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Comparing Coro/Coro/State.xs (file contents):
Revision 1.171 by root, Sat Sep 29 19:42:10 2007 UTC vs.
Revision 1.323 by root, Sat Nov 22 06:03:10 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_main_cv == Nullcv)
99 139
100#if __GNUC__ >= 3 140#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
103#else 144#else
104# define attribute(x) 145# define attribute(x)
105# define BARRIER 146# define expect(expr,value) (expr)
147# define INLINE static
106#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
107 152
108#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
109 154
110#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
111 157
112#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 159# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 161# endif
162#endif
120 163
121/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
122struct io_state
123{
124 int errorno;
125 I32 laststype;
126 int laststatval;
127 Stat_t statcache;
128};
129 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 174static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180
181static GV *irsgv; /* $/ */
182static GV *stdoutgv; /* *STDOUT */
183static SV *rv_diehook;
184static SV *rv_warnhook;
185static HV *hv_sig; /* %SIG */
136 186
137/* async_pool helper stuff */ 187/* async_pool helper stuff */
138static SV *sv_pool_rss; 188static SV *sv_pool_rss;
139static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
140static AV *av_async_pool; 191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
195
196/* Coro::AnyEvent */
197static SV *sv_activity;
141 198
142static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 200static int cctx_count, cctx_idle;
144 201
145enum { 202enum {
… …
150 CC_TRACE_LINE = 0x10, /* trace each statement */ 207 CC_TRACE_LINE = 0x10, /* trace each statement */
151 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
152}; 209};
153 210
154/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
155typedef struct coro_cctx { 212typedef struct coro_cctx
213{
156 struct coro_cctx *next; 214 struct coro_cctx *next;
157 215
158 /* the stack */ 216 /* the stack */
159 void *sptr; 217 void *sptr;
160 size_t ssize; 218 size_t ssize;
… …
163 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 221 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
164 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 222 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
165 JMPENV *top_env; 223 JMPENV *top_env;
166 coro_context cctx; 224 coro_context cctx;
167 225
226 U32 gen;
168#if CORO_USE_VALGRIND 227#if CORO_USE_VALGRIND
169 int valgrind_id; 228 int valgrind_id;
170#endif 229#endif
171 unsigned char flags; 230 unsigned char flags;
172} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
173 236
174enum { 237enum {
175 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
176 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
177 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
178 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179}; 242};
180 243
181/* this is a structure representing a perl-level coroutine */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
182struct coro { 245typedef struct
183 /* the c coroutine allocated to this perl coroutine, if any */ 246{
184 coro_cctx *cctx; 247 SV *defsv;
185 248 AV *defav;
186 /* data associated with this coroutine (initial args) */ 249 SV *errsv;
187 AV *args; 250 SV *irsgv;
188 int refcnt;
189 int save; /* CORO_SAVE flags */
190 int flags; /* CF_ flags */
191
192 /* optionally saved, might be zero */
193 AV *defav; /* @_ */
194 SV *defsv; /* $_ */
195 SV *errsv; /* $@ */
196 GV *deffh; /* default filehandle */
197 SV *irssv; /* $/ */
198 SV *irssv_sv; /* real $/ cache */
199
200#define VAR(name,type) type name; 251#define VAR(name,type) type name;
201# include "state.h" 252# include "state.h"
202#undef VAR 253#undef VAR
254} perl_slots;
255
256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
257
258/* this is a structure representing a perl-level coroutine */
259struct coro {
260 /* the C coroutine allocated to this perl coroutine, if any */
261 coro_cctx *cctx;
262
263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
265 AV *mainstack;
266 perl_slots *slot; /* basically the saved sp */
267
268 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
274
275 /* statistics */
276 int usecount; /* number of transfers to this coro */
203 277
204 /* coro process data */ 278 /* coro process data */
205 int prio; 279 int prio;
280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
282
283 /* async_pool */
284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
206 287
207 /* linked list */ 288 /* linked list */
208 struct coro *next, *prev; 289 struct coro *next, *prev;
209 HV *hv; /* the perl hash associated with this coro, if any */
210}; 290};
211 291
212typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
213typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
298static struct CoroSLF slf_frame; /* the current slf frame */
214 299
215/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
216 301
217#define PRIO_MAX 3 302#define PRIO_MAX 3
218#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
221#define PRIO_IDLE -3 306#define PRIO_IDLE -3
222#define PRIO_MIN -4 307#define PRIO_MIN -4
223 308
224/* for Coro.pm */ 309/* for Coro.pm */
225static SV *coro_current; 310static SV *coro_current;
311static SV *coro_readyhook;
226static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
227static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
228static struct coro *coro_first; 314static struct coro *coro_first;
315#define coro_nready coroapi.nready
229 316
230/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
231 318
319static SV *
320coro_get_sv (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_sv (name, create);
325#endif
326 return get_sv (name, create);
327}
328
232static AV * 329static AV *
330coro_get_av (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_av (name, create);
335#endif
336 return get_av (name, create);
337}
338
339static HV *
340coro_get_hv (pTHX_ const char *name, int create)
341{
342#if PERL_VERSION_ATLEAST (5,10,0)
343 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
344 get_hv (name, create);
345#endif
346 return get_hv (name, create);
347}
348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
358static AV *
233coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
234{ 360{
235 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
236 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
237 363
238 newpadlist = newAV (); 364 newpadlist = newAV ();
239 AvREAL_off (newpadlist); 365 AvREAL_off (newpadlist);
240#if PERL_VERSION_ATLEAST (5,9,0) 366#if PERL_VERSION_ATLEAST (5,10,0)
241 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 367 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
242#else 368#else
243 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
244#endif 370#endif
245 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 371 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
246 --AvFILLp (padlist); 372 --AvFILLp (padlist);
247 373
248 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 374 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
249 av_store (newpadlist, 1, (SV *)newpad); 375 av_store (newpadlist, 1, (SV *)newpad);
250 376
251 return newpadlist; 377 return newpadlist;
252} 378}
253 379
… …
283 409
284 /* casting is fun. */ 410 /* casting is fun. */
285 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 411 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
286 free_padlist (aTHX_ padlist); 412 free_padlist (aTHX_ padlist);
287 413
288 SvREFCNT_dec (av); 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
289 415
290 return 0; 416 return 0;
291} 417}
292 418
419#define CORO_MAGIC_type_cv 26
293#define PERL_MAGIC_coro PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
294 421
295static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 422static MGVTBL coro_cv_vtbl = {
423 0, 0, 0, 0,
424 coro_cv_free
425};
296 426
297#define CORO_MAGIC(cv) \ 427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
298 SvMAGIC (cv) \ 429 ? SvMAGIC (sv) \
299 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 430 : mg_find (sv, type))
300 ? SvMAGIC (cv) \ 431
301 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 432#define CORO_MAGIC(sv, type) \
433 (expect_true (SvMAGIC (sv)) \
434 ? CORO_MAGIC_NN (sv, type) \
302 : 0 435 : 0)
303 436
304static struct coro * 437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
439
440INLINE struct coro *
305SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
306{ 442{
307 HV *stash; 443 HV *stash;
308 MAGIC *mg; 444 MAGIC *mg;
309 445
310 if (SvROK (coro)) 446 if (SvROK (coro))
311 coro = SvRV (coro); 447 coro = SvRV (coro);
312 448
449 if (expect_false (SvTYPE (coro) != SVt_PVHV))
450 croak ("Coro::State object required");
451
313 stash = SvSTASH (coro); 452 stash = SvSTASH (coro);
314 if (stash != coro_stash && stash != coro_state_stash) 453 if (expect_false (stash != coro_stash && stash != coro_state_stash))
315 { 454 {
316 /* very slow, but rare, check */ 455 /* very slow, but rare, check */
317 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 456 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
318 croak ("Coro::State object required"); 457 croak ("Coro::State object required");
319 } 458 }
320 459
321 mg = CORO_MAGIC (coro); 460 mg = CORO_MAGIC_state (coro);
322 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
323} 462}
324 463
325#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
326 465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
469
327/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
328static void 471static void
329get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
330{ 473{
331 MAGIC *mg = CORO_MAGIC (cv); 474 MAGIC *mg = CORO_MAGIC_cv (cv);
332 AV *av; 475 AV *av;
333 476
334 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 477 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
335 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 478 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
336 else 479 else
337 { 480 {
338#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
339 /* this is probably cleaner, but also slower? */ 482 /* this is probably cleaner? but also slower! */
483 /* in practise, it seems to be less stable */
340 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
341 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
342 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
343 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
344#else 488#else
345 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
346#endif 490#endif
347 } 491 }
348} 492}
349 493
350static void 494static void
351put_padlist (pTHX_ CV *cv) 495put_padlist (pTHX_ CV *cv)
352{ 496{
353 MAGIC *mg = CORO_MAGIC (cv); 497 MAGIC *mg = CORO_MAGIC_cv (cv);
354 AV *av; 498 AV *av;
355 499
356 if (!mg) 500 if (expect_false (!mg))
357 { 501 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
358 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
359 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
360 mg->mg_virtual = &vtbl_coro;
361 mg->mg_obj = (SV *)newAV ();
362 }
363 502
364 av = (AV *)mg->mg_obj; 503 av = (AV *)mg->mg_obj;
365 504
366 if (AvFILLp (av) >= AvMAX (av)) 505 if (expect_false (AvFILLp (av) >= AvMAX (av)))
367 av_extend (av, AvMAX (av) + 1); 506 av_extend (av, AvMAX (av) + 1);
368 507
369 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 508 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
370} 509}
371 510
372/** load & save, init *******************************************************/ 511/** load & save, init *******************************************************/
373 512
374#define SB do {
375#define SE } while (0)
376
377#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
378
379static void 513static void
380load_perl (pTHX_ Coro__State c) 514load_perl (pTHX_ Coro__State c)
381{ 515{
516 perl_slots *slot = c->slot;
517 c->slot = 0;
518
519 PL_mainstack = c->mainstack;
520
521 GvSV (PL_defgv) = slot->defsv;
522 GvAV (PL_defgv) = slot->defav;
523 GvSV (PL_errgv) = slot->errsv;
524 GvSV (irsgv) = slot->irsgv;
525
382#define VAR(name,type) PL_ ## name = c->name; 526 #define VAR(name,type) PL_ ## name = slot->name;
383# include "state.h" 527 # include "state.h"
384#undef VAR 528 #undef VAR
385
386 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
387 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
388 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
389 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
390
391 if (c->irssv)
392 {
393 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
394 {
395 SvREFCNT_dec (c->irssv);
396 c->irssv = 0;
397 }
398 else
399 {
400 REPLACE_SV (PL_rs, c->irssv);
401 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
402 sv_setsv (c->irssv_sv, PL_rs);
403 }
404 }
405 529
406 { 530 {
407 dSP; 531 dSP;
532
408 CV *cv; 533 CV *cv;
409 534
410 /* now do the ugly restore mess */ 535 /* now do the ugly restore mess */
411 while ((cv = (CV *)POPs)) 536 while (expect_true (cv = (CV *)POPs))
412 { 537 {
413 put_padlist (aTHX_ cv); /* mark this padlist as available */ 538 put_padlist (aTHX_ cv); /* mark this padlist as available */
414 CvDEPTH (cv) = PTR2IV (POPs); 539 CvDEPTH (cv) = PTR2IV (POPs);
415 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
416 } 541 }
417 542
418 PUTBACK; 543 PUTBACK;
419 } 544 }
545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
420} 548}
421 549
422static void 550static void
423save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
424{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
425 { 556 {
426 dSP; 557 dSP;
427 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
428 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
429 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
435 566
436 XPUSHs (Nullsv); 567 XPUSHs (Nullsv);
437 /* this loop was inspired by pp_caller */ 568 /* this loop was inspired by pp_caller */
438 for (;;) 569 for (;;)
439 { 570 {
440 while (cxix >= 0) 571 while (expect_true (cxix >= 0))
441 { 572 {
442 PERL_CONTEXT *cx = &ccstk[cxix--]; 573 PERL_CONTEXT *cx = &ccstk[cxix--];
443 574
444 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 575 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
445 { 576 {
446 CV *cv = cx->blk_sub.cv; 577 CV *cv = cx->blk_sub.cv;
447 578
448 if (CvDEPTH (cv)) 579 if (expect_true (CvDEPTH (cv)))
449 { 580 {
450 EXTEND (SP, 3); 581 EXTEND (SP, 3);
451 PUSHs ((SV *)CvPADLIST (cv)); 582 PUSHs ((SV *)CvPADLIST (cv));
452 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 583 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
453 PUSHs ((SV *)cv); 584 PUSHs ((SV *)cv);
454 585
455 CvDEPTH (cv) = 0; 586 CvDEPTH (cv) = 0;
456 get_padlist (aTHX_ cv); 587 get_padlist (aTHX_ cv);
457 } 588 }
458 } 589 }
459 } 590 }
460 591
461 if (top_si->si_type == PERLSI_MAIN) 592 if (expect_true (top_si->si_type == PERLSI_MAIN))
462 break; 593 break;
463 594
464 top_si = top_si->si_prev; 595 top_si = top_si->si_prev;
465 ccstk = top_si->si_cxstack; 596 ccstk = top_si->si_cxstack;
466 cxix = top_si->si_cxix; 597 cxix = top_si->si_cxix;
467 } 598 }
468 599
469 PUTBACK; 600 PUTBACK;
470 } 601 }
471 602
472 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 603 /* allocate some space on the context stack for our purposes */
473 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 604 /* we manually unroll here, as usually 2 slots is enough */
474 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 605 if (SLOT_COUNT >= 1) CXINC;
475 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 606 if (SLOT_COUNT >= 2) CXINC;
476 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 607 if (SLOT_COUNT >= 3) CXINC;
608 {
609 int i;
610 for (i = 3; i < SLOT_COUNT; ++i)
611 CXINC;
612 }
613 cxstack_ix -= SLOT_COUNT; /* undo allocation */
477 614
615 c->mainstack = PL_mainstack;
616
617 {
618 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
619
620 slot->defav = GvAV (PL_defgv);
621 slot->defsv = DEFSV;
622 slot->errsv = ERRSV;
623 slot->irsgv = GvSV (irsgv);
624
478#define VAR(name,type)c->name = PL_ ## name; 625 #define VAR(name,type) slot->name = PL_ ## name;
479# include "state.h" 626 # include "state.h"
480#undef VAR 627 #undef VAR
628 }
481} 629}
482 630
483/* 631/*
484 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
485 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
486 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
487 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
488 */ 636 */
489#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
490# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
491#else 639#else
492static void 640static void
493coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
494{ 642{
495 PL_curstackinfo = new_stackinfo(64, 6); 643 PL_curstackinfo = new_stackinfo(32, 8);
496 PL_curstackinfo->si_type = PERLSI_MAIN; 644 PL_curstackinfo->si_type = PERLSI_MAIN;
497 PL_curstack = PL_curstackinfo->si_stack; 645 PL_curstack = PL_curstackinfo->si_stack;
498 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 646 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
499 647
500 PL_stack_base = AvARRAY(PL_curstack); 648 PL_stack_base = AvARRAY(PL_curstack);
501 PL_stack_sp = PL_stack_base; 649 PL_stack_sp = PL_stack_base;
502 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 650 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
503 651
504 New(50,PL_tmps_stack,64,SV*); 652 New(50,PL_tmps_stack,32,SV*);
505 PL_tmps_floor = -1; 653 PL_tmps_floor = -1;
506 PL_tmps_ix = -1; 654 PL_tmps_ix = -1;
507 PL_tmps_max = 64; 655 PL_tmps_max = 32;
508 656
509 New(54,PL_markstack,16,I32); 657 New(54,PL_markstack,16,I32);
510 PL_markstack_ptr = PL_markstack; 658 PL_markstack_ptr = PL_markstack;
511 PL_markstack_max = PL_markstack + 16; 659 PL_markstack_max = PL_markstack + 16;
512 660
513#ifdef SET_MARK_OFFSET 661#ifdef SET_MARK_OFFSET
514 SET_MARK_OFFSET; 662 SET_MARK_OFFSET;
515#endif 663#endif
516 664
517 New(54,PL_scopestack,16,I32); 665 New(54,PL_scopestack,8,I32);
518 PL_scopestack_ix = 0; 666 PL_scopestack_ix = 0;
519 PL_scopestack_max = 16; 667 PL_scopestack_max = 8;
520 668
521 New(54,PL_savestack,64,ANY); 669 New(54,PL_savestack,24,ANY);
522 PL_savestack_ix = 0; 670 PL_savestack_ix = 0;
523 PL_savestack_max = 64; 671 PL_savestack_max = 24;
524 672
525#if !PERL_VERSION_ATLEAST (5,9,0) 673#if !PERL_VERSION_ATLEAST (5,10,0)
526 New(54,PL_retstack,4,OP*); 674 New(54,PL_retstack,4,OP*);
527 PL_retstack_ix = 0; 675 PL_retstack_ix = 0;
528 PL_retstack_max = 4; 676 PL_retstack_max = 4;
529#endif 677#endif
530} 678}
… …
532 680
533/* 681/*
534 * destroy the stacks, the callchain etc... 682 * destroy the stacks, the callchain etc...
535 */ 683 */
536static void 684static void
537coro_destroy_stacks (pTHX) 685coro_destruct_stacks (pTHX)
538{ 686{
539 if (!IN_DESTRUCT)
540 {
541 /* restore all saved variables and stuff */
542 LEAVE_SCOPE (0);
543 assert (PL_tmps_floor == -1);
544
545 /* free all temporaries */
546 FREETMPS;
547 assert (PL_tmps_ix == -1);
548
549 /* unwind all extra stacks */
550 POPSTACK_TO (PL_mainstack);
551
552 /* unwind main stack */
553 dounwind (-1);
554 }
555
556 while (PL_curstackinfo->si_next) 687 while (PL_curstackinfo->si_next)
557 PL_curstackinfo = PL_curstackinfo->si_next; 688 PL_curstackinfo = PL_curstackinfo->si_next;
558 689
559 while (PL_curstackinfo) 690 while (PL_curstackinfo)
560 { 691 {
… …
570 701
571 Safefree (PL_tmps_stack); 702 Safefree (PL_tmps_stack);
572 Safefree (PL_markstack); 703 Safefree (PL_markstack);
573 Safefree (PL_scopestack); 704 Safefree (PL_scopestack);
574 Safefree (PL_savestack); 705 Safefree (PL_savestack);
575#if !PERL_VERSION_ATLEAST (5,9,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
576 Safefree (PL_retstack); 707 Safefree (PL_retstack);
577#endif 708#endif
578} 709}
710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
579 719
580static size_t 720static size_t
581coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
582{ 722{
583 size_t rss = sizeof (coro); 723 size_t rss = sizeof (*coro);
584 724
585 if (coro->mainstack) 725 if (coro->mainstack)
586 { 726 {
587 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
588 { 728 {
589 #define VAR(name,type)coro->name = PL_ ## name; 729 #define SYM(sym) PL_ ## sym
590 # include "state.h" 730 CORO_RSS;
591 #undef VAR 731 #undef SYM
592 } 732 }
593 733 else
594 rss += sizeof (coro->curstackinfo); 734 {
595 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 735 #define SYM(sym) coro->slot->sym
596 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
597 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 737 #undef SYM
598 rss += coro->tmps_max * sizeof (SV *); 738 }
599 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
600 rss += coro->scopestack_max * sizeof (I32);
601 rss += coro->savestack_max * sizeof (ANY);
602
603#if !PERL_VERSION_ATLEAST (5,9,0)
604 rss += coro->retstack_max * sizeof (OP *);
605#endif
606 } 739 }
607 740
608 return rss; 741 return rss;
609} 742}
610 743
611/** coroutine stack handling ************************************************/ 744/** coroutine stack handling ************************************************/
612 745
746static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
747static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
748static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
749
750/* apparently < 5.8.8 */
751#ifndef MgPV_nolen_const
752#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
753 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
754 (const char*)(mg)->mg_ptr)
755#endif
756
757/*
758 * This overrides the default magic get method of %SIG elements.
759 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
760 * and instead of tryign to save and restore the hash elements, we just provide
761 * readback here.
762 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
763 * not expecting this to actually change the hook. This is a potential problem
764 * when a schedule happens then, but we ignore this.
765 */
613static void 766static int
767coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
768{
769 const char *s = MgPV_nolen_const (mg);
770
771 if (*s == '_')
772 {
773 SV **svp = 0;
774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
781 return 0;
782 }
783 }
784
785 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
786}
787
788static int
789coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
790{
791 const char *s = MgPV_nolen_const (mg);
792
793 if (*s == '_')
794 {
795 SV **svp = 0;
796
797 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799
800 if (svp)
801 {
802 SV *old = *svp;
803 *svp = 0;
804 SvREFCNT_dec (old);
805 return 0;
806 }
807 }
808
809 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
810}
811
812static int
813coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
814{
815 const char *s = MgPV_nolen_const (mg);
816
817 if (*s == '_')
818 {
819 SV **svp = 0;
820
821 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
822 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
823
824 if (svp)
825 {
826 SV *old = *svp;
827 *svp = newSVsv (sv);
828 SvREFCNT_dec (old);
829 return 0;
830 }
831 }
832
833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
834}
835
836static void
837prepare_nop (pTHX_ struct coro_transfer_args *ta)
838{
839 /* kind of mega-hacky, but works */
840 ta->next = ta->prev = (struct coro *)ta;
841}
842
843static int
844slf_check_nop (pTHX_ struct CoroSLF *frame)
845{
846 return 0;
847}
848
849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
614setup_coro (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
615{ 859{
616 /* 860 /*
617 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
618 */ 862 */
619 coro_init_stacks (aTHX); 863 coro_init_stacks (aTHX);
… …
621 PL_runops = RUNOPS_DEFAULT; 865 PL_runops = RUNOPS_DEFAULT;
622 PL_curcop = &PL_compiling; 866 PL_curcop = &PL_compiling;
623 PL_in_eval = EVAL_NULL; 867 PL_in_eval = EVAL_NULL;
624 PL_comppad = 0; 868 PL_comppad = 0;
625 PL_curpm = 0; 869 PL_curpm = 0;
870 PL_curpad = 0;
626 PL_localizing = 0; 871 PL_localizing = 0;
627 PL_dirty = 0; 872 PL_dirty = 0;
628 PL_restartop = 0; 873 PL_restartop = 0;
874#if PERL_VERSION_ATLEAST (5,10,0)
875 PL_parser = 0;
876#endif
877
878 /* recreate the die/warn hooks */
879 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
880 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
881
882 GvSV (PL_defgv) = newSV (0);
883 GvAV (PL_defgv) = coro->args; coro->args = 0;
884 GvSV (PL_errgv) = newSV (0);
885 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
886 PL_rs = newSVsv (GvSV (irsgv));
887 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
629 888
630 { 889 {
631 dSP; 890 dSP;
632 LOGOP myop; 891 UNOP myop;
633 892
634 SvREFCNT_dec (GvAV (PL_defgv));
635 GvAV (PL_defgv) = coro->args; coro->args = 0;
636
637 Zero (&myop, 1, LOGOP); 893 Zero (&myop, 1, UNOP);
638 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
639 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
640 897
641 PUSHMARK (SP); 898 PUSHMARK (SP);
642 XPUSHs (av_shift (GvAV (PL_defgv))); 899 PUSHs ((SV *)coro->startcv);
643 PUTBACK; 900 PUTBACK;
644 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
645 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
646 SPAGAIN;
647 } 903 }
648 904
649 ENTER; /* necessary e.g. for dounwind */ 905 /* this newly created coroutine might be run on an existing cctx which most
650} 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
907 */
908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
651 910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
921}
922
652static void 923static void
924coro_destruct (pTHX_ struct coro *coro)
925{
926 if (!IN_DESTRUCT)
927 {
928 /* restore all saved variables and stuff */
929 LEAVE_SCOPE (0);
930 assert (PL_tmps_floor == -1);
931
932 /* free all temporaries */
933 FREETMPS;
934 assert (PL_tmps_ix == -1);
935
936 /* unwind all extra stacks */
937 POPSTACK_TO (PL_mainstack);
938
939 /* unwind main stack */
940 dounwind (-1);
941 }
942
943 SvREFCNT_dec (GvSV (PL_defgv));
944 SvREFCNT_dec (GvAV (PL_defgv));
945 SvREFCNT_dec (GvSV (PL_errgv));
946 SvREFCNT_dec (PL_defoutgv);
947 SvREFCNT_dec (PL_rs);
948 SvREFCNT_dec (GvSV (irsgv));
949
950 SvREFCNT_dec (PL_diehook);
951 SvREFCNT_dec (PL_warnhook);
952
953 SvREFCNT_dec (coro->saved_deffh);
954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
957
958 coro_destruct_stacks (aTHX);
959}
960
961INLINE void
653free_coro_mortal (pTHX) 962free_coro_mortal (pTHX)
654{ 963{
655 if (coro_mortal) 964 if (expect_true (coro_mortal))
656 { 965 {
657 SvREFCNT_dec (coro_mortal); 966 SvREFCNT_dec (coro_mortal);
658 coro_mortal = 0; 967 coro_mortal = 0;
659 } 968 }
660} 969}
… …
662static int 971static int
663runops_trace (pTHX) 972runops_trace (pTHX)
664{ 973{
665 COP *oldcop = 0; 974 COP *oldcop = 0;
666 int oldcxix = -2; 975 int oldcxix = -2;
667 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
668 coro_cctx *cctx = coro->cctx;
669 976
670 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
671 { 978 {
672 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
673 980
674 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 981 if (cctx_current->flags & CC_TRACE_ALL)
675 { 982 {
676 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
677 SV **bot, **top;
678 AV *av = newAV (); /* return values */
679 SV **cb;
680 runops_proc_t old_runops = PL_runops;
681 dSP;
682 ENTER;
683 SAVETMPS;
684 EXTEND (SP, 3);
685 PL_runops = RUNOPS_DEFAULT;
686
687 GV *gv = CvGV (cx->blk_sub.cv);
688 SV *fullname = sv_2mortal (newSV (0));
689 if (isGV (gv))
690 gv_efullname3 (fullname, gv, 0);
691
692 bot = PL_stack_base + cx->blk_oldsp + 1;
693 top = cx->blk_gimme == G_ARRAY ? SP + 1
694 : cx->blk_gimme == G_SCALAR ? bot + 1
695 : bot;
696
697 while (bot < top)
698 av_push (av, SvREFCNT_inc (*bot++));
699
700 PUSHMARK (SP);
701 PUSHs (&PL_sv_no);
702 PUSHs (fullname);
703 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
704 PUTBACK;
705 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
706 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
707 SPAGAIN;
708
709 FREETMPS;
710 LEAVE;
711 PL_runops = old_runops;
712 }
713
714 if (oldcop != PL_curcop)
715 {
716 oldcop = PL_curcop;
717
718 if (PL_curcop != &PL_compiling)
719 { 984 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 SV **bot, **top;
987 AV *av = newAV (); /* return values */
720 SV **cb; 988 SV **cb;
721 runops_proc_t old_runops = PL_runops;
722 dSP; 989 dSP;
990
991 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0));
993 if (isGV (gv))
994 gv_efullname3 (fullname, gv, 0);
995
996 bot = PL_stack_base + cx->blk_oldsp + 1;
997 top = cx->blk_gimme == G_ARRAY ? SP + 1
998 : cx->blk_gimme == G_SCALAR ? bot + 1
999 : bot;
1000
1001 av_extend (av, top - bot);
1002 while (bot < top)
1003 av_push (av, SvREFCNT_inc_NN (*bot++));
1004
1005 PL_runops = RUNOPS_DEFAULT;
723 ENTER; 1006 ENTER;
724 SAVETMPS; 1007 SAVETMPS;
725 EXTEND (SP, 3); 1008 EXTEND (SP, 3);
726 PL_runops = RUNOPS_DEFAULT; 1009 PUSHMARK (SP);
1010 PUSHs (&PL_sv_no);
1011 PUSHs (fullname);
1012 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1013 PUTBACK;
1014 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1015 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1016 SPAGAIN;
1017 FREETMPS;
1018 LEAVE;
1019 PL_runops = runops_trace;
1020 }
727 1021
728 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1022 if (oldcop != PL_curcop)
1023 {
1024 oldcop = PL_curcop;
1025
1026 if (PL_curcop != &PL_compiling)
729 { 1027 {
730 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1028 SV **cb;
731 1029
732 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
733 { 1031 {
1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1033
1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1035 {
1036 dSP;
734 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
735 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
1039
736 if (isGV (gv)) 1040 if (isGV (gv))
737 gv_efullname3 (fullname, gv, 0); 1041 gv_efullname3 (fullname, gv, 0);
738 1042
1043 PL_runops = RUNOPS_DEFAULT;
1044 ENTER;
1045 SAVETMPS;
1046 EXTEND (SP, 3);
1047 PUSHMARK (SP);
1048 PUSHs (&PL_sv_yes);
1049 PUSHs (fullname);
1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1051 PUTBACK;
1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1054 SPAGAIN;
1055 FREETMPS;
1056 LEAVE;
1057 PL_runops = runops_trace;
1058 }
1059
1060 oldcxix = cxstack_ix;
1061 }
1062
1063 if (cctx_current->flags & CC_TRACE_LINE)
1064 {
1065 dSP;
1066
1067 PL_runops = RUNOPS_DEFAULT;
1068 ENTER;
1069 SAVETMPS;
1070 EXTEND (SP, 3);
1071 PL_runops = RUNOPS_DEFAULT;
739 PUSHMARK (SP); 1072 PUSHMARK (SP);
740 PUSHs (&PL_sv_yes); 1073 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
741 PUSHs (fullname); 1074 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
742 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
743 PUTBACK; 1075 PUTBACK;
744 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1076 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
745 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1077 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
746 SPAGAIN; 1078 SPAGAIN;
1079 FREETMPS;
1080 LEAVE;
1081 PL_runops = runops_trace;
747 } 1082 }
748
749 oldcxix = cxstack_ix;
750 } 1083 }
751
752 if (cctx->flags & CC_TRACE_LINE)
753 {
754 PUSHMARK (SP);
755 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
756 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
757 PUTBACK;
758 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
759 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
760 SPAGAIN;
761 }
762
763 FREETMPS;
764 LEAVE;
765 PL_runops = old_runops;
766 } 1084 }
767 } 1085 }
768 } 1086 }
769 1087
770 TAINT_NOT; 1088 TAINT_NOT;
771 return 0; 1089 return 0;
772} 1090}
773 1091
774/* inject a fake call to Coro::State::_cctx_init into the execution */ 1092static struct CoroSLF cctx_ssl_frame;
775/* _cctx_init should be careful, as it could be called at almost any time */ 1093
776/* during execution of a perl program */ 1094static void
1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1096{
1097 ta->prev = 0;
1098}
1099
1100static int
1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1102{
1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
777static void NOINLINE 1109static void NOINLINE
778prepare_cctx (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
779{ 1111{
780 dSP;
781 LOGOP myop;
782
783 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
784 1113
785 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
786 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
787 1116
788 Zero (&myop, 1, LOGOP); 1117 /* we already must be executing an SLF op, there is no other valid way
789 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
790 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
791 1121
792 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
793 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
794 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1124
795 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
796 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
797 PL_op = (OP *)&myop; 1127}
798 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1128
799 SPAGAIN; 1129/* the tail of transfer: execute stuff we can only do after a transfer */
1130INLINE void
1131transfer_tail (pTHX)
1132{
1133 free_coro_mortal (aTHX);
800} 1134}
801 1135
802/* 1136/*
803 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
804 */ 1138 */
805static void 1139static void
806coro_run (void *arg) 1140cctx_run (void *arg)
807{ 1141{
1142#ifdef USE_ITHREADS
1143# if CORO_PTHREAD
1144 PERL_SET_CONTEXT (coro_thx);
1145# endif
1146#endif
1147 {
808 dTHX; 1148 dTHX;
809 1149
810 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1150 /* normally we would need to skip the entersub here */
811 UNLOCK; 1151 /* not doing so will re-execute it, which is exactly what we want */
812
813 /* we now skip the entersub that lead to transfer() */
814 PL_op = PL_op->op_next; 1152 /* PL_nop = PL_nop->op_next */
815 1153
816 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
817 prepare_cctx (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
818 1156
1157 /* cctx_run is the alternative tail of transfer() */
1158 transfer_tail (aTHX);
1159
819 /* somebody or something will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
820 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
821 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
822
823 /* 1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
1167
1168 /*
824 * If perl-run returns we assume exit() was being called or the coro 1169 * If perl-run returns we assume exit() was being called or the coro
825 * fell off the end, which seems to be the only valid (non-bug) 1170 * fell off the end, which seems to be the only valid (non-bug)
826 * reason for perl_run to return. We try to exit by jumping to the 1171 * reason for perl_run to return. We try to exit by jumping to the
827 * bootstrap-time "top" top_env, as we cannot restore the "main" 1172 * bootstrap-time "top" top_env, as we cannot restore the "main"
828 * coroutine as Coro has no such concept 1173 * coroutine as Coro has no such concept
829 */ 1174 */
830 PL_top_env = main_top_env; 1175 PL_top_env = main_top_env;
831 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1176 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1177 }
832} 1178}
833 1179
834static coro_cctx * 1180static coro_cctx *
835cctx_new () 1181cctx_new ()
836{ 1182{
837 coro_cctx *cctx; 1183 coro_cctx *cctx;
1184
1185 ++cctx_count;
1186 New (0, cctx, 1, coro_cctx);
1187
1188 cctx->gen = cctx_gen;
1189 cctx->flags = 0;
1190 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1191
1192 return cctx;
1193}
1194
1195/* create a new cctx only suitable as source */
1196static coro_cctx *
1197cctx_new_empty ()
1198{
1199 coro_cctx *cctx = cctx_new ();
1200
1201 cctx->sptr = 0;
1202 coro_create (&cctx->cctx, 0, 0, 0, 0);
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx suitable as destination/running a perl interpreter */
1208static coro_cctx *
1209cctx_new_run ()
1210{
1211 coro_cctx *cctx = cctx_new ();
838 void *stack_start; 1212 void *stack_start;
839 size_t stack_size; 1213 size_t stack_size;
840 1214
841 ++cctx_count;
842
843 Newz (0, cctx, 1, coro_cctx);
844
845#if HAVE_MMAP 1215#if HAVE_MMAP
846
847 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1216 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
848 /* mmap supposedly does allocate-on-write for us */ 1217 /* mmap supposedly does allocate-on-write for us */
849 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1218 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
850 1219
851 if (cctx->sptr != (void *)-1) 1220 if (cctx->sptr != (void *)-1)
852 { 1221 {
853# if CORO_STACKGUARD 1222 #if CORO_STACKGUARD
854 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1223 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
855# endif 1224 #endif
856 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1225 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
857 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1226 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
858 cctx->flags |= CC_MAPPED; 1227 cctx->flags |= CC_MAPPED;
859 } 1228 }
860 else 1229 else
861#endif 1230#endif
862 { 1231 {
863 cctx->ssize = coro_stacksize * (long)sizeof (long); 1232 cctx->ssize = cctx_stacksize * (long)sizeof (long);
864 New (0, cctx->sptr, coro_stacksize, long); 1233 New (0, cctx->sptr, cctx_stacksize, long);
865 1234
866 if (!cctx->sptr) 1235 if (!cctx->sptr)
867 { 1236 {
868 perror ("FATAL: unable to allocate stack for coroutine"); 1237 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
869 _exit (EXIT_FAILURE); 1238 _exit (EXIT_FAILURE);
870 } 1239 }
871 1240
872 stack_start = cctx->sptr; 1241 stack_start = cctx->sptr;
873 stack_size = cctx->ssize; 1242 stack_size = cctx->ssize;
874 } 1243 }
875 1244
876 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1245 #if CORO_USE_VALGRIND
1246 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1247 #endif
1248
877 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1249 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
878 1250
879 return cctx; 1251 return cctx;
880} 1252}
881 1253
882static void 1254static void
883cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
884{ 1256{
885 if (!cctx) 1257 if (!cctx)
886 return; 1258 return;
887 1259
1260 assert (cctx != cctx_current);//D temporary
1261
888 --cctx_count; 1262 --cctx_count;
1263 coro_destroy (&cctx->cctx);
889 1264
1265 /* coro_transfer creates new, empty cctx's */
1266 if (cctx->sptr)
1267 {
890#if CORO_USE_VALGRIND 1268 #if CORO_USE_VALGRIND
891 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1269 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
892#endif 1270 #endif
893 1271
894#if HAVE_MMAP 1272#if HAVE_MMAP
895 if (cctx->flags & CC_MAPPED) 1273 if (cctx->flags & CC_MAPPED)
896 munmap (cctx->sptr, cctx->ssize); 1274 munmap (cctx->sptr, cctx->ssize);
897 else 1275 else
898#endif 1276#endif
899 Safefree (cctx->sptr); 1277 Safefree (cctx->sptr);
1278 }
900 1279
901 Safefree (cctx); 1280 Safefree (cctx);
902} 1281}
1282
1283/* wether this cctx should be destructed */
1284#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
903 1285
904static coro_cctx * 1286static coro_cctx *
905cctx_get (pTHX) 1287cctx_get (pTHX)
906{ 1288{
907 while (cctx_first) 1289 while (expect_true (cctx_first))
908 { 1290 {
909 coro_cctx *cctx = cctx_first; 1291 coro_cctx *cctx = cctx_first;
910 cctx_first = cctx->next; 1292 cctx_first = cctx->next;
911 --cctx_idle; 1293 --cctx_idle;
912 1294
913 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1295 if (expect_true (!CCTX_EXPIRED (cctx)))
914 return cctx; 1296 return cctx;
915 1297
916 cctx_destroy (cctx); 1298 cctx_destroy (cctx);
917 } 1299 }
918 1300
919 return cctx_new (); 1301 return cctx_new_run ();
920} 1302}
921 1303
922static void 1304static void
923cctx_put (coro_cctx *cctx) 1305cctx_put (coro_cctx *cctx)
924{ 1306{
1307 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1308
925 /* free another cctx if overlimit */ 1309 /* free another cctx if overlimit */
926 if (cctx_idle >= MAX_IDLE_CCTX) 1310 if (expect_false (cctx_idle >= cctx_max_idle))
927 { 1311 {
928 coro_cctx *first = cctx_first; 1312 coro_cctx *first = cctx_first;
929 cctx_first = first->next; 1313 cctx_first = first->next;
930 --cctx_idle; 1314 --cctx_idle;
931 1315
… …
937 cctx_first = cctx; 1321 cctx_first = cctx;
938} 1322}
939 1323
940/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
941 1325
942static void NOINLINE 1326static void
943transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
944{ 1328{
945 if (prev != next) 1329 /* TODO: throwing up here is considered harmful */
1330
1331 if (expect_true (prev != next))
946 { 1332 {
947 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
948 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1334 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
949 1335
950 if (next->flags & CF_RUNNING) 1336 if (expect_false (next->flags & CF_RUNNING))
951 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
952 1338
953 if (next->flags & CF_DESTROYED) 1339 if (expect_false (next->flags & CF_DESTROYED))
954 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
955 1341
1342#if !PERL_VERSION_ATLEAST (5,10,0)
956 if (PL_lex_state != LEX_NOTPARSING) 1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
957 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1345#endif
958 } 1346 }
959} 1347}
960 1348
961/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
962static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
963transfer (pTHX_ struct coro *prev, struct coro *next) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
964{ 1352{
965 dSTACKLEVEL; 1353 dSTACKLEVEL;
966 1354
967 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
968 if (!next) 1356 if (expect_false (!prev))
969 { 1357 {
970 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
971 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
972 }
973 else if (prev != next)
974 { 1360 }
1361 else if (expect_true (prev != next))
1362 {
975 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
976 1364
977 if (prev->flags & CF_NEW) 1365 if (expect_false (prev->flags & CF_NEW))
978 { 1366 {
979 /* create a new empty context */ 1367 /* create a new empty/source context */
980 Newz (0, prev->cctx, 1, coro_cctx);
981 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
982 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
983 } 1370 }
984 1371
985 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
986 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
987 1374
988 LOCK; 1375 /* first get rid of the old state */
1376 save_perl (aTHX_ prev);
989 1377
990 if (next->flags & CF_NEW) 1378 if (expect_false (next->flags & CF_NEW))
991 { 1379 {
992 /* need to start coroutine */ 1380 /* need to start coroutine */
993 next->flags &= ~CF_NEW; 1381 next->flags &= ~CF_NEW;
994 /* first get rid of the old state */
995 save_perl (aTHX_ prev);
996 /* setup coroutine call */ 1382 /* setup coroutine call */
997 setup_coro (aTHX_ next); 1383 coro_setup (aTHX_ next);
998 } 1384 }
999 else 1385 else
1386 load_perl (aTHX_ next);
1387
1388 /* possibly untie and reuse the cctx */
1389 if (expect_true (
1390 cctx_current->idle_sp == STACKLEVEL
1391 && !(cctx_current->flags & CC_TRACE)
1392 && !force_cctx
1393 ))
1000 { 1394 {
1001 /* coroutine already started */ 1395 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1002 save_perl (aTHX_ prev); 1396 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1003 load_perl (aTHX_ next); 1397
1398 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1399 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1400 if (expect_false (CCTX_EXPIRED (cctx_current)))
1401 if (!next->cctx)
1402 next->cctx = cctx_get (aTHX);
1403
1404 cctx_put (cctx_current);
1405 assert (!prev->cctx);//D temporary
1004 } 1406 }
1407 else
1408 prev->cctx = cctx_current;
1005 1409
1006 prev__cctx = prev->cctx; 1410 ++next->usecount;
1007 1411
1008 /* possibly "free" the cctx */ 1412 cctx_prev = cctx_current;
1009 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)) 1413 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1414
1415 next->cctx = 0;
1416
1417 if (expect_false (cctx_prev != cctx_current))
1010 { 1418 {
1011 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1419 cctx_prev->top_env = PL_top_env;
1012 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1420 PL_top_env = cctx_current->top_env;
1013 1421 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1014 prev->cctx = 0;
1015
1016 cctx_put (prev__cctx);
1017 } 1422 }
1018 1423
1019 if (!next->cctx) 1424 transfer_tail (aTHX);
1020 next->cctx = cctx_get (aTHX);
1021
1022 if (prev__cctx != next->cctx)
1023 {
1024 prev__cctx->top_env = PL_top_env;
1025 PL_top_env = next->cctx->top_env;
1026 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1027 }
1028
1029 free_coro_mortal (aTHX);
1030 UNLOCK;
1031 } 1425 }
1032} 1426}
1033 1427
1034struct transfer_args
1035{
1036 struct coro *prev, *next;
1037};
1038
1039#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1428#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1040#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1429#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1041 1430
1042/** high level stuff ********************************************************/ 1431/** high level stuff ********************************************************/
1043 1432
1044static int 1433static int
1045coro_state_destroy (pTHX_ struct coro *coro) 1434coro_state_destroy (pTHX_ struct coro *coro)
1046{ 1435{
1047 if (coro->flags & CF_DESTROYED) 1436 if (coro->flags & CF_DESTROYED)
1048 return 0; 1437 return 0;
1438
1439 if (coro->on_destroy)
1440 coro->on_destroy (aTHX_ coro);
1049 1441
1050 coro->flags |= CF_DESTROYED; 1442 coro->flags |= CF_DESTROYED;
1051 1443
1052 if (coro->flags & CF_READY) 1444 if (coro->flags & CF_READY)
1053 { 1445 {
1054 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1446 /* reduce nready, as destroying a ready coro effectively unreadies it */
1055 /* alternative: look through all ready queues and remove the coro */ 1447 /* alternative: look through all ready queues and remove the coro */
1056 LOCK;
1057 --coro_nready; 1448 --coro_nready;
1058 UNLOCK;
1059 } 1449 }
1060 else 1450 else
1061 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1451 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1062 1452
1063 if (coro->mainstack && coro->mainstack != main_mainstack) 1453 if (coro->mainstack && coro->mainstack != main_mainstack)
1064 { 1454 {
1065 struct coro temp; 1455 struct coro temp;
1066 1456
1067 assert (!(coro->flags & CF_RUNNING)); 1457 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1068
1069 Zero (&temp, 1, struct coro);
1070 temp.save = CORO_SAVE_ALL;
1071
1072 if (coro->flags & CF_RUNNING)
1073 croak ("FATAL: tried to destroy currently running coroutine");
1074 1458
1075 save_perl (aTHX_ &temp); 1459 save_perl (aTHX_ &temp);
1076 load_perl (aTHX_ coro); 1460 load_perl (aTHX_ coro);
1077 1461
1078 coro_destroy_stacks (aTHX); 1462 coro_destruct (aTHX_ coro);
1079 1463
1080 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1464 load_perl (aTHX_ &temp);
1081 1465
1082 coro->mainstack = 0; 1466 coro->slot = 0;
1083 } 1467 }
1084 1468
1085 cctx_destroy (coro->cctx); 1469 cctx_destroy (coro->cctx);
1470 SvREFCNT_dec (coro->startcv);
1086 SvREFCNT_dec (coro->args); 1471 SvREFCNT_dec (coro->args);
1472 SvREFCNT_dec (CORO_THROW);
1087 1473
1088 if (coro->next) coro->next->prev = coro->prev; 1474 if (coro->next) coro->next->prev = coro->prev;
1089 if (coro->prev) coro->prev->next = coro->next; 1475 if (coro->prev) coro->prev->next = coro->next;
1090 if (coro == coro_first) coro_first = coro->next; 1476 if (coro == coro_first) coro_first = coro->next;
1091 1477
… …
1129# define MGf_DUP 0 1515# define MGf_DUP 0
1130#endif 1516#endif
1131}; 1517};
1132 1518
1133static void 1519static void
1134prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1520prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1135{ 1521{
1136 ta->prev = SvSTATE (prev_sv); 1522 ta->prev = SvSTATE (prev_sv);
1137 ta->next = SvSTATE (next_sv); 1523 ta->next = SvSTATE (next_sv);
1138 TRANSFER_CHECK (*ta); 1524 TRANSFER_CHECK (*ta);
1139} 1525}
1140 1526
1141static void 1527static void
1142api_transfer (SV *prev_sv, SV *next_sv) 1528api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1143{ 1529{
1144 dTHX;
1145 struct transfer_args ta; 1530 struct coro_transfer_args ta;
1146 1531
1147 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1532 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1148 TRANSFER (ta); 1533 TRANSFER (ta, 1);
1149} 1534}
1150 1535
1151static int 1536/*****************************************************************************/
1152api_save (SV *coro_sv, int new_save) 1537/* gensub: simple closure generation utility */
1153{
1154 dTHX;
1155 struct coro *coro = SvSTATE (coro_sv);
1156 int old_save = coro->save;
1157 1538
1158 if (new_save >= 0) 1539#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1159 coro->save = new_save;
1160 1540
1161 return old_save; 1541/* create a closure from XS, returns a code reference */
1542/* the arg can be accessed via GENSUB_ARG from the callback */
1543/* the callback must use dXSARGS/XSRETURN */
1544static SV *
1545gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1546{
1547 CV *cv = (CV *)newSV (0);
1548
1549 sv_upgrade ((SV *)cv, SVt_PVCV);
1550
1551 CvANON_on (cv);
1552 CvISXSUB_on (cv);
1553 CvXSUB (cv) = xsub;
1554 GENSUB_ARG = arg;
1555
1556 return newRV_noinc ((SV *)cv);
1162} 1557}
1163 1558
1164/** Coro ********************************************************************/ 1559/** Coro ********************************************************************/
1165 1560
1166static void 1561INLINE void
1167coro_enq (pTHX_ SV *coro_sv) 1562coro_enq (pTHX_ struct coro *coro)
1168{ 1563{
1169 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1564 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1170} 1565}
1171 1566
1172static SV * 1567INLINE SV *
1173coro_deq (pTHX_ int min_prio) 1568coro_deq (pTHX)
1174{ 1569{
1175 int prio = PRIO_MAX - PRIO_MIN; 1570 int prio;
1176 1571
1177 min_prio -= PRIO_MIN;
1178 if (min_prio < 0)
1179 min_prio = 0;
1180
1181 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1572 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1182 if (AvFILLp (coro_ready [prio]) >= 0) 1573 if (AvFILLp (coro_ready [prio]) >= 0)
1183 return av_shift (coro_ready [prio]); 1574 return av_shift (coro_ready [prio]);
1184 1575
1185 return 0; 1576 return 0;
1186} 1577}
1187 1578
1188static int 1579static int
1189api_ready (SV *coro_sv) 1580api_ready (pTHX_ SV *coro_sv)
1190{ 1581{
1191 dTHX;
1192 struct coro *coro; 1582 struct coro *coro;
1583 SV *sv_hook;
1584 void (*xs_hook)(void);
1193 1585
1194 if (SvROK (coro_sv)) 1586 if (SvROK (coro_sv))
1195 coro_sv = SvRV (coro_sv); 1587 coro_sv = SvRV (coro_sv);
1196 1588
1197 coro = SvSTATE (coro_sv); 1589 coro = SvSTATE (coro_sv);
… …
1199 if (coro->flags & CF_READY) 1591 if (coro->flags & CF_READY)
1200 return 0; 1592 return 0;
1201 1593
1202 coro->flags |= CF_READY; 1594 coro->flags |= CF_READY;
1203 1595
1204 LOCK; 1596 sv_hook = coro_nready ? 0 : coro_readyhook;
1205 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1597 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1598
1599 coro_enq (aTHX_ coro);
1206 ++coro_nready; 1600 ++coro_nready;
1207 UNLOCK; 1601
1602 if (sv_hook)
1603 {
1604 dSP;
1605
1606 ENTER;
1607 SAVETMPS;
1608
1609 PUSHMARK (SP);
1610 PUTBACK;
1611 call_sv (sv_hook, G_VOID | G_DISCARD);
1612
1613 FREETMPS;
1614 LEAVE;
1615 }
1616
1617 if (xs_hook)
1618 xs_hook ();
1208 1619
1209 return 1; 1620 return 1;
1210} 1621}
1211 1622
1212static int 1623static int
1213api_is_ready (SV *coro_sv) 1624api_is_ready (pTHX_ SV *coro_sv)
1214{ 1625{
1215 dTHX;
1216 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1626 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1217} 1627}
1218 1628
1629/* expects to own a reference to next->hv */
1630INLINE void
1631prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1632{
1633 SV *prev_sv = SvRV (coro_current);
1634
1635 ta->prev = SvSTATE_hv (prev_sv);
1636 ta->next = next;
1637
1638 TRANSFER_CHECK (*ta);
1639
1640 SvRV_set (coro_current, (SV *)next->hv);
1641
1642 free_coro_mortal (aTHX);
1643 coro_mortal = prev_sv;
1644}
1645
1219static void 1646static void
1220prepare_schedule (pTHX_ struct transfer_args *ta) 1647prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1221{ 1648{
1222 SV *prev_sv, *next_sv;
1223
1224 for (;;) 1649 for (;;)
1225 { 1650 {
1226 LOCK;
1227 next_sv = coro_deq (aTHX_ PRIO_MIN); 1651 SV *next_sv = coro_deq (aTHX);
1228 1652
1653 if (expect_true (next_sv))
1654 {
1655 struct coro *next = SvSTATE_hv (next_sv);
1656
1657 /* cannot transfer to destroyed coros, skip and look for next */
1658 if (expect_false (next->flags & CF_DESTROYED))
1659 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1660 else
1661 {
1662 next->flags &= ~CF_READY;
1663 --coro_nready;
1664
1665 prepare_schedule_to (aTHX_ ta, next);
1666 break;
1667 }
1668 }
1669 else
1670 {
1229 /* nothing to schedule: call the idle handler */ 1671 /* nothing to schedule: call the idle handler */
1230 if (!next_sv) 1672 dSP;
1673
1674 ENTER;
1675 SAVETMPS;
1676
1677 PUSHMARK (SP);
1678 PUTBACK;
1679 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1680
1681 FREETMPS;
1682 LEAVE;
1683 }
1684 }
1685}
1686
1687INLINE void
1688prepare_cede (pTHX_ struct coro_transfer_args *ta)
1689{
1690 api_ready (aTHX_ coro_current);
1691 prepare_schedule (aTHX_ ta);
1692}
1693
1694INLINE void
1695prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1696{
1697 SV *prev = SvRV (coro_current);
1698
1699 if (coro_nready)
1700 {
1701 prepare_schedule (aTHX_ ta);
1702 api_ready (aTHX_ prev);
1703 }
1704 else
1705 prepare_nop (aTHX_ ta);
1706}
1707
1708static void
1709api_schedule (pTHX)
1710{
1711 struct coro_transfer_args ta;
1712
1713 prepare_schedule (aTHX_ &ta);
1714 TRANSFER (ta, 1);
1715}
1716
1717static void
1718api_schedule_to (pTHX_ SV *coro_sv)
1719{
1720 struct coro_transfer_args ta;
1721 struct coro *next = SvSTATE (coro_sv);
1722
1723 SvREFCNT_inc_NN (coro_sv);
1724 prepare_schedule_to (aTHX_ &ta, next);
1725}
1726
1727static int
1728api_cede (pTHX)
1729{
1730 struct coro_transfer_args ta;
1731
1732 prepare_cede (aTHX_ &ta);
1733
1734 if (expect_true (ta.prev != ta.next))
1735 {
1736 TRANSFER (ta, 1);
1737 return 1;
1738 }
1739 else
1740 return 0;
1741}
1742
1743static int
1744api_cede_notself (pTHX)
1745{
1746 if (coro_nready)
1747 {
1748 struct coro_transfer_args ta;
1749
1750 prepare_cede_notself (aTHX_ &ta);
1751 TRANSFER (ta, 1);
1752 return 1;
1753 }
1754 else
1755 return 0;
1756}
1757
1758static void
1759api_trace (pTHX_ SV *coro_sv, int flags)
1760{
1761 struct coro *coro = SvSTATE (coro_sv);
1762
1763 if (flags & CC_TRACE)
1764 {
1765 if (!coro->cctx)
1766 coro->cctx = cctx_new_run ();
1767 else if (!(coro->cctx->flags & CC_TRACE))
1768 croak ("cannot enable tracing on coroutine with custom stack,");
1769
1770 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1771 }
1772 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1773 {
1774 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1775
1776 if (coro->flags & CF_RUNNING)
1777 PL_runops = RUNOPS_DEFAULT;
1778 else
1779 coro->slot->runops = RUNOPS_DEFAULT;
1780 }
1781}
1782
1783static void
1784coro_call_on_destroy (pTHX_ struct coro *coro)
1785{
1786 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1787 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1788
1789 if (on_destroyp)
1790 {
1791 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1792
1793 while (AvFILLp (on_destroy) >= 0)
1794 {
1795 dSP; /* don't disturb outer sp */
1796 SV *cb = av_pop (on_destroy);
1797
1798 PUSHMARK (SP);
1799
1800 if (statusp)
1801 {
1802 int i;
1803 AV *status = (AV *)SvRV (*statusp);
1804 EXTEND (SP, AvFILLp (status) + 1);
1805
1806 for (i = 0; i <= AvFILLp (status); ++i)
1807 PUSHs (AvARRAY (status)[i]);
1808 }
1809
1810 PUTBACK;
1811 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1812 }
1813 }
1814}
1815
1816static void
1817slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1818{
1819 int i;
1820 HV *hv = (HV *)SvRV (coro_current);
1821 AV *av = newAV ();
1822
1823 av_extend (av, items - 1);
1824 for (i = 0; i < items; ++i)
1825 av_push (av, SvREFCNT_inc_NN (arg [i]));
1826
1827 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1828
1829 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1830 api_ready (aTHX_ sv_manager);
1831
1832 frame->prepare = prepare_schedule;
1833 frame->check = slf_check_repeat;
1834}
1835
1836/*****************************************************************************/
1837/* async pool handler */
1838
1839static int
1840slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1841{
1842 HV *hv = (HV *)SvRV (coro_current);
1843 struct coro *coro = (struct coro *)frame->data;
1844
1845 if (!coro->invoke_cb)
1846 return 1; /* loop till we have invoke */
1847 else
1848 {
1849 hv_store (hv, "desc", sizeof ("desc") - 1,
1850 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1851
1852 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1853
1854 {
1855 dSP;
1856 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1857 PUTBACK;
1858 }
1859
1860 SvREFCNT_dec (GvAV (PL_defgv));
1861 GvAV (PL_defgv) = coro->invoke_av;
1862 coro->invoke_av = 0;
1863
1864 return 0;
1865 }
1866}
1867
1868static void
1869slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1870{
1871 HV *hv = (HV *)SvRV (coro_current);
1872 struct coro *coro = SvSTATE_hv ((SV *)hv);
1873
1874 if (expect_true (coro->saved_deffh))
1875 {
1876 /* subsequent iteration */
1877 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1878 coro->saved_deffh = 0;
1879
1880 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1881 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1882 {
1883 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1884 coro->invoke_av = newAV ();
1885
1886 frame->prepare = prepare_nop;
1887 }
1888 else
1889 {
1890 av_clear (GvAV (PL_defgv));
1891 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1892
1893 coro->prio = 0;
1894
1895 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1896 api_trace (aTHX_ coro_current, 0);
1897
1898 frame->prepare = prepare_schedule;
1899 av_push (av_async_pool, SvREFCNT_inc (hv));
1900 }
1901 }
1902 else
1903 {
1904 /* first iteration, simply fall through */
1905 frame->prepare = prepare_nop;
1906 }
1907
1908 frame->check = slf_check_pool_handler;
1909 frame->data = (void *)coro;
1910}
1911
1912/*****************************************************************************/
1913/* rouse callback */
1914
1915#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1916
1917static void
1918coro_rouse_callback (pTHX_ CV *cv)
1919{
1920 dXSARGS;
1921 SV *data = (SV *)GENSUB_ARG;
1922
1923 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1924 {
1925 /* first call, set args */
1926 AV *av = newAV ();
1927 SV *coro = SvRV (data);
1928
1929 SvRV_set (data, (SV *)av);
1930 api_ready (aTHX_ coro);
1931 SvREFCNT_dec (coro);
1932
1933 /* better take a full copy of the arguments */
1934 while (items--)
1935 av_store (av, items, newSVsv (ST (items)));
1936 }
1937
1938 XSRETURN_EMPTY;
1939}
1940
1941static int
1942slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1943{
1944 SV *data = (SV *)frame->data;
1945
1946 if (CORO_THROW)
1947 return 0;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 return 1;
1951
1952 /* now push all results on the stack */
1953 {
1954 dSP;
1955 AV *av = (AV *)SvRV (data);
1956 int i;
1957
1958 EXTEND (SP, AvFILLp (av) + 1);
1959 for (i = 0; i <= AvFILLp (av); ++i)
1960 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1961
1962 /* we have stolen the elements, so ste length to zero and free */
1963 AvFILLp (av) = -1;
1964 av_undef (av);
1965
1966 PUTBACK;
1967 }
1968
1969 return 0;
1970}
1971
1972static void
1973slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1974{
1975 SV *cb;
1976
1977 if (items)
1978 cb = arg [0];
1979 else
1980 {
1981 struct coro *coro = SvSTATE_current;
1982
1983 if (!coro->rouse_cb)
1984 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1985
1986 cb = sv_2mortal (coro->rouse_cb);
1987 coro->rouse_cb = 0;
1988 }
1989
1990 if (!SvROK (cb)
1991 || SvTYPE (SvRV (cb)) != SVt_PVCV
1992 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1993 croak ("Coro::rouse_wait called with illegal callback argument,");
1994
1995 {
1996 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1997 SV *data = (SV *)GENSUB_ARG;
1998
1999 frame->data = (void *)data;
2000 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2001 frame->check = slf_check_rouse_wait;
2002 }
2003}
2004
2005static SV *
2006coro_new_rouse_cb (pTHX)
2007{
2008 HV *hv = (HV *)SvRV (coro_current);
2009 struct coro *coro = SvSTATE_hv (hv);
2010 SV *data = newRV_inc ((SV *)hv);
2011 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2012
2013 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2014 SvREFCNT_dec (data); /* magicext increases the refcount */
2015
2016 SvREFCNT_dec (coro->rouse_cb);
2017 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2018
2019 return cb;
2020}
2021
2022/*****************************************************************************/
2023/* schedule-like-function opcode (SLF) */
2024
2025static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2026static const CV *slf_cv;
2027static SV **slf_argv;
2028static int slf_argc, slf_arga; /* count, allocated */
2029static I32 slf_ax; /* top of stack, for restore */
2030
2031/* this restores the stack in the case we patched the entersub, to */
2032/* recreate the stack frame as perl will on following calls */
2033/* since entersub cleared the stack */
2034static OP *
2035pp_restore (pTHX)
2036{
2037 int i;
2038 SV **SP = PL_stack_base + slf_ax;
2039
2040 PUSHMARK (SP);
2041
2042 EXTEND (SP, slf_argc + 1);
2043
2044 for (i = 0; i < slf_argc; ++i)
2045 PUSHs (sv_2mortal (slf_argv [i]));
2046
2047 PUSHs ((SV *)CvGV (slf_cv));
2048
2049 RETURNOP (slf_restore.op_first);
2050}
2051
2052static void
2053slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2054{
2055 SV **arg = (SV **)slf_frame.data;
2056
2057 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2058}
2059
2060static void
2061slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2062{
2063 if (items != 2)
2064 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2065
2066 frame->prepare = slf_prepare_transfer;
2067 frame->check = slf_check_nop;
2068 frame->data = (void *)arg; /* let's hope it will stay valid */
2069}
2070
2071static void
2072slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2073{
2074 frame->prepare = prepare_schedule;
2075 frame->check = slf_check_nop;
2076}
2077
2078static void
2079slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2080{
2081 struct coro *next = (struct coro *)slf_frame.data;
2082
2083 SvREFCNT_inc_NN (next->hv);
2084 prepare_schedule_to (aTHX_ ta, next);
2085}
2086
2087static void
2088slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2089{
2090 if (!items)
2091 croak ("Coro::schedule_to expects a coroutine argument, caught");
2092
2093 frame->data = (void *)SvSTATE (arg [0]);
2094 frame->prepare = slf_prepare_schedule_to;
2095 frame->check = slf_check_nop;
2096}
2097
2098static void
2099slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2100{
2101 api_ready (aTHX_ SvRV (coro_current));
2102
2103 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2104}
2105
2106static void
2107slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2108{
2109 frame->prepare = prepare_cede;
2110 frame->check = slf_check_nop;
2111}
2112
2113static void
2114slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 frame->prepare = prepare_cede_notself;
2117 frame->check = slf_check_nop;
2118}
2119
2120/*
2121 * these not obviously related functions are all rolled into one
2122 * function to increase chances that they all will call transfer with the same
2123 * stack offset
2124 * SLF stands for "schedule-like-function".
2125 */
2126static OP *
2127pp_slf (pTHX)
2128{
2129 I32 checkmark; /* mark SP to see how many elements check has pushed */
2130
2131 /* set up the slf frame, unless it has already been set-up */
2132 /* the latter happens when a new coro has been started */
2133 /* or when a new cctx was attached to an existing coroutine */
2134 if (expect_true (!slf_frame.prepare))
2135 {
2136 /* first iteration */
2137 dSP;
2138 SV **arg = PL_stack_base + TOPMARK + 1;
2139 int items = SP - arg; /* args without function object */
2140 SV *gv = *sp;
2141
2142 /* do a quick consistency check on the "function" object, and if it isn't */
2143 /* for us, divert to the real entersub */
2144 if (SvTYPE (gv) != SVt_PVGV
2145 || !GvCV (gv)
2146 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2147 return PL_ppaddr[OP_ENTERSUB](aTHX);
2148
2149 if (!(PL_op->op_flags & OPf_STACKED))
2150 {
2151 /* ampersand-form of call, use @_ instead of stack */
2152 AV *av = GvAV (PL_defgv);
2153 arg = AvARRAY (av);
2154 items = AvFILLp (av) + 1;
2155 }
2156
2157 /* now call the init function, which needs to set up slf_frame */
2158 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2159 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2160
2161 /* pop args */
2162 SP = PL_stack_base + POPMARK;
2163
2164 PUTBACK;
2165 }
2166
2167 /* now that we have a slf_frame, interpret it! */
2168 /* we use a callback system not to make the code needlessly */
2169 /* complicated, but so we can run multiple perl coros from one cctx */
2170
2171 do
2172 {
2173 struct coro_transfer_args ta;
2174
2175 slf_frame.prepare (aTHX_ &ta);
2176 TRANSFER (ta, 0);
2177
2178 checkmark = PL_stack_sp - PL_stack_base;
2179 }
2180 while (slf_frame.check (aTHX_ &slf_frame));
2181
2182 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2183
2184 /* exception handling */
2185 if (expect_false (CORO_THROW))
2186 {
2187 SV *exception = sv_2mortal (CORO_THROW);
2188
2189 CORO_THROW = 0;
2190 sv_setsv (ERRSV, exception);
2191 croak (0);
2192 }
2193
2194 /* return value handling - mostly like entersub */
2195 /* make sure we put something on the stack in scalar context */
2196 if (GIMME_V == G_SCALAR)
2197 {
2198 dSP;
2199 SV **bot = PL_stack_base + checkmark;
2200
2201 if (sp == bot) /* too few, push undef */
2202 bot [1] = &PL_sv_undef;
2203 else if (sp != bot + 1) /* too many, take last one */
2204 bot [1] = *sp;
2205
2206 SP = bot + 1;
2207
2208 PUTBACK;
2209 }
2210
2211 return NORMAL;
2212}
2213
2214static void
2215api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2216{
2217 int i;
2218 SV **arg = PL_stack_base + ax;
2219 int items = PL_stack_sp - arg + 1;
2220
2221 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2222
2223 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2224 && PL_op->op_ppaddr != pp_slf)
2225 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2226
2227 CvFLAGS (cv) |= CVf_SLF;
2228 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2229 slf_cv = cv;
2230
2231 /* we patch the op, and then re-run the whole call */
2232 /* we have to put the same argument on the stack for this to work */
2233 /* and this will be done by pp_restore */
2234 slf_restore.op_next = (OP *)&slf_restore;
2235 slf_restore.op_type = OP_CUSTOM;
2236 slf_restore.op_ppaddr = pp_restore;
2237 slf_restore.op_first = PL_op;
2238
2239 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2240
2241 if (PL_op->op_flags & OPf_STACKED)
2242 {
2243 if (items > slf_arga)
2244 {
2245 slf_arga = items;
2246 free (slf_argv);
2247 slf_argv = malloc (slf_arga * sizeof (SV *));
2248 }
2249
2250 slf_argc = items;
2251
2252 for (i = 0; i < items; ++i)
2253 slf_argv [i] = SvREFCNT_inc (arg [i]);
2254 }
2255 else
2256 slf_argc = 0;
2257
2258 PL_op->op_ppaddr = pp_slf;
2259 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2260
2261 PL_op = (OP *)&slf_restore;
2262}
2263
2264/*****************************************************************************/
2265/* PerlIO::cede */
2266
2267typedef struct
2268{
2269 PerlIOBuf base;
2270 NV next, every;
2271} PerlIOCede;
2272
2273static IV
2274PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2275{
2276 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2277
2278 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2279 self->next = nvtime () + self->every;
2280
2281 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2282}
2283
2284static SV *
2285PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2286{
2287 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2288
2289 return newSVnv (self->every);
2290}
2291
2292static IV
2293PerlIOCede_flush (pTHX_ PerlIO *f)
2294{
2295 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2296 double now = nvtime ();
2297
2298 if (now >= self->next)
2299 {
2300 api_cede (aTHX);
2301 self->next = now + self->every;
2302 }
2303
2304 return PerlIOBuf_flush (aTHX_ f);
2305}
2306
2307static PerlIO_funcs PerlIO_cede =
2308{
2309 sizeof(PerlIO_funcs),
2310 "cede",
2311 sizeof(PerlIOCede),
2312 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2313 PerlIOCede_pushed,
2314 PerlIOBuf_popped,
2315 PerlIOBuf_open,
2316 PerlIOBase_binmode,
2317 PerlIOCede_getarg,
2318 PerlIOBase_fileno,
2319 PerlIOBuf_dup,
2320 PerlIOBuf_read,
2321 PerlIOBuf_unread,
2322 PerlIOBuf_write,
2323 PerlIOBuf_seek,
2324 PerlIOBuf_tell,
2325 PerlIOBuf_close,
2326 PerlIOCede_flush,
2327 PerlIOBuf_fill,
2328 PerlIOBase_eof,
2329 PerlIOBase_error,
2330 PerlIOBase_clearerr,
2331 PerlIOBase_setlinebuf,
2332 PerlIOBuf_get_base,
2333 PerlIOBuf_bufsiz,
2334 PerlIOBuf_get_ptr,
2335 PerlIOBuf_get_cnt,
2336 PerlIOBuf_set_ptrcnt,
2337};
2338
2339/*****************************************************************************/
2340/* Coro::Semaphore & Coro::Signal */
2341
2342static SV *
2343coro_waitarray_new (pTHX_ int count)
2344{
2345 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2346 AV *av = newAV ();
2347 SV **ary;
2348
2349 /* unfortunately, building manually saves memory */
2350 Newx (ary, 2, SV *);
2351 AvALLOC (av) = ary;
2352 /*AvARRAY (av) = ary;*/
2353 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2354 AvMAX (av) = 1;
2355 AvFILLp (av) = 0;
2356 ary [0] = newSViv (count);
2357
2358 return newRV_noinc ((SV *)av);
2359}
2360
2361/* semaphore */
2362
2363static void
2364coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2365{
2366 SV *count_sv = AvARRAY (av)[0];
2367 IV count = SvIVX (count_sv);
2368
2369 count += adjust;
2370 SvIVX (count_sv) = count;
2371
2372 /* now wake up as many waiters as are expected to lock */
2373 while (count > 0 && AvFILLp (av) > 0)
2374 {
2375 SV *cb;
2376
2377 /* swap first two elements so we can shift a waiter */
2378 AvARRAY (av)[0] = AvARRAY (av)[1];
2379 AvARRAY (av)[1] = count_sv;
2380 cb = av_shift (av);
2381
2382 if (SvOBJECT (cb))
2383 {
2384 api_ready (aTHX_ cb);
2385 --count;
2386 }
2387 else if (SvTYPE (cb) == SVt_PVCV)
1231 { 2388 {
1232 dSP; 2389 dSP;
1233 UNLOCK;
1234
1235 ENTER;
1236 SAVETMPS;
1237
1238 PUSHMARK (SP); 2390 PUSHMARK (SP);
2391 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1239 PUTBACK; 2392 PUTBACK;
1240 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 2393 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1241
1242 FREETMPS;
1243 LEAVE;
1244 continue;
1245 } 2394 }
1246 2395
1247 ta->next = SvSTATE (next_sv); 2396 SvREFCNT_dec (cb);
2397 }
2398}
1248 2399
1249 /* cannot transfer to destroyed coros, skip and look for next */ 2400static void
1250 if (ta->next->flags & CF_DESTROYED) 2401coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2402{
2403 /* call $sem->adjust (0) to possibly wake up some other waiters */
2404 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2405}
2406
2407static int
2408slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2409{
2410 AV *av = (AV *)frame->data;
2411 SV *count_sv = AvARRAY (av)[0];
2412
2413 /* if we are about to throw, don't actually acquire the lock, just throw */
2414 if (CORO_THROW)
2415 return 0;
2416 else if (SvIVX (count_sv) > 0)
2417 {
2418 SvSTATE_current->on_destroy = 0;
2419
2420 if (acquire)
2421 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2422 else
2423 coro_semaphore_adjust (aTHX_ av, 0);
2424
2425 return 0;
2426 }
2427 else
2428 {
2429 int i;
2430 /* if we were woken up but can't down, we look through the whole */
2431 /* waiters list and only add us if we aren't in there already */
2432 /* this avoids some degenerate memory usage cases */
2433
2434 for (i = 1; i <= AvFILLp (av); ++i)
2435 if (AvARRAY (av)[i] == SvRV (coro_current))
2436 return 1;
2437
2438 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2439 return 1;
2440 }
2441}
2442
2443static int
2444slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2445{
2446 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2447}
2448
2449static int
2450slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2451{
2452 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2453}
2454
2455static void
2456slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2457{
2458 AV *av = (AV *)SvRV (arg [0]);
2459
2460 if (SvIVX (AvARRAY (av)[0]) > 0)
2461 {
2462 frame->data = (void *)av;
2463 frame->prepare = prepare_nop;
2464 }
2465 else
2466 {
2467 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2468
2469 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2470 frame->prepare = prepare_schedule;
2471
2472 /* to avoid race conditions when a woken-up coro gets terminated */
2473 /* we arrange for a temporary on_destroy that calls adjust (0) */
2474 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2475 }
2476}
2477
2478static void
2479slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2482 frame->check = slf_check_semaphore_down;
2483}
2484
2485static void
2486slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2487{
2488 if (items >= 2)
2489 {
2490 /* callback form */
2491 AV *av = (AV *)SvRV (arg [0]);
2492 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2493
2494 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2495
2496 if (SvIVX (AvARRAY (av)[0]) > 0)
2497 coro_semaphore_adjust (aTHX_ av, 0);
2498
2499 frame->prepare = prepare_nop;
2500 frame->check = slf_check_nop;
2501 }
2502 else
2503 {
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_wait;
2506 }
2507}
2508
2509/* signal */
2510
2511static void
2512coro_signal_wake (pTHX_ AV *av, int count)
2513{
2514 SvIVX (AvARRAY (av)[0]) = 0;
2515
2516 /* now signal count waiters */
2517 while (count > 0 && AvFILLp (av) > 0)
2518 {
2519 SV *cb;
2520
2521 /* swap first two elements so we can shift a waiter */
2522 cb = AvARRAY (av)[0];
2523 AvARRAY (av)[0] = AvARRAY (av)[1];
2524 AvARRAY (av)[1] = cb;
2525
2526 cb = av_shift (av);
2527
2528 api_ready (aTHX_ cb);
2529 sv_setiv (cb, 0); /* signal waiter */
2530 SvREFCNT_dec (cb);
2531
2532 --count;
2533 }
2534}
2535
2536static int
2537slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2538{
2539 /* if we are about to throw, also stop waiting */
2540 return SvROK ((SV *)frame->data) && !CORO_THROW;
2541}
2542
2543static void
2544slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2545{
2546 AV *av = (AV *)SvRV (arg [0]);
2547
2548 if (SvIVX (AvARRAY (av)[0]))
2549 {
2550 SvIVX (AvARRAY (av)[0]) = 0;
2551 frame->prepare = prepare_nop;
2552 frame->check = slf_check_nop;
2553 }
2554 else
2555 {
2556 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2557
2558 av_push (av, waiter);
2559
2560 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2561 frame->prepare = prepare_schedule;
2562 frame->check = slf_check_signal_wait;
2563 }
2564}
2565
2566/*****************************************************************************/
2567/* Coro::AIO */
2568
2569#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2570
2571/* helper storage struct */
2572struct io_state
2573{
2574 int errorno;
2575 I32 laststype; /* U16 in 5.10.0 */
2576 int laststatval;
2577 Stat_t statcache;
2578};
2579
2580static void
2581coro_aio_callback (pTHX_ CV *cv)
2582{
2583 dXSARGS;
2584 AV *state = (AV *)GENSUB_ARG;
2585 SV *coro = av_pop (state);
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587
2588 av_extend (state, items - 1);
2589
2590 sv_upgrade (data_sv, SVt_PV);
2591 SvCUR_set (data_sv, sizeof (struct io_state));
2592 SvPOK_only (data_sv);
2593
2594 {
2595 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2596
2597 data->errorno = errno;
2598 data->laststype = PL_laststype;
2599 data->laststatval = PL_laststatval;
2600 data->statcache = PL_statcache;
2601 }
2602
2603 /* now build the result vector out of all the parameters and the data_sv */
2604 {
2605 int i;
2606
2607 for (i = 0; i < items; ++i)
2608 av_push (state, SvREFCNT_inc_NN (ST (i)));
2609 }
2610
2611 av_push (state, data_sv);
2612
2613 api_ready (aTHX_ coro);
2614 SvREFCNT_dec (coro);
2615 SvREFCNT_dec ((AV *)state);
2616}
2617
2618static int
2619slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2620{
2621 AV *state = (AV *)frame->data;
2622
2623 /* if we are about to throw, return early */
2624 /* this does not cancel the aio request, but at least */
2625 /* it quickly returns */
2626 if (CORO_THROW)
2627 return 0;
2628
2629 /* one element that is an RV? repeat! */
2630 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2631 return 1;
2632
2633 /* restore status */
2634 {
2635 SV *data_sv = av_pop (state);
2636 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2637
2638 errno = data->errorno;
2639 PL_laststype = data->laststype;
2640 PL_laststatval = data->laststatval;
2641 PL_statcache = data->statcache;
2642
2643 SvREFCNT_dec (data_sv);
2644 }
2645
2646 /* push result values */
2647 {
2648 dSP;
2649 int i;
2650
2651 EXTEND (SP, AvFILLp (state) + 1);
2652 for (i = 0; i <= AvFILLp (state); ++i)
2653 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2654
2655 PUTBACK;
2656 }
2657
2658 return 0;
2659}
2660
2661static void
2662slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2663{
2664 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2665 SV *coro_hv = SvRV (coro_current);
2666 struct coro *coro = SvSTATE_hv (coro_hv);
2667
2668 /* put our coroutine id on the state arg */
2669 av_push (state, SvREFCNT_inc_NN (coro_hv));
2670
2671 /* first see whether we have a non-zero priority and set it as AIO prio */
2672 if (coro->prio)
2673 {
2674 dSP;
2675
2676 static SV *prio_cv;
2677 static SV *prio_sv;
2678
2679 if (expect_false (!prio_cv))
1251 { 2680 {
1252 UNLOCK; 2681 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
1253 SvREFCNT_dec (next_sv); 2682 prio_sv = newSViv (0);
1254 /* coro_nready is already taken care of by destroy */
1255 continue;
1256 } 2683 }
1257 2684
1258 --coro_nready; 2685 PUSHMARK (SP);
1259 UNLOCK; 2686 sv_setiv (prio_sv, coro->prio);
1260 break; 2687 XPUSHs (prio_sv);
1261 }
1262 2688
1263 /* free this only after the transfer */ 2689 PUTBACK;
1264 prev_sv = SvRV (coro_current); 2690 call_sv (prio_cv, G_VOID | G_DISCARD);
1265 ta->prev = SvSTATE (prev_sv);
1266 TRANSFER_CHECK (*ta);
1267 assert (ta->next->flags & CF_READY);
1268 ta->next->flags &= ~CF_READY;
1269 SvRV_set (coro_current, next_sv);
1270
1271 LOCK;
1272 free_coro_mortal (aTHX);
1273 coro_mortal = prev_sv;
1274 UNLOCK;
1275}
1276
1277static void
1278prepare_cede (pTHX_ struct transfer_args *ta)
1279{
1280 api_ready (coro_current);
1281 prepare_schedule (aTHX_ ta);
1282}
1283
1284static int
1285prepare_cede_notself (pTHX_ struct transfer_args *ta)
1286{
1287 if (coro_nready)
1288 { 2691 }
1289 SV *prev = SvRV (coro_current); 2692
1290 prepare_schedule (aTHX_ ta); 2693 /* now call the original request */
1291 api_ready (prev); 2694 {
1292 return 1; 2695 dSP;
2696 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2697 int i;
2698
2699 PUSHMARK (SP);
2700
2701 /* first push all args to the stack */
2702 EXTEND (SP, items + 1);
2703
2704 for (i = 0; i < items; ++i)
2705 PUSHs (arg [i]);
2706
2707 /* now push the callback closure */
2708 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2709
2710 /* now call the AIO function - we assume our request is uncancelable */
2711 PUTBACK;
2712 call_sv ((SV *)req, G_VOID | G_DISCARD);
1293 } 2713 }
1294 else
1295 return 0;
1296}
1297 2714
1298static void 2715 /* now that the requets is going, we loop toll we have a result */
1299api_schedule (void) 2716 frame->data = (void *)state;
1300{ 2717 frame->prepare = prepare_schedule;
1301 dTHX; 2718 frame->check = slf_check_aio_req;
1302 struct transfer_args ta;
1303
1304 prepare_schedule (aTHX_ &ta);
1305 TRANSFER (ta);
1306} 2719}
1307 2720
1308static int 2721static void
1309api_cede (void) 2722coro_aio_req_xs (pTHX_ CV *cv)
1310{ 2723{
1311 dTHX; 2724 dXSARGS;
1312 struct transfer_args ta;
1313 2725
1314 prepare_cede (aTHX_ &ta); 2726 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1315 2727
1316 if (ta.prev != ta.next) 2728 XSRETURN_EMPTY;
1317 {
1318 TRANSFER (ta);
1319 return 1;
1320 }
1321 else
1322 return 0;
1323} 2729}
1324 2730
1325static int 2731/*****************************************************************************/
1326api_cede_notself (void)
1327{
1328 dTHX;
1329 struct transfer_args ta;
1330 2732
1331 if (prepare_cede_notself (aTHX_ &ta)) 2733#if CORO_CLONE
1332 { 2734# include "clone.c"
1333 TRANSFER (ta); 2735#endif
1334 return 1;
1335 }
1336 else
1337 return 0;
1338}
1339 2736
1340MODULE = Coro::State PACKAGE = Coro::State 2737MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1341 2738
1342PROTOTYPES: DISABLE 2739PROTOTYPES: DISABLE
1343 2740
1344BOOT: 2741BOOT:
1345{ 2742{
1346#ifdef USE_ITHREADS 2743#ifdef USE_ITHREADS
1347 MUTEX_INIT (&coro_mutex); 2744# if CORO_PTHREAD
2745 coro_thx = PERL_GET_CONTEXT;
2746# endif
1348#endif 2747#endif
1349 BOOT_PAGESIZE; 2748 BOOT_PAGESIZE;
2749
2750 cctx_current = cctx_new_empty ();
2751
2752 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2753 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2754
2755 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2756 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2757 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2758
2759 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2760 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2761 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1350 2762
1351 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2763 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1352 2764
1353 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2765 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1354 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2766 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1355 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 2767 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1356 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 2768 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1357 2769
1358 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1359 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1360 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1361 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1362 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1363 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1364 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1365
1366 main_mainstack = PL_mainstack; 2770 main_mainstack = PL_mainstack;
1367 main_top_env = PL_top_env; 2771 main_top_env = PL_top_env;
1368 2772
1369 while (main_top_env->je_prev) 2773 while (main_top_env->je_prev)
1370 main_top_env = main_top_env->je_prev; 2774 main_top_env = main_top_env->je_prev;
1371 2775
2776 {
2777 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2778
2779 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2780 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2781
2782 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2783 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2784 }
2785
1372 coroapi.ver = CORO_API_VERSION; 2786 coroapi.ver = CORO_API_VERSION;
2787 coroapi.rev = CORO_API_REVISION;
2788
1373 coroapi.transfer = api_transfer; 2789 coroapi.transfer = api_transfer;
2790
2791 coroapi.sv_state = SvSTATE_;
2792 coroapi.execute_slf = api_execute_slf;
2793 coroapi.prepare_nop = prepare_nop;
2794 coroapi.prepare_schedule = prepare_schedule;
2795 coroapi.prepare_cede = prepare_cede;
2796 coroapi.prepare_cede_notself = prepare_cede_notself;
2797
2798 {
2799 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2800
2801 if (!svp) croak ("Time::HiRes is required");
2802 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2803
2804 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2805 }
1374 2806
1375 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2807 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1376} 2808}
1377 2809
1378SV * 2810SV *
1379new (char *klass, ...) 2811new (char *klass, ...)
2812 ALIAS:
2813 Coro::new = 1
1380 CODE: 2814 CODE:
1381{ 2815{
1382 struct coro *coro; 2816 struct coro *coro;
2817 MAGIC *mg;
1383 HV *hv; 2818 HV *hv;
2819 CV *cb;
1384 int i; 2820 int i;
1385 2821
2822 if (items > 1)
2823 {
2824 cb = coro_sv_2cv (aTHX_ ST (1));
2825
2826 if (!ix)
2827 {
2828 if (CvISXSUB (cb))
2829 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2830
2831 if (!CvROOT (cb))
2832 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2833 }
2834 }
2835
1386 Newz (0, coro, 1, struct coro); 2836 Newz (0, coro, 1, struct coro);
1387 coro->args = newAV (); 2837 coro->args = newAV ();
1388 coro->save = CORO_SAVE_DEF;
1389 coro->flags = CF_NEW; 2838 coro->flags = CF_NEW;
1390 2839
1391 if (coro_first) coro_first->prev = coro; 2840 if (coro_first) coro_first->prev = coro;
1392 coro->next = coro_first; 2841 coro->next = coro_first;
1393 coro_first = coro; 2842 coro_first = coro;
1394 2843
1395 coro->hv = hv = newHV (); 2844 coro->hv = hv = newHV ();
1396 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2845 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2846 mg->mg_flags |= MGf_DUP;
1397 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2847 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1398 2848
2849 if (items > 1)
2850 {
2851 av_extend (coro->args, items - 1 + ix - 1);
2852
2853 if (ix)
2854 {
2855 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2856 cb = cv_coro_run;
2857 }
2858
2859 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2860
1399 for (i = 1; i < items; i++) 2861 for (i = 2; i < items; i++)
1400 av_push (coro->args, newSVsv (ST (i))); 2862 av_push (coro->args, newSVsv (ST (i)));
2863 }
1401} 2864}
1402 OUTPUT: 2865 OUTPUT:
1403 RETVAL 2866 RETVAL
1404 2867
1405int 2868void
1406save (SV *coro, int new_save = -1) 2869transfer (...)
2870 PROTOTYPE: $$
1407 CODE: 2871 CODE:
1408 RETVAL = api_save (coro, new_save); 2872 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1409 OUTPUT:
1410 RETVAL
1411
1412int
1413save_also (SV *coro_sv, int save_also)
1414 CODE:
1415{
1416 struct coro *coro = SvSTATE (coro_sv);
1417 RETVAL = coro->save;
1418 coro->save |= save_also;
1419}
1420 OUTPUT:
1421 RETVAL
1422
1423void
1424_set_stacklevel (...)
1425 ALIAS:
1426 Coro::State::transfer = 1
1427 Coro::schedule = 2
1428 Coro::cede = 3
1429 Coro::cede_notself = 4
1430 CODE:
1431{
1432 struct transfer_args ta;
1433
1434 switch (ix)
1435 {
1436 case 0:
1437 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1438 ta.next = 0;
1439 break;
1440
1441 case 1:
1442 if (items != 2)
1443 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1444
1445 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1446 break;
1447
1448 case 2:
1449 prepare_schedule (aTHX_ &ta);
1450 break;
1451
1452 case 3:
1453 prepare_cede (aTHX_ &ta);
1454 break;
1455
1456 case 4:
1457 if (!prepare_cede_notself (aTHX_ &ta))
1458 XSRETURN_EMPTY;
1459
1460 break;
1461 }
1462
1463 BARRIER;
1464 TRANSFER (ta);
1465
1466 if (GIMME_V != G_VOID && ta.next != ta.prev)
1467 XSRETURN_YES;
1468}
1469 2873
1470bool 2874bool
1471_destroy (SV *coro_sv) 2875_destroy (SV *coro_sv)
1472 CODE: 2876 CODE:
1473 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2877 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1474 OUTPUT: 2878 OUTPUT:
1475 RETVAL 2879 RETVAL
1476 2880
1477void 2881void
1478_exit (code) 2882_exit (int code)
1479 int code
1480 PROTOTYPE: $ 2883 PROTOTYPE: $
1481 CODE: 2884 CODE:
1482 _exit (code); 2885 _exit (code);
1483 2886
2887SV *
2888clone (Coro::State coro)
2889 CODE:
2890{
2891#if CORO_CLONE
2892 struct coro *ncoro = coro_clone (coro);
2893 MAGIC *mg;
2894 /* TODO: too much duplication */
2895 ncoro->hv = newHV ();
2896 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2897 mg->mg_flags |= MGf_DUP;
2898 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2899#else
2900 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2901#endif
2902}
2903 OUTPUT:
2904 RETVAL
2905
1484int 2906int
1485cctx_stacksize (int new_stacksize = 0) 2907cctx_stacksize (int new_stacksize = 0)
2908 PROTOTYPE: ;$
1486 CODE: 2909 CODE:
1487 RETVAL = coro_stacksize; 2910 RETVAL = cctx_stacksize;
1488 if (new_stacksize) 2911 if (new_stacksize)
2912 {
1489 coro_stacksize = new_stacksize; 2913 cctx_stacksize = new_stacksize;
2914 ++cctx_gen;
2915 }
1490 OUTPUT: 2916 OUTPUT:
1491 RETVAL 2917 RETVAL
1492 2918
1493int 2919int
2920cctx_max_idle (int max_idle = 0)
2921 PROTOTYPE: ;$
2922 CODE:
2923 RETVAL = cctx_max_idle;
2924 if (max_idle > 1)
2925 cctx_max_idle = max_idle;
2926 OUTPUT:
2927 RETVAL
2928
2929int
1494cctx_count () 2930cctx_count ()
2931 PROTOTYPE:
1495 CODE: 2932 CODE:
1496 RETVAL = cctx_count; 2933 RETVAL = cctx_count;
1497 OUTPUT: 2934 OUTPUT:
1498 RETVAL 2935 RETVAL
1499 2936
1500int 2937int
1501cctx_idle () 2938cctx_idle ()
2939 PROTOTYPE:
1502 CODE: 2940 CODE:
1503 RETVAL = cctx_idle; 2941 RETVAL = cctx_idle;
1504 OUTPUT: 2942 OUTPUT:
1505 RETVAL 2943 RETVAL
1506 2944
1507void 2945void
1508list () 2946list ()
2947 PROTOTYPE:
1509 PPCODE: 2948 PPCODE:
1510{ 2949{
1511 struct coro *coro; 2950 struct coro *coro;
1512 for (coro = coro_first; coro; coro = coro->next) 2951 for (coro = coro_first; coro; coro = coro->next)
1513 if (coro->hv) 2952 if (coro->hv)
… …
1518call (Coro::State coro, SV *coderef) 2957call (Coro::State coro, SV *coderef)
1519 ALIAS: 2958 ALIAS:
1520 eval = 1 2959 eval = 1
1521 CODE: 2960 CODE:
1522{ 2961{
1523 if (coro->mainstack) 2962 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1524 { 2963 {
1525 struct coro temp; 2964 struct coro temp;
1526 Zero (&temp, 1, struct coro);
1527 temp.save = CORO_SAVE_ALL;
1528 2965
1529 if (!(coro->flags & CF_RUNNING)) 2966 if (!(coro->flags & CF_RUNNING))
1530 { 2967 {
2968 PUTBACK;
1531 save_perl (aTHX_ &temp); 2969 save_perl (aTHX_ &temp);
1532 load_perl (aTHX_ coro); 2970 load_perl (aTHX_ coro);
1533 } 2971 }
1534 2972
1535 { 2973 {
1536 dSP; 2974 dSP;
1537 ENTER; 2975 ENTER;
1538 SAVETMPS; 2976 SAVETMPS;
2977 PUTBACK;
2978 PUSHSTACK;
1539 PUSHMARK (SP); 2979 PUSHMARK (SP);
1540 PUTBACK; 2980
1541 if (ix) 2981 if (ix)
1542 eval_sv (coderef, 0); 2982 eval_sv (coderef, 0);
1543 else 2983 else
1544 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2984 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2985
2986 POPSTACK;
1545 SPAGAIN; 2987 SPAGAIN;
1546 FREETMPS; 2988 FREETMPS;
1547 LEAVE; 2989 LEAVE;
1548 PUTBACK; 2990 PUTBACK;
1549 } 2991 }
1550 2992
1551 if (!(coro->flags & CF_RUNNING)) 2993 if (!(coro->flags & CF_RUNNING))
1552 { 2994 {
1553 save_perl (aTHX_ coro); 2995 save_perl (aTHX_ coro);
1554 load_perl (aTHX_ &temp); 2996 load_perl (aTHX_ &temp);
2997 SPAGAIN;
1555 } 2998 }
1556 } 2999 }
1557} 3000}
1558 3001
1559SV * 3002SV *
1560is_ready (Coro::State coro) 3003is_ready (Coro::State coro)
1561 PROTOTYPE: $ 3004 PROTOTYPE: $
1562 ALIAS: 3005 ALIAS:
1563 is_ready = CF_READY 3006 is_ready = CF_READY
… …
1568 RETVAL = boolSV (coro->flags & ix); 3011 RETVAL = boolSV (coro->flags & ix);
1569 OUTPUT: 3012 OUTPUT:
1570 RETVAL 3013 RETVAL
1571 3014
1572void 3015void
3016throw (Coro::State self, SV *throw = &PL_sv_undef)
3017 PROTOTYPE: $;$
3018 CODE:
3019{
3020 struct coro *current = SvSTATE_current;
3021 SV **throwp = self == current ? &CORO_THROW : &self->except;
3022 SvREFCNT_dec (*throwp);
3023 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3024}
3025
3026void
1573trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB) 3027api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1574 CODE: 3028 PROTOTYPE: $;$
1575 if (flags & CC_TRACE) 3029 C_ARGS: aTHX_ coro, flags
1576 {
1577 if (!coro->cctx)
1578 coro->cctx = cctx_new ();
1579 else if (!(coro->cctx->flags & CC_TRACE))
1580 croak ("cannot enable tracing on coroutine with custom stack");
1581
1582 coro->cctx->flags |= flags & (CC_TRACE | CC_TRACE_ALL);
1583 }
1584 else
1585 if (coro->cctx && coro->cctx->flags & CC_TRACE)
1586 {
1587 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1588 coro->cctx->flags |= CC_NOREUSE;
1589
1590 if (coro->flags & CF_RUNNING)
1591 PL_runops = RUNOPS_DEFAULT;
1592 else
1593 coro->runops = RUNOPS_DEFAULT;
1594 }
1595 3030
1596SV * 3031SV *
1597has_stack (Coro::State coro) 3032has_cctx (Coro::State coro)
1598 PROTOTYPE: $ 3033 PROTOTYPE: $
1599 CODE: 3034 CODE:
1600 RETVAL = boolSV (!!coro->cctx); 3035 /* maybe manage the running flag differently */
3036 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1601 OUTPUT: 3037 OUTPUT:
1602 RETVAL 3038 RETVAL
1603 3039
1604int 3040int
1605is_traced (Coro::State coro) 3041is_traced (Coro::State coro)
… …
1607 CODE: 3043 CODE:
1608 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3044 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1609 OUTPUT: 3045 OUTPUT:
1610 RETVAL 3046 RETVAL
1611 3047
1612IV 3048UV
1613rss (Coro::State coro) 3049rss (Coro::State coro)
1614 PROTOTYPE: $ 3050 PROTOTYPE: $
3051 ALIAS:
3052 usecount = 1
1615 CODE: 3053 CODE:
3054 switch (ix)
3055 {
1616 RETVAL = coro_rss (aTHX_ coro); 3056 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3057 case 1: RETVAL = coro->usecount; break;
3058 }
1617 OUTPUT: 3059 OUTPUT:
1618 RETVAL 3060 RETVAL
1619 3061
3062void
3063force_cctx ()
3064 PROTOTYPE:
3065 CODE:
3066 cctx_current->idle_sp = 0;
3067
3068void
3069swap_defsv (Coro::State self)
3070 PROTOTYPE: $
3071 ALIAS:
3072 swap_defav = 1
3073 CODE:
3074 if (!self->slot)
3075 croak ("cannot swap state with coroutine that has no saved state,");
3076 else
3077 {
3078 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3079 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3080
3081 SV *tmp = *src; *src = *dst; *dst = tmp;
3082 }
3083
1620 3084
1621MODULE = Coro::State PACKAGE = Coro 3085MODULE = Coro::State PACKAGE = Coro
1622 3086
1623BOOT: 3087BOOT:
1624{ 3088{
1625 int i; 3089 int i;
1626 3090
1627 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3091 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1628 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3092 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3093 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3094 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3095 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1629 av_async_pool = get_av ("Coro::async_pool", TRUE); 3096 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3097 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3098 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
1630 3099
1631 coro_current = get_sv ("Coro::current", FALSE); 3100 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1632 SvREADONLY_on (coro_current); 3101 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3102 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3103 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1633 3104
1634 coro_stash = gv_stashpv ("Coro", TRUE); 3105 coro_stash = gv_stashpv ("Coro", TRUE);
1635 3106
1636 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3107 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1637 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3108 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1638 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3109 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1639 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3110 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1642 3113
1643 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3114 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1644 coro_ready[i] = newAV (); 3115 coro_ready[i] = newAV ();
1645 3116
1646 { 3117 {
1647 SV *sv = perl_get_sv("Coro::API", 1); 3118 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1648 3119
1649 coroapi.schedule = api_schedule; 3120 coroapi.schedule = api_schedule;
1650 coroapi.save = api_save; 3121 coroapi.schedule_to = api_schedule_to;
1651 coroapi.cede = api_cede; 3122 coroapi.cede = api_cede;
1652 coroapi.cede_notself = api_cede_notself; 3123 coroapi.cede_notself = api_cede_notself;
1653 coroapi.ready = api_ready; 3124 coroapi.ready = api_ready;
1654 coroapi.is_ready = api_is_ready; 3125 coroapi.is_ready = api_is_ready;
1655 coroapi.nready = &coro_nready; 3126 coroapi.nready = coro_nready;
1656 coroapi.current = coro_current; 3127 coroapi.current = coro_current;
1657 3128
1658 GCoroAPI = &coroapi; 3129 /*GCoroAPI = &coroapi;*/
1659 sv_setiv (sv, (IV)&coroapi); 3130 sv_setiv (sv, (IV)&coroapi);
1660 SvREADONLY_on (sv); 3131 SvREADONLY_on (sv);
1661 } 3132 }
1662} 3133}
3134
3135void
3136terminate (...)
3137 CODE:
3138 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3139
3140void
3141schedule (...)
3142 CODE:
3143 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3144
3145void
3146schedule_to (...)
3147 CODE:
3148 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3149
3150void
3151cede_to (...)
3152 CODE:
3153 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3154
3155void
3156cede (...)
3157 CODE:
3158 CORO_EXECUTE_SLF_XS (slf_init_cede);
3159
3160void
3161cede_notself (...)
3162 CODE:
3163 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3164
3165void
3166_cancel (Coro::State self)
3167 CODE:
3168 coro_state_destroy (aTHX_ self);
3169 coro_call_on_destroy (aTHX_ self);
1663 3170
1664void 3171void
1665_set_current (SV *current) 3172_set_current (SV *current)
1666 PROTOTYPE: $ 3173 PROTOTYPE: $
1667 CODE: 3174 CODE:
1668 SvREFCNT_dec (SvRV (coro_current)); 3175 SvREFCNT_dec (SvRV (coro_current));
1669 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3176 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3177
3178void
3179_set_readyhook (SV *hook)
3180 PROTOTYPE: $
3181 CODE:
3182 SvREFCNT_dec (coro_readyhook);
3183 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1670 3184
1671int 3185int
1672prio (Coro::State coro, int newprio = 0) 3186prio (Coro::State coro, int newprio = 0)
3187 PROTOTYPE: $;$
1673 ALIAS: 3188 ALIAS:
1674 nice = 1 3189 nice = 1
1675 CODE: 3190 CODE:
1676{ 3191{
1677 RETVAL = coro->prio; 3192 RETVAL = coro->prio;
… …
1692 3207
1693SV * 3208SV *
1694ready (SV *self) 3209ready (SV *self)
1695 PROTOTYPE: $ 3210 PROTOTYPE: $
1696 CODE: 3211 CODE:
1697 RETVAL = boolSV (api_ready (self)); 3212 RETVAL = boolSV (api_ready (aTHX_ self));
1698 OUTPUT: 3213 OUTPUT:
1699 RETVAL 3214 RETVAL
1700 3215
1701int 3216int
1702nready (...) 3217nready (...)
… …
1704 CODE: 3219 CODE:
1705 RETVAL = coro_nready; 3220 RETVAL = coro_nready;
1706 OUTPUT: 3221 OUTPUT:
1707 RETVAL 3222 RETVAL
1708 3223
1709# for async_pool speedup
1710void 3224void
1711_pool_1 (SV *cb) 3225_pool_handler (...)
1712 CODE: 3226 CODE:
1713{ 3227 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1714 int i, len;
1715 HV *hv = (HV *)SvRV (coro_current);
1716 AV *defav = GvAV (PL_defgv);
1717 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1718 AV *invoke_av;
1719 3228
1720 if (!invoke) 3229void
1721 croak ("\3terminate\2\n"); 3230async_pool (SV *cv, ...)
3231 PROTOTYPE: &@
3232 PPCODE:
3233{
3234 HV *hv = (HV *)av_pop (av_async_pool);
3235 AV *av = newAV ();
3236 SV *cb = ST (0);
3237 int i;
1722 3238
1723 hv_store (hv, "desc", sizeof ("desc") - 1, 3239 av_extend (av, items - 2);
1724 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 3240 for (i = 1; i < items; ++i)
3241 av_push (av, SvREFCNT_inc_NN (ST (i)));
1725 3242
1726 invoke_av = (AV *)SvRV (invoke); 3243 if ((SV *)hv == &PL_sv_undef)
1727 len = av_len (invoke_av);
1728
1729 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1730
1731 if (len > 0)
1732 { 3244 {
1733 av_fill (defav, len - 1); 3245 PUSHMARK (SP);
1734 for (i = 0; i < len; ++i) 3246 EXTEND (SP, 2);
1735 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3247 PUSHs (sv_Coro);
3248 PUSHs ((SV *)cv_pool_handler);
3249 PUTBACK;
3250 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3251 SPAGAIN;
3252
3253 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1736 } 3254 }
1737 3255
3256 {
3257 struct coro *coro = SvSTATE_hv (hv);
3258
3259 assert (!coro->invoke_cb);
3260 assert (!coro->invoke_av);
3261 coro->invoke_cb = SvREFCNT_inc (cb);
3262 coro->invoke_av = av;
3263 }
3264
3265 api_ready (aTHX_ (SV *)hv);
3266
3267 if (GIMME_V != G_VOID)
3268 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3269 else
1738 SvREFCNT_dec (invoke); 3270 SvREFCNT_dec (hv);
1739} 3271}
1740 3272
1741void 3273SV *
1742_pool_2 (SV *cb) 3274rouse_cb ()
3275 PROTOTYPE:
1743 CODE: 3276 CODE:
1744{ 3277 RETVAL = coro_new_rouse_cb (aTHX);
1745 struct coro *coro = SvSTATE (coro_current);
1746
1747 sv_setsv (cb, &PL_sv_undef);
1748
1749 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1750 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1751 croak ("\3terminate\2\n");
1752
1753 av_clear (GvAV (PL_defgv));
1754 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1755 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1756 coro->save = CORO_SAVE_DEF;
1757 coro->prio = 0;
1758 av_push (av_async_pool, newSVsv (coro_current));
1759}
1760
1761
1762MODULE = Coro::State PACKAGE = Coro::AIO
1763
1764SV *
1765_get_state ()
1766 CODE:
1767{
1768 struct io_state *data;
1769
1770 RETVAL = newSV (sizeof (struct io_state));
1771 data = (struct io_state *)SvPVX (RETVAL);
1772 SvCUR_set (RETVAL, sizeof (struct io_state));
1773 SvPOK_only (RETVAL);
1774
1775 data->errorno = errno;
1776 data->laststype = PL_laststype;
1777 data->laststatval = PL_laststatval;
1778 data->statcache = PL_statcache;
1779}
1780 OUTPUT: 3278 OUTPUT:
1781 RETVAL 3279 RETVAL
1782 3280
1783void 3281void
1784_set_state (char *data_) 3282rouse_wait (...)
1785 PROTOTYPE: $ 3283 PROTOTYPE: ;$
3284 PPCODE:
3285 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3286
3287
3288MODULE = Coro::State PACKAGE = PerlIO::cede
3289
3290BOOT:
3291 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3292
3293
3294MODULE = Coro::State PACKAGE = Coro::Semaphore
3295
3296SV *
3297new (SV *klass, SV *count = 0)
1786 CODE: 3298 CODE:
1787{ 3299 RETVAL = sv_bless (
1788 struct io_state *data = (void *)data_; 3300 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3301 GvSTASH (CvGV (cv))
3302 );
3303 OUTPUT:
3304 RETVAL
1789 3305
1790 errno = data->errorno; 3306# helper for Coro::Channel
1791 PL_laststype = data->laststype; 3307SV *
1792 PL_laststatval = data->laststatval; 3308_alloc (int count)
1793 PL_statcache = data->statcache; 3309 CODE:
1794} 3310 RETVAL = coro_waitarray_new (aTHX_ count);
3311 OUTPUT:
3312 RETVAL
1795 3313
3314SV *
3315count (SV *self)
3316 CODE:
3317 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3318 OUTPUT:
3319 RETVAL
3320
3321void
3322up (SV *self, int adjust = 1)
3323 ALIAS:
3324 adjust = 1
3325 CODE:
3326 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3327
3328void
3329down (...)
3330 CODE:
3331 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3332
3333void
3334wait (...)
3335 CODE:
3336 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3337
3338void
3339try (SV *self)
3340 PPCODE:
3341{
3342 AV *av = (AV *)SvRV (self);
3343 SV *count_sv = AvARRAY (av)[0];
3344 IV count = SvIVX (count_sv);
3345
3346 if (count > 0)
3347 {
3348 --count;
3349 SvIVX (count_sv) = count;
3350 XSRETURN_YES;
3351 }
3352 else
3353 XSRETURN_NO;
3354}
3355
3356void
3357waiters (SV *self)
3358 PPCODE:
3359{
3360 AV *av = (AV *)SvRV (self);
3361 int wcount = AvFILLp (av) + 1 - 1;
3362
3363 if (GIMME_V == G_SCALAR)
3364 XPUSHs (sv_2mortal (newSViv (wcount)));
3365 else
3366 {
3367 int i;
3368 EXTEND (SP, wcount);
3369 for (i = 1; i <= wcount; ++i)
3370 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3371 }
3372}
3373
3374MODULE = Coro::State PACKAGE = Coro::Signal
3375
3376SV *
3377new (SV *klass)
3378 CODE:
3379 RETVAL = sv_bless (
3380 coro_waitarray_new (aTHX_ 0),
3381 GvSTASH (CvGV (cv))
3382 );
3383 OUTPUT:
3384 RETVAL
3385
3386void
3387wait (...)
3388 CODE:
3389 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3390
3391void
3392broadcast (SV *self)
3393 CODE:
3394{
3395 AV *av = (AV *)SvRV (self);
3396 coro_signal_wake (aTHX_ av, AvFILLp (av));
3397}
3398
3399void
3400send (SV *self)
3401 CODE:
3402{
3403 AV *av = (AV *)SvRV (self);
3404
3405 if (AvFILLp (av))
3406 coro_signal_wake (aTHX_ av, 1);
3407 else
3408 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3409}
3410
3411IV
3412awaited (SV *self)
3413 CODE:
3414 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3415 OUTPUT:
3416 RETVAL
3417
3418
3419MODULE = Coro::State PACKAGE = Coro::AnyEvent
3420
3421BOOT:
3422 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3423
3424void
3425_schedule (...)
3426 CODE:
3427{
3428 static int incede;
3429
3430 api_cede_notself (aTHX);
3431
3432 ++incede;
3433 while (coro_nready >= incede && api_cede (aTHX))
3434 ;
3435
3436 sv_setsv (sv_activity, &PL_sv_undef);
3437 if (coro_nready >= incede)
3438 {
3439 PUSHMARK (SP);
3440 PUTBACK;
3441 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3442 }
3443
3444 --incede;
3445}
3446
3447
3448MODULE = Coro::State PACKAGE = Coro::AIO
3449
3450void
3451_register (char *target, char *proto, SV *req)
3452 CODE:
3453{
3454 CV *req_cv = coro_sv_2cv (aTHX_ req);
3455 /* newXSproto doesn't return the CV on 5.8 */
3456 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3457 sv_setpv ((SV *)slf_cv, proto);
3458 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3459}
3460

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