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Comparing Coro/Coro/State.xs (file contents):
Revision 1.140 by root, Sat Jan 20 19:52:15 2007 UTC vs.
Revision 1.323 by root, Sat Nov 22 06:03:10 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8 12
9#include <stdio.h> 13#include <stdio.h>
10#include <errno.h> 14#include <errno.h>
11#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
12 25
13#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
14# include <unistd.h> 27# include <unistd.h>
15# include <sys/mman.h> 28# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
31#else 44#else
32# define PAGESIZE 0 45# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
34#endif 47#endif
35 48
36#if USE_VALGRIND 49#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
38#endif 51#endif
39 52
40/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
42 55
43#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
44 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
45 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
46 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
47 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
48 61
49#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
50# ifndef PL_ppaddr 63# ifndef PL_ppaddr
51# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
52# endif 65# endif
… …
65# ifndef IS_PADCONST 78# ifndef IS_PADCONST
66# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
67# endif 80# endif
68#endif 81#endif
69 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
70/* 5.8.7 */ 110/* 5.8.7 */
71#ifndef SvRV_set 111#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
73#endif 113#endif
74 114
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD 116# undef CORO_STACKGUARD
77#endif 117#endif
78 118
79#ifndef STACKGUARD 119#ifndef CORO_STACKGUARD
80# define STACKGUARD 0 120# define CORO_STACKGUARD 0
81#endif 121#endif
82 122
83/* prefer perl internal functions over our own? */ 123/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS 124#ifndef CORO_PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
86#endif 126#endif
87 127
88/* The next macro should declare a variable stacklevel that contains and approximation 128/* The next macros try to return the current stack pointer, in an as
89 * to the current C stack pointer. Its property is that it changes with each call 129 * portable way as possible. */
90 * and should be unique. */ 130#if __GNUC__ >= 4
91#define dSTACKLEVEL int stacklevel 131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
134# define dSTACKLEVEL volatile void *stacklevel
92#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
93 137
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 139
96#if __GNUC__ >= 3 140#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
99#else 144#else
100# define attribute(x) 145# define attribute(x)
101# define BARRIER 146# define expect(expr,value) (expr)
147# define INLINE static
102#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
103 152
104#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
105 154
106#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
107 157
108#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
109static perl_mutex coro_mutex; 159# if CORO_PTHREAD
110# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
111# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
112#else
113# define LOCK (void)0
114# define UNLOCK (void)0
115#endif 161# endif
162#endif
116 163
117/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
118struct io_state
119{
120 int errorno;
121 I32 laststype;
122 int laststatval;
123 Stat_t statcache;
124};
125 165
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;
171static size_t cctx_stacksize = CORO_STACKSIZE;
126static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
127static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
174static JMPENV *main_top_env;
128static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
129static SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180
181static GV *irsgv; /* $/ */
182static GV *stdoutgv; /* *STDOUT */
183static SV *rv_diehook;
184static SV *rv_warnhook;
185static HV *hv_sig; /* %SIG */
186
187/* async_pool helper stuff */
188static SV *sv_pool_rss;
189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
195
196/* Coro::AnyEvent */
197static SV *sv_activity;
130 198
131static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
132static int cctx_count, cctx_idle; 200static int cctx_count, cctx_idle;
133 201
202enum {
203 CC_MAPPED = 0x01,
204 CC_NOREUSE = 0x02, /* throw this away after tracing */
205 CC_TRACE = 0x04,
206 CC_TRACE_SUB = 0x08, /* trace sub calls */
207 CC_TRACE_LINE = 0x10, /* trace each statement */
208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
209};
210
134/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
135typedef struct coro_cctx { 212typedef struct coro_cctx
213{
136 struct coro_cctx *next; 214 struct coro_cctx *next;
137 215
138 /* the stack */ 216 /* the stack */
139 void *sptr; 217 void *sptr;
140 long ssize; /* positive == mmap, otherwise malloc */ 218 size_t ssize;
141 219
142 /* cpu state */ 220 /* cpu state */
143 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 221 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
144 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 222 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
145 JMPENV *top_env; 223 JMPENV *top_env;
146 coro_context cctx; 224 coro_context cctx;
147 225
148 int inuse; 226 U32 gen;
149
150#if USE_VALGRIND 227#if CORO_USE_VALGRIND
151 int valgrind_id; 228 int valgrind_id;
152#endif 229#endif
230 unsigned char flags;
153} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
154 236
155enum { 237enum {
156 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
157 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
158 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
159 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
160}; 242};
161 243
162/* this is a structure representing a perl-level coroutine */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
163struct coro { 245typedef struct
164 /* the c coroutine allocated to this perl coroutine, if any */ 246{
165 coro_cctx *cctx; 247 SV *defsv;
166 248 AV *defav;
167 /* data associated with this coroutine (initial args) */ 249 SV *errsv;
168 AV *args; 250 SV *irsgv;
169 int refcnt;
170 int save; /* CORO_SAVE flags */
171 int flags; /* CF_ flags */
172
173 /* optionally saved, might be zero */
174 AV *defav; /* @_ */
175 SV *defsv; /* $_ */
176 SV *errsv; /* $@ */
177 SV *irssv; /* $/ */
178 SV *irssv_sv; /* real $/ cache */
179
180#define VAR(name,type) type name; 251#define VAR(name,type) type name;
181# include "state.h" 252# include "state.h"
182#undef VAR 253#undef VAR
254} perl_slots;
255
256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
257
258/* this is a structure representing a perl-level coroutine */
259struct coro {
260 /* the C coroutine allocated to this perl coroutine, if any */
261 coro_cctx *cctx;
262
263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
265 AV *mainstack;
266 perl_slots *slot; /* basically the saved sp */
267
268 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
274
275 /* statistics */
276 int usecount; /* number of transfers to this coro */
183 277
184 /* coro process data */ 278 /* coro process data */
185 int prio; 279 int prio;
280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
282
283 /* async_pool */
284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
287
288 /* linked list */
289 struct coro *next, *prev;
186}; 290};
187 291
188typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
189typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
298static struct CoroSLF slf_frame; /* the current slf frame */
190 299
191/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
192 301
193#define PRIO_MAX 3 302#define PRIO_MAX 3
194#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
197#define PRIO_IDLE -3 306#define PRIO_IDLE -3
198#define PRIO_MIN -4 307#define PRIO_MIN -4
199 308
200/* for Coro.pm */ 309/* for Coro.pm */
201static SV *coro_current; 310static SV *coro_current;
311static SV *coro_readyhook;
202static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
203static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
314static struct coro *coro_first;
315#define coro_nready coroapi.nready
204 316
205/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
206 318
319static SV *
320coro_get_sv (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_sv (name, create);
325#endif
326 return get_sv (name, create);
327}
328
207static AV * 329static AV *
330coro_get_av (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_av (name, create);
335#endif
336 return get_av (name, create);
337}
338
339static HV *
340coro_get_hv (pTHX_ const char *name, int create)
341{
342#if PERL_VERSION_ATLEAST (5,10,0)
343 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
344 get_hv (name, create);
345#endif
346 return get_hv (name, create);
347}
348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
358static AV *
208coro_clone_padlist (CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
209{ 360{
210 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
211 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
212 363
213 newpadlist = newAV (); 364 newpadlist = newAV ();
214 AvREAL_off (newpadlist); 365 AvREAL_off (newpadlist);
215#if PERL_VERSION_ATLEAST (5,9,0) 366#if PERL_VERSION_ATLEAST (5,10,0)
216 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 367 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
217#else 368#else
218 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
219#endif 370#endif
220 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 371 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
221 --AvFILLp (padlist); 372 --AvFILLp (padlist);
222 373
223 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 374 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
224 av_store (newpadlist, 1, (SV *)newpad); 375 av_store (newpadlist, 1, (SV *)newpad);
225 376
226 return newpadlist; 377 return newpadlist;
227} 378}
228 379
229static void 380static void
230free_padlist (AV *padlist) 381free_padlist (pTHX_ AV *padlist)
231{ 382{
232 /* may be during global destruction */ 383 /* may be during global destruction */
233 if (SvREFCNT (padlist)) 384 if (SvREFCNT (padlist))
234 { 385 {
235 I32 i = AvFILLp (padlist); 386 I32 i = AvFILLp (padlist);
… …
256 AV *padlist; 407 AV *padlist;
257 AV *av = (AV *)mg->mg_obj; 408 AV *av = (AV *)mg->mg_obj;
258 409
259 /* casting is fun. */ 410 /* casting is fun. */
260 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 411 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
261 free_padlist (padlist); 412 free_padlist (aTHX_ padlist);
262 413
263 SvREFCNT_dec (av); 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
264 415
265 return 0; 416 return 0;
266} 417}
267 418
419#define CORO_MAGIC_type_cv 26
268#define PERL_MAGIC_coro PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
269 421
270static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 422static MGVTBL coro_cv_vtbl = {
423 0, 0, 0, 0,
424 coro_cv_free
425};
271 426
272#define CORO_MAGIC(cv) \ 427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
273 SvMAGIC (cv) \ 429 ? SvMAGIC (sv) \
274 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 430 : mg_find (sv, type))
275 ? SvMAGIC (cv) \ 431
276 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 432#define CORO_MAGIC(sv, type) \
433 (expect_true (SvMAGIC (sv)) \
434 ? CORO_MAGIC_NN (sv, type) \
277 : 0 435 : 0)
436
437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
439
440INLINE struct coro *
441SvSTATE_ (pTHX_ SV *coro)
442{
443 HV *stash;
444 MAGIC *mg;
445
446 if (SvROK (coro))
447 coro = SvRV (coro);
448
449 if (expect_false (SvTYPE (coro) != SVt_PVHV))
450 croak ("Coro::State object required");
451
452 stash = SvSTASH (coro);
453 if (expect_false (stash != coro_stash && stash != coro_state_stash))
454 {
455 /* very slow, but rare, check */
456 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
457 croak ("Coro::State object required");
458 }
459
460 mg = CORO_MAGIC_state (coro);
461 return (struct coro *)mg->mg_ptr;
462}
463
464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
278 469
279/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
280static void 471static void
281get_padlist (CV *cv) 472get_padlist (pTHX_ CV *cv)
282{ 473{
283 MAGIC *mg = CORO_MAGIC (cv); 474 MAGIC *mg = CORO_MAGIC_cv (cv);
284 AV *av; 475 AV *av;
285 476
286 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 477 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
287 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 478 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288 else 479 else
289 { 480 {
290#if PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
291 /* this is probably cleaner, but also slower? */ 482 /* this is probably cleaner? but also slower! */
483 /* in practise, it seems to be less stable */
292 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
293 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
294 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
295 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
296#else 488#else
297 CvPADLIST (cv) = coro_clone_padlist (cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
298#endif 490#endif
299 } 491 }
300} 492}
301 493
302static void 494static void
303put_padlist (CV *cv) 495put_padlist (pTHX_ CV *cv)
304{ 496{
305 MAGIC *mg = CORO_MAGIC (cv); 497 MAGIC *mg = CORO_MAGIC_cv (cv);
306 AV *av; 498 AV *av;
307 499
308 if (!mg) 500 if (expect_false (!mg))
309 { 501 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
310 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
311 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
312 mg->mg_virtual = &vtbl_coro;
313 mg->mg_obj = (SV *)newAV ();
314 }
315 502
316 av = (AV *)mg->mg_obj; 503 av = (AV *)mg->mg_obj;
317 504
318 if (AvFILLp (av) >= AvMAX (av)) 505 if (expect_false (AvFILLp (av) >= AvMAX (av)))
319 av_extend (av, AvMAX (av) + 1); 506 av_extend (av, AvMAX (av) + 1);
320 507
321 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 508 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322} 509}
323 510
324/** load & save, init *******************************************************/ 511/** load & save, init *******************************************************/
325 512
326#define SB do {
327#define SE } while (0)
328
329#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
330
331static void 513static void
332load_perl (Coro__State c) 514load_perl (pTHX_ Coro__State c)
333{ 515{
516 perl_slots *slot = c->slot;
517 c->slot = 0;
518
519 PL_mainstack = c->mainstack;
520
521 GvSV (PL_defgv) = slot->defsv;
522 GvAV (PL_defgv) = slot->defav;
523 GvSV (PL_errgv) = slot->errsv;
524 GvSV (irsgv) = slot->irsgv;
525
334#define VAR(name,type) PL_ ## name = c->name; 526 #define VAR(name,type) PL_ ## name = slot->name;
335# include "state.h" 527 # include "state.h"
336#undef VAR 528 #undef VAR
337
338 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
339 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
340 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
341 if (c->irssv)
342 {
343 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
344 SvREFCNT_dec (c->irssv);
345 else
346 {
347 REPLACE_SV (PL_rs, c->irssv);
348 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
349 sv_setsv (c->irssv_sv, PL_rs);
350 }
351 }
352 529
353 { 530 {
354 dSP; 531 dSP;
532
355 CV *cv; 533 CV *cv;
356 534
357 /* now do the ugly restore mess */ 535 /* now do the ugly restore mess */
358 while ((cv = (CV *)POPs)) 536 while (expect_true (cv = (CV *)POPs))
359 { 537 {
360 put_padlist (cv); /* mark this padlist as available */ 538 put_padlist (aTHX_ cv); /* mark this padlist as available */
361 CvDEPTH (cv) = PTR2IV (POPs); 539 CvDEPTH (cv) = PTR2IV (POPs);
362 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
363 } 541 }
364 542
365 PUTBACK; 543 PUTBACK;
366 } 544 }
367}
368 545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
548}
549
369static void 550static void
370save_perl (Coro__State c) 551save_perl (pTHX_ Coro__State c)
371{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
372 { 556 {
373 dSP; 557 dSP;
374 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
375 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
376 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
378 /* 562 /*
379 * the worst thing you can imagine happens first - we have to save 563 * the worst thing you can imagine happens first - we have to save
380 * (and reinitialize) all cv's in the whole callchain :( 564 * (and reinitialize) all cv's in the whole callchain :(
381 */ 565 */
382 566
383 EXTEND (SP, 3 + 1);
384 PUSHs (Nullsv); 567 XPUSHs (Nullsv);
385 /* this loop was inspired by pp_caller */ 568 /* this loop was inspired by pp_caller */
386 for (;;) 569 for (;;)
387 { 570 {
388 while (cxix >= 0) 571 while (expect_true (cxix >= 0))
389 { 572 {
390 PERL_CONTEXT *cx = &ccstk[cxix--]; 573 PERL_CONTEXT *cx = &ccstk[cxix--];
391 574
392 if (CxTYPE (cx) == CXt_SUB) 575 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
393 { 576 {
394 CV *cv = cx->blk_sub.cv; 577 CV *cv = cx->blk_sub.cv;
395 578
396 if (CvDEPTH (cv)) 579 if (expect_true (CvDEPTH (cv)))
397 { 580 {
398 EXTEND (SP, 3); 581 EXTEND (SP, 3);
399 PUSHs ((SV *)CvPADLIST (cv)); 582 PUSHs ((SV *)CvPADLIST (cv));
400 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 583 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
401 PUSHs ((SV *)cv); 584 PUSHs ((SV *)cv);
402 585
403 CvDEPTH (cv) = 0; 586 CvDEPTH (cv) = 0;
404 get_padlist (cv); 587 get_padlist (aTHX_ cv);
405 } 588 }
406 } 589 }
407 } 590 }
408 591
409 if (top_si->si_type == PERLSI_MAIN) 592 if (expect_true (top_si->si_type == PERLSI_MAIN))
410 break; 593 break;
411 594
412 top_si = top_si->si_prev; 595 top_si = top_si->si_prev;
413 ccstk = top_si->si_cxstack; 596 ccstk = top_si->si_cxstack;
414 cxix = top_si->si_cxix; 597 cxix = top_si->si_cxix;
415 } 598 }
416 599
417 PUTBACK; 600 PUTBACK;
418 } 601 }
419 602
420 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 603 /* allocate some space on the context stack for our purposes */
421 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 604 /* we manually unroll here, as usually 2 slots is enough */
422 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 605 if (SLOT_COUNT >= 1) CXINC;
423 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 606 if (SLOT_COUNT >= 2) CXINC;
607 if (SLOT_COUNT >= 3) CXINC;
608 {
609 int i;
610 for (i = 3; i < SLOT_COUNT; ++i)
611 CXINC;
612 }
613 cxstack_ix -= SLOT_COUNT; /* undo allocation */
424 614
615 c->mainstack = PL_mainstack;
616
617 {
618 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
619
620 slot->defav = GvAV (PL_defgv);
621 slot->defsv = DEFSV;
622 slot->errsv = ERRSV;
623 slot->irsgv = GvSV (irsgv);
624
425#define VAR(name,type)c->name = PL_ ## name; 625 #define VAR(name,type) slot->name = PL_ ## name;
426# include "state.h" 626 # include "state.h"
427#undef VAR 627 #undef VAR
628 }
428} 629}
429 630
430/* 631/*
431 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
432 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
433 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
434 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
435 */ 636 */
436#if PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
437# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
438#else 639#else
439static void 640static void
440coro_init_stacks () 641coro_init_stacks (pTHX)
441{ 642{
442 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 643 PL_curstackinfo = new_stackinfo(32, 8);
443 PL_curstackinfo->si_type = PERLSI_MAIN; 644 PL_curstackinfo->si_type = PERLSI_MAIN;
444 PL_curstack = PL_curstackinfo->si_stack; 645 PL_curstack = PL_curstackinfo->si_stack;
445 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 646 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446 647
447 PL_stack_base = AvARRAY(PL_curstack); 648 PL_stack_base = AvARRAY(PL_curstack);
448 PL_stack_sp = PL_stack_base; 649 PL_stack_sp = PL_stack_base;
449 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 650 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450 651
451 New(50,PL_tmps_stack,128,SV*); 652 New(50,PL_tmps_stack,32,SV*);
452 PL_tmps_floor = -1; 653 PL_tmps_floor = -1;
453 PL_tmps_ix = -1; 654 PL_tmps_ix = -1;
454 PL_tmps_max = 128; 655 PL_tmps_max = 32;
455 656
456 New(54,PL_markstack,32,I32); 657 New(54,PL_markstack,16,I32);
457 PL_markstack_ptr = PL_markstack; 658 PL_markstack_ptr = PL_markstack;
458 PL_markstack_max = PL_markstack + 32; 659 PL_markstack_max = PL_markstack + 16;
459 660
460#ifdef SET_MARK_OFFSET 661#ifdef SET_MARK_OFFSET
461 SET_MARK_OFFSET; 662 SET_MARK_OFFSET;
462#endif 663#endif
463 664
464 New(54,PL_scopestack,32,I32); 665 New(54,PL_scopestack,8,I32);
465 PL_scopestack_ix = 0; 666 PL_scopestack_ix = 0;
466 PL_scopestack_max = 32; 667 PL_scopestack_max = 8;
467 668
468 New(54,PL_savestack,64,ANY); 669 New(54,PL_savestack,24,ANY);
469 PL_savestack_ix = 0; 670 PL_savestack_ix = 0;
470 PL_savestack_max = 64; 671 PL_savestack_max = 24;
471 672
472#if !PERL_VERSION_ATLEAST (5,9,0) 673#if !PERL_VERSION_ATLEAST (5,10,0)
473 New(54,PL_retstack,16,OP*); 674 New(54,PL_retstack,4,OP*);
474 PL_retstack_ix = 0; 675 PL_retstack_ix = 0;
475 PL_retstack_max = 16; 676 PL_retstack_max = 4;
476#endif 677#endif
477} 678}
478#endif 679#endif
479 680
480/* 681/*
481 * destroy the stacks, the callchain etc... 682 * destroy the stacks, the callchain etc...
482 */ 683 */
483static void 684static void
484coro_destroy_stacks () 685coro_destruct_stacks (pTHX)
485{ 686{
486 if (!IN_DESTRUCT)
487 {
488 /* restore all saved variables and stuff */
489 LEAVE_SCOPE (0);
490 assert (PL_tmps_floor == -1);
491
492 /* free all temporaries */
493 FREETMPS;
494 assert (PL_tmps_ix == -1);
495
496 /* unwind all extra stacks */
497 POPSTACK_TO (PL_mainstack);
498
499 /* unwind main stack */
500 dounwind (-1);
501 }
502
503 while (PL_curstackinfo->si_next) 687 while (PL_curstackinfo->si_next)
504 PL_curstackinfo = PL_curstackinfo->si_next; 688 PL_curstackinfo = PL_curstackinfo->si_next;
505 689
506 while (PL_curstackinfo) 690 while (PL_curstackinfo)
507 { 691 {
… …
517 701
518 Safefree (PL_tmps_stack); 702 Safefree (PL_tmps_stack);
519 Safefree (PL_markstack); 703 Safefree (PL_markstack);
520 Safefree (PL_scopestack); 704 Safefree (PL_scopestack);
521 Safefree (PL_savestack); 705 Safefree (PL_savestack);
522#if !PERL_VERSION_ATLEAST (5,9,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
523 Safefree (PL_retstack); 707 Safefree (PL_retstack);
524#endif 708#endif
525} 709}
526 710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
719
720static size_t
721coro_rss (pTHX_ struct coro *coro)
722{
723 size_t rss = sizeof (*coro);
724
725 if (coro->mainstack)
726 {
727 if (coro->flags & CF_RUNNING)
728 {
729 #define SYM(sym) PL_ ## sym
730 CORO_RSS;
731 #undef SYM
732 }
733 else
734 {
735 #define SYM(sym) coro->slot->sym
736 CORO_RSS;
737 #undef SYM
738 }
739 }
740
741 return rss;
742}
743
527/** coroutine stack handling ************************************************/ 744/** coroutine stack handling ************************************************/
528 745
746static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
747static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
748static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
749
750/* apparently < 5.8.8 */
751#ifndef MgPV_nolen_const
752#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
753 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
754 (const char*)(mg)->mg_ptr)
755#endif
756
757/*
758 * This overrides the default magic get method of %SIG elements.
759 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
760 * and instead of tryign to save and restore the hash elements, we just provide
761 * readback here.
762 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
763 * not expecting this to actually change the hook. This is a potential problem
764 * when a schedule happens then, but we ignore this.
765 */
529static void 766static int
530setup_coro (struct coro *coro) 767coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
768{
769 const char *s = MgPV_nolen_const (mg);
770
771 if (*s == '_')
772 {
773 SV **svp = 0;
774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
781 return 0;
782 }
783 }
784
785 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
786}
787
788static int
789coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
790{
791 const char *s = MgPV_nolen_const (mg);
792
793 if (*s == '_')
794 {
795 SV **svp = 0;
796
797 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799
800 if (svp)
801 {
802 SV *old = *svp;
803 *svp = 0;
804 SvREFCNT_dec (old);
805 return 0;
806 }
807 }
808
809 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
810}
811
812static int
813coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
814{
815 const char *s = MgPV_nolen_const (mg);
816
817 if (*s == '_')
818 {
819 SV **svp = 0;
820
821 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
822 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
823
824 if (svp)
825 {
826 SV *old = *svp;
827 *svp = newSVsv (sv);
828 SvREFCNT_dec (old);
829 return 0;
830 }
831 }
832
833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
834}
835
836static void
837prepare_nop (pTHX_ struct coro_transfer_args *ta)
838{
839 /* kind of mega-hacky, but works */
840 ta->next = ta->prev = (struct coro *)ta;
841}
842
843static int
844slf_check_nop (pTHX_ struct CoroSLF *frame)
845{
846 return 0;
847}
848
849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
858coro_setup (pTHX_ struct coro *coro)
531{ 859{
532 /* 860 /*
533 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
534 */ 862 */
535
536 coro_init_stacks (); 863 coro_init_stacks (aTHX);
537 864
865 PL_runops = RUNOPS_DEFAULT;
538 PL_curcop = &PL_compiling; 866 PL_curcop = &PL_compiling;
539 PL_in_eval = EVAL_NULL; 867 PL_in_eval = EVAL_NULL;
868 PL_comppad = 0;
540 PL_curpm = 0; 869 PL_curpm = 0;
870 PL_curpad = 0;
541 PL_localizing = 0; 871 PL_localizing = 0;
542 PL_dirty = 0; 872 PL_dirty = 0;
543 PL_restartop = 0; 873 PL_restartop = 0;
874#if PERL_VERSION_ATLEAST (5,10,0)
875 PL_parser = 0;
876#endif
877
878 /* recreate the die/warn hooks */
879 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
880 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
881
882 GvSV (PL_defgv) = newSV (0);
883 GvAV (PL_defgv) = coro->args; coro->args = 0;
884 GvSV (PL_errgv) = newSV (0);
885 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
886 PL_rs = newSVsv (GvSV (irsgv));
887 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
544 888
545 { 889 {
546 dSP; 890 dSP;
547 LOGOP myop; 891 UNOP myop;
548 892
549 SvREFCNT_dec (GvAV (PL_defgv));
550 GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552 Zero (&myop, 1, LOGOP); 893 Zero (&myop, 1, UNOP);
553 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
554 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
555 897
556 PUSHMARK (SP); 898 PUSHMARK (SP);
557 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 899 PUSHs ((SV *)coro->startcv);
558 PUTBACK; 900 PUTBACK;
559 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
560 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561 SPAGAIN;
562 } 903 }
563 904
564 ENTER; /* necessary e.g. for dounwind */ 905 /* this newly created coroutine might be run on an existing cctx which most
565} 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
907 */
908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
566 910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
921}
922
567static void 923static void
924coro_destruct (pTHX_ struct coro *coro)
925{
926 if (!IN_DESTRUCT)
927 {
928 /* restore all saved variables and stuff */
929 LEAVE_SCOPE (0);
930 assert (PL_tmps_floor == -1);
931
932 /* free all temporaries */
933 FREETMPS;
934 assert (PL_tmps_ix == -1);
935
936 /* unwind all extra stacks */
937 POPSTACK_TO (PL_mainstack);
938
939 /* unwind main stack */
940 dounwind (-1);
941 }
942
943 SvREFCNT_dec (GvSV (PL_defgv));
944 SvREFCNT_dec (GvAV (PL_defgv));
945 SvREFCNT_dec (GvSV (PL_errgv));
946 SvREFCNT_dec (PL_defoutgv);
947 SvREFCNT_dec (PL_rs);
948 SvREFCNT_dec (GvSV (irsgv));
949
950 SvREFCNT_dec (PL_diehook);
951 SvREFCNT_dec (PL_warnhook);
952
953 SvREFCNT_dec (coro->saved_deffh);
954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
957
958 coro_destruct_stacks (aTHX);
959}
960
961INLINE void
568free_coro_mortal () 962free_coro_mortal (pTHX)
569{ 963{
570 if (coro_mortal) 964 if (expect_true (coro_mortal))
571 { 965 {
572 SvREFCNT_dec (coro_mortal); 966 SvREFCNT_dec (coro_mortal);
573 coro_mortal = 0; 967 coro_mortal = 0;
574 } 968 }
575} 969}
576 970
577/* inject a fake call to Coro::State::_cctx_init into the execution */ 971static int
972runops_trace (pTHX)
973{
974 COP *oldcop = 0;
975 int oldcxix = -2;
976
977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
978 {
979 PERL_ASYNC_CHECK ();
980
981 if (cctx_current->flags & CC_TRACE_ALL)
982 {
983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
984 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 SV **bot, **top;
987 AV *av = newAV (); /* return values */
988 SV **cb;
989 dSP;
990
991 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0));
993 if (isGV (gv))
994 gv_efullname3 (fullname, gv, 0);
995
996 bot = PL_stack_base + cx->blk_oldsp + 1;
997 top = cx->blk_gimme == G_ARRAY ? SP + 1
998 : cx->blk_gimme == G_SCALAR ? bot + 1
999 : bot;
1000
1001 av_extend (av, top - bot);
1002 while (bot < top)
1003 av_push (av, SvREFCNT_inc_NN (*bot++));
1004
1005 PL_runops = RUNOPS_DEFAULT;
1006 ENTER;
1007 SAVETMPS;
1008 EXTEND (SP, 3);
1009 PUSHMARK (SP);
1010 PUSHs (&PL_sv_no);
1011 PUSHs (fullname);
1012 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1013 PUTBACK;
1014 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1015 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1016 SPAGAIN;
1017 FREETMPS;
1018 LEAVE;
1019 PL_runops = runops_trace;
1020 }
1021
1022 if (oldcop != PL_curcop)
1023 {
1024 oldcop = PL_curcop;
1025
1026 if (PL_curcop != &PL_compiling)
1027 {
1028 SV **cb;
1029
1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1031 {
1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1033
1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1035 {
1036 dSP;
1037 GV *gv = CvGV (cx->blk_sub.cv);
1038 SV *fullname = sv_2mortal (newSV (0));
1039
1040 if (isGV (gv))
1041 gv_efullname3 (fullname, gv, 0);
1042
1043 PL_runops = RUNOPS_DEFAULT;
1044 ENTER;
1045 SAVETMPS;
1046 EXTEND (SP, 3);
1047 PUSHMARK (SP);
1048 PUSHs (&PL_sv_yes);
1049 PUSHs (fullname);
1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1051 PUTBACK;
1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1054 SPAGAIN;
1055 FREETMPS;
1056 LEAVE;
1057 PL_runops = runops_trace;
1058 }
1059
1060 oldcxix = cxstack_ix;
1061 }
1062
1063 if (cctx_current->flags & CC_TRACE_LINE)
1064 {
1065 dSP;
1066
1067 PL_runops = RUNOPS_DEFAULT;
1068 ENTER;
1069 SAVETMPS;
1070 EXTEND (SP, 3);
1071 PL_runops = RUNOPS_DEFAULT;
1072 PUSHMARK (SP);
1073 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1074 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1075 PUTBACK;
1076 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1077 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1078 SPAGAIN;
1079 FREETMPS;
1080 LEAVE;
1081 PL_runops = runops_trace;
1082 }
1083 }
1084 }
1085 }
1086 }
1087
1088 TAINT_NOT;
1089 return 0;
1090}
1091
1092static struct CoroSLF cctx_ssl_frame;
1093
1094static void
1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1096{
1097 ta->prev = 0;
1098}
1099
1100static int
1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1102{
1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
578static void NOINLINE 1109static void NOINLINE
579prepare_cctx (coro_cctx *cctx) 1110cctx_prepare (pTHX)
580{ 1111{
581 dSP;
582 LOGOP myop;
583
584 Zero (&myop, 1, LOGOP);
585 myop.op_next = PL_op;
586 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
587
588 PUSHMARK (SP);
589 EXTEND (SP, 2);
590 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
591 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
592 PUTBACK;
593 PL_op = (OP *)&myop;
594 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595 SPAGAIN;
596}
597
598static void
599coro_run (void *arg)
600{
601 /* coro_run is the alternative tail of transfer(), so unlock here. */
602 UNLOCK;
603
604 /*
605 * this is a _very_ stripped down perl interpreter ;)
606 */
607 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
608 1113
1114 if (cctx_current->flags & CC_TRACE)
1115 PL_runops = runops_trace;
1116
1117 /* we already must be executing an SLF op, there is no other valid way
1118 * that can lead to creation of a new cctx */
1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1121
1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1123 cctx_ssl_frame = slf_frame;
1124
1125 slf_frame.prepare = slf_prepare_set_stacklevel;
1126 slf_frame.check = slf_check_set_stacklevel;
1127}
1128
1129/* the tail of transfer: execute stuff we can only do after a transfer */
1130INLINE void
1131transfer_tail (pTHX)
1132{
1133 free_coro_mortal (aTHX);
1134}
1135
1136/*
1137 * this is a _very_ stripped down perl interpreter ;)
1138 */
1139static void
1140cctx_run (void *arg)
1141{
1142#ifdef USE_ITHREADS
1143# if CORO_PTHREAD
1144 PERL_SET_CONTEXT (coro_thx);
1145# endif
1146#endif
1147 {
1148 dTHX;
1149
1150 /* normally we would need to skip the entersub here */
1151 /* not doing so will re-execute it, which is exactly what we want */
1152 /* PL_nop = PL_nop->op_next */
1153
609 /* inject call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
610 prepare_cctx ((coro_cctx *)arg); 1155 cctx_prepare (aTHX);
611 1156
1157 /* cctx_run is the alternative tail of transfer() */
1158 transfer_tail (aTHX);
1159
612 /* somebody will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
613 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
614 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
615 1167
616 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1168 /*
617 abort (); 1169 * If perl-run returns we assume exit() was being called or the coro
1170 * fell off the end, which seems to be the only valid (non-bug)
1171 * reason for perl_run to return. We try to exit by jumping to the
1172 * bootstrap-time "top" top_env, as we cannot restore the "main"
1173 * coroutine as Coro has no such concept
1174 */
1175 PL_top_env = main_top_env;
1176 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1177 }
618} 1178}
619 1179
620static coro_cctx * 1180static coro_cctx *
621cctx_new () 1181cctx_new ()
622{ 1182{
623 coro_cctx *cctx; 1183 coro_cctx *cctx;
624 1184
625 ++cctx_count; 1185 ++cctx_count;
626
627 Newz (0, cctx, 1, coro_cctx); 1186 New (0, cctx, 1, coro_cctx);
1187
1188 cctx->gen = cctx_gen;
1189 cctx->flags = 0;
1190 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1191
1192 return cctx;
1193}
1194
1195/* create a new cctx only suitable as source */
1196static coro_cctx *
1197cctx_new_empty ()
1198{
1199 coro_cctx *cctx = cctx_new ();
1200
1201 cctx->sptr = 0;
1202 coro_create (&cctx->cctx, 0, 0, 0, 0);
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx suitable as destination/running a perl interpreter */
1208static coro_cctx *
1209cctx_new_run ()
1210{
1211 coro_cctx *cctx = cctx_new ();
1212 void *stack_start;
1213 size_t stack_size;
628 1214
629#if HAVE_MMAP 1215#if HAVE_MMAP
630
631 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1216 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632 /* mmap supposedly does allocate-on-write for us */ 1217 /* mmap supposedly does allocate-on-write for us */
633 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1218 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
634 1219
635 if (cctx->sptr == (void *)-1) 1220 if (cctx->sptr != (void *)-1)
1221 {
1222 #if CORO_STACKGUARD
1223 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1224 #endif
1225 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1226 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1227 cctx->flags |= CC_MAPPED;
636 { 1228 }
1229 else
1230#endif
1231 {
1232 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1233 New (0, cctx->sptr, cctx_stacksize, long);
1234
1235 if (!cctx->sptr)
1236 {
637 perror ("FATAL: unable to mmap stack for coroutine"); 1237 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
638 _exit (EXIT_FAILURE); 1238 _exit (EXIT_FAILURE);
639 } 1239 }
640 1240
641# if STACKGUARD 1241 stack_start = cctx->sptr;
642 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1242 stack_size = cctx->ssize;
643# endif
644
645#else
646
647 cctx->ssize = STACKSIZE * (long)sizeof (long);
648 New (0, cctx->sptr, STACKSIZE, long);
649
650 if (!cctx->sptr)
651 { 1243 }
652 perror ("FATAL: unable to malloc stack for coroutine");
653 _exit (EXIT_FAILURE);
654 }
655 1244
1245 #if CORO_USE_VALGRIND
1246 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
656#endif 1247 #endif
657 1248
658#if USE_VALGRIND 1249 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
659 cctx->valgrind_id = VALGRIND_STACK_REGISTER (
660 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
661 cctx->ssize + (char *)cctx->sptr
662 );
663#endif
664
665 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
666 1250
667 return cctx; 1251 return cctx;
668} 1252}
669 1253
670static void 1254static void
671cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
672{ 1256{
673 if (!cctx) 1257 if (!cctx)
674 return; 1258 return;
675 1259
1260 assert (cctx != cctx_current);//D temporary
1261
676 --cctx_count; 1262 --cctx_count;
1263 coro_destroy (&cctx->cctx);
677 1264
678#if USE_VALGRIND 1265 /* coro_transfer creates new, empty cctx's */
1266 if (cctx->sptr)
1267 {
1268 #if CORO_USE_VALGRIND
679 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1269 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680#endif 1270 #endif
681 1271
682#if HAVE_MMAP 1272#if HAVE_MMAP
1273 if (cctx->flags & CC_MAPPED)
683 munmap (cctx->sptr, cctx->ssize); 1274 munmap (cctx->sptr, cctx->ssize);
684#else 1275 else
1276#endif
685 Safefree (cctx->sptr); 1277 Safefree (cctx->sptr);
686#endif 1278 }
687 1279
688 Safefree (cctx); 1280 Safefree (cctx);
689} 1281}
690 1282
1283/* wether this cctx should be destructed */
1284#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1285
691static coro_cctx * 1286static coro_cctx *
692cctx_get () 1287cctx_get (pTHX)
693{ 1288{
694 coro_cctx *cctx; 1289 while (expect_true (cctx_first))
695
696 if (cctx_first)
697 { 1290 {
698 cctx = cctx_first; 1291 coro_cctx *cctx = cctx_first;
699 cctx_first = cctx->next; 1292 cctx_first = cctx->next;
700 --cctx_idle; 1293 --cctx_idle;
701 } 1294
702 else 1295 if (expect_true (!CCTX_EXPIRED (cctx)))
703 { 1296 return cctx;
704 cctx = cctx_new (); 1297
705 PL_op = PL_op->op_next; 1298 cctx_destroy (cctx);
706 } 1299 }
707 1300
708 return cctx; 1301 return cctx_new_run ();
709} 1302}
710 1303
711static void 1304static void
712cctx_put (coro_cctx *cctx) 1305cctx_put (coro_cctx *cctx)
713{ 1306{
1307 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1308
714 /* free another cctx if overlimit */ 1309 /* free another cctx if overlimit */
715 if (cctx_idle >= MAX_IDLE_CCTX) 1310 if (expect_false (cctx_idle >= cctx_max_idle))
716 { 1311 {
717 coro_cctx *first = cctx_first; 1312 coro_cctx *first = cctx_first;
718 cctx_first = first->next; 1313 cctx_first = first->next;
719 --cctx_idle; 1314 --cctx_idle;
720 1315
721 assert (!first->inuse);
722 cctx_destroy (first); 1316 cctx_destroy (first);
723 } 1317 }
724 1318
725 ++cctx_idle; 1319 ++cctx_idle;
726 cctx->next = cctx_first; 1320 cctx->next = cctx_first;
727 cctx_first = cctx; 1321 cctx_first = cctx;
728} 1322}
729 1323
730/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
731 1325
732/* never call directly, always through the coro_state_transfer global variable */ 1326static void
733static void NOINLINE
734transfer (struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1331 if (expect_true (prev != next))
1332 {
1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1334 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1335
1336 if (expect_false (next->flags & CF_RUNNING))
1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1338
1339 if (expect_false (next->flags & CF_DESTROYED))
1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1341
1342#if !PERL_VERSION_ATLEAST (5,10,0)
1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1345#endif
1346 }
1347}
1348
1349/* always use the TRANSFER macro */
1350static void NOINLINE /* noinline so we have a fixed stackframe */
1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
735{ 1352{
736 dSTACKLEVEL; 1353 dSTACKLEVEL;
737 1354
738 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
739 if (!next) 1356 if (expect_false (!prev))
740 { 1357 {
741 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
742 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
743 }
744 else if (prev != next)
745 { 1360 }
1361 else if (expect_true (prev != next))
1362 {
746 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
747 1364
748 if (prev->flags & CF_NEW) 1365 if (expect_false (prev->flags & CF_NEW))
749 { 1366 {
750 /* create a new empty context */ 1367 /* create a new empty/source context */
751 Newz (0, prev->cctx, 1, coro_cctx);
752 prev->cctx->inuse = 1;
753 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
754 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
755 } 1370 }
756 1371
757 /*TODO: must not croak here */
758 if (!prev->flags & CF_RUNNING)
759 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
760
761 if (next->flags & CF_RUNNING)
762 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
763
764 if (next->flags & CF_DESTROYED)
765 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
766
767 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
768 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
769 1374
770 LOCK; 1375 /* first get rid of the old state */
1376 save_perl (aTHX_ prev);
771 1377
772 if (next->flags & CF_NEW) 1378 if (expect_false (next->flags & CF_NEW))
773 { 1379 {
774 /* need to start coroutine */ 1380 /* need to start coroutine */
775 next->flags &= ~CF_NEW; 1381 next->flags &= ~CF_NEW;
776 /* first get rid of the old state */
777 save_perl (prev);
778 /* setup coroutine call */ 1382 /* setup coroutine call */
779 setup_coro (next); 1383 coro_setup (aTHX_ next);
780 /* need a new stack */
781 assert (!next->cctx);
782 } 1384 }
783 else 1385 else
1386 load_perl (aTHX_ next);
1387
1388 /* possibly untie and reuse the cctx */
1389 if (expect_true (
1390 cctx_current->idle_sp == STACKLEVEL
1391 && !(cctx_current->flags & CC_TRACE)
1392 && !force_cctx
1393 ))
784 { 1394 {
785 /* coroutine already started */ 1395 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
786 save_perl (prev); 1396 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
787 load_perl (next); 1397
1398 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1399 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1400 if (expect_false (CCTX_EXPIRED (cctx_current)))
1401 if (!next->cctx)
1402 next->cctx = cctx_get (aTHX);
1403
1404 cctx_put (cctx_current);
1405 assert (!prev->cctx);//D temporary
788 } 1406 }
1407 else
1408 prev->cctx = cctx_current;
789 1409
790 prev__cctx = prev->cctx; 1410 ++next->usecount;
791 1411
792 /* possibly "free" the cctx */ 1412 cctx_prev = cctx_current;
793 if (prev__cctx->idle_sp == STACKLEVEL) 1413 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1414
1415 next->cctx = 0;
1416
1417 if (expect_false (cctx_prev != cctx_current))
794 { 1418 {
795 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1419 cctx_prev->top_env = PL_top_env;
796 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1420 PL_top_env = cctx_current->top_env;
797 1421 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
798 prev->cctx = 0;
799
800 cctx_put (prev__cctx);
801 prev__cctx->inuse = 0;
802 } 1422 }
803 1423
804 if (!next->cctx) 1424 transfer_tail (aTHX);
805 {
806 next->cctx = cctx_get ();
807 assert (!next->cctx->inuse);
808 next->cctx->inuse = 1;
809 }
810
811 if (prev__cctx != next->cctx)
812 {
813 prev__cctx->top_env = PL_top_env;
814 PL_top_env = next->cctx->top_env;
815 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816 }
817
818 free_coro_mortal ();
819 UNLOCK;
820 } 1425 }
821} 1426}
822 1427
823struct transfer_args 1428#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
824{
825 struct coro *prev, *next;
826};
827
828#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1429#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829 1430
830/** high level stuff ********************************************************/ 1431/** high level stuff ********************************************************/
831 1432
832static int 1433static int
833coro_state_destroy (struct coro *coro) 1434coro_state_destroy (pTHX_ struct coro *coro)
834{ 1435{
835 if (coro->flags & CF_DESTROYED) 1436 if (coro->flags & CF_DESTROYED)
836 return 0; 1437 return 0;
1438
1439 if (coro->on_destroy)
1440 coro->on_destroy (aTHX_ coro);
837 1441
838 coro->flags |= CF_DESTROYED; 1442 coro->flags |= CF_DESTROYED;
839 1443
840 if (coro->flags & CF_READY) 1444 if (coro->flags & CF_READY)
841 { 1445 {
842 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1446 /* reduce nready, as destroying a ready coro effectively unreadies it */
843 /* alternative: look through all ready queues and remove the coro */ 1447 /* alternative: look through all ready queues and remove the coro */
844 LOCK;
845 --coro_nready; 1448 --coro_nready;
846 UNLOCK;
847 } 1449 }
848 else 1450 else
849 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1451 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
850 1452
851 if (coro->mainstack && coro->mainstack != main_mainstack) 1453 if (coro->mainstack && coro->mainstack != main_mainstack)
852 { 1454 {
853 struct coro temp; 1455 struct coro temp;
854 1456
855 assert (!(coro->flags & CF_RUNNING)); 1457 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
856 1458
857 Zero (&temp, 1, struct coro);
858 temp.save = CORO_SAVE_ALL;
859
860 if (coro->flags & CF_RUNNING)
861 croak ("FATAL: tried to destroy currently running coroutine");
862
863 save_perl (&temp); 1459 save_perl (aTHX_ &temp);
864 load_perl (coro); 1460 load_perl (aTHX_ coro);
865 1461
866 coro_destroy_stacks (); 1462 coro_destruct (aTHX_ coro);
867 1463
868 load_perl (&temp); /* this will get rid of defsv etc.. */ 1464 load_perl (aTHX_ &temp);
869 1465
870 coro->mainstack = 0; 1466 coro->slot = 0;
871 } 1467 }
872 1468
873 cctx_destroy (coro->cctx); 1469 cctx_destroy (coro->cctx);
1470 SvREFCNT_dec (coro->startcv);
874 SvREFCNT_dec (coro->args); 1471 SvREFCNT_dec (coro->args);
1472 SvREFCNT_dec (CORO_THROW);
1473
1474 if (coro->next) coro->next->prev = coro->prev;
1475 if (coro->prev) coro->prev->next = coro->next;
1476 if (coro == coro_first) coro_first = coro->next;
875 1477
876 return 1; 1478 return 1;
877} 1479}
878 1480
879static int 1481static int
880coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1482coro_state_free (pTHX_ SV *sv, MAGIC *mg)
881{ 1483{
882 struct coro *coro = (struct coro *)mg->mg_ptr; 1484 struct coro *coro = (struct coro *)mg->mg_ptr;
883 mg->mg_ptr = 0; 1485 mg->mg_ptr = 0;
884 1486
1487 coro->hv = 0;
1488
885 if (--coro->refcnt < 0) 1489 if (--coro->refcnt < 0)
886 { 1490 {
887 coro_state_destroy (coro); 1491 coro_state_destroy (aTHX_ coro);
888 Safefree (coro); 1492 Safefree (coro);
889 } 1493 }
890 1494
891 return 0; 1495 return 0;
892} 1496}
… …
910#else 1514#else
911# define MGf_DUP 0 1515# define MGf_DUP 0
912#endif 1516#endif
913}; 1517};
914 1518
915static struct coro *
916SvSTATE (SV *coro)
917{
918 HV *stash;
919 MAGIC *mg;
920
921 if (SvROK (coro))
922 coro = SvRV (coro);
923
924 stash = SvSTASH (coro);
925 if (stash != coro_stash && stash != coro_state_stash)
926 {
927 /* very slow, but rare, check */
928 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
929 croak ("Coro::State object required");
930 }
931
932 mg = SvMAGIC (coro);
933 assert (mg->mg_type == PERL_MAGIC_ext);
934 return (struct coro *)mg->mg_ptr;
935}
936
937static void 1519static void
938prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1520prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
939{ 1521{
940 ta->prev = SvSTATE (prev_sv); 1522 ta->prev = SvSTATE (prev_sv);
941 ta->next = SvSTATE (next_sv); 1523 ta->next = SvSTATE (next_sv);
1524 TRANSFER_CHECK (*ta);
942} 1525}
943 1526
944static void 1527static void
945api_transfer (SV *prev_sv, SV *next_sv) 1528api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
946{ 1529{
947 struct transfer_args ta; 1530 struct coro_transfer_args ta;
948 1531
949 prepare_transfer (&ta, prev_sv, next_sv); 1532 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
950 TRANSFER (ta); 1533 TRANSFER (ta, 1);
951} 1534}
952 1535
953static int 1536/*****************************************************************************/
954api_save (SV *coro_sv, int new_save) 1537/* gensub: simple closure generation utility */
955{
956 struct coro *coro = SvSTATE (coro_sv);
957 int old_save = coro->save;
958 1538
959 if (new_save >= 0) 1539#define GENSUB_ARG CvXSUBANY (cv).any_ptr
960 coro->save = new_save;
961 1540
962 return old_save; 1541/* create a closure from XS, returns a code reference */
1542/* the arg can be accessed via GENSUB_ARG from the callback */
1543/* the callback must use dXSARGS/XSRETURN */
1544static SV *
1545gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1546{
1547 CV *cv = (CV *)newSV (0);
1548
1549 sv_upgrade ((SV *)cv, SVt_PVCV);
1550
1551 CvANON_on (cv);
1552 CvISXSUB_on (cv);
1553 CvXSUB (cv) = xsub;
1554 GENSUB_ARG = arg;
1555
1556 return newRV_noinc ((SV *)cv);
963} 1557}
964 1558
965/** Coro ********************************************************************/ 1559/** Coro ********************************************************************/
966 1560
967static void 1561INLINE void
968coro_enq (SV *coro_sv) 1562coro_enq (pTHX_ struct coro *coro)
969{ 1563{
970 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1564 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
971} 1565}
972 1566
973static SV * 1567INLINE SV *
974coro_deq (int min_prio) 1568coro_deq (pTHX)
975{ 1569{
976 int prio = PRIO_MAX - PRIO_MIN; 1570 int prio;
977 1571
978 min_prio -= PRIO_MIN;
979 if (min_prio < 0)
980 min_prio = 0;
981
982 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1572 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
983 if (AvFILLp (coro_ready [prio]) >= 0) 1573 if (AvFILLp (coro_ready [prio]) >= 0)
984 return av_shift (coro_ready [prio]); 1574 return av_shift (coro_ready [prio]);
985 1575
986 return 0; 1576 return 0;
987} 1577}
988 1578
989static int 1579static int
990api_ready (SV *coro_sv) 1580api_ready (pTHX_ SV *coro_sv)
991{ 1581{
992 struct coro *coro; 1582 struct coro *coro;
1583 SV *sv_hook;
1584 void (*xs_hook)(void);
993 1585
994 if (SvROK (coro_sv)) 1586 if (SvROK (coro_sv))
995 coro_sv = SvRV (coro_sv); 1587 coro_sv = SvRV (coro_sv);
996 1588
997 coro = SvSTATE (coro_sv); 1589 coro = SvSTATE (coro_sv);
… …
999 if (coro->flags & CF_READY) 1591 if (coro->flags & CF_READY)
1000 return 0; 1592 return 0;
1001 1593
1002 coro->flags |= CF_READY; 1594 coro->flags |= CF_READY;
1003 1595
1004 LOCK; 1596 sv_hook = coro_nready ? 0 : coro_readyhook;
1005 coro_enq (SvREFCNT_inc (coro_sv)); 1597 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1598
1599 coro_enq (aTHX_ coro);
1006 ++coro_nready; 1600 ++coro_nready;
1007 UNLOCK; 1601
1602 if (sv_hook)
1603 {
1604 dSP;
1605
1606 ENTER;
1607 SAVETMPS;
1608
1609 PUSHMARK (SP);
1610 PUTBACK;
1611 call_sv (sv_hook, G_VOID | G_DISCARD);
1612
1613 FREETMPS;
1614 LEAVE;
1615 }
1616
1617 if (xs_hook)
1618 xs_hook ();
1008 1619
1009 return 1; 1620 return 1;
1010} 1621}
1011 1622
1012static int 1623static int
1013api_is_ready (SV *coro_sv) 1624api_is_ready (pTHX_ SV *coro_sv)
1014{ 1625{
1015 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1626 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1016} 1627}
1017 1628
1629/* expects to own a reference to next->hv */
1630INLINE void
1631prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1632{
1633 SV *prev_sv = SvRV (coro_current);
1634
1635 ta->prev = SvSTATE_hv (prev_sv);
1636 ta->next = next;
1637
1638 TRANSFER_CHECK (*ta);
1639
1640 SvRV_set (coro_current, (SV *)next->hv);
1641
1642 free_coro_mortal (aTHX);
1643 coro_mortal = prev_sv;
1644}
1645
1018static void 1646static void
1019prepare_schedule (struct transfer_args *ta) 1647prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1020{ 1648{
1021 SV *prev_sv, *next_sv;
1022
1023 for (;;) 1649 for (;;)
1024 { 1650 {
1025 LOCK;
1026 next_sv = coro_deq (PRIO_MIN); 1651 SV *next_sv = coro_deq (aTHX);
1027 1652
1653 if (expect_true (next_sv))
1654 {
1655 struct coro *next = SvSTATE_hv (next_sv);
1656
1657 /* cannot transfer to destroyed coros, skip and look for next */
1658 if (expect_false (next->flags & CF_DESTROYED))
1659 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1660 else
1661 {
1662 next->flags &= ~CF_READY;
1663 --coro_nready;
1664
1665 prepare_schedule_to (aTHX_ ta, next);
1666 break;
1667 }
1668 }
1669 else
1670 {
1028 /* nothing to schedule: call the idle handler */ 1671 /* nothing to schedule: call the idle handler */
1029 if (!next_sv) 1672 dSP;
1673
1674 ENTER;
1675 SAVETMPS;
1676
1677 PUSHMARK (SP);
1678 PUTBACK;
1679 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1680
1681 FREETMPS;
1682 LEAVE;
1683 }
1684 }
1685}
1686
1687INLINE void
1688prepare_cede (pTHX_ struct coro_transfer_args *ta)
1689{
1690 api_ready (aTHX_ coro_current);
1691 prepare_schedule (aTHX_ ta);
1692}
1693
1694INLINE void
1695prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1696{
1697 SV *prev = SvRV (coro_current);
1698
1699 if (coro_nready)
1700 {
1701 prepare_schedule (aTHX_ ta);
1702 api_ready (aTHX_ prev);
1703 }
1704 else
1705 prepare_nop (aTHX_ ta);
1706}
1707
1708static void
1709api_schedule (pTHX)
1710{
1711 struct coro_transfer_args ta;
1712
1713 prepare_schedule (aTHX_ &ta);
1714 TRANSFER (ta, 1);
1715}
1716
1717static void
1718api_schedule_to (pTHX_ SV *coro_sv)
1719{
1720 struct coro_transfer_args ta;
1721 struct coro *next = SvSTATE (coro_sv);
1722
1723 SvREFCNT_inc_NN (coro_sv);
1724 prepare_schedule_to (aTHX_ &ta, next);
1725}
1726
1727static int
1728api_cede (pTHX)
1729{
1730 struct coro_transfer_args ta;
1731
1732 prepare_cede (aTHX_ &ta);
1733
1734 if (expect_true (ta.prev != ta.next))
1735 {
1736 TRANSFER (ta, 1);
1737 return 1;
1738 }
1739 else
1740 return 0;
1741}
1742
1743static int
1744api_cede_notself (pTHX)
1745{
1746 if (coro_nready)
1747 {
1748 struct coro_transfer_args ta;
1749
1750 prepare_cede_notself (aTHX_ &ta);
1751 TRANSFER (ta, 1);
1752 return 1;
1753 }
1754 else
1755 return 0;
1756}
1757
1758static void
1759api_trace (pTHX_ SV *coro_sv, int flags)
1760{
1761 struct coro *coro = SvSTATE (coro_sv);
1762
1763 if (flags & CC_TRACE)
1764 {
1765 if (!coro->cctx)
1766 coro->cctx = cctx_new_run ();
1767 else if (!(coro->cctx->flags & CC_TRACE))
1768 croak ("cannot enable tracing on coroutine with custom stack,");
1769
1770 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1771 }
1772 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1773 {
1774 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1775
1776 if (coro->flags & CF_RUNNING)
1777 PL_runops = RUNOPS_DEFAULT;
1778 else
1779 coro->slot->runops = RUNOPS_DEFAULT;
1780 }
1781}
1782
1783static void
1784coro_call_on_destroy (pTHX_ struct coro *coro)
1785{
1786 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1787 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1788
1789 if (on_destroyp)
1790 {
1791 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1792
1793 while (AvFILLp (on_destroy) >= 0)
1794 {
1795 dSP; /* don't disturb outer sp */
1796 SV *cb = av_pop (on_destroy);
1797
1798 PUSHMARK (SP);
1799
1800 if (statusp)
1801 {
1802 int i;
1803 AV *status = (AV *)SvRV (*statusp);
1804 EXTEND (SP, AvFILLp (status) + 1);
1805
1806 for (i = 0; i <= AvFILLp (status); ++i)
1807 PUSHs (AvARRAY (status)[i]);
1808 }
1809
1810 PUTBACK;
1811 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1812 }
1813 }
1814}
1815
1816static void
1817slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1818{
1819 int i;
1820 HV *hv = (HV *)SvRV (coro_current);
1821 AV *av = newAV ();
1822
1823 av_extend (av, items - 1);
1824 for (i = 0; i < items; ++i)
1825 av_push (av, SvREFCNT_inc_NN (arg [i]));
1826
1827 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1828
1829 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1830 api_ready (aTHX_ sv_manager);
1831
1832 frame->prepare = prepare_schedule;
1833 frame->check = slf_check_repeat;
1834}
1835
1836/*****************************************************************************/
1837/* async pool handler */
1838
1839static int
1840slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1841{
1842 HV *hv = (HV *)SvRV (coro_current);
1843 struct coro *coro = (struct coro *)frame->data;
1844
1845 if (!coro->invoke_cb)
1846 return 1; /* loop till we have invoke */
1847 else
1848 {
1849 hv_store (hv, "desc", sizeof ("desc") - 1,
1850 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1851
1852 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1853
1854 {
1855 dSP;
1856 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1857 PUTBACK;
1858 }
1859
1860 SvREFCNT_dec (GvAV (PL_defgv));
1861 GvAV (PL_defgv) = coro->invoke_av;
1862 coro->invoke_av = 0;
1863
1864 return 0;
1865 }
1866}
1867
1868static void
1869slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1870{
1871 HV *hv = (HV *)SvRV (coro_current);
1872 struct coro *coro = SvSTATE_hv ((SV *)hv);
1873
1874 if (expect_true (coro->saved_deffh))
1875 {
1876 /* subsequent iteration */
1877 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1878 coro->saved_deffh = 0;
1879
1880 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1881 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1882 {
1883 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1884 coro->invoke_av = newAV ();
1885
1886 frame->prepare = prepare_nop;
1887 }
1888 else
1889 {
1890 av_clear (GvAV (PL_defgv));
1891 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1892
1893 coro->prio = 0;
1894
1895 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1896 api_trace (aTHX_ coro_current, 0);
1897
1898 frame->prepare = prepare_schedule;
1899 av_push (av_async_pool, SvREFCNT_inc (hv));
1900 }
1901 }
1902 else
1903 {
1904 /* first iteration, simply fall through */
1905 frame->prepare = prepare_nop;
1906 }
1907
1908 frame->check = slf_check_pool_handler;
1909 frame->data = (void *)coro;
1910}
1911
1912/*****************************************************************************/
1913/* rouse callback */
1914
1915#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1916
1917static void
1918coro_rouse_callback (pTHX_ CV *cv)
1919{
1920 dXSARGS;
1921 SV *data = (SV *)GENSUB_ARG;
1922
1923 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1924 {
1925 /* first call, set args */
1926 AV *av = newAV ();
1927 SV *coro = SvRV (data);
1928
1929 SvRV_set (data, (SV *)av);
1930 api_ready (aTHX_ coro);
1931 SvREFCNT_dec (coro);
1932
1933 /* better take a full copy of the arguments */
1934 while (items--)
1935 av_store (av, items, newSVsv (ST (items)));
1936 }
1937
1938 XSRETURN_EMPTY;
1939}
1940
1941static int
1942slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1943{
1944 SV *data = (SV *)frame->data;
1945
1946 if (CORO_THROW)
1947 return 0;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 return 1;
1951
1952 /* now push all results on the stack */
1953 {
1954 dSP;
1955 AV *av = (AV *)SvRV (data);
1956 int i;
1957
1958 EXTEND (SP, AvFILLp (av) + 1);
1959 for (i = 0; i <= AvFILLp (av); ++i)
1960 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1961
1962 /* we have stolen the elements, so ste length to zero and free */
1963 AvFILLp (av) = -1;
1964 av_undef (av);
1965
1966 PUTBACK;
1967 }
1968
1969 return 0;
1970}
1971
1972static void
1973slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1974{
1975 SV *cb;
1976
1977 if (items)
1978 cb = arg [0];
1979 else
1980 {
1981 struct coro *coro = SvSTATE_current;
1982
1983 if (!coro->rouse_cb)
1984 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1985
1986 cb = sv_2mortal (coro->rouse_cb);
1987 coro->rouse_cb = 0;
1988 }
1989
1990 if (!SvROK (cb)
1991 || SvTYPE (SvRV (cb)) != SVt_PVCV
1992 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1993 croak ("Coro::rouse_wait called with illegal callback argument,");
1994
1995 {
1996 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1997 SV *data = (SV *)GENSUB_ARG;
1998
1999 frame->data = (void *)data;
2000 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2001 frame->check = slf_check_rouse_wait;
2002 }
2003}
2004
2005static SV *
2006coro_new_rouse_cb (pTHX)
2007{
2008 HV *hv = (HV *)SvRV (coro_current);
2009 struct coro *coro = SvSTATE_hv (hv);
2010 SV *data = newRV_inc ((SV *)hv);
2011 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2012
2013 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2014 SvREFCNT_dec (data); /* magicext increases the refcount */
2015
2016 SvREFCNT_dec (coro->rouse_cb);
2017 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2018
2019 return cb;
2020}
2021
2022/*****************************************************************************/
2023/* schedule-like-function opcode (SLF) */
2024
2025static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2026static const CV *slf_cv;
2027static SV **slf_argv;
2028static int slf_argc, slf_arga; /* count, allocated */
2029static I32 slf_ax; /* top of stack, for restore */
2030
2031/* this restores the stack in the case we patched the entersub, to */
2032/* recreate the stack frame as perl will on following calls */
2033/* since entersub cleared the stack */
2034static OP *
2035pp_restore (pTHX)
2036{
2037 int i;
2038 SV **SP = PL_stack_base + slf_ax;
2039
2040 PUSHMARK (SP);
2041
2042 EXTEND (SP, slf_argc + 1);
2043
2044 for (i = 0; i < slf_argc; ++i)
2045 PUSHs (sv_2mortal (slf_argv [i]));
2046
2047 PUSHs ((SV *)CvGV (slf_cv));
2048
2049 RETURNOP (slf_restore.op_first);
2050}
2051
2052static void
2053slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2054{
2055 SV **arg = (SV **)slf_frame.data;
2056
2057 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2058}
2059
2060static void
2061slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2062{
2063 if (items != 2)
2064 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2065
2066 frame->prepare = slf_prepare_transfer;
2067 frame->check = slf_check_nop;
2068 frame->data = (void *)arg; /* let's hope it will stay valid */
2069}
2070
2071static void
2072slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2073{
2074 frame->prepare = prepare_schedule;
2075 frame->check = slf_check_nop;
2076}
2077
2078static void
2079slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2080{
2081 struct coro *next = (struct coro *)slf_frame.data;
2082
2083 SvREFCNT_inc_NN (next->hv);
2084 prepare_schedule_to (aTHX_ ta, next);
2085}
2086
2087static void
2088slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2089{
2090 if (!items)
2091 croak ("Coro::schedule_to expects a coroutine argument, caught");
2092
2093 frame->data = (void *)SvSTATE (arg [0]);
2094 frame->prepare = slf_prepare_schedule_to;
2095 frame->check = slf_check_nop;
2096}
2097
2098static void
2099slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2100{
2101 api_ready (aTHX_ SvRV (coro_current));
2102
2103 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2104}
2105
2106static void
2107slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2108{
2109 frame->prepare = prepare_cede;
2110 frame->check = slf_check_nop;
2111}
2112
2113static void
2114slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 frame->prepare = prepare_cede_notself;
2117 frame->check = slf_check_nop;
2118}
2119
2120/*
2121 * these not obviously related functions are all rolled into one
2122 * function to increase chances that they all will call transfer with the same
2123 * stack offset
2124 * SLF stands for "schedule-like-function".
2125 */
2126static OP *
2127pp_slf (pTHX)
2128{
2129 I32 checkmark; /* mark SP to see how many elements check has pushed */
2130
2131 /* set up the slf frame, unless it has already been set-up */
2132 /* the latter happens when a new coro has been started */
2133 /* or when a new cctx was attached to an existing coroutine */
2134 if (expect_true (!slf_frame.prepare))
2135 {
2136 /* first iteration */
2137 dSP;
2138 SV **arg = PL_stack_base + TOPMARK + 1;
2139 int items = SP - arg; /* args without function object */
2140 SV *gv = *sp;
2141
2142 /* do a quick consistency check on the "function" object, and if it isn't */
2143 /* for us, divert to the real entersub */
2144 if (SvTYPE (gv) != SVt_PVGV
2145 || !GvCV (gv)
2146 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2147 return PL_ppaddr[OP_ENTERSUB](aTHX);
2148
2149 if (!(PL_op->op_flags & OPf_STACKED))
2150 {
2151 /* ampersand-form of call, use @_ instead of stack */
2152 AV *av = GvAV (PL_defgv);
2153 arg = AvARRAY (av);
2154 items = AvFILLp (av) + 1;
2155 }
2156
2157 /* now call the init function, which needs to set up slf_frame */
2158 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2159 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2160
2161 /* pop args */
2162 SP = PL_stack_base + POPMARK;
2163
2164 PUTBACK;
2165 }
2166
2167 /* now that we have a slf_frame, interpret it! */
2168 /* we use a callback system not to make the code needlessly */
2169 /* complicated, but so we can run multiple perl coros from one cctx */
2170
2171 do
2172 {
2173 struct coro_transfer_args ta;
2174
2175 slf_frame.prepare (aTHX_ &ta);
2176 TRANSFER (ta, 0);
2177
2178 checkmark = PL_stack_sp - PL_stack_base;
2179 }
2180 while (slf_frame.check (aTHX_ &slf_frame));
2181
2182 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2183
2184 /* exception handling */
2185 if (expect_false (CORO_THROW))
2186 {
2187 SV *exception = sv_2mortal (CORO_THROW);
2188
2189 CORO_THROW = 0;
2190 sv_setsv (ERRSV, exception);
2191 croak (0);
2192 }
2193
2194 /* return value handling - mostly like entersub */
2195 /* make sure we put something on the stack in scalar context */
2196 if (GIMME_V == G_SCALAR)
2197 {
2198 dSP;
2199 SV **bot = PL_stack_base + checkmark;
2200
2201 if (sp == bot) /* too few, push undef */
2202 bot [1] = &PL_sv_undef;
2203 else if (sp != bot + 1) /* too many, take last one */
2204 bot [1] = *sp;
2205
2206 SP = bot + 1;
2207
2208 PUTBACK;
2209 }
2210
2211 return NORMAL;
2212}
2213
2214static void
2215api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2216{
2217 int i;
2218 SV **arg = PL_stack_base + ax;
2219 int items = PL_stack_sp - arg + 1;
2220
2221 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2222
2223 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2224 && PL_op->op_ppaddr != pp_slf)
2225 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2226
2227 CvFLAGS (cv) |= CVf_SLF;
2228 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2229 slf_cv = cv;
2230
2231 /* we patch the op, and then re-run the whole call */
2232 /* we have to put the same argument on the stack for this to work */
2233 /* and this will be done by pp_restore */
2234 slf_restore.op_next = (OP *)&slf_restore;
2235 slf_restore.op_type = OP_CUSTOM;
2236 slf_restore.op_ppaddr = pp_restore;
2237 slf_restore.op_first = PL_op;
2238
2239 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2240
2241 if (PL_op->op_flags & OPf_STACKED)
2242 {
2243 if (items > slf_arga)
2244 {
2245 slf_arga = items;
2246 free (slf_argv);
2247 slf_argv = malloc (slf_arga * sizeof (SV *));
2248 }
2249
2250 slf_argc = items;
2251
2252 for (i = 0; i < items; ++i)
2253 slf_argv [i] = SvREFCNT_inc (arg [i]);
2254 }
2255 else
2256 slf_argc = 0;
2257
2258 PL_op->op_ppaddr = pp_slf;
2259 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2260
2261 PL_op = (OP *)&slf_restore;
2262}
2263
2264/*****************************************************************************/
2265/* PerlIO::cede */
2266
2267typedef struct
2268{
2269 PerlIOBuf base;
2270 NV next, every;
2271} PerlIOCede;
2272
2273static IV
2274PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2275{
2276 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2277
2278 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2279 self->next = nvtime () + self->every;
2280
2281 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2282}
2283
2284static SV *
2285PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2286{
2287 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2288
2289 return newSVnv (self->every);
2290}
2291
2292static IV
2293PerlIOCede_flush (pTHX_ PerlIO *f)
2294{
2295 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2296 double now = nvtime ();
2297
2298 if (now >= self->next)
2299 {
2300 api_cede (aTHX);
2301 self->next = now + self->every;
2302 }
2303
2304 return PerlIOBuf_flush (aTHX_ f);
2305}
2306
2307static PerlIO_funcs PerlIO_cede =
2308{
2309 sizeof(PerlIO_funcs),
2310 "cede",
2311 sizeof(PerlIOCede),
2312 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2313 PerlIOCede_pushed,
2314 PerlIOBuf_popped,
2315 PerlIOBuf_open,
2316 PerlIOBase_binmode,
2317 PerlIOCede_getarg,
2318 PerlIOBase_fileno,
2319 PerlIOBuf_dup,
2320 PerlIOBuf_read,
2321 PerlIOBuf_unread,
2322 PerlIOBuf_write,
2323 PerlIOBuf_seek,
2324 PerlIOBuf_tell,
2325 PerlIOBuf_close,
2326 PerlIOCede_flush,
2327 PerlIOBuf_fill,
2328 PerlIOBase_eof,
2329 PerlIOBase_error,
2330 PerlIOBase_clearerr,
2331 PerlIOBase_setlinebuf,
2332 PerlIOBuf_get_base,
2333 PerlIOBuf_bufsiz,
2334 PerlIOBuf_get_ptr,
2335 PerlIOBuf_get_cnt,
2336 PerlIOBuf_set_ptrcnt,
2337};
2338
2339/*****************************************************************************/
2340/* Coro::Semaphore & Coro::Signal */
2341
2342static SV *
2343coro_waitarray_new (pTHX_ int count)
2344{
2345 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2346 AV *av = newAV ();
2347 SV **ary;
2348
2349 /* unfortunately, building manually saves memory */
2350 Newx (ary, 2, SV *);
2351 AvALLOC (av) = ary;
2352 /*AvARRAY (av) = ary;*/
2353 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2354 AvMAX (av) = 1;
2355 AvFILLp (av) = 0;
2356 ary [0] = newSViv (count);
2357
2358 return newRV_noinc ((SV *)av);
2359}
2360
2361/* semaphore */
2362
2363static void
2364coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2365{
2366 SV *count_sv = AvARRAY (av)[0];
2367 IV count = SvIVX (count_sv);
2368
2369 count += adjust;
2370 SvIVX (count_sv) = count;
2371
2372 /* now wake up as many waiters as are expected to lock */
2373 while (count > 0 && AvFILLp (av) > 0)
2374 {
2375 SV *cb;
2376
2377 /* swap first two elements so we can shift a waiter */
2378 AvARRAY (av)[0] = AvARRAY (av)[1];
2379 AvARRAY (av)[1] = count_sv;
2380 cb = av_shift (av);
2381
2382 if (SvOBJECT (cb))
2383 {
2384 api_ready (aTHX_ cb);
2385 --count;
2386 }
2387 else if (SvTYPE (cb) == SVt_PVCV)
1030 { 2388 {
1031 dSP; 2389 dSP;
1032 UNLOCK;
1033
1034 ENTER;
1035 SAVETMPS;
1036
1037 PUSHMARK (SP); 2390 PUSHMARK (SP);
2391 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1038 PUTBACK; 2392 PUTBACK;
1039 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 2393 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1040
1041 FREETMPS;
1042 LEAVE;
1043 continue;
1044 } 2394 }
1045 2395
1046 ta->next = SvSTATE (next_sv); 2396 SvREFCNT_dec (cb);
2397 }
2398}
1047 2399
1048 /* cannot transfer to destroyed coros, skip and look for next */ 2400static void
1049 if (ta->next->flags & CF_DESTROYED) 2401coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2402{
2403 /* call $sem->adjust (0) to possibly wake up some other waiters */
2404 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2405}
2406
2407static int
2408slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2409{
2410 AV *av = (AV *)frame->data;
2411 SV *count_sv = AvARRAY (av)[0];
2412
2413 /* if we are about to throw, don't actually acquire the lock, just throw */
2414 if (CORO_THROW)
2415 return 0;
2416 else if (SvIVX (count_sv) > 0)
2417 {
2418 SvSTATE_current->on_destroy = 0;
2419
2420 if (acquire)
2421 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2422 else
2423 coro_semaphore_adjust (aTHX_ av, 0);
2424
2425 return 0;
2426 }
2427 else
2428 {
2429 int i;
2430 /* if we were woken up but can't down, we look through the whole */
2431 /* waiters list and only add us if we aren't in there already */
2432 /* this avoids some degenerate memory usage cases */
2433
2434 for (i = 1; i <= AvFILLp (av); ++i)
2435 if (AvARRAY (av)[i] == SvRV (coro_current))
2436 return 1;
2437
2438 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2439 return 1;
2440 }
2441}
2442
2443static int
2444slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2445{
2446 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2447}
2448
2449static int
2450slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2451{
2452 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2453}
2454
2455static void
2456slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2457{
2458 AV *av = (AV *)SvRV (arg [0]);
2459
2460 if (SvIVX (AvARRAY (av)[0]) > 0)
2461 {
2462 frame->data = (void *)av;
2463 frame->prepare = prepare_nop;
2464 }
2465 else
2466 {
2467 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2468
2469 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2470 frame->prepare = prepare_schedule;
2471
2472 /* to avoid race conditions when a woken-up coro gets terminated */
2473 /* we arrange for a temporary on_destroy that calls adjust (0) */
2474 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2475 }
2476}
2477
2478static void
2479slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2482 frame->check = slf_check_semaphore_down;
2483}
2484
2485static void
2486slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2487{
2488 if (items >= 2)
2489 {
2490 /* callback form */
2491 AV *av = (AV *)SvRV (arg [0]);
2492 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2493
2494 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2495
2496 if (SvIVX (AvARRAY (av)[0]) > 0)
2497 coro_semaphore_adjust (aTHX_ av, 0);
2498
2499 frame->prepare = prepare_nop;
2500 frame->check = slf_check_nop;
2501 }
2502 else
2503 {
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_wait;
2506 }
2507}
2508
2509/* signal */
2510
2511static void
2512coro_signal_wake (pTHX_ AV *av, int count)
2513{
2514 SvIVX (AvARRAY (av)[0]) = 0;
2515
2516 /* now signal count waiters */
2517 while (count > 0 && AvFILLp (av) > 0)
2518 {
2519 SV *cb;
2520
2521 /* swap first two elements so we can shift a waiter */
2522 cb = AvARRAY (av)[0];
2523 AvARRAY (av)[0] = AvARRAY (av)[1];
2524 AvARRAY (av)[1] = cb;
2525
2526 cb = av_shift (av);
2527
2528 api_ready (aTHX_ cb);
2529 sv_setiv (cb, 0); /* signal waiter */
2530 SvREFCNT_dec (cb);
2531
2532 --count;
2533 }
2534}
2535
2536static int
2537slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2538{
2539 /* if we are about to throw, also stop waiting */
2540 return SvROK ((SV *)frame->data) && !CORO_THROW;
2541}
2542
2543static void
2544slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2545{
2546 AV *av = (AV *)SvRV (arg [0]);
2547
2548 if (SvIVX (AvARRAY (av)[0]))
2549 {
2550 SvIVX (AvARRAY (av)[0]) = 0;
2551 frame->prepare = prepare_nop;
2552 frame->check = slf_check_nop;
2553 }
2554 else
2555 {
2556 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2557
2558 av_push (av, waiter);
2559
2560 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2561 frame->prepare = prepare_schedule;
2562 frame->check = slf_check_signal_wait;
2563 }
2564}
2565
2566/*****************************************************************************/
2567/* Coro::AIO */
2568
2569#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2570
2571/* helper storage struct */
2572struct io_state
2573{
2574 int errorno;
2575 I32 laststype; /* U16 in 5.10.0 */
2576 int laststatval;
2577 Stat_t statcache;
2578};
2579
2580static void
2581coro_aio_callback (pTHX_ CV *cv)
2582{
2583 dXSARGS;
2584 AV *state = (AV *)GENSUB_ARG;
2585 SV *coro = av_pop (state);
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587
2588 av_extend (state, items - 1);
2589
2590 sv_upgrade (data_sv, SVt_PV);
2591 SvCUR_set (data_sv, sizeof (struct io_state));
2592 SvPOK_only (data_sv);
2593
2594 {
2595 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2596
2597 data->errorno = errno;
2598 data->laststype = PL_laststype;
2599 data->laststatval = PL_laststatval;
2600 data->statcache = PL_statcache;
2601 }
2602
2603 /* now build the result vector out of all the parameters and the data_sv */
2604 {
2605 int i;
2606
2607 for (i = 0; i < items; ++i)
2608 av_push (state, SvREFCNT_inc_NN (ST (i)));
2609 }
2610
2611 av_push (state, data_sv);
2612
2613 api_ready (aTHX_ coro);
2614 SvREFCNT_dec (coro);
2615 SvREFCNT_dec ((AV *)state);
2616}
2617
2618static int
2619slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2620{
2621 AV *state = (AV *)frame->data;
2622
2623 /* if we are about to throw, return early */
2624 /* this does not cancel the aio request, but at least */
2625 /* it quickly returns */
2626 if (CORO_THROW)
2627 return 0;
2628
2629 /* one element that is an RV? repeat! */
2630 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2631 return 1;
2632
2633 /* restore status */
2634 {
2635 SV *data_sv = av_pop (state);
2636 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2637
2638 errno = data->errorno;
2639 PL_laststype = data->laststype;
2640 PL_laststatval = data->laststatval;
2641 PL_statcache = data->statcache;
2642
2643 SvREFCNT_dec (data_sv);
2644 }
2645
2646 /* push result values */
2647 {
2648 dSP;
2649 int i;
2650
2651 EXTEND (SP, AvFILLp (state) + 1);
2652 for (i = 0; i <= AvFILLp (state); ++i)
2653 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2654
2655 PUTBACK;
2656 }
2657
2658 return 0;
2659}
2660
2661static void
2662slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2663{
2664 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2665 SV *coro_hv = SvRV (coro_current);
2666 struct coro *coro = SvSTATE_hv (coro_hv);
2667
2668 /* put our coroutine id on the state arg */
2669 av_push (state, SvREFCNT_inc_NN (coro_hv));
2670
2671 /* first see whether we have a non-zero priority and set it as AIO prio */
2672 if (coro->prio)
2673 {
2674 dSP;
2675
2676 static SV *prio_cv;
2677 static SV *prio_sv;
2678
2679 if (expect_false (!prio_cv))
1050 { 2680 {
1051 UNLOCK; 2681 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
1052 SvREFCNT_dec (next_sv); 2682 prio_sv = newSViv (0);
1053 /* coro_nready is already taken care of by destroy */
1054 continue;
1055 } 2683 }
1056 2684
1057 --coro_nready; 2685 PUSHMARK (SP);
1058 UNLOCK; 2686 sv_setiv (prio_sv, coro->prio);
1059 break; 2687 XPUSHs (prio_sv);
1060 }
1061 2688
1062 /* free this only after the transfer */ 2689 PUTBACK;
1063 prev_sv = SvRV (coro_current); 2690 call_sv (prio_cv, G_VOID | G_DISCARD);
1064 SvRV_set (coro_current, next_sv);
1065 ta->prev = SvSTATE (prev_sv);
1066
1067 assert (ta->next->flags & CF_READY);
1068 ta->next->flags &= ~CF_READY;
1069
1070 LOCK;
1071 free_coro_mortal ();
1072 coro_mortal = prev_sv;
1073 UNLOCK;
1074}
1075
1076static void
1077prepare_cede (struct transfer_args *ta)
1078{
1079 api_ready (coro_current);
1080 prepare_schedule (ta);
1081}
1082
1083static int
1084prepare_cede_notself (struct transfer_args *ta)
1085{
1086 if (coro_nready)
1087 { 2691 }
1088 SV *prev = SvRV (coro_current); 2692
1089 prepare_schedule (ta); 2693 /* now call the original request */
1090 api_ready (prev); 2694 {
1091 return 1; 2695 dSP;
2696 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2697 int i;
2698
2699 PUSHMARK (SP);
2700
2701 /* first push all args to the stack */
2702 EXTEND (SP, items + 1);
2703
2704 for (i = 0; i < items; ++i)
2705 PUSHs (arg [i]);
2706
2707 /* now push the callback closure */
2708 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2709
2710 /* now call the AIO function - we assume our request is uncancelable */
2711 PUTBACK;
2712 call_sv ((SV *)req, G_VOID | G_DISCARD);
1092 } 2713 }
1093 else
1094 return 0;
1095}
1096 2714
1097static void 2715 /* now that the requets is going, we loop toll we have a result */
1098api_schedule (void) 2716 frame->data = (void *)state;
1099{ 2717 frame->prepare = prepare_schedule;
1100 struct transfer_args ta; 2718 frame->check = slf_check_aio_req;
1101
1102 prepare_schedule (&ta);
1103 TRANSFER (ta);
1104} 2719}
1105 2720
1106static int 2721static void
1107api_cede (void) 2722coro_aio_req_xs (pTHX_ CV *cv)
1108{ 2723{
1109 struct transfer_args ta; 2724 dXSARGS;
1110 2725
1111 prepare_cede (&ta); 2726 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1112 2727
1113 if (ta.prev != ta.next) 2728 XSRETURN_EMPTY;
1114 {
1115 TRANSFER (ta);
1116 return 1;
1117 }
1118 else
1119 return 0;
1120} 2729}
1121 2730
1122static int 2731/*****************************************************************************/
1123api_cede_notself (void)
1124{
1125 struct transfer_args ta;
1126 2732
1127 if (prepare_cede_notself (&ta)) 2733#if CORO_CLONE
1128 { 2734# include "clone.c"
1129 TRANSFER (ta); 2735#endif
1130 return 1;
1131 }
1132 else
1133 return 0;
1134}
1135 2736
1136MODULE = Coro::State PACKAGE = Coro::State 2737MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1137 2738
1138PROTOTYPES: DISABLE 2739PROTOTYPES: DISABLE
1139 2740
1140BOOT: 2741BOOT:
1141{ 2742{
1142#ifdef USE_ITHREADS 2743#ifdef USE_ITHREADS
1143 MUTEX_INIT (&coro_mutex); 2744# if CORO_PTHREAD
2745 coro_thx = PERL_GET_CONTEXT;
2746# endif
1144#endif 2747#endif
1145 BOOT_PAGESIZE; 2748 BOOT_PAGESIZE;
1146 2749
2750 cctx_current = cctx_new_empty ();
2751
2752 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2753 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2754
2755 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2756 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2757 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2758
2759 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2760 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2761 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2762
1147 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2763 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1148 2764
2765 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2766 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1149 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2767 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1150 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1151 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1152 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1153 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2768 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1154 2769
1155 main_mainstack = PL_mainstack; 2770 main_mainstack = PL_mainstack;
2771 main_top_env = PL_top_env;
1156 2772
2773 while (main_top_env->je_prev)
2774 main_top_env = main_top_env->je_prev;
2775
2776 {
2777 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2778
2779 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2780 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2781
2782 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2783 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2784 }
2785
1157 coroapi.ver = CORO_API_VERSION; 2786 coroapi.ver = CORO_API_VERSION;
2787 coroapi.rev = CORO_API_REVISION;
2788
1158 coroapi.transfer = api_transfer; 2789 coroapi.transfer = api_transfer;
2790
2791 coroapi.sv_state = SvSTATE_;
2792 coroapi.execute_slf = api_execute_slf;
2793 coroapi.prepare_nop = prepare_nop;
2794 coroapi.prepare_schedule = prepare_schedule;
2795 coroapi.prepare_cede = prepare_cede;
2796 coroapi.prepare_cede_notself = prepare_cede_notself;
2797
2798 {
2799 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2800
2801 if (!svp) croak ("Time::HiRes is required");
2802 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2803
2804 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2805 }
1159 2806
1160 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2807 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1161} 2808}
1162 2809
1163SV * 2810SV *
1164new (char *klass, ...) 2811new (char *klass, ...)
2812 ALIAS:
2813 Coro::new = 1
1165 CODE: 2814 CODE:
1166{ 2815{
1167 struct coro *coro; 2816 struct coro *coro;
2817 MAGIC *mg;
1168 HV *hv; 2818 HV *hv;
2819 CV *cb;
1169 int i; 2820 int i;
1170 2821
2822 if (items > 1)
2823 {
2824 cb = coro_sv_2cv (aTHX_ ST (1));
2825
2826 if (!ix)
2827 {
2828 if (CvISXSUB (cb))
2829 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2830
2831 if (!CvROOT (cb))
2832 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2833 }
2834 }
2835
1171 Newz (0, coro, 1, struct coro); 2836 Newz (0, coro, 1, struct coro);
1172 coro->args = newAV (); 2837 coro->args = newAV ();
1173 coro->save = CORO_SAVE_ALL;
1174 coro->flags = CF_NEW; 2838 coro->flags = CF_NEW;
1175 2839
2840 if (coro_first) coro_first->prev = coro;
2841 coro->next = coro_first;
2842 coro_first = coro;
2843
1176 hv = newHV (); 2844 coro->hv = hv = newHV ();
1177 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2845 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2846 mg->mg_flags |= MGf_DUP;
1178 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2847 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1179 2848
2849 if (items > 1)
2850 {
2851 av_extend (coro->args, items - 1 + ix - 1);
2852
2853 if (ix)
2854 {
2855 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2856 cb = cv_coro_run;
2857 }
2858
2859 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2860
1180 for (i = 1; i < items; i++) 2861 for (i = 2; i < items; i++)
1181 av_push (coro->args, newSVsv (ST (i))); 2862 av_push (coro->args, newSVsv (ST (i)));
2863 }
1182} 2864}
1183 OUTPUT: 2865 OUTPUT:
1184 RETVAL 2866 RETVAL
1185 2867
1186int 2868void
1187save (SV *coro, int new_save = -1) 2869transfer (...)
2870 PROTOTYPE: $$
1188 CODE: 2871 CODE:
1189 RETVAL = api_save (coro, new_save); 2872 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1190 OUTPUT:
1191 RETVAL
1192
1193void
1194_set_stacklevel (...)
1195 ALIAS:
1196 Coro::State::transfer = 1
1197 Coro::schedule = 2
1198 Coro::cede = 3
1199 Coro::cede_notself = 4
1200 CODE:
1201{
1202 struct transfer_args ta;
1203
1204 switch (ix)
1205 {
1206 case 0:
1207 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1208 ta.next = 0;
1209 break;
1210
1211 case 1:
1212 if (items != 2)
1213 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1214
1215 prepare_transfer (&ta, ST (0), ST (1));
1216 break;
1217
1218 case 2:
1219 prepare_schedule (&ta);
1220 break;
1221
1222 case 3:
1223 prepare_cede (&ta);
1224 break;
1225
1226 case 4:
1227 if (!prepare_cede_notself (&ta))
1228 XSRETURN_EMPTY;
1229
1230 break;
1231 }
1232
1233 BARRIER;
1234 TRANSFER (ta);
1235
1236 if (GIMME_V != G_VOID && ta.next != ta.prev)
1237 XSRETURN_YES;
1238}
1239 2873
1240bool 2874bool
1241_destroy (SV *coro_sv) 2875_destroy (SV *coro_sv)
1242 CODE: 2876 CODE:
1243 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 2877 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1244 OUTPUT: 2878 OUTPUT:
1245 RETVAL 2879 RETVAL
1246 2880
1247void 2881void
1248_exit (code) 2882_exit (int code)
1249 int code
1250 PROTOTYPE: $ 2883 PROTOTYPE: $
1251 CODE: 2884 CODE:
1252 _exit (code); 2885 _exit (code);
1253 2886
2887SV *
2888clone (Coro::State coro)
2889 CODE:
2890{
2891#if CORO_CLONE
2892 struct coro *ncoro = coro_clone (coro);
2893 MAGIC *mg;
2894 /* TODO: too much duplication */
2895 ncoro->hv = newHV ();
2896 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2897 mg->mg_flags |= MGf_DUP;
2898 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2899#else
2900 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2901#endif
2902}
2903 OUTPUT:
2904 RETVAL
2905
2906int
2907cctx_stacksize (int new_stacksize = 0)
2908 PROTOTYPE: ;$
2909 CODE:
2910 RETVAL = cctx_stacksize;
2911 if (new_stacksize)
2912 {
2913 cctx_stacksize = new_stacksize;
2914 ++cctx_gen;
2915 }
2916 OUTPUT:
2917 RETVAL
2918
2919int
2920cctx_max_idle (int max_idle = 0)
2921 PROTOTYPE: ;$
2922 CODE:
2923 RETVAL = cctx_max_idle;
2924 if (max_idle > 1)
2925 cctx_max_idle = max_idle;
2926 OUTPUT:
2927 RETVAL
2928
1254int 2929int
1255cctx_count () 2930cctx_count ()
2931 PROTOTYPE:
1256 CODE: 2932 CODE:
1257 RETVAL = cctx_count; 2933 RETVAL = cctx_count;
1258 OUTPUT: 2934 OUTPUT:
1259 RETVAL 2935 RETVAL
1260 2936
1261int 2937int
1262cctx_idle () 2938cctx_idle ()
2939 PROTOTYPE:
1263 CODE: 2940 CODE:
1264 RETVAL = cctx_idle; 2941 RETVAL = cctx_idle;
1265 OUTPUT: 2942 OUTPUT:
1266 RETVAL 2943 RETVAL
1267 2944
2945void
2946list ()
2947 PROTOTYPE:
2948 PPCODE:
2949{
2950 struct coro *coro;
2951 for (coro = coro_first; coro; coro = coro->next)
2952 if (coro->hv)
2953 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2954}
2955
2956void
2957call (Coro::State coro, SV *coderef)
2958 ALIAS:
2959 eval = 1
2960 CODE:
2961{
2962 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2963 {
2964 struct coro temp;
2965
2966 if (!(coro->flags & CF_RUNNING))
2967 {
2968 PUTBACK;
2969 save_perl (aTHX_ &temp);
2970 load_perl (aTHX_ coro);
2971 }
2972
2973 {
2974 dSP;
2975 ENTER;
2976 SAVETMPS;
2977 PUTBACK;
2978 PUSHSTACK;
2979 PUSHMARK (SP);
2980
2981 if (ix)
2982 eval_sv (coderef, 0);
2983 else
2984 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2985
2986 POPSTACK;
2987 SPAGAIN;
2988 FREETMPS;
2989 LEAVE;
2990 PUTBACK;
2991 }
2992
2993 if (!(coro->flags & CF_RUNNING))
2994 {
2995 save_perl (aTHX_ coro);
2996 load_perl (aTHX_ &temp);
2997 SPAGAIN;
2998 }
2999 }
3000}
3001
3002SV *
3003is_ready (Coro::State coro)
3004 PROTOTYPE: $
3005 ALIAS:
3006 is_ready = CF_READY
3007 is_running = CF_RUNNING
3008 is_new = CF_NEW
3009 is_destroyed = CF_DESTROYED
3010 CODE:
3011 RETVAL = boolSV (coro->flags & ix);
3012 OUTPUT:
3013 RETVAL
3014
3015void
3016throw (Coro::State self, SV *throw = &PL_sv_undef)
3017 PROTOTYPE: $;$
3018 CODE:
3019{
3020 struct coro *current = SvSTATE_current;
3021 SV **throwp = self == current ? &CORO_THROW : &self->except;
3022 SvREFCNT_dec (*throwp);
3023 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3024}
3025
3026void
3027api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3028 PROTOTYPE: $;$
3029 C_ARGS: aTHX_ coro, flags
3030
3031SV *
3032has_cctx (Coro::State coro)
3033 PROTOTYPE: $
3034 CODE:
3035 /* maybe manage the running flag differently */
3036 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
3037 OUTPUT:
3038 RETVAL
3039
3040int
3041is_traced (Coro::State coro)
3042 PROTOTYPE: $
3043 CODE:
3044 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
3045 OUTPUT:
3046 RETVAL
3047
3048UV
3049rss (Coro::State coro)
3050 PROTOTYPE: $
3051 ALIAS:
3052 usecount = 1
3053 CODE:
3054 switch (ix)
3055 {
3056 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3057 case 1: RETVAL = coro->usecount; break;
3058 }
3059 OUTPUT:
3060 RETVAL
3061
3062void
3063force_cctx ()
3064 PROTOTYPE:
3065 CODE:
3066 cctx_current->idle_sp = 0;
3067
3068void
3069swap_defsv (Coro::State self)
3070 PROTOTYPE: $
3071 ALIAS:
3072 swap_defav = 1
3073 CODE:
3074 if (!self->slot)
3075 croak ("cannot swap state with coroutine that has no saved state,");
3076 else
3077 {
3078 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3079 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3080
3081 SV *tmp = *src; *src = *dst; *dst = tmp;
3082 }
3083
3084
1268MODULE = Coro::State PACKAGE = Coro 3085MODULE = Coro::State PACKAGE = Coro
1269 3086
1270BOOT: 3087BOOT:
1271{ 3088{
1272 int i; 3089 int i;
1273 3090
3091 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3092 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3093 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3094 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3095 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3096 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3097 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3098 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3099
3100 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3101 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3102 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3103 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
3104
1274 coro_stash = gv_stashpv ("Coro", TRUE); 3105 coro_stash = gv_stashpv ("Coro", TRUE);
1275 3106
1276 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3107 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1277 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3108 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1278 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3109 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1279 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3110 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1280 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3111 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1281 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3112 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1282 3113
1283 coro_current = get_sv ("Coro::current", FALSE);
1284 SvREADONLY_on (coro_current);
1285
1286 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3114 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1287 coro_ready[i] = newAV (); 3115 coro_ready[i] = newAV ();
1288 3116
1289 { 3117 {
1290 SV *sv = perl_get_sv("Coro::API", 1); 3118 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1291 3119
1292 coroapi.schedule = api_schedule; 3120 coroapi.schedule = api_schedule;
1293 coroapi.save = api_save; 3121 coroapi.schedule_to = api_schedule_to;
1294 coroapi.cede = api_cede; 3122 coroapi.cede = api_cede;
1295 coroapi.cede_notself = api_cede_notself; 3123 coroapi.cede_notself = api_cede_notself;
1296 coroapi.ready = api_ready; 3124 coroapi.ready = api_ready;
1297 coroapi.is_ready = api_is_ready; 3125 coroapi.is_ready = api_is_ready;
1298 coroapi.nready = &coro_nready; 3126 coroapi.nready = coro_nready;
1299 coroapi.current = coro_current; 3127 coroapi.current = coro_current;
1300 3128
1301 GCoroAPI = &coroapi; 3129 /*GCoroAPI = &coroapi;*/
1302 sv_setiv (sv, (IV)&coroapi); 3130 sv_setiv (sv, (IV)&coroapi);
1303 SvREADONLY_on (sv); 3131 SvREADONLY_on (sv);
1304 } 3132 }
1305} 3133}
3134
3135void
3136terminate (...)
3137 CODE:
3138 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3139
3140void
3141schedule (...)
3142 CODE:
3143 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3144
3145void
3146schedule_to (...)
3147 CODE:
3148 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3149
3150void
3151cede_to (...)
3152 CODE:
3153 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3154
3155void
3156cede (...)
3157 CODE:
3158 CORO_EXECUTE_SLF_XS (slf_init_cede);
3159
3160void
3161cede_notself (...)
3162 CODE:
3163 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3164
3165void
3166_cancel (Coro::State self)
3167 CODE:
3168 coro_state_destroy (aTHX_ self);
3169 coro_call_on_destroy (aTHX_ self);
1306 3170
1307void 3171void
1308_set_current (SV *current) 3172_set_current (SV *current)
1309 PROTOTYPE: $ 3173 PROTOTYPE: $
1310 CODE: 3174 CODE:
1311 SvREFCNT_dec (SvRV (coro_current)); 3175 SvREFCNT_dec (SvRV (coro_current));
1312 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3176 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3177
3178void
3179_set_readyhook (SV *hook)
3180 PROTOTYPE: $
3181 CODE:
3182 SvREFCNT_dec (coro_readyhook);
3183 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1313 3184
1314int 3185int
1315prio (Coro::State coro, int newprio = 0) 3186prio (Coro::State coro, int newprio = 0)
3187 PROTOTYPE: $;$
1316 ALIAS: 3188 ALIAS:
1317 nice = 1 3189 nice = 1
1318 CODE: 3190 CODE:
1319{ 3191{
1320 RETVAL = coro->prio; 3192 RETVAL = coro->prio;
… …
1335 3207
1336SV * 3208SV *
1337ready (SV *self) 3209ready (SV *self)
1338 PROTOTYPE: $ 3210 PROTOTYPE: $
1339 CODE: 3211 CODE:
1340 RETVAL = boolSV (api_ready (self)); 3212 RETVAL = boolSV (api_ready (aTHX_ self));
1341 OUTPUT:
1342 RETVAL
1343
1344SV *
1345is_ready (SV *self)
1346 PROTOTYPE: $
1347 CODE:
1348 RETVAL = boolSV (api_is_ready (self));
1349 OUTPUT: 3213 OUTPUT:
1350 RETVAL 3214 RETVAL
1351 3215
1352int 3216int
1353nready (...) 3217nready (...)
… …
1355 CODE: 3219 CODE:
1356 RETVAL = coro_nready; 3220 RETVAL = coro_nready;
1357 OUTPUT: 3221 OUTPUT:
1358 RETVAL 3222 RETVAL
1359 3223
1360MODULE = Coro::State PACKAGE = Coro::AIO 3224void
3225_pool_handler (...)
3226 CODE:
3227 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3228
3229void
3230async_pool (SV *cv, ...)
3231 PROTOTYPE: &@
3232 PPCODE:
3233{
3234 HV *hv = (HV *)av_pop (av_async_pool);
3235 AV *av = newAV ();
3236 SV *cb = ST (0);
3237 int i;
3238
3239 av_extend (av, items - 2);
3240 for (i = 1; i < items; ++i)
3241 av_push (av, SvREFCNT_inc_NN (ST (i)));
3242
3243 if ((SV *)hv == &PL_sv_undef)
3244 {
3245 PUSHMARK (SP);
3246 EXTEND (SP, 2);
3247 PUSHs (sv_Coro);
3248 PUSHs ((SV *)cv_pool_handler);
3249 PUTBACK;
3250 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3251 SPAGAIN;
3252
3253 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3254 }
3255
3256 {
3257 struct coro *coro = SvSTATE_hv (hv);
3258
3259 assert (!coro->invoke_cb);
3260 assert (!coro->invoke_av);
3261 coro->invoke_cb = SvREFCNT_inc (cb);
3262 coro->invoke_av = av;
3263 }
3264
3265 api_ready (aTHX_ (SV *)hv);
3266
3267 if (GIMME_V != G_VOID)
3268 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3269 else
3270 SvREFCNT_dec (hv);
3271}
1361 3272
1362SV * 3273SV *
1363_get_state () 3274rouse_cb ()
3275 PROTOTYPE:
1364 CODE: 3276 CODE:
1365{ 3277 RETVAL = coro_new_rouse_cb (aTHX);
1366 struct io_state *data;
1367
1368 RETVAL = newSV (sizeof (struct io_state));
1369 data = (struct io_state *)SvPVX (RETVAL);
1370 SvCUR_set (RETVAL, sizeof (struct io_state));
1371 SvPOK_only (RETVAL);
1372
1373 data->errorno = errno;
1374 data->laststype = PL_laststype;
1375 data->laststatval = PL_laststatval;
1376 data->statcache = PL_statcache;
1377}
1378 OUTPUT: 3278 OUTPUT:
1379 RETVAL 3279 RETVAL
1380 3280
1381void 3281void
1382_set_state (char *data_) 3282rouse_wait (...)
1383 PROTOTYPE: $ 3283 PROTOTYPE: ;$
3284 PPCODE:
3285 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3286
3287
3288MODULE = Coro::State PACKAGE = PerlIO::cede
3289
3290BOOT:
3291 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3292
3293
3294MODULE = Coro::State PACKAGE = Coro::Semaphore
3295
3296SV *
3297new (SV *klass, SV *count = 0)
1384 CODE: 3298 CODE:
1385{ 3299 RETVAL = sv_bless (
1386 struct io_state *data = (void *)data_; 3300 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3301 GvSTASH (CvGV (cv))
3302 );
3303 OUTPUT:
3304 RETVAL
1387 3305
1388 errno = data->errorno; 3306# helper for Coro::Channel
1389 PL_laststype = data->laststype; 3307SV *
1390 PL_laststatval = data->laststatval; 3308_alloc (int count)
1391 PL_statcache = data->statcache; 3309 CODE:
1392} 3310 RETVAL = coro_waitarray_new (aTHX_ count);
3311 OUTPUT:
3312 RETVAL
1393 3313
3314SV *
3315count (SV *self)
3316 CODE:
3317 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3318 OUTPUT:
3319 RETVAL
3320
3321void
3322up (SV *self, int adjust = 1)
3323 ALIAS:
3324 adjust = 1
3325 CODE:
3326 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3327
3328void
3329down (...)
3330 CODE:
3331 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3332
3333void
3334wait (...)
3335 CODE:
3336 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3337
3338void
3339try (SV *self)
3340 PPCODE:
3341{
3342 AV *av = (AV *)SvRV (self);
3343 SV *count_sv = AvARRAY (av)[0];
3344 IV count = SvIVX (count_sv);
3345
3346 if (count > 0)
3347 {
3348 --count;
3349 SvIVX (count_sv) = count;
3350 XSRETURN_YES;
3351 }
3352 else
3353 XSRETURN_NO;
3354}
3355
3356void
3357waiters (SV *self)
3358 PPCODE:
3359{
3360 AV *av = (AV *)SvRV (self);
3361 int wcount = AvFILLp (av) + 1 - 1;
3362
3363 if (GIMME_V == G_SCALAR)
3364 XPUSHs (sv_2mortal (newSViv (wcount)));
3365 else
3366 {
3367 int i;
3368 EXTEND (SP, wcount);
3369 for (i = 1; i <= wcount; ++i)
3370 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3371 }
3372}
3373
3374MODULE = Coro::State PACKAGE = Coro::Signal
3375
3376SV *
3377new (SV *klass)
3378 CODE:
3379 RETVAL = sv_bless (
3380 coro_waitarray_new (aTHX_ 0),
3381 GvSTASH (CvGV (cv))
3382 );
3383 OUTPUT:
3384 RETVAL
3385
3386void
3387wait (...)
3388 CODE:
3389 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3390
3391void
3392broadcast (SV *self)
3393 CODE:
3394{
3395 AV *av = (AV *)SvRV (self);
3396 coro_signal_wake (aTHX_ av, AvFILLp (av));
3397}
3398
3399void
3400send (SV *self)
3401 CODE:
3402{
3403 AV *av = (AV *)SvRV (self);
3404
3405 if (AvFILLp (av))
3406 coro_signal_wake (aTHX_ av, 1);
3407 else
3408 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3409}
3410
3411IV
3412awaited (SV *self)
3413 CODE:
3414 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3415 OUTPUT:
3416 RETVAL
3417
3418
3419MODULE = Coro::State PACKAGE = Coro::AnyEvent
3420
3421BOOT:
3422 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3423
3424void
3425_schedule (...)
3426 CODE:
3427{
3428 static int incede;
3429
3430 api_cede_notself (aTHX);
3431
3432 ++incede;
3433 while (coro_nready >= incede && api_cede (aTHX))
3434 ;
3435
3436 sv_setsv (sv_activity, &PL_sv_undef);
3437 if (coro_nready >= incede)
3438 {
3439 PUSHMARK (SP);
3440 PUTBACK;
3441 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3442 }
3443
3444 --incede;
3445}
3446
3447
3448MODULE = Coro::State PACKAGE = Coro::AIO
3449
3450void
3451_register (char *target, char *proto, SV *req)
3452 CODE:
3453{
3454 CV *req_cv = coro_sv_2cv (aTHX_ req);
3455 /* newXSproto doesn't return the CV on 5.8 */
3456 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3457 sv_setpv ((SV *)slf_cv, proto);
3458 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3459}
3460

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