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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 1.328 by root, Tue Nov 25 09:49:43 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 */
180static SV *sv_idle; /* $Coro::idle */
181
182static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
187
188/* async_pool helper stuff */
189static SV *sv_pool_rss;
190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
130 199
131static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
132static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
133 202
203enum {
204 CC_MAPPED = 0x01,
205 CC_NOREUSE = 0x02, /* throw this away after tracing */
206 CC_TRACE = 0x04,
207 CC_TRACE_SUB = 0x08, /* trace sub calls */
208 CC_TRACE_LINE = 0x10, /* trace each statement */
209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
210};
211
134/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
135typedef struct coro_cctx { 213typedef struct coro_cctx
214{
136 struct coro_cctx *next; 215 struct coro_cctx *next;
137 216
138 /* the stack */ 217 /* the stack */
139 void *sptr; 218 void *sptr;
140 long ssize; /* positive == mmap, otherwise malloc */ 219 size_t ssize;
141 220
142 /* cpu state */ 221 /* cpu state */
143 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 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 */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
145 JMPENV *top_env; 224 JMPENV *top_env;
146 coro_context cctx; 225 coro_context cctx;
147 226
148 int inuse; 227 U32 gen;
149
150#if USE_VALGRIND 228#if CORO_USE_VALGRIND
151 int valgrind_id; 229 int valgrind_id;
152#endif 230#endif
231 unsigned char flags;
153} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
154 237
155enum { 238enum {
156 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
157 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
158 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
159 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
160}; 243};
161 244
162/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
163struct coro { 246typedef struct
164 /* the c coroutine allocated to this perl coroutine, if any */ 247{
165 coro_cctx *cctx; 248 SV *defsv;
166 249 AV *defav;
167 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
168 AV *args; 251 SV *irsgv;
169 int refcnt; 252 HV *hinthv;
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; 253#define VAR(name,type) type name;
181# include "state.h" 254# include "state.h"
182#undef VAR 255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
260/* this is a structure representing a perl-level coroutine */
261struct coro {
262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx;
264
265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */
269
270 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
276
277 /* statistics */
278 int usecount; /* number of transfers to this coro */
183 279
184 /* coro process data */ 280 /* coro process data */
185 int prio; 281 int prio;
282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
284
285 /* async_pool */
286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
289
290 /* linked list */
291 struct coro *next, *prev;
186}; 292};
187 293
188typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
189typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
190 301
191/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
192 303
193#define PRIO_MAX 3 304#define PRIO_MAX 3
194#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
197#define PRIO_IDLE -3 308#define PRIO_IDLE -3
198#define PRIO_MIN -4 309#define PRIO_MIN -4
199 310
200/* for Coro.pm */ 311/* for Coro.pm */
201static SV *coro_current; 312static SV *coro_current;
313static SV *coro_readyhook;
202static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
203static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
316static struct coro *coro_first;
317#define coro_nready coroapi.nready
204 318
205/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
206 320
321static SV *
322coro_get_sv (pTHX_ const char *name, int create)
323{
324#if PERL_VERSION_ATLEAST (5,10,0)
325 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
326 get_sv (name, create);
327#endif
328 return get_sv (name, create);
329}
330
207static AV * 331static AV *
332coro_get_av (pTHX_ const char *name, int create)
333{
334#if PERL_VERSION_ATLEAST (5,10,0)
335 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
336 get_av (name, create);
337#endif
338 return get_av (name, create);
339}
340
341static HV *
342coro_get_hv (pTHX_ const char *name, int create)
343{
344#if PERL_VERSION_ATLEAST (5,10,0)
345 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
346 get_hv (name, create);
347#endif
348 return get_hv (name, create);
349}
350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360static AV *
208coro_clone_padlist (CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
209{ 362{
210 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
211 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
212 365
213 newpadlist = newAV (); 366 newpadlist = newAV ();
214 AvREAL_off (newpadlist); 367 AvREAL_off (newpadlist);
215#if PERL_VERSION_ATLEAST (5,9,0) 368#if PERL_VERSION_ATLEAST (5,10,0)
216 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
217#else 370#else
218 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
219#endif 372#endif
220 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
221 --AvFILLp (padlist); 374 --AvFILLp (padlist);
222 375
223 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
224 av_store (newpadlist, 1, (SV *)newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
225 378
226 return newpadlist; 379 return newpadlist;
227} 380}
228 381
229static void 382static void
230free_padlist (AV *padlist) 383free_padlist (pTHX_ AV *padlist)
231{ 384{
232 /* may be during global destruction */ 385 /* may be during global destruction */
233 if (SvREFCNT (padlist)) 386 if (SvREFCNT (padlist))
234 { 387 {
235 I32 i = AvFILLp (padlist); 388 I32 i = AvFILLp (padlist);
… …
256 AV *padlist; 409 AV *padlist;
257 AV *av = (AV *)mg->mg_obj; 410 AV *av = (AV *)mg->mg_obj;
258 411
259 /* casting is fun. */ 412 /* casting is fun. */
260 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
261 free_padlist (padlist); 414 free_padlist (aTHX_ padlist);
262 415
263 SvREFCNT_dec (av); 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
264 417
265 return 0; 418 return 0;
266} 419}
267 420
421#define CORO_MAGIC_type_cv 26
268#define PERL_MAGIC_coro PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
269 423
270static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 424static MGVTBL coro_cv_vtbl = {
425 0, 0, 0, 0,
426 coro_cv_free
427};
271 428
272#define CORO_MAGIC(cv) \ 429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
273 SvMAGIC (cv) \ 431 ? SvMAGIC (sv) \
274 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 432 : mg_find (sv, type))
275 ? SvMAGIC (cv) \ 433
276 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
277 : 0 437 : 0)
438
439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
441
442INLINE struct coro *
443SvSTATE_ (pTHX_ SV *coro)
444{
445 HV *stash;
446 MAGIC *mg;
447
448 if (SvROK (coro))
449 coro = SvRV (coro);
450
451 if (expect_false (SvTYPE (coro) != SVt_PVHV))
452 croak ("Coro::State object required");
453
454 stash = SvSTASH (coro);
455 if (expect_false (stash != coro_stash && stash != coro_state_stash))
456 {
457 /* very slow, but rare, check */
458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
459 croak ("Coro::State object required");
460 }
461
462 mg = CORO_MAGIC_state (coro);
463 return (struct coro *)mg->mg_ptr;
464}
465
466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
278 471
279/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
280static void 473static void
281get_padlist (CV *cv) 474get_padlist (pTHX_ CV *cv)
282{ 475{
283 MAGIC *mg = CORO_MAGIC (cv); 476 MAGIC *mg = CORO_MAGIC_cv (cv);
284 AV *av; 477 AV *av;
285 478
286 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
287 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288 else 481 else
289 { 482 {
290#if PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
291 /* this is probably cleaner, but also slower? */ 484 /* this is probably cleaner? but also slower! */
485 /* in practise, it seems to be less stable */
292 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
293 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
294 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
295 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
296#else 490#else
297 CvPADLIST (cv) = coro_clone_padlist (cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
298#endif 492#endif
299 } 493 }
300} 494}
301 495
302static void 496static void
303put_padlist (CV *cv) 497put_padlist (pTHX_ CV *cv)
304{ 498{
305 MAGIC *mg = CORO_MAGIC (cv); 499 MAGIC *mg = CORO_MAGIC_cv (cv);
306 AV *av; 500 AV *av;
307 501
308 if (!mg) 502 if (expect_false (!mg))
309 { 503 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 }
315 504
316 av = (AV *)mg->mg_obj; 505 av = (AV *)mg->mg_obj;
317 506
318 if (AvFILLp (av) >= AvMAX (av)) 507 if (expect_false (AvFILLp (av) >= AvMAX (av)))
319 av_extend (av, AvMAX (av) + 1); 508 av_extend (av, AvMAX (av) + 1);
320 509
321 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 510 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322} 511}
323 512
324/** load & save, init *******************************************************/ 513/** load & save, init *******************************************************/
325 514
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 515static void
332load_perl (Coro__State c) 516load_perl (pTHX_ Coro__State c)
333{ 517{
518 perl_slots *slot = c->slot;
519 c->slot = 0;
520
521 PL_mainstack = c->mainstack;
522
523 GvSV (PL_defgv) = slot->defsv;
524 GvAV (PL_defgv) = slot->defav;
525 GvSV (PL_errgv) = slot->errsv;
526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
528
334#define VAR(name,type) PL_ ## name = c->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
335# include "state.h" 530 # include "state.h"
336#undef VAR 531 #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 }
352 532
353 { 533 {
354 dSP; 534 dSP;
535
355 CV *cv; 536 CV *cv;
356 537
357 /* now do the ugly restore mess */ 538 /* now do the ugly restore mess */
358 while ((cv = (CV *)POPs)) 539 while (expect_true (cv = (CV *)POPs))
359 { 540 {
360 put_padlist (cv); /* mark this padlist as available */ 541 put_padlist (aTHX_ cv); /* mark this padlist as available */
361 CvDEPTH (cv) = PTR2IV (POPs); 542 CvDEPTH (cv) = PTR2IV (POPs);
362 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
363 } 544 }
364 545
365 PUTBACK; 546 PUTBACK;
366 } 547 }
367}
368 548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
551}
552
369static void 553static void
370save_perl (Coro__State c) 554save_perl (pTHX_ Coro__State c)
371{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
372 { 559 {
373 dSP; 560 dSP;
374 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
375 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
376 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
378 /* 565 /*
379 * the worst thing you can imagine happens first - we have to save 566 * the worst thing you can imagine happens first - we have to save
380 * (and reinitialize) all cv's in the whole callchain :( 567 * (and reinitialize) all cv's in the whole callchain :(
381 */ 568 */
382 569
383 EXTEND (SP, 3 + 1);
384 PUSHs (Nullsv); 570 XPUSHs (Nullsv);
385 /* this loop was inspired by pp_caller */ 571 /* this loop was inspired by pp_caller */
386 for (;;) 572 for (;;)
387 { 573 {
388 while (cxix >= 0) 574 while (expect_true (cxix >= 0))
389 { 575 {
390 PERL_CONTEXT *cx = &ccstk[cxix--]; 576 PERL_CONTEXT *cx = &ccstk[cxix--];
391 577
392 if (CxTYPE (cx) == CXt_SUB) 578 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
393 { 579 {
394 CV *cv = cx->blk_sub.cv; 580 CV *cv = cx->blk_sub.cv;
395 581
396 if (CvDEPTH (cv)) 582 if (expect_true (CvDEPTH (cv)))
397 { 583 {
398 EXTEND (SP, 3); 584 EXTEND (SP, 3);
399 PUSHs ((SV *)CvPADLIST (cv)); 585 PUSHs ((SV *)CvPADLIST (cv));
400 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 586 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
401 PUSHs ((SV *)cv); 587 PUSHs ((SV *)cv);
402 588
403 CvDEPTH (cv) = 0; 589 CvDEPTH (cv) = 0;
404 get_padlist (cv); 590 get_padlist (aTHX_ cv);
405 } 591 }
406 } 592 }
407 } 593 }
408 594
409 if (top_si->si_type == PERLSI_MAIN) 595 if (expect_true (top_si->si_type == PERLSI_MAIN))
410 break; 596 break;
411 597
412 top_si = top_si->si_prev; 598 top_si = top_si->si_prev;
413 ccstk = top_si->si_cxstack; 599 ccstk = top_si->si_cxstack;
414 cxix = top_si->si_cxix; 600 cxix = top_si->si_cxix;
415 } 601 }
416 602
417 PUTBACK; 603 PUTBACK;
418 } 604 }
419 605
420 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 606 /* allocate some space on the context stack for our purposes */
421 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 607 /* we manually unroll here, as usually 2 slots is enough */
422 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 608 if (SLOT_COUNT >= 1) CXINC;
423 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 609 if (SLOT_COUNT >= 2) CXINC;
610 if (SLOT_COUNT >= 3) CXINC;
611 {
612 int i;
613 for (i = 3; i < SLOT_COUNT; ++i)
614 CXINC;
615 }
616 cxstack_ix -= SLOT_COUNT; /* undo allocation */
424 617
618 c->mainstack = PL_mainstack;
619
620 {
621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
622
623 slot->defav = GvAV (PL_defgv);
624 slot->defsv = DEFSV;
625 slot->errsv = ERRSV;
626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
628
425#define VAR(name,type)c->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
426# include "state.h" 630 # include "state.h"
427#undef VAR 631 #undef VAR
632 }
428} 633}
429 634
430/* 635/*
431 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
432 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
433 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
434 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
435 */ 640 */
436#if PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
437# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
438#else 643#else
439static void 644static void
440coro_init_stacks () 645coro_init_stacks (pTHX)
441{ 646{
442 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 647 PL_curstackinfo = new_stackinfo(32, 8);
443 PL_curstackinfo->si_type = PERLSI_MAIN; 648 PL_curstackinfo->si_type = PERLSI_MAIN;
444 PL_curstack = PL_curstackinfo->si_stack; 649 PL_curstack = PL_curstackinfo->si_stack;
445 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446 651
447 PL_stack_base = AvARRAY(PL_curstack); 652 PL_stack_base = AvARRAY(PL_curstack);
448 PL_stack_sp = PL_stack_base; 653 PL_stack_sp = PL_stack_base;
449 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 654 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450 655
451 New(50,PL_tmps_stack,128,SV*); 656 New(50,PL_tmps_stack,32,SV*);
452 PL_tmps_floor = -1; 657 PL_tmps_floor = -1;
453 PL_tmps_ix = -1; 658 PL_tmps_ix = -1;
454 PL_tmps_max = 128; 659 PL_tmps_max = 32;
455 660
456 New(54,PL_markstack,32,I32); 661 New(54,PL_markstack,16,I32);
457 PL_markstack_ptr = PL_markstack; 662 PL_markstack_ptr = PL_markstack;
458 PL_markstack_max = PL_markstack + 32; 663 PL_markstack_max = PL_markstack + 16;
459 664
460#ifdef SET_MARK_OFFSET 665#ifdef SET_MARK_OFFSET
461 SET_MARK_OFFSET; 666 SET_MARK_OFFSET;
462#endif 667#endif
463 668
464 New(54,PL_scopestack,32,I32); 669 New(54,PL_scopestack,8,I32);
465 PL_scopestack_ix = 0; 670 PL_scopestack_ix = 0;
466 PL_scopestack_max = 32; 671 PL_scopestack_max = 8;
467 672
468 New(54,PL_savestack,64,ANY); 673 New(54,PL_savestack,24,ANY);
469 PL_savestack_ix = 0; 674 PL_savestack_ix = 0;
470 PL_savestack_max = 64; 675 PL_savestack_max = 24;
471 676
472#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
473 New(54,PL_retstack,16,OP*); 678 New(54,PL_retstack,4,OP*);
474 PL_retstack_ix = 0; 679 PL_retstack_ix = 0;
475 PL_retstack_max = 16; 680 PL_retstack_max = 4;
476#endif 681#endif
477} 682}
478#endif 683#endif
479 684
480/* 685/*
481 * destroy the stacks, the callchain etc... 686 * destroy the stacks, the callchain etc...
482 */ 687 */
483static void 688static void
484coro_destroy_stacks () 689coro_destruct_stacks (pTHX)
485{ 690{
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) 691 while (PL_curstackinfo->si_next)
504 PL_curstackinfo = PL_curstackinfo->si_next; 692 PL_curstackinfo = PL_curstackinfo->si_next;
505 693
506 while (PL_curstackinfo) 694 while (PL_curstackinfo)
507 { 695 {
… …
517 705
518 Safefree (PL_tmps_stack); 706 Safefree (PL_tmps_stack);
519 Safefree (PL_markstack); 707 Safefree (PL_markstack);
520 Safefree (PL_scopestack); 708 Safefree (PL_scopestack);
521 Safefree (PL_savestack); 709 Safefree (PL_savestack);
522#if !PERL_VERSION_ATLEAST (5,9,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
523 Safefree (PL_retstack); 711 Safefree (PL_retstack);
524#endif 712#endif
525} 713}
526 714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
723
724static size_t
725coro_rss (pTHX_ struct coro *coro)
726{
727 size_t rss = sizeof (*coro);
728
729 if (coro->mainstack)
730 {
731 if (coro->flags & CF_RUNNING)
732 {
733 #define SYM(sym) PL_ ## sym
734 CORO_RSS;
735 #undef SYM
736 }
737 else
738 {
739 #define SYM(sym) coro->slot->sym
740 CORO_RSS;
741 #undef SYM
742 }
743 }
744
745 return rss;
746}
747
527/** coroutine stack handling ************************************************/ 748/** coroutine stack handling ************************************************/
528 749
750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
751static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
752static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
753
754/* apparently < 5.8.8 */
755#ifndef MgPV_nolen_const
756#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
757 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
758 (const char*)(mg)->mg_ptr)
759#endif
760
761/*
762 * This overrides the default magic get method of %SIG elements.
763 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
764 * and instead of tryign to save and restore the hash elements, we just provide
765 * readback here.
766 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
767 * not expecting this to actually change the hook. This is a potential problem
768 * when a schedule happens then, but we ignore this.
769 */
529static void 770static int
530setup_coro (struct coro *coro) 771coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
772{
773 const char *s = MgPV_nolen_const (mg);
774
775 if (*s == '_')
776 {
777 SV **svp = 0;
778
779 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
780 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
781
782 if (svp)
783 {
784 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
785 return 0;
786 }
787 }
788
789 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
790}
791
792static int
793coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
794{
795 const char *s = MgPV_nolen_const (mg);
796
797 if (*s == '_')
798 {
799 SV **svp = 0;
800
801 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
802 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
803
804 if (svp)
805 {
806 SV *old = *svp;
807 *svp = 0;
808 SvREFCNT_dec (old);
809 return 0;
810 }
811 }
812
813 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
814}
815
816static int
817coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
818{
819 const char *s = MgPV_nolen_const (mg);
820
821 if (*s == '_')
822 {
823 SV **svp = 0;
824
825 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
826 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
827
828 if (svp)
829 {
830 SV *old = *svp;
831 *svp = newSVsv (sv);
832 SvREFCNT_dec (old);
833 return 0;
834 }
835 }
836
837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
838}
839
840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
862coro_setup (pTHX_ struct coro *coro)
531{ 863{
532 /* 864 /*
533 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
534 */ 866 */
535
536 coro_init_stacks (); 867 coro_init_stacks (aTHX);
537 868
869 PL_runops = RUNOPS_DEFAULT;
538 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
539 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
540 PL_curpm = 0; 876 PL_curpm = 0;
877 PL_curpad = 0;
541 PL_localizing = 0; 878 PL_localizing = 0;
542 PL_dirty = 0; 879 PL_dirty = 0;
543 PL_restartop = 0; 880 PL_restartop = 0;
881#if PERL_VERSION_ATLEAST (5,10,0)
882 PL_parser = 0;
883#endif
884 PL_hints = 0;
885
886 /* recreate the die/warn hooks */
887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
889
890 GvSV (PL_defgv) = newSV (0);
891 GvAV (PL_defgv) = coro->args; coro->args = 0;
892 GvSV (PL_errgv) = newSV (0);
893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
895 PL_rs = newSVsv (GvSV (irsgv));
896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
544 897
545 { 898 {
546 dSP; 899 dSP;
547 LOGOP myop; 900 UNOP myop;
548 901
549 SvREFCNT_dec (GvAV (PL_defgv));
550 GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552 Zero (&myop, 1, LOGOP); 902 Zero (&myop, 1, UNOP);
553 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
554 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
555 906
556 PUSHMARK (SP); 907 PUSHMARK (SP);
557 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 908 PUSHs ((SV *)coro->startcv);
558 PUTBACK; 909 PUTBACK;
559 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
560 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561 SPAGAIN;
562 } 912 }
563 913
564 ENTER; /* necessary e.g. for dounwind */ 914 /* this newly created coroutine might be run on an existing cctx which most
565} 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
916 */
917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
566 919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
930}
931
567static void 932static void
933coro_destruct (pTHX_ struct coro *coro)
934{
935 if (!IN_DESTRUCT)
936 {
937 /* restore all saved variables and stuff */
938 LEAVE_SCOPE (0);
939 assert (PL_tmps_floor == -1);
940
941 /* free all temporaries */
942 FREETMPS;
943 assert (PL_tmps_ix == -1);
944
945 /* unwind all extra stacks */
946 POPSTACK_TO (PL_mainstack);
947
948 /* unwind main stack */
949 dounwind (-1);
950 }
951
952 SvREFCNT_dec (GvSV (PL_defgv));
953 SvREFCNT_dec (GvAV (PL_defgv));
954 SvREFCNT_dec (GvSV (PL_errgv));
955 SvREFCNT_dec (PL_defoutgv);
956 SvREFCNT_dec (PL_rs);
957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
959
960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962
963 SvREFCNT_dec (coro->saved_deffh);
964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
967
968 coro_destruct_stacks (aTHX);
969}
970
971INLINE void
568free_coro_mortal () 972free_coro_mortal (pTHX)
569{ 973{
570 if (coro_mortal) 974 if (expect_true (coro_mortal))
571 { 975 {
572 SvREFCNT_dec (coro_mortal); 976 SvREFCNT_dec (coro_mortal);
573 coro_mortal = 0; 977 coro_mortal = 0;
574 } 978 }
575} 979}
576 980
577/* inject a fake call to Coro::State::_cctx_init into the execution */ 981static int
982runops_trace (pTHX)
983{
984 COP *oldcop = 0;
985 int oldcxix = -2;
986
987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
988 {
989 PERL_ASYNC_CHECK ();
990
991 if (cctx_current->flags & CC_TRACE_ALL)
992 {
993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
994 {
995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
996 SV **bot, **top;
997 AV *av = newAV (); /* return values */
998 SV **cb;
999 dSP;
1000
1001 GV *gv = CvGV (cx->blk_sub.cv);
1002 SV *fullname = sv_2mortal (newSV (0));
1003 if (isGV (gv))
1004 gv_efullname3 (fullname, gv, 0);
1005
1006 bot = PL_stack_base + cx->blk_oldsp + 1;
1007 top = cx->blk_gimme == G_ARRAY ? SP + 1
1008 : cx->blk_gimme == G_SCALAR ? bot + 1
1009 : bot;
1010
1011 av_extend (av, top - bot);
1012 while (bot < top)
1013 av_push (av, SvREFCNT_inc_NN (*bot++));
1014
1015 PL_runops = RUNOPS_DEFAULT;
1016 ENTER;
1017 SAVETMPS;
1018 EXTEND (SP, 3);
1019 PUSHMARK (SP);
1020 PUSHs (&PL_sv_no);
1021 PUSHs (fullname);
1022 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1023 PUTBACK;
1024 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1025 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1026 SPAGAIN;
1027 FREETMPS;
1028 LEAVE;
1029 PL_runops = runops_trace;
1030 }
1031
1032 if (oldcop != PL_curcop)
1033 {
1034 oldcop = PL_curcop;
1035
1036 if (PL_curcop != &PL_compiling)
1037 {
1038 SV **cb;
1039
1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1041 {
1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1043
1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1045 {
1046 dSP;
1047 GV *gv = CvGV (cx->blk_sub.cv);
1048 SV *fullname = sv_2mortal (newSV (0));
1049
1050 if (isGV (gv))
1051 gv_efullname3 (fullname, gv, 0);
1052
1053 PL_runops = RUNOPS_DEFAULT;
1054 ENTER;
1055 SAVETMPS;
1056 EXTEND (SP, 3);
1057 PUSHMARK (SP);
1058 PUSHs (&PL_sv_yes);
1059 PUSHs (fullname);
1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1061 PUTBACK;
1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1064 SPAGAIN;
1065 FREETMPS;
1066 LEAVE;
1067 PL_runops = runops_trace;
1068 }
1069
1070 oldcxix = cxstack_ix;
1071 }
1072
1073 if (cctx_current->flags & CC_TRACE_LINE)
1074 {
1075 dSP;
1076
1077 PL_runops = RUNOPS_DEFAULT;
1078 ENTER;
1079 SAVETMPS;
1080 EXTEND (SP, 3);
1081 PL_runops = RUNOPS_DEFAULT;
1082 PUSHMARK (SP);
1083 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1084 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1085 PUTBACK;
1086 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1087 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1088 SPAGAIN;
1089 FREETMPS;
1090 LEAVE;
1091 PL_runops = runops_trace;
1092 }
1093 }
1094 }
1095 }
1096 }
1097
1098 TAINT_NOT;
1099 return 0;
1100}
1101
1102static struct CoroSLF cctx_ssl_frame;
1103
1104static void
1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1106{
1107 ta->prev = 0;
1108}
1109
1110static int
1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1112{
1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
578static void NOINLINE 1119static void NOINLINE
579prepare_cctx (coro_cctx *cctx) 1120cctx_prepare (pTHX)
580{ 1121{
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; 1122 PL_top_env = &PL_start_env;
608 1123
1124 if (cctx_current->flags & CC_TRACE)
1125 PL_runops = runops_trace;
1126
1127 /* we already must be executing an SLF op, there is no other valid way
1128 * that can lead to creation of a new cctx */
1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1131
1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1133 cctx_ssl_frame = slf_frame;
1134
1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1136 slf_frame.check = slf_check_set_stacklevel;
1137}
1138
1139/* the tail of transfer: execute stuff we can only do after a transfer */
1140INLINE void
1141transfer_tail (pTHX)
1142{
1143 free_coro_mortal (aTHX);
1144}
1145
1146/*
1147 * this is a _very_ stripped down perl interpreter ;)
1148 */
1149static void
1150cctx_run (void *arg)
1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
1158 dTHX;
1159
1160 /* normally we would need to skip the entersub here */
1161 /* not doing so will re-execute it, which is exactly what we want */
1162 /* PL_nop = PL_nop->op_next */
1163
609 /* inject call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
610 prepare_cctx ((coro_cctx *)arg); 1165 cctx_prepare (aTHX);
611 1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
612 /* somebody will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
613 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
614 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
615 1177
616 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1178 /*
617 abort (); 1179 * If perl-run returns we assume exit() was being called or the coro
1180 * fell off the end, which seems to be the only valid (non-bug)
1181 * reason for perl_run to return. We try to exit by jumping to the
1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1183 * coroutine as Coro has no such concept.
1184 * This actually isn't valid with the pthread backend, but OSes requiring
1185 * that backend are too broken to do it in a standards-compliant way.
1186 */
1187 PL_top_env = main_top_env;
1188 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1189 }
618} 1190}
619 1191
620static coro_cctx * 1192static coro_cctx *
621cctx_new () 1193cctx_new ()
622{ 1194{
623 coro_cctx *cctx; 1195 coro_cctx *cctx;
624 1196
625 ++cctx_count; 1197 ++cctx_count;
626
627 Newz (0, cctx, 1, coro_cctx); 1198 New (0, cctx, 1, coro_cctx);
1199
1200 cctx->gen = cctx_gen;
1201 cctx->flags = 0;
1202 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx only suitable as source */
1208static coro_cctx *
1209cctx_new_empty ()
1210{
1211 coro_cctx *cctx = cctx_new ();
1212
1213 cctx->sptr = 0;
1214 coro_create (&cctx->cctx, 0, 0, 0, 0);
1215
1216 return cctx;
1217}
1218
1219/* create a new cctx suitable as destination/running a perl interpreter */
1220static coro_cctx *
1221cctx_new_run ()
1222{
1223 coro_cctx *cctx = cctx_new ();
1224 void *stack_start;
1225 size_t stack_size;
628 1226
629#if HAVE_MMAP 1227#if HAVE_MMAP
630
631 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1228 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632 /* mmap supposedly does allocate-on-write for us */ 1229 /* 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); 1230 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
634 1231
635 if (cctx->sptr == (void *)-1) 1232 if (cctx->sptr != (void *)-1)
1233 {
1234 #if CORO_STACKGUARD
1235 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1236 #endif
1237 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1238 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1239 cctx->flags |= CC_MAPPED;
636 { 1240 }
1241 else
1242#endif
1243 {
1244 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1245 New (0, cctx->sptr, cctx_stacksize, long);
1246
1247 if (!cctx->sptr)
1248 {
637 perror ("FATAL: unable to mmap stack for coroutine"); 1249 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
638 _exit (EXIT_FAILURE); 1250 _exit (EXIT_FAILURE);
639 } 1251 }
640 1252
641# if STACKGUARD 1253 stack_start = cctx->sptr;
642 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1254 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 { 1255 }
652 perror ("FATAL: unable to malloc stack for coroutine");
653 _exit (EXIT_FAILURE);
654 }
655 1256
1257 #if CORO_USE_VALGRIND
1258 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
656#endif 1259 #endif
657 1260
658#if USE_VALGRIND 1261 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 1262
667 return cctx; 1263 return cctx;
668} 1264}
669 1265
670static void 1266static void
671cctx_destroy (coro_cctx *cctx) 1267cctx_destroy (coro_cctx *cctx)
672{ 1268{
673 if (!cctx) 1269 if (!cctx)
674 return; 1270 return;
675 1271
1272 assert (cctx != cctx_current);//D temporary
1273
676 --cctx_count; 1274 --cctx_count;
1275 coro_destroy (&cctx->cctx);
677 1276
678#if USE_VALGRIND 1277 /* coro_transfer creates new, empty cctx's */
1278 if (cctx->sptr)
1279 {
1280 #if CORO_USE_VALGRIND
679 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1281 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680#endif 1282 #endif
681 1283
682#if HAVE_MMAP 1284#if HAVE_MMAP
1285 if (cctx->flags & CC_MAPPED)
683 munmap (cctx->sptr, cctx->ssize); 1286 munmap (cctx->sptr, cctx->ssize);
684#else 1287 else
1288#endif
685 Safefree (cctx->sptr); 1289 Safefree (cctx->sptr);
686#endif 1290 }
687 1291
688 Safefree (cctx); 1292 Safefree (cctx);
689} 1293}
690 1294
1295/* wether this cctx should be destructed */
1296#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1297
691static coro_cctx * 1298static coro_cctx *
692cctx_get () 1299cctx_get (pTHX)
693{ 1300{
694 coro_cctx *cctx; 1301 while (expect_true (cctx_first))
695
696 if (cctx_first)
697 { 1302 {
698 cctx = cctx_first; 1303 coro_cctx *cctx = cctx_first;
699 cctx_first = cctx->next; 1304 cctx_first = cctx->next;
700 --cctx_idle; 1305 --cctx_idle;
701 } 1306
702 else 1307 if (expect_true (!CCTX_EXPIRED (cctx)))
703 { 1308 return cctx;
704 cctx = cctx_new (); 1309
705 PL_op = PL_op->op_next; 1310 cctx_destroy (cctx);
706 } 1311 }
707 1312
708 return cctx; 1313 return cctx_new_run ();
709} 1314}
710 1315
711static void 1316static void
712cctx_put (coro_cctx *cctx) 1317cctx_put (coro_cctx *cctx)
713{ 1318{
1319 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1320
714 /* free another cctx if overlimit */ 1321 /* free another cctx if overlimit */
715 if (cctx_idle >= MAX_IDLE_CCTX) 1322 if (expect_false (cctx_idle >= cctx_max_idle))
716 { 1323 {
717 coro_cctx *first = cctx_first; 1324 coro_cctx *first = cctx_first;
718 cctx_first = first->next; 1325 cctx_first = first->next;
719 --cctx_idle; 1326 --cctx_idle;
720 1327
721 assert (!first->inuse);
722 cctx_destroy (first); 1328 cctx_destroy (first);
723 } 1329 }
724 1330
725 ++cctx_idle; 1331 ++cctx_idle;
726 cctx->next = cctx_first; 1332 cctx->next = cctx_first;
727 cctx_first = cctx; 1333 cctx_first = cctx;
728} 1334}
729 1335
730/** coroutine switching *****************************************************/ 1336/** coroutine switching *****************************************************/
731 1337
732/* never call directly, always through the coro_state_transfer global variable */ 1338static void
733static void NOINLINE
734transfer (struct coro *prev, struct coro *next) 1339transfer_check (pTHX_ struct coro *prev, struct coro *next)
1340{
1341 /* TODO: throwing up here is considered harmful */
1342
1343 if (expect_true (prev != next))
1344 {
1345 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1347
1348 if (expect_false (next->flags & CF_RUNNING))
1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1350
1351 if (expect_false (next->flags & CF_DESTROYED))
1352 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1353
1354#if !PERL_VERSION_ATLEAST (5,10,0)
1355 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1356 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1357#endif
1358 }
1359}
1360
1361/* always use the TRANSFER macro */
1362static void NOINLINE /* noinline so we have a fixed stackframe */
1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
735{ 1364{
736 dSTACKLEVEL; 1365 dSTACKLEVEL;
737 1366
738 /* sometimes transfer is only called to set idle_sp */ 1367 /* sometimes transfer is only called to set idle_sp */
739 if (!next) 1368 if (expect_false (!prev))
740 { 1369 {
741 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1370 cctx_current->idle_sp = STACKLEVEL;
742 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1371 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
743 }
744 else if (prev != next)
745 { 1372 }
1373 else if (expect_true (prev != next))
1374 {
746 coro_cctx *prev__cctx; 1375 coro_cctx *cctx_prev;
747 1376
748 if (prev->flags & CF_NEW) 1377 if (expect_false (prev->flags & CF_NEW))
749 { 1378 {
750 /* create a new empty context */ 1379 /* create a new empty/source context */
751 Newz (0, prev->cctx, 1, coro_cctx);
752 prev->cctx->inuse = 1;
753 prev->flags &= ~CF_NEW; 1380 prev->flags &= ~CF_NEW;
754 prev->flags |= CF_RUNNING; 1381 prev->flags |= CF_RUNNING;
755 } 1382 }
756 1383
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; 1384 prev->flags &= ~CF_RUNNING;
768 next->flags |= CF_RUNNING; 1385 next->flags |= CF_RUNNING;
769 1386
770 LOCK; 1387 /* first get rid of the old state */
1388 save_perl (aTHX_ prev);
771 1389
772 if (next->flags & CF_NEW) 1390 if (expect_false (next->flags & CF_NEW))
773 { 1391 {
774 /* need to start coroutine */ 1392 /* need to start coroutine */
775 next->flags &= ~CF_NEW; 1393 next->flags &= ~CF_NEW;
776 /* first get rid of the old state */
777 save_perl (prev);
778 /* setup coroutine call */ 1394 /* setup coroutine call */
779 setup_coro (next); 1395 coro_setup (aTHX_ next);
780 /* need a new stack */
781 assert (!next->cctx);
782 } 1396 }
783 else 1397 else
1398 load_perl (aTHX_ next);
1399
1400 assert (!prev->cctx);//D temporary
1401
1402 /* possibly untie and reuse the cctx */
1403 if (expect_true (
1404 cctx_current->idle_sp == STACKLEVEL
1405 && !(cctx_current->flags & CC_TRACE)
1406 && !force_cctx
1407 ))
784 { 1408 {
785 /* coroutine already started */ 1409 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
786 save_perl (prev); 1410 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); 1411
1412 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1413 /* without this the next cctx_get might destroy the running cctx while still in use */
1414 if (expect_false (CCTX_EXPIRED (cctx_current)))
1415 if (expect_true (!next->cctx))
1416 next->cctx = cctx_get (aTHX);
1417
1418 cctx_put (cctx_current);
788 } 1419 }
1420 else
1421 prev->cctx = cctx_current;
789 1422
790 prev__cctx = prev->cctx; 1423 ++next->usecount;
791 1424
792 /* possibly "free" the cctx */ 1425 cctx_prev = cctx_current;
793 if (prev__cctx->idle_sp == STACKLEVEL) 1426 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1427
1428 next->cctx = 0;
1429
1430 if (expect_false (cctx_prev != cctx_current))
794 { 1431 {
795 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1432 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)); 1433 PL_top_env = cctx_current->top_env;
797 1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
798 prev->cctx = 0;
799
800 cctx_put (prev__cctx);
801 prev__cctx->inuse = 0;
802 } 1435 }
803 1436
804 if (!next->cctx) 1437 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 } 1438 }
821} 1439}
822 1440
823struct transfer_args 1441#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) 1442#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829 1443
830/** high level stuff ********************************************************/ 1444/** high level stuff ********************************************************/
831 1445
832static int 1446static int
833coro_state_destroy (struct coro *coro) 1447coro_state_destroy (pTHX_ struct coro *coro)
834{ 1448{
835 if (coro->flags & CF_DESTROYED) 1449 if (coro->flags & CF_DESTROYED)
836 return 0; 1450 return 0;
1451
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro);
837 1454
838 coro->flags |= CF_DESTROYED; 1455 coro->flags |= CF_DESTROYED;
839 1456
840 if (coro->flags & CF_READY) 1457 if (coro->flags & CF_READY)
841 { 1458 {
842 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1459 /* reduce nready, as destroying a ready coro effectively unreadies it */
843 /* alternative: look through all ready queues and remove the coro */ 1460 /* alternative: look through all ready queues and remove the coro */
844 LOCK;
845 --coro_nready; 1461 --coro_nready;
846 UNLOCK;
847 } 1462 }
848 else 1463 else
849 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1464 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
850 1465
851 if (coro->mainstack && coro->mainstack != main_mainstack) 1466 if (coro->mainstack && coro->mainstack != main_mainstack)
852 { 1467 {
853 struct coro temp; 1468 struct coro temp;
854 1469
855 assert (!(coro->flags & CF_RUNNING)); 1470 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
856 1471
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); 1472 save_perl (aTHX_ &temp);
864 load_perl (coro); 1473 load_perl (aTHX_ coro);
865 1474
866 coro_destroy_stacks (); 1475 coro_destruct (aTHX_ coro);
867 1476
868 load_perl (&temp); /* this will get rid of defsv etc.. */ 1477 load_perl (aTHX_ &temp);
869 1478
870 coro->mainstack = 0; 1479 coro->slot = 0;
871 } 1480 }
872 1481
873 cctx_destroy (coro->cctx); 1482 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv);
874 SvREFCNT_dec (coro->args); 1484 SvREFCNT_dec (coro->args);
1485 SvREFCNT_dec (CORO_THROW);
1486
1487 if (coro->next) coro->next->prev = coro->prev;
1488 if (coro->prev) coro->prev->next = coro->next;
1489 if (coro == coro_first) coro_first = coro->next;
875 1490
876 return 1; 1491 return 1;
877} 1492}
878 1493
879static int 1494static int
880coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1495coro_state_free (pTHX_ SV *sv, MAGIC *mg)
881{ 1496{
882 struct coro *coro = (struct coro *)mg->mg_ptr; 1497 struct coro *coro = (struct coro *)mg->mg_ptr;
883 mg->mg_ptr = 0; 1498 mg->mg_ptr = 0;
884 1499
1500 coro->hv = 0;
1501
885 if (--coro->refcnt < 0) 1502 if (--coro->refcnt < 0)
886 { 1503 {
887 coro_state_destroy (coro); 1504 coro_state_destroy (aTHX_ coro);
888 Safefree (coro); 1505 Safefree (coro);
889 } 1506 }
890 1507
891 return 0; 1508 return 0;
892} 1509}
… …
910#else 1527#else
911# define MGf_DUP 0 1528# define MGf_DUP 0
912#endif 1529#endif
913}; 1530};
914 1531
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 1532static void
938prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1533prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
939{ 1534{
940 ta->prev = SvSTATE (prev_sv); 1535 ta->prev = SvSTATE (prev_sv);
941 ta->next = SvSTATE (next_sv); 1536 ta->next = SvSTATE (next_sv);
1537 TRANSFER_CHECK (*ta);
942} 1538}
943 1539
944static void 1540static void
945api_transfer (SV *prev_sv, SV *next_sv) 1541api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
946{ 1542{
947 struct transfer_args ta; 1543 struct coro_transfer_args ta;
948 1544
949 prepare_transfer (&ta, prev_sv, next_sv); 1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
950 TRANSFER (ta); 1546 TRANSFER (ta, 1);
951} 1547}
952 1548
953static int 1549/*****************************************************************************/
954api_save (SV *coro_sv, int new_save) 1550/* gensub: simple closure generation utility */
955{
956 struct coro *coro = SvSTATE (coro_sv);
957 int old_save = coro->save;
958 1551
959 if (new_save >= 0) 1552#define GENSUB_ARG CvXSUBANY (cv).any_ptr
960 coro->save = new_save;
961 1553
962 return old_save; 1554/* create a closure from XS, returns a code reference */
1555/* the arg can be accessed via GENSUB_ARG from the callback */
1556/* the callback must use dXSARGS/XSRETURN */
1557static SV *
1558gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1559{
1560 CV *cv = (CV *)newSV (0);
1561
1562 sv_upgrade ((SV *)cv, SVt_PVCV);
1563
1564 CvANON_on (cv);
1565 CvISXSUB_on (cv);
1566 CvXSUB (cv) = xsub;
1567 GENSUB_ARG = arg;
1568
1569 return newRV_noinc ((SV *)cv);
963} 1570}
964 1571
965/** Coro ********************************************************************/ 1572/** Coro ********************************************************************/
966 1573
967static void 1574INLINE void
968coro_enq (SV *coro_sv) 1575coro_enq (pTHX_ struct coro *coro)
969{ 1576{
970 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1577 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
971} 1578}
972 1579
973static SV * 1580INLINE SV *
974coro_deq (int min_prio) 1581coro_deq (pTHX)
975{ 1582{
976 int prio = PRIO_MAX - PRIO_MIN; 1583 int prio;
977 1584
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; ) 1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
983 if (AvFILLp (coro_ready [prio]) >= 0) 1586 if (AvFILLp (coro_ready [prio]) >= 0)
984 return av_shift (coro_ready [prio]); 1587 return av_shift (coro_ready [prio]);
985 1588
986 return 0; 1589 return 0;
987} 1590}
988 1591
989static int 1592static int
990api_ready (SV *coro_sv) 1593api_ready (pTHX_ SV *coro_sv)
991{ 1594{
992 struct coro *coro; 1595 struct coro *coro;
993 1596 SV *sv_hook;
994 if (SvROK (coro_sv)) 1597 void (*xs_hook)(void);
995 coro_sv = SvRV (coro_sv);
996 1598
997 coro = SvSTATE (coro_sv); 1599 coro = SvSTATE (coro_sv);
998 1600
999 if (coro->flags & CF_READY) 1601 if (coro->flags & CF_READY)
1000 return 0; 1602 return 0;
1001 1603
1002 coro->flags |= CF_READY; 1604 coro->flags |= CF_READY;
1003 1605
1004 LOCK; 1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1005 coro_enq (SvREFCNT_inc (coro_sv)); 1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1608
1609 coro_enq (aTHX_ coro);
1006 ++coro_nready; 1610 ++coro_nready;
1007 UNLOCK; 1611
1612 if (sv_hook)
1613 {
1614 dSP;
1615
1616 ENTER;
1617 SAVETMPS;
1618
1619 PUSHMARK (SP);
1620 PUTBACK;
1621 call_sv (sv_hook, G_VOID | G_DISCARD);
1622
1623 FREETMPS;
1624 LEAVE;
1625 }
1626
1627 if (xs_hook)
1628 xs_hook ();
1008 1629
1009 return 1; 1630 return 1;
1010} 1631}
1011 1632
1012static int 1633static int
1013api_is_ready (SV *coro_sv) 1634api_is_ready (pTHX_ SV *coro_sv)
1014{ 1635{
1015 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1636 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1016} 1637}
1017 1638
1639/* expects to own a reference to next->hv */
1640INLINE void
1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1642{
1643 SV *prev_sv = SvRV (coro_current);
1644
1645 ta->prev = SvSTATE_hv (prev_sv);
1646 ta->next = next;
1647
1648 TRANSFER_CHECK (*ta);
1649
1650 SvRV_set (coro_current, (SV *)next->hv);
1651
1652 free_coro_mortal (aTHX);
1653 coro_mortal = prev_sv;
1654}
1655
1018static void 1656static void
1019prepare_schedule (struct transfer_args *ta) 1657prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1020{ 1658{
1021 SV *prev_sv, *next_sv;
1022
1023 for (;;) 1659 for (;;)
1024 { 1660 {
1025 LOCK;
1026 next_sv = coro_deq (PRIO_MIN); 1661 SV *next_sv = coro_deq (aTHX);
1027 1662
1663 if (expect_true (next_sv))
1664 {
1665 struct coro *next = SvSTATE_hv (next_sv);
1666
1667 /* cannot transfer to destroyed coros, skip and look for next */
1668 if (expect_false (next->flags & CF_DESTROYED))
1669 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1670 else
1671 {
1672 next->flags &= ~CF_READY;
1673 --coro_nready;
1674
1675 prepare_schedule_to (aTHX_ ta, next);
1676 break;
1677 }
1678 }
1679 else
1680 {
1028 /* nothing to schedule: call the idle handler */ 1681 /* nothing to schedule: call the idle handler */
1029 if (!next_sv) 1682 if (SvROK (sv_idle)
1683 && SvOBJECT (SvRV (sv_idle)))
1684 {
1685 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1686 api_ready (aTHX_ SvRV (sv_idle));
1687 --coro_nready;
1688 }
1689 else
1690 {
1691 dSP;
1692
1693 ENTER;
1694 SAVETMPS;
1695
1696 PUSHMARK (SP);
1697 PUTBACK;
1698 call_sv (sv_idle, G_VOID | G_DISCARD);
1699
1700 FREETMPS;
1701 LEAVE;
1702 }
1703 }
1704 }
1705}
1706
1707INLINE void
1708prepare_cede (pTHX_ struct coro_transfer_args *ta)
1709{
1710 api_ready (aTHX_ coro_current);
1711 prepare_schedule (aTHX_ ta);
1712}
1713
1714INLINE void
1715prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1716{
1717 SV *prev = SvRV (coro_current);
1718
1719 if (coro_nready)
1720 {
1721 prepare_schedule (aTHX_ ta);
1722 api_ready (aTHX_ prev);
1723 }
1724 else
1725 prepare_nop (aTHX_ ta);
1726}
1727
1728static void
1729api_schedule (pTHX)
1730{
1731 struct coro_transfer_args ta;
1732
1733 prepare_schedule (aTHX_ &ta);
1734 TRANSFER (ta, 1);
1735}
1736
1737static void
1738api_schedule_to (pTHX_ SV *coro_sv)
1739{
1740 struct coro_transfer_args ta;
1741 struct coro *next = SvSTATE (coro_sv);
1742
1743 SvREFCNT_inc_NN (coro_sv);
1744 prepare_schedule_to (aTHX_ &ta, next);
1745}
1746
1747static int
1748api_cede (pTHX)
1749{
1750 struct coro_transfer_args ta;
1751
1752 prepare_cede (aTHX_ &ta);
1753
1754 if (expect_true (ta.prev != ta.next))
1755 {
1756 TRANSFER (ta, 1);
1757 return 1;
1758 }
1759 else
1760 return 0;
1761}
1762
1763static int
1764api_cede_notself (pTHX)
1765{
1766 if (coro_nready)
1767 {
1768 struct coro_transfer_args ta;
1769
1770 prepare_cede_notself (aTHX_ &ta);
1771 TRANSFER (ta, 1);
1772 return 1;
1773 }
1774 else
1775 return 0;
1776}
1777
1778static void
1779api_trace (pTHX_ SV *coro_sv, int flags)
1780{
1781 struct coro *coro = SvSTATE (coro_sv);
1782
1783 if (coro->flags & CF_RUNNING)
1784 croak ("cannot enable tracing on a running coroutine, caught");
1785
1786 if (flags & CC_TRACE)
1787 {
1788 if (!coro->cctx)
1789 coro->cctx = cctx_new_run ();
1790 else if (!(coro->cctx->flags & CC_TRACE))
1791 croak ("cannot enable tracing on coroutine with custom stack, caught");
1792
1793 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1794 }
1795 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1796 {
1797 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1798
1799 if (coro->flags & CF_RUNNING)
1800 PL_runops = RUNOPS_DEFAULT;
1801 else
1802 coro->slot->runops = RUNOPS_DEFAULT;
1803 }
1804}
1805
1806static void
1807coro_call_on_destroy (pTHX_ struct coro *coro)
1808{
1809 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1810 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1811
1812 if (on_destroyp)
1813 {
1814 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1815
1816 while (AvFILLp (on_destroy) >= 0)
1817 {
1818 dSP; /* don't disturb outer sp */
1819 SV *cb = av_pop (on_destroy);
1820
1821 PUSHMARK (SP);
1822
1823 if (statusp)
1824 {
1825 int i;
1826 AV *status = (AV *)SvRV (*statusp);
1827 EXTEND (SP, AvFILLp (status) + 1);
1828
1829 for (i = 0; i <= AvFILLp (status); ++i)
1830 PUSHs (AvARRAY (status)[i]);
1831 }
1832
1833 PUTBACK;
1834 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1835 }
1836 }
1837}
1838
1839static void
1840slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 int i;
1843 HV *hv = (HV *)SvRV (coro_current);
1844 AV *av = newAV ();
1845
1846 av_extend (av, items - 1);
1847 for (i = 0; i < items; ++i)
1848 av_push (av, SvREFCNT_inc_NN (arg [i]));
1849
1850 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1851
1852 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1853 api_ready (aTHX_ sv_manager);
1854
1855 frame->prepare = prepare_schedule;
1856 frame->check = slf_check_repeat;
1857}
1858
1859/*****************************************************************************/
1860/* async pool handler */
1861
1862static int
1863slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1864{
1865 HV *hv = (HV *)SvRV (coro_current);
1866 struct coro *coro = (struct coro *)frame->data;
1867
1868 if (!coro->invoke_cb)
1869 return 1; /* loop till we have invoke */
1870 else
1871 {
1872 hv_store (hv, "desc", sizeof ("desc") - 1,
1873 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1874
1875 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1876
1877 {
1878 dSP;
1879 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1880 PUTBACK;
1881 }
1882
1883 SvREFCNT_dec (GvAV (PL_defgv));
1884 GvAV (PL_defgv) = coro->invoke_av;
1885 coro->invoke_av = 0;
1886
1887 return 0;
1888 }
1889}
1890
1891static void
1892slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1893{
1894 HV *hv = (HV *)SvRV (coro_current);
1895 struct coro *coro = SvSTATE_hv ((SV *)hv);
1896
1897 if (expect_true (coro->saved_deffh))
1898 {
1899 /* subsequent iteration */
1900 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1901 coro->saved_deffh = 0;
1902
1903 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1904 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1905 {
1906 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1907 coro->invoke_av = newAV ();
1908
1909 frame->prepare = prepare_nop;
1910 }
1911 else
1912 {
1913 av_clear (GvAV (PL_defgv));
1914 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1915
1916 coro->prio = 0;
1917
1918 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1919 api_trace (aTHX_ coro_current, 0);
1920
1921 frame->prepare = prepare_schedule;
1922 av_push (av_async_pool, SvREFCNT_inc (hv));
1923 }
1924 }
1925 else
1926 {
1927 /* first iteration, simply fall through */
1928 frame->prepare = prepare_nop;
1929 }
1930
1931 frame->check = slf_check_pool_handler;
1932 frame->data = (void *)coro;
1933}
1934
1935/*****************************************************************************/
1936/* rouse callback */
1937
1938#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1939
1940static void
1941coro_rouse_callback (pTHX_ CV *cv)
1942{
1943 dXSARGS;
1944 SV *data = (SV *)GENSUB_ARG;
1945
1946 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1947 {
1948 /* first call, set args */
1949 AV *av = newAV ();
1950 SV *coro = SvRV (data);
1951
1952 SvRV_set (data, (SV *)av);
1953 api_ready (aTHX_ coro);
1954 SvREFCNT_dec (coro);
1955
1956 /* better take a full copy of the arguments */
1957 while (items--)
1958 av_store (av, items, newSVsv (ST (items)));
1959 }
1960
1961 XSRETURN_EMPTY;
1962}
1963
1964static int
1965slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1966{
1967 SV *data = (SV *)frame->data;
1968
1969 if (CORO_THROW)
1970 return 0;
1971
1972 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1973 return 1;
1974
1975 /* now push all results on the stack */
1976 {
1977 dSP;
1978 AV *av = (AV *)SvRV (data);
1979 int i;
1980
1981 EXTEND (SP, AvFILLp (av) + 1);
1982 for (i = 0; i <= AvFILLp (av); ++i)
1983 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1984
1985 /* we have stolen the elements, so ste length to zero and free */
1986 AvFILLp (av) = -1;
1987 av_undef (av);
1988
1989 PUTBACK;
1990 }
1991
1992 return 0;
1993}
1994
1995static void
1996slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1997{
1998 SV *cb;
1999
2000 if (items)
2001 cb = arg [0];
2002 else
2003 {
2004 struct coro *coro = SvSTATE_current;
2005
2006 if (!coro->rouse_cb)
2007 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2008
2009 cb = sv_2mortal (coro->rouse_cb);
2010 coro->rouse_cb = 0;
2011 }
2012
2013 if (!SvROK (cb)
2014 || SvTYPE (SvRV (cb)) != SVt_PVCV
2015 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2016 croak ("Coro::rouse_wait called with illegal callback argument,");
2017
2018 {
2019 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2020 SV *data = (SV *)GENSUB_ARG;
2021
2022 frame->data = (void *)data;
2023 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2024 frame->check = slf_check_rouse_wait;
2025 }
2026}
2027
2028static SV *
2029coro_new_rouse_cb (pTHX)
2030{
2031 HV *hv = (HV *)SvRV (coro_current);
2032 struct coro *coro = SvSTATE_hv (hv);
2033 SV *data = newRV_inc ((SV *)hv);
2034 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2035
2036 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2037 SvREFCNT_dec (data); /* magicext increases the refcount */
2038
2039 SvREFCNT_dec (coro->rouse_cb);
2040 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2041
2042 return cb;
2043}
2044
2045/*****************************************************************************/
2046/* schedule-like-function opcode (SLF) */
2047
2048static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2049static const CV *slf_cv;
2050static SV **slf_argv;
2051static int slf_argc, slf_arga; /* count, allocated */
2052static I32 slf_ax; /* top of stack, for restore */
2053
2054/* this restores the stack in the case we patched the entersub, to */
2055/* recreate the stack frame as perl will on following calls */
2056/* since entersub cleared the stack */
2057static OP *
2058pp_restore (pTHX)
2059{
2060 int i;
2061 SV **SP = PL_stack_base + slf_ax;
2062
2063 PUSHMARK (SP);
2064
2065 EXTEND (SP, slf_argc + 1);
2066
2067 for (i = 0; i < slf_argc; ++i)
2068 PUSHs (sv_2mortal (slf_argv [i]));
2069
2070 PUSHs ((SV *)CvGV (slf_cv));
2071
2072 RETURNOP (slf_restore.op_first);
2073}
2074
2075static void
2076slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2077{
2078 SV **arg = (SV **)slf_frame.data;
2079
2080 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2081}
2082
2083static void
2084slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (items != 2)
2087 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2088
2089 frame->prepare = slf_prepare_transfer;
2090 frame->check = slf_check_nop;
2091 frame->data = (void *)arg; /* let's hope it will stay valid */
2092}
2093
2094static void
2095slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 frame->prepare = prepare_schedule;
2098 frame->check = slf_check_nop;
2099}
2100
2101static void
2102slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2103{
2104 struct coro *next = (struct coro *)slf_frame.data;
2105
2106 SvREFCNT_inc_NN (next->hv);
2107 prepare_schedule_to (aTHX_ ta, next);
2108}
2109
2110static void
2111slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 if (!items)
2114 croak ("Coro::schedule_to expects a coroutine argument, caught");
2115
2116 frame->data = (void *)SvSTATE (arg [0]);
2117 frame->prepare = slf_prepare_schedule_to;
2118 frame->check = slf_check_nop;
2119}
2120
2121static void
2122slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2123{
2124 api_ready (aTHX_ SvRV (coro_current));
2125
2126 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2127}
2128
2129static void
2130slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 frame->prepare = prepare_cede;
2133 frame->check = slf_check_nop;
2134}
2135
2136static void
2137slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2138{
2139 frame->prepare = prepare_cede_notself;
2140 frame->check = slf_check_nop;
2141}
2142
2143/*
2144 * these not obviously related functions are all rolled into one
2145 * function to increase chances that they all will call transfer with the same
2146 * stack offset
2147 * SLF stands for "schedule-like-function".
2148 */
2149static OP *
2150pp_slf (pTHX)
2151{
2152 I32 checkmark; /* mark SP to see how many elements check has pushed */
2153
2154 /* set up the slf frame, unless it has already been set-up */
2155 /* the latter happens when a new coro has been started */
2156 /* or when a new cctx was attached to an existing coroutine */
2157 if (expect_true (!slf_frame.prepare))
2158 {
2159 /* first iteration */
2160 dSP;
2161 SV **arg = PL_stack_base + TOPMARK + 1;
2162 int items = SP - arg; /* args without function object */
2163 SV *gv = *sp;
2164
2165 /* do a quick consistency check on the "function" object, and if it isn't */
2166 /* for us, divert to the real entersub */
2167 if (SvTYPE (gv) != SVt_PVGV
2168 || !GvCV (gv)
2169 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2170 return PL_ppaddr[OP_ENTERSUB](aTHX);
2171
2172 if (!(PL_op->op_flags & OPf_STACKED))
2173 {
2174 /* ampersand-form of call, use @_ instead of stack */
2175 AV *av = GvAV (PL_defgv);
2176 arg = AvARRAY (av);
2177 items = AvFILLp (av) + 1;
2178 }
2179
2180 /* now call the init function, which needs to set up slf_frame */
2181 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2182 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2183
2184 /* pop args */
2185 SP = PL_stack_base + POPMARK;
2186
2187 PUTBACK;
2188 }
2189
2190 /* now that we have a slf_frame, interpret it! */
2191 /* we use a callback system not to make the code needlessly */
2192 /* complicated, but so we can run multiple perl coros from one cctx */
2193
2194 do
2195 {
2196 struct coro_transfer_args ta;
2197
2198 slf_frame.prepare (aTHX_ &ta);
2199 TRANSFER (ta, 0);
2200
2201 checkmark = PL_stack_sp - PL_stack_base;
2202 }
2203 while (slf_frame.check (aTHX_ &slf_frame));
2204
2205 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2206
2207 /* exception handling */
2208 if (expect_false (CORO_THROW))
2209 {
2210 SV *exception = sv_2mortal (CORO_THROW);
2211
2212 CORO_THROW = 0;
2213 sv_setsv (ERRSV, exception);
2214 croak (0);
2215 }
2216
2217 /* return value handling - mostly like entersub */
2218 /* make sure we put something on the stack in scalar context */
2219 if (GIMME_V == G_SCALAR)
2220 {
2221 dSP;
2222 SV **bot = PL_stack_base + checkmark;
2223
2224 if (sp == bot) /* too few, push undef */
2225 bot [1] = &PL_sv_undef;
2226 else if (sp != bot + 1) /* too many, take last one */
2227 bot [1] = *sp;
2228
2229 SP = bot + 1;
2230
2231 PUTBACK;
2232 }
2233
2234 return NORMAL;
2235}
2236
2237static void
2238api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2239{
2240 int i;
2241 SV **arg = PL_stack_base + ax;
2242 int items = PL_stack_sp - arg + 1;
2243
2244 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2245
2246 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2247 && PL_op->op_ppaddr != pp_slf)
2248 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2249
2250 CvFLAGS (cv) |= CVf_SLF;
2251 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2252 slf_cv = cv;
2253
2254 /* we patch the op, and then re-run the whole call */
2255 /* we have to put the same argument on the stack for this to work */
2256 /* and this will be done by pp_restore */
2257 slf_restore.op_next = (OP *)&slf_restore;
2258 slf_restore.op_type = OP_CUSTOM;
2259 slf_restore.op_ppaddr = pp_restore;
2260 slf_restore.op_first = PL_op;
2261
2262 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2263
2264 if (PL_op->op_flags & OPf_STACKED)
2265 {
2266 if (items > slf_arga)
2267 {
2268 slf_arga = items;
2269 free (slf_argv);
2270 slf_argv = malloc (slf_arga * sizeof (SV *));
2271 }
2272
2273 slf_argc = items;
2274
2275 for (i = 0; i < items; ++i)
2276 slf_argv [i] = SvREFCNT_inc (arg [i]);
2277 }
2278 else
2279 slf_argc = 0;
2280
2281 PL_op->op_ppaddr = pp_slf;
2282 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2283
2284 PL_op = (OP *)&slf_restore;
2285}
2286
2287/*****************************************************************************/
2288/* PerlIO::cede */
2289
2290typedef struct
2291{
2292 PerlIOBuf base;
2293 NV next, every;
2294} PerlIOCede;
2295
2296static IV
2297PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2298{
2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2300
2301 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2302 self->next = nvtime () + self->every;
2303
2304 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2305}
2306
2307static SV *
2308PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2309{
2310 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2311
2312 return newSVnv (self->every);
2313}
2314
2315static IV
2316PerlIOCede_flush (pTHX_ PerlIO *f)
2317{
2318 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2319 double now = nvtime ();
2320
2321 if (now >= self->next)
2322 {
2323 api_cede (aTHX);
2324 self->next = now + self->every;
2325 }
2326
2327 return PerlIOBuf_flush (aTHX_ f);
2328}
2329
2330static PerlIO_funcs PerlIO_cede =
2331{
2332 sizeof(PerlIO_funcs),
2333 "cede",
2334 sizeof(PerlIOCede),
2335 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2336 PerlIOCede_pushed,
2337 PerlIOBuf_popped,
2338 PerlIOBuf_open,
2339 PerlIOBase_binmode,
2340 PerlIOCede_getarg,
2341 PerlIOBase_fileno,
2342 PerlIOBuf_dup,
2343 PerlIOBuf_read,
2344 PerlIOBuf_unread,
2345 PerlIOBuf_write,
2346 PerlIOBuf_seek,
2347 PerlIOBuf_tell,
2348 PerlIOBuf_close,
2349 PerlIOCede_flush,
2350 PerlIOBuf_fill,
2351 PerlIOBase_eof,
2352 PerlIOBase_error,
2353 PerlIOBase_clearerr,
2354 PerlIOBase_setlinebuf,
2355 PerlIOBuf_get_base,
2356 PerlIOBuf_bufsiz,
2357 PerlIOBuf_get_ptr,
2358 PerlIOBuf_get_cnt,
2359 PerlIOBuf_set_ptrcnt,
2360};
2361
2362/*****************************************************************************/
2363/* Coro::Semaphore & Coro::Signal */
2364
2365static SV *
2366coro_waitarray_new (pTHX_ int count)
2367{
2368 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2369 AV *av = newAV ();
2370 SV **ary;
2371
2372 /* unfortunately, building manually saves memory */
2373 Newx (ary, 2, SV *);
2374 AvALLOC (av) = ary;
2375 /*AvARRAY (av) = ary;*/
2376 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2377 AvMAX (av) = 1;
2378 AvFILLp (av) = 0;
2379 ary [0] = newSViv (count);
2380
2381 return newRV_noinc ((SV *)av);
2382}
2383
2384/* semaphore */
2385
2386static void
2387coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2388{
2389 SV *count_sv = AvARRAY (av)[0];
2390 IV count = SvIVX (count_sv);
2391
2392 count += adjust;
2393 SvIVX (count_sv) = count;
2394
2395 /* now wake up as many waiters as are expected to lock */
2396 while (count > 0 && AvFILLp (av) > 0)
2397 {
2398 SV *cb;
2399
2400 /* swap first two elements so we can shift a waiter */
2401 AvARRAY (av)[0] = AvARRAY (av)[1];
2402 AvARRAY (av)[1] = count_sv;
2403 cb = av_shift (av);
2404
2405 if (SvOBJECT (cb))
2406 {
2407 api_ready (aTHX_ cb);
2408 --count;
2409 }
2410 else if (SvTYPE (cb) == SVt_PVCV)
1030 { 2411 {
1031 dSP; 2412 dSP;
1032 UNLOCK;
1033
1034 ENTER;
1035 SAVETMPS;
1036
1037 PUSHMARK (SP); 2413 PUSHMARK (SP);
2414 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1038 PUTBACK; 2415 PUTBACK;
1039 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 2416 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1040
1041 FREETMPS;
1042 LEAVE;
1043 continue;
1044 } 2417 }
1045 2418
1046 ta->next = SvSTATE (next_sv); 2419 SvREFCNT_dec (cb);
2420 }
2421}
1047 2422
1048 /* cannot transfer to destroyed coros, skip and look for next */ 2423static void
1049 if (ta->next->flags & CF_DESTROYED) 2424coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2425{
2426 /* call $sem->adjust (0) to possibly wake up some other waiters */
2427 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2428}
2429
2430static int
2431slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2432{
2433 AV *av = (AV *)frame->data;
2434 SV *count_sv = AvARRAY (av)[0];
2435
2436 /* if we are about to throw, don't actually acquire the lock, just throw */
2437 if (CORO_THROW)
2438 return 0;
2439 else if (SvIVX (count_sv) > 0)
2440 {
2441 SvSTATE_current->on_destroy = 0;
2442
2443 if (acquire)
2444 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2445 else
2446 coro_semaphore_adjust (aTHX_ av, 0);
2447
2448 return 0;
2449 }
2450 else
2451 {
2452 int i;
2453 /* if we were woken up but can't down, we look through the whole */
2454 /* waiters list and only add us if we aren't in there already */
2455 /* this avoids some degenerate memory usage cases */
2456
2457 for (i = 1; i <= AvFILLp (av); ++i)
2458 if (AvARRAY (av)[i] == SvRV (coro_current))
2459 return 1;
2460
2461 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2462 return 1;
2463 }
2464}
2465
2466static int
2467slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2468{
2469 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2470}
2471
2472static int
2473slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2474{
2475 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2476}
2477
2478static void
2479slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 AV *av = (AV *)SvRV (arg [0]);
2482
2483 if (SvIVX (AvARRAY (av)[0]) > 0)
2484 {
2485 frame->data = (void *)av;
2486 frame->prepare = prepare_nop;
2487 }
2488 else
2489 {
2490 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2491
2492 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2493 frame->prepare = prepare_schedule;
2494
2495 /* to avoid race conditions when a woken-up coro gets terminated */
2496 /* we arrange for a temporary on_destroy that calls adjust (0) */
2497 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2498 }
2499}
2500
2501static void
2502slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2503{
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_down;
2506}
2507
2508static void
2509slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2510{
2511 if (items >= 2)
2512 {
2513 /* callback form */
2514 AV *av = (AV *)SvRV (arg [0]);
2515 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2516
2517 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2518
2519 if (SvIVX (AvARRAY (av)[0]) > 0)
2520 coro_semaphore_adjust (aTHX_ av, 0);
2521
2522 frame->prepare = prepare_nop;
2523 frame->check = slf_check_nop;
2524 }
2525 else
2526 {
2527 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2528 frame->check = slf_check_semaphore_wait;
2529 }
2530}
2531
2532/* signal */
2533
2534static void
2535coro_signal_wake (pTHX_ AV *av, int count)
2536{
2537 SvIVX (AvARRAY (av)[0]) = 0;
2538
2539 /* now signal count waiters */
2540 while (count > 0 && AvFILLp (av) > 0)
2541 {
2542 SV *cb;
2543
2544 /* swap first two elements so we can shift a waiter */
2545 cb = AvARRAY (av)[0];
2546 AvARRAY (av)[0] = AvARRAY (av)[1];
2547 AvARRAY (av)[1] = cb;
2548
2549 cb = av_shift (av);
2550
2551 api_ready (aTHX_ cb);
2552 sv_setiv (cb, 0); /* signal waiter */
2553 SvREFCNT_dec (cb);
2554
2555 --count;
2556 }
2557}
2558
2559static int
2560slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2561{
2562 /* if we are about to throw, also stop waiting */
2563 return SvROK ((SV *)frame->data) && !CORO_THROW;
2564}
2565
2566static void
2567slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2568{
2569 AV *av = (AV *)SvRV (arg [0]);
2570
2571 if (SvIVX (AvARRAY (av)[0]))
2572 {
2573 SvIVX (AvARRAY (av)[0]) = 0;
2574 frame->prepare = prepare_nop;
2575 frame->check = slf_check_nop;
2576 }
2577 else
2578 {
2579 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2580
2581 av_push (av, waiter);
2582
2583 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2584 frame->prepare = prepare_schedule;
2585 frame->check = slf_check_signal_wait;
2586 }
2587}
2588
2589/*****************************************************************************/
2590/* Coro::AIO */
2591
2592#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2593
2594/* helper storage struct */
2595struct io_state
2596{
2597 int errorno;
2598 I32 laststype; /* U16 in 5.10.0 */
2599 int laststatval;
2600 Stat_t statcache;
2601};
2602
2603static void
2604coro_aio_callback (pTHX_ CV *cv)
2605{
2606 dXSARGS;
2607 AV *state = (AV *)GENSUB_ARG;
2608 SV *coro = av_pop (state);
2609 SV *data_sv = newSV (sizeof (struct io_state));
2610
2611 av_extend (state, items - 1);
2612
2613 sv_upgrade (data_sv, SVt_PV);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616
2617 {
2618 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2619
2620 data->errorno = errno;
2621 data->laststype = PL_laststype;
2622 data->laststatval = PL_laststatval;
2623 data->statcache = PL_statcache;
2624 }
2625
2626 /* now build the result vector out of all the parameters and the data_sv */
2627 {
2628 int i;
2629
2630 for (i = 0; i < items; ++i)
2631 av_push (state, SvREFCNT_inc_NN (ST (i)));
2632 }
2633
2634 av_push (state, data_sv);
2635
2636 api_ready (aTHX_ coro);
2637 SvREFCNT_dec (coro);
2638 SvREFCNT_dec ((AV *)state);
2639}
2640
2641static int
2642slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2643{
2644 AV *state = (AV *)frame->data;
2645
2646 /* if we are about to throw, return early */
2647 /* this does not cancel the aio request, but at least */
2648 /* it quickly returns */
2649 if (CORO_THROW)
2650 return 0;
2651
2652 /* one element that is an RV? repeat! */
2653 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2654 return 1;
2655
2656 /* restore status */
2657 {
2658 SV *data_sv = av_pop (state);
2659 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2660
2661 errno = data->errorno;
2662 PL_laststype = data->laststype;
2663 PL_laststatval = data->laststatval;
2664 PL_statcache = data->statcache;
2665
2666 SvREFCNT_dec (data_sv);
2667 }
2668
2669 /* push result values */
2670 {
2671 dSP;
2672 int i;
2673
2674 EXTEND (SP, AvFILLp (state) + 1);
2675 for (i = 0; i <= AvFILLp (state); ++i)
2676 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2677
2678 PUTBACK;
2679 }
2680
2681 return 0;
2682}
2683
2684static void
2685slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2686{
2687 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2688 SV *coro_hv = SvRV (coro_current);
2689 struct coro *coro = SvSTATE_hv (coro_hv);
2690
2691 /* put our coroutine id on the state arg */
2692 av_push (state, SvREFCNT_inc_NN (coro_hv));
2693
2694 /* first see whether we have a non-zero priority and set it as AIO prio */
2695 if (coro->prio)
2696 {
2697 dSP;
2698
2699 static SV *prio_cv;
2700 static SV *prio_sv;
2701
2702 if (expect_false (!prio_cv))
1050 { 2703 {
1051 UNLOCK; 2704 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
1052 SvREFCNT_dec (next_sv); 2705 prio_sv = newSViv (0);
1053 /* coro_nready is already taken care of by destroy */
1054 continue;
1055 } 2706 }
1056 2707
1057 --coro_nready; 2708 PUSHMARK (SP);
1058 UNLOCK; 2709 sv_setiv (prio_sv, coro->prio);
1059 break; 2710 XPUSHs (prio_sv);
1060 }
1061 2711
1062 /* free this only after the transfer */ 2712 PUTBACK;
1063 prev_sv = SvRV (coro_current); 2713 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 { 2714 }
1088 SV *prev = SvRV (coro_current); 2715
1089 prepare_schedule (ta); 2716 /* now call the original request */
1090 api_ready (prev); 2717 {
1091 return 1; 2718 dSP;
2719 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2720 int i;
2721
2722 PUSHMARK (SP);
2723
2724 /* first push all args to the stack */
2725 EXTEND (SP, items + 1);
2726
2727 for (i = 0; i < items; ++i)
2728 PUSHs (arg [i]);
2729
2730 /* now push the callback closure */
2731 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2732
2733 /* now call the AIO function - we assume our request is uncancelable */
2734 PUTBACK;
2735 call_sv ((SV *)req, G_VOID | G_DISCARD);
1092 } 2736 }
1093 else
1094 return 0;
1095}
1096 2737
1097static void 2738 /* now that the requets is going, we loop toll we have a result */
1098api_schedule (void) 2739 frame->data = (void *)state;
1099{ 2740 frame->prepare = prepare_schedule;
1100 struct transfer_args ta; 2741 frame->check = slf_check_aio_req;
1101
1102 prepare_schedule (&ta);
1103 TRANSFER (ta);
1104} 2742}
1105 2743
1106static int 2744static void
1107api_cede (void) 2745coro_aio_req_xs (pTHX_ CV *cv)
1108{ 2746{
1109 struct transfer_args ta; 2747 dXSARGS;
1110 2748
1111 prepare_cede (&ta); 2749 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1112 2750
1113 if (ta.prev != ta.next) 2751 XSRETURN_EMPTY;
1114 {
1115 TRANSFER (ta);
1116 return 1;
1117 }
1118 else
1119 return 0;
1120} 2752}
1121 2753
1122static int 2754/*****************************************************************************/
1123api_cede_notself (void)
1124{
1125 struct transfer_args ta;
1126 2755
1127 if (prepare_cede_notself (&ta)) 2756#if CORO_CLONE
1128 { 2757# include "clone.c"
1129 TRANSFER (ta); 2758#endif
1130 return 1;
1131 }
1132 else
1133 return 0;
1134}
1135 2759
1136MODULE = Coro::State PACKAGE = Coro::State 2760MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1137 2761
1138PROTOTYPES: DISABLE 2762PROTOTYPES: DISABLE
1139 2763
1140BOOT: 2764BOOT:
1141{ 2765{
1142#ifdef USE_ITHREADS 2766#ifdef USE_ITHREADS
1143 MUTEX_INIT (&coro_mutex); 2767# if CORO_PTHREAD
2768 coro_thx = PERL_GET_CONTEXT;
2769# endif
1144#endif 2770#endif
1145 BOOT_PAGESIZE; 2771 BOOT_PAGESIZE;
1146 2772
2773 cctx_current = cctx_new_empty ();
2774
2775 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2776 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2777
2778 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2779 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2780 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2781
2782 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2783 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2784 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2785
1147 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2786 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1148 2787
2788 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2789 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1149 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2790 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)); 2791 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1154 2792
1155 main_mainstack = PL_mainstack; 2793 main_mainstack = PL_mainstack;
2794 main_top_env = PL_top_env;
1156 2795
2796 while (main_top_env->je_prev)
2797 main_top_env = main_top_env->je_prev;
2798
2799 {
2800 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2801
2802 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2803 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2804
2805 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2806 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2807 }
2808
1157 coroapi.ver = CORO_API_VERSION; 2809 coroapi.ver = CORO_API_VERSION;
2810 coroapi.rev = CORO_API_REVISION;
2811
1158 coroapi.transfer = api_transfer; 2812 coroapi.transfer = api_transfer;
2813
2814 coroapi.sv_state = SvSTATE_;
2815 coroapi.execute_slf = api_execute_slf;
2816 coroapi.prepare_nop = prepare_nop;
2817 coroapi.prepare_schedule = prepare_schedule;
2818 coroapi.prepare_cede = prepare_cede;
2819 coroapi.prepare_cede_notself = prepare_cede_notself;
2820
2821 {
2822 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2823
2824 if (!svp) croak ("Time::HiRes is required");
2825 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2826
2827 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2828 }
1159 2829
1160 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2830 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1161} 2831}
1162 2832
1163SV * 2833SV *
1164new (char *klass, ...) 2834new (char *klass, ...)
2835 ALIAS:
2836 Coro::new = 1
1165 CODE: 2837 CODE:
1166{ 2838{
1167 struct coro *coro; 2839 struct coro *coro;
2840 MAGIC *mg;
1168 HV *hv; 2841 HV *hv;
2842 CV *cb;
1169 int i; 2843 int i;
1170 2844
2845 if (items > 1)
2846 {
2847 cb = coro_sv_2cv (aTHX_ ST (1));
2848
2849 if (!ix)
2850 {
2851 if (CvISXSUB (cb))
2852 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2853
2854 if (!CvROOT (cb))
2855 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2856 }
2857 }
2858
1171 Newz (0, coro, 1, struct coro); 2859 Newz (0, coro, 1, struct coro);
1172 coro->args = newAV (); 2860 coro->args = newAV ();
1173 coro->save = CORO_SAVE_ALL;
1174 coro->flags = CF_NEW; 2861 coro->flags = CF_NEW;
1175 2862
2863 if (coro_first) coro_first->prev = coro;
2864 coro->next = coro_first;
2865 coro_first = coro;
2866
1176 hv = newHV (); 2867 coro->hv = hv = newHV ();
1177 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2868 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2869 mg->mg_flags |= MGf_DUP;
1178 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2870 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1179 2871
2872 if (items > 1)
2873 {
2874 av_extend (coro->args, items - 1 + ix - 1);
2875
2876 if (ix)
2877 {
2878 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2879 cb = cv_coro_run;
2880 }
2881
2882 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2883
1180 for (i = 1; i < items; i++) 2884 for (i = 2; i < items; i++)
1181 av_push (coro->args, newSVsv (ST (i))); 2885 av_push (coro->args, newSVsv (ST (i)));
2886 }
1182} 2887}
1183 OUTPUT: 2888 OUTPUT:
1184 RETVAL 2889 RETVAL
1185 2890
1186int 2891void
1187save (SV *coro, int new_save = -1) 2892transfer (...)
2893 PROTOTYPE: $$
1188 CODE: 2894 CODE:
1189 RETVAL = api_save (coro, new_save); 2895 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 2896
1240bool 2897bool
1241_destroy (SV *coro_sv) 2898_destroy (SV *coro_sv)
1242 CODE: 2899 CODE:
1243 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 2900 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1244 OUTPUT: 2901 OUTPUT:
1245 RETVAL 2902 RETVAL
1246 2903
1247void 2904void
1248_exit (code) 2905_exit (int code)
1249 int code
1250 PROTOTYPE: $ 2906 PROTOTYPE: $
1251 CODE: 2907 CODE:
1252 _exit (code); 2908 _exit (code);
1253 2909
2910SV *
2911clone (Coro::State coro)
2912 CODE:
2913{
2914#if CORO_CLONE
2915 struct coro *ncoro = coro_clone (coro);
2916 MAGIC *mg;
2917 /* TODO: too much duplication */
2918 ncoro->hv = newHV ();
2919 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2920 mg->mg_flags |= MGf_DUP;
2921 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2922#else
2923 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2924#endif
2925}
2926 OUTPUT:
2927 RETVAL
2928
2929int
2930cctx_stacksize (int new_stacksize = 0)
2931 PROTOTYPE: ;$
2932 CODE:
2933 RETVAL = cctx_stacksize;
2934 if (new_stacksize)
2935 {
2936 cctx_stacksize = new_stacksize;
2937 ++cctx_gen;
2938 }
2939 OUTPUT:
2940 RETVAL
2941
2942int
2943cctx_max_idle (int max_idle = 0)
2944 PROTOTYPE: ;$
2945 CODE:
2946 RETVAL = cctx_max_idle;
2947 if (max_idle > 1)
2948 cctx_max_idle = max_idle;
2949 OUTPUT:
2950 RETVAL
2951
1254int 2952int
1255cctx_count () 2953cctx_count ()
2954 PROTOTYPE:
1256 CODE: 2955 CODE:
1257 RETVAL = cctx_count; 2956 RETVAL = cctx_count;
1258 OUTPUT: 2957 OUTPUT:
1259 RETVAL 2958 RETVAL
1260 2959
1261int 2960int
1262cctx_idle () 2961cctx_idle ()
2962 PROTOTYPE:
1263 CODE: 2963 CODE:
1264 RETVAL = cctx_idle; 2964 RETVAL = cctx_idle;
1265 OUTPUT: 2965 OUTPUT:
1266 RETVAL 2966 RETVAL
1267 2967
2968void
2969list ()
2970 PROTOTYPE:
2971 PPCODE:
2972{
2973 struct coro *coro;
2974 for (coro = coro_first; coro; coro = coro->next)
2975 if (coro->hv)
2976 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2977}
2978
2979void
2980call (Coro::State coro, SV *coderef)
2981 ALIAS:
2982 eval = 1
2983 CODE:
2984{
2985 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2986 {
2987 struct coro temp;
2988
2989 if (!(coro->flags & CF_RUNNING))
2990 {
2991 PUTBACK;
2992 save_perl (aTHX_ &temp);
2993 load_perl (aTHX_ coro);
2994 }
2995
2996 {
2997 dSP;
2998 ENTER;
2999 SAVETMPS;
3000 PUTBACK;
3001 PUSHSTACK;
3002 PUSHMARK (SP);
3003
3004 if (ix)
3005 eval_sv (coderef, 0);
3006 else
3007 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3008
3009 POPSTACK;
3010 SPAGAIN;
3011 FREETMPS;
3012 LEAVE;
3013 PUTBACK;
3014 }
3015
3016 if (!(coro->flags & CF_RUNNING))
3017 {
3018 save_perl (aTHX_ coro);
3019 load_perl (aTHX_ &temp);
3020 SPAGAIN;
3021 }
3022 }
3023}
3024
3025SV *
3026is_ready (Coro::State coro)
3027 PROTOTYPE: $
3028 ALIAS:
3029 is_ready = CF_READY
3030 is_running = CF_RUNNING
3031 is_new = CF_NEW
3032 is_destroyed = CF_DESTROYED
3033 CODE:
3034 RETVAL = boolSV (coro->flags & ix);
3035 OUTPUT:
3036 RETVAL
3037
3038void
3039throw (Coro::State self, SV *throw = &PL_sv_undef)
3040 PROTOTYPE: $;$
3041 CODE:
3042{
3043 struct coro *current = SvSTATE_current;
3044 SV **throwp = self == current ? &CORO_THROW : &self->except;
3045 SvREFCNT_dec (*throwp);
3046 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3047}
3048
3049void
3050api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3051 PROTOTYPE: $;$
3052 C_ARGS: aTHX_ coro, flags
3053
3054SV *
3055has_cctx (Coro::State coro)
3056 PROTOTYPE: $
3057 CODE:
3058 /* maybe manage the running flag differently */
3059 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
3060 OUTPUT:
3061 RETVAL
3062
3063int
3064is_traced (Coro::State coro)
3065 PROTOTYPE: $
3066 CODE:
3067 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
3068 OUTPUT:
3069 RETVAL
3070
3071UV
3072rss (Coro::State coro)
3073 PROTOTYPE: $
3074 ALIAS:
3075 usecount = 1
3076 CODE:
3077 switch (ix)
3078 {
3079 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3080 case 1: RETVAL = coro->usecount; break;
3081 }
3082 OUTPUT:
3083 RETVAL
3084
3085void
3086force_cctx ()
3087 PROTOTYPE:
3088 CODE:
3089 cctx_current->idle_sp = 0;
3090
3091void
3092swap_defsv (Coro::State self)
3093 PROTOTYPE: $
3094 ALIAS:
3095 swap_defav = 1
3096 CODE:
3097 if (!self->slot)
3098 croak ("cannot swap state with coroutine that has no saved state,");
3099 else
3100 {
3101 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3102 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3103
3104 SV *tmp = *src; *src = *dst; *dst = tmp;
3105 }
3106
3107
1268MODULE = Coro::State PACKAGE = Coro 3108MODULE = Coro::State PACKAGE = Coro
1269 3109
1270BOOT: 3110BOOT:
1271{ 3111{
1272 int i; 3112 int i;
1273 3113
3114 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3115 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3116 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3117 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3118 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3119 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3120 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3121 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3122 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3123
3124 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3125 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3126 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3127 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
3128
1274 coro_stash = gv_stashpv ("Coro", TRUE); 3129 coro_stash = gv_stashpv ("Coro", TRUE);
1275 3130
1276 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3131 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1277 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3132 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1278 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3133 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1279 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3134 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1280 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3135 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1281 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3136 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1282 3137
1283 coro_current = get_sv ("Coro::current", FALSE);
1284 SvREADONLY_on (coro_current);
1285
1286 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3138 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1287 coro_ready[i] = newAV (); 3139 coro_ready[i] = newAV ();
1288 3140
1289 { 3141 {
1290 SV *sv = perl_get_sv("Coro::API", 1); 3142 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1291 3143
1292 coroapi.schedule = api_schedule; 3144 coroapi.schedule = api_schedule;
1293 coroapi.save = api_save; 3145 coroapi.schedule_to = api_schedule_to;
1294 coroapi.cede = api_cede; 3146 coroapi.cede = api_cede;
1295 coroapi.cede_notself = api_cede_notself; 3147 coroapi.cede_notself = api_cede_notself;
1296 coroapi.ready = api_ready; 3148 coroapi.ready = api_ready;
1297 coroapi.is_ready = api_is_ready; 3149 coroapi.is_ready = api_is_ready;
1298 coroapi.nready = &coro_nready; 3150 coroapi.nready = coro_nready;
1299 coroapi.current = coro_current; 3151 coroapi.current = coro_current;
1300 3152
1301 GCoroAPI = &coroapi; 3153 /*GCoroAPI = &coroapi;*/
1302 sv_setiv (sv, (IV)&coroapi); 3154 sv_setiv (sv, (IV)&coroapi);
1303 SvREADONLY_on (sv); 3155 SvREADONLY_on (sv);
1304 } 3156 }
1305} 3157}
3158
3159void
3160terminate (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3163
3164void
3165schedule (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3168
3169void
3170schedule_to (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3173
3174void
3175cede_to (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3178
3179void
3180cede (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_cede);
3183
3184void
3185cede_notself (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3188
3189void
3190_cancel (Coro::State self)
3191 CODE:
3192 coro_state_destroy (aTHX_ self);
3193 coro_call_on_destroy (aTHX_ self);
1306 3194
1307void 3195void
1308_set_current (SV *current) 3196_set_current (SV *current)
1309 PROTOTYPE: $ 3197 PROTOTYPE: $
1310 CODE: 3198 CODE:
1311 SvREFCNT_dec (SvRV (coro_current)); 3199 SvREFCNT_dec (SvRV (coro_current));
1312 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3200 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3201
3202void
3203_set_readyhook (SV *hook)
3204 PROTOTYPE: $
3205 CODE:
3206 SvREFCNT_dec (coro_readyhook);
3207 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1313 3208
1314int 3209int
1315prio (Coro::State coro, int newprio = 0) 3210prio (Coro::State coro, int newprio = 0)
3211 PROTOTYPE: $;$
1316 ALIAS: 3212 ALIAS:
1317 nice = 1 3213 nice = 1
1318 CODE: 3214 CODE:
1319{ 3215{
1320 RETVAL = coro->prio; 3216 RETVAL = coro->prio;
… …
1335 3231
1336SV * 3232SV *
1337ready (SV *self) 3233ready (SV *self)
1338 PROTOTYPE: $ 3234 PROTOTYPE: $
1339 CODE: 3235 CODE:
1340 RETVAL = boolSV (api_ready (self)); 3236 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: 3237 OUTPUT:
1350 RETVAL 3238 RETVAL
1351 3239
1352int 3240int
1353nready (...) 3241nready (...)
… …
1355 CODE: 3243 CODE:
1356 RETVAL = coro_nready; 3244 RETVAL = coro_nready;
1357 OUTPUT: 3245 OUTPUT:
1358 RETVAL 3246 RETVAL
1359 3247
1360MODULE = Coro::State PACKAGE = Coro::AIO 3248void
3249_pool_handler (...)
3250 CODE:
3251 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3252
3253void
3254async_pool (SV *cv, ...)
3255 PROTOTYPE: &@
3256 PPCODE:
3257{
3258 HV *hv = (HV *)av_pop (av_async_pool);
3259 AV *av = newAV ();
3260 SV *cb = ST (0);
3261 int i;
3262
3263 av_extend (av, items - 2);
3264 for (i = 1; i < items; ++i)
3265 av_push (av, SvREFCNT_inc_NN (ST (i)));
3266
3267 if ((SV *)hv == &PL_sv_undef)
3268 {
3269 PUSHMARK (SP);
3270 EXTEND (SP, 2);
3271 PUSHs (sv_Coro);
3272 PUSHs ((SV *)cv_pool_handler);
3273 PUTBACK;
3274 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3275 SPAGAIN;
3276
3277 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3278 }
3279
3280 {
3281 struct coro *coro = SvSTATE_hv (hv);
3282
3283 assert (!coro->invoke_cb);
3284 assert (!coro->invoke_av);
3285 coro->invoke_cb = SvREFCNT_inc (cb);
3286 coro->invoke_av = av;
3287 }
3288
3289 api_ready (aTHX_ (SV *)hv);
3290
3291 if (GIMME_V != G_VOID)
3292 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3293 else
3294 SvREFCNT_dec (hv);
3295}
1361 3296
1362SV * 3297SV *
1363_get_state () 3298rouse_cb ()
3299 PROTOTYPE:
1364 CODE: 3300 CODE:
1365{ 3301 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: 3302 OUTPUT:
1379 RETVAL 3303 RETVAL
1380 3304
1381void 3305void
1382_set_state (char *data_) 3306rouse_wait (...)
1383 PROTOTYPE: $ 3307 PROTOTYPE: ;$
3308 PPCODE:
3309 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3310
3311
3312MODULE = Coro::State PACKAGE = PerlIO::cede
3313
3314BOOT:
3315 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3316
3317
3318MODULE = Coro::State PACKAGE = Coro::Semaphore
3319
3320SV *
3321new (SV *klass, SV *count = 0)
1384 CODE: 3322 CODE:
1385{ 3323 RETVAL = sv_bless (
1386 struct io_state *data = (void *)data_; 3324 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3325 GvSTASH (CvGV (cv))
3326 );
3327 OUTPUT:
3328 RETVAL
1387 3329
1388 errno = data->errorno; 3330# helper for Coro::Channel
1389 PL_laststype = data->laststype; 3331SV *
1390 PL_laststatval = data->laststatval; 3332_alloc (int count)
1391 PL_statcache = data->statcache; 3333 CODE:
1392} 3334 RETVAL = coro_waitarray_new (aTHX_ count);
3335 OUTPUT:
3336 RETVAL
1393 3337
3338SV *
3339count (SV *self)
3340 CODE:
3341 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3342 OUTPUT:
3343 RETVAL
3344
3345void
3346up (SV *self, int adjust = 1)
3347 ALIAS:
3348 adjust = 1
3349 CODE:
3350 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3351
3352void
3353down (...)
3354 CODE:
3355 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3356
3357void
3358wait (...)
3359 CODE:
3360 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3361
3362void
3363try (SV *self)
3364 PPCODE:
3365{
3366 AV *av = (AV *)SvRV (self);
3367 SV *count_sv = AvARRAY (av)[0];
3368 IV count = SvIVX (count_sv);
3369
3370 if (count > 0)
3371 {
3372 --count;
3373 SvIVX (count_sv) = count;
3374 XSRETURN_YES;
3375 }
3376 else
3377 XSRETURN_NO;
3378}
3379
3380void
3381waiters (SV *self)
3382 PPCODE:
3383{
3384 AV *av = (AV *)SvRV (self);
3385 int wcount = AvFILLp (av) + 1 - 1;
3386
3387 if (GIMME_V == G_SCALAR)
3388 XPUSHs (sv_2mortal (newSViv (wcount)));
3389 else
3390 {
3391 int i;
3392 EXTEND (SP, wcount);
3393 for (i = 1; i <= wcount; ++i)
3394 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3395 }
3396}
3397
3398MODULE = Coro::State PACKAGE = Coro::Signal
3399
3400SV *
3401new (SV *klass)
3402 CODE:
3403 RETVAL = sv_bless (
3404 coro_waitarray_new (aTHX_ 0),
3405 GvSTASH (CvGV (cv))
3406 );
3407 OUTPUT:
3408 RETVAL
3409
3410void
3411wait (...)
3412 CODE:
3413 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3414
3415void
3416broadcast (SV *self)
3417 CODE:
3418{
3419 AV *av = (AV *)SvRV (self);
3420 coro_signal_wake (aTHX_ av, AvFILLp (av));
3421}
3422
3423void
3424send (SV *self)
3425 CODE:
3426{
3427 AV *av = (AV *)SvRV (self);
3428
3429 if (AvFILLp (av))
3430 coro_signal_wake (aTHX_ av, 1);
3431 else
3432 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3433}
3434
3435IV
3436awaited (SV *self)
3437 CODE:
3438 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3439 OUTPUT:
3440 RETVAL
3441
3442
3443MODULE = Coro::State PACKAGE = Coro::AnyEvent
3444
3445BOOT:
3446 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3447
3448void
3449_schedule (...)
3450 CODE:
3451{
3452 static int incede;
3453
3454 api_cede_notself (aTHX);
3455
3456 ++incede;
3457 while (coro_nready >= incede && api_cede (aTHX))
3458 ;
3459
3460 sv_setsv (sv_activity, &PL_sv_undef);
3461 if (coro_nready >= incede)
3462 {
3463 PUSHMARK (SP);
3464 PUTBACK;
3465 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3466 }
3467
3468 --incede;
3469}
3470
3471
3472MODULE = Coro::State PACKAGE = Coro::AIO
3473
3474void
3475_register (char *target, char *proto, SV *req)
3476 CODE:
3477{
3478 CV *req_cv = coro_sv_2cv (aTHX_ req);
3479 /* newXSproto doesn't return the CV on 5.8 */
3480 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3481 sv_setpv ((SV *)slf_cv, proto);
3482 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3483}
3484

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