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Comparing Coro/Coro/State.xs (file contents):
Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC vs.
Revision 1.328 by root, Tue Nov 25 09:49:43 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 */
181
182static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
136 187
137/* async_pool helper stuff */ 188/* async_pool helper stuff */
138static SV *sv_pool_rss; 189static SV *sv_pool_rss;
139static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
140static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
141 199
142static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
144 202
145enum { 203enum {
… …
150 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
151 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
152}; 210};
153 211
154/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
155typedef struct coro_cctx { 213typedef struct coro_cctx
214{
156 struct coro_cctx *next; 215 struct coro_cctx *next;
157 216
158 /* the stack */ 217 /* the stack */
159 void *sptr; 218 void *sptr;
160 size_t ssize; 219 size_t ssize;
… …
163 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
164 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
165 JMPENV *top_env; 224 JMPENV *top_env;
166 coro_context cctx; 225 coro_context cctx;
167 226
227 U32 gen;
168#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
169 int valgrind_id; 229 int valgrind_id;
170#endif 230#endif
171 unsigned char flags; 231 unsigned char flags;
172} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
173 237
174enum { 238enum {
175 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
176 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
177 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
178 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179}; 243};
180 244
181/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
182struct coro { 246typedef struct
183 /* the c coroutine allocated to this perl coroutine, if any */ 247{
184 coro_cctx *cctx; 248 SV *defsv;
185 249 AV *defav;
186 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
187 AV *args; 251 SV *irsgv;
188 int refcnt; 252 HV *hinthv;
189 int save; /* CORO_SAVE flags */
190 int flags; /* CF_ flags */
191
192 /* optionally saved, might be zero */
193 AV *defav; /* @_ */
194 SV *defsv; /* $_ */
195 SV *errsv; /* $@ */
196 GV *deffh; /* default filehandle */
197 SV *irssv; /* $/ */
198 SV *irssv_sv; /* real $/ cache */
199
200#define VAR(name,type) type name; 253#define VAR(name,type) type name;
201# include "state.h" 254# include "state.h"
202#undef VAR 255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
260/* this is a structure representing a perl-level coroutine */
261struct coro {
262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx;
264
265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */
269
270 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
276
277 /* statistics */
278 int usecount; /* number of transfers to this coro */
203 279
204 /* coro process data */ 280 /* coro process data */
205 int prio; 281 int prio;
282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
284
285 /* async_pool */
286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
206 289
207 /* linked list */ 290 /* linked list */
208 struct coro *next, *prev; 291 struct coro *next, *prev;
209 HV *hv; /* the perl hash associated with this coro, if any */
210}; 292};
211 293
212typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
213typedef 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 */
214 301
215/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
216 303
217#define PRIO_MAX 3 304#define PRIO_MAX 3
218#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
221#define PRIO_IDLE -3 308#define PRIO_IDLE -3
222#define PRIO_MIN -4 309#define PRIO_MIN -4
223 310
224/* for Coro.pm */ 311/* for Coro.pm */
225static SV *coro_current; 312static SV *coro_current;
313static SV *coro_readyhook;
226static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
227static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
228static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
229 318
230/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
231 320
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
232static 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 *
233coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
234{ 362{
235 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
236 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
237 365
238 newpadlist = newAV (); 366 newpadlist = newAV ();
239 AvREAL_off (newpadlist); 367 AvREAL_off (newpadlist);
240#if PERL_VERSION_ATLEAST (5,9,0) 368#if PERL_VERSION_ATLEAST (5,10,0)
241 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
242#else 370#else
243 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
244#endif 372#endif
245 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
246 --AvFILLp (padlist); 374 --AvFILLp (padlist);
247 375
248 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
249 av_store (newpadlist, 1, (SV *)newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
250 378
251 return newpadlist; 379 return newpadlist;
252} 380}
253 381
… …
283 411
284 /* casting is fun. */ 412 /* casting is fun. */
285 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
286 free_padlist (aTHX_ padlist); 414 free_padlist (aTHX_ padlist);
287 415
288 SvREFCNT_dec (av); 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
289 417
290 return 0; 418 return 0;
291} 419}
292 420
421#define CORO_MAGIC_type_cv 26
293#define PERL_MAGIC_coro PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
294 423
295static 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};
296 428
297#define CORO_MAGIC(cv) \ 429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
298 SvMAGIC (cv) \ 431 ? SvMAGIC (sv) \
299 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 432 : mg_find (sv, type))
300 ? SvMAGIC (cv) \ 433
301 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
302 : 0 437 : 0)
303 438
304static 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 *
305SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
306{ 444{
307 HV *stash; 445 HV *stash;
308 MAGIC *mg; 446 MAGIC *mg;
309 447
310 if (SvROK (coro)) 448 if (SvROK (coro))
311 coro = SvRV (coro); 449 coro = SvRV (coro);
312 450
451 if (expect_false (SvTYPE (coro) != SVt_PVHV))
452 croak ("Coro::State object required");
453
313 stash = SvSTASH (coro); 454 stash = SvSTASH (coro);
314 if (stash != coro_stash && stash != coro_state_stash) 455 if (expect_false (stash != coro_stash && stash != coro_state_stash))
315 { 456 {
316 /* very slow, but rare, check */ 457 /* very slow, but rare, check */
317 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
318 croak ("Coro::State object required"); 459 croak ("Coro::State object required");
319 } 460 }
320 461
321 mg = CORO_MAGIC (coro); 462 mg = CORO_MAGIC_state (coro);
322 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
323} 464}
324 465
325#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
326 467
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
327/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
328static void 473static void
329get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
330{ 475{
331 MAGIC *mg = CORO_MAGIC (cv); 476 MAGIC *mg = CORO_MAGIC_cv (cv);
332 AV *av; 477 AV *av;
333 478
334 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
335 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
336 else 481 else
337 { 482 {
338#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
339 /* this is probably cleaner, but also slower? */ 484 /* this is probably cleaner? but also slower! */
485 /* in practise, it seems to be less stable */
340 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
341 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
342 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
343 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
344#else 490#else
345 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
346#endif 492#endif
347 } 493 }
348} 494}
349 495
350static void 496static void
351put_padlist (pTHX_ CV *cv) 497put_padlist (pTHX_ CV *cv)
352{ 498{
353 MAGIC *mg = CORO_MAGIC (cv); 499 MAGIC *mg = CORO_MAGIC_cv (cv);
354 AV *av; 500 AV *av;
355 501
356 if (!mg) 502 if (expect_false (!mg))
357 { 503 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
358 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
359 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
360 mg->mg_virtual = &vtbl_coro;
361 mg->mg_obj = (SV *)newAV ();
362 }
363 504
364 av = (AV *)mg->mg_obj; 505 av = (AV *)mg->mg_obj;
365 506
366 if (AvFILLp (av) >= AvMAX (av)) 507 if (expect_false (AvFILLp (av) >= AvMAX (av)))
367 av_extend (av, AvMAX (av) + 1); 508 av_extend (av, AvMAX (av) + 1);
368 509
369 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 510 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
370} 511}
371 512
372/** load & save, init *******************************************************/ 513/** load & save, init *******************************************************/
373 514
374#define SB do {
375#define SE } while (0)
376
377#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
378
379static void 515static void
380load_perl (pTHX_ Coro__State c) 516load_perl (pTHX_ Coro__State c)
381{ 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
382#define VAR(name,type) PL_ ## name = c->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
383# include "state.h" 530 # include "state.h"
384#undef VAR 531 #undef VAR
385
386 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
387 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
388 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
389 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
390
391 if (c->irssv)
392 {
393 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
394 {
395 SvREFCNT_dec (c->irssv);
396 c->irssv = 0;
397 }
398 else
399 {
400 REPLACE_SV (PL_rs, c->irssv);
401 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
402 sv_setsv (c->irssv_sv, PL_rs);
403 }
404 }
405 532
406 { 533 {
407 dSP; 534 dSP;
535
408 CV *cv; 536 CV *cv;
409 537
410 /* now do the ugly restore mess */ 538 /* now do the ugly restore mess */
411 while ((cv = (CV *)POPs)) 539 while (expect_true (cv = (CV *)POPs))
412 { 540 {
413 put_padlist (aTHX_ cv); /* mark this padlist as available */ 541 put_padlist (aTHX_ cv); /* mark this padlist as available */
414 CvDEPTH (cv) = PTR2IV (POPs); 542 CvDEPTH (cv) = PTR2IV (POPs);
415 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
416 } 544 }
417 545
418 PUTBACK; 546 PUTBACK;
419 } 547 }
548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
420} 551}
421 552
422static void 553static void
423save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
424{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
425 { 559 {
426 dSP; 560 dSP;
427 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
428 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
429 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
435 569
436 XPUSHs (Nullsv); 570 XPUSHs (Nullsv);
437 /* this loop was inspired by pp_caller */ 571 /* this loop was inspired by pp_caller */
438 for (;;) 572 for (;;)
439 { 573 {
440 while (cxix >= 0) 574 while (expect_true (cxix >= 0))
441 { 575 {
442 PERL_CONTEXT *cx = &ccstk[cxix--]; 576 PERL_CONTEXT *cx = &ccstk[cxix--];
443 577
444 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 578 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
445 { 579 {
446 CV *cv = cx->blk_sub.cv; 580 CV *cv = cx->blk_sub.cv;
447 581
448 if (CvDEPTH (cv)) 582 if (expect_true (CvDEPTH (cv)))
449 { 583 {
450 EXTEND (SP, 3); 584 EXTEND (SP, 3);
451 PUSHs ((SV *)CvPADLIST (cv)); 585 PUSHs ((SV *)CvPADLIST (cv));
452 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 586 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
453 PUSHs ((SV *)cv); 587 PUSHs ((SV *)cv);
454 588
455 CvDEPTH (cv) = 0; 589 CvDEPTH (cv) = 0;
456 get_padlist (aTHX_ cv); 590 get_padlist (aTHX_ cv);
457 } 591 }
458 } 592 }
459 } 593 }
460 594
461 if (top_si->si_type == PERLSI_MAIN) 595 if (expect_true (top_si->si_type == PERLSI_MAIN))
462 break; 596 break;
463 597
464 top_si = top_si->si_prev; 598 top_si = top_si->si_prev;
465 ccstk = top_si->si_cxstack; 599 ccstk = top_si->si_cxstack;
466 cxix = top_si->si_cxix; 600 cxix = top_si->si_cxix;
467 } 601 }
468 602
469 PUTBACK; 603 PUTBACK;
470 } 604 }
471 605
472 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 606 /* allocate some space on the context stack for our purposes */
473 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 607 /* we manually unroll here, as usually 2 slots is enough */
474 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 608 if (SLOT_COUNT >= 1) CXINC;
475 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 609 if (SLOT_COUNT >= 2) CXINC;
476 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 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 */
477 617
618 c->mainstack = PL_mainstack;
619
620 {
621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
622
623 slot->defav = GvAV (PL_defgv);
624 slot->defsv = DEFSV;
625 slot->errsv = ERRSV;
626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
628
478#define VAR(name,type)c->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
479# include "state.h" 630 # include "state.h"
480#undef VAR 631 #undef VAR
632 }
481} 633}
482 634
483/* 635/*
484 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
485 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
486 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
487 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
488 */ 640 */
489#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
490# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
491#else 643#else
492static void 644static void
493coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
494{ 646{
495 PL_curstackinfo = new_stackinfo(64, 6); 647 PL_curstackinfo = new_stackinfo(32, 8);
496 PL_curstackinfo->si_type = PERLSI_MAIN; 648 PL_curstackinfo->si_type = PERLSI_MAIN;
497 PL_curstack = PL_curstackinfo->si_stack; 649 PL_curstack = PL_curstackinfo->si_stack;
498 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
499 651
500 PL_stack_base = AvARRAY(PL_curstack); 652 PL_stack_base = AvARRAY(PL_curstack);
501 PL_stack_sp = PL_stack_base; 653 PL_stack_sp = PL_stack_base;
502 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 654 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
503 655
504 New(50,PL_tmps_stack,64,SV*); 656 New(50,PL_tmps_stack,32,SV*);
505 PL_tmps_floor = -1; 657 PL_tmps_floor = -1;
506 PL_tmps_ix = -1; 658 PL_tmps_ix = -1;
507 PL_tmps_max = 64; 659 PL_tmps_max = 32;
508 660
509 New(54,PL_markstack,16,I32); 661 New(54,PL_markstack,16,I32);
510 PL_markstack_ptr = PL_markstack; 662 PL_markstack_ptr = PL_markstack;
511 PL_markstack_max = PL_markstack + 16; 663 PL_markstack_max = PL_markstack + 16;
512 664
513#ifdef SET_MARK_OFFSET 665#ifdef SET_MARK_OFFSET
514 SET_MARK_OFFSET; 666 SET_MARK_OFFSET;
515#endif 667#endif
516 668
517 New(54,PL_scopestack,16,I32); 669 New(54,PL_scopestack,8,I32);
518 PL_scopestack_ix = 0; 670 PL_scopestack_ix = 0;
519 PL_scopestack_max = 16; 671 PL_scopestack_max = 8;
520 672
521 New(54,PL_savestack,64,ANY); 673 New(54,PL_savestack,24,ANY);
522 PL_savestack_ix = 0; 674 PL_savestack_ix = 0;
523 PL_savestack_max = 64; 675 PL_savestack_max = 24;
524 676
525#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
526 New(54,PL_retstack,4,OP*); 678 New(54,PL_retstack,4,OP*);
527 PL_retstack_ix = 0; 679 PL_retstack_ix = 0;
528 PL_retstack_max = 4; 680 PL_retstack_max = 4;
529#endif 681#endif
530} 682}
… …
532 684
533/* 685/*
534 * destroy the stacks, the callchain etc... 686 * destroy the stacks, the callchain etc...
535 */ 687 */
536static void 688static void
537coro_destroy_stacks (pTHX) 689coro_destruct_stacks (pTHX)
538{ 690{
539 if (!IN_DESTRUCT)
540 {
541 /* restore all saved variables and stuff */
542 LEAVE_SCOPE (0);
543 assert (PL_tmps_floor == -1);
544
545 /* free all temporaries */
546 FREETMPS;
547 assert (PL_tmps_ix == -1);
548
549 /* unwind all extra stacks */
550 POPSTACK_TO (PL_mainstack);
551
552 /* unwind main stack */
553 dounwind (-1);
554 }
555
556 while (PL_curstackinfo->si_next) 691 while (PL_curstackinfo->si_next)
557 PL_curstackinfo = PL_curstackinfo->si_next; 692 PL_curstackinfo = PL_curstackinfo->si_next;
558 693
559 while (PL_curstackinfo) 694 while (PL_curstackinfo)
560 { 695 {
… …
570 705
571 Safefree (PL_tmps_stack); 706 Safefree (PL_tmps_stack);
572 Safefree (PL_markstack); 707 Safefree (PL_markstack);
573 Safefree (PL_scopestack); 708 Safefree (PL_scopestack);
574 Safefree (PL_savestack); 709 Safefree (PL_savestack);
575#if !PERL_VERSION_ATLEAST (5,9,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
576 Safefree (PL_retstack); 711 Safefree (PL_retstack);
577#endif 712#endif
578} 713}
579 714
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);
723
580static size_t 724static size_t
581coro_rss (struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
582{ 726{
583 size_t rss = sizeof (coro); 727 size_t rss = sizeof (*coro);
584 728
585 if (coro->mainstack) 729 if (coro->mainstack)
586 { 730 {
587 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
588 { 732 {
589 #define VAR(name,type)coro->name = PL_ ## name; 733 #define SYM(sym) PL_ ## sym
590 # include "state.h" 734 CORO_RSS;
591 #undef VAR 735 #undef SYM
592 } 736 }
593 737 else
594 rss += sizeof (coro->curstackinfo); 738 {
595 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 739 #define SYM(sym) coro->slot->sym
596 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
597 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 741 #undef SYM
598 rss += coro->tmps_max * sizeof (SV *); 742 }
599 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
600 rss += coro->scopestack_max * sizeof (I32);
601 rss += coro->savestack_max * sizeof (ANY);
602
603#if !PERL_VERSION_ATLEAST (5,9,0)
604 rss += coro->retstack_max * sizeof (OP *);
605#endif
606 } 743 }
607 744
608 return rss; 745 return rss;
609} 746}
610 747
611/** coroutine stack handling ************************************************/ 748/** coroutine stack handling ************************************************/
612 749
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 */
613static 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 */
614setup_coro (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
615{ 863{
616 /* 864 /*
617 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
618 */ 866 */
619 coro_init_stacks (aTHX); 867 coro_init_stacks (aTHX);
620 868
621 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
622 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
623 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
624 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
625 PL_curpm = 0; 876 PL_curpm = 0;
877 PL_curpad = 0;
626 PL_localizing = 0; 878 PL_localizing = 0;
627 PL_dirty = 0; 879 PL_dirty = 0;
628 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);
889
890 GvSV (PL_defgv) = newSV (0);
891 GvAV (PL_defgv) = coro->args; coro->args = 0;
892 GvSV (PL_errgv) = newSV (0);
893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
895 PL_rs = newSVsv (GvSV (irsgv));
896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
629 897
630 { 898 {
631 dSP; 899 dSP;
632 LOGOP myop; 900 UNOP myop;
633 901
634 SvREFCNT_dec (GvAV (PL_defgv));
635 GvAV (PL_defgv) = coro->args; coro->args = 0;
636
637 Zero (&myop, 1, LOGOP); 902 Zero (&myop, 1, UNOP);
638 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
639 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
640 906
641 PUSHMARK (SP); 907 PUSHMARK (SP);
642 XPUSHs (av_shift (GvAV (PL_defgv))); 908 PUSHs ((SV *)coro->startcv);
643 PUTBACK; 909 PUTBACK;
644 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
645 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
646 SPAGAIN;
647 } 912 }
648 913
649 ENTER; /* necessary e.g. for dounwind */ 914 /* this newly created coroutine might be run on an existing cctx which most
650} 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 */
651 919
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
652static void 932static void
933coro_destruct (pTHX_ struct coro *coro)
934{
935 if (!IN_DESTRUCT)
936 {
937 /* restore all saved variables and stuff */
938 LEAVE_SCOPE (0);
939 assert (PL_tmps_floor == -1);
940
941 /* free all temporaries */
942 FREETMPS;
943 assert (PL_tmps_ix == -1);
944
945 /* unwind all extra stacks */
946 POPSTACK_TO (PL_mainstack);
947
948 /* unwind main stack */
949 dounwind (-1);
950 }
951
952 SvREFCNT_dec (GvSV (PL_defgv));
953 SvREFCNT_dec (GvAV (PL_defgv));
954 SvREFCNT_dec (GvSV (PL_errgv));
955 SvREFCNT_dec (PL_defoutgv);
956 SvREFCNT_dec (PL_rs);
957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
959
960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962
963 SvREFCNT_dec (coro->saved_deffh);
964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
967
968 coro_destruct_stacks (aTHX);
969}
970
971INLINE void
653free_coro_mortal (pTHX) 972free_coro_mortal (pTHX)
654{ 973{
655 if (coro_mortal) 974 if (expect_true (coro_mortal))
656 { 975 {
657 SvREFCNT_dec (coro_mortal); 976 SvREFCNT_dec (coro_mortal);
658 coro_mortal = 0; 977 coro_mortal = 0;
659 } 978 }
660} 979}
… …
662static int 981static int
663runops_trace (pTHX) 982runops_trace (pTHX)
664{ 983{
665 COP *oldcop = 0; 984 COP *oldcop = 0;
666 int oldcxix = -2; 985 int oldcxix = -2;
667 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
668 coro_cctx *cctx = coro->cctx;
669 986
670 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
671 { 988 {
672 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
673 990
674 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 991 if (cctx_current->flags & CC_TRACE_ALL)
675 { 992 {
676 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
677 SV **bot, **top;
678 AV *av = newAV (); /* return values */
679 SV **cb;
680 runops_proc_t old_runops = PL_runops;
681 dSP;
682 ENTER;
683 SAVETMPS;
684 EXTEND (SP, 3);
685 PL_runops = RUNOPS_DEFAULT;
686
687 GV *gv = CvGV (cx->blk_sub.cv);
688 SV *fullname = sv_2mortal (newSV (0));
689 if (isGV (gv))
690 gv_efullname3 (fullname, gv, 0);
691
692 bot = PL_stack_base + cx->blk_oldsp + 1;
693 top = cx->blk_gimme == G_ARRAY ? SP + 1
694 : cx->blk_gimme == G_SCALAR ? bot + 1
695 : bot;
696
697 while (bot < top)
698 av_push (av, SvREFCNT_inc (*bot++));
699
700 PUSHMARK (SP);
701 PUSHs (&PL_sv_no);
702 PUSHs (fullname);
703 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
704 PUTBACK;
705 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
706 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
707 SPAGAIN;
708
709 FREETMPS;
710 LEAVE;
711 PL_runops = old_runops;
712 }
713
714 if (oldcop != PL_curcop)
715 {
716 oldcop = PL_curcop;
717
718 if (PL_curcop != &PL_compiling)
719 { 994 {
995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
996 SV **bot, **top;
997 AV *av = newAV (); /* return values */
720 SV **cb; 998 SV **cb;
721 runops_proc_t old_runops = PL_runops;
722 dSP; 999 dSP;
1000
1001 GV *gv = CvGV (cx->blk_sub.cv);
1002 SV *fullname = sv_2mortal (newSV (0));
1003 if (isGV (gv))
1004 gv_efullname3 (fullname, gv, 0);
1005
1006 bot = PL_stack_base + cx->blk_oldsp + 1;
1007 top = cx->blk_gimme == G_ARRAY ? SP + 1
1008 : cx->blk_gimme == G_SCALAR ? bot + 1
1009 : bot;
1010
1011 av_extend (av, top - bot);
1012 while (bot < top)
1013 av_push (av, SvREFCNT_inc_NN (*bot++));
1014
1015 PL_runops = RUNOPS_DEFAULT;
723 ENTER; 1016 ENTER;
724 SAVETMPS; 1017 SAVETMPS;
725 EXTEND (SP, 3); 1018 EXTEND (SP, 3);
726 PL_runops = RUNOPS_DEFAULT; 1019 PUSHMARK (SP);
1020 PUSHs (&PL_sv_no);
1021 PUSHs (fullname);
1022 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1023 PUTBACK;
1024 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1025 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1026 SPAGAIN;
1027 FREETMPS;
1028 LEAVE;
1029 PL_runops = runops_trace;
1030 }
727 1031
728 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1032 if (oldcop != PL_curcop)
1033 {
1034 oldcop = PL_curcop;
1035
1036 if (PL_curcop != &PL_compiling)
729 { 1037 {
730 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1038 SV **cb;
731 1039
732 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
733 { 1041 {
1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1043
1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1045 {
1046 dSP;
734 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
735 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
1049
736 if (isGV (gv)) 1050 if (isGV (gv))
737 gv_efullname3 (fullname, gv, 0); 1051 gv_efullname3 (fullname, gv, 0);
738 1052
1053 PL_runops = RUNOPS_DEFAULT;
1054 ENTER;
1055 SAVETMPS;
1056 EXTEND (SP, 3);
1057 PUSHMARK (SP);
1058 PUSHs (&PL_sv_yes);
1059 PUSHs (fullname);
1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1061 PUTBACK;
1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1064 SPAGAIN;
1065 FREETMPS;
1066 LEAVE;
1067 PL_runops = runops_trace;
1068 }
1069
1070 oldcxix = cxstack_ix;
1071 }
1072
1073 if (cctx_current->flags & CC_TRACE_LINE)
1074 {
1075 dSP;
1076
1077 PL_runops = RUNOPS_DEFAULT;
1078 ENTER;
1079 SAVETMPS;
1080 EXTEND (SP, 3);
1081 PL_runops = RUNOPS_DEFAULT;
739 PUSHMARK (SP); 1082 PUSHMARK (SP);
740 PUSHs (&PL_sv_yes); 1083 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
741 PUSHs (fullname); 1084 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
742 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
743 PUTBACK; 1085 PUTBACK;
744 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1086 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
745 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1087 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
746 SPAGAIN; 1088 SPAGAIN;
1089 FREETMPS;
1090 LEAVE;
1091 PL_runops = runops_trace;
747 } 1092 }
748
749 oldcxix = cxstack_ix;
750 } 1093 }
751
752 if (cctx->flags & CC_TRACE_LINE)
753 {
754 PUSHMARK (SP);
755 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
756 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
757 PUTBACK;
758 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
759 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
760 SPAGAIN;
761 }
762
763 FREETMPS;
764 LEAVE;
765 PL_runops = old_runops;
766 } 1094 }
767 } 1095 }
768 } 1096 }
769 1097
770 TAINT_NOT; 1098 TAINT_NOT;
771 return 0; 1099 return 0;
772} 1100}
773 1101
774/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static struct CoroSLF cctx_ssl_frame;
775/* _cctx_init should be careful, as it could be called at almost any time */ 1103
776/* 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 */
777static void NOINLINE 1119static void NOINLINE
778prepare_cctx (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
779{ 1121{
780 dSP;
781 LOGOP myop;
782
783 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
784 1123
785 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
786 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
787 1126
788 Zero (&myop, 1, LOGOP); 1127 /* we already must be executing an SLF op, there is no other valid way
789 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
790 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));
791 1131
792 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
793 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
794 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1134
795 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
796 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
797 PL_op = (OP *)&myop; 1137}
798 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1138
799 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);
800} 1144}
801 1145
802/* 1146/*
803 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
804 */ 1148 */
805static void 1149static void
806coro_run (void *arg) 1150cctx_run (void *arg)
807{ 1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
808 dTHX; 1158 dTHX;
809 1159
810 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1160 /* normally we would need to skip the entersub here */
811 UNLOCK; 1161 /* not doing so will re-execute it, which is exactly what we want */
812
813 /* we now skip the entersub that lead to transfer() */
814 PL_op = PL_op->op_next; 1162 /* PL_nop = PL_nop->op_next */
815 1163
816 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
817 prepare_cctx (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
818 1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
819 /* 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 */
820 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
821 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
822
823 /* 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 /*
824 * 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
825 * 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)
826 * 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
827 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
828 * 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.
829 */ 1186 */
830 PL_top_env = main_top_env; 1187 PL_top_env = main_top_env;
831 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 }
832} 1190}
833 1191
834static coro_cctx * 1192static coro_cctx *
835cctx_new () 1193cctx_new ()
836{ 1194{
837 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 ();
838 void *stack_start; 1224 void *stack_start;
839 size_t stack_size; 1225 size_t stack_size;
840 1226
841 ++cctx_count;
842
843 Newz (0, cctx, 1, coro_cctx);
844
845#if HAVE_MMAP 1227#if HAVE_MMAP
846
847 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;
848 /* mmap supposedly does allocate-on-write for us */ 1229 /* mmap supposedly does allocate-on-write for us */
849 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1230 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
850 1231
851 if (cctx->sptr != (void *)-1) 1232 if (cctx->sptr != (void *)-1)
852 { 1233 {
853# if CORO_STACKGUARD 1234 #if CORO_STACKGUARD
854 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1235 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
855# endif 1236 #endif
856 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1237 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
857 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1238 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
858 cctx->flags |= CC_MAPPED; 1239 cctx->flags |= CC_MAPPED;
859 } 1240 }
860 else 1241 else
861#endif 1242#endif
862 { 1243 {
863 cctx->ssize = coro_stacksize * (long)sizeof (long); 1244 cctx->ssize = cctx_stacksize * (long)sizeof (long);
864 New (0, cctx->sptr, coro_stacksize, long); 1245 New (0, cctx->sptr, cctx_stacksize, long);
865 1246
866 if (!cctx->sptr) 1247 if (!cctx->sptr)
867 { 1248 {
868 perror ("FATAL: unable to allocate stack for coroutine"); 1249 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
869 _exit (EXIT_FAILURE); 1250 _exit (EXIT_FAILURE);
870 } 1251 }
871 1252
872 stack_start = cctx->sptr; 1253 stack_start = cctx->sptr;
873 stack_size = cctx->ssize; 1254 stack_size = cctx->ssize;
874 } 1255 }
875 1256
876 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
877 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);
878 1262
879 return cctx; 1263 return cctx;
880} 1264}
881 1265
882static void 1266static void
883cctx_destroy (coro_cctx *cctx) 1267cctx_destroy (coro_cctx *cctx)
884{ 1268{
885 if (!cctx) 1269 if (!cctx)
886 return; 1270 return;
887 1271
1272 assert (cctx != cctx_current);//D temporary
1273
888 --cctx_count; 1274 --cctx_count;
1275 coro_destroy (&cctx->cctx);
889 1276
1277 /* coro_transfer creates new, empty cctx's */
1278 if (cctx->sptr)
1279 {
890#if CORO_USE_VALGRIND 1280 #if CORO_USE_VALGRIND
891 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1281 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
892#endif 1282 #endif
893 1283
894#if HAVE_MMAP 1284#if HAVE_MMAP
895 if (cctx->flags & CC_MAPPED) 1285 if (cctx->flags & CC_MAPPED)
896 munmap (cctx->sptr, cctx->ssize); 1286 munmap (cctx->sptr, cctx->ssize);
897 else 1287 else
898#endif 1288#endif
899 Safefree (cctx->sptr); 1289 Safefree (cctx->sptr);
1290 }
900 1291
901 Safefree (cctx); 1292 Safefree (cctx);
902} 1293}
1294
1295/* wether this cctx should be destructed */
1296#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
903 1297
904static coro_cctx * 1298static coro_cctx *
905cctx_get (pTHX) 1299cctx_get (pTHX)
906{ 1300{
907 while (cctx_first) 1301 while (expect_true (cctx_first))
908 { 1302 {
909 coro_cctx *cctx = cctx_first; 1303 coro_cctx *cctx = cctx_first;
910 cctx_first = cctx->next; 1304 cctx_first = cctx->next;
911 --cctx_idle; 1305 --cctx_idle;
912 1306
913 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1307 if (expect_true (!CCTX_EXPIRED (cctx)))
914 return cctx; 1308 return cctx;
915 1309
916 cctx_destroy (cctx); 1310 cctx_destroy (cctx);
917 } 1311 }
918 1312
919 return cctx_new (); 1313 return cctx_new_run ();
920} 1314}
921 1315
922static void 1316static void
923cctx_put (coro_cctx *cctx) 1317cctx_put (coro_cctx *cctx)
924{ 1318{
1319 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1320
925 /* free another cctx if overlimit */ 1321 /* free another cctx if overlimit */
926 if (cctx_idle >= MAX_IDLE_CCTX) 1322 if (expect_false (cctx_idle >= cctx_max_idle))
927 { 1323 {
928 coro_cctx *first = cctx_first; 1324 coro_cctx *first = cctx_first;
929 cctx_first = first->next; 1325 cctx_first = first->next;
930 --cctx_idle; 1326 --cctx_idle;
931 1327
… …
937 cctx_first = cctx; 1333 cctx_first = cctx;
938} 1334}
939 1335
940/** coroutine switching *****************************************************/ 1336/** coroutine switching *****************************************************/
941 1337
942static void NOINLINE 1338static void
943transfer_check (pTHX_ struct coro *prev, struct coro *next) 1339transfer_check (pTHX_ struct coro *prev, struct coro *next)
944{ 1340{
945 if (prev != next) 1341 /* TODO: throwing up here is considered harmful */
1342
1343 if (expect_true (prev != next))
946 { 1344 {
947 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1345 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
948 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
949 1347
950 if (next->flags & CF_RUNNING) 1348 if (expect_false (next->flags & CF_RUNNING))
951 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
952 1350
953 if (next->flags & CF_DESTROYED) 1351 if (expect_false (next->flags & CF_DESTROYED))
954 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1352 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
955 1353
1354#if !PERL_VERSION_ATLEAST (5,10,0)
956 if (PL_lex_state != LEX_NOTPARSING) 1355 if (expect_false (PL_lex_state != LEX_NOTPARSING))
957 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
958 } 1358 }
959} 1359}
960 1360
961/* always use the TRANSFER macro */ 1361/* always use the TRANSFER macro */
962static void NOINLINE 1362static void NOINLINE /* noinline so we have a fixed stackframe */
963transfer (pTHX_ struct coro *prev, struct coro *next) 1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
964{ 1364{
965 dSTACKLEVEL; 1365 dSTACKLEVEL;
966 1366
967 /* sometimes transfer is only called to set idle_sp */ 1367 /* sometimes transfer is only called to set idle_sp */
968 if (!next) 1368 if (expect_false (!prev))
969 { 1369 {
970 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1370 cctx_current->idle_sp = STACKLEVEL;
971 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 */
972 }
973 else if (prev != next)
974 { 1372 }
1373 else if (expect_true (prev != next))
1374 {
975 coro_cctx *prev__cctx; 1375 coro_cctx *cctx_prev;
976 1376
977 if (prev->flags & CF_NEW) 1377 if (expect_false (prev->flags & CF_NEW))
978 { 1378 {
979 /* create a new empty context */ 1379 /* create a new empty/source context */
980 Newz (0, prev->cctx, 1, coro_cctx);
981 prev->flags &= ~CF_NEW; 1380 prev->flags &= ~CF_NEW;
982 prev->flags |= CF_RUNNING; 1381 prev->flags |= CF_RUNNING;
983 } 1382 }
984 1383
985 prev->flags &= ~CF_RUNNING; 1384 prev->flags &= ~CF_RUNNING;
986 next->flags |= CF_RUNNING; 1385 next->flags |= CF_RUNNING;
987 1386
988 LOCK; 1387 /* first get rid of the old state */
1388 save_perl (aTHX_ prev);
989 1389
990 if (next->flags & CF_NEW) 1390 if (expect_false (next->flags & CF_NEW))
991 { 1391 {
992 /* need to start coroutine */ 1392 /* need to start coroutine */
993 next->flags &= ~CF_NEW; 1393 next->flags &= ~CF_NEW;
994 /* first get rid of the old state */
995 save_perl (aTHX_ prev);
996 /* setup coroutine call */ 1394 /* setup coroutine call */
997 setup_coro (aTHX_ next); 1395 coro_setup (aTHX_ next);
998 } 1396 }
999 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 ))
1000 { 1408 {
1001 /* coroutine already started */ 1409 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1002 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));
1003 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);
1004 } 1419 }
1420 else
1421 prev->cctx = cctx_current;
1005 1422
1006 prev__cctx = prev->cctx; 1423 ++next->usecount;
1007 1424
1008 /* possibly "free" the cctx */ 1425 cctx_prev = cctx_current;
1009 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))
1010 { 1431 {
1011 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1432 cctx_prev->top_env = PL_top_env;
1012 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1433 PL_top_env = cctx_current->top_env;
1013 1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1014 prev->cctx = 0;
1015
1016 cctx_put (prev__cctx);
1017 } 1435 }
1018 1436
1019 if (!next->cctx) 1437 transfer_tail (aTHX);
1020 next->cctx = cctx_get (aTHX);
1021
1022 if (prev__cctx != next->cctx)
1023 {
1024 prev__cctx->top_env = PL_top_env;
1025 PL_top_env = next->cctx->top_env;
1026 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1027 }
1028
1029 free_coro_mortal (aTHX);
1030 UNLOCK;
1031 } 1438 }
1032} 1439}
1033 1440
1034struct transfer_args
1035{
1036 struct coro *prev, *next;
1037};
1038
1039#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1441#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1040#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1442#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1041 1443
1042/** high level stuff ********************************************************/ 1444/** high level stuff ********************************************************/
1043 1445
1044static int 1446static int
1045coro_state_destroy (pTHX_ struct coro *coro) 1447coro_state_destroy (pTHX_ struct coro *coro)
1046{ 1448{
1047 if (coro->flags & CF_DESTROYED) 1449 if (coro->flags & CF_DESTROYED)
1048 return 0; 1450 return 0;
1451
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro);
1049 1454
1050 coro->flags |= CF_DESTROYED; 1455 coro->flags |= CF_DESTROYED;
1051 1456
1052 if (coro->flags & CF_READY) 1457 if (coro->flags & CF_READY)
1053 { 1458 {
1054 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1459 /* reduce nready, as destroying a ready coro effectively unreadies it */
1055 /* alternative: look through all ready queues and remove the coro */ 1460 /* alternative: look through all ready queues and remove the coro */
1056 LOCK;
1057 --coro_nready; 1461 --coro_nready;
1058 UNLOCK;
1059 } 1462 }
1060 else 1463 else
1061 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 */
1062 1465
1063 if (coro->mainstack && coro->mainstack != main_mainstack) 1466 if (coro->mainstack && coro->mainstack != main_mainstack)
1064 { 1467 {
1065 struct coro temp; 1468 struct coro temp;
1066 1469
1067 assert (!(coro->flags & CF_RUNNING)); 1470 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1068
1069 Zero (&temp, 1, struct coro);
1070 temp.save = CORO_SAVE_ALL;
1071
1072 if (coro->flags & CF_RUNNING)
1073 croak ("FATAL: tried to destroy currently running coroutine");
1074 1471
1075 save_perl (aTHX_ &temp); 1472 save_perl (aTHX_ &temp);
1076 load_perl (aTHX_ coro); 1473 load_perl (aTHX_ coro);
1077 1474
1078 coro_destroy_stacks (aTHX); 1475 coro_destruct (aTHX_ coro);
1079 1476
1080 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1477 load_perl (aTHX_ &temp);
1081 1478
1082 coro->mainstack = 0; 1479 coro->slot = 0;
1083 } 1480 }
1084 1481
1085 cctx_destroy (coro->cctx); 1482 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv);
1086 SvREFCNT_dec (coro->args); 1484 SvREFCNT_dec (coro->args);
1485 SvREFCNT_dec (CORO_THROW);
1087 1486
1088 if (coro->next) coro->next->prev = coro->prev; 1487 if (coro->next) coro->next->prev = coro->prev;
1089 if (coro->prev) coro->prev->next = coro->next; 1488 if (coro->prev) coro->prev->next = coro->next;
1090 if (coro == coro_first) coro_first = coro->next; 1489 if (coro == coro_first) coro_first = coro->next;
1091 1490
… …
1129# define MGf_DUP 0 1528# define MGf_DUP 0
1130#endif 1529#endif
1131}; 1530};
1132 1531
1133static void 1532static void
1134prepare_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)
1135{ 1534{
1136 ta->prev = SvSTATE (prev_sv); 1535 ta->prev = SvSTATE (prev_sv);
1137 ta->next = SvSTATE (next_sv); 1536 ta->next = SvSTATE (next_sv);
1138 TRANSFER_CHECK (*ta); 1537 TRANSFER_CHECK (*ta);
1139} 1538}
1140 1539
1141static void 1540static void
1142api_transfer (SV *prev_sv, SV *next_sv) 1541api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1143{ 1542{
1144 dTHX;
1145 struct transfer_args ta; 1543 struct coro_transfer_args ta;
1146 1544
1147 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1148 TRANSFER (ta); 1546 TRANSFER (ta, 1);
1149} 1547}
1150 1548
1151static int 1549/*****************************************************************************/
1152api_save (SV *coro_sv, int new_save) 1550/* gensub: simple closure generation utility */
1153{
1154 dTHX;
1155 struct coro *coro = SvSTATE (coro_sv);
1156 int old_save = coro->save;
1157 1551
1158 if (new_save >= 0) 1552#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1159 coro->save = new_save;
1160 1553
1161 return old_save; 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);
1162} 1570}
1163 1571
1164/** Coro ********************************************************************/ 1572/** Coro ********************************************************************/
1165 1573
1166static void 1574INLINE void
1167coro_enq (pTHX_ SV *coro_sv) 1575coro_enq (pTHX_ struct coro *coro)
1168{ 1576{
1169 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));
1170} 1578}
1171 1579
1172static SV * 1580INLINE SV *
1173coro_deq (pTHX_ int min_prio) 1581coro_deq (pTHX)
1174{ 1582{
1175 int prio = PRIO_MAX - PRIO_MIN; 1583 int prio;
1176 1584
1177 min_prio -= PRIO_MIN;
1178 if (min_prio < 0)
1179 min_prio = 0;
1180
1181 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1182 if (AvFILLp (coro_ready [prio]) >= 0) 1586 if (AvFILLp (coro_ready [prio]) >= 0)
1183 return av_shift (coro_ready [prio]); 1587 return av_shift (coro_ready [prio]);
1184 1588
1185 return 0; 1589 return 0;
1186} 1590}
1187 1591
1188static int 1592static int
1189api_ready (SV *coro_sv) 1593api_ready (pTHX_ SV *coro_sv)
1190{ 1594{
1191 dTHX;
1192 struct coro *coro; 1595 struct coro *coro;
1193 1596 SV *sv_hook;
1194 if (SvROK (coro_sv)) 1597 void (*xs_hook)(void);
1195 coro_sv = SvRV (coro_sv);
1196 1598
1197 coro = SvSTATE (coro_sv); 1599 coro = SvSTATE (coro_sv);
1198 1600
1199 if (coro->flags & CF_READY) 1601 if (coro->flags & CF_READY)
1200 return 0; 1602 return 0;
1201 1603
1202 coro->flags |= CF_READY; 1604 coro->flags |= CF_READY;
1203 1605
1204 LOCK; 1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1205 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1608
1609 coro_enq (aTHX_ coro);
1206 ++coro_nready; 1610 ++coro_nready;
1207 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 ();
1208 1629
1209 return 1; 1630 return 1;
1210} 1631}
1211 1632
1212static int 1633static int
1213api_is_ready (SV *coro_sv) 1634api_is_ready (pTHX_ SV *coro_sv)
1214{ 1635{
1215 dTHX;
1216 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1636 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1217} 1637}
1218 1638
1639/* expects to own a reference to next->hv */
1640INLINE void
1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1642{
1643 SV *prev_sv = SvRV (coro_current);
1644
1645 ta->prev = SvSTATE_hv (prev_sv);
1646 ta->next = next;
1647
1648 TRANSFER_CHECK (*ta);
1649
1650 SvRV_set (coro_current, (SV *)next->hv);
1651
1652 free_coro_mortal (aTHX);
1653 coro_mortal = prev_sv;
1654}
1655
1219static void 1656static void
1220prepare_schedule (pTHX_ struct transfer_args *ta) 1657prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1221{ 1658{
1222 SV *prev_sv, *next_sv;
1223
1224 for (;;) 1659 for (;;)
1225 { 1660 {
1226 LOCK;
1227 next_sv = coro_deq (aTHX_ PRIO_MIN); 1661 SV *next_sv = coro_deq (aTHX);
1228 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 {
1229 /* nothing to schedule: call the idle handler */ 1681 /* nothing to schedule: call the idle handler */
1230 if (!next_sv) 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
1708prepare_cede (pTHX_ struct coro_transfer_args *ta)
1709{
1710 api_ready (aTHX_ coro_current);
1711 prepare_schedule (aTHX_ ta);
1712}
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
1747static int
1748api_cede (pTHX)
1749{
1750 struct coro_transfer_args ta;
1751
1752 prepare_cede (aTHX_ &ta);
1753
1754 if (expect_true (ta.prev != ta.next))
1755 {
1756 TRANSFER (ta, 1);
1757 return 1;
1758 }
1759 else
1760 return 0;
1761}
1762
1763static int
1764api_cede_notself (pTHX)
1765{
1766 if (coro_nready)
1767 {
1768 struct coro_transfer_args ta;
1769
1770 prepare_cede_notself (aTHX_ &ta);
1771 TRANSFER (ta, 1);
1772 return 1;
1773 }
1774 else
1775 return 0;
1776}
1777
1778static void
1779api_trace (pTHX_ SV *coro_sv, int flags)
1780{
1781 struct coro *coro = SvSTATE (coro_sv);
1782
1783 if (coro->flags & CF_RUNNING)
1784 croak ("cannot enable tracing on a running coroutine, caught");
1785
1786 if (flags & CC_TRACE)
1787 {
1788 if (!coro->cctx)
1789 coro->cctx = cctx_new_run ();
1790 else if (!(coro->cctx->flags & CC_TRACE))
1791 croak ("cannot enable tracing on coroutine with custom stack, caught");
1792
1793 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1794 }
1795 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1796 {
1797 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1798
1799 if (coro->flags & CF_RUNNING)
1800 PL_runops = RUNOPS_DEFAULT;
1801 else
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;
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 }
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 /*AvARRAY (av) = ary;*/
2376 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2377 AvMAX (av) = 1;
2378 AvFILLp (av) = 0;
2379 ary [0] = newSViv (count);
2380
2381 return newRV_noinc ((SV *)av);
2382}
2383
2384/* semaphore */
2385
2386static void
2387coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2388{
2389 SV *count_sv = AvARRAY (av)[0];
2390 IV count = SvIVX (count_sv);
2391
2392 count += adjust;
2393 SvIVX (count_sv) = count;
2394
2395 /* now wake up as many waiters as are expected to lock */
2396 while (count > 0 && AvFILLp (av) > 0)
2397 {
2398 SV *cb;
2399
2400 /* swap first two elements so we can shift a waiter */
2401 AvARRAY (av)[0] = AvARRAY (av)[1];
2402 AvARRAY (av)[1] = count_sv;
2403 cb = av_shift (av);
2404
2405 if (SvOBJECT (cb))
2406 {
2407 api_ready (aTHX_ cb);
2408 --count;
2409 }
2410 else if (SvTYPE (cb) == SVt_PVCV)
1231 { 2411 {
1232 dSP; 2412 dSP;
1233 UNLOCK;
1234
1235 ENTER;
1236 SAVETMPS;
1237
1238 PUSHMARK (SP); 2413 PUSHMARK (SP);
2414 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1239 PUTBACK; 2415 PUTBACK;
1240 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 2416 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1241
1242 FREETMPS;
1243 LEAVE;
1244 continue;
1245 } 2417 }
1246 2418
1247 ta->next = SvSTATE (next_sv); 2419 SvREFCNT_dec (cb);
2420 }
2421}
1248 2422
1249 /* cannot transfer to destroyed coros, skip and look for next */ 2423static void
1250 if (ta->next->flags & CF_DESTROYED) 2424coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2425{
2426 /* call $sem->adjust (0) to possibly wake up some other waiters */
2427 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2428}
2429
2430static int
2431slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2432{
2433 AV *av = (AV *)frame->data;
2434 SV *count_sv = AvARRAY (av)[0];
2435
2436 /* if we are about to throw, don't actually acquire the lock, just throw */
2437 if (CORO_THROW)
2438 return 0;
2439 else if (SvIVX (count_sv) > 0)
2440 {
2441 SvSTATE_current->on_destroy = 0;
2442
2443 if (acquire)
2444 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2445 else
2446 coro_semaphore_adjust (aTHX_ av, 0);
2447
2448 return 0;
2449 }
2450 else
2451 {
2452 int i;
2453 /* if we were woken up but can't down, we look through the whole */
2454 /* waiters list and only add us if we aren't in there already */
2455 /* this avoids some degenerate memory usage cases */
2456
2457 for (i = 1; i <= AvFILLp (av); ++i)
2458 if (AvARRAY (av)[i] == SvRV (coro_current))
2459 return 1;
2460
2461 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2462 return 1;
2463 }
2464}
2465
2466static int
2467slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2468{
2469 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2470}
2471
2472static int
2473slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2474{
2475 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2476}
2477
2478static void
2479slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 AV *av = (AV *)SvRV (arg [0]);
2482
2483 if (SvIVX (AvARRAY (av)[0]) > 0)
2484 {
2485 frame->data = (void *)av;
2486 frame->prepare = prepare_nop;
2487 }
2488 else
2489 {
2490 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2491
2492 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2493 frame->prepare = prepare_schedule;
2494
2495 /* to avoid race conditions when a woken-up coro gets terminated */
2496 /* we arrange for a temporary on_destroy that calls adjust (0) */
2497 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2498 }
2499}
2500
2501static void
2502slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2503{
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_down;
2506}
2507
2508static void
2509slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2510{
2511 if (items >= 2)
2512 {
2513 /* callback form */
2514 AV *av = (AV *)SvRV (arg [0]);
2515 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2516
2517 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2518
2519 if (SvIVX (AvARRAY (av)[0]) > 0)
2520 coro_semaphore_adjust (aTHX_ av, 0);
2521
2522 frame->prepare = prepare_nop;
2523 frame->check = slf_check_nop;
2524 }
2525 else
2526 {
2527 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2528 frame->check = slf_check_semaphore_wait;
2529 }
2530}
2531
2532/* signal */
2533
2534static void
2535coro_signal_wake (pTHX_ AV *av, int count)
2536{
2537 SvIVX (AvARRAY (av)[0]) = 0;
2538
2539 /* now signal count waiters */
2540 while (count > 0 && AvFILLp (av) > 0)
2541 {
2542 SV *cb;
2543
2544 /* swap first two elements so we can shift a waiter */
2545 cb = AvARRAY (av)[0];
2546 AvARRAY (av)[0] = AvARRAY (av)[1];
2547 AvARRAY (av)[1] = cb;
2548
2549 cb = av_shift (av);
2550
2551 api_ready (aTHX_ cb);
2552 sv_setiv (cb, 0); /* signal waiter */
2553 SvREFCNT_dec (cb);
2554
2555 --count;
2556 }
2557}
2558
2559static int
2560slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2561{
2562 /* if we are about to throw, also stop waiting */
2563 return SvROK ((SV *)frame->data) && !CORO_THROW;
2564}
2565
2566static void
2567slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2568{
2569 AV *av = (AV *)SvRV (arg [0]);
2570
2571 if (SvIVX (AvARRAY (av)[0]))
2572 {
2573 SvIVX (AvARRAY (av)[0]) = 0;
2574 frame->prepare = prepare_nop;
2575 frame->check = slf_check_nop;
2576 }
2577 else
2578 {
2579 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2580
2581 av_push (av, waiter);
2582
2583 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2584 frame->prepare = prepare_schedule;
2585 frame->check = slf_check_signal_wait;
2586 }
2587}
2588
2589/*****************************************************************************/
2590/* Coro::AIO */
2591
2592#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2593
2594/* helper storage struct */
2595struct io_state
2596{
2597 int errorno;
2598 I32 laststype; /* U16 in 5.10.0 */
2599 int laststatval;
2600 Stat_t statcache;
2601};
2602
2603static void
2604coro_aio_callback (pTHX_ CV *cv)
2605{
2606 dXSARGS;
2607 AV *state = (AV *)GENSUB_ARG;
2608 SV *coro = av_pop (state);
2609 SV *data_sv = newSV (sizeof (struct io_state));
2610
2611 av_extend (state, items - 1);
2612
2613 sv_upgrade (data_sv, SVt_PV);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616
2617 {
2618 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2619
2620 data->errorno = errno;
2621 data->laststype = PL_laststype;
2622 data->laststatval = PL_laststatval;
2623 data->statcache = PL_statcache;
2624 }
2625
2626 /* now build the result vector out of all the parameters and the data_sv */
2627 {
2628 int i;
2629
2630 for (i = 0; i < items; ++i)
2631 av_push (state, SvREFCNT_inc_NN (ST (i)));
2632 }
2633
2634 av_push (state, data_sv);
2635
2636 api_ready (aTHX_ coro);
2637 SvREFCNT_dec (coro);
2638 SvREFCNT_dec ((AV *)state);
2639}
2640
2641static int
2642slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2643{
2644 AV *state = (AV *)frame->data;
2645
2646 /* if we are about to throw, return early */
2647 /* this does not cancel the aio request, but at least */
2648 /* it quickly returns */
2649 if (CORO_THROW)
2650 return 0;
2651
2652 /* one element that is an RV? repeat! */
2653 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2654 return 1;
2655
2656 /* restore status */
2657 {
2658 SV *data_sv = av_pop (state);
2659 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2660
2661 errno = data->errorno;
2662 PL_laststype = data->laststype;
2663 PL_laststatval = data->laststatval;
2664 PL_statcache = data->statcache;
2665
2666 SvREFCNT_dec (data_sv);
2667 }
2668
2669 /* push result values */
2670 {
2671 dSP;
2672 int i;
2673
2674 EXTEND (SP, AvFILLp (state) + 1);
2675 for (i = 0; i <= AvFILLp (state); ++i)
2676 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2677
2678 PUTBACK;
2679 }
2680
2681 return 0;
2682}
2683
2684static void
2685slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2686{
2687 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2688 SV *coro_hv = SvRV (coro_current);
2689 struct coro *coro = SvSTATE_hv (coro_hv);
2690
2691 /* put our coroutine id on the state arg */
2692 av_push (state, SvREFCNT_inc_NN (coro_hv));
2693
2694 /* first see whether we have a non-zero priority and set it as AIO prio */
2695 if (coro->prio)
2696 {
2697 dSP;
2698
2699 static SV *prio_cv;
2700 static SV *prio_sv;
2701
2702 if (expect_false (!prio_cv))
1251 { 2703 {
1252 UNLOCK; 2704 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
1253 SvREFCNT_dec (next_sv); 2705 prio_sv = newSViv (0);
1254 /* coro_nready is already taken care of by destroy */
1255 continue;
1256 } 2706 }
1257 2707
1258 --coro_nready; 2708 PUSHMARK (SP);
1259 UNLOCK; 2709 sv_setiv (prio_sv, coro->prio);
1260 break; 2710 XPUSHs (prio_sv);
1261 }
1262 2711
1263 /* free this only after the transfer */ 2712 PUTBACK;
1264 prev_sv = SvRV (coro_current); 2713 call_sv (prio_cv, G_VOID | G_DISCARD);
1265 ta->prev = SvSTATE (prev_sv);
1266 TRANSFER_CHECK (*ta);
1267 assert (ta->next->flags & CF_READY);
1268 ta->next->flags &= ~CF_READY;
1269 SvRV_set (coro_current, next_sv);
1270
1271 LOCK;
1272 free_coro_mortal (aTHX);
1273 coro_mortal = prev_sv;
1274 UNLOCK;
1275}
1276
1277static void
1278prepare_cede (pTHX_ struct transfer_args *ta)
1279{
1280 api_ready (coro_current);
1281 prepare_schedule (aTHX_ ta);
1282}
1283
1284static int
1285prepare_cede_notself (pTHX_ struct transfer_args *ta)
1286{
1287 if (coro_nready)
1288 { 2714 }
1289 SV *prev = SvRV (coro_current); 2715
1290 prepare_schedule (aTHX_ ta); 2716 /* now call the original request */
1291 api_ready (prev); 2717 {
1292 return 1; 2718 dSP;
2719 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2720 int i;
2721
2722 PUSHMARK (SP);
2723
2724 /* first push all args to the stack */
2725 EXTEND (SP, items + 1);
2726
2727 for (i = 0; i < items; ++i)
2728 PUSHs (arg [i]);
2729
2730 /* now push the callback closure */
2731 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2732
2733 /* now call the AIO function - we assume our request is uncancelable */
2734 PUTBACK;
2735 call_sv ((SV *)req, G_VOID | G_DISCARD);
1293 } 2736 }
1294 else
1295 return 0;
1296}
1297 2737
1298static void 2738 /* now that the requets is going, we loop toll we have a result */
1299api_schedule (void) 2739 frame->data = (void *)state;
1300{ 2740 frame->prepare = prepare_schedule;
1301 dTHX; 2741 frame->check = slf_check_aio_req;
1302 struct transfer_args ta;
1303
1304 prepare_schedule (aTHX_ &ta);
1305 TRANSFER (ta);
1306} 2742}
1307 2743
1308static int 2744static void
1309api_cede (void) 2745coro_aio_req_xs (pTHX_ CV *cv)
1310{ 2746{
1311 dTHX; 2747 dXSARGS;
1312 struct transfer_args ta;
1313 2748
1314 prepare_cede (aTHX_ &ta); 2749 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1315 2750
1316 if (ta.prev != ta.next) 2751 XSRETURN_EMPTY;
1317 {
1318 TRANSFER (ta);
1319 return 1;
1320 }
1321 else
1322 return 0;
1323} 2752}
1324 2753
1325static int 2754/*****************************************************************************/
1326api_cede_notself (void)
1327{
1328 dTHX;
1329 struct transfer_args ta;
1330 2755
1331 if (prepare_cede_notself (aTHX_ &ta)) 2756#if CORO_CLONE
1332 { 2757# include "clone.c"
1333 TRANSFER (ta); 2758#endif
1334 return 1;
1335 }
1336 else
1337 return 0;
1338}
1339 2759
1340MODULE = Coro::State PACKAGE = Coro::State 2760MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1341 2761
1342PROTOTYPES: DISABLE 2762PROTOTYPES: DISABLE
1343 2763
1344BOOT: 2764BOOT:
1345{ 2765{
1346#ifdef USE_ITHREADS 2766#ifdef USE_ITHREADS
1347 MUTEX_INIT (&coro_mutex); 2767# if CORO_PTHREAD
2768 coro_thx = PERL_GET_CONTEXT;
2769# endif
1348#endif 2770#endif
1349 BOOT_PAGESIZE; 2771 BOOT_PAGESIZE;
2772
2773 cctx_current = cctx_new_empty ();
2774
2775 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2776 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2777
2778 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2779 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2780 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2781
2782 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2783 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2784 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1350 2785
1351 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2786 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1352 2787
1353 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2788 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1354 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2789 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1355 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 2790 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1356 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 2791 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1357 2792
1358 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1359 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1360 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1361 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1362 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1363 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1364 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1365
1366 main_mainstack = PL_mainstack; 2793 main_mainstack = PL_mainstack;
1367 main_top_env = PL_top_env; 2794 main_top_env = PL_top_env;
1368 2795
1369 while (main_top_env->je_prev) 2796 while (main_top_env->je_prev)
1370 main_top_env = main_top_env->je_prev; 2797 main_top_env = main_top_env->je_prev;
1371 2798
2799 {
2800 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2801
2802 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2803 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2804
2805 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2806 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2807 }
2808
1372 coroapi.ver = CORO_API_VERSION; 2809 coroapi.ver = CORO_API_VERSION;
2810 coroapi.rev = CORO_API_REVISION;
2811
1373 coroapi.transfer = api_transfer; 2812 coroapi.transfer = api_transfer;
2813
2814 coroapi.sv_state = SvSTATE_;
2815 coroapi.execute_slf = api_execute_slf;
2816 coroapi.prepare_nop = prepare_nop;
2817 coroapi.prepare_schedule = prepare_schedule;
2818 coroapi.prepare_cede = prepare_cede;
2819 coroapi.prepare_cede_notself = prepare_cede_notself;
2820
2821 {
2822 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2823
2824 if (!svp) croak ("Time::HiRes is required");
2825 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2826
2827 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2828 }
1374 2829
1375 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2830 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1376} 2831}
1377 2832
1378SV * 2833SV *
1379new (char *klass, ...) 2834new (char *klass, ...)
2835 ALIAS:
2836 Coro::new = 1
1380 CODE: 2837 CODE:
1381{ 2838{
1382 struct coro *coro; 2839 struct coro *coro;
2840 MAGIC *mg;
1383 HV *hv; 2841 HV *hv;
2842 CV *cb;
1384 int i; 2843 int i;
1385 2844
2845 if (items > 1)
2846 {
2847 cb = coro_sv_2cv (aTHX_ ST (1));
2848
2849 if (!ix)
2850 {
2851 if (CvISXSUB (cb))
2852 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2853
2854 if (!CvROOT (cb))
2855 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2856 }
2857 }
2858
1386 Newz (0, coro, 1, struct coro); 2859 Newz (0, coro, 1, struct coro);
1387 coro->args = newAV (); 2860 coro->args = newAV ();
1388 coro->save = CORO_SAVE_DEF;
1389 coro->flags = CF_NEW; 2861 coro->flags = CF_NEW;
1390 2862
1391 if (coro_first) coro_first->prev = coro; 2863 if (coro_first) coro_first->prev = coro;
1392 coro->next = coro_first; 2864 coro->next = coro_first;
1393 coro_first = coro; 2865 coro_first = coro;
1394 2866
1395 coro->hv = hv = newHV (); 2867 coro->hv = hv = newHV ();
1396 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2868 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2869 mg->mg_flags |= MGf_DUP;
1397 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2870 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1398 2871
2872 if (items > 1)
2873 {
2874 av_extend (coro->args, items - 1 + ix - 1);
2875
2876 if (ix)
2877 {
2878 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2879 cb = cv_coro_run;
2880 }
2881
2882 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2883
1399 for (i = 1; i < items; i++) 2884 for (i = 2; i < items; i++)
1400 av_push (coro->args, newSVsv (ST (i))); 2885 av_push (coro->args, newSVsv (ST (i)));
2886 }
1401} 2887}
1402 OUTPUT: 2888 OUTPUT:
1403 RETVAL 2889 RETVAL
1404 2890
1405int 2891void
1406save (SV *coro, int new_save = -1) 2892transfer (...)
2893 PROTOTYPE: $$
1407 CODE: 2894 CODE:
1408 RETVAL = api_save (coro, new_save); 2895 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1409 OUTPUT:
1410 RETVAL
1411
1412int
1413save_also (SV *coro_sv, int save_also)
1414 CODE:
1415{
1416 struct coro *coro = SvSTATE (coro_sv);
1417 RETVAL = coro->save;
1418 coro->save |= save_also;
1419}
1420 OUTPUT:
1421 RETVAL
1422
1423void
1424_set_stacklevel (...)
1425 ALIAS:
1426 Coro::State::transfer = 1
1427 Coro::schedule = 2
1428 Coro::cede = 3
1429 Coro::cede_notself = 4
1430 CODE:
1431{
1432 struct transfer_args ta;
1433
1434 switch (ix)
1435 {
1436 case 0:
1437 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1438 ta.next = 0;
1439 break;
1440
1441 case 1:
1442 if (items != 2)
1443 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1444
1445 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1446 break;
1447
1448 case 2:
1449 prepare_schedule (aTHX_ &ta);
1450 break;
1451
1452 case 3:
1453 prepare_cede (aTHX_ &ta);
1454 break;
1455
1456 case 4:
1457 if (!prepare_cede_notself (aTHX_ &ta))
1458 XSRETURN_EMPTY;
1459
1460 break;
1461 }
1462
1463 BARRIER;
1464 TRANSFER (ta);
1465
1466 if (GIMME_V != G_VOID && ta.next != ta.prev)
1467 XSRETURN_YES;
1468}
1469 2896
1470bool 2897bool
1471_destroy (SV *coro_sv) 2898_destroy (SV *coro_sv)
1472 CODE: 2899 CODE:
1473 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2900 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1474 OUTPUT: 2901 OUTPUT:
1475 RETVAL 2902 RETVAL
1476 2903
1477void 2904void
1478_exit (code) 2905_exit (int code)
1479 int code
1480 PROTOTYPE: $ 2906 PROTOTYPE: $
1481 CODE: 2907 CODE:
1482 _exit (code); 2908 _exit (code);
1483 2909
2910SV *
2911clone (Coro::State coro)
2912 CODE:
2913{
2914#if CORO_CLONE
2915 struct coro *ncoro = coro_clone (coro);
2916 MAGIC *mg;
2917 /* TODO: too much duplication */
2918 ncoro->hv = newHV ();
2919 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2920 mg->mg_flags |= MGf_DUP;
2921 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2922#else
2923 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2924#endif
2925}
2926 OUTPUT:
2927 RETVAL
2928
1484int 2929int
1485cctx_stacksize (int new_stacksize = 0) 2930cctx_stacksize (int new_stacksize = 0)
2931 PROTOTYPE: ;$
1486 CODE: 2932 CODE:
1487 RETVAL = coro_stacksize; 2933 RETVAL = cctx_stacksize;
1488 if (new_stacksize) 2934 if (new_stacksize)
2935 {
1489 coro_stacksize = new_stacksize; 2936 cctx_stacksize = new_stacksize;
2937 ++cctx_gen;
2938 }
1490 OUTPUT: 2939 OUTPUT:
1491 RETVAL 2940 RETVAL
1492 2941
1493int 2942int
2943cctx_max_idle (int max_idle = 0)
2944 PROTOTYPE: ;$
2945 CODE:
2946 RETVAL = cctx_max_idle;
2947 if (max_idle > 1)
2948 cctx_max_idle = max_idle;
2949 OUTPUT:
2950 RETVAL
2951
2952int
1494cctx_count () 2953cctx_count ()
2954 PROTOTYPE:
1495 CODE: 2955 CODE:
1496 RETVAL = cctx_count; 2956 RETVAL = cctx_count;
1497 OUTPUT: 2957 OUTPUT:
1498 RETVAL 2958 RETVAL
1499 2959
1500int 2960int
1501cctx_idle () 2961cctx_idle ()
2962 PROTOTYPE:
1502 CODE: 2963 CODE:
1503 RETVAL = cctx_idle; 2964 RETVAL = cctx_idle;
1504 OUTPUT: 2965 OUTPUT:
1505 RETVAL 2966 RETVAL
1506 2967
1507void 2968void
1508list () 2969list ()
2970 PROTOTYPE:
1509 PPCODE: 2971 PPCODE:
1510{ 2972{
1511 struct coro *coro; 2973 struct coro *coro;
1512 for (coro = coro_first; coro; coro = coro->next) 2974 for (coro = coro_first; coro; coro = coro->next)
1513 if (coro->hv) 2975 if (coro->hv)
… …
1518call (Coro::State coro, SV *coderef) 2980call (Coro::State coro, SV *coderef)
1519 ALIAS: 2981 ALIAS:
1520 eval = 1 2982 eval = 1
1521 CODE: 2983 CODE:
1522{ 2984{
1523 if (coro->mainstack) 2985 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1524 { 2986 {
1525 struct coro temp; 2987 struct coro temp;
1526 Zero (&temp, 1, struct coro);
1527 temp.save = CORO_SAVE_ALL;
1528 2988
1529 if (!(coro->flags & CF_RUNNING)) 2989 if (!(coro->flags & CF_RUNNING))
1530 { 2990 {
2991 PUTBACK;
1531 save_perl (aTHX_ &temp); 2992 save_perl (aTHX_ &temp);
1532 load_perl (aTHX_ coro); 2993 load_perl (aTHX_ coro);
1533 } 2994 }
1534 2995
1535 { 2996 {
1536 dSP; 2997 dSP;
1537 ENTER; 2998 ENTER;
1538 SAVETMPS; 2999 SAVETMPS;
3000 PUTBACK;
3001 PUSHSTACK;
1539 PUSHMARK (SP); 3002 PUSHMARK (SP);
1540 PUTBACK; 3003
1541 if (ix) 3004 if (ix)
1542 eval_sv (coderef, 0); 3005 eval_sv (coderef, 0);
1543 else 3006 else
1544 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3007 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3008
3009 POPSTACK;
1545 SPAGAIN; 3010 SPAGAIN;
1546 FREETMPS; 3011 FREETMPS;
1547 LEAVE; 3012 LEAVE;
1548 PUTBACK; 3013 PUTBACK;
1549 } 3014 }
1550 3015
1551 if (!(coro->flags & CF_RUNNING)) 3016 if (!(coro->flags & CF_RUNNING))
1552 { 3017 {
1553 save_perl (aTHX_ coro); 3018 save_perl (aTHX_ coro);
1554 load_perl (aTHX_ &temp); 3019 load_perl (aTHX_ &temp);
3020 SPAGAIN;
1555 } 3021 }
1556 } 3022 }
1557} 3023}
1558 3024
1559SV * 3025SV *
1560is_ready (Coro::State coro) 3026is_ready (Coro::State coro)
1561 PROTOTYPE: $ 3027 PROTOTYPE: $
1562 ALIAS: 3028 ALIAS:
1563 is_ready = CF_READY 3029 is_ready = CF_READY
… …
1568 RETVAL = boolSV (coro->flags & ix); 3034 RETVAL = boolSV (coro->flags & ix);
1569 OUTPUT: 3035 OUTPUT:
1570 RETVAL 3036 RETVAL
1571 3037
1572void 3038void
3039throw (Coro::State self, SV *throw = &PL_sv_undef)
3040 PROTOTYPE: $;$
3041 CODE:
3042{
3043 struct coro *current = SvSTATE_current;
3044 SV **throwp = self == current ? &CORO_THROW : &self->except;
3045 SvREFCNT_dec (*throwp);
3046 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3047}
3048
3049void
1573trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB) 3050api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1574 CODE: 3051 PROTOTYPE: $;$
1575 if (flags & CC_TRACE) 3052 C_ARGS: aTHX_ coro, flags
1576 {
1577 if (!coro->cctx)
1578 coro->cctx = cctx_new ();
1579 else if (!(coro->cctx->flags & CC_TRACE))
1580 croak ("cannot enable tracing on coroutine with custom stack");
1581
1582 coro->cctx->flags |= flags & (CC_TRACE | CC_TRACE_ALL);
1583 }
1584 else
1585 if (coro->cctx && coro->cctx->flags & CC_TRACE)
1586 {
1587 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1588 coro->cctx->flags |= CC_NOREUSE;
1589
1590 if (coro->flags & CF_RUNNING)
1591 PL_runops = RUNOPS_DEFAULT;
1592 else
1593 coro->runops = RUNOPS_DEFAULT;
1594 }
1595 3053
1596SV * 3054SV *
1597has_stack (Coro::State coro) 3055has_cctx (Coro::State coro)
1598 PROTOTYPE: $ 3056 PROTOTYPE: $
1599 CODE: 3057 CODE:
1600 RETVAL = boolSV (!!coro->cctx); 3058 /* maybe manage the running flag differently */
3059 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1601 OUTPUT: 3060 OUTPUT:
1602 RETVAL 3061 RETVAL
1603 3062
1604int 3063int
1605is_traced (Coro::State coro) 3064is_traced (Coro::State coro)
… …
1607 CODE: 3066 CODE:
1608 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3067 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1609 OUTPUT: 3068 OUTPUT:
1610 RETVAL 3069 RETVAL
1611 3070
1612IV 3071UV
1613rss (Coro::State coro) 3072rss (Coro::State coro)
1614 PROTOTYPE: $ 3073 PROTOTYPE: $
3074 ALIAS:
3075 usecount = 1
1615 CODE: 3076 CODE:
1616 RETVAL = coro_rss (coro); 3077 switch (ix)
3078 {
3079 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3080 case 1: RETVAL = coro->usecount; break;
3081 }
1617 OUTPUT: 3082 OUTPUT:
1618 RETVAL 3083 RETVAL
1619 3084
3085void
3086force_cctx ()
3087 PROTOTYPE:
3088 CODE:
3089 cctx_current->idle_sp = 0;
3090
3091void
3092swap_defsv (Coro::State self)
3093 PROTOTYPE: $
3094 ALIAS:
3095 swap_defav = 1
3096 CODE:
3097 if (!self->slot)
3098 croak ("cannot swap state with coroutine that has no saved state,");
3099 else
3100 {
3101 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3102 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3103
3104 SV *tmp = *src; *src = *dst; *dst = tmp;
3105 }
3106
1620 3107
1621MODULE = Coro::State PACKAGE = Coro 3108MODULE = Coro::State PACKAGE = Coro
1622 3109
1623BOOT: 3110BOOT:
1624{ 3111{
1625 int i; 3112 int i;
1626 3113
1627 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3114 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1628 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3115 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3116 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3117 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3118 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1629 av_async_pool = get_av ("Coro::async_pool", TRUE); 3119 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3120 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3121 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3122 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1630 3123
1631 coro_current = get_sv ("Coro::current", FALSE); 3124 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1632 SvREADONLY_on (coro_current); 3125 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3126 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3127 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1633 3128
1634 coro_stash = gv_stashpv ("Coro", TRUE); 3129 coro_stash = gv_stashpv ("Coro", TRUE);
1635 3130
1636 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3131 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1637 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3132 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1638 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3133 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1639 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3134 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1642 3137
1643 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3138 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1644 coro_ready[i] = newAV (); 3139 coro_ready[i] = newAV ();
1645 3140
1646 { 3141 {
1647 SV *sv = perl_get_sv("Coro::API", 1); 3142 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1648 3143
1649 coroapi.schedule = api_schedule; 3144 coroapi.schedule = api_schedule;
1650 coroapi.save = api_save; 3145 coroapi.schedule_to = api_schedule_to;
1651 coroapi.cede = api_cede; 3146 coroapi.cede = api_cede;
1652 coroapi.cede_notself = api_cede_notself; 3147 coroapi.cede_notself = api_cede_notself;
1653 coroapi.ready = api_ready; 3148 coroapi.ready = api_ready;
1654 coroapi.is_ready = api_is_ready; 3149 coroapi.is_ready = api_is_ready;
1655 coroapi.nready = &coro_nready; 3150 coroapi.nready = coro_nready;
1656 coroapi.current = coro_current; 3151 coroapi.current = coro_current;
1657 3152
1658 GCoroAPI = &coroapi; 3153 /*GCoroAPI = &coroapi;*/
1659 sv_setiv (sv, (IV)&coroapi); 3154 sv_setiv (sv, (IV)&coroapi);
1660 SvREADONLY_on (sv); 3155 SvREADONLY_on (sv);
1661 } 3156 }
1662} 3157}
3158
3159void
3160terminate (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3163
3164void
3165schedule (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3168
3169void
3170schedule_to (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3173
3174void
3175cede_to (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3178
3179void
3180cede (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_cede);
3183
3184void
3185cede_notself (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3188
3189void
3190_cancel (Coro::State self)
3191 CODE:
3192 coro_state_destroy (aTHX_ self);
3193 coro_call_on_destroy (aTHX_ self);
1663 3194
1664void 3195void
1665_set_current (SV *current) 3196_set_current (SV *current)
1666 PROTOTYPE: $ 3197 PROTOTYPE: $
1667 CODE: 3198 CODE:
1668 SvREFCNT_dec (SvRV (coro_current)); 3199 SvREFCNT_dec (SvRV (coro_current));
1669 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3200 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3201
3202void
3203_set_readyhook (SV *hook)
3204 PROTOTYPE: $
3205 CODE:
3206 SvREFCNT_dec (coro_readyhook);
3207 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1670 3208
1671int 3209int
1672prio (Coro::State coro, int newprio = 0) 3210prio (Coro::State coro, int newprio = 0)
3211 PROTOTYPE: $;$
1673 ALIAS: 3212 ALIAS:
1674 nice = 1 3213 nice = 1
1675 CODE: 3214 CODE:
1676{ 3215{
1677 RETVAL = coro->prio; 3216 RETVAL = coro->prio;
… …
1692 3231
1693SV * 3232SV *
1694ready (SV *self) 3233ready (SV *self)
1695 PROTOTYPE: $ 3234 PROTOTYPE: $
1696 CODE: 3235 CODE:
1697 RETVAL = boolSV (api_ready (self)); 3236 RETVAL = boolSV (api_ready (aTHX_ self));
1698 OUTPUT: 3237 OUTPUT:
1699 RETVAL 3238 RETVAL
1700 3239
1701int 3240int
1702nready (...) 3241nready (...)
… …
1704 CODE: 3243 CODE:
1705 RETVAL = coro_nready; 3244 RETVAL = coro_nready;
1706 OUTPUT: 3245 OUTPUT:
1707 RETVAL 3246 RETVAL
1708 3247
1709# for async_pool speedup
1710void 3248void
1711_pool_1 (SV *cb) 3249_pool_handler (...)
1712 CODE: 3250 CODE:
1713{ 3251 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1714 int i, len;
1715 HV *hv = (HV *)SvRV (coro_current);
1716 AV *defav = GvAV (PL_defgv);
1717 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1718 AV *invoke_av;
1719 3252
1720 if (!invoke) 3253void
1721 croak ("\3terminate\2\n"); 3254async_pool (SV *cv, ...)
3255 PROTOTYPE: &@
3256 PPCODE:
3257{
3258 HV *hv = (HV *)av_pop (av_async_pool);
3259 AV *av = newAV ();
3260 SV *cb = ST (0);
3261 int i;
1722 3262
1723 hv_store (hv, "desc", sizeof ("desc") - 1, 3263 av_extend (av, items - 2);
1724 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 3264 for (i = 1; i < items; ++i)
3265 av_push (av, SvREFCNT_inc_NN (ST (i)));
1725 3266
1726 invoke_av = (AV *)SvRV (invoke); 3267 if ((SV *)hv == &PL_sv_undef)
1727 len = av_len (invoke_av);
1728
1729 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1730
1731 if (len > 0)
1732 { 3268 {
1733 av_fill (defav, len - 1); 3269 PUSHMARK (SP);
1734 for (i = 0; i < len; ++i) 3270 EXTEND (SP, 2);
1735 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3271 PUSHs (sv_Coro);
3272 PUSHs ((SV *)cv_pool_handler);
3273 PUTBACK;
3274 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3275 SPAGAIN;
3276
3277 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1736 } 3278 }
1737 3279
3280 {
3281 struct coro *coro = SvSTATE_hv (hv);
3282
3283 assert (!coro->invoke_cb);
3284 assert (!coro->invoke_av);
3285 coro->invoke_cb = SvREFCNT_inc (cb);
3286 coro->invoke_av = av;
3287 }
3288
3289 api_ready (aTHX_ (SV *)hv);
3290
3291 if (GIMME_V != G_VOID)
3292 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3293 else
1738 SvREFCNT_dec (invoke); 3294 SvREFCNT_dec (hv);
1739} 3295}
1740 3296
1741void 3297SV *
1742_pool_2 (SV *cb) 3298rouse_cb ()
3299 PROTOTYPE:
1743 CODE: 3300 CODE:
1744{ 3301 RETVAL = coro_new_rouse_cb (aTHX);
1745 struct coro *coro = SvSTATE (coro_current);
1746
1747 sv_setsv (cb, &PL_sv_undef);
1748
1749 if (coro_rss (coro) > SvIV (sv_pool_rss)
1750 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1751 croak ("\3terminate\2\n");
1752
1753 av_clear (GvAV (PL_defgv));
1754 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1755 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1756 coro->save = CORO_SAVE_DEF;
1757 coro->prio = 0;
1758 av_push (av_async_pool, newSVsv (coro_current));
1759}
1760
1761
1762MODULE = Coro::State PACKAGE = Coro::AIO
1763
1764SV *
1765_get_state ()
1766 CODE:
1767{
1768 struct io_state *data;
1769
1770 RETVAL = newSV (sizeof (struct io_state));
1771 data = (struct io_state *)SvPVX (RETVAL);
1772 SvCUR_set (RETVAL, sizeof (struct io_state));
1773 SvPOK_only (RETVAL);
1774
1775 data->errorno = errno;
1776 data->laststype = PL_laststype;
1777 data->laststatval = PL_laststatval;
1778 data->statcache = PL_statcache;
1779}
1780 OUTPUT: 3302 OUTPUT:
1781 RETVAL 3303 RETVAL
1782 3304
1783void 3305void
1784_set_state (char *data_) 3306rouse_wait (...)
1785 PROTOTYPE: $ 3307 PROTOTYPE: ;$
3308 PPCODE:
3309 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3310
3311
3312MODULE = Coro::State PACKAGE = PerlIO::cede
3313
3314BOOT:
3315 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3316
3317
3318MODULE = Coro::State PACKAGE = Coro::Semaphore
3319
3320SV *
3321new (SV *klass, SV *count = 0)
1786 CODE: 3322 CODE:
1787{ 3323 RETVAL = sv_bless (
1788 struct io_state *data = (void *)data_; 3324 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3325 GvSTASH (CvGV (cv))
3326 );
3327 OUTPUT:
3328 RETVAL
1789 3329
1790 errno = data->errorno; 3330# helper for Coro::Channel
1791 PL_laststype = data->laststype; 3331SV *
1792 PL_laststatval = data->laststatval; 3332_alloc (int count)
1793 PL_statcache = data->statcache; 3333 CODE:
1794} 3334 RETVAL = coro_waitarray_new (aTHX_ count);
3335 OUTPUT:
3336 RETVAL
1795 3337
3338SV *
3339count (SV *self)
3340 CODE:
3341 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3342 OUTPUT:
3343 RETVAL
3344
3345void
3346up (SV *self, int adjust = 1)
3347 ALIAS:
3348 adjust = 1
3349 CODE:
3350 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3351
3352void
3353down (...)
3354 CODE:
3355 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3356
3357void
3358wait (...)
3359 CODE:
3360 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3361
3362void
3363try (SV *self)
3364 PPCODE:
3365{
3366 AV *av = (AV *)SvRV (self);
3367 SV *count_sv = AvARRAY (av)[0];
3368 IV count = SvIVX (count_sv);
3369
3370 if (count > 0)
3371 {
3372 --count;
3373 SvIVX (count_sv) = count;
3374 XSRETURN_YES;
3375 }
3376 else
3377 XSRETURN_NO;
3378}
3379
3380void
3381waiters (SV *self)
3382 PPCODE:
3383{
3384 AV *av = (AV *)SvRV (self);
3385 int wcount = AvFILLp (av) + 1 - 1;
3386
3387 if (GIMME_V == G_SCALAR)
3388 XPUSHs (sv_2mortal (newSViv (wcount)));
3389 else
3390 {
3391 int i;
3392 EXTEND (SP, wcount);
3393 for (i = 1; i <= wcount; ++i)
3394 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3395 }
3396}
3397
3398MODULE = Coro::State PACKAGE = Coro::Signal
3399
3400SV *
3401new (SV *klass)
3402 CODE:
3403 RETVAL = sv_bless (
3404 coro_waitarray_new (aTHX_ 0),
3405 GvSTASH (CvGV (cv))
3406 );
3407 OUTPUT:
3408 RETVAL
3409
3410void
3411wait (...)
3412 CODE:
3413 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3414
3415void
3416broadcast (SV *self)
3417 CODE:
3418{
3419 AV *av = (AV *)SvRV (self);
3420 coro_signal_wake (aTHX_ av, AvFILLp (av));
3421}
3422
3423void
3424send (SV *self)
3425 CODE:
3426{
3427 AV *av = (AV *)SvRV (self);
3428
3429 if (AvFILLp (av))
3430 coro_signal_wake (aTHX_ av, 1);
3431 else
3432 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3433}
3434
3435IV
3436awaited (SV *self)
3437 CODE:
3438 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3439 OUTPUT:
3440 RETVAL
3441
3442
3443MODULE = Coro::State PACKAGE = Coro::AnyEvent
3444
3445BOOT:
3446 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3447
3448void
3449_schedule (...)
3450 CODE:
3451{
3452 static int incede;
3453
3454 api_cede_notself (aTHX);
3455
3456 ++incede;
3457 while (coro_nready >= incede && api_cede (aTHX))
3458 ;
3459
3460 sv_setsv (sv_activity, &PL_sv_undef);
3461 if (coro_nready >= incede)
3462 {
3463 PUSHMARK (SP);
3464 PUTBACK;
3465 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3466 }
3467
3468 --incede;
3469}
3470
3471
3472MODULE = Coro::State PACKAGE = Coro::AIO
3473
3474void
3475_register (char *target, char *proto, SV *req)
3476 CODE:
3477{
3478 CV *req_cv = coro_sv_2cv (aTHX_ req);
3479 /* newXSproto doesn't return the CV on 5.8 */
3480 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3481 sv_setpv ((SV *)slf_cv, proto);
3482 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3483}
3484

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