.op_next = PL_op; 1138 * that can lead to creation of a new cctx */
823 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1139 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1140 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
824 1141
825 PUSHMARK (SP); 1142 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
826 EXTEND (SP, 2); 1143 cctx_ssl_frame = slf_frame;
827 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1144
828 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1145 slf_frame.prepare = slf_prepare_set_stacklevel;
829 PUTBACK; 1146 slf_frame.check = slf_check_set_stacklevel;
830 PL_op = (OP *)&myop; 1147}
831 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1148
832 SPAGAIN; 1149/* the tail of transfer: execute stuff we can only do after a transfer */
1150INLINE void
1151transfer_tail (pTHX)
1152{
1153 free_coro_mortal (aTHX);
833} 1154}
834 1155
835/* 1156/*
836 * this is a _very_ stripped down perl interpreter ;) 1157 * this is a _very_ stripped down perl interpreter ;)
837 */ 1158 */
838static void 1159static void
839coro_run (void *arg) 1160cctx_run (void *arg)
840{ 1161{
1162#ifdef USE_ITHREADS
1163# if CORO_PTHREAD
1164 PERL_SET_CONTEXT (coro_thx);
1165# endif
1166#endif
1167 {
841 dTHX; 1168 dTHX;
842 1169
843 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1170 /* normally we would need to skip the entersub here */
844 UNLOCK; 1171 /* not doing so will re-execute it, which is exactly what we want */
845
846 /* we now skip the entersub that lead to transfer() */
847 PL_op = PL_op->op_next; 1172 /* PL_nop = PL_nop->op_next */
848 1173
849 /* inject a fake subroutine call to cctx_init */ 1174 /* inject a fake subroutine call to cctx_init */
850 prepare_cctx (aTHX_ (coro_cctx *)arg); 1175 cctx_prepare (aTHX);
851 1176
1177 /* cctx_run is the alternative tail of transfer() */
1178 transfer_tail (aTHX);
1179
852 /* somebody or something will hit me for both perl_run and PL_restartop */ 1180 /* somebody or something will hit me for both perl_run and PL_restartop */
853 PL_restartop = PL_op; 1181 PL_restartop = PL_op;
854 perl_run (PL_curinterp); 1182 perl_run (PL_curinterp);
855
856 /* 1183 /*
1184 * Unfortunately, there is no way to get at the return values of the
1185 * coro body here, as perl_run destroys these
1186 */
1187
1188 /*
857 * If perl-run returns we assume exit() was being called or the coro 1189 * If perl-run returns we assume exit() was being called or the coro
858 * fell off the end, which seems to be the only valid (non-bug) 1190 * fell off the end, which seems to be the only valid (non-bug)
859 * reason for perl_run to return. We try to exit by jumping to the 1191 * reason for perl_run to return. We try to exit by jumping to the
860 * bootstrap-time "top" top_env, as we cannot restore the "main" 1192 * bootstrap-time "top" top_env, as we cannot restore the "main"
861 * coroutine as Coro has no such concept 1193 * coroutine as Coro has no such concept.
1194 * This actually isn't valid with the pthread backend, but OSes requiring
1195 * that backend are too broken to do it in a standards-compliant way.
862 */ 1196 */
863 PL_top_env = main_top_env; 1197 PL_top_env = main_top_env;
864 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1198 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1199 }
865} 1200}
866 1201
867static coro_cctx * 1202static coro_cctx *
868cctx_new () 1203cctx_new ()
869{ 1204{
870 coro_cctx *cctx; 1205 coro_cctx *cctx;
1206
1207 ++cctx_count;
1208 New (0, cctx, 1, coro_cctx);
1209
1210 cctx->gen = cctx_gen;
1211 cctx->flags = 0;
1212 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1213
1214 return cctx;
1215}
1216
1217/* create a new cctx only suitable as source */
1218static coro_cctx *
1219cctx_new_empty ()
1220{
1221 coro_cctx *cctx = cctx_new ();
1222
1223 cctx->sptr = 0;
1224 coro_create (&cctx->cctx, 0, 0, 0, 0);
1225
1226 return cctx;
1227}
1228
1229/* create a new cctx suitable as destination/running a perl interpreter */
1230static coro_cctx *
1231cctx_new_run ()
1232{
1233 coro_cctx *cctx = cctx_new ();
871 void *stack_start; 1234 void *stack_start;
872 size_t stack_size; 1235 size_t stack_size;
873 1236
874 ++cctx_count;
875
876 Newz (0, cctx, 1, coro_cctx);
877
878#if HAVE_MMAP 1237#if HAVE_MMAP
879
880 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1238 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
881 /* mmap supposedly does allocate-on-write for us */ 1239 /* mmap supposedly does allocate-on-write for us */
882 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1240 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
883 1241
884 if (cctx->sptr != (void *)-1) 1242 if (cctx->sptr != (void *)-1)
885 { 1243 {
886# if CORO_STACKGUARD 1244 #if CORO_STACKGUARD
887 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1245 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
888# endif 1246 #endif
889 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1247 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
890 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1248 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
891 cctx->flags |= CC_MAPPED; 1249 cctx->flags |= CC_MAPPED;
892 } 1250 }
893 else 1251 else
894#endif 1252#endif
895 { 1253 {
896 cctx->ssize = coro_stacksize * (long)sizeof (long); 1254 cctx->ssize = cctx_stacksize * (long)sizeof (long);
897 New (0, cctx->sptr, coro_stacksize, long); 1255 New (0, cctx->sptr, cctx_stacksize, long);
898 1256
899 if (!cctx->sptr) 1257 if (!cctx->sptr)
900 { 1258 {
901 perror ("FATAL: unable to allocate stack for coroutine"); 1259 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
902 _exit (EXIT_FAILURE); 1260 _exit (EXIT_FAILURE);
903 } 1261 }
904 1262
905 stack_start = cctx->sptr; 1263 stack_start = cctx->sptr;
906 stack_size = cctx->ssize; 1264 stack_size = cctx->ssize;
907 } 1265 }
908 1266
909 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1267 #if CORO_USE_VALGRIND
1268 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1269 #endif
1270
910 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1271 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
911 1272
912 return cctx; 1273 return cctx;
913} 1274}
914 1275
915static void 1276static void
916cctx_destroy (coro_cctx *cctx) 1277cctx_destroy (coro_cctx *cctx)
917{ 1278{
918 if (!cctx) 1279 if (!cctx)
919 return; 1280 return;
920 1281
1282 assert (cctx != cctx_current);//D temporary
1283
921 --cctx_count; 1284 --cctx_count;
1285 coro_destroy (&cctx->cctx);
922 1286
1287 /* coro_transfer creates new, empty cctx's */
1288 if (cctx->sptr)
1289 {
923#if CORO_USE_VALGRIND 1290 #if CORO_USE_VALGRIND
924 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1291 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
925#endif 1292 #endif
926 1293
927#if HAVE_MMAP 1294#if HAVE_MMAP
928 if (cctx->flags & CC_MAPPED) 1295 if (cctx->flags & CC_MAPPED)
929 munmap (cctx->sptr, cctx->ssize); 1296 munmap (cctx->sptr, cctx->ssize);
930 else 1297 else
931#endif 1298#endif
932 Safefree (cctx->sptr); 1299 Safefree (cctx->sptr);
1300 }
933 1301
934 Safefree (cctx); 1302 Safefree (cctx);
935} 1303}
1304
1305/* wether this cctx should be destructed */
1306#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
936 1307
937static coro_cctx * 1308static coro_cctx *
938cctx_get (pTHX) 1309cctx_get (pTHX)
939{ 1310{
940 while (cctx_first) 1311 while (expect_true (cctx_first))
941 { 1312 {
942 coro_cctx *cctx = cctx_first; 1313 coro_cctx *cctx = cctx_first;
943 cctx_first = cctx->next; 1314 cctx_first = cctx->next;
944 --cctx_idle; 1315 --cctx_idle;
945 1316
946 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1317 if (expect_true (!CCTX_EXPIRED (cctx)))
947 return cctx; 1318 return cctx;
948 1319
949 cctx_destroy (cctx); 1320 cctx_destroy (cctx);
950 } 1321 }
951 1322
952 return cctx_new (); 1323 return cctx_new_run ();
953} 1324}
954 1325
955static void 1326static void
956cctx_put (coro_cctx *cctx) 1327cctx_put (coro_cctx *cctx)
957{ 1328{
1329 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1330
958 /* free another cctx if overlimit */ 1331 /* free another cctx if overlimit */
959 if (cctx_idle >= MAX_IDLE_CCTX) 1332 if (expect_false (cctx_idle >= cctx_max_idle))
960 { 1333 {
961 coro_cctx *first = cctx_first; 1334 coro_cctx *first = cctx_first;
962 cctx_first = first->next; 1335 cctx_first = first->next;
963 --cctx_idle; 1336 --cctx_idle;
964 1337
… …
970 cctx_first = cctx; 1343 cctx_first = cctx;
971} 1344}
972 1345
973/** coroutine switching *****************************************************/ 1346/** coroutine switching *****************************************************/
974 1347
975static void NOINLINE 1348static void
976transfer_check (pTHX_ struct coro *prev, struct coro *next) 1349transfer_check (pTHX_ struct coro *prev, struct coro *next)
977{ 1350{
978 if (prev != next) 1351 /* TODO: throwing up here is considered harmful */
1352
1353 if (expect_true (prev != next))
979 { 1354 {
980 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1355 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
981 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1356 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
982 1357
983 if (next->flags & CF_RUNNING) 1358 if (expect_false (next->flags & CF_RUNNING))
984 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1359 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
985 1360
986 if (next->flags & CF_DESTROYED) 1361 if (expect_false (next->flags & CF_DESTROYED))
987 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1362 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
988 1363
1364#if !PERL_VERSION_ATLEAST (5,10,0)
989 if (PL_lex_state != LEX_NOTPARSING) 1365 if (expect_false (PL_lex_state != LEX_NOTPARSING))
990 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1366 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1367#endif
991 } 1368 }
992} 1369}
993 1370
994/* always use the TRANSFER macro */ 1371/* always use the TRANSFER macro */
995static void NOINLINE 1372static void NOINLINE /* noinline so we have a fixed stackframe */
996transfer (pTHX_ struct coro *prev, struct coro *next) 1373transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
997{ 1374{
998 dSTACKLEVEL; 1375 dSTACKLEVEL;
999 1376
1000 /* sometimes transfer is only called to set idle_sp */ 1377 /* sometimes transfer is only called to set idle_sp */
1001 if (!next) 1378 if (expect_false (!prev))
1002 { 1379 {
1003 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1380 cctx_current->idle_sp = STACKLEVEL;
1004 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1381 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1005 }
1006 else if (prev != next)
1007 { 1382 }
1383 else if (expect_true (prev != next))
1384 {
1008 coro_cctx *prev__cctx; 1385 coro_cctx *cctx_prev;
1009 1386
1010 if (prev->flags & CF_NEW) 1387 if (expect_false (prev->flags & CF_NEW))
1011 { 1388 {
1012 /* create a new empty context */ 1389 /* create a new empty/source context */
1013 Newz (0, prev->cctx, 1, coro_cctx);
1014 prev->flags &= ~CF_NEW; 1390 prev->flags &= ~CF_NEW;
1015 prev->flags |= CF_RUNNING; 1391 prev->flags |= CF_RUNNING;
1016 } 1392 }
1017 1393
1018 prev->flags &= ~CF_RUNNING; 1394 prev->flags &= ~CF_RUNNING;
1019 next->flags |= CF_RUNNING; 1395 next->flags |= CF_RUNNING;
1020 1396
1021 LOCK; 1397 /* first get rid of the old state */
1398 save_perl (aTHX_ prev);
1022 1399
1023 if (next->flags & CF_NEW) 1400 if (expect_false (next->flags & CF_NEW))
1024 { 1401 {
1025 /* need to start coroutine */ 1402 /* need to start coroutine */
1026 next->flags &= ~CF_NEW; 1403 next->flags &= ~CF_NEW;
1027 /* first get rid of the old state */
1028 save_perl (aTHX_ prev);
1029 /* setup coroutine call */ 1404 /* setup coroutine call */
1030 coro_setup (aTHX_ next); 1405 coro_setup (aTHX_ next);
1031 } 1406 }
1032 else 1407 else
1408 load_perl (aTHX_ next);
1409
1410 assert (!prev->cctx);//D temporary
1411
1412 /* possibly untie and reuse the cctx */
1413 if (expect_true (
1414 cctx_current->idle_sp == STACKLEVEL
1415 && !(cctx_current->flags & CC_TRACE)
1416 && !force_cctx
1417 ))
1033 { 1418 {
1034 /* coroutine already started */ 1419 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1035 save_perl (aTHX_ prev); 1420 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1036 load_perl (aTHX_ next); 1421
1422 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1423 /* without this the next cctx_get might destroy the running cctx while still in use */
1424 if (expect_false (CCTX_EXPIRED (cctx_current)))
1425 if (expect_true (!next->cctx))
1426 next->cctx = cctx_get (aTHX);
1427
1428 cctx_put (cctx_current);
1037 } 1429 }
1430 else
1431 prev->cctx = cctx_current;
1038 1432
1039 prev__cctx = prev->cctx; 1433 ++next->usecount;
1040 1434
1041 /* possibly "free" the cctx */ 1435 cctx_prev = cctx_current;
1042 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)) 1436 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1437
1438 next->cctx = 0;
1439
1440 if (expect_false (cctx_prev != cctx_current))
1043 { 1441 {
1044 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1442 cctx_prev->top_env = PL_top_env;
1045 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1443 PL_top_env = cctx_current->top_env;
1046 1444 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1047 prev->cctx = 0;
1048
1049 cctx_put (prev__cctx);
1050 } 1445 }
1051 1446
1052 ++next->usecount; 1447 transfer_tail (aTHX);
1053
1054 if (!next->cctx)
1055 next->cctx = cctx_get (aTHX);
1056
1057 if (prev__cctx != next->cctx)
1058 {
1059 prev__cctx->top_env = PL_top_env;
1060 PL_top_env = next->cctx->top_env;
1061 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1062 }
1063
1064 free_coro_mortal (aTHX);
1065 UNLOCK;
1066 } 1448 }
1067} 1449}
1068 1450
1069struct transfer_args
1070{
1071 struct coro *prev, *next;
1072};
1073
1074#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1451#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1075#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1452#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1076 1453
1077/** high level stuff ********************************************************/ 1454/** high level stuff ********************************************************/
1078 1455
1079static int 1456static int
1080coro_state_destroy (pTHX_ struct coro *coro) 1457coro_state_destroy (pTHX_ struct coro *coro)
1081{ 1458{
1082 if (coro->flags & CF_DESTROYED) 1459 if (coro->flags & CF_DESTROYED)
1083 return 0; 1460 return 0;
1461
1462 if (coro->on_destroy)
1463 coro->on_destroy (aTHX_ coro);
1084 1464
1085 coro->flags |= CF_DESTROYED; 1465 coro->flags |= CF_DESTROYED;
1086 1466
1087 if (coro->flags & CF_READY) 1467 if (coro->flags & CF_READY)
1088 { 1468 {
1089 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1469 /* reduce nready, as destroying a ready coro effectively unreadies it */
1090 /* alternative: look through all ready queues and remove the coro */ 1470 /* alternative: look through all ready queues and remove the coro */
1091 LOCK;
1092 --coro_nready; 1471 --coro_nready;
1093 UNLOCK;
1094 } 1472 }
1095 else 1473 else
1096 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1474 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1097 1475
1098 if (coro->mainstack && coro->mainstack != main_mainstack) 1476 if (coro->mainstack
1477 && coro->mainstack != main_mainstack
1478 && !PL_dirty)
1099 { 1479 {
1100 struct coro temp; 1480 struct coro temp;
1101 1481
1102 if (coro->flags & CF_RUNNING) 1482 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1103 croak ("FATAL: tried to destroy currently running coroutine");
1104 1483
1105 save_perl (aTHX_ &temp); 1484 save_perl (aTHX_ &temp);
1106 load_perl (aTHX_ coro); 1485 load_perl (aTHX_ coro);
1107 1486
1108 coro_destroy (aTHX_ coro); 1487 coro_destruct_perl (aTHX_ coro);
1109 1488
1110 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1489 load_perl (aTHX_ &temp);
1111 1490
1112 coro->mainstack = 0; 1491 coro->slot = 0;
1113 } 1492 }
1114 1493
1115 cctx_destroy (coro->cctx); 1494 cctx_destroy (coro->cctx);
1495 SvREFCNT_dec (coro->startcv);
1116 SvREFCNT_dec (coro->args); 1496 SvREFCNT_dec (coro->args);
1497 SvREFCNT_dec (CORO_THROW);
1117 1498
1118 if (coro->next) coro->next->prev = coro->prev; 1499 if (coro->next) coro->next->prev = coro->prev;
1119 if (coro->prev) coro->prev->next = coro->next; 1500 if (coro->prev) coro->prev->next = coro->next;
1120 if (coro == coro_first) coro_first = coro->next; 1501 if (coro == coro_first) coro_first = coro->next;
1121 1502
… …
1159# define MGf_DUP 0 1540# define MGf_DUP 0
1160#endif 1541#endif
1161}; 1542};
1162 1543
1163static void 1544static void
1164prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1545prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1165{ 1546{
1166 ta->prev = SvSTATE (prev_sv); 1547 ta->prev = SvSTATE (prev_sv);
1167 ta->next = SvSTATE (next_sv); 1548 ta->next = SvSTATE (next_sv);
1168 TRANSFER_CHECK (*ta); 1549 TRANSFER_CHECK (*ta);
1169} 1550}
1170 1551
1171static void 1552static void
1172api_transfer (SV *prev_sv, SV *next_sv) 1553api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1173{ 1554{
1174 dTHX;
1175 struct transfer_args ta; 1555 struct coro_transfer_args ta;
1176 1556
1177 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1557 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1178 TRANSFER (ta); 1558 TRANSFER (ta, 1);
1559}
1560
1561/*****************************************************************************/
1562/* gensub: simple closure generation utility */
1563
1564#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1565
1566/* create a closure from XS, returns a code reference */
1567/* the arg can be accessed via GENSUB_ARG from the callback */
1568/* the callback must use dXSARGS/XSRETURN */
1569static SV *
1570gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1571{
1572 CV *cv = (CV *)newSV (0);
1573
1574 sv_upgrade ((SV *)cv, SVt_PVCV);
1575
1576 CvANON_on (cv);
1577 CvISXSUB_on (cv);
1578 CvXSUB (cv) = xsub;
1579 GENSUB_ARG = arg;
1580
1581 return newRV_noinc ((SV *)cv);
1179} 1582}
1180 1583
1181/** Coro ********************************************************************/ 1584/** Coro ********************************************************************/
1182 1585
1183static void 1586INLINE void
1184coro_enq (pTHX_ SV *coro_sv) 1587coro_enq (pTHX_ struct coro *coro)
1185{ 1588{
1186 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1589 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1187} 1590}
1188 1591
1189static SV * 1592INLINE SV *
1190coro_deq (pTHX_ int min_prio) 1593coro_deq (pTHX)
1191{ 1594{
1192 int prio = PRIO_MAX - PRIO_MIN; 1595 int prio;
1193 1596
1194 min_prio -= PRIO_MIN;
1195 if (min_prio < 0)
1196 min_prio = 0;
1197
1198 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1597 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1199 if (AvFILLp (coro_ready [prio]) >= 0) 1598 if (AvFILLp (coro_ready [prio]) >= 0)
1200 return av_shift (coro_ready [prio]); 1599 return av_shift (coro_ready [prio]);
1201 1600
1202 return 0; 1601 return 0;
1203} 1602}
1204 1603
1205static int 1604static int
1206api_ready (SV *coro_sv) 1605api_ready (pTHX_ SV *coro_sv)
1207{ 1606{
1208 dTHX;
1209 struct coro *coro; 1607 struct coro *coro;
1210 1608 SV *sv_hook;
1211 if (SvROK (coro_sv)) 1609 void (*xs_hook)(void);
1212 coro_sv = SvRV (coro_sv);
1213 1610
1214 coro = SvSTATE (coro_sv); 1611 coro = SvSTATE (coro_sv);
1215 1612
1216 if (coro->flags & CF_READY) 1613 if (coro->flags & CF_READY)
1217 return 0; 1614 return 0;
1218 1615
1219 coro->flags |= CF_READY; 1616 coro->flags |= CF_READY;
1220 1617
1221 LOCK; 1618 sv_hook = coro_nready ? 0 : coro_readyhook;
1222 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1619 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1620
1621 coro_enq (aTHX_ coro);
1223 ++coro_nready; 1622 ++coro_nready;
1224 UNLOCK; 1623
1624 if (sv_hook)
1625 {
1626 dSP;
1627
1628 ENTER;
1629 SAVETMPS;
1630
1631 PUSHMARK (SP);
1632 PUTBACK;
1633 call_sv (sv_hook, G_VOID | G_DISCARD);
1634
1635 FREETMPS;
1636 LEAVE;
1637 }
1638
1639 if (xs_hook)
1640 xs_hook ();
1225 1641
1226 return 1; 1642 return 1;
1227} 1643}
1228 1644
1229static int 1645static int
1230api_is_ready (SV *coro_sv) 1646api_is_ready (pTHX_ SV *coro_sv)
1231{ 1647{
1232 dTHX;
1233 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1648 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1234} 1649}
1235 1650
1236static void 1651/* expects to own a reference to next->hv */
1652INLINE void
1237prepare_schedule (pTHX_ struct transfer_args *ta) 1653prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1238{ 1654{
1239 SV *prev_sv, *next_sv;
1240
1241 for (;;)
1242 {
1243 LOCK;
1244 next_sv = coro_deq (aTHX_ PRIO_MIN);
1245
1246 /* nothing to schedule: call the idle handler */
1247 if (!next_sv)
1248 {
1249 dSP;
1250 UNLOCK;
1251
1252 ENTER;
1253 SAVETMPS;
1254
1255 PUSHMARK (SP);
1256 PUTBACK;
1257 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1258
1259 FREETMPS;
1260 LEAVE;
1261 continue;
1262 }
1263
1264 ta->next = SvSTATE (next_sv);
1265
1266 /* cannot transfer to destroyed coros, skip and look for next */
1267 if (ta->next->flags & CF_DESTROYED)
1268 {
1269 UNLOCK;
1270 SvREFCNT_dec (next_sv);
1271 /* coro_nready is already taken care of by destroy */
1272 continue;
1273 }
1274
1275 --coro_nready;
1276 UNLOCK;
1277 break;
1278 }
1279
1280 /* free this only after the transfer */
1281 prev_sv = SvRV (coro_current); 1655 SV *prev_sv = SvRV (coro_current);
1656
1282 ta->prev = SvSTATE (prev_sv); 1657 ta->prev = SvSTATE_hv (prev_sv);
1658 ta->next = next;
1659
1283 TRANSFER_CHECK (*ta); 1660 TRANSFER_CHECK (*ta);
1284 assert (ta->next->flags & CF_READY); 1661
1285 ta->next->flags &= ~CF_READY;
1286 SvRV_set (coro_current, next_sv); 1662 SvRV_set (coro_current, (SV *)next->hv);
1287 1663
1288 LOCK;
1289 free_coro_mortal (aTHX); 1664 free_coro_mortal (aTHX);
1290 coro_mortal = prev_sv; 1665 coro_mortal = prev_sv;
1291 UNLOCK;
1292} 1666}
1293 1667
1294static void 1668static void
1669prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1670{
1671 for (;;)
1672 {
1673 SV *next_sv = coro_deq (aTHX);
1674
1675 if (expect_true (next_sv))
1676 {
1677 struct coro *next = SvSTATE_hv (next_sv);
1678
1679 /* cannot transfer to destroyed coros, skip and look for next */
1680 if (expect_false (next->flags & CF_DESTROYED))
1681 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1682 else
1683 {
1684 next->flags &= ~CF_READY;
1685 --coro_nready;
1686
1687 prepare_schedule_to (aTHX_ ta, next);
1688 break;
1689 }
1690 }
1691 else
1692 {
1693 /* nothing to schedule: call the idle handler */
1694 if (SvROK (sv_idle)
1695 && SvOBJECT (SvRV (sv_idle)))
1696 {
1697 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1698 api_ready (aTHX_ SvRV (sv_idle));
1699 --coro_nready;
1700 }
1701 else
1702 {
1703 dSP;
1704
1705 ENTER;
1706 SAVETMPS;
1707
1708 PUSHMARK (SP);
1709 PUTBACK;
1710 call_sv (sv_idle, G_VOID | G_DISCARD);
1711
1712 FREETMPS;
1713 LEAVE;
1714 }
1715 }
1716 }
1717}
1718
1719INLINE void
1295prepare_cede (pTHX_ struct transfer_args *ta) 1720prepare_cede (pTHX_ struct coro_transfer_args *ta)
1296{ 1721{
1297 api_ready (coro_current); 1722 api_ready (aTHX_ coro_current);
1298 prepare_schedule (aTHX_ ta); 1723 prepare_schedule (aTHX_ ta);
1299} 1724}
1300 1725
1726INLINE void
1727prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1728{
1729 SV *prev = SvRV (coro_current);
1730
1731 if (coro_nready)
1732 {
1733 prepare_schedule (aTHX_ ta);
1734 api_ready (aTHX_ prev);
1735 }
1736 else
1737 prepare_nop (aTHX_ ta);
1738}
1739
1740static void
1741api_schedule (pTHX)
1742{
1743 struct coro_transfer_args ta;
1744
1745 prepare_schedule (aTHX_ &ta);
1746 TRANSFER (ta, 1);
1747}
1748
1749static void
1750api_schedule_to (pTHX_ SV *coro_sv)
1751{
1752 struct coro_transfer_args ta;
1753 struct coro *next = SvSTATE (coro_sv);
1754
1755 SvREFCNT_inc_NN (coro_sv);
1756 prepare_schedule_to (aTHX_ &ta, next);
1757}
1758
1301static int 1759static int
1302prepare_cede_notself (pTHX_ struct transfer_args *ta) 1760api_cede (pTHX)
1303{ 1761{
1304 if (coro_nready) 1762 struct coro_transfer_args ta;
1305 { 1763
1306 SV *prev = SvRV (coro_current);
1307 prepare_schedule (aTHX_ ta); 1764 prepare_cede (aTHX_ &ta);
1308 api_ready (prev); 1765
1766 if (expect_true (ta.prev != ta.next))
1767 {
1768 TRANSFER (ta, 1);
1309 return 1; 1769 return 1;
1310 } 1770 }
1311 else 1771 else
1312 return 0; 1772 return 0;
1313} 1773}
1314 1774
1315static void
1316api_schedule (void)
1317{
1318 dTHX;
1319 struct transfer_args ta;
1320
1321 prepare_schedule (aTHX_ &ta);
1322 TRANSFER (ta);
1323}
1324
1325static int 1775static int
1326api_cede (void) 1776api_cede_notself (pTHX)
1327{ 1777{
1328 dTHX; 1778 if (coro_nready)
1779 {
1329 struct transfer_args ta; 1780 struct coro_transfer_args ta;
1330 1781
1331 prepare_cede (aTHX_ &ta); 1782 prepare_cede_notself (aTHX_ &ta);
1332
1333 if (ta.prev != ta.next)
1334 {
1335 TRANSFER (ta); 1783 TRANSFER (ta, 1);
1336 return 1; 1784 return 1;
1337 } 1785 }
1338 else 1786 else
1339 return 0; 1787 return 0;
1340} 1788}
1341 1789
1342static int 1790static void
1343api_cede_notself (void)
1344{
1345 dTHX;
1346 struct transfer_args ta;
1347
1348 if (prepare_cede_notself (aTHX_ &ta))
1349 {
1350 TRANSFER (ta);
1351 return 1;
1352 }
1353 else
1354 return 0;
1355}
1356
1357static void
1358api_trace (SV *coro_sv, int flags) 1791api_trace (pTHX_ SV *coro_sv, int flags)
1359{ 1792{
1360 dTHX;
1361 struct coro *coro = SvSTATE (coro_sv); 1793 struct coro *coro = SvSTATE (coro_sv);
1362 1794
1795 if (coro->flags & CF_RUNNING)
1796 croak ("cannot enable tracing on a running coroutine, caught");
1797
1363 if (flags & CC_TRACE) 1798 if (flags & CC_TRACE)
1364 { 1799 {
1365 if (!coro->cctx) 1800 if (!coro->cctx)
1366 coro->cctx = cctx_new (); 1801 coro->cctx = cctx_new_run ();
1367 else if (!(coro->cctx->flags & CC_TRACE)) 1802 else if (!(coro->cctx->flags & CC_TRACE))
1368 croak ("cannot enable tracing on coroutine with custom stack"); 1803 croak ("cannot enable tracing on coroutine with custom stack, caught");
1369 1804
1370 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1805 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1371 } 1806 }
1372 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1807 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1373 { 1808 {
1374 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1809 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1375 1810
1376 if (coro->flags & CF_RUNNING) 1811 if (coro->flags & CF_RUNNING)
1377 PL_runops = RUNOPS_DEFAULT; 1812 PL_runops = RUNOPS_DEFAULT;
1378 else 1813 else
1379 coro->runops = RUNOPS_DEFAULT; 1814 coro->slot->runops = RUNOPS_DEFAULT;
1815 }
1816}
1817
1818static void
1819coro_call_on_destroy (pTHX_ struct coro *coro)
1820{
1821 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1822 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1823
1824 if (on_destroyp)
1825 {
1826 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1827
1828 while (AvFILLp (on_destroy) >= 0)
1829 {
1830 dSP; /* don't disturb outer sp */
1831 SV *cb = av_pop (on_destroy);
1832
1833 PUSHMARK (SP);
1834
1835 if (statusp)
1836 {
1837 int i;
1838 AV *status = (AV *)SvRV (*statusp);
1839 EXTEND (SP, AvFILLp (status) + 1);
1840
1841 for (i = 0; i <= AvFILLp (status); ++i)
1842 PUSHs (AvARRAY (status)[i]);
1843 }
1844
1845 PUTBACK;
1846 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1847 }
1848 }
1849}
1850
1851static void
1852slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 int i;
1855 HV *hv = (HV *)SvRV (coro_current);
1856 AV *av = newAV ();
1857
1858 av_extend (av, items - 1);
1859 for (i = 0; i < items; ++i)
1860 av_push (av, SvREFCNT_inc_NN (arg [i]));
1861
1862 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1863
1864 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1865 api_ready (aTHX_ sv_manager);
1866
1867 frame->prepare = prepare_schedule;
1868 frame->check = slf_check_repeat;
1869}
1870
1871/*****************************************************************************/
1872/* async pool handler */
1873
1874static int
1875slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1876{
1877 HV *hv = (HV *)SvRV (coro_current);
1878 struct coro *coro = (struct coro *)frame->data;
1879
1880 if (!coro->invoke_cb)
1881 return 1; /* loop till we have invoke */
1882 else
1883 {
1884 hv_store (hv, "desc", sizeof ("desc") - 1,
1885 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1886
1887 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1888
1889 {
1890 dSP;
1891 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1892 PUTBACK;
1380 } 1893 }
1894
1895 SvREFCNT_dec (GvAV (PL_defgv));
1896 GvAV (PL_defgv) = coro->invoke_av;
1897 coro->invoke_av = 0;
1898
1899 return 0;
1900 }
1381} 1901}
1902
1903static void
1904slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1905{
1906 HV *hv = (HV *)SvRV (coro_current);
1907 struct coro *coro = SvSTATE_hv ((SV *)hv);
1908
1909 if (expect_true (coro->saved_deffh))
1910 {
1911 /* subsequent iteration */
1912 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1913 coro->saved_deffh = 0;
1914
1915 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1916 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1917 {
1918 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1919 coro->invoke_av = newAV ();
1920
1921 frame->prepare = prepare_nop;
1922 }
1923 else
1924 {
1925 av_clear (GvAV (PL_defgv));
1926 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1927
1928 coro->prio = 0;
1929
1930 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1931 api_trace (aTHX_ coro_current, 0);
1932
1933 frame->prepare = prepare_schedule;
1934 av_push (av_async_pool, SvREFCNT_inc (hv));
1935 }
1936 }
1937 else
1938 {
1939 /* first iteration, simply fall through */
1940 frame->prepare = prepare_nop;
1941 }
1942
1943 frame->check = slf_check_pool_handler;
1944 frame->data = (void *)coro;
1945}
1946
1947/*****************************************************************************/
1948/* rouse callback */
1949
1950#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1951
1952static void
1953coro_rouse_callback (pTHX_ CV *cv)
1954{
1955 dXSARGS;
1956 SV *data = (SV *)GENSUB_ARG;
1957
1958 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1959 {
1960 /* first call, set args */
1961 AV *av = newAV ();
1962 SV *coro = SvRV (data);
1963
1964 SvRV_set (data, (SV *)av);
1965 api_ready (aTHX_ coro);
1966 SvREFCNT_dec (coro);
1967
1968 /* better take a full copy of the arguments */
1969 while (items--)
1970 av_store (av, items, newSVsv (ST (items)));
1971 }
1972
1973 XSRETURN_EMPTY;
1974}
1975
1976static int
1977slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1978{
1979 SV *data = (SV *)frame->data;
1980
1981 if (CORO_THROW)
1982 return 0;
1983
1984 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1985 return 1;
1986
1987 /* now push all results on the stack */
1988 {
1989 dSP;
1990 AV *av = (AV *)SvRV (data);
1991 int i;
1992
1993 EXTEND (SP, AvFILLp (av) + 1);
1994 for (i = 0; i <= AvFILLp (av); ++i)
1995 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1996
1997 /* we have stolen the elements, so ste length to zero and free */
1998 AvFILLp (av) = -1;
1999 av_undef (av);
2000
2001 PUTBACK;
2002 }
2003
2004 return 0;
2005}
2006
2007static void
2008slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2009{
2010 SV *cb;
2011
2012 if (items)
2013 cb = arg [0];
2014 else
2015 {
2016 struct coro *coro = SvSTATE_current;
2017
2018 if (!coro->rouse_cb)
2019 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2020
2021 cb = sv_2mortal (coro->rouse_cb);
2022 coro->rouse_cb = 0;
2023 }
2024
2025 if (!SvROK (cb)
2026 || SvTYPE (SvRV (cb)) != SVt_PVCV
2027 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2028 croak ("Coro::rouse_wait called with illegal callback argument,");
2029
2030 {
2031 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2032 SV *data = (SV *)GENSUB_ARG;
2033
2034 frame->data = (void *)data;
2035 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2036 frame->check = slf_check_rouse_wait;
2037 }
2038}
2039
2040static SV *
2041coro_new_rouse_cb (pTHX)
2042{
2043 HV *hv = (HV *)SvRV (coro_current);
2044 struct coro *coro = SvSTATE_hv (hv);
2045 SV *data = newRV_inc ((SV *)hv);
2046 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2047
2048 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2049 SvREFCNT_dec (data); /* magicext increases the refcount */
2050
2051 SvREFCNT_dec (coro->rouse_cb);
2052 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2053
2054 return cb;
2055}
2056
2057/*****************************************************************************/
2058/* schedule-like-function opcode (SLF) */
2059
2060static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2061static const CV *slf_cv;
2062static SV **slf_argv;
2063static int slf_argc, slf_arga; /* count, allocated */
2064static I32 slf_ax; /* top of stack, for restore */
2065
2066/* this restores the stack in the case we patched the entersub, to */
2067/* recreate the stack frame as perl will on following calls */
2068/* since entersub cleared the stack */
2069static OP *
2070pp_restore (pTHX)
2071{
2072 int i;
2073 SV **SP = PL_stack_base + slf_ax;
2074
2075 PUSHMARK (SP);
2076
2077 EXTEND (SP, slf_argc + 1);
2078
2079 for (i = 0; i < slf_argc; ++i)
2080 PUSHs (sv_2mortal (slf_argv [i]));
2081
2082 PUSHs ((SV *)CvGV (slf_cv));
2083
2084 RETURNOP (slf_restore.op_first);
2085}
2086
2087static void
2088slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2089{
2090 SV **arg = (SV **)slf_frame.data;
2091
2092 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2093}
2094
2095static void
2096slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2097{
2098 if (items != 2)
2099 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2100
2101 frame->prepare = slf_prepare_transfer;
2102 frame->check = slf_check_nop;
2103 frame->data = (void *)arg; /* let's hope it will stay valid */
2104}
2105
2106static void
2107slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2108{
2109 frame->prepare = prepare_schedule;
2110 frame->check = slf_check_nop;
2111}
2112
2113static void
2114slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2115{
2116 struct coro *next = (struct coro *)slf_frame.data;
2117
2118 SvREFCNT_inc_NN (next->hv);
2119 prepare_schedule_to (aTHX_ ta, next);
2120}
2121
2122static void
2123slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2124{
2125 if (!items)
2126 croak ("Coro::schedule_to expects a coroutine argument, caught");
2127
2128 frame->data = (void *)SvSTATE (arg [0]);
2129 frame->prepare = slf_prepare_schedule_to;
2130 frame->check = slf_check_nop;
2131}
2132
2133static void
2134slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2135{
2136 api_ready (aTHX_ SvRV (coro_current));
2137
2138 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2139}
2140
2141static void
2142slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2143{
2144 frame->prepare = prepare_cede;
2145 frame->check = slf_check_nop;
2146}
2147
2148static void
2149slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2150{
2151 frame->prepare = prepare_cede_notself;
2152 frame->check = slf_check_nop;
2153}
2154
2155/*
2156 * these not obviously related functions are all rolled into one
2157 * function to increase chances that they all will call transfer with the same
2158 * stack offset
2159 * SLF stands for "schedule-like-function".
2160 */
2161static OP *
2162pp_slf (pTHX)
2163{
2164 I32 checkmark; /* mark SP to see how many elements check has pushed */
2165
2166 /* set up the slf frame, unless it has already been set-up */
2167 /* the latter happens when a new coro has been started */
2168 /* or when a new cctx was attached to an existing coroutine */
2169 if (expect_true (!slf_frame.prepare))
2170 {
2171 /* first iteration */
2172 dSP;
2173 SV **arg = PL_stack_base + TOPMARK + 1;
2174 int items = SP - arg; /* args without function object */
2175 SV *gv = *sp;
2176
2177 /* do a quick consistency check on the "function" object, and if it isn't */
2178 /* for us, divert to the real entersub */
2179 if (SvTYPE (gv) != SVt_PVGV
2180 || !GvCV (gv)
2181 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2182 return PL_ppaddr[OP_ENTERSUB](aTHX);
2183
2184 if (!(PL_op->op_flags & OPf_STACKED))
2185 {
2186 /* ampersand-form of call, use @_ instead of stack */
2187 AV *av = GvAV (PL_defgv);
2188 arg = AvARRAY (av);
2189 items = AvFILLp (av) + 1;
2190 }
2191
2192 /* now call the init function, which needs to set up slf_frame */
2193 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2194 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2195
2196 /* pop args */
2197 SP = PL_stack_base + POPMARK;
2198
2199 PUTBACK;
2200 }
2201
2202 /* now that we have a slf_frame, interpret it! */
2203 /* we use a callback system not to make the code needlessly */
2204 /* complicated, but so we can run multiple perl coros from one cctx */
2205
2206 do
2207 {
2208 struct coro_transfer_args ta;
2209
2210 slf_frame.prepare (aTHX_ &ta);
2211 TRANSFER (ta, 0);
2212
2213 checkmark = PL_stack_sp - PL_stack_base;
2214 }
2215 while (slf_frame.check (aTHX_ &slf_frame));
2216
2217 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2218
2219 /* exception handling */
2220 if (expect_false (CORO_THROW))
2221 {
2222 SV *exception = sv_2mortal (CORO_THROW);
2223
2224 CORO_THROW = 0;
2225 sv_setsv (ERRSV, exception);
2226 croak (0);
2227 }
2228
2229 /* return value handling - mostly like entersub */
2230 /* make sure we put something on the stack in scalar context */
2231 if (GIMME_V == G_SCALAR)
2232 {
2233 dSP;
2234 SV **bot = PL_stack_base + checkmark;
2235
2236 if (sp == bot) /* too few, push undef */
2237 bot [1] = &PL_sv_undef;
2238 else if (sp != bot + 1) /* too many, take last one */
2239 bot [1] = *sp;
2240
2241 SP = bot + 1;
2242
2243 PUTBACK;
2244 }
2245
2246 return NORMAL;
2247}
2248
2249static void
2250api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2251{
2252 int i;
2253 SV **arg = PL_stack_base + ax;
2254 int items = PL_stack_sp - arg + 1;
2255
2256 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2257
2258 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2259 && PL_op->op_ppaddr != pp_slf)
2260 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2261
2262 CvFLAGS (cv) |= CVf_SLF;
2263 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2264 slf_cv = cv;
2265
2266 /* we patch the op, and then re-run the whole call */
2267 /* we have to put the same argument on the stack for this to work */
2268 /* and this will be done by pp_restore */
2269 slf_restore.op_next = (OP *)&slf_restore;
2270 slf_restore.op_type = OP_CUSTOM;
2271 slf_restore.op_ppaddr = pp_restore;
2272 slf_restore.op_first = PL_op;
2273
2274 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2275
2276 if (PL_op->op_flags & OPf_STACKED)
2277 {
2278 if (items > slf_arga)
2279 {
2280 slf_arga = items;
2281 free (slf_argv);
2282 slf_argv = malloc (slf_arga * sizeof (SV *));
2283 }
2284
2285 slf_argc = items;
2286
2287 for (i = 0; i < items; ++i)
2288 slf_argv [i] = SvREFCNT_inc (arg [i]);
2289 }
2290 else
2291 slf_argc = 0;
2292
2293 PL_op->op_ppaddr = pp_slf;
2294 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2295
2296 PL_op = (OP *)&slf_restore;
2297}
2298
2299/*****************************************************************************/
2300/* PerlIO::cede */
2301
2302typedef struct
2303{
2304 PerlIOBuf base;
2305 NV next, every;
2306} PerlIOCede;
2307
2308static IV
2309PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2310{
2311 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2312
2313 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2314 self->next = nvtime () + self->every;
2315
2316 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2317}
2318
2319static SV *
2320PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2321{
2322 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2323
2324 return newSVnv (self->every);
2325}
2326
2327static IV
2328PerlIOCede_flush (pTHX_ PerlIO *f)
2329{
2330 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2331 double now = nvtime ();
2332
2333 if (now >= self->next)
2334 {
2335 api_cede (aTHX);
2336 self->next = now + self->every;
2337 }
2338
2339 return PerlIOBuf_flush (aTHX_ f);
2340}
2341
2342static PerlIO_funcs PerlIO_cede =
2343{
2344 sizeof(PerlIO_funcs),
2345 "cede",
2346 sizeof(PerlIOCede),
2347 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2348 PerlIOCede_pushed,
2349 PerlIOBuf_popped,
2350 PerlIOBuf_open,
2351 PerlIOBase_binmode,
2352 PerlIOCede_getarg,
2353 PerlIOBase_fileno,
2354 PerlIOBuf_dup,
2355 PerlIOBuf_read,
2356 PerlIOBuf_unread,
2357 PerlIOBuf_write,
2358 PerlIOBuf_seek,
2359 PerlIOBuf_tell,
2360 PerlIOBuf_close,
2361 PerlIOCede_flush,
2362 PerlIOBuf_fill,
2363 PerlIOBase_eof,
2364 PerlIOBase_error,
2365 PerlIOBase_clearerr,
2366 PerlIOBase_setlinebuf,
2367 PerlIOBuf_get_base,
2368 PerlIOBuf_bufsiz,
2369 PerlIOBuf_get_ptr,
2370 PerlIOBuf_get_cnt,
2371 PerlIOBuf_set_ptrcnt,
2372};
2373
2374/*****************************************************************************/
2375/* Coro::Semaphore & Coro::Signal */
2376
2377static SV *
2378coro_waitarray_new (pTHX_ int count)
2379{
2380 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2381 AV *av = newAV ();
2382 SV **ary;
2383
2384 /* unfortunately, building manually saves memory */
2385 Newx (ary, 2, SV *);
2386 AvALLOC (av) = ary;
2387#if PERL_VERSION_ATLEAST (5,10,0)
2388 AvARRAY (av) = ary;
2389#else
2390 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2391 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2392 SvPVX ((SV *)av) = (char *)ary;
2393#endif
2394 AvMAX (av) = 1;
2395 AvFILLp (av) = 0;
2396 ary [0] = newSViv (count);
2397
2398 return newRV_noinc ((SV *)av);
2399}
2400
2401/* semaphore */
2402
2403static void
2404coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2405{
2406 SV *count_sv = AvARRAY (av)[0];
2407 IV count = SvIVX (count_sv);
2408
2409 count += adjust;
2410 SvIVX (count_sv) = count;
2411
2412 /* now wake up as many waiters as are expected to lock */
2413 while (count > 0 && AvFILLp (av) > 0)
2414 {
2415 SV *cb;
2416
2417 /* swap first two elements so we can shift a waiter */
2418 AvARRAY (av)[0] = AvARRAY (av)[1];
2419 AvARRAY (av)[1] = count_sv;
2420 cb = av_shift (av);
2421
2422 if (SvOBJECT (cb))
2423 {
2424 api_ready (aTHX_ cb);
2425 --count;
2426 }
2427 else if (SvTYPE (cb) == SVt_PVCV)
2428 {
2429 dSP;
2430 PUSHMARK (SP);
2431 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2432 PUTBACK;
2433 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2434 }
2435
2436 SvREFCNT_dec (cb);
2437 }
2438}
2439
2440static void
2441coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2442{
2443 /* call $sem->adjust (0) to possibly wake up some other waiters */
2444 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2445}
2446
2447static int
2448slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2449{
2450 AV *av = (AV *)frame->data;
2451 SV *count_sv = AvARRAY (av)[0];
2452
2453 /* if we are about to throw, don't actually acquire the lock, just throw */
2454 if (CORO_THROW)
2455 return 0;
2456 else if (SvIVX (count_sv) > 0)
2457 {
2458 SvSTATE_current->on_destroy = 0;
2459
2460 if (acquire)
2461 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2462 else
2463 coro_semaphore_adjust (aTHX_ av, 0);
2464
2465 return 0;
2466 }
2467 else
2468 {
2469 int i;
2470 /* if we were woken up but can't down, we look through the whole */
2471 /* waiters list and only add us if we aren't in there already */
2472 /* this avoids some degenerate memory usage cases */
2473
2474 for (i = 1; i <= AvFILLp (av); ++i)
2475 if (AvARRAY (av)[i] == SvRV (coro_current))
2476 return 1;
2477
2478 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2479 return 1;
2480 }
2481}
2482
2483static int
2484slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2485{
2486 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2487}
2488
2489static int
2490slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2491{
2492 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2493}
2494
2495static void
2496slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2497{
2498 AV *av = (AV *)SvRV (arg [0]);
2499
2500 if (SvIVX (AvARRAY (av)[0]) > 0)
2501 {
2502 frame->data = (void *)av;
2503 frame->prepare = prepare_nop;
2504 }
2505 else
2506 {
2507 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2508
2509 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2510 frame->prepare = prepare_schedule;
2511
2512 /* to avoid race conditions when a woken-up coro gets terminated */
2513 /* we arrange for a temporary on_destroy that calls adjust (0) */
2514 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2515 }
2516}
2517
2518static void
2519slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2520{
2521 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2522 frame->check = slf_check_semaphore_down;
2523}
2524
2525static void
2526slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2527{
2528 if (items >= 2)
2529 {
2530 /* callback form */
2531 AV *av = (AV *)SvRV (arg [0]);
2532 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2533
2534 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2535
2536 if (SvIVX (AvARRAY (av)[0]) > 0)
2537 coro_semaphore_adjust (aTHX_ av, 0);
2538
2539 frame->prepare = prepare_nop;
2540 frame->check = slf_check_nop;
2541 }
2542 else
2543 {
2544 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2545 frame->check = slf_check_semaphore_wait;
2546 }
2547}
2548
2549/* signal */
2550
2551static void
2552coro_signal_wake (pTHX_ AV *av, int count)
2553{
2554 SvIVX (AvARRAY (av)[0]) = 0;
2555
2556 /* now signal count waiters */
2557 while (count > 0 && AvFILLp (av) > 0)
2558 {
2559 SV *cb;
2560
2561 /* swap first two elements so we can shift a waiter */
2562 cb = AvARRAY (av)[0];
2563 AvARRAY (av)[0] = AvARRAY (av)[1];
2564 AvARRAY (av)[1] = cb;
2565
2566 cb = av_shift (av);
2567
2568 api_ready (aTHX_ cb);
2569 sv_setiv (cb, 0); /* signal waiter */
2570 SvREFCNT_dec (cb);
2571
2572 --count;
2573 }
2574}
2575
2576static int
2577slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2578{
2579 /* if we are about to throw, also stop waiting */
2580 return SvROK ((SV *)frame->data) && !CORO_THROW;
2581}
2582
2583static void
2584slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2585{
2586 AV *av = (AV *)SvRV (arg [0]);
2587
2588 if (SvIVX (AvARRAY (av)[0]))
2589 {
2590 SvIVX (AvARRAY (av)[0]) = 0;
2591 frame->prepare = prepare_nop;
2592 frame->check = slf_check_nop;
2593 }
2594 else
2595 {
2596 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2597
2598 av_push (av, waiter);
2599
2600 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2601 frame->prepare = prepare_schedule;
2602 frame->check = slf_check_signal_wait;
2603 }
2604}
2605
2606/*****************************************************************************/
2607/* Coro::AIO */
2608
2609#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2610
2611/* helper storage struct */
2612struct io_state
2613{
2614 int errorno;
2615 I32 laststype; /* U16 in 5.10.0 */
2616 int laststatval;
2617 Stat_t statcache;
2618};
2619
2620static void
2621coro_aio_callback (pTHX_ CV *cv)
2622{
2623 dXSARGS;
2624 AV *state = (AV *)GENSUB_ARG;
2625 SV *coro = av_pop (state);
2626 SV *data_sv = newSV (sizeof (struct io_state));
2627
2628 av_extend (state, items - 1);
2629
2630 sv_upgrade (data_sv, SVt_PV);
2631 SvCUR_set (data_sv, sizeof (struct io_state));
2632 SvPOK_only (data_sv);
2633
2634 {
2635 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2636
2637 data->errorno = errno;
2638 data->laststype = PL_laststype;
2639 data->laststatval = PL_laststatval;
2640 data->statcache = PL_statcache;
2641 }
2642
2643 /* now build the result vector out of all the parameters and the data_sv */
2644 {
2645 int i;
2646
2647 for (i = 0; i < items; ++i)
2648 av_push (state, SvREFCNT_inc_NN (ST (i)));
2649 }
2650
2651 av_push (state, data_sv);
2652
2653 api_ready (aTHX_ coro);
2654 SvREFCNT_dec (coro);
2655 SvREFCNT_dec ((AV *)state);
2656}
2657
2658static int
2659slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2660{
2661 AV *state = (AV *)frame->data;
2662
2663 /* if we are about to throw, return early */
2664 /* this does not cancel the aio request, but at least */
2665 /* it quickly returns */
2666 if (CORO_THROW)
2667 return 0;
2668
2669 /* one element that is an RV? repeat! */
2670 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2671 return 1;
2672
2673 /* restore status */
2674 {
2675 SV *data_sv = av_pop (state);
2676 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2677
2678 errno = data->errorno;
2679 PL_laststype = data->laststype;
2680 PL_laststatval = data->laststatval;
2681 PL_statcache = data->statcache;
2682
2683 SvREFCNT_dec (data_sv);
2684 }
2685
2686 /* push result values */
2687 {
2688 dSP;
2689 int i;
2690
2691 EXTEND (SP, AvFILLp (state) + 1);
2692 for (i = 0; i <= AvFILLp (state); ++i)
2693 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2694
2695 PUTBACK;
2696 }
2697
2698 return 0;
2699}
2700
2701static void
2702slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2703{
2704 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2705 SV *coro_hv = SvRV (coro_current);
2706 struct coro *coro = SvSTATE_hv (coro_hv);
2707
2708 /* put our coroutine id on the state arg */
2709 av_push (state, SvREFCNT_inc_NN (coro_hv));
2710
2711 /* first see whether we have a non-zero priority and set it as AIO prio */
2712 if (coro->prio)
2713 {
2714 dSP;
2715
2716 static SV *prio_cv;
2717 static SV *prio_sv;
2718
2719 if (expect_false (!prio_cv))
2720 {
2721 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2722 prio_sv = newSViv (0);
2723 }
2724
2725 PUSHMARK (SP);
2726 sv_setiv (prio_sv, coro->prio);
2727 XPUSHs (prio_sv);
2728
2729 PUTBACK;
2730 call_sv (prio_cv, G_VOID | G_DISCARD);
2731 }
2732
2733 /* now call the original request */
2734 {
2735 dSP;
2736 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2737 int i;
2738
2739 PUSHMARK (SP);
2740
2741 /* first push all args to the stack */
2742 EXTEND (SP, items + 1);
2743
2744 for (i = 0; i < items; ++i)
2745 PUSHs (arg [i]);
2746
2747 /* now push the callback closure */
2748 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2749
2750 /* now call the AIO function - we assume our request is uncancelable */
2751 PUTBACK;
2752 call_sv ((SV *)req, G_VOID | G_DISCARD);
2753 }
2754
2755 /* now that the requets is going, we loop toll we have a result */
2756 frame->data = (void *)state;
2757 frame->prepare = prepare_schedule;
2758 frame->check = slf_check_aio_req;
2759}
2760
2761static void
2762coro_aio_req_xs (pTHX_ CV *cv)
2763{
2764 dXSARGS;
2765
2766 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2767
2768 XSRETURN_EMPTY;
2769}
2770
2771/*****************************************************************************/
2772
2773#if CORO_CLONE
2774# include "clone.c"
2775#endif
1382 2776
1383MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2777MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1384 2778
1385PROTOTYPES: DISABLE 2779PROTOTYPES: DISABLE
1386 2780
1387BOOT: 2781BOOT:
1388{ 2782{
1389#ifdef USE_ITHREADS 2783#ifdef USE_ITHREADS
1390 MUTEX_INIT (&coro_mutex); 2784# if CORO_PTHREAD
2785 coro_thx = PERL_GET_CONTEXT;
2786# endif
1391#endif 2787#endif
1392 BOOT_PAGESIZE; 2788 BOOT_PAGESIZE;
1393 2789
2790 cctx_current = cctx_new_empty ();
2791
1394 irsgv = gv_fetchpv ("/", 1, SVt_PV); 2792 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2793 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2794
2795 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2796 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2797 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2798
2799 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2800 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2801 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395 2802
1396 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2803 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397 2804
1398 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2805 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2806 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1404 main_top_env = PL_top_env; 2811 main_top_env = PL_top_env;
1405 2812
1406 while (main_top_env->je_prev) 2813 while (main_top_env->je_prev)
1407 main_top_env = main_top_env->je_prev; 2814 main_top_env = main_top_env->je_prev;
1408 2815
2816 {
2817 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2818
2819 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2820 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2821
2822 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2823 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2824 }
2825
1409 coroapi.ver = CORO_API_VERSION; 2826 coroapi.ver = CORO_API_VERSION;
2827 coroapi.rev = CORO_API_REVISION;
2828
1410 coroapi.transfer = api_transfer; 2829 coroapi.transfer = api_transfer;
2830
2831 coroapi.sv_state = SvSTATE_;
2832 coroapi.execute_slf = api_execute_slf;
2833 coroapi.prepare_nop = prepare_nop;
2834 coroapi.prepare_schedule = prepare_schedule;
2835 coroapi.prepare_cede = prepare_cede;
2836 coroapi.prepare_cede_notself = prepare_cede_notself;
2837
2838 {
2839 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2840
2841 if (!svp) croak ("Time::HiRes is required");
2842 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2843
2844 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2845 }
1411 2846
1412 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2847 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1413} 2848}
1414 2849
1415SV * 2850SV *
1416new (char *klass, ...) 2851new (char *klass, ...)
2852 ALIAS:
2853 Coro::new = 1
1417 CODE: 2854 CODE:
1418{ 2855{
1419 struct coro *coro; 2856 struct coro *coro;
2857 MAGIC *mg;
1420 HV *hv; 2858 HV *hv;
2859 CV *cb;
1421 int i; 2860 int i;
2861
2862 if (items > 1)
2863 {
2864 cb = coro_sv_2cv (aTHX_ ST (1));
2865
2866 if (!ix)
2867 {
2868 if (CvISXSUB (cb))
2869 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2870
2871 if (!CvROOT (cb))
2872 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2873 }
2874 }
1422 2875
1423 Newz (0, coro, 1, struct coro); 2876 Newz (0, coro, 1, struct coro);
1424 coro->args = newAV (); 2877 coro->args = newAV ();
1425 coro->flags = CF_NEW; 2878 coro->flags = CF_NEW;
1426 2879
1427 if (coro_first) coro_first->prev = coro; 2880 if (coro_first) coro_first->prev = coro;
1428 coro->next = coro_first; 2881 coro->next = coro_first;
1429 coro_first = coro; 2882 coro_first = coro;
1430 2883
1431 coro->hv = hv = newHV (); 2884 coro->hv = hv = newHV ();
1432 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2885 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2886 mg->mg_flags |= MGf_DUP;
1433 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2887 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1434 2888
2889 if (items > 1)
2890 {
2891 av_extend (coro->args, items - 1 + ix - 1);
2892
2893 if (ix)
2894 {
2895 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2896 cb = cv_coro_run;
2897 }
2898
2899 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2900
1435 for (i = 1; i < items; i++) 2901 for (i = 2; i < items; i++)
1436 av_push (coro->args, newSVsv (ST (i))); 2902 av_push (coro->args, newSVsv (ST (i)));
2903 }
1437} 2904}
1438 OUTPUT: 2905 OUTPUT:
1439 RETVAL 2906 RETVAL
1440 2907
1441# these not obviously related functions are all rolled into the same xs
1442# function to increase chances that they all will call transfer with the same
1443# stack offset
1444void 2908void
1445_set_stacklevel (...) 2909transfer (...)
1446 ALIAS: 2910 PROTOTYPE: $$
1447 Coro::State::transfer = 1 2911 CODE:
1448 Coro::schedule = 2 2912 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1449 Coro::cede = 3
1450 Coro::cede_notself = 4
1451 CODE:
1452{
1453 struct transfer_args ta;
1454
1455 switch (ix)
1456 {
1457 case 0:
1458 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1459 ta.next = 0;
1460 break;
1461
1462 case 1:
1463 if (items != 2)
1464 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1465
1466 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1467 break;
1468
1469 case 2:
1470 prepare_schedule (aTHX_ &ta);
1471 break;
1472
1473 case 3:
1474 prepare_cede (aTHX_ &ta);
1475 break;
1476
1477 case 4:
1478 if (!prepare_cede_notself (aTHX_ &ta))
1479 XSRETURN_EMPTY;
1480
1481 break;
1482 }
1483
1484 BARRIER;
1485 TRANSFER (ta);
1486
1487 if (GIMME_V != G_VOID && ta.next != ta.prev)
1488 XSRETURN_YES;
1489}
1490 2913
1491bool 2914bool
1492_destroy (SV *coro_sv) 2915_destroy (SV *coro_sv)
1493 CODE: 2916 CODE:
1494 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2917 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1495 OUTPUT: 2918 OUTPUT:
1496 RETVAL 2919 RETVAL
1497 2920
1498void 2921void
1499_exit (code) 2922_exit (int code)
1500 int code
1501 PROTOTYPE: $ 2923 PROTOTYPE: $
1502 CODE: 2924 CODE:
1503 _exit (code); 2925 _exit (code);
1504 2926
2927SV *
2928clone (Coro::State coro)
2929 CODE:
2930{
2931#if CORO_CLONE
2932 struct coro *ncoro = coro_clone (aTHX_ coro);
2933 MAGIC *mg;
2934 /* TODO: too much duplication */
2935 ncoro->hv = newHV ();
2936 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2937 mg->mg_flags |= MGf_DUP;
2938 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2939#else
2940 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2941#endif
2942}
2943 OUTPUT:
2944 RETVAL
2945
1505int 2946int
1506cctx_stacksize (int new_stacksize = 0) 2947cctx_stacksize (int new_stacksize = 0)
2948 PROTOTYPE: ;$
1507 CODE: 2949 CODE:
1508 RETVAL = coro_stacksize; 2950 RETVAL = cctx_stacksize;
1509 if (new_stacksize) 2951 if (new_stacksize)
2952 {
1510 coro_stacksize = new_stacksize; 2953 cctx_stacksize = new_stacksize;
2954 ++cctx_gen;
2955 }
1511 OUTPUT: 2956 OUTPUT:
1512 RETVAL 2957 RETVAL
1513 2958
1514int 2959int
2960cctx_max_idle (int max_idle = 0)
2961 PROTOTYPE: ;$
2962 CODE:
2963 RETVAL = cctx_max_idle;
2964 if (max_idle > 1)
2965 cctx_max_idle = max_idle;
2966 OUTPUT:
2967 RETVAL
2968
2969int
1515cctx_count () 2970cctx_count ()
2971 PROTOTYPE:
1516 CODE: 2972 CODE:
1517 RETVAL = cctx_count; 2973 RETVAL = cctx_count;
1518 OUTPUT: 2974 OUTPUT:
1519 RETVAL 2975 RETVAL
1520 2976
1521int 2977int
1522cctx_idle () 2978cctx_idle ()
2979 PROTOTYPE:
1523 CODE: 2980 CODE:
1524 RETVAL = cctx_idle; 2981 RETVAL = cctx_idle;
1525 OUTPUT: 2982 OUTPUT:
1526 RETVAL 2983 RETVAL
1527 2984
1528void 2985void
1529list () 2986list ()
2987 PROTOTYPE:
1530 PPCODE: 2988 PPCODE:
1531{ 2989{
1532 struct coro *coro; 2990 struct coro *coro;
1533 for (coro = coro_first; coro; coro = coro->next) 2991 for (coro = coro_first; coro; coro = coro->next)
1534 if (coro->hv) 2992 if (coro->hv)
… …
1539call (Coro::State coro, SV *coderef) 2997call (Coro::State coro, SV *coderef)
1540 ALIAS: 2998 ALIAS:
1541 eval = 1 2999 eval = 1
1542 CODE: 3000 CODE:
1543{ 3001{
1544 if (coro->mainstack) 3002 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1545 { 3003 {
1546 struct coro temp; 3004 struct coro temp;
1547 Zero (&temp, 1, struct coro);
1548 3005
1549 if (!(coro->flags & CF_RUNNING)) 3006 if (!(coro->flags & CF_RUNNING))
1550 { 3007 {
3008 PUTBACK;
1551 save_perl (aTHX_ &temp); 3009 save_perl (aTHX_ &temp);
1552 load_perl (aTHX_ coro); 3010 load_perl (aTHX_ coro);
1553 } 3011 }
1554 3012
1555 { 3013 {
1556 dSP; 3014 dSP;
1557 ENTER; 3015 ENTER;
1558 SAVETMPS; 3016 SAVETMPS;
3017 PUTBACK;
3018 PUSHSTACK;
1559 PUSHMARK (SP); 3019 PUSHMARK (SP);
1560 PUTBACK; 3020
1561 if (ix) 3021 if (ix)
1562 eval_sv (coderef, 0); 3022 eval_sv (coderef, 0);
1563 else 3023 else
1564 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3024 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3025
3026 POPSTACK;
1565 SPAGAIN; 3027 SPAGAIN;
1566 FREETMPS; 3028 FREETMPS;
1567 LEAVE; 3029 LEAVE;
1568 PUTBACK; 3030 PUTBACK;
1569 } 3031 }
1570 3032
1571 if (!(coro->flags & CF_RUNNING)) 3033 if (!(coro->flags & CF_RUNNING))
1572 { 3034 {
1573 save_perl (aTHX_ coro); 3035 save_perl (aTHX_ coro);
1574 load_perl (aTHX_ &temp); 3036 load_perl (aTHX_ &temp);
3037 SPAGAIN;
1575 } 3038 }
1576 } 3039 }
1577} 3040}
1578 3041
1579SV * 3042SV *
… …
1588 RETVAL = boolSV (coro->flags & ix); 3051 RETVAL = boolSV (coro->flags & ix);
1589 OUTPUT: 3052 OUTPUT:
1590 RETVAL 3053 RETVAL
1591 3054
1592void 3055void
3056throw (Coro::State self, SV *throw = &PL_sv_undef)
3057 PROTOTYPE: $;$
3058 CODE:
3059{
3060 struct coro *current = SvSTATE_current;
3061 SV **throwp = self == current ? &CORO_THROW : &self->except;
3062 SvREFCNT_dec (*throwp);
3063 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3064}
3065
3066void
1593api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3068 PROTOTYPE: $;$
3069 C_ARGS: aTHX_ coro, flags
1594 3070
1595SV * 3071SV *
1596has_stack (Coro::State coro) 3072has_cctx (Coro::State coro)
1597 PROTOTYPE: $ 3073 PROTOTYPE: $
1598 CODE: 3074 CODE:
1599 RETVAL = boolSV (!!coro->cctx); 3075 /* maybe manage the running flag differently */
3076 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1600 OUTPUT: 3077 OUTPUT:
1601 RETVAL 3078 RETVAL
1602 3079
1603int 3080int
1604is_traced (Coro::State coro) 3081is_traced (Coro::State coro)
… …
1606 CODE: 3083 CODE:
1607 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3084 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1608 OUTPUT: 3085 OUTPUT:
1609 RETVAL 3086 RETVAL
1610 3087
1611IV 3088UV
1612rss (Coro::State coro) 3089rss (Coro::State coro)
1613 PROTOTYPE: $ 3090 PROTOTYPE: $
1614 ALIAS: 3091 ALIAS:
1615 usecount = 1 3092 usecount = 1
1616 CODE: 3093 CODE:
… …
1620 case 1: RETVAL = coro->usecount; break; 3097 case 1: RETVAL = coro->usecount; break;
1621 } 3098 }
1622 OUTPUT: 3099 OUTPUT:
1623 RETVAL 3100 RETVAL
1624 3101
3102void
3103force_cctx ()
3104 PROTOTYPE:
3105 CODE:
3106 cctx_current->idle_sp = 0;
3107
3108void
3109swap_defsv (Coro::State self)
3110 PROTOTYPE: $
3111 ALIAS:
3112 swap_defav = 1
3113 CODE:
3114 if (!self->slot)
3115 croak ("cannot swap state with coroutine that has no saved state,");
3116 else
3117 {
3118 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3119 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3120
3121 SV *tmp = *src; *src = *dst; *dst = tmp;
3122 }
3123
1625 3124
1626MODULE = Coro::State PACKAGE = Coro 3125MODULE = Coro::State PACKAGE = Coro
1627 3126
1628BOOT: 3127BOOT:
1629{ 3128{
1630 int i; 3129 int i;
1631 3130
1632 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3131 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1633 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3132 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3133 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3134 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3135 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1634 av_async_pool = get_av ("Coro::async_pool", TRUE); 3136 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3137 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3138 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3139 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1635 3140
1636 coro_current = get_sv ("Coro::current", FALSE); 3141 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1637 SvREADONLY_on (coro_current); 3142 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3143 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3144 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1638 3145
1639 coro_stash = gv_stashpv ("Coro", TRUE); 3146 coro_stash = gv_stashpv ("Coro", TRUE);
1640 3147
1641 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3148 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1642 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3149 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1643 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3150 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1644 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3151 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1647 3154
1648 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3155 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1649 coro_ready[i] = newAV (); 3156 coro_ready[i] = newAV ();
1650 3157
1651 { 3158 {
1652 SV *sv = perl_get_sv("Coro::API", 1); 3159 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1653 3160
1654 coroapi.schedule = api_schedule; 3161 coroapi.schedule = api_schedule;
3162 coroapi.schedule_to = api_schedule_to;
1655 coroapi.cede = api_cede; 3163 coroapi.cede = api_cede;
1656 coroapi.cede_notself = api_cede_notself; 3164 coroapi.cede_notself = api_cede_notself;
1657 coroapi.ready = api_ready; 3165 coroapi.ready = api_ready;
1658 coroapi.is_ready = api_is_ready; 3166 coroapi.is_ready = api_is_ready;
1659 coroapi.nready = &coro_nready; 3167 coroapi.nready = coro_nready;
1660 coroapi.current = coro_current; 3168 coroapi.current = coro_current;
1661 3169
1662 GCoroAPI = &coroapi; 3170 /*GCoroAPI = &coroapi;*/
1663 sv_setiv (sv, (IV)&coroapi); 3171 sv_setiv (sv, (IV)&coroapi);
1664 SvREADONLY_on (sv); 3172 SvREADONLY_on (sv);
1665 } 3173 }
1666} 3174}
3175
3176void
3177terminate (...)
3178 CODE:
3179 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3180
3181void
3182schedule (...)
3183 CODE:
3184 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3185
3186void
3187schedule_to (...)
3188 CODE:
3189 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3190
3191void
3192cede_to (...)
3193 CODE:
3194 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3195
3196void
3197cede (...)
3198 CODE:
3199 CORO_EXECUTE_SLF_XS (slf_init_cede);
3200
3201void
3202cede_notself (...)
3203 CODE:
3204 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3205
3206void
3207_cancel (Coro::State self)
3208 CODE:
3209 coro_state_destroy (aTHX_ self);
3210 coro_call_on_destroy (aTHX_ self);
1667 3211
1668void 3212void
1669_set_current (SV *current) 3213_set_current (SV *current)
1670 PROTOTYPE: $ 3214 PROTOTYPE: $
1671 CODE: 3215 CODE:
1672 SvREFCNT_dec (SvRV (coro_current)); 3216 SvREFCNT_dec (SvRV (coro_current));
1673 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3217 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3218
3219void
3220_set_readyhook (SV *hook)
3221 PROTOTYPE: $
3222 CODE:
3223 SvREFCNT_dec (coro_readyhook);
3224 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1674 3225
1675int 3226int
1676prio (Coro::State coro, int newprio = 0) 3227prio (Coro::State coro, int newprio = 0)
3228 PROTOTYPE: $;$
1677 ALIAS: 3229 ALIAS:
1678 nice = 1 3230 nice = 1
1679 CODE: 3231 CODE:
1680{ 3232{
1681 RETVAL = coro->prio; 3233 RETVAL = coro->prio;
… …
1696 3248
1697SV * 3249SV *
1698ready (SV *self) 3250ready (SV *self)
1699 PROTOTYPE: $ 3251 PROTOTYPE: $
1700 CODE: 3252 CODE:
1701 RETVAL = boolSV (api_ready (self)); 3253 RETVAL = boolSV (api_ready (aTHX_ self));
1702 OUTPUT: 3254 OUTPUT:
1703 RETVAL 3255 RETVAL
1704 3256
1705int 3257int
1706nready (...) 3258nready (...)
… …
1708 CODE: 3260 CODE:
1709 RETVAL = coro_nready; 3261 RETVAL = coro_nready;
1710 OUTPUT: 3262 OUTPUT:
1711 RETVAL 3263 RETVAL
1712 3264
1713# for async_pool speedup
1714void 3265void
1715_pool_1 (SV *cb) 3266_pool_handler (...)
1716 CODE: 3267 CODE:
1717{ 3268 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1718 struct coro *coro = SvSTATE (coro_current);
1719 HV *hv = (HV *)SvRV (coro_current);
1720 AV *defav = GvAV (PL_defgv);
1721 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1722 AV *invoke_av;
1723 int i, len;
1724 3269
1725 if (!invoke) 3270void
1726 croak ("\3terminate\2\n"); 3271async_pool (SV *cv, ...)
3272 PROTOTYPE: &@
3273 PPCODE:
3274{
3275 HV *hv = (HV *)av_pop (av_async_pool);
3276 AV *av = newAV ();
3277 SV *cb = ST (0);
3278 int i;
1727 3279
1728 SvREFCNT_dec (coro->asp_deffh); 3280 av_extend (av, items - 2);
1729 coro->asp_deffh = SvREFCNT_inc (PL_defoutgv); 3281 for (i = 1; i < items; ++i)
3282 av_push (av, SvREFCNT_inc_NN (ST (i)));
1730 3283
1731 hv_store (hv, "desc", sizeof ("desc") - 1, 3284 if ((SV *)hv == &PL_sv_undef)
1732 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1733
1734 invoke_av = (AV *)SvRV (invoke);
1735 len = av_len (invoke_av);
1736
1737 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1738
1739 if (len > 0)
1740 { 3285 {
1741 av_fill (defav, len - 1); 3286 PUSHMARK (SP);
1742 for (i = 0; i < len; ++i) 3287 EXTEND (SP, 2);
1743 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3288 PUSHs (sv_Coro);
3289 PUSHs ((SV *)cv_pool_handler);
3290 PUTBACK;
3291 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3292 SPAGAIN;
3293
3294 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1744 } 3295 }
1745 3296
3297 {
3298 struct coro *coro = SvSTATE_hv (hv);
3299
3300 assert (!coro->invoke_cb);
3301 assert (!coro->invoke_av);
3302 coro->invoke_cb = SvREFCNT_inc (cb);
3303 coro->invoke_av = av;
3304 }
3305
3306 api_ready (aTHX_ (SV *)hv);
3307
3308 if (GIMME_V != G_VOID)
3309 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3310 else
1746 SvREFCNT_dec (invoke); 3311 SvREFCNT_dec (hv);
1747} 3312}
1748 3313
1749void 3314SV *
1750_pool_2 (SV *cb) 3315rouse_cb ()
3316 PROTOTYPE:
1751 CODE: 3317 CODE:
1752{ 3318 RETVAL = coro_new_rouse_cb (aTHX);
1753 struct coro *coro = SvSTATE (coro_current);
1754
1755 sv_setsv (cb, &PL_sv_undef);
1756
1757 SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->asp_deffh;
1758 coro->asp_deffh = 0;
1759
1760 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1761 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1762 croak ("\3terminate\2\n");
1763
1764 av_clear (GvAV (PL_defgv));
1765 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1767
1768 coro->prio = 0;
1769
1770 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1771 api_trace (coro_current, 0);
1772
1773 av_push (av_async_pool, newSVsv (coro_current));
1774}
1775
1776
1777MODULE = Coro::State PACKAGE = Coro::AIO
1778
1779SV *
1780_get_state ()
1781 CODE:
1782{
1783 struct io_state *data;
1784
1785 RETVAL = newSV (sizeof (struct io_state));
1786 data = (struct io_state *)SvPVX (RETVAL);
1787 SvCUR_set (RETVAL, sizeof (struct io_state));
1788 SvPOK_only (RETVAL);
1789
1790 data->errorno = errno;
1791 data->laststype = PL_laststype;
1792 data->laststatval = PL_laststatval;
1793 data->statcache = PL_statcache;
1794}
1795 OUTPUT: 3319 OUTPUT:
1796 RETVAL 3320 RETVAL
1797 3321
1798void 3322void
1799_set_state (char *data_) 3323rouse_wait (...)
1800 PROTOTYPE: $ 3324 PROTOTYPE: ;$
3325 PPCODE:
3326 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3327
3328
3329MODULE = Coro::State PACKAGE = PerlIO::cede
3330
3331BOOT:
3332 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3333
3334
3335MODULE = Coro::State PACKAGE = Coro::Semaphore
3336
3337SV *
3338new (SV *klass, SV *count = 0)
1801 CODE: 3339 CODE:
1802{ 3340 RETVAL = sv_bless (
1803 struct io_state *data = (void *)data_; 3341 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3342 GvSTASH (CvGV (cv))
3343 );
3344 OUTPUT:
3345 RETVAL
1804 3346
1805 errno = data->errorno; 3347# helper for Coro::Channel
1806 PL_laststype = data->laststype; 3348SV *
1807 PL_laststatval = data->laststatval; 3349_alloc (int count)
1808 PL_statcache = data->statcache; 3350 CODE:
1809} 3351 RETVAL = coro_waitarray_new (aTHX_ count);
3352 OUTPUT:
3353 RETVAL
1810 3354
3355SV *
3356count (SV *self)
3357 CODE:
3358 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3359 OUTPUT:
3360 RETVAL
3361
3362void
3363up (SV *self, int adjust = 1)
3364 ALIAS:
3365 adjust = 1
3366 CODE:
3367 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3368
3369void
3370down (...)
3371 CODE:
3372 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3373
3374void
3375wait (...)
3376 CODE:
3377 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3378
3379void
3380try (SV *self)
3381 PPCODE:
3382{
3383 AV *av = (AV *)SvRV (self);
3384 SV *count_sv = AvARRAY (av)[0];
3385 IV count = SvIVX (count_sv);
3386
3387 if (count > 0)
3388 {
3389 --count;
3390 SvIVX (count_sv) = count;
3391 XSRETURN_YES;
3392 }
3393 else
3394 XSRETURN_NO;
3395}
3396
3397void
3398waiters (SV *self)
3399 PPCODE:
3400{
3401 AV *av = (AV *)SvRV (self);
3402 int wcount = AvFILLp (av) + 1 - 1;
3403
3404 if (GIMME_V == G_SCALAR)
3405 XPUSHs (sv_2mortal (newSViv (wcount)));
3406 else
3407 {
3408 int i;
3409 EXTEND (SP, wcount);
3410 for (i = 1; i <= wcount; ++i)
3411 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3412 }
3413}
3414
3415MODULE = Coro::State PACKAGE = Coro::Signal
3416
3417SV *
3418new (SV *klass)
3419 CODE:
3420 RETVAL = sv_bless (
3421 coro_waitarray_new (aTHX_ 0),
3422 GvSTASH (CvGV (cv))
3423 );
3424 OUTPUT:
3425 RETVAL
3426
3427void
3428wait (...)
3429 CODE:
3430 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3431
3432void
3433broadcast (SV *self)
3434 CODE:
3435{
3436 AV *av = (AV *)SvRV (self);
3437 coro_signal_wake (aTHX_ av, AvFILLp (av));
3438}
3439
3440void
3441send (SV *self)
3442 CODE:
3443{
3444 AV *av = (AV *)SvRV (self);
3445
3446 if (AvFILLp (av))
3447 coro_signal_wake (aTHX_ av, 1);
3448 else
3449 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3450}
3451
3452IV
3453awaited (SV *self)
3454 CODE:
3455 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3456 OUTPUT:
3457 RETVAL
3458
3459
3460MODULE = Coro::State PACKAGE = Coro::AnyEvent
3461
3462BOOT:
3463 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3464
3465void
3466_schedule (...)
3467 CODE:
3468{
3469 static int incede;
3470
3471 api_cede_notself (aTHX);
3472
3473 ++incede;
3474 while (coro_nready >= incede && api_cede (aTHX))
3475 ;
3476
3477 sv_setsv (sv_activity, &PL_sv_undef);
3478 if (coro_nready >= incede)
3479 {
3480 PUSHMARK (SP);
3481 PUTBACK;
3482 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3483 }
3484
3485 --incede;
3486}
3487
3488
3489MODULE = Coro::State PACKAGE = Coro::AIO
3490
3491void
3492_register (char *target, char *proto, SV *req)
3493 CODE:
3494{
3495 CV *req_cv = coro_sv_2cv (aTHX_ req);
3496 /* newXSproto doesn't return the CV on 5.8 */
3497 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3498 sv_setpv ((SV *)slf_cv, proto);
3499 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3500}
3501

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