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Comparing Coro/Coro/State.xs (file contents):
Revision 1.189 by root, Fri Oct 5 20:38:43 2007 UTC vs.
Revision 1.329 by root, Tue Nov 25 20:48:41 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
75/* 5.8.7 */ 110/* 5.8.7 */
76#ifndef SvRV_set 111#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 113#endif
79 114
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 126#endif
92 127
93/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
94 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
95#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
96#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
97 137
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_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 */
180static SV *sv_idle; /* $Coro::idle */
136 181
137static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
138static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
139 187
140/* async_pool helper stuff */ 188/* async_pool helper stuff */
141static SV *sv_pool_rss; 189static SV *sv_pool_rss;
142static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
143static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
144 199
145static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
146static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
147 202
148enum { 203enum {
… …
153 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
154 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
155}; 210};
156 211
157/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
158typedef struct coro_cctx { 213typedef struct coro_cctx
214{
159 struct coro_cctx *next; 215 struct coro_cctx *next;
160 216
161 /* the stack */ 217 /* the stack */
162 void *sptr; 218 void *sptr;
163 size_t ssize; 219 size_t ssize;
… …
166 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
167 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
168 JMPENV *top_env; 224 JMPENV *top_env;
169 coro_context cctx; 225 coro_context cctx;
170 226
227 U32 gen;
171#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
172 int valgrind_id; 229 int valgrind_id;
173#endif 230#endif
174 unsigned char flags; 231 unsigned char flags;
175} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
176 237
177enum { 238enum {
178 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
179 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
180 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
181 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
182}; 243};
183 244
184/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
185struct coro { 246typedef struct
186 /* the c coroutine allocated to this perl coroutine, if any */ 247{
187 coro_cctx *cctx; 248 SV *defsv;
188 249 AV *defav;
189 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
190 AV *args; 251 SV *irsgv;
191 int refcnt; 252 HV *hinthv;
192 int flags; /* CF_ flags */
193
194 /* optionally saved, might be zero */
195 AV *defav; /* @_ */
196 SV *defsv; /* $_ */
197 SV *errsv; /* $@ */
198 SV *deffh; /* default filehandle */
199 SV *irssv; /* $/ */
200 SV *irssv_sv; /* real $/ cache */
201
202#define VAR(name,type) type name; 253#define VAR(name,type) type name;
203# include "state.h" 254# include "state.h"
204#undef VAR 255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
260/* this is a structure representing a perl-level coroutine */
261struct coro {
262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx;
264
265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */
269
270 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
205 276
206 /* statistics */ 277 /* statistics */
207 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
208 279
209 /* coro process data */ 280 /* coro process data */
210 int prio; 281 int prio;
211 //SV *throw; 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
212 284
213 /* async_pool */ 285 /* async_pool */
214 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
215 289
216 /* linked list */ 290 /* linked list */
217 struct coro *next, *prev; 291 struct coro *next, *prev;
218 HV *hv; /* the perl hash associated with this coro, if any */
219}; 292};
220 293
221typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
222typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
223 301
224/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
225 303
226#define PRIO_MAX 3 304#define PRIO_MAX 3
227#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
230#define PRIO_IDLE -3 308#define PRIO_IDLE -3
231#define PRIO_MIN -4 309#define PRIO_MIN -4
232 310
233/* for Coro.pm */ 311/* for Coro.pm */
234static SV *coro_current; 312static SV *coro_current;
313static SV *coro_readyhook;
235static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
236static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
237static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
238 318
239/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
240 320
321static SV *
322coro_get_sv (pTHX_ const char *name, int create)
323{
324#if PERL_VERSION_ATLEAST (5,10,0)
325 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
326 get_sv (name, create);
327#endif
328 return get_sv (name, create);
329}
330
241static AV * 331static AV *
332coro_get_av (pTHX_ const char *name, int create)
333{
334#if PERL_VERSION_ATLEAST (5,10,0)
335 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
336 get_av (name, create);
337#endif
338 return get_av (name, create);
339}
340
341static HV *
342coro_get_hv (pTHX_ const char *name, int create)
343{
344#if PERL_VERSION_ATLEAST (5,10,0)
345 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
346 get_hv (name, create);
347#endif
348 return get_hv (name, create);
349}
350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360static AV *
242coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
243{ 362{
244 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
245 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
246 365
247 newpadlist = newAV (); 366 newpadlist = newAV ();
248 AvREAL_off (newpadlist); 367 AvREAL_off (newpadlist);
249#if PERL_VERSION_ATLEAST (5,9,0) 368#if PERL_VERSION_ATLEAST (5,10,0)
250 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
251#else 370#else
252 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
253#endif 372#endif
254 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
255 --AvFILLp (padlist); 374 --AvFILLp (padlist);
256 375
257 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
258 av_store (newpadlist, 1, (SV *)newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
259 378
260 return newpadlist; 379 return newpadlist;
261} 380}
262 381
… …
292 411
293 /* casting is fun. */ 412 /* casting is fun. */
294 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
295 free_padlist (aTHX_ padlist); 414 free_padlist (aTHX_ padlist);
296 415
297 SvREFCNT_dec (av); 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
298 417
299 return 0; 418 return 0;
300} 419}
301 420
421#define CORO_MAGIC_type_cv 26
302#define PERL_MAGIC_coro PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
303 423
304static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 424static MGVTBL coro_cv_vtbl = {
425 0, 0, 0, 0,
426 coro_cv_free
427};
305 428
306#define CORO_MAGIC(cv) \ 429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
307 SvMAGIC (cv) \ 431 ? SvMAGIC (sv) \
308 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 432 : mg_find (sv, type))
309 ? SvMAGIC (cv) \ 433
310 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
311 : 0 437 : 0)
312 438
313static struct coro * 439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
441
442INLINE struct coro *
314SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
315{ 444{
316 HV *stash; 445 HV *stash;
317 MAGIC *mg; 446 MAGIC *mg;
318 447
319 if (SvROK (coro)) 448 if (SvROK (coro))
320 coro = SvRV (coro); 449 coro = SvRV (coro);
321 450
322 if (SvTYPE (coro) != SVt_PVHV) 451 if (expect_false (SvTYPE (coro) != SVt_PVHV))
323 croak ("Coro::State object required"); 452 croak ("Coro::State object required");
324 453
325 stash = SvSTASH (coro); 454 stash = SvSTASH (coro);
326 if (stash != coro_stash && stash != coro_state_stash) 455 if (expect_false (stash != coro_stash && stash != coro_state_stash))
327 { 456 {
328 /* very slow, but rare, check */ 457 /* very slow, but rare, check */
329 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
330 croak ("Coro::State object required"); 459 croak ("Coro::State object required");
331 } 460 }
332 461
333 mg = CORO_MAGIC (coro); 462 mg = CORO_MAGIC_state (coro);
334 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
335} 464}
336 465
337#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
338 467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
471
339/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
340static void 473static void
341get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
342{ 475{
343 MAGIC *mg = CORO_MAGIC (cv); 476 MAGIC *mg = CORO_MAGIC_cv (cv);
344 AV *av; 477 AV *av;
345 478
346 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
347 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
348 else 481 else
349 { 482 {
350#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
351 /* this is probably cleaner, but also slower? */ 484 /* this is probably cleaner? but also slower! */
485 /* in practise, it seems to be less stable */
352 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
353 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
354 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
355 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
356#else 490#else
357 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
358#endif 492#endif
359 } 493 }
360} 494}
361 495
362static void 496static void
363put_padlist (pTHX_ CV *cv) 497put_padlist (pTHX_ CV *cv)
364{ 498{
365 MAGIC *mg = CORO_MAGIC (cv); 499 MAGIC *mg = CORO_MAGIC_cv (cv);
366 AV *av; 500 AV *av;
367 501
368 if (!mg) 502 if (expect_false (!mg))
369 { 503 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
370 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
371 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
372 mg->mg_virtual = &vtbl_coro;
373 mg->mg_obj = (SV *)newAV ();
374 }
375 504
376 av = (AV *)mg->mg_obj; 505 av = (AV *)mg->mg_obj;
377 506
378 if (AvFILLp (av) >= AvMAX (av)) 507 if (expect_false (AvFILLp (av) >= AvMAX (av)))
379 av_extend (av, AvMAX (av) + 1); 508 av_extend (av, AvMAX (av) + 1);
380 509
381 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 510 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
382} 511}
383 512
384/** load & save, init *******************************************************/ 513/** load & save, init *******************************************************/
385 514
386static void 515static void
387load_perl (pTHX_ Coro__State c) 516load_perl (pTHX_ Coro__State c)
388{ 517{
518 perl_slots *slot = c->slot;
519 c->slot = 0;
520
521 PL_mainstack = c->mainstack;
522
523 GvSV (PL_defgv) = slot->defsv;
524 GvAV (PL_defgv) = slot->defav;
525 GvSV (PL_errgv) = slot->errsv;
526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
528
389#define VAR(name,type) PL_ ## name = c->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
390# include "state.h" 530 # include "state.h"
391#undef VAR 531 #undef VAR
392
393 GvSV (PL_defgv) = c->defsv;
394 GvAV (PL_defgv) = c->defav;
395 GvSV (PL_errgv) = c->errsv;
396 GvSV (irsgv) = c->irssv_sv;
397 532
398 { 533 {
399 dSP; 534 dSP;
535
400 CV *cv; 536 CV *cv;
401 537
402 /* now do the ugly restore mess */ 538 /* now do the ugly restore mess */
403 while ((cv = (CV *)POPs)) 539 while (expect_true (cv = (CV *)POPs))
404 { 540 {
405 put_padlist (aTHX_ cv); /* mark this padlist as available */ 541 put_padlist (aTHX_ cv); /* mark this padlist as available */
406 CvDEPTH (cv) = PTR2IV (POPs); 542 CvDEPTH (cv) = PTR2IV (POPs);
407 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
408 } 544 }
409 545
410 PUTBACK; 546 PUTBACK;
411 } 547 }
548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
412} 551}
413 552
414static void 553static void
415save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
416{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
417 { 559 {
418 dSP; 560 dSP;
419 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
420 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
421 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
427 569
428 XPUSHs (Nullsv); 570 XPUSHs (Nullsv);
429 /* this loop was inspired by pp_caller */ 571 /* this loop was inspired by pp_caller */
430 for (;;) 572 for (;;)
431 { 573 {
432 while (cxix >= 0) 574 while (expect_true (cxix >= 0))
433 { 575 {
434 PERL_CONTEXT *cx = &ccstk[cxix--]; 576 PERL_CONTEXT *cx = &ccstk[cxix--];
435 577
436 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 578 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
437 { 579 {
438 CV *cv = cx->blk_sub.cv; 580 CV *cv = cx->blk_sub.cv;
439 581
440 if (CvDEPTH (cv)) 582 if (expect_true (CvDEPTH (cv)))
441 { 583 {
442 EXTEND (SP, 3); 584 EXTEND (SP, 3);
443 PUSHs ((SV *)CvPADLIST (cv)); 585 PUSHs ((SV *)CvPADLIST (cv));
444 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 586 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
445 PUSHs ((SV *)cv); 587 PUSHs ((SV *)cv);
446 588
447 CvDEPTH (cv) = 0; 589 CvDEPTH (cv) = 0;
448 get_padlist (aTHX_ cv); 590 get_padlist (aTHX_ cv);
449 } 591 }
450 } 592 }
451 } 593 }
452 594
453 if (top_si->si_type == PERLSI_MAIN) 595 if (expect_true (top_si->si_type == PERLSI_MAIN))
454 break; 596 break;
455 597
456 top_si = top_si->si_prev; 598 top_si = top_si->si_prev;
457 ccstk = top_si->si_cxstack; 599 ccstk = top_si->si_cxstack;
458 cxix = top_si->si_cxix; 600 cxix = top_si->si_cxix;
459 } 601 }
460 602
461 PUTBACK; 603 PUTBACK;
462 } 604 }
463 605
606 /* allocate some space on the context stack for our purposes */
607 /* we manually unroll here, as usually 2 slots is enough */
608 if (SLOT_COUNT >= 1) CXINC;
609 if (SLOT_COUNT >= 2) CXINC;
610 if (SLOT_COUNT >= 3) CXINC;
611 {
612 int i;
613 for (i = 3; i < SLOT_COUNT; ++i)
614 CXINC;
615 }
616 cxstack_ix -= SLOT_COUNT; /* undo allocation */
617
618 c->mainstack = PL_mainstack;
619
620 {
621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
622
464 c->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
465 c->defsv = DEFSV; 624 slot->defsv = DEFSV;
466 c->errsv = ERRSV; 625 slot->errsv = ERRSV;
467 c->irssv_sv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
468 628
469#define VAR(name,type)c->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
470# include "state.h" 630 # include "state.h"
471#undef VAR 631 #undef VAR
632 }
472} 633}
473 634
474/* 635/*
475 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
476 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
477 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
478 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
479 */ 640 */
480#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
481# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
482#else 643#else
483static void 644static void
484coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
485{ 646{
486 PL_curstackinfo = new_stackinfo(64, 6); 647 PL_curstackinfo = new_stackinfo(32, 8);
487 PL_curstackinfo->si_type = PERLSI_MAIN; 648 PL_curstackinfo->si_type = PERLSI_MAIN;
488 PL_curstack = PL_curstackinfo->si_stack; 649 PL_curstack = PL_curstackinfo->si_stack;
489 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
490 651
491 PL_stack_base = AvARRAY(PL_curstack); 652 PL_stack_base = AvARRAY(PL_curstack);
492 PL_stack_sp = PL_stack_base; 653 PL_stack_sp = PL_stack_base;
493 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 654 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
494 655
495 New(50,PL_tmps_stack,64,SV*); 656 New(50,PL_tmps_stack,32,SV*);
496 PL_tmps_floor = -1; 657 PL_tmps_floor = -1;
497 PL_tmps_ix = -1; 658 PL_tmps_ix = -1;
498 PL_tmps_max = 64; 659 PL_tmps_max = 32;
499 660
500 New(54,PL_markstack,16,I32); 661 New(54,PL_markstack,16,I32);
501 PL_markstack_ptr = PL_markstack; 662 PL_markstack_ptr = PL_markstack;
502 PL_markstack_max = PL_markstack + 16; 663 PL_markstack_max = PL_markstack + 16;
503 664
504#ifdef SET_MARK_OFFSET 665#ifdef SET_MARK_OFFSET
505 SET_MARK_OFFSET; 666 SET_MARK_OFFSET;
506#endif 667#endif
507 668
508 New(54,PL_scopestack,16,I32); 669 New(54,PL_scopestack,8,I32);
509 PL_scopestack_ix = 0; 670 PL_scopestack_ix = 0;
510 PL_scopestack_max = 16; 671 PL_scopestack_max = 8;
511 672
512 New(54,PL_savestack,64,ANY); 673 New(54,PL_savestack,24,ANY);
513 PL_savestack_ix = 0; 674 PL_savestack_ix = 0;
514 PL_savestack_max = 64; 675 PL_savestack_max = 24;
515 676
516#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
517 New(54,PL_retstack,4,OP*); 678 New(54,PL_retstack,4,OP*);
518 PL_retstack_ix = 0; 679 PL_retstack_ix = 0;
519 PL_retstack_max = 4; 680 PL_retstack_max = 4;
520#endif 681#endif
521} 682}
… …
523 684
524/* 685/*
525 * destroy the stacks, the callchain etc... 686 * destroy the stacks, the callchain etc...
526 */ 687 */
527static void 688static void
528coro_destroy_stacks (pTHX) 689coro_destruct_stacks (pTHX)
529{ 690{
530 while (PL_curstackinfo->si_next) 691 while (PL_curstackinfo->si_next)
531 PL_curstackinfo = PL_curstackinfo->si_next; 692 PL_curstackinfo = PL_curstackinfo->si_next;
532 693
533 while (PL_curstackinfo) 694 while (PL_curstackinfo)
… …
544 705
545 Safefree (PL_tmps_stack); 706 Safefree (PL_tmps_stack);
546 Safefree (PL_markstack); 707 Safefree (PL_markstack);
547 Safefree (PL_scopestack); 708 Safefree (PL_scopestack);
548 Safefree (PL_savestack); 709 Safefree (PL_savestack);
549#if !PERL_VERSION_ATLEAST (5,9,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
550 Safefree (PL_retstack); 711 Safefree (PL_retstack);
551#endif 712#endif
552} 713}
714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
553 723
554static size_t 724static size_t
555coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
556{ 726{
557 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
558 728
559 if (coro->mainstack) 729 if (coro->mainstack)
560 { 730 {
561 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
562 { 732 {
563 #define VAR(name,type)coro->name = PL_ ## name; 733 #define SYM(sym) PL_ ## sym
564 # include "state.h" 734 CORO_RSS;
565 #undef VAR 735 #undef SYM
566 } 736 }
567 737 else
568 rss += sizeof (coro->curstackinfo); 738 {
569 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 739 #define SYM(sym) coro->slot->sym
570 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
571 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 741 #undef SYM
572 rss += coro->tmps_max * sizeof (SV *); 742 }
573 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
574 rss += coro->scopestack_max * sizeof (I32);
575 rss += coro->savestack_max * sizeof (ANY);
576
577#if !PERL_VERSION_ATLEAST (5,9,0)
578 rss += coro->retstack_max * sizeof (OP *);
579#endif
580 } 743 }
581 744
582 return rss; 745 return rss;
583} 746}
584 747
585/** coroutine stack handling ************************************************/ 748/** coroutine stack handling ************************************************/
586 749
750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
751static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
752static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
753
754/* apparently < 5.8.8 */
755#ifndef MgPV_nolen_const
756#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
757 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
758 (const char*)(mg)->mg_ptr)
759#endif
760
761/*
762 * This overrides the default magic get method of %SIG elements.
763 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
764 * and instead of tryign to save and restore the hash elements, we just provide
765 * readback here.
766 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
767 * not expecting this to actually change the hook. This is a potential problem
768 * when a schedule happens then, but we ignore this.
769 */
587static void 770static int
771coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
772{
773 const char *s = MgPV_nolen_const (mg);
774
775 if (*s == '_')
776 {
777 SV **svp = 0;
778
779 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
780 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
781
782 if (svp)
783 {
784 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
785 return 0;
786 }
787 }
788
789 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
790}
791
792static int
793coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
794{
795 const char *s = MgPV_nolen_const (mg);
796
797 if (*s == '_')
798 {
799 SV **svp = 0;
800
801 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
802 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
803
804 if (svp)
805 {
806 SV *old = *svp;
807 *svp = 0;
808 SvREFCNT_dec (old);
809 return 0;
810 }
811 }
812
813 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
814}
815
816static int
817coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
818{
819 const char *s = MgPV_nolen_const (mg);
820
821 if (*s == '_')
822 {
823 SV **svp = 0;
824
825 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
826 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
827
828 if (svp)
829 {
830 SV *old = *svp;
831 *svp = newSVsv (sv);
832 SvREFCNT_dec (old);
833 return 0;
834 }
835 }
836
837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
838}
839
840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
588coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
589{ 863{
590 /* 864 /*
591 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
592 */ 866 */
… …
594 868
595 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
596 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
597 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
598 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
599 PL_curpm = 0; 876 PL_curpm = 0;
877 PL_curpad = 0;
600 PL_localizing = 0; 878 PL_localizing = 0;
601 PL_dirty = 0; 879 PL_dirty = 0;
602 PL_restartop = 0; 880 PL_restartop = 0;
881#if PERL_VERSION_ATLEAST (5,10,0)
882 PL_parser = 0;
883#endif
884 PL_hints = 0;
885
886 /* recreate the die/warn hooks */
887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
603 889
604 GvSV (PL_defgv) = NEWSV (0, 0); 890 GvSV (PL_defgv) = newSV (0);
605 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
606 GvSV (PL_errgv) = NEWSV (0, 0); 892 GvSV (PL_errgv) = newSV (0);
607 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
608 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
609 PL_defoutgv = SvREFCNT_inc (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
610 897
611 { 898 {
612 dSP; 899 dSP;
613 LOGOP myop; 900 UNOP myop;
614 901
615 Zero (&myop, 1, LOGOP); 902 Zero (&myop, 1, UNOP);
616 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
617 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
618 906
619 PUSHMARK (SP); 907 PUSHMARK (SP);
620 XPUSHs (av_shift (GvAV (PL_defgv))); 908 PUSHs ((SV *)coro->startcv);
621 PUTBACK; 909 PUTBACK;
622 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
623 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
624 SPAGAIN;
625 } 912 }
626 913
627 ENTER; /* necessary e.g. for dounwind */ 914 /* this newly created coroutine might be run on an existing cctx which most
628} 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
916 */
917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
629 919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
930}
931
630static void 932static void
631coro_destroy (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
632{ 934{
633 if (!IN_DESTRUCT) 935 if (!IN_DESTRUCT)
634 { 936 {
635 /* restore all saved variables and stuff */ 937 /* restore all saved variables and stuff */
636 LEAVE_SCOPE (0); 938 LEAVE_SCOPE (0);
… …
651 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
652 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
653 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
654 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
655 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
656 959
960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962
657 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
658 //SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
659 967
660 coro_destroy_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
661} 969}
662 970
663static void 971INLINE void
664free_coro_mortal (pTHX) 972free_coro_mortal (pTHX)
665{ 973{
666 if (coro_mortal) 974 if (expect_true (coro_mortal))
667 { 975 {
668 SvREFCNT_dec (coro_mortal); 976 SvREFCNT_dec (coro_mortal);
669 coro_mortal = 0; 977 coro_mortal = 0;
670 } 978 }
671} 979}
… …
673static int 981static int
674runops_trace (pTHX) 982runops_trace (pTHX)
675{ 983{
676 COP *oldcop = 0; 984 COP *oldcop = 0;
677 int oldcxix = -2; 985 int oldcxix = -2;
678 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
679 coro_cctx *cctx = coro->cctx;
680 986
681 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
682 { 988 {
683 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
684 990
685 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
686 { 992 {
687 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
688 { 994 {
689 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
690 SV **bot, **top; 996 SV **bot, **top;
691 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
692 SV **cb; 998 SV **cb;
… …
700 bot = PL_stack_base + cx->blk_oldsp + 1; 1006 bot = PL_stack_base + cx->blk_oldsp + 1;
701 top = cx->blk_gimme == G_ARRAY ? SP + 1 1007 top = cx->blk_gimme == G_ARRAY ? SP + 1
702 : cx->blk_gimme == G_SCALAR ? bot + 1 1008 : cx->blk_gimme == G_SCALAR ? bot + 1
703 : bot; 1009 : bot;
704 1010
1011 av_extend (av, top - bot);
705 while (bot < top) 1012 while (bot < top)
706 av_push (av, SvREFCNT_inc (*bot++)); 1013 av_push (av, SvREFCNT_inc_NN (*bot++));
707 1014
708 PL_runops = RUNOPS_DEFAULT; 1015 PL_runops = RUNOPS_DEFAULT;
709 ENTER; 1016 ENTER;
710 SAVETMPS; 1017 SAVETMPS;
711 EXTEND (SP, 3); 1018 EXTEND (SP, 3);
… …
728 1035
729 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
730 { 1037 {
731 SV **cb; 1038 SV **cb;
732 1039
733 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
734 { 1041 {
735 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
736 1043
737 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
738 { 1045 {
739 runops_proc_t old_runops = PL_runops;
740 dSP; 1046 dSP;
741 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
742 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
743 1049
744 if (isGV (gv)) 1050 if (isGV (gv))
… …
749 SAVETMPS; 1055 SAVETMPS;
750 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
751 PUSHMARK (SP); 1057 PUSHMARK (SP);
752 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
753 PUSHs (fullname); 1059 PUSHs (fullname);
754 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
755 PUTBACK; 1061 PUTBACK;
756 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
757 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
758 SPAGAIN; 1064 SPAGAIN;
759 FREETMPS; 1065 FREETMPS;
… …
762 } 1068 }
763 1069
764 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
765 } 1071 }
766 1072
767 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
768 { 1074 {
769 dSP; 1075 dSP;
770 1076
771 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
772 ENTER; 1078 ENTER;
… …
791 1097
792 TAINT_NOT; 1098 TAINT_NOT;
793 return 0; 1099 return 0;
794} 1100}
795 1101
796/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static struct CoroSLF cctx_ssl_frame;
797/* _cctx_init should be careful, as it could be called at almost any time */ 1103
798/* during execution of a perl program */ 1104static void
1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1106{
1107 ta->prev = 0;
1108}
1109
1110static int
1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1112{
1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
799static void NOINLINE 1119static void NOINLINE
800prepare_cctx (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
801{ 1121{
802 dSP;
803 LOGOP myop;
804
805 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
806 1123
807 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
808 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
809 1126
810 Zero (&myop, 1, LOGOP); 1127 /* we already must be executing an SLF op, there is no other valid way
811 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
812 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
813 1131
814 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
815 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
816 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1134
817 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
818 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
819 PL_op = (OP *)&myop; 1137}
820 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1138
821 SPAGAIN; 1139/* the tail of transfer: execute stuff we can only do after a transfer */
1140INLINE void
1141transfer_tail (pTHX)
1142{
1143 free_coro_mortal (aTHX);
822} 1144}
823 1145
824/* 1146/*
825 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
826 */ 1148 */
827static void 1149static void
828coro_run (void *arg) 1150cctx_run (void *arg)
829{ 1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
830 dTHX; 1158 dTHX;
831 1159
832 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1160 /* normally we would need to skip the entersub here */
833 UNLOCK; 1161 /* not doing so will re-execute it, which is exactly what we want */
834
835 /* we now skip the entersub that lead to transfer() */
836 PL_op = PL_op->op_next; 1162 /* PL_nop = PL_nop->op_next */
837 1163
838 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
839 prepare_cctx (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
840 1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
841 /* somebody or something will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
842 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
843 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
844
845 /* 1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
1177
1178 /*
846 * If perl-run returns we assume exit() was being called or the coro 1179 * If perl-run returns we assume exit() was being called or the coro
847 * fell off the end, which seems to be the only valid (non-bug) 1180 * fell off the end, which seems to be the only valid (non-bug)
848 * reason for perl_run to return. We try to exit by jumping to the 1181 * reason for perl_run to return. We try to exit by jumping to the
849 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
850 * coroutine as Coro has no such concept 1183 * coroutine as Coro has no such concept.
1184 * This actually isn't valid with the pthread backend, but OSes requiring
1185 * that backend are too broken to do it in a standards-compliant way.
851 */ 1186 */
852 PL_top_env = main_top_env; 1187 PL_top_env = main_top_env;
853 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1188 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1189 }
854} 1190}
855 1191
856static coro_cctx * 1192static coro_cctx *
857cctx_new () 1193cctx_new ()
858{ 1194{
859 coro_cctx *cctx; 1195 coro_cctx *cctx;
1196
1197 ++cctx_count;
1198 New (0, cctx, 1, coro_cctx);
1199
1200 cctx->gen = cctx_gen;
1201 cctx->flags = 0;
1202 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx only suitable as source */
1208static coro_cctx *
1209cctx_new_empty ()
1210{
1211 coro_cctx *cctx = cctx_new ();
1212
1213 cctx->sptr = 0;
1214 coro_create (&cctx->cctx, 0, 0, 0, 0);
1215
1216 return cctx;
1217}
1218
1219/* create a new cctx suitable as destination/running a perl interpreter */
1220static coro_cctx *
1221cctx_new_run ()
1222{
1223 coro_cctx *cctx = cctx_new ();
860 void *stack_start; 1224 void *stack_start;
861 size_t stack_size; 1225 size_t stack_size;
862 1226
863 ++cctx_count;
864
865 Newz (0, cctx, 1, coro_cctx);
866
867#if HAVE_MMAP 1227#if HAVE_MMAP
868
869 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1228 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
870 /* mmap supposedly does allocate-on-write for us */ 1229 /* mmap supposedly does allocate-on-write for us */
871 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1230 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
872 1231
873 if (cctx->sptr != (void *)-1) 1232 if (cctx->sptr != (void *)-1)
874 { 1233 {
875# if CORO_STACKGUARD 1234 #if CORO_STACKGUARD
876 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1235 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
877# endif 1236 #endif
878 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1237 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
879 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1238 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
880 cctx->flags |= CC_MAPPED; 1239 cctx->flags |= CC_MAPPED;
881 } 1240 }
882 else 1241 else
883#endif 1242#endif
884 { 1243 {
885 cctx->ssize = coro_stacksize * (long)sizeof (long); 1244 cctx->ssize = cctx_stacksize * (long)sizeof (long);
886 New (0, cctx->sptr, coro_stacksize, long); 1245 New (0, cctx->sptr, cctx_stacksize, long);
887 1246
888 if (!cctx->sptr) 1247 if (!cctx->sptr)
889 { 1248 {
890 perror ("FATAL: unable to allocate stack for coroutine"); 1249 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
891 _exit (EXIT_FAILURE); 1250 _exit (EXIT_FAILURE);
892 } 1251 }
893 1252
894 stack_start = cctx->sptr; 1253 stack_start = cctx->sptr;
895 stack_size = cctx->ssize; 1254 stack_size = cctx->ssize;
896 } 1255 }
897 1256
898 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1257 #if CORO_USE_VALGRIND
1258 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1259 #endif
1260
899 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1261 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
900 1262
901 return cctx; 1263 return cctx;
902} 1264}
903 1265
904static void 1266static void
905cctx_destroy (coro_cctx *cctx) 1267cctx_destroy (coro_cctx *cctx)
906{ 1268{
907 if (!cctx) 1269 if (!cctx)
908 return; 1270 return;
909 1271
1272 assert (cctx != cctx_current);//D temporary
1273
910 --cctx_count; 1274 --cctx_count;
1275 coro_destroy (&cctx->cctx);
911 1276
1277 /* coro_transfer creates new, empty cctx's */
1278 if (cctx->sptr)
1279 {
912#if CORO_USE_VALGRIND 1280 #if CORO_USE_VALGRIND
913 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1281 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
914#endif 1282 #endif
915 1283
916#if HAVE_MMAP 1284#if HAVE_MMAP
917 if (cctx->flags & CC_MAPPED) 1285 if (cctx->flags & CC_MAPPED)
918 munmap (cctx->sptr, cctx->ssize); 1286 munmap (cctx->sptr, cctx->ssize);
919 else 1287 else
920#endif 1288#endif
921 Safefree (cctx->sptr); 1289 Safefree (cctx->sptr);
1290 }
922 1291
923 Safefree (cctx); 1292 Safefree (cctx);
924} 1293}
1294
1295/* wether this cctx should be destructed */
1296#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
925 1297
926static coro_cctx * 1298static coro_cctx *
927cctx_get (pTHX) 1299cctx_get (pTHX)
928{ 1300{
929 while (cctx_first) 1301 while (expect_true (cctx_first))
930 { 1302 {
931 coro_cctx *cctx = cctx_first; 1303 coro_cctx *cctx = cctx_first;
932 cctx_first = cctx->next; 1304 cctx_first = cctx->next;
933 --cctx_idle; 1305 --cctx_idle;
934 1306
935 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1307 if (expect_true (!CCTX_EXPIRED (cctx)))
936 return cctx; 1308 return cctx;
937 1309
938 cctx_destroy (cctx); 1310 cctx_destroy (cctx);
939 } 1311 }
940 1312
941 return cctx_new (); 1313 return cctx_new_run ();
942} 1314}
943 1315
944static void 1316static void
945cctx_put (coro_cctx *cctx) 1317cctx_put (coro_cctx *cctx)
946{ 1318{
1319 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1320
947 /* free another cctx if overlimit */ 1321 /* free another cctx if overlimit */
948 if (cctx_idle >= MAX_IDLE_CCTX) 1322 if (expect_false (cctx_idle >= cctx_max_idle))
949 { 1323 {
950 coro_cctx *first = cctx_first; 1324 coro_cctx *first = cctx_first;
951 cctx_first = first->next; 1325 cctx_first = first->next;
952 --cctx_idle; 1326 --cctx_idle;
953 1327
… …
959 cctx_first = cctx; 1333 cctx_first = cctx;
960} 1334}
961 1335
962/** coroutine switching *****************************************************/ 1336/** coroutine switching *****************************************************/
963 1337
964static void NOINLINE 1338static void
965transfer_check (pTHX_ struct coro *prev, struct coro *next) 1339transfer_check (pTHX_ struct coro *prev, struct coro *next)
966{ 1340{
967 if (prev != next) 1341 /* TODO: throwing up here is considered harmful */
1342
1343 if (expect_true (prev != next))
968 { 1344 {
969 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1345 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
970 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
971 1347
972 if (next->flags & CF_RUNNING) 1348 if (expect_false (next->flags & CF_RUNNING))
973 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
974 1350
975 if (next->flags & CF_DESTROYED) 1351 if (expect_false (next->flags & CF_DESTROYED))
976 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1352 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
977 1353
1354#if !PERL_VERSION_ATLEAST (5,10,0)
978 if (PL_lex_state != LEX_NOTPARSING) 1355 if (expect_false (PL_lex_state != LEX_NOTPARSING))
979 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1356 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1357#endif
980 } 1358 }
981} 1359}
982 1360
983/* always use the TRANSFER macro */ 1361/* always use the TRANSFER macro */
984static void NOINLINE 1362static void NOINLINE /* noinline so we have a fixed stackframe */
985transfer (pTHX_ struct coro *prev, struct coro *next) 1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
986{ 1364{
987 dSTACKLEVEL; 1365 dSTACKLEVEL;
988 1366
989 /* sometimes transfer is only called to set idle_sp */ 1367 /* sometimes transfer is only called to set idle_sp */
990 if (!next) 1368 if (expect_false (!prev))
991 { 1369 {
992 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1370 cctx_current->idle_sp = STACKLEVEL;
993 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1371 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
994 }
995 else if (prev != next)
996 { 1372 }
1373 else if (expect_true (prev != next))
1374 {
997 coro_cctx *prev__cctx; 1375 coro_cctx *cctx_prev;
998 1376
999 if (prev->flags & CF_NEW) 1377 if (expect_false (prev->flags & CF_NEW))
1000 { 1378 {
1001 /* create a new empty context */ 1379 /* create a new empty/source context */
1002 Newz (0, prev->cctx, 1, coro_cctx);
1003 prev->flags &= ~CF_NEW; 1380 prev->flags &= ~CF_NEW;
1004 prev->flags |= CF_RUNNING; 1381 prev->flags |= CF_RUNNING;
1005 } 1382 }
1006 1383
1007 prev->flags &= ~CF_RUNNING; 1384 prev->flags &= ~CF_RUNNING;
1008 next->flags |= CF_RUNNING; 1385 next->flags |= CF_RUNNING;
1009 1386
1010 LOCK; 1387 /* first get rid of the old state */
1388 save_perl (aTHX_ prev);
1011 1389
1012 if (next->flags & CF_NEW) 1390 if (expect_false (next->flags & CF_NEW))
1013 { 1391 {
1014 /* need to start coroutine */ 1392 /* need to start coroutine */
1015 next->flags &= ~CF_NEW; 1393 next->flags &= ~CF_NEW;
1016 /* first get rid of the old state */
1017 save_perl (aTHX_ prev);
1018 /* setup coroutine call */ 1394 /* setup coroutine call */
1019 coro_setup (aTHX_ next); 1395 coro_setup (aTHX_ next);
1020 } 1396 }
1021 else 1397 else
1398 load_perl (aTHX_ next);
1399
1400 assert (!prev->cctx);//D temporary
1401
1402 /* possibly untie and reuse the cctx */
1403 if (expect_true (
1404 cctx_current->idle_sp == STACKLEVEL
1405 && !(cctx_current->flags & CC_TRACE)
1406 && !force_cctx
1407 ))
1022 { 1408 {
1023 /* coroutine already started */ 1409 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1024 save_perl (aTHX_ prev); 1410 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1025 load_perl (aTHX_ next); 1411
1412 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1413 /* without this the next cctx_get might destroy the running cctx while still in use */
1414 if (expect_false (CCTX_EXPIRED (cctx_current)))
1415 if (expect_true (!next->cctx))
1416 next->cctx = cctx_get (aTHX);
1417
1418 cctx_put (cctx_current);
1026 } 1419 }
1420 else
1421 prev->cctx = cctx_current;
1027 1422
1028 prev__cctx = prev->cctx; 1423 ++next->usecount;
1029 1424
1030 /* possibly "free" the cctx */ 1425 cctx_prev = cctx_current;
1031 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)) 1426 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1427
1428 next->cctx = 0;
1429
1430 if (expect_false (cctx_prev != cctx_current))
1032 { 1431 {
1033 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1432 cctx_prev->top_env = PL_top_env;
1034 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1433 PL_top_env = cctx_current->top_env;
1035 1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1036 prev->cctx = 0;
1037
1038 cctx_put (prev__cctx);
1039 } 1435 }
1040 1436
1041 ++next->usecount; 1437 transfer_tail (aTHX);
1042
1043 if (!next->cctx)
1044 next->cctx = cctx_get (aTHX);
1045
1046 if (prev__cctx != next->cctx)
1047 {
1048 prev__cctx->top_env = PL_top_env;
1049 PL_top_env = next->cctx->top_env;
1050 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1051 }
1052
1053 free_coro_mortal (aTHX);
1054 UNLOCK;
1055 } 1438 }
1056} 1439}
1057 1440
1058struct transfer_args
1059{
1060 struct coro *prev, *next;
1061};
1062
1063#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1441#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1064#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1442#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1065 1443
1066/** high level stuff ********************************************************/ 1444/** high level stuff ********************************************************/
1067 1445
1068static int 1446static int
1069coro_state_destroy (pTHX_ struct coro *coro) 1447coro_state_destroy (pTHX_ struct coro *coro)
1070{ 1448{
1071 if (coro->flags & CF_DESTROYED) 1449 if (coro->flags & CF_DESTROYED)
1072 return 0; 1450 return 0;
1451
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro);
1073 1454
1074 coro->flags |= CF_DESTROYED; 1455 coro->flags |= CF_DESTROYED;
1075 1456
1076 if (coro->flags & CF_READY) 1457 if (coro->flags & CF_READY)
1077 { 1458 {
1078 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1459 /* reduce nready, as destroying a ready coro effectively unreadies it */
1079 /* alternative: look through all ready queues and remove the coro */ 1460 /* alternative: look through all ready queues and remove the coro */
1080 LOCK;
1081 --coro_nready; 1461 --coro_nready;
1082 UNLOCK;
1083 } 1462 }
1084 else 1463 else
1085 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1464 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1086 1465
1087 if (coro->mainstack && coro->mainstack != main_mainstack) 1466 if (coro->mainstack && coro->mainstack != main_mainstack)
1088 { 1467 {
1089 struct coro temp; 1468 struct coro temp;
1090 1469
1091 if (coro->flags & CF_RUNNING) 1470 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1092 croak ("FATAL: tried to destroy currently running coroutine");
1093 1471
1094 save_perl (aTHX_ &temp); 1472 save_perl (aTHX_ &temp);
1095 load_perl (aTHX_ coro); 1473 load_perl (aTHX_ coro);
1096 1474
1097 coro_destroy (aTHX_ coro); 1475 coro_destruct (aTHX_ coro);
1098 1476
1099 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1477 load_perl (aTHX_ &temp);
1100 1478
1101 coro->mainstack = 0; 1479 coro->slot = 0;
1102 } 1480 }
1103 1481
1104 cctx_destroy (coro->cctx); 1482 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv);
1105 SvREFCNT_dec (coro->args); 1484 SvREFCNT_dec (coro->args);
1485 SvREFCNT_dec (CORO_THROW);
1106 1486
1107 if (coro->next) coro->next->prev = coro->prev; 1487 if (coro->next) coro->next->prev = coro->prev;
1108 if (coro->prev) coro->prev->next = coro->next; 1488 if (coro->prev) coro->prev->next = coro->next;
1109 if (coro == coro_first) coro_first = coro->next; 1489 if (coro == coro_first) coro_first = coro->next;
1110 1490
… …
1148# define MGf_DUP 0 1528# define MGf_DUP 0
1149#endif 1529#endif
1150}; 1530};
1151 1531
1152static void 1532static void
1153prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1533prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1154{ 1534{
1155 ta->prev = SvSTATE (prev_sv); 1535 ta->prev = SvSTATE (prev_sv);
1156 ta->next = SvSTATE (next_sv); 1536 ta->next = SvSTATE (next_sv);
1157 TRANSFER_CHECK (*ta); 1537 TRANSFER_CHECK (*ta);
1158} 1538}
1159 1539
1160static void 1540static void
1161api_transfer (SV *prev_sv, SV *next_sv) 1541api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1162{ 1542{
1163 dTHX;
1164 struct transfer_args ta; 1543 struct coro_transfer_args ta;
1165 1544
1166 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167 TRANSFER (ta); 1546 TRANSFER (ta, 1);
1547}
1548
1549/*****************************************************************************/
1550/* gensub: simple closure generation utility */
1551
1552#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1553
1554/* create a closure from XS, returns a code reference */
1555/* the arg can be accessed via GENSUB_ARG from the callback */
1556/* the callback must use dXSARGS/XSRETURN */
1557static SV *
1558gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1559{
1560 CV *cv = (CV *)newSV (0);
1561
1562 sv_upgrade ((SV *)cv, SVt_PVCV);
1563
1564 CvANON_on (cv);
1565 CvISXSUB_on (cv);
1566 CvXSUB (cv) = xsub;
1567 GENSUB_ARG = arg;
1568
1569 return newRV_noinc ((SV *)cv);
1168} 1570}
1169 1571
1170/** Coro ********************************************************************/ 1572/** Coro ********************************************************************/
1171 1573
1172static void 1574INLINE void
1173coro_enq (pTHX_ SV *coro_sv) 1575coro_enq (pTHX_ struct coro *coro)
1174{ 1576{
1175 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1577 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1176} 1578}
1177 1579
1178static SV * 1580INLINE SV *
1179coro_deq (pTHX_ int min_prio) 1581coro_deq (pTHX)
1180{ 1582{
1181 int prio = PRIO_MAX - PRIO_MIN; 1583 int prio;
1182 1584
1183 min_prio -= PRIO_MIN;
1184 if (min_prio < 0)
1185 min_prio = 0;
1186
1187 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1188 if (AvFILLp (coro_ready [prio]) >= 0) 1586 if (AvFILLp (coro_ready [prio]) >= 0)
1189 return av_shift (coro_ready [prio]); 1587 return av_shift (coro_ready [prio]);
1190 1588
1191 return 0; 1589 return 0;
1192} 1590}
1193 1591
1194static int 1592static int
1195api_ready (SV *coro_sv) 1593api_ready (pTHX_ SV *coro_sv)
1196{ 1594{
1197 dTHX;
1198 struct coro *coro; 1595 struct coro *coro;
1199 1596 SV *sv_hook;
1200 if (SvROK (coro_sv)) 1597 void (*xs_hook)(void);
1201 coro_sv = SvRV (coro_sv);
1202 1598
1203 coro = SvSTATE (coro_sv); 1599 coro = SvSTATE (coro_sv);
1204 1600
1205 if (coro->flags & CF_READY) 1601 if (coro->flags & CF_READY)
1206 return 0; 1602 return 0;
1207 1603
1208 coro->flags |= CF_READY; 1604 coro->flags |= CF_READY;
1209 1605
1210 LOCK; 1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1211 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1608
1609 coro_enq (aTHX_ coro);
1212 ++coro_nready; 1610 ++coro_nready;
1213 UNLOCK; 1611
1612 if (sv_hook)
1613 {
1614 dSP;
1615
1616 ENTER;
1617 SAVETMPS;
1618
1619 PUSHMARK (SP);
1620 PUTBACK;
1621 call_sv (sv_hook, G_VOID | G_DISCARD);
1622
1623 FREETMPS;
1624 LEAVE;
1625 }
1626
1627 if (xs_hook)
1628 xs_hook ();
1214 1629
1215 return 1; 1630 return 1;
1216} 1631}
1217 1632
1218static int 1633static int
1219api_is_ready (SV *coro_sv) 1634api_is_ready (pTHX_ SV *coro_sv)
1220{ 1635{
1221 dTHX;
1222 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1636 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1223} 1637}
1224 1638
1225static void 1639/* expects to own a reference to next->hv */
1640INLINE void
1226prepare_schedule (pTHX_ struct transfer_args *ta) 1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1227{ 1642{
1228 SV *prev_sv, *next_sv;
1229
1230 for (;;)
1231 {
1232 LOCK;
1233 next_sv = coro_deq (aTHX_ PRIO_MIN);
1234
1235 /* nothing to schedule: call the idle handler */
1236 if (!next_sv)
1237 {
1238 dSP;
1239 UNLOCK;
1240
1241 ENTER;
1242 SAVETMPS;
1243
1244 PUSHMARK (SP);
1245 PUTBACK;
1246 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1247
1248 FREETMPS;
1249 LEAVE;
1250 continue;
1251 }
1252
1253 ta->next = SvSTATE (next_sv);
1254
1255 /* cannot transfer to destroyed coros, skip and look for next */
1256 if (ta->next->flags & CF_DESTROYED)
1257 {
1258 UNLOCK;
1259 SvREFCNT_dec (next_sv);
1260 /* coro_nready is already taken care of by destroy */
1261 continue;
1262 }
1263
1264 --coro_nready;
1265 UNLOCK;
1266 break;
1267 }
1268
1269 /* free this only after the transfer */
1270 prev_sv = SvRV (coro_current); 1643 SV *prev_sv = SvRV (coro_current);
1644
1271 ta->prev = SvSTATE (prev_sv); 1645 ta->prev = SvSTATE_hv (prev_sv);
1646 ta->next = next;
1647
1272 TRANSFER_CHECK (*ta); 1648 TRANSFER_CHECK (*ta);
1273 assert (ta->next->flags & CF_READY); 1649
1274 ta->next->flags &= ~CF_READY;
1275 SvRV_set (coro_current, next_sv); 1650 SvRV_set (coro_current, (SV *)next->hv);
1276 1651
1277 LOCK;
1278 free_coro_mortal (aTHX); 1652 free_coro_mortal (aTHX);
1279 coro_mortal = prev_sv; 1653 coro_mortal = prev_sv;
1280 UNLOCK;
1281} 1654}
1282 1655
1283static void 1656static void
1657prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1658{
1659 for (;;)
1660 {
1661 SV *next_sv = coro_deq (aTHX);
1662
1663 if (expect_true (next_sv))
1664 {
1665 struct coro *next = SvSTATE_hv (next_sv);
1666
1667 /* cannot transfer to destroyed coros, skip and look for next */
1668 if (expect_false (next->flags & CF_DESTROYED))
1669 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1670 else
1671 {
1672 next->flags &= ~CF_READY;
1673 --coro_nready;
1674
1675 prepare_schedule_to (aTHX_ ta, next);
1676 break;
1677 }
1678 }
1679 else
1680 {
1681 /* nothing to schedule: call the idle handler */
1682 if (SvROK (sv_idle)
1683 && SvOBJECT (SvRV (sv_idle)))
1684 {
1685 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1686 api_ready (aTHX_ SvRV (sv_idle));
1687 --coro_nready;
1688 }
1689 else
1690 {
1691 dSP;
1692
1693 ENTER;
1694 SAVETMPS;
1695
1696 PUSHMARK (SP);
1697 PUTBACK;
1698 call_sv (sv_idle, G_VOID | G_DISCARD);
1699
1700 FREETMPS;
1701 LEAVE;
1702 }
1703 }
1704 }
1705}
1706
1707INLINE void
1284prepare_cede (pTHX_ struct transfer_args *ta) 1708prepare_cede (pTHX_ struct coro_transfer_args *ta)
1285{ 1709{
1286 api_ready (coro_current); 1710 api_ready (aTHX_ coro_current);
1287 prepare_schedule (aTHX_ ta); 1711 prepare_schedule (aTHX_ ta);
1288} 1712}
1289 1713
1714INLINE void
1715prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1716{
1717 SV *prev = SvRV (coro_current);
1718
1719 if (coro_nready)
1720 {
1721 prepare_schedule (aTHX_ ta);
1722 api_ready (aTHX_ prev);
1723 }
1724 else
1725 prepare_nop (aTHX_ ta);
1726}
1727
1728static void
1729api_schedule (pTHX)
1730{
1731 struct coro_transfer_args ta;
1732
1733 prepare_schedule (aTHX_ &ta);
1734 TRANSFER (ta, 1);
1735}
1736
1737static void
1738api_schedule_to (pTHX_ SV *coro_sv)
1739{
1740 struct coro_transfer_args ta;
1741 struct coro *next = SvSTATE (coro_sv);
1742
1743 SvREFCNT_inc_NN (coro_sv);
1744 prepare_schedule_to (aTHX_ &ta, next);
1745}
1746
1290static int 1747static int
1291prepare_cede_notself (pTHX_ struct transfer_args *ta) 1748api_cede (pTHX)
1292{ 1749{
1293 if (coro_nready) 1750 struct coro_transfer_args ta;
1294 { 1751
1295 SV *prev = SvRV (coro_current);
1296 prepare_schedule (aTHX_ ta); 1752 prepare_cede (aTHX_ &ta);
1297 api_ready (prev); 1753
1754 if (expect_true (ta.prev != ta.next))
1755 {
1756 TRANSFER (ta, 1);
1298 return 1; 1757 return 1;
1299 } 1758 }
1300 else 1759 else
1301 return 0; 1760 return 0;
1302} 1761}
1303 1762
1304static void
1305api_schedule (void)
1306{
1307 dTHX;
1308 struct transfer_args ta;
1309
1310 prepare_schedule (aTHX_ &ta);
1311 TRANSFER (ta);
1312}
1313
1314static int 1763static int
1315api_cede (void) 1764api_cede_notself (pTHX)
1316{ 1765{
1317 dTHX; 1766 if (coro_nready)
1767 {
1318 struct transfer_args ta; 1768 struct coro_transfer_args ta;
1319 1769
1320 prepare_cede (aTHX_ &ta); 1770 prepare_cede_notself (aTHX_ &ta);
1321
1322 if (ta.prev != ta.next)
1323 {
1324 TRANSFER (ta); 1771 TRANSFER (ta, 1);
1325 return 1; 1772 return 1;
1326 } 1773 }
1327 else 1774 else
1328 return 0; 1775 return 0;
1329} 1776}
1330 1777
1331static int 1778static void
1332api_cede_notself (void)
1333{
1334 dTHX;
1335 struct transfer_args ta;
1336
1337 if (prepare_cede_notself (aTHX_ &ta))
1338 {
1339 TRANSFER (ta);
1340 return 1;
1341 }
1342 else
1343 return 0;
1344}
1345
1346static void
1347api_trace (SV *coro_sv, int flags) 1779api_trace (pTHX_ SV *coro_sv, int flags)
1348{ 1780{
1349 dTHX;
1350 struct coro *coro = SvSTATE (coro_sv); 1781 struct coro *coro = SvSTATE (coro_sv);
1351 1782
1783 if (coro->flags & CF_RUNNING)
1784 croak ("cannot enable tracing on a running coroutine, caught");
1785
1352 if (flags & CC_TRACE) 1786 if (flags & CC_TRACE)
1353 { 1787 {
1354 if (!coro->cctx) 1788 if (!coro->cctx)
1355 coro->cctx = cctx_new (); 1789 coro->cctx = cctx_new_run ();
1356 else if (!(coro->cctx->flags & CC_TRACE)) 1790 else if (!(coro->cctx->flags & CC_TRACE))
1357 croak ("cannot enable tracing on coroutine with custom stack"); 1791 croak ("cannot enable tracing on coroutine with custom stack, caught");
1358 1792
1359 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1793 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1360 } 1794 }
1361 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1795 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1362 { 1796 {
1363 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1797 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1364 1798
1365 if (coro->flags & CF_RUNNING) 1799 if (coro->flags & CF_RUNNING)
1366 PL_runops = RUNOPS_DEFAULT; 1800 PL_runops = RUNOPS_DEFAULT;
1367 else 1801 else
1368 coro->runops = RUNOPS_DEFAULT; 1802 coro->slot->runops = RUNOPS_DEFAULT;
1803 }
1804}
1805
1806static void
1807coro_call_on_destroy (pTHX_ struct coro *coro)
1808{
1809 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1810 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1811
1812 if (on_destroyp)
1813 {
1814 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1815
1816 while (AvFILLp (on_destroy) >= 0)
1817 {
1818 dSP; /* don't disturb outer sp */
1819 SV *cb = av_pop (on_destroy);
1820
1821 PUSHMARK (SP);
1822
1823 if (statusp)
1824 {
1825 int i;
1826 AV *status = (AV *)SvRV (*statusp);
1827 EXTEND (SP, AvFILLp (status) + 1);
1828
1829 for (i = 0; i <= AvFILLp (status); ++i)
1830 PUSHs (AvARRAY (status)[i]);
1831 }
1832
1833 PUTBACK;
1834 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1835 }
1836 }
1837}
1838
1839static void
1840slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 int i;
1843 HV *hv = (HV *)SvRV (coro_current);
1844 AV *av = newAV ();
1845
1846 av_extend (av, items - 1);
1847 for (i = 0; i < items; ++i)
1848 av_push (av, SvREFCNT_inc_NN (arg [i]));
1849
1850 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1851
1852 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1853 api_ready (aTHX_ sv_manager);
1854
1855 frame->prepare = prepare_schedule;
1856 frame->check = slf_check_repeat;
1857}
1858
1859/*****************************************************************************/
1860/* async pool handler */
1861
1862static int
1863slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1864{
1865 HV *hv = (HV *)SvRV (coro_current);
1866 struct coro *coro = (struct coro *)frame->data;
1867
1868 if (!coro->invoke_cb)
1869 return 1; /* loop till we have invoke */
1870 else
1871 {
1872 hv_store (hv, "desc", sizeof ("desc") - 1,
1873 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1874
1875 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1876
1877 {
1878 dSP;
1879 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1880 PUTBACK;
1369 } 1881 }
1882
1883 SvREFCNT_dec (GvAV (PL_defgv));
1884 GvAV (PL_defgv) = coro->invoke_av;
1885 coro->invoke_av = 0;
1886
1887 return 0;
1888 }
1370} 1889}
1890
1891static void
1892slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1893{
1894 HV *hv = (HV *)SvRV (coro_current);
1895 struct coro *coro = SvSTATE_hv ((SV *)hv);
1896
1897 if (expect_true (coro->saved_deffh))
1898 {
1899 /* subsequent iteration */
1900 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1901 coro->saved_deffh = 0;
1902
1903 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1904 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1905 {
1906 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1907 coro->invoke_av = newAV ();
1908
1909 frame->prepare = prepare_nop;
1910 }
1911 else
1912 {
1913 av_clear (GvAV (PL_defgv));
1914 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1915
1916 coro->prio = 0;
1917
1918 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1919 api_trace (aTHX_ coro_current, 0);
1920
1921 frame->prepare = prepare_schedule;
1922 av_push (av_async_pool, SvREFCNT_inc (hv));
1923 }
1924 }
1925 else
1926 {
1927 /* first iteration, simply fall through */
1928 frame->prepare = prepare_nop;
1929 }
1930
1931 frame->check = slf_check_pool_handler;
1932 frame->data = (void *)coro;
1933}
1934
1935/*****************************************************************************/
1936/* rouse callback */
1937
1938#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1939
1940static void
1941coro_rouse_callback (pTHX_ CV *cv)
1942{
1943 dXSARGS;
1944 SV *data = (SV *)GENSUB_ARG;
1945
1946 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1947 {
1948 /* first call, set args */
1949 AV *av = newAV ();
1950 SV *coro = SvRV (data);
1951
1952 SvRV_set (data, (SV *)av);
1953 api_ready (aTHX_ coro);
1954 SvREFCNT_dec (coro);
1955
1956 /* better take a full copy of the arguments */
1957 while (items--)
1958 av_store (av, items, newSVsv (ST (items)));
1959 }
1960
1961 XSRETURN_EMPTY;
1962}
1963
1964static int
1965slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1966{
1967 SV *data = (SV *)frame->data;
1968
1969 if (CORO_THROW)
1970 return 0;
1971
1972 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1973 return 1;
1974
1975 /* now push all results on the stack */
1976 {
1977 dSP;
1978 AV *av = (AV *)SvRV (data);
1979 int i;
1980
1981 EXTEND (SP, AvFILLp (av) + 1);
1982 for (i = 0; i <= AvFILLp (av); ++i)
1983 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1984
1985 /* we have stolen the elements, so ste length to zero and free */
1986 AvFILLp (av) = -1;
1987 av_undef (av);
1988
1989 PUTBACK;
1990 }
1991
1992 return 0;
1993}
1994
1995static void
1996slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1997{
1998 SV *cb;
1999
2000 if (items)
2001 cb = arg [0];
2002 else
2003 {
2004 struct coro *coro = SvSTATE_current;
2005
2006 if (!coro->rouse_cb)
2007 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2008
2009 cb = sv_2mortal (coro->rouse_cb);
2010 coro->rouse_cb = 0;
2011 }
2012
2013 if (!SvROK (cb)
2014 || SvTYPE (SvRV (cb)) != SVt_PVCV
2015 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2016 croak ("Coro::rouse_wait called with illegal callback argument,");
2017
2018 {
2019 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2020 SV *data = (SV *)GENSUB_ARG;
2021
2022 frame->data = (void *)data;
2023 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2024 frame->check = slf_check_rouse_wait;
2025 }
2026}
2027
2028static SV *
2029coro_new_rouse_cb (pTHX)
2030{
2031 HV *hv = (HV *)SvRV (coro_current);
2032 struct coro *coro = SvSTATE_hv (hv);
2033 SV *data = newRV_inc ((SV *)hv);
2034 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2035
2036 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2037 SvREFCNT_dec (data); /* magicext increases the refcount */
2038
2039 SvREFCNT_dec (coro->rouse_cb);
2040 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2041
2042 return cb;
2043}
2044
2045/*****************************************************************************/
2046/* schedule-like-function opcode (SLF) */
2047
2048static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2049static const CV *slf_cv;
2050static SV **slf_argv;
2051static int slf_argc, slf_arga; /* count, allocated */
2052static I32 slf_ax; /* top of stack, for restore */
2053
2054/* this restores the stack in the case we patched the entersub, to */
2055/* recreate the stack frame as perl will on following calls */
2056/* since entersub cleared the stack */
2057static OP *
2058pp_restore (pTHX)
2059{
2060 int i;
2061 SV **SP = PL_stack_base + slf_ax;
2062
2063 PUSHMARK (SP);
2064
2065 EXTEND (SP, slf_argc + 1);
2066
2067 for (i = 0; i < slf_argc; ++i)
2068 PUSHs (sv_2mortal (slf_argv [i]));
2069
2070 PUSHs ((SV *)CvGV (slf_cv));
2071
2072 RETURNOP (slf_restore.op_first);
2073}
2074
2075static void
2076slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2077{
2078 SV **arg = (SV **)slf_frame.data;
2079
2080 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2081}
2082
2083static void
2084slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (items != 2)
2087 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2088
2089 frame->prepare = slf_prepare_transfer;
2090 frame->check = slf_check_nop;
2091 frame->data = (void *)arg; /* let's hope it will stay valid */
2092}
2093
2094static void
2095slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 frame->prepare = prepare_schedule;
2098 frame->check = slf_check_nop;
2099}
2100
2101static void
2102slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2103{
2104 struct coro *next = (struct coro *)slf_frame.data;
2105
2106 SvREFCNT_inc_NN (next->hv);
2107 prepare_schedule_to (aTHX_ ta, next);
2108}
2109
2110static void
2111slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 if (!items)
2114 croak ("Coro::schedule_to expects a coroutine argument, caught");
2115
2116 frame->data = (void *)SvSTATE (arg [0]);
2117 frame->prepare = slf_prepare_schedule_to;
2118 frame->check = slf_check_nop;
2119}
2120
2121static void
2122slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2123{
2124 api_ready (aTHX_ SvRV (coro_current));
2125
2126 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2127}
2128
2129static void
2130slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 frame->prepare = prepare_cede;
2133 frame->check = slf_check_nop;
2134}
2135
2136static void
2137slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2138{
2139 frame->prepare = prepare_cede_notself;
2140 frame->check = slf_check_nop;
2141}
2142
2143/*
2144 * these not obviously related functions are all rolled into one
2145 * function to increase chances that they all will call transfer with the same
2146 * stack offset
2147 * SLF stands for "schedule-like-function".
2148 */
2149static OP *
2150pp_slf (pTHX)
2151{
2152 I32 checkmark; /* mark SP to see how many elements check has pushed */
2153
2154 /* set up the slf frame, unless it has already been set-up */
2155 /* the latter happens when a new coro has been started */
2156 /* or when a new cctx was attached to an existing coroutine */
2157 if (expect_true (!slf_frame.prepare))
2158 {
2159 /* first iteration */
2160 dSP;
2161 SV **arg = PL_stack_base + TOPMARK + 1;
2162 int items = SP - arg; /* args without function object */
2163 SV *gv = *sp;
2164
2165 /* do a quick consistency check on the "function" object, and if it isn't */
2166 /* for us, divert to the real entersub */
2167 if (SvTYPE (gv) != SVt_PVGV
2168 || !GvCV (gv)
2169 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2170 return PL_ppaddr[OP_ENTERSUB](aTHX);
2171
2172 if (!(PL_op->op_flags & OPf_STACKED))
2173 {
2174 /* ampersand-form of call, use @_ instead of stack */
2175 AV *av = GvAV (PL_defgv);
2176 arg = AvARRAY (av);
2177 items = AvFILLp (av) + 1;
2178 }
2179
2180 /* now call the init function, which needs to set up slf_frame */
2181 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2182 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2183
2184 /* pop args */
2185 SP = PL_stack_base + POPMARK;
2186
2187 PUTBACK;
2188 }
2189
2190 /* now that we have a slf_frame, interpret it! */
2191 /* we use a callback system not to make the code needlessly */
2192 /* complicated, but so we can run multiple perl coros from one cctx */
2193
2194 do
2195 {
2196 struct coro_transfer_args ta;
2197
2198 slf_frame.prepare (aTHX_ &ta);
2199 TRANSFER (ta, 0);
2200
2201 checkmark = PL_stack_sp - PL_stack_base;
2202 }
2203 while (slf_frame.check (aTHX_ &slf_frame));
2204
2205 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2206
2207 /* exception handling */
2208 if (expect_false (CORO_THROW))
2209 {
2210 SV *exception = sv_2mortal (CORO_THROW);
2211
2212 CORO_THROW = 0;
2213 sv_setsv (ERRSV, exception);
2214 croak (0);
2215 }
2216
2217 /* return value handling - mostly like entersub */
2218 /* make sure we put something on the stack in scalar context */
2219 if (GIMME_V == G_SCALAR)
2220 {
2221 dSP;
2222 SV **bot = PL_stack_base + checkmark;
2223
2224 if (sp == bot) /* too few, push undef */
2225 bot [1] = &PL_sv_undef;
2226 else if (sp != bot + 1) /* too many, take last one */
2227 bot [1] = *sp;
2228
2229 SP = bot + 1;
2230
2231 PUTBACK;
2232 }
2233
2234 return NORMAL;
2235}
2236
2237static void
2238api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2239{
2240 int i;
2241 SV **arg = PL_stack_base + ax;
2242 int items = PL_stack_sp - arg + 1;
2243
2244 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2245
2246 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2247 && PL_op->op_ppaddr != pp_slf)
2248 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2249
2250 CvFLAGS (cv) |= CVf_SLF;
2251 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2252 slf_cv = cv;
2253
2254 /* we patch the op, and then re-run the whole call */
2255 /* we have to put the same argument on the stack for this to work */
2256 /* and this will be done by pp_restore */
2257 slf_restore.op_next = (OP *)&slf_restore;
2258 slf_restore.op_type = OP_CUSTOM;
2259 slf_restore.op_ppaddr = pp_restore;
2260 slf_restore.op_first = PL_op;
2261
2262 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2263
2264 if (PL_op->op_flags & OPf_STACKED)
2265 {
2266 if (items > slf_arga)
2267 {
2268 slf_arga = items;
2269 free (slf_argv);
2270 slf_argv = malloc (slf_arga * sizeof (SV *));
2271 }
2272
2273 slf_argc = items;
2274
2275 for (i = 0; i < items; ++i)
2276 slf_argv [i] = SvREFCNT_inc (arg [i]);
2277 }
2278 else
2279 slf_argc = 0;
2280
2281 PL_op->op_ppaddr = pp_slf;
2282 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2283
2284 PL_op = (OP *)&slf_restore;
2285}
2286
2287/*****************************************************************************/
2288/* PerlIO::cede */
2289
2290typedef struct
2291{
2292 PerlIOBuf base;
2293 NV next, every;
2294} PerlIOCede;
2295
2296static IV
2297PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2298{
2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2300
2301 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2302 self->next = nvtime () + self->every;
2303
2304 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2305}
2306
2307static SV *
2308PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2309{
2310 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2311
2312 return newSVnv (self->every);
2313}
2314
2315static IV
2316PerlIOCede_flush (pTHX_ PerlIO *f)
2317{
2318 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2319 double now = nvtime ();
2320
2321 if (now >= self->next)
2322 {
2323 api_cede (aTHX);
2324 self->next = now + self->every;
2325 }
2326
2327 return PerlIOBuf_flush (aTHX_ f);
2328}
2329
2330static PerlIO_funcs PerlIO_cede =
2331{
2332 sizeof(PerlIO_funcs),
2333 "cede",
2334 sizeof(PerlIOCede),
2335 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2336 PerlIOCede_pushed,
2337 PerlIOBuf_popped,
2338 PerlIOBuf_open,
2339 PerlIOBase_binmode,
2340 PerlIOCede_getarg,
2341 PerlIOBase_fileno,
2342 PerlIOBuf_dup,
2343 PerlIOBuf_read,
2344 PerlIOBuf_unread,
2345 PerlIOBuf_write,
2346 PerlIOBuf_seek,
2347 PerlIOBuf_tell,
2348 PerlIOBuf_close,
2349 PerlIOCede_flush,
2350 PerlIOBuf_fill,
2351 PerlIOBase_eof,
2352 PerlIOBase_error,
2353 PerlIOBase_clearerr,
2354 PerlIOBase_setlinebuf,
2355 PerlIOBuf_get_base,
2356 PerlIOBuf_bufsiz,
2357 PerlIOBuf_get_ptr,
2358 PerlIOBuf_get_cnt,
2359 PerlIOBuf_set_ptrcnt,
2360};
2361
2362/*****************************************************************************/
2363/* Coro::Semaphore & Coro::Signal */
2364
2365static SV *
2366coro_waitarray_new (pTHX_ int count)
2367{
2368 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2369 AV *av = newAV ();
2370 SV **ary;
2371
2372 /* unfortunately, building manually saves memory */
2373 Newx (ary, 2, SV *);
2374 AvALLOC (av) = ary;
2375#if PERL_VERSION_ATLEAST (5,10,0)
2376 AvARRAY (av) = ary;
2377#else
2378 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2379 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2380 SvPVX ((SV *)av) = (char *)ary;
2381#endif
2382 AvMAX (av) = 1;
2383 AvFILLp (av) = 0;
2384 ary [0] = newSViv (count);
2385
2386 return newRV_noinc ((SV *)av);
2387}
2388
2389/* semaphore */
2390
2391static void
2392coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2393{
2394 SV *count_sv = AvARRAY (av)[0];
2395 IV count = SvIVX (count_sv);
2396
2397 count += adjust;
2398 SvIVX (count_sv) = count;
2399
2400 /* now wake up as many waiters as are expected to lock */
2401 while (count > 0 && AvFILLp (av) > 0)
2402 {
2403 SV *cb;
2404
2405 /* swap first two elements so we can shift a waiter */
2406 AvARRAY (av)[0] = AvARRAY (av)[1];
2407 AvARRAY (av)[1] = count_sv;
2408 cb = av_shift (av);
2409
2410 if (SvOBJECT (cb))
2411 {
2412 api_ready (aTHX_ cb);
2413 --count;
2414 }
2415 else if (SvTYPE (cb) == SVt_PVCV)
2416 {
2417 dSP;
2418 PUSHMARK (SP);
2419 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2420 PUTBACK;
2421 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2422 }
2423
2424 SvREFCNT_dec (cb);
2425 }
2426}
2427
2428static void
2429coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2430{
2431 /* call $sem->adjust (0) to possibly wake up some other waiters */
2432 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2433}
2434
2435static int
2436slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2437{
2438 AV *av = (AV *)frame->data;
2439 SV *count_sv = AvARRAY (av)[0];
2440
2441 /* if we are about to throw, don't actually acquire the lock, just throw */
2442 if (CORO_THROW)
2443 return 0;
2444 else if (SvIVX (count_sv) > 0)
2445 {
2446 SvSTATE_current->on_destroy = 0;
2447
2448 if (acquire)
2449 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2450 else
2451 coro_semaphore_adjust (aTHX_ av, 0);
2452
2453 return 0;
2454 }
2455 else
2456 {
2457 int i;
2458 /* if we were woken up but can't down, we look through the whole */
2459 /* waiters list and only add us if we aren't in there already */
2460 /* this avoids some degenerate memory usage cases */
2461
2462 for (i = 1; i <= AvFILLp (av); ++i)
2463 if (AvARRAY (av)[i] == SvRV (coro_current))
2464 return 1;
2465
2466 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2467 return 1;
2468 }
2469}
2470
2471static int
2472slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2473{
2474 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2475}
2476
2477static int
2478slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2479{
2480 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2481}
2482
2483static void
2484slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2485{
2486 AV *av = (AV *)SvRV (arg [0]);
2487
2488 if (SvIVX (AvARRAY (av)[0]) > 0)
2489 {
2490 frame->data = (void *)av;
2491 frame->prepare = prepare_nop;
2492 }
2493 else
2494 {
2495 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2496
2497 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2498 frame->prepare = prepare_schedule;
2499
2500 /* to avoid race conditions when a woken-up coro gets terminated */
2501 /* we arrange for a temporary on_destroy that calls adjust (0) */
2502 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2503 }
2504}
2505
2506static void
2507slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2510 frame->check = slf_check_semaphore_down;
2511}
2512
2513static void
2514slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2515{
2516 if (items >= 2)
2517 {
2518 /* callback form */
2519 AV *av = (AV *)SvRV (arg [0]);
2520 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2521
2522 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2523
2524 if (SvIVX (AvARRAY (av)[0]) > 0)
2525 coro_semaphore_adjust (aTHX_ av, 0);
2526
2527 frame->prepare = prepare_nop;
2528 frame->check = slf_check_nop;
2529 }
2530 else
2531 {
2532 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2533 frame->check = slf_check_semaphore_wait;
2534 }
2535}
2536
2537/* signal */
2538
2539static void
2540coro_signal_wake (pTHX_ AV *av, int count)
2541{
2542 SvIVX (AvARRAY (av)[0]) = 0;
2543
2544 /* now signal count waiters */
2545 while (count > 0 && AvFILLp (av) > 0)
2546 {
2547 SV *cb;
2548
2549 /* swap first two elements so we can shift a waiter */
2550 cb = AvARRAY (av)[0];
2551 AvARRAY (av)[0] = AvARRAY (av)[1];
2552 AvARRAY (av)[1] = cb;
2553
2554 cb = av_shift (av);
2555
2556 api_ready (aTHX_ cb);
2557 sv_setiv (cb, 0); /* signal waiter */
2558 SvREFCNT_dec (cb);
2559
2560 --count;
2561 }
2562}
2563
2564static int
2565slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2566{
2567 /* if we are about to throw, also stop waiting */
2568 return SvROK ((SV *)frame->data) && !CORO_THROW;
2569}
2570
2571static void
2572slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2573{
2574 AV *av = (AV *)SvRV (arg [0]);
2575
2576 if (SvIVX (AvARRAY (av)[0]))
2577 {
2578 SvIVX (AvARRAY (av)[0]) = 0;
2579 frame->prepare = prepare_nop;
2580 frame->check = slf_check_nop;
2581 }
2582 else
2583 {
2584 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2585
2586 av_push (av, waiter);
2587
2588 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2589 frame->prepare = prepare_schedule;
2590 frame->check = slf_check_signal_wait;
2591 }
2592}
2593
2594/*****************************************************************************/
2595/* Coro::AIO */
2596
2597#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2598
2599/* helper storage struct */
2600struct io_state
2601{
2602 int errorno;
2603 I32 laststype; /* U16 in 5.10.0 */
2604 int laststatval;
2605 Stat_t statcache;
2606};
2607
2608static void
2609coro_aio_callback (pTHX_ CV *cv)
2610{
2611 dXSARGS;
2612 AV *state = (AV *)GENSUB_ARG;
2613 SV *coro = av_pop (state);
2614 SV *data_sv = newSV (sizeof (struct io_state));
2615
2616 av_extend (state, items - 1);
2617
2618 sv_upgrade (data_sv, SVt_PV);
2619 SvCUR_set (data_sv, sizeof (struct io_state));
2620 SvPOK_only (data_sv);
2621
2622 {
2623 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2624
2625 data->errorno = errno;
2626 data->laststype = PL_laststype;
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629 }
2630
2631 /* now build the result vector out of all the parameters and the data_sv */
2632 {
2633 int i;
2634
2635 for (i = 0; i < items; ++i)
2636 av_push (state, SvREFCNT_inc_NN (ST (i)));
2637 }
2638
2639 av_push (state, data_sv);
2640
2641 api_ready (aTHX_ coro);
2642 SvREFCNT_dec (coro);
2643 SvREFCNT_dec ((AV *)state);
2644}
2645
2646static int
2647slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2648{
2649 AV *state = (AV *)frame->data;
2650
2651 /* if we are about to throw, return early */
2652 /* this does not cancel the aio request, but at least */
2653 /* it quickly returns */
2654 if (CORO_THROW)
2655 return 0;
2656
2657 /* one element that is an RV? repeat! */
2658 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2659 return 1;
2660
2661 /* restore status */
2662 {
2663 SV *data_sv = av_pop (state);
2664 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2665
2666 errno = data->errorno;
2667 PL_laststype = data->laststype;
2668 PL_laststatval = data->laststatval;
2669 PL_statcache = data->statcache;
2670
2671 SvREFCNT_dec (data_sv);
2672 }
2673
2674 /* push result values */
2675 {
2676 dSP;
2677 int i;
2678
2679 EXTEND (SP, AvFILLp (state) + 1);
2680 for (i = 0; i <= AvFILLp (state); ++i)
2681 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2682
2683 PUTBACK;
2684 }
2685
2686 return 0;
2687}
2688
2689static void
2690slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2691{
2692 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2693 SV *coro_hv = SvRV (coro_current);
2694 struct coro *coro = SvSTATE_hv (coro_hv);
2695
2696 /* put our coroutine id on the state arg */
2697 av_push (state, SvREFCNT_inc_NN (coro_hv));
2698
2699 /* first see whether we have a non-zero priority and set it as AIO prio */
2700 if (coro->prio)
2701 {
2702 dSP;
2703
2704 static SV *prio_cv;
2705 static SV *prio_sv;
2706
2707 if (expect_false (!prio_cv))
2708 {
2709 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2710 prio_sv = newSViv (0);
2711 }
2712
2713 PUSHMARK (SP);
2714 sv_setiv (prio_sv, coro->prio);
2715 XPUSHs (prio_sv);
2716
2717 PUTBACK;
2718 call_sv (prio_cv, G_VOID | G_DISCARD);
2719 }
2720
2721 /* now call the original request */
2722 {
2723 dSP;
2724 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2725 int i;
2726
2727 PUSHMARK (SP);
2728
2729 /* first push all args to the stack */
2730 EXTEND (SP, items + 1);
2731
2732 for (i = 0; i < items; ++i)
2733 PUSHs (arg [i]);
2734
2735 /* now push the callback closure */
2736 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2737
2738 /* now call the AIO function - we assume our request is uncancelable */
2739 PUTBACK;
2740 call_sv ((SV *)req, G_VOID | G_DISCARD);
2741 }
2742
2743 /* now that the requets is going, we loop toll we have a result */
2744 frame->data = (void *)state;
2745 frame->prepare = prepare_schedule;
2746 frame->check = slf_check_aio_req;
2747}
2748
2749static void
2750coro_aio_req_xs (pTHX_ CV *cv)
2751{
2752 dXSARGS;
2753
2754 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2755
2756 XSRETURN_EMPTY;
2757}
2758
2759/*****************************************************************************/
2760
2761#if CORO_CLONE
2762# include "clone.c"
2763#endif
1371 2764
1372MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2765MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1373 2766
1374PROTOTYPES: DISABLE 2767PROTOTYPES: DISABLE
1375 2768
1376BOOT: 2769BOOT:
1377{ 2770{
1378#ifdef USE_ITHREADS 2771#ifdef USE_ITHREADS
1379 MUTEX_INIT (&coro_mutex); 2772# if CORO_PTHREAD
2773 coro_thx = PERL_GET_CONTEXT;
2774# endif
1380#endif 2775#endif
1381 BOOT_PAGESIZE; 2776 BOOT_PAGESIZE;
1382 2777
2778 cctx_current = cctx_new_empty ();
2779
1383 irsgv = gv_fetchpv ("/" , GV_ADD, SVt_PV); 2780 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1384 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD, SVt_PVIO); 2781 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2782
2783 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2784 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2785 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2786
2787 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2788 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2789 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1385 2790
1386 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2791 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1387 2792
1388 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2793 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1389 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2794 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1394 main_top_env = PL_top_env; 2799 main_top_env = PL_top_env;
1395 2800
1396 while (main_top_env->je_prev) 2801 while (main_top_env->je_prev)
1397 main_top_env = main_top_env->je_prev; 2802 main_top_env = main_top_env->je_prev;
1398 2803
2804 {
2805 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2806
2807 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2808 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2809
2810 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2811 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2812 }
2813
1399 coroapi.ver = CORO_API_VERSION; 2814 coroapi.ver = CORO_API_VERSION;
2815 coroapi.rev = CORO_API_REVISION;
2816
1400 coroapi.transfer = api_transfer; 2817 coroapi.transfer = api_transfer;
2818
2819 coroapi.sv_state = SvSTATE_;
2820 coroapi.execute_slf = api_execute_slf;
2821 coroapi.prepare_nop = prepare_nop;
2822 coroapi.prepare_schedule = prepare_schedule;
2823 coroapi.prepare_cede = prepare_cede;
2824 coroapi.prepare_cede_notself = prepare_cede_notself;
2825
2826 {
2827 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2828
2829 if (!svp) croak ("Time::HiRes is required");
2830 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2831
2832 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2833 }
1401 2834
1402 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2835 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1403} 2836}
1404 2837
1405SV * 2838SV *
1406new (char *klass, ...) 2839new (char *klass, ...)
2840 ALIAS:
2841 Coro::new = 1
1407 CODE: 2842 CODE:
1408{ 2843{
1409 struct coro *coro; 2844 struct coro *coro;
2845 MAGIC *mg;
1410 HV *hv; 2846 HV *hv;
2847 CV *cb;
1411 int i; 2848 int i;
2849
2850 if (items > 1)
2851 {
2852 cb = coro_sv_2cv (aTHX_ ST (1));
2853
2854 if (!ix)
2855 {
2856 if (CvISXSUB (cb))
2857 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2858
2859 if (!CvROOT (cb))
2860 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2861 }
2862 }
1412 2863
1413 Newz (0, coro, 1, struct coro); 2864 Newz (0, coro, 1, struct coro);
1414 coro->args = newAV (); 2865 coro->args = newAV ();
1415 coro->flags = CF_NEW; 2866 coro->flags = CF_NEW;
1416 2867
1417 if (coro_first) coro_first->prev = coro; 2868 if (coro_first) coro_first->prev = coro;
1418 coro->next = coro_first; 2869 coro->next = coro_first;
1419 coro_first = coro; 2870 coro_first = coro;
1420 2871
1421 coro->hv = hv = newHV (); 2872 coro->hv = hv = newHV ();
1422 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2873 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2874 mg->mg_flags |= MGf_DUP;
1423 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2875 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1424 2876
2877 if (items > 1)
2878 {
2879 av_extend (coro->args, items - 1 + ix - 1);
2880
2881 if (ix)
2882 {
2883 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2884 cb = cv_coro_run;
2885 }
2886
2887 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2888
1425 for (i = 1; i < items; i++) 2889 for (i = 2; i < items; i++)
1426 av_push (coro->args, newSVsv (ST (i))); 2890 av_push (coro->args, newSVsv (ST (i)));
2891 }
1427} 2892}
1428 OUTPUT: 2893 OUTPUT:
1429 RETVAL 2894 RETVAL
1430 2895
1431# these not obviously related functions are all rolled into the same xs
1432# function to increase chances that they all will call transfer with the same
1433# stack offset
1434void 2896void
1435_set_stacklevel (...) 2897transfer (...)
1436 ALIAS: 2898 PROTOTYPE: $$
1437 Coro::State::transfer = 1 2899 CODE:
1438 Coro::schedule = 2 2900 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1439 Coro::cede = 3
1440 Coro::cede_notself = 4
1441 CODE:
1442{
1443 struct transfer_args ta;
1444
1445 switch (ix)
1446 {
1447 case 0:
1448 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1449 ta.next = 0;
1450 break;
1451
1452 case 1:
1453 if (items != 2)
1454 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1455
1456 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1457 break;
1458
1459 case 2:
1460 prepare_schedule (aTHX_ &ta);
1461 break;
1462
1463 case 3:
1464 prepare_cede (aTHX_ &ta);
1465 break;
1466
1467 case 4:
1468 if (!prepare_cede_notself (aTHX_ &ta))
1469 XSRETURN_EMPTY;
1470
1471 break;
1472 }
1473
1474 BARRIER;
1475 TRANSFER (ta);
1476
1477 if (GIMME_V != G_VOID && ta.next != ta.prev)
1478 XSRETURN_YES;
1479}
1480 2901
1481bool 2902bool
1482_destroy (SV *coro_sv) 2903_destroy (SV *coro_sv)
1483 CODE: 2904 CODE:
1484 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2905 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1485 OUTPUT: 2906 OUTPUT:
1486 RETVAL 2907 RETVAL
1487 2908
1488void 2909void
1489_exit (code) 2910_exit (int code)
1490 int code
1491 PROTOTYPE: $ 2911 PROTOTYPE: $
1492 CODE: 2912 CODE:
1493 _exit (code); 2913 _exit (code);
1494 2914
2915SV *
2916clone (Coro::State coro)
2917 CODE:
2918{
2919#if CORO_CLONE
2920 struct coro *ncoro = coro_clone (coro);
2921 MAGIC *mg;
2922 /* TODO: too much duplication */
2923 ncoro->hv = newHV ();
2924 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2925 mg->mg_flags |= MGf_DUP;
2926 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2927#else
2928 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2929#endif
2930}
2931 OUTPUT:
2932 RETVAL
2933
1495int 2934int
1496cctx_stacksize (int new_stacksize = 0) 2935cctx_stacksize (int new_stacksize = 0)
2936 PROTOTYPE: ;$
1497 CODE: 2937 CODE:
1498 RETVAL = coro_stacksize; 2938 RETVAL = cctx_stacksize;
1499 if (new_stacksize) 2939 if (new_stacksize)
2940 {
1500 coro_stacksize = new_stacksize; 2941 cctx_stacksize = new_stacksize;
2942 ++cctx_gen;
2943 }
1501 OUTPUT: 2944 OUTPUT:
1502 RETVAL 2945 RETVAL
1503 2946
1504int 2947int
2948cctx_max_idle (int max_idle = 0)
2949 PROTOTYPE: ;$
2950 CODE:
2951 RETVAL = cctx_max_idle;
2952 if (max_idle > 1)
2953 cctx_max_idle = max_idle;
2954 OUTPUT:
2955 RETVAL
2956
2957int
1505cctx_count () 2958cctx_count ()
2959 PROTOTYPE:
1506 CODE: 2960 CODE:
1507 RETVAL = cctx_count; 2961 RETVAL = cctx_count;
1508 OUTPUT: 2962 OUTPUT:
1509 RETVAL 2963 RETVAL
1510 2964
1511int 2965int
1512cctx_idle () 2966cctx_idle ()
2967 PROTOTYPE:
1513 CODE: 2968 CODE:
1514 RETVAL = cctx_idle; 2969 RETVAL = cctx_idle;
1515 OUTPUT: 2970 OUTPUT:
1516 RETVAL 2971 RETVAL
1517 2972
1518void 2973void
1519list () 2974list ()
2975 PROTOTYPE:
1520 PPCODE: 2976 PPCODE:
1521{ 2977{
1522 struct coro *coro; 2978 struct coro *coro;
1523 for (coro = coro_first; coro; coro = coro->next) 2979 for (coro = coro_first; coro; coro = coro->next)
1524 if (coro->hv) 2980 if (coro->hv)
… …
1529call (Coro::State coro, SV *coderef) 2985call (Coro::State coro, SV *coderef)
1530 ALIAS: 2986 ALIAS:
1531 eval = 1 2987 eval = 1
1532 CODE: 2988 CODE:
1533{ 2989{
1534 if (coro->mainstack) 2990 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1535 { 2991 {
1536 struct coro temp; 2992 struct coro temp;
1537 Zero (&temp, 1, struct coro);
1538 2993
1539 if (!(coro->flags & CF_RUNNING)) 2994 if (!(coro->flags & CF_RUNNING))
1540 { 2995 {
2996 PUTBACK;
1541 save_perl (aTHX_ &temp); 2997 save_perl (aTHX_ &temp);
1542 load_perl (aTHX_ coro); 2998 load_perl (aTHX_ coro);
1543 } 2999 }
1544 3000
1545 { 3001 {
1546 dSP; 3002 dSP;
1547 ENTER; 3003 ENTER;
1548 SAVETMPS; 3004 SAVETMPS;
3005 PUTBACK;
3006 PUSHSTACK;
1549 PUSHMARK (SP); 3007 PUSHMARK (SP);
1550 PUTBACK; 3008
1551 if (ix) 3009 if (ix)
1552 eval_sv (coderef, 0); 3010 eval_sv (coderef, 0);
1553 else 3011 else
1554 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3012 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3013
3014 POPSTACK;
1555 SPAGAIN; 3015 SPAGAIN;
1556 FREETMPS; 3016 FREETMPS;
1557 LEAVE; 3017 LEAVE;
1558 PUTBACK; 3018 PUTBACK;
1559 } 3019 }
1560 3020
1561 if (!(coro->flags & CF_RUNNING)) 3021 if (!(coro->flags & CF_RUNNING))
1562 { 3022 {
1563 save_perl (aTHX_ coro); 3023 save_perl (aTHX_ coro);
1564 load_perl (aTHX_ &temp); 3024 load_perl (aTHX_ &temp);
3025 SPAGAIN;
1565 } 3026 }
1566 } 3027 }
1567} 3028}
1568 3029
1569SV * 3030SV *
… …
1578 RETVAL = boolSV (coro->flags & ix); 3039 RETVAL = boolSV (coro->flags & ix);
1579 OUTPUT: 3040 OUTPUT:
1580 RETVAL 3041 RETVAL
1581 3042
1582void 3043void
3044throw (Coro::State self, SV *throw = &PL_sv_undef)
3045 PROTOTYPE: $;$
3046 CODE:
3047{
3048 struct coro *current = SvSTATE_current;
3049 SV **throwp = self == current ? &CORO_THROW : &self->except;
3050 SvREFCNT_dec (*throwp);
3051 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3052}
3053
3054void
1583api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3055api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3056 PROTOTYPE: $;$
3057 C_ARGS: aTHX_ coro, flags
1584 3058
1585SV * 3059SV *
1586has_stack (Coro::State coro) 3060has_cctx (Coro::State coro)
1587 PROTOTYPE: $ 3061 PROTOTYPE: $
1588 CODE: 3062 CODE:
1589 RETVAL = boolSV (!!coro->cctx); 3063 /* maybe manage the running flag differently */
3064 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1590 OUTPUT: 3065 OUTPUT:
1591 RETVAL 3066 RETVAL
1592 3067
1593int 3068int
1594is_traced (Coro::State coro) 3069is_traced (Coro::State coro)
… …
1596 CODE: 3071 CODE:
1597 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3072 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1598 OUTPUT: 3073 OUTPUT:
1599 RETVAL 3074 RETVAL
1600 3075
1601IV 3076UV
1602rss (Coro::State coro) 3077rss (Coro::State coro)
1603 PROTOTYPE: $ 3078 PROTOTYPE: $
1604 ALIAS: 3079 ALIAS:
1605 usecount = 1 3080 usecount = 1
1606 CODE: 3081 CODE:
… …
1610 case 1: RETVAL = coro->usecount; break; 3085 case 1: RETVAL = coro->usecount; break;
1611 } 3086 }
1612 OUTPUT: 3087 OUTPUT:
1613 RETVAL 3088 RETVAL
1614 3089
3090void
3091force_cctx ()
3092 PROTOTYPE:
3093 CODE:
3094 cctx_current->idle_sp = 0;
3095
3096void
3097swap_defsv (Coro::State self)
3098 PROTOTYPE: $
3099 ALIAS:
3100 swap_defav = 1
3101 CODE:
3102 if (!self->slot)
3103 croak ("cannot swap state with coroutine that has no saved state,");
3104 else
3105 {
3106 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3107 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3108
3109 SV *tmp = *src; *src = *dst; *dst = tmp;
3110 }
3111
1615 3112
1616MODULE = Coro::State PACKAGE = Coro 3113MODULE = Coro::State PACKAGE = Coro
1617 3114
1618BOOT: 3115BOOT:
1619{ 3116{
1620 int i; 3117 int i;
1621 3118
1622 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3119 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1623 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3120 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3121 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3122 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3123 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1624 av_async_pool = get_av ("Coro::async_pool", TRUE); 3124 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3125 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3126 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3127 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1625 3128
1626 coro_current = get_sv ("Coro::current", FALSE); 3129 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1627 SvREADONLY_on (coro_current); 3130 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3131 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3132 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1628 3133
1629 coro_stash = gv_stashpv ("Coro", TRUE); 3134 coro_stash = gv_stashpv ("Coro", TRUE);
1630 3135
1631 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3136 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1632 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3137 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1633 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3138 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1634 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3139 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1637 3142
1638 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1639 coro_ready[i] = newAV (); 3144 coro_ready[i] = newAV ();
1640 3145
1641 { 3146 {
1642 SV *sv = perl_get_sv("Coro::API", 1); 3147 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1643 3148
1644 coroapi.schedule = api_schedule; 3149 coroapi.schedule = api_schedule;
3150 coroapi.schedule_to = api_schedule_to;
1645 coroapi.cede = api_cede; 3151 coroapi.cede = api_cede;
1646 coroapi.cede_notself = api_cede_notself; 3152 coroapi.cede_notself = api_cede_notself;
1647 coroapi.ready = api_ready; 3153 coroapi.ready = api_ready;
1648 coroapi.is_ready = api_is_ready; 3154 coroapi.is_ready = api_is_ready;
1649 coroapi.nready = &coro_nready; 3155 coroapi.nready = coro_nready;
1650 coroapi.current = coro_current; 3156 coroapi.current = coro_current;
1651 3157
1652 GCoroAPI = &coroapi; 3158 /*GCoroAPI = &coroapi;*/
1653 sv_setiv (sv, (IV)&coroapi); 3159 sv_setiv (sv, (IV)&coroapi);
1654 SvREADONLY_on (sv); 3160 SvREADONLY_on (sv);
1655 } 3161 }
1656} 3162}
3163
3164void
3165terminate (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3168
3169void
3170schedule (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3173
3174void
3175schedule_to (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3178
3179void
3180cede_to (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3183
3184void
3185cede (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_cede);
3188
3189void
3190cede_notself (...)
3191 CODE:
3192 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3193
3194void
3195_cancel (Coro::State self)
3196 CODE:
3197 coro_state_destroy (aTHX_ self);
3198 coro_call_on_destroy (aTHX_ self);
1657 3199
1658void 3200void
1659_set_current (SV *current) 3201_set_current (SV *current)
1660 PROTOTYPE: $ 3202 PROTOTYPE: $
1661 CODE: 3203 CODE:
1662 SvREFCNT_dec (SvRV (coro_current)); 3204 SvREFCNT_dec (SvRV (coro_current));
1663 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3205 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3206
3207void
3208_set_readyhook (SV *hook)
3209 PROTOTYPE: $
3210 CODE:
3211 SvREFCNT_dec (coro_readyhook);
3212 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1664 3213
1665int 3214int
1666prio (Coro::State coro, int newprio = 0) 3215prio (Coro::State coro, int newprio = 0)
3216 PROTOTYPE: $;$
1667 ALIAS: 3217 ALIAS:
1668 nice = 1 3218 nice = 1
1669 CODE: 3219 CODE:
1670{ 3220{
1671 RETVAL = coro->prio; 3221 RETVAL = coro->prio;
… …
1686 3236
1687SV * 3237SV *
1688ready (SV *self) 3238ready (SV *self)
1689 PROTOTYPE: $ 3239 PROTOTYPE: $
1690 CODE: 3240 CODE:
1691 RETVAL = boolSV (api_ready (self)); 3241 RETVAL = boolSV (api_ready (aTHX_ self));
1692 OUTPUT: 3242 OUTPUT:
1693 RETVAL 3243 RETVAL
1694 3244
1695int 3245int
1696nready (...) 3246nready (...)
… …
1698 CODE: 3248 CODE:
1699 RETVAL = coro_nready; 3249 RETVAL = coro_nready;
1700 OUTPUT: 3250 OUTPUT:
1701 RETVAL 3251 RETVAL
1702 3252
1703# for async_pool speedup
1704void 3253void
1705_pool_1 (SV *cb) 3254_pool_handler (...)
1706 CODE: 3255 CODE:
1707{ 3256 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1708 struct coro *coro = SvSTATE (coro_current);
1709 HV *hv = (HV *)SvRV (coro_current);
1710 AV *defav = GvAV (PL_defgv);
1711 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1712 AV *invoke_av;
1713 int i, len;
1714 3257
1715 if (!invoke) 3258void
1716 croak ("\3terminate\2\n"); 3259async_pool (SV *cv, ...)
3260 PROTOTYPE: &@
3261 PPCODE:
3262{
3263 HV *hv = (HV *)av_pop (av_async_pool);
3264 AV *av = newAV ();
3265 SV *cb = ST (0);
3266 int i;
1717 3267
1718 SvREFCNT_dec (coro->saved_deffh); 3268 av_extend (av, items - 2);
1719 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3269 for (i = 1; i < items; ++i)
3270 av_push (av, SvREFCNT_inc_NN (ST (i)));
1720 3271
1721 hv_store (hv, "desc", sizeof ("desc") - 1, 3272 if ((SV *)hv == &PL_sv_undef)
1722 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1723
1724 invoke_av = (AV *)SvRV (invoke);
1725 len = av_len (invoke_av);
1726
1727 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1728
1729 if (len > 0)
1730 { 3273 {
1731 av_fill (defav, len - 1); 3274 PUSHMARK (SP);
1732 for (i = 0; i < len; ++i) 3275 EXTEND (SP, 2);
1733 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3276 PUSHs (sv_Coro);
3277 PUSHs ((SV *)cv_pool_handler);
3278 PUTBACK;
3279 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3280 SPAGAIN;
3281
3282 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1734 } 3283 }
1735 3284
3285 {
3286 struct coro *coro = SvSTATE_hv (hv);
3287
3288 assert (!coro->invoke_cb);
3289 assert (!coro->invoke_av);
3290 coro->invoke_cb = SvREFCNT_inc (cb);
3291 coro->invoke_av = av;
3292 }
3293
3294 api_ready (aTHX_ (SV *)hv);
3295
3296 if (GIMME_V != G_VOID)
3297 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3298 else
1736 SvREFCNT_dec (invoke); 3299 SvREFCNT_dec (hv);
1737} 3300}
1738 3301
1739void 3302SV *
1740_pool_2 (SV *cb) 3303rouse_cb ()
3304 PROTOTYPE:
1741 CODE: 3305 CODE:
1742{ 3306 RETVAL = coro_new_rouse_cb (aTHX);
1743 struct coro *coro = SvSTATE (coro_current);
1744
1745 sv_setsv (cb, &PL_sv_undef);
1746
1747 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1748 coro->saved_deffh = 0;
1749
1750 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1751 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1752 croak ("\3terminate\2\n");
1753
1754 av_clear (GvAV (PL_defgv));
1755 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1757
1758 coro->prio = 0;
1759
1760 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1761 api_trace (coro_current, 0);
1762
1763 av_push (av_async_pool, newSVsv (coro_current));
1764}
1765
1766
1767MODULE = Coro::State PACKAGE = Coro::AIO
1768
1769SV *
1770_get_state ()
1771 CODE:
1772{
1773 struct io_state *data;
1774
1775 RETVAL = newSV (sizeof (struct io_state));
1776 data = (struct io_state *)SvPVX (RETVAL);
1777 SvCUR_set (RETVAL, sizeof (struct io_state));
1778 SvPOK_only (RETVAL);
1779
1780 data->errorno = errno;
1781 data->laststype = PL_laststype;
1782 data->laststatval = PL_laststatval;
1783 data->statcache = PL_statcache;
1784}
1785 OUTPUT: 3307 OUTPUT:
1786 RETVAL 3308 RETVAL
1787 3309
1788void 3310void
1789_set_state (char *data_) 3311rouse_wait (...)
1790 PROTOTYPE: $ 3312 PROTOTYPE: ;$
3313 PPCODE:
3314 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3315
3316
3317MODULE = Coro::State PACKAGE = PerlIO::cede
3318
3319BOOT:
3320 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3321
3322
3323MODULE = Coro::State PACKAGE = Coro::Semaphore
3324
3325SV *
3326new (SV *klass, SV *count = 0)
1791 CODE: 3327 CODE:
1792{ 3328 RETVAL = sv_bless (
1793 struct io_state *data = (void *)data_; 3329 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3330 GvSTASH (CvGV (cv))
3331 );
3332 OUTPUT:
3333 RETVAL
1794 3334
1795 errno = data->errorno; 3335# helper for Coro::Channel
1796 PL_laststype = data->laststype; 3336SV *
1797 PL_laststatval = data->laststatval; 3337_alloc (int count)
1798 PL_statcache = data->statcache; 3338 CODE:
1799} 3339 RETVAL = coro_waitarray_new (aTHX_ count);
3340 OUTPUT:
3341 RETVAL
1800 3342
3343SV *
3344count (SV *self)
3345 CODE:
3346 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3347 OUTPUT:
3348 RETVAL
3349
3350void
3351up (SV *self, int adjust = 1)
3352 ALIAS:
3353 adjust = 1
3354 CODE:
3355 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3356
3357void
3358down (...)
3359 CODE:
3360 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3361
3362void
3363wait (...)
3364 CODE:
3365 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3366
3367void
3368try (SV *self)
3369 PPCODE:
3370{
3371 AV *av = (AV *)SvRV (self);
3372 SV *count_sv = AvARRAY (av)[0];
3373 IV count = SvIVX (count_sv);
3374
3375 if (count > 0)
3376 {
3377 --count;
3378 SvIVX (count_sv) = count;
3379 XSRETURN_YES;
3380 }
3381 else
3382 XSRETURN_NO;
3383}
3384
3385void
3386waiters (SV *self)
3387 PPCODE:
3388{
3389 AV *av = (AV *)SvRV (self);
3390 int wcount = AvFILLp (av) + 1 - 1;
3391
3392 if (GIMME_V == G_SCALAR)
3393 XPUSHs (sv_2mortal (newSViv (wcount)));
3394 else
3395 {
3396 int i;
3397 EXTEND (SP, wcount);
3398 for (i = 1; i <= wcount; ++i)
3399 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3400 }
3401}
3402
3403MODULE = Coro::State PACKAGE = Coro::Signal
3404
3405SV *
3406new (SV *klass)
3407 CODE:
3408 RETVAL = sv_bless (
3409 coro_waitarray_new (aTHX_ 0),
3410 GvSTASH (CvGV (cv))
3411 );
3412 OUTPUT:
3413 RETVAL
3414
3415void
3416wait (...)
3417 CODE:
3418 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3419
3420void
3421broadcast (SV *self)
3422 CODE:
3423{
3424 AV *av = (AV *)SvRV (self);
3425 coro_signal_wake (aTHX_ av, AvFILLp (av));
3426}
3427
3428void
3429send (SV *self)
3430 CODE:
3431{
3432 AV *av = (AV *)SvRV (self);
3433
3434 if (AvFILLp (av))
3435 coro_signal_wake (aTHX_ av, 1);
3436 else
3437 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3438}
3439
3440IV
3441awaited (SV *self)
3442 CODE:
3443 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3444 OUTPUT:
3445 RETVAL
3446
3447
3448MODULE = Coro::State PACKAGE = Coro::AnyEvent
3449
3450BOOT:
3451 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3452
3453void
3454_schedule (...)
3455 CODE:
3456{
3457 static int incede;
3458
3459 api_cede_notself (aTHX);
3460
3461 ++incede;
3462 while (coro_nready >= incede && api_cede (aTHX))
3463 ;
3464
3465 sv_setsv (sv_activity, &PL_sv_undef);
3466 if (coro_nready >= incede)
3467 {
3468 PUSHMARK (SP);
3469 PUTBACK;
3470 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3471 }
3472
3473 --incede;
3474}
3475
3476
3477MODULE = Coro::State PACKAGE = Coro::AIO
3478
3479void
3480_register (char *target, char *proto, SV *req)
3481 CODE:
3482{
3483 CV *req_cv = coro_sv_2cv (aTHX_ req);
3484 /* newXSproto doesn't return the CV on 5.8 */
3485 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3486 sv_setpv ((SV *)slf_cv, proto);
3487 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3488}
3489

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