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Comparing Coro/Coro/State.xs (file contents):
Revision 1.209 by root, Wed Oct 10 02:58:17 2007 UTC vs.
Revision 1.360 by root, Mon Jun 29 06:14:23 2009 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#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
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
54 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
55 61
56#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
57# ifndef PL_ppaddr 63# ifndef PL_ppaddr
58# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
59# endif 65# endif
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 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
77/* 5.8.7 */ 110/* 5.8.7 */
78#ifndef SvRV_set 111#ifndef SvRV_set
79# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
80#endif 113#endif
81 114
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91# undef CORO_STACKGUARD 116# undef CORO_STACKGUARD
92#endif 117#endif
93 118
94#ifndef CORO_STACKGUARD 119#ifndef CORO_STACKGUARD
… …
100# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
101#endif 126#endif
102 127
103/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
104 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
105#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
106#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
107 137
108#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
109 139
110#if __GNUC__ >= 3 140#if __GNUC__ >= 3
111# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr), (value))
143# define INLINE static inline
114#else 144#else
115# define attribute(x) 145# define attribute(x)
116# define BARRIER
117# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
118#endif 148#endif
119 149
120#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
122 152
123#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
124 154
125#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
126 157
127#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
128static perl_mutex coro_mutex; 159# if CORO_PTHREAD
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
130# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
131#else
132# define LOCK (void)0
133# define UNLOCK (void)0
134#endif 161# endif
162#endif
135 163
136#define strpair(const) const, sizeof (const) - 1 164#ifdef __linux
165# include <time.h> /* for timespec */
166# include <syscall.h> /* for SYS_* */
167# ifdef SYS_clock_gettime
168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
169# define CORO_CLOCK_MONOTONIC 1
170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
171# endif
172#endif
137 173
138/* helper storage struct for Coro::AIO */ 174static double (*nvtime)(); /* so why doesn't it take void? */
139struct io_state 175static void (*u2time)(pTHX_ UV ret[2]);
140{
141 int errorno;
142 I32 laststype;
143 int laststatval;
144 Stat_t statcache;
145};
146 176
177/* we hijack an hopefully unused CV flag for our purposes */
178#define CVf_SLF 0x4000
179static OP *pp_slf (pTHX);
180
181static U32 cctx_gen;
147static size_t coro_stacksize = CORO_STACKSIZE; 182static size_t cctx_stacksize = CORO_STACKSIZE;
148static struct CoroAPI coroapi; 183static struct CoroAPI coroapi;
149static AV *main_mainstack; /* used to differentiate between $main and others */ 184static AV *main_mainstack; /* used to differentiate between $main and others */
150static JMPENV *main_top_env; 185static JMPENV *main_top_env;
151static HV *coro_state_stash, *coro_stash; 186static HV *coro_state_stash, *coro_stash;
152static SV *coro_mortal; /* will be freed after next transfer */ 187static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
188
189static AV *av_destroy; /* destruction queue */
190static SV *sv_manager; /* the manager coro */
191static SV *sv_idle; /* $Coro::idle */
153 192
154static GV *irsgv; /* $/ */ 193static GV *irsgv; /* $/ */
155static GV *stdoutgv; /* *STDOUT */ 194static GV *stdoutgv; /* *STDOUT */
156 195static SV *rv_diehook;
196static SV *rv_warnhook;
157static HV *hv_sig; /* %SIG */ 197static HV *hv_sig; /* %SIG */
158static SV *sv_diehook;
159static SV *sv_warnhook;
160 198
161/* async_pool helper stuff */ 199/* async_pool helper stuff */
162static SV *sv_pool_rss; 200static SV *sv_pool_rss;
163static SV *sv_pool_size; 201static SV *sv_pool_size;
202static SV *sv_async_pool_idle; /* description string */
164static AV *av_async_pool; 203static AV *av_async_pool; /* idle pool */
204static SV *sv_Coro; /* class string */
205static CV *cv_pool_handler;
206static CV *cv_coro_state_new;
165 207
166static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */ 208/* Coro::AnyEvent */
209static SV *sv_activity;
210
211/* enable processtime/realtime profiling */
212static char enable_times;
213typedef U32 coro_ts[2];
214static coro_ts time_real, time_cpu;
215static char times_valid;
216
217static struct coro_cctx *cctx_first;
167static int cctx_count, cctx_idle[3]; 218static int cctx_count, cctx_idle;
168 219
169enum { 220enum {
170 CC_MAPPED = 0x01, 221 CC_MAPPED = 0x01,
171 CC_NOREUSE = 0x02, /* throw this away after tracing */ 222 CC_NOREUSE = 0x02, /* throw this away after tracing */
172 CC_TRACE = 0x04, 223 CC_TRACE = 0x04,
… …
174 CC_TRACE_LINE = 0x10, /* trace each statement */ 225 CC_TRACE_LINE = 0x10, /* trace each statement */
175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 226 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
176}; 227};
177 228
178/* this is a structure representing a c-level coroutine */ 229/* this is a structure representing a c-level coroutine */
179typedef struct coro_cctx { 230typedef struct coro_cctx
231{
180 struct coro_cctx *next; 232 struct coro_cctx *next;
181 233
182 /* the stack */ 234 /* the stack */
183 void *sptr; 235 void *sptr;
184 size_t ssize; 236 size_t ssize;
… …
187 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 239 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
188 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 240 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
189 JMPENV *top_env; 241 JMPENV *top_env;
190 coro_context cctx; 242 coro_context cctx;
191 243
244 U32 gen;
192#if CORO_USE_VALGRIND 245#if CORO_USE_VALGRIND
193 int valgrind_id; 246 int valgrind_id;
194#endif 247#endif
195 unsigned char flags; 248 unsigned char flags;
196} coro_cctx; 249} coro_cctx;
250
251coro_cctx *cctx_current; /* the currently running cctx */
252
253/*****************************************************************************/
197 254
198enum { 255enum {
199 CF_RUNNING = 0x0001, /* coroutine is running */ 256 CF_RUNNING = 0x0001, /* coroutine is running */
200 CF_READY = 0x0002, /* coroutine is ready */ 257 CF_READY = 0x0002, /* coroutine is ready */
201 CF_NEW = 0x0004, /* has never been switched to */ 258 CF_NEW = 0x0004, /* has never been switched to */
202 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 259 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
260 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
203}; 261};
204 262
205/* the structure where most of the perl state is stored, overlaid on the cxstack */ 263/* the structure where most of the perl state is stored, overlaid on the cxstack */
206typedef struct { 264typedef struct
265{
207 SV *defsv; 266 SV *defsv;
208 AV *defav; 267 AV *defav;
209 SV *errsv; 268 SV *errsv;
210 SV *irsgv; 269 SV *irsgv;
270 HV *hinthv;
211#define VAR(name,type) type name; 271#define VAR(name,type) type name;
212# include "state.h" 272# include "state.h"
213#undef VAR 273#undef VAR
214} perl_slots; 274} perl_slots;
215 275
216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 276#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217 277
218/* this is a structure representing a perl-level coroutine */ 278/* this is a structure representing a perl-level coroutine */
219struct coro { 279struct coro {
220 /* the c coroutine allocated to this perl coroutine, if any */ 280 /* the C coroutine allocated to this perl coroutine, if any */
221 coro_cctx *cctx; 281 coro_cctx *cctx;
222 int gimme;
223 282
224 /* process data */ 283 /* ready queue */
284 struct coro *next_ready;
285
286 /* state data */
287 struct CoroSLF slf_frame; /* saved slf frame */
225 AV *mainstack; 288 AV *mainstack;
226 perl_slots *slot; /* basically the saved sp */ 289 perl_slots *slot; /* basically the saved sp */
227 290
291 CV *startcv; /* the CV to execute */
228 AV *args; /* data associated with this coroutine (initial args) */ 292 AV *args; /* data associated with this coroutine (initial args) */
229 int refcnt; /* coroutines are refcounted, yes */ 293 int refcnt; /* coroutines are refcounted, yes */
230 int flags; /* CF_ flags */ 294 int flags; /* CF_ flags */
231 HV *hv; /* the perl hash associated with this coro, if any */ 295 HV *hv; /* the perl hash associated with this coro, if any */
296 void (*on_destroy)(pTHX_ struct coro *coro);
232 297
233 /* statistics */ 298 /* statistics */
234 int usecount; /* number of transfers to this coro */ 299 int usecount; /* number of transfers to this coro */
235 300
236 /* coro process data */ 301 /* coro process data */
237 int prio; 302 int prio;
238 SV *throw; /* exception to be thrown */ 303 SV *except; /* exception to be thrown */
304 SV *rouse_cb;
239 305
240 /* async_pool */ 306 /* async_pool */
241 SV *saved_deffh; 307 SV *saved_deffh;
308 SV *invoke_cb;
309 AV *invoke_av;
310
311 /* on_enter/on_leave */
312 AV *on_enter;
313 AV *on_leave;
314
315 /* times */
316 coro_ts t_cpu, t_real;
242 317
243 /* linked list */ 318 /* linked list */
244 struct coro *next, *prev; 319 struct coro *next, *prev;
245}; 320};
246 321
247typedef struct coro *Coro__State; 322typedef struct coro *Coro__State;
248typedef struct coro *Coro__State_or_hashref; 323typedef struct coro *Coro__State_or_hashref;
249 324
325/* the following variables are effectively part of the perl context */
326/* and get copied between struct coro and these variables */
327/* the mainr easonw e don't support windows process emulation */
328static struct CoroSLF slf_frame; /* the current slf frame */
329
250/** Coro ********************************************************************/ 330/** Coro ********************************************************************/
251 331
252#define PRIO_MAX 3 332#define CORO_PRIO_MAX 3
253#define PRIO_HIGH 1 333#define CORO_PRIO_HIGH 1
254#define PRIO_NORMAL 0 334#define CORO_PRIO_NORMAL 0
255#define PRIO_LOW -1 335#define CORO_PRIO_LOW -1
256#define PRIO_IDLE -3 336#define CORO_PRIO_IDLE -3
257#define PRIO_MIN -4 337#define CORO_PRIO_MIN -4
258 338
259/* for Coro.pm */ 339/* for Coro.pm */
260static SV *coro_current; 340static SV *coro_current;
261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 341static SV *coro_readyhook;
262static int coro_nready; 342static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
343static CV *cv_coro_run, *cv_coro_terminate;
263static struct coro *coro_first; 344static struct coro *coro_first;
345#define coro_nready coroapi.nready
264 346
265/** lowlevel stuff **********************************************************/ 347/** lowlevel stuff **********************************************************/
266 348
267static SV * 349static SV *
268coro_get_sv (const char *name, int create) 350coro_get_sv (pTHX_ const char *name, int create)
269{ 351{
270#if PERL_VERSION_ATLEAST (5,9,0) 352#if PERL_VERSION_ATLEAST (5,10,0)
271 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 353 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
272 get_sv (name, create); 354 get_sv (name, create);
273#endif 355#endif
274 return get_sv (name, create); 356 return get_sv (name, create);
275} 357}
276 358
277static AV * 359static AV *
278coro_get_av (const char *name, int create) 360coro_get_av (pTHX_ const char *name, int create)
279{ 361{
280#if PERL_VERSION_ATLEAST (5,9,0) 362#if PERL_VERSION_ATLEAST (5,10,0)
281 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 363 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
282 get_av (name, create); 364 get_av (name, create);
283#endif 365#endif
284 return get_av (name, create); 366 return get_av (name, create);
285} 367}
286 368
287static HV * 369static HV *
288coro_get_hv (const char *name, int create) 370coro_get_hv (pTHX_ const char *name, int create)
289{ 371{
290#if PERL_VERSION_ATLEAST (5,9,0) 372#if PERL_VERSION_ATLEAST (5,10,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 373 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_hv (name, create); 374 get_hv (name, create);
293#endif 375#endif
294 return get_hv (name, create); 376 return get_hv (name, create);
295} 377}
296 378
379/* may croak */
380INLINE CV *
381coro_sv_2cv (pTHX_ SV *sv)
382{
383 HV *st;
384 GV *gvp;
385 CV *cv = sv_2cv (sv, &st, &gvp, 0);
386
387 if (!cv)
388 croak ("code reference expected");
389
390 return cv;
391}
392
393INLINE void
394coro_times_update ()
395{
396#ifdef coro_clock_gettime
397 struct timespec ts;
398
399 ts.tv_sec = ts.tv_nsec = 0;
400 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
401 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
402
403 ts.tv_sec = ts.tv_nsec = 0;
404 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
405 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
406#else
407 UV tv[2];
408
409 u2time (aTHX_ &tv);
410 time_real [0] = tv [0];
411 time_real [1] = tv [1] * 1000;
412#endif
413}
414
415INLINE void
416coro_times_add (struct coro *c)
417{
418 c->t_real [1] += time_real [1];
419 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
420 c->t_real [0] += time_real [0];
421
422 c->t_cpu [1] += time_cpu [1];
423 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
424 c->t_cpu [0] += time_cpu [0];
425}
426
427INLINE void
428coro_times_sub (struct coro *c)
429{
430 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
431 c->t_real [1] -= time_real [1];
432 c->t_real [0] -= time_real [0];
433
434 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
435 c->t_cpu [1] -= time_cpu [1];
436 c->t_cpu [0] -= time_cpu [0];
437}
438
439/*****************************************************************************/
440/* magic glue */
441
442#define CORO_MAGIC_type_cv 26
443#define CORO_MAGIC_type_state PERL_MAGIC_ext
444
445#define CORO_MAGIC_NN(sv, type) \
446 (expect_true (SvMAGIC (sv)->mg_type == type) \
447 ? SvMAGIC (sv) \
448 : mg_find (sv, type))
449
450#define CORO_MAGIC(sv, type) \
451 (expect_true (SvMAGIC (sv)) \
452 ? CORO_MAGIC_NN (sv, type) \
453 : 0)
454
455#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
456#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
457
458INLINE struct coro *
459SvSTATE_ (pTHX_ SV *coro)
460{
461 HV *stash;
462 MAGIC *mg;
463
464 if (SvROK (coro))
465 coro = SvRV (coro);
466
467 if (expect_false (SvTYPE (coro) != SVt_PVHV))
468 croak ("Coro::State object required");
469
470 stash = SvSTASH (coro);
471 if (expect_false (stash != coro_stash && stash != coro_state_stash))
472 {
473 /* very slow, but rare, check */
474 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
475 croak ("Coro::State object required");
476 }
477
478 mg = CORO_MAGIC_state (coro);
479 return (struct coro *)mg->mg_ptr;
480}
481
482#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
483
484/* faster than SvSTATE, but expects a coroutine hv */
485#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
486#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
487
488/*****************************************************************************/
489/* padlist management and caching */
490
297static AV * 491static AV *
298coro_clone_padlist (pTHX_ CV *cv) 492coro_derive_padlist (pTHX_ CV *cv)
299{ 493{
300 AV *padlist = CvPADLIST (cv); 494 AV *padlist = CvPADLIST (cv);
301 AV *newpadlist, *newpad; 495 AV *newpadlist, *newpad;
302 496
303 newpadlist = newAV (); 497 newpadlist = newAV ();
304 AvREAL_off (newpadlist); 498 AvREAL_off (newpadlist);
305#if PERL_VERSION_ATLEAST (5,9,0) 499#if PERL_VERSION_ATLEAST (5,10,0)
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 500 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
307#else 501#else
308 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 502 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
309#endif 503#endif
310 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 504 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
311 --AvFILLp (padlist); 505 --AvFILLp (padlist);
312 506
313 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 507 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
314 av_store (newpadlist, 1, (SV *)newpad); 508 av_store (newpadlist, 1, (SV *)newpad);
315 509
316 return newpadlist; 510 return newpadlist;
317} 511}
318 512
319static void 513static void
320free_padlist (pTHX_ AV *padlist) 514free_padlist (pTHX_ AV *padlist)
321{ 515{
322 /* may be during global destruction */ 516 /* may be during global destruction */
323 if (SvREFCNT (padlist)) 517 if (!IN_DESTRUCT)
324 { 518 {
325 I32 i = AvFILLp (padlist); 519 I32 i = AvFILLp (padlist);
326 while (i >= 0) 520
521 while (i > 0) /* special-case index 0 */
327 { 522 {
328 SV **svp = av_fetch (padlist, i--, FALSE); 523 /* we try to be extra-careful here */
329 if (svp) 524 AV *av = (AV *)AvARRAY (padlist)[i--];
330 { 525 I32 j = AvFILLp (av);
331 SV *sv; 526
332 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 527 while (j >= 0)
528 SvREFCNT_dec (AvARRAY (av)[j--]);
529
530 AvFILLp (av) = -1;
333 SvREFCNT_dec (sv); 531 SvREFCNT_dec (av);
334
335 SvREFCNT_dec (*svp);
336 }
337 } 532 }
338 533
534 SvREFCNT_dec (AvARRAY (padlist)[0]);
535
536 AvFILLp (padlist) = -1;
339 SvREFCNT_dec ((SV*)padlist); 537 SvREFCNT_dec ((SV*)padlist);
340 } 538 }
341} 539}
342 540
343static int 541static int
344coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 542coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
345{ 543{
346 AV *padlist; 544 AV *padlist;
347 AV *av = (AV *)mg->mg_obj; 545 AV *av = (AV *)mg->mg_obj;
546
547 /* perl manages to free our internal AV and _then_ call us */
548 if (IN_DESTRUCT)
549 return;
348 550
349 /* casting is fun. */ 551 /* casting is fun. */
350 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 552 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
351 free_padlist (aTHX_ padlist); 553 free_padlist (aTHX_ padlist);
352 554
353 SvREFCNT_dec (av); 555 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
354 556
355 return 0; 557 return 0;
356} 558}
357 559
358#define PERL_MAGIC_coro PERL_MAGIC_ext 560static MGVTBL coro_cv_vtbl = {
359 561 0, 0, 0, 0,
360static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 562 coro_cv_free
361 563};
362#define CORO_MAGIC(cv) \
363 SvMAGIC (cv) \
364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
365 ? SvMAGIC (cv) \
366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
367 : 0
368
369static struct coro *
370SvSTATE_ (pTHX_ SV *coro)
371{
372 HV *stash;
373 MAGIC *mg;
374
375 if (SvROK (coro))
376 coro = SvRV (coro);
377
378 if (expect_false (SvTYPE (coro) != SVt_PVHV))
379 croak ("Coro::State object required");
380
381 stash = SvSTASH (coro);
382 if (expect_false (stash != coro_stash && stash != coro_state_stash))
383 {
384 /* very slow, but rare, check */
385 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386 croak ("Coro::State object required");
387 }
388
389 mg = CORO_MAGIC (coro);
390 return (struct coro *)mg->mg_ptr;
391}
392
393#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394 564
395/* the next two functions merely cache the padlists */ 565/* the next two functions merely cache the padlists */
396static void 566static void
397get_padlist (pTHX_ CV *cv) 567get_padlist (pTHX_ CV *cv)
398{ 568{
399 MAGIC *mg = CORO_MAGIC (cv); 569 MAGIC *mg = CORO_MAGIC_cv (cv);
400 AV *av; 570 AV *av;
401 571
402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 572 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 573 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
404 else 574 else
405 { 575 {
406#if CORO_PREFER_PERL_FUNCTIONS 576#if CORO_PREFER_PERL_FUNCTIONS
407 /* this is probably cleaner, but also slower? */ 577 /* this is probably cleaner? but also slower! */
578 /* in practise, it seems to be less stable */
408 CV *cp = Perl_cv_clone (cv); 579 CV *cp = Perl_cv_clone (aTHX_ cv);
409 CvPADLIST (cv) = CvPADLIST (cp); 580 CvPADLIST (cv) = CvPADLIST (cp);
410 CvPADLIST (cp) = 0; 581 CvPADLIST (cp) = 0;
411 SvREFCNT_dec (cp); 582 SvREFCNT_dec (cp);
412#else 583#else
413 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 584 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
414#endif 585#endif
415 } 586 }
416} 587}
417 588
418static void 589static void
419put_padlist (pTHX_ CV *cv) 590put_padlist (pTHX_ CV *cv)
420{ 591{
421 MAGIC *mg = CORO_MAGIC (cv); 592 MAGIC *mg = CORO_MAGIC_cv (cv);
422 AV *av; 593 AV *av;
423 594
424 if (expect_false (!mg)) 595 if (expect_false (!mg))
425 { 596 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
426 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
427 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
428 mg->mg_virtual = &vtbl_coro;
429 mg->mg_obj = (SV *)newAV ();
430 }
431 597
432 av = (AV *)mg->mg_obj; 598 av = (AV *)mg->mg_obj;
433 599
434 if (expect_false (AvFILLp (av) >= AvMAX (av))) 600 if (expect_false (AvFILLp (av) >= AvMAX (av)))
435 av_extend (av, AvMAX (av) + 1); 601 av_extend (av, AvFILLp (av) + 1);
436 602
437 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 603 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
438} 604}
439 605
440/** load & save, init *******************************************************/ 606/** load & save, init *******************************************************/
607
608static void
609on_enterleave_call (pTHX_ SV *cb);
441 610
442static void 611static void
443load_perl (pTHX_ Coro__State c) 612load_perl (pTHX_ Coro__State c)
444{ 613{
445 perl_slots *slot = c->slot; 614 perl_slots *slot = c->slot;
446 c->slot = 0; 615 c->slot = 0;
447 616
448 PL_mainstack = c->mainstack; 617 PL_mainstack = c->mainstack;
449 618
450 GvSV (PL_defgv) = slot->defsv; 619 GvSV (PL_defgv) = slot->defsv;
451 GvAV (PL_defgv) = slot->defav; 620 GvAV (PL_defgv) = slot->defav;
452 GvSV (PL_errgv) = slot->errsv; 621 GvSV (PL_errgv) = slot->errsv;
453 GvSV (irsgv) = slot->irsgv; 622 GvSV (irsgv) = slot->irsgv;
623 GvHV (PL_hintgv) = slot->hinthv;
454 624
455 #define VAR(name,type) PL_ ## name = slot->name; 625 #define VAR(name,type) PL_ ## name = slot->name;
456 # include "state.h" 626 # include "state.h"
457 #undef VAR 627 #undef VAR
458
459 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
460 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
461 628
462 { 629 {
463 dSP; 630 dSP;
464 631
465 CV *cv; 632 CV *cv;
… …
472 CvPADLIST (cv) = (AV *)POPs; 639 CvPADLIST (cv) = (AV *)POPs;
473 } 640 }
474 641
475 PUTBACK; 642 PUTBACK;
476 } 643 }
644
645 slf_frame = c->slf_frame;
646 CORO_THROW = c->except;
647
648 if (expect_false (enable_times))
649 {
650 if (expect_false (!times_valid))
651 coro_times_update ();
652
653 coro_times_sub (c);
654 }
655
656 if (expect_false (c->on_enter))
657 {
658 int i;
659
660 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
661 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
662 }
477} 663}
478 664
479static void 665static void
480save_perl (pTHX_ Coro__State c) 666save_perl (pTHX_ Coro__State c)
481{ 667{
668 if (expect_false (c->on_leave))
669 {
670 int i;
671
672 for (i = AvFILLp (c->on_leave); i >= 0; --i)
673 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
674 }
675
676 times_valid = 0;
677
678 if (expect_false (enable_times))
679 {
680 coro_times_update (); times_valid = 1;
681 coro_times_add (c);
682 }
683
684 c->except = CORO_THROW;
685 c->slf_frame = slf_frame;
686
482 { 687 {
483 dSP; 688 dSP;
484 I32 cxix = cxstack_ix; 689 I32 cxix = cxstack_ix;
485 PERL_CONTEXT *ccstk = cxstack; 690 PERL_CONTEXT *ccstk = cxstack;
486 PERL_SI *top_si = PL_curstackinfo; 691 PERL_SI *top_si = PL_curstackinfo;
… …
496 { 701 {
497 while (expect_true (cxix >= 0)) 702 while (expect_true (cxix >= 0))
498 { 703 {
499 PERL_CONTEXT *cx = &ccstk[cxix--]; 704 PERL_CONTEXT *cx = &ccstk[cxix--];
500 705
501 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 706 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
502 { 707 {
503 CV *cv = cx->blk_sub.cv; 708 CV *cv = cx->blk_sub.cv;
504 709
505 if (expect_true (CvDEPTH (cv))) 710 if (expect_true (CvDEPTH (cv)))
506 { 711 {
507 EXTEND (SP, 3); 712 EXTEND (SP, 3);
508 PUSHs ((SV *)CvPADLIST (cv)); 713 PUSHs ((SV *)CvPADLIST (cv));
509 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 714 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
510 PUSHs ((SV *)cv); 715 PUSHs ((SV *)cv);
511 716
512 CvDEPTH (cv) = 0; 717 CvDEPTH (cv) = 0;
513 get_padlist (aTHX_ cv); 718 get_padlist (aTHX_ cv);
514 } 719 }
… …
541 c->mainstack = PL_mainstack; 746 c->mainstack = PL_mainstack;
542 747
543 { 748 {
544 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 749 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
545 750
546 slot->defav = GvAV (PL_defgv); 751 slot->defav = GvAV (PL_defgv);
547 slot->defsv = DEFSV; 752 slot->defsv = DEFSV;
548 slot->errsv = ERRSV; 753 slot->errsv = ERRSV;
549 slot->irsgv = GvSV (irsgv); 754 slot->irsgv = GvSV (irsgv);
755 slot->hinthv = GvHV (PL_hintgv);
550 756
551 #define VAR(name,type) slot->name = PL_ ## name; 757 #define VAR(name,type) slot->name = PL_ ## name;
552 # include "state.h" 758 # include "state.h"
553 #undef VAR 759 #undef VAR
554 } 760 }
555} 761}
556 762
557/* 763/*
558 * allocate various perl stacks. This is an exact copy 764 * allocate various perl stacks. This is almost an exact copy
559 * of perl.c:init_stacks, except that it uses less memory 765 * of perl.c:init_stacks, except that it uses less memory
560 * on the (sometimes correct) assumption that coroutines do 766 * on the (sometimes correct) assumption that coroutines do
561 * not usually need a lot of stackspace. 767 * not usually need a lot of stackspace.
562 */ 768 */
563#if CORO_PREFER_PERL_FUNCTIONS 769#if CORO_PREFER_PERL_FUNCTIONS
564# define coro_init_stacks init_stacks 770# define coro_init_stacks(thx) init_stacks ()
565#else 771#else
566static void 772static void
567coro_init_stacks (pTHX) 773coro_init_stacks (pTHX)
568{ 774{
569 PL_curstackinfo = new_stackinfo(32, 8); 775 PL_curstackinfo = new_stackinfo(32, 8);
… …
594 800
595 New(54,PL_savestack,24,ANY); 801 New(54,PL_savestack,24,ANY);
596 PL_savestack_ix = 0; 802 PL_savestack_ix = 0;
597 PL_savestack_max = 24; 803 PL_savestack_max = 24;
598 804
599#if !PERL_VERSION_ATLEAST (5,9,0) 805#if !PERL_VERSION_ATLEAST (5,10,0)
600 New(54,PL_retstack,4,OP*); 806 New(54,PL_retstack,4,OP*);
601 PL_retstack_ix = 0; 807 PL_retstack_ix = 0;
602 PL_retstack_max = 4; 808 PL_retstack_max = 4;
603#endif 809#endif
604} 810}
… …
606 812
607/* 813/*
608 * destroy the stacks, the callchain etc... 814 * destroy the stacks, the callchain etc...
609 */ 815 */
610static void 816static void
611coro_destroy_stacks (pTHX) 817coro_destruct_stacks (pTHX)
612{ 818{
613 while (PL_curstackinfo->si_next) 819 while (PL_curstackinfo->si_next)
614 PL_curstackinfo = PL_curstackinfo->si_next; 820 PL_curstackinfo = PL_curstackinfo->si_next;
615 821
616 while (PL_curstackinfo) 822 while (PL_curstackinfo)
… …
627 833
628 Safefree (PL_tmps_stack); 834 Safefree (PL_tmps_stack);
629 Safefree (PL_markstack); 835 Safefree (PL_markstack);
630 Safefree (PL_scopestack); 836 Safefree (PL_scopestack);
631 Safefree (PL_savestack); 837 Safefree (PL_savestack);
632#if !PERL_VERSION_ATLEAST (5,9,0) 838#if !PERL_VERSION_ATLEAST (5,10,0)
633 Safefree (PL_retstack); 839 Safefree (PL_retstack);
634#endif 840#endif
635} 841}
842
843#define CORO_RSS \
844 rss += sizeof (SYM (curstackinfo)); \
845 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
846 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
847 rss += SYM (tmps_max) * sizeof (SV *); \
848 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
849 rss += SYM (scopestack_max) * sizeof (I32); \
850 rss += SYM (savestack_max) * sizeof (ANY);
636 851
637static size_t 852static size_t
638coro_rss (pTHX_ struct coro *coro) 853coro_rss (pTHX_ struct coro *coro)
639{ 854{
640 size_t rss = sizeof (*coro); 855 size_t rss = sizeof (*coro);
641 856
642 if (coro->mainstack) 857 if (coro->mainstack)
643 { 858 {
644 perl_slots tmp_slot;
645 perl_slots *slot;
646
647 if (coro->flags & CF_RUNNING) 859 if (coro->flags & CF_RUNNING)
648 { 860 {
649 slot = &tmp_slot; 861 #define SYM(sym) PL_ ## sym
650 862 CORO_RSS;
651 #define VAR(name,type) slot->name = PL_ ## name;
652 # include "state.h"
653 #undef VAR 863 #undef SYM
654 } 864 }
655 else 865 else
656 slot = coro->slot; 866 {
657 867 #define SYM(sym) coro->slot->sym
658 rss += sizeof (slot->curstackinfo); 868 CORO_RSS;
659 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 869 #undef SYM
660 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 870 }
661 rss += slot->tmps_max * sizeof (SV *);
662 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663 rss += slot->scopestack_max * sizeof (I32);
664 rss += slot->savestack_max * sizeof (ANY);
665
666#if !PERL_VERSION_ATLEAST (5,9,0)
667 rss += slot->retstack_max * sizeof (OP *);
668#endif
669 } 871 }
670 872
671 return rss; 873 return rss;
672} 874}
673 875
674/** coroutine stack handling ************************************************/ 876/** coroutine stack handling ************************************************/
675 877
878static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
879static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
880static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
881
882/* apparently < 5.8.8 */
883#ifndef MgPV_nolen_const
884#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
885 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
886 (const char*)(mg)->mg_ptr)
887#endif
888
889/*
890 * This overrides the default magic get method of %SIG elements.
891 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
892 * and instead of trying to save and restore the hash elements, we just provide
893 * readback here.
894 */
676static void 895static int
896coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
897{
898 const char *s = MgPV_nolen_const (mg);
899
900 if (*s == '_')
901 {
902 SV **svp = 0;
903
904 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
905 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
906
907 if (svp)
908 {
909 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
910 return 0;
911 }
912 }
913
914 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
915}
916
917static int
918coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
919{
920 const char *s = MgPV_nolen_const (mg);
921
922 if (*s == '_')
923 {
924 SV **svp = 0;
925
926 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
927 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
928
929 if (svp)
930 {
931 SV *old = *svp;
932 *svp = 0;
933 SvREFCNT_dec (old);
934 return 0;
935 }
936 }
937
938 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
939}
940
941static int
942coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
943{
944 const char *s = MgPV_nolen_const (mg);
945
946 if (*s == '_')
947 {
948 SV **svp = 0;
949
950 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
951 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
952
953 if (svp)
954 {
955 SV *old = *svp;
956 *svp = SvOK (sv) ? newSVsv (sv) : 0;
957 SvREFCNT_dec (old);
958 return 0;
959 }
960 }
961
962 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
963}
964
965static void
966prepare_nop (pTHX_ struct coro_transfer_args *ta)
967{
968 /* kind of mega-hacky, but works */
969 ta->next = ta->prev = (struct coro *)ta;
970}
971
972static int
973slf_check_nop (pTHX_ struct CoroSLF *frame)
974{
975 return 0;
976}
977
978static int
979slf_check_repeat (pTHX_ struct CoroSLF *frame)
980{
981 return 1;
982}
983
984static UNOP coro_setup_op;
985
986static void NOINLINE /* noinline to keep it out of the transfer fast path */
677coro_setup (pTHX_ struct coro *coro) 987coro_setup (pTHX_ struct coro *coro)
678{ 988{
679 /* 989 /*
680 * emulate part of the perl startup here. 990 * emulate part of the perl startup here.
681 */ 991 */
… …
683 993
684 PL_runops = RUNOPS_DEFAULT; 994 PL_runops = RUNOPS_DEFAULT;
685 PL_curcop = &PL_compiling; 995 PL_curcop = &PL_compiling;
686 PL_in_eval = EVAL_NULL; 996 PL_in_eval = EVAL_NULL;
687 PL_comppad = 0; 997 PL_comppad = 0;
998 PL_comppad_name = 0;
999 PL_comppad_name_fill = 0;
1000 PL_comppad_name_floor = 0;
688 PL_curpm = 0; 1001 PL_curpm = 0;
689 PL_curpad = 0; 1002 PL_curpad = 0;
690 PL_localizing = 0; 1003 PL_localizing = 0;
691 PL_dirty = 0; 1004 PL_dirty = 0;
692 PL_restartop = 0; 1005 PL_restartop = 0;
693 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 1006#if PERL_VERSION_ATLEAST (5,10,0)
694 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 1007 PL_parser = 0;
1008#endif
1009 PL_hints = 0;
1010
1011 /* recreate the die/warn hooks */
1012 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
1013 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
695 1014
696 GvSV (PL_defgv) = newSV (0); 1015 GvSV (PL_defgv) = newSV (0);
697 GvAV (PL_defgv) = coro->args; coro->args = 0; 1016 GvAV (PL_defgv) = coro->args; coro->args = 0;
698 GvSV (PL_errgv) = newSV (0); 1017 GvSV (PL_errgv) = newSV (0);
699 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1018 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1019 GvHV (PL_hintgv) = 0;
700 PL_rs = newSVsv (GvSV (irsgv)); 1020 PL_rs = newSVsv (GvSV (irsgv));
701 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 1021 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
702 1022
703 { 1023 {
704 dSP; 1024 dSP;
705 LOGOP myop; 1025 UNOP myop;
706 1026
707 Zero (&myop, 1, LOGOP); 1027 Zero (&myop, 1, UNOP);
708 myop.op_next = Nullop; 1028 myop.op_next = Nullop;
1029 myop.op_type = OP_ENTERSUB;
709 myop.op_flags = OPf_WANT_VOID; 1030 myop.op_flags = OPf_WANT_VOID;
710 1031
711 PUSHMARK (SP); 1032 PUSHMARK (SP);
712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1033 PUSHs ((SV *)coro->startcv);
713 PUTBACK; 1034 PUTBACK;
714 PL_op = (OP *)&myop; 1035 PL_op = (OP *)&myop;
715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
716 SPAGAIN;
717
718 /*
719 * now its very tricky. the "tail" of the next transfer might end up
720 * either in a new cctx, or an existing one.
721 * in case of an existing one we have to take care of whatever
722 * entersub and transfer do to the perl stack.
723 */
724 ENTER;
725 EXTEND (SP, 4);
726 PUSHs ((SV *)0); /* items */
727 PUSHs ((SV *)0); /* ix, set_stacklevel */
728 PUSHs ((SV *)(sp - PL_stack_base + 1)); /* ax */
729 PUSHs ((SV *)0); /* again */
730 PUTBACK;
731 } 1037 }
732}
733 1038
1039 /* this newly created coroutine might be run on an existing cctx which most
1040 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
1041 */
1042 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
1043 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1044
1045 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1046 coro_setup_op.op_next = PL_op;
1047 coro_setup_op.op_type = OP_ENTERSUB;
1048 coro_setup_op.op_ppaddr = pp_slf;
1049 /* no flags etc. required, as an init function won't be called */
1050
1051 PL_op = (OP *)&coro_setup_op;
1052
1053 /* copy throw, in case it was set before coro_setup */
1054 CORO_THROW = coro->except;
1055
1056 if (expect_false (enable_times))
1057 {
1058 coro_times_update ();
1059 coro_times_sub (coro);
1060 }
1061}
1062
734static void 1063static void
735coro_destroy (pTHX_ struct coro *coro) 1064coro_unwind_stacks (pTHX)
736{ 1065{
737 if (!IN_DESTRUCT) 1066 if (!IN_DESTRUCT)
738 { 1067 {
739 /* restore all saved variables and stuff */ 1068 /* restore all saved variables and stuff */
740 LEAVE_SCOPE (0); 1069 LEAVE_SCOPE (0);
… …
748 POPSTACK_TO (PL_mainstack); 1077 POPSTACK_TO (PL_mainstack);
749 1078
750 /* unwind main stack */ 1079 /* unwind main stack */
751 dounwind (-1); 1080 dounwind (-1);
752 } 1081 }
1082}
753 1083
754 SvREFCNT_dec (GvSV (PL_defgv)); 1084static void
755 SvREFCNT_dec (GvAV (PL_defgv)); 1085coro_destruct_perl (pTHX_ struct coro *coro)
756 SvREFCNT_dec (GvSV (PL_errgv)); 1086{
757 SvREFCNT_dec (PL_defoutgv); 1087 SV *svf [9];
758 SvREFCNT_dec (PL_rs);
759 SvREFCNT_dec (GvSV (irsgv));
760 1088
761 SvREFCNT_dec (PL_diehook);
762 SvREFCNT_dec (PL_warnhook);
763 1089 {
1090 struct coro *current = SvSTATE_current;
1091
1092 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1093
1094 save_perl (aTHX_ current);
1095 load_perl (aTHX_ coro);
1096
1097 coro_unwind_stacks (aTHX);
1098 coro_destruct_stacks (aTHX);
1099
1100 // now save some sv's to be free'd later
1101 svf [0] = GvSV (PL_defgv);
1102 svf [1] = (SV *)GvAV (PL_defgv);
1103 svf [2] = GvSV (PL_errgv);
1104 svf [3] = (SV *)PL_defoutgv;
1105 svf [4] = PL_rs;
1106 svf [5] = GvSV (irsgv);
1107 svf [6] = (SV *)GvHV (PL_hintgv);
1108 svf [7] = PL_diehook;
1109 svf [8] = PL_warnhook;
1110 assert (9 == sizeof (svf) / sizeof (*svf));
1111
1112 load_perl (aTHX_ current);
1113 }
1114
1115 {
1116 int i;
1117
1118 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1119 SvREFCNT_dec (svf [i]);
1120
764 SvREFCNT_dec (coro->saved_deffh); 1121 SvREFCNT_dec (coro->saved_deffh);
765 SvREFCNT_dec (coro->throw); 1122 SvREFCNT_dec (coro->rouse_cb);
766 1123 SvREFCNT_dec (coro->invoke_cb);
767 coro_destroy_stacks (aTHX); 1124 SvREFCNT_dec (coro->invoke_av);
1125 }
768} 1126}
769 1127
770static void 1128INLINE void
771free_coro_mortal (pTHX) 1129free_coro_mortal (pTHX)
772{ 1130{
773 if (expect_true (coro_mortal)) 1131 if (expect_true (coro_mortal))
774 { 1132 {
775 SvREFCNT_dec (coro_mortal); 1133 SvREFCNT_dec (coro_mortal);
… …
780static int 1138static int
781runops_trace (pTHX) 1139runops_trace (pTHX)
782{ 1140{
783 COP *oldcop = 0; 1141 COP *oldcop = 0;
784 int oldcxix = -2; 1142 int oldcxix = -2;
785 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
786 coro_cctx *cctx = coro->cctx;
787 1143
788 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1144 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
789 { 1145 {
790 PERL_ASYNC_CHECK (); 1146 PERL_ASYNC_CHECK ();
791 1147
792 if (cctx->flags & CC_TRACE_ALL) 1148 if (cctx_current->flags & CC_TRACE_ALL)
793 { 1149 {
794 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1150 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
795 { 1151 {
796 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1152 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
797 SV **bot, **top; 1153 SV **bot, **top;
798 AV *av = newAV (); /* return values */ 1154 AV *av = newAV (); /* return values */
799 SV **cb; 1155 SV **cb;
… …
809 : cx->blk_gimme == G_SCALAR ? bot + 1 1165 : cx->blk_gimme == G_SCALAR ? bot + 1
810 : bot; 1166 : bot;
811 1167
812 av_extend (av, top - bot); 1168 av_extend (av, top - bot);
813 while (bot < top) 1169 while (bot < top)
814 av_push (av, SvREFCNT_inc (*bot++)); 1170 av_push (av, SvREFCNT_inc_NN (*bot++));
815 1171
816 PL_runops = RUNOPS_DEFAULT; 1172 PL_runops = RUNOPS_DEFAULT;
817 ENTER; 1173 ENTER;
818 SAVETMPS; 1174 SAVETMPS;
819 EXTEND (SP, 3); 1175 EXTEND (SP, 3);
820 PUSHMARK (SP); 1176 PUSHMARK (SP);
821 PUSHs (&PL_sv_no); 1177 PUSHs (&PL_sv_no);
822 PUSHs (fullname); 1178 PUSHs (fullname);
823 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1179 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
824 PUTBACK; 1180 PUTBACK;
825 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1181 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
826 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1182 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
827 SPAGAIN; 1183 SPAGAIN;
828 FREETMPS; 1184 FREETMPS;
829 LEAVE; 1185 LEAVE;
830 PL_runops = runops_trace; 1186 PL_runops = runops_trace;
… …
836 1192
837 if (PL_curcop != &PL_compiling) 1193 if (PL_curcop != &PL_compiling)
838 { 1194 {
839 SV **cb; 1195 SV **cb;
840 1196
841 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1197 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
842 { 1198 {
843 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1199 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
844 1200
845 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1201 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
846 { 1202 {
847 runops_proc_t old_runops = PL_runops;
848 dSP; 1203 dSP;
849 GV *gv = CvGV (cx->blk_sub.cv); 1204 GV *gv = CvGV (cx->blk_sub.cv);
850 SV *fullname = sv_2mortal (newSV (0)); 1205 SV *fullname = sv_2mortal (newSV (0));
851 1206
852 if (isGV (gv)) 1207 if (isGV (gv))
… …
857 SAVETMPS; 1212 SAVETMPS;
858 EXTEND (SP, 3); 1213 EXTEND (SP, 3);
859 PUSHMARK (SP); 1214 PUSHMARK (SP);
860 PUSHs (&PL_sv_yes); 1215 PUSHs (&PL_sv_yes);
861 PUSHs (fullname); 1216 PUSHs (fullname);
862 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1217 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
863 PUTBACK; 1218 PUTBACK;
864 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1219 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
865 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1220 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
866 SPAGAIN; 1221 SPAGAIN;
867 FREETMPS; 1222 FREETMPS;
868 LEAVE; 1223 LEAVE;
869 PL_runops = runops_trace; 1224 PL_runops = runops_trace;
870 } 1225 }
871 1226
872 oldcxix = cxstack_ix; 1227 oldcxix = cxstack_ix;
873 } 1228 }
874 1229
875 if (cctx->flags & CC_TRACE_LINE) 1230 if (cctx_current->flags & CC_TRACE_LINE)
876 { 1231 {
877 dSP; 1232 dSP;
878 1233
879 PL_runops = RUNOPS_DEFAULT; 1234 PL_runops = RUNOPS_DEFAULT;
880 ENTER; 1235 ENTER;
… …
883 PL_runops = RUNOPS_DEFAULT; 1238 PL_runops = RUNOPS_DEFAULT;
884 PUSHMARK (SP); 1239 PUSHMARK (SP);
885 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1240 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
886 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1241 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
887 PUTBACK; 1242 PUTBACK;
888 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1243 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
889 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1244 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
890 SPAGAIN; 1245 SPAGAIN;
891 FREETMPS; 1246 FREETMPS;
892 LEAVE; 1247 LEAVE;
893 PL_runops = runops_trace; 1248 PL_runops = runops_trace;
… …
899 1254
900 TAINT_NOT; 1255 TAINT_NOT;
901 return 0; 1256 return 0;
902} 1257}
903 1258
904/* inject a fake call to Coro::State::_cctx_init into the execution */ 1259static struct CoroSLF cctx_ssl_frame;
905/* _cctx_init should be careful, as it could be called at almost any time */ 1260
906/* during execution of a perl program */ 1261static void
1262slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1263{
1264 ta->prev = 0;
1265}
1266
1267static int
1268slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1269{
1270 *frame = cctx_ssl_frame;
1271
1272 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1273}
1274
1275/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
907static void NOINLINE 1276static void NOINLINE
908cctx_prepare (pTHX_ coro_cctx *cctx) 1277cctx_prepare (pTHX)
909{ 1278{
910 dSP;
911 LOGOP myop;
912
913 PL_top_env = &PL_start_env; 1279 PL_top_env = &PL_start_env;
914 1280
915 if (cctx->flags & CC_TRACE) 1281 if (cctx_current->flags & CC_TRACE)
916 PL_runops = runops_trace; 1282 PL_runops = runops_trace;
917 1283
918 Zero (&myop, 1, LOGOP); 1284 /* we already must be executing an SLF op, there is no other valid way
919 myop.op_next = PL_op; 1285 * that can lead to creation of a new cctx */
920 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1286 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1287 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
921 1288
922 PUSHMARK (SP); 1289 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
923 EXTEND (SP, 2); 1290 cctx_ssl_frame = slf_frame;
924 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1291
925 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1292 slf_frame.prepare = slf_prepare_set_stacklevel;
926 PUTBACK; 1293 slf_frame.check = slf_check_set_stacklevel;
927 PL_op = (OP *)&myop; 1294}
928 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1295
929 SPAGAIN; 1296/* the tail of transfer: execute stuff we can only do after a transfer */
1297INLINE void
1298transfer_tail (pTHX)
1299{
1300 free_coro_mortal (aTHX);
930} 1301}
931 1302
932/* 1303/*
933 * this is a _very_ stripped down perl interpreter ;) 1304 * this is a _very_ stripped down perl interpreter ;)
934 */ 1305 */
935static void 1306static void
936cctx_run (void *arg) 1307cctx_run (void *arg)
937{ 1308{
1309#ifdef USE_ITHREADS
1310# if CORO_PTHREAD
1311 PERL_SET_CONTEXT (coro_thx);
1312# endif
1313#endif
1314 {
938 dTHX; 1315 dTHX;
939 1316
940 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1317 /* normally we would need to skip the entersub here */
941 UNLOCK; 1318 /* not doing so will re-execute it, which is exactly what we want */
942
943 /* we now skip the entersub that lead to transfer() */
944 PL_op = PL_op->op_next; 1319 /* PL_nop = PL_nop->op_next */
945 1320
946 /* inject a fake subroutine call to cctx_init */ 1321 /* inject a fake subroutine call to cctx_init */
947 cctx_prepare (aTHX_ (coro_cctx *)arg); 1322 cctx_prepare (aTHX);
948 1323
1324 /* cctx_run is the alternative tail of transfer() */
1325 transfer_tail (aTHX);
1326
949 /* somebody or something will hit me for both perl_run and PL_restartop */ 1327 /* somebody or something will hit me for both perl_run and PL_restartop */
950 PL_restartop = PL_op; 1328 PL_restartop = PL_op;
951 perl_run (PL_curinterp); 1329 perl_run (PL_curinterp);
952
953 /* 1330 /*
1331 * Unfortunately, there is no way to get at the return values of the
1332 * coro body here, as perl_run destroys these
1333 */
1334
1335 /*
954 * If perl-run returns we assume exit() was being called or the coro 1336 * If perl-run returns we assume exit() was being called or the coro
955 * fell off the end, which seems to be the only valid (non-bug) 1337 * fell off the end, which seems to be the only valid (non-bug)
956 * reason for perl_run to return. We try to exit by jumping to the 1338 * reason for perl_run to return. We try to exit by jumping to the
957 * bootstrap-time "top" top_env, as we cannot restore the "main" 1339 * bootstrap-time "top" top_env, as we cannot restore the "main"
958 * coroutine as Coro has no such concept 1340 * coroutine as Coro has no such concept.
1341 * This actually isn't valid with the pthread backend, but OSes requiring
1342 * that backend are too broken to do it in a standards-compliant way.
959 */ 1343 */
960 PL_top_env = main_top_env; 1344 PL_top_env = main_top_env;
961 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1345 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1346 }
962} 1347}
963 1348
964static coro_cctx * 1349static coro_cctx *
965cctx_new () 1350cctx_new ()
966{ 1351{
967 coro_cctx *cctx; 1352 coro_cctx *cctx;
1353
1354 ++cctx_count;
1355 New (0, cctx, 1, coro_cctx);
1356
1357 cctx->gen = cctx_gen;
1358 cctx->flags = 0;
1359 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1360
1361 return cctx;
1362}
1363
1364/* create a new cctx only suitable as source */
1365static coro_cctx *
1366cctx_new_empty ()
1367{
1368 coro_cctx *cctx = cctx_new ();
1369
1370 cctx->sptr = 0;
1371 coro_create (&cctx->cctx, 0, 0, 0, 0);
1372
1373 return cctx;
1374}
1375
1376/* create a new cctx suitable as destination/running a perl interpreter */
1377static coro_cctx *
1378cctx_new_run ()
1379{
1380 coro_cctx *cctx = cctx_new ();
968 void *stack_start; 1381 void *stack_start;
969 size_t stack_size; 1382 size_t stack_size;
970 1383
971 ++cctx_count;
972
973 Newz (0, cctx, 1, coro_cctx);
974
975#if HAVE_MMAP 1384#if HAVE_MMAP
976 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1385 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
977 /* mmap supposedly does allocate-on-write for us */ 1386 /* mmap supposedly does allocate-on-write for us */
978 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1387 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
979 1388
980 if (cctx->sptr != (void *)-1) 1389 if (cctx->sptr != (void *)-1)
981 { 1390 {
982# if CORO_STACKGUARD 1391 #if CORO_STACKGUARD
983 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1392 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
984# endif 1393 #endif
985 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1394 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
986 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1395 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
987 cctx->flags |= CC_MAPPED; 1396 cctx->flags |= CC_MAPPED;
988 } 1397 }
989 else 1398 else
990#endif 1399#endif
991 { 1400 {
992 cctx->ssize = coro_stacksize * (long)sizeof (long); 1401 cctx->ssize = cctx_stacksize * (long)sizeof (long);
993 New (0, cctx->sptr, coro_stacksize, long); 1402 New (0, cctx->sptr, cctx_stacksize, long);
994 1403
995 if (!cctx->sptr) 1404 if (!cctx->sptr)
996 { 1405 {
997 perror ("FATAL: unable to allocate stack for coroutine"); 1406 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
998 _exit (EXIT_FAILURE); 1407 _exit (EXIT_FAILURE);
999 } 1408 }
1000 1409
1001 stack_start = cctx->sptr; 1410 stack_start = cctx->sptr;
1002 stack_size = cctx->ssize; 1411 stack_size = cctx->ssize;
1003 } 1412 }
1004 1413
1005 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1414 #if CORO_USE_VALGRIND
1415 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1416 #endif
1417
1006 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1418 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1007 1419
1008 return cctx; 1420 return cctx;
1009} 1421}
1010 1422
… …
1012cctx_destroy (coro_cctx *cctx) 1424cctx_destroy (coro_cctx *cctx)
1013{ 1425{
1014 if (!cctx) 1426 if (!cctx)
1015 return; 1427 return;
1016 1428
1429 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1430
1017 --cctx_count; 1431 --cctx_count;
1432 coro_destroy (&cctx->cctx);
1018 1433
1434 /* coro_transfer creates new, empty cctx's */
1435 if (cctx->sptr)
1436 {
1019#if CORO_USE_VALGRIND 1437 #if CORO_USE_VALGRIND
1020 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1438 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1021#endif 1439 #endif
1022 1440
1023#if HAVE_MMAP 1441#if HAVE_MMAP
1024 if (cctx->flags & CC_MAPPED) 1442 if (cctx->flags & CC_MAPPED)
1025 munmap (cctx->sptr, cctx->ssize); 1443 munmap (cctx->sptr, cctx->ssize);
1026 else 1444 else
1027#endif 1445#endif
1028 Safefree (cctx->sptr); 1446 Safefree (cctx->sptr);
1447 }
1029 1448
1030 Safefree (cctx); 1449 Safefree (cctx);
1031} 1450}
1032 1451
1033/* wether this cctx should be destructed */ 1452/* wether this cctx should be destructed */
1034#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1453#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1035 1454
1036static coro_cctx * 1455static coro_cctx *
1037cctx_get (pTHX_ int gimme) 1456cctx_get (pTHX)
1038{ 1457{
1039 while (expect_true (cctx_first[gimme])) 1458 while (expect_true (cctx_first))
1040 { 1459 {
1041 coro_cctx *cctx = cctx_first[gimme]; 1460 coro_cctx *cctx = cctx_first;
1042 cctx_first[gimme] = cctx->next; 1461 cctx_first = cctx->next;
1043 --cctx_idle[gimme]; 1462 --cctx_idle;
1044 1463
1045 if (expect_true (!CCTX_EXPIRED (cctx))) 1464 if (expect_true (!CCTX_EXPIRED (cctx)))
1046 return cctx; 1465 return cctx;
1047 1466
1048 cctx_destroy (cctx); 1467 cctx_destroy (cctx);
1049 } 1468 }
1050 1469
1051 assert (!gimme);
1052 return cctx_new (); 1470 return cctx_new_run ();
1053} 1471}
1054 1472
1055static void 1473static void
1056cctx_put (coro_cctx *cctx, int gimme) 1474cctx_put (coro_cctx *cctx)
1057{ 1475{
1476 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1477
1058 /* free another cctx if overlimit */ 1478 /* free another cctx if overlimit */
1059 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX)) 1479 if (expect_false (cctx_idle >= cctx_max_idle))
1060 { 1480 {
1061 coro_cctx *first = cctx_first[gimme]; 1481 coro_cctx *first = cctx_first;
1062 cctx_first[gimme] = first->next; 1482 cctx_first = first->next;
1063 --cctx_idle[gimme]; 1483 --cctx_idle;
1064 1484
1065 cctx_destroy (first); 1485 cctx_destroy (first);
1066 } 1486 }
1067 1487
1068 ++cctx_idle[gimme]; 1488 ++cctx_idle;
1069 cctx->next = cctx_first[gimme]; 1489 cctx->next = cctx_first;
1070 cctx_first[gimme] = cctx; 1490 cctx_first = cctx;
1071} 1491}
1072 1492
1073/** coroutine switching *****************************************************/ 1493/** coroutine switching *****************************************************/
1074 1494
1075static void 1495static void
1076transfer_check (pTHX_ struct coro *prev, struct coro *next) 1496transfer_check (pTHX_ struct coro *prev, struct coro *next)
1077{ 1497{
1498 /* TODO: throwing up here is considered harmful */
1499
1078 if (expect_true (prev != next)) 1500 if (expect_true (prev != next))
1079 { 1501 {
1080 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1502 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1081 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1503 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1082 1504
1083 if (expect_false (next->flags & CF_RUNNING))
1084 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1085
1086 if (expect_false (next->flags & CF_DESTROYED)) 1505 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1087 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1506 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1088 1507
1089 if (
1090#if PERL_VERSION_ATLEAST (5,9,0) 1508#if !PERL_VERSION_ATLEAST (5,10,0)
1091 expect_false (PL_parser)
1092#else
1093 expect_false (PL_lex_state != LEX_NOTPARSING) 1509 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1094#endif
1095 )
1096 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1510 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1511#endif
1097 } 1512 }
1098} 1513}
1099 1514
1100/* always use the TRANSFER macro */ 1515/* always use the TRANSFER macro */
1101static void NOINLINE 1516static void NOINLINE /* noinline so we have a fixed stackframe */
1102transfer (pTHX_ struct coro *prev, struct coro *next) 1517transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1103{ 1518{
1104 dSTACKLEVEL; 1519 dSTACKLEVEL;
1105 1520
1106 /* sometimes transfer is only called to set idle_sp */ 1521 /* sometimes transfer is only called to set idle_sp */
1107 if (expect_false (!next)) 1522 if (expect_false (!prev))
1108 { 1523 {
1109 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1524 cctx_current->idle_sp = STACKLEVEL;
1110 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1525 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1111 } 1526 }
1112 else if (expect_true (prev != next)) 1527 else if (expect_true (prev != next))
1113 { 1528 {
1114 coro_cctx *prev__cctx; 1529 coro_cctx *cctx_prev;
1115 1530
1116 if (expect_false (prev->flags & CF_NEW)) 1531 if (expect_false (prev->flags & CF_NEW))
1117 { 1532 {
1118 /* create a new empty context */ 1533 /* create a new empty/source context */
1119 Newz (0, prev->cctx, 1, coro_cctx);
1120 prev->flags &= ~CF_NEW; 1534 prev->flags &= ~CF_NEW;
1121 prev->flags |= CF_RUNNING; 1535 prev->flags |= CF_RUNNING;
1122 } 1536 }
1123 1537
1124 prev->flags &= ~CF_RUNNING; 1538 prev->flags &= ~CF_RUNNING;
1125 next->flags |= CF_RUNNING; 1539 next->flags |= CF_RUNNING;
1126 1540
1127 LOCK; 1541 /* first get rid of the old state */
1542 save_perl (aTHX_ prev);
1128 1543
1129 if (expect_false (next->flags & CF_NEW)) 1544 if (expect_false (next->flags & CF_NEW))
1130 { 1545 {
1131 /* need to start coroutine */ 1546 /* need to start coroutine */
1132 next->flags &= ~CF_NEW; 1547 next->flags &= ~CF_NEW;
1133 /* first get rid of the old state */
1134 save_perl (aTHX_ prev);
1135 /* setup coroutine call */ 1548 /* setup coroutine call */
1136 coro_setup (aTHX_ next); 1549 coro_setup (aTHX_ next);
1137 } 1550 }
1138 else 1551 else
1552 load_perl (aTHX_ next);
1553
1554 /* possibly untie and reuse the cctx */
1555 if (expect_true (
1556 cctx_current->idle_sp == STACKLEVEL
1557 && !(cctx_current->flags & CC_TRACE)
1558 && !force_cctx
1559 ))
1139 { 1560 {
1140 /* coroutine already started */ 1561 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1141 save_perl (aTHX_ prev); 1562 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1142 load_perl (aTHX_ next); 1563
1564 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1565 /* without this the next cctx_get might destroy the running cctx while still in use */
1566 if (expect_false (CCTX_EXPIRED (cctx_current)))
1567 if (expect_true (!next->cctx))
1568 next->cctx = cctx_get (aTHX);
1569
1570 cctx_put (cctx_current);
1143 } 1571 }
1572 else
1573 prev->cctx = cctx_current;
1144 1574
1145 prev__cctx = prev->cctx; 1575 ++next->usecount;
1146 1576
1147 /* possibly "free" the cctx */ 1577 cctx_prev = cctx_current;
1148 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1578 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1579
1580 next->cctx = 0;
1581
1582 if (expect_false (cctx_prev != cctx_current))
1149 { 1583 {
1150 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1584 cctx_prev->top_env = PL_top_env;
1151 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1585 PL_top_env = cctx_current->top_env;
1152 1586 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1153 prev->cctx = 0;
1154
1155 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1156 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1157 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1158 if (!next->cctx)
1159 next->cctx = cctx_get (aTHX_ next->gimme);
1160
1161 cctx_put (prev__cctx, prev->gimme);
1162 } 1587 }
1163 1588
1164 ++next->usecount; 1589 transfer_tail (aTHX);
1165
1166 if (expect_true (!next->cctx))
1167 next->cctx = cctx_get (aTHX_ next->gimme);
1168
1169 if (expect_false (prev__cctx != next->cctx))
1170 {
1171 prev__cctx->top_env = PL_top_env;
1172 PL_top_env = next->cctx->top_env;
1173 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1174 }
1175
1176 free_coro_mortal (aTHX);
1177 UNLOCK;
1178
1179 if (expect_false (prev->throw || next->throw))
1180 {
1181 struct coro *coro = SvSTATE (coro_current);
1182
1183 if (coro->throw)
1184 {
1185 SV *exception = coro->throw;
1186 coro->throw = 0;
1187 sv_setsv (ERRSV, exception);
1188 croak (0);
1189 }
1190 }
1191 } 1590 }
1192} 1591}
1193 1592
1194struct transfer_args
1195{
1196 struct coro *prev, *next;
1197};
1198
1199#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1593#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1200#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1594#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1201 1595
1202/** high level stuff ********************************************************/ 1596/** high level stuff ********************************************************/
1203 1597
1204static int 1598static int
1205coro_state_destroy (pTHX_ struct coro *coro) 1599coro_state_destroy (pTHX_ struct coro *coro)
1206{ 1600{
1207 if (coro->flags & CF_DESTROYED) 1601 if (coro->flags & CF_DESTROYED)
1208 return 0; 1602 return 0;
1603
1604 if (coro->on_destroy && !PL_dirty)
1605 coro->on_destroy (aTHX_ coro);
1209 1606
1210 coro->flags |= CF_DESTROYED; 1607 coro->flags |= CF_DESTROYED;
1211 1608
1212 if (coro->flags & CF_READY) 1609 if (coro->flags & CF_READY)
1213 { 1610 {
1214 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1611 /* reduce nready, as destroying a ready coro effectively unreadies it */
1215 /* alternative: look through all ready queues and remove the coro */ 1612 /* alternative: look through all ready queues and remove the coro */
1216 LOCK;
1217 --coro_nready; 1613 --coro_nready;
1218 UNLOCK;
1219 } 1614 }
1220 else 1615 else
1221 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1616 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1222 1617
1223 if (coro->mainstack && coro->mainstack != main_mainstack) 1618 if (coro->mainstack
1224 { 1619 && coro->mainstack != main_mainstack
1225 struct coro temp; 1620 && coro->slot
1226 1621 && !PL_dirty)
1227 if (coro->flags & CF_RUNNING)
1228 croak ("FATAL: tried to destroy currently running coroutine");
1229
1230 save_perl (aTHX_ &temp);
1231 load_perl (aTHX_ coro);
1232
1233 coro_destroy (aTHX_ coro); 1622 coro_destruct_perl (aTHX_ coro);
1234
1235 load_perl (aTHX_ &temp);
1236
1237 coro->slot = 0;
1238 }
1239 1623
1240 cctx_destroy (coro->cctx); 1624 cctx_destroy (coro->cctx);
1625 SvREFCNT_dec (coro->startcv);
1241 SvREFCNT_dec (coro->args); 1626 SvREFCNT_dec (coro->args);
1627 SvREFCNT_dec (CORO_THROW);
1242 1628
1243 if (coro->next) coro->next->prev = coro->prev; 1629 if (coro->next) coro->next->prev = coro->prev;
1244 if (coro->prev) coro->prev->next = coro->next; 1630 if (coro->prev) coro->prev->next = coro->next;
1245 if (coro == coro_first) coro_first = coro->next; 1631 if (coro == coro_first) coro_first = coro->next;
1246 1632
… …
1284# define MGf_DUP 0 1670# define MGf_DUP 0
1285#endif 1671#endif
1286}; 1672};
1287 1673
1288static void 1674static void
1289prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1675prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1290{ 1676{
1291 ta->prev = SvSTATE (prev_sv); 1677 ta->prev = SvSTATE (prev_sv);
1292 ta->next = SvSTATE (next_sv); 1678 ta->next = SvSTATE (next_sv);
1293 TRANSFER_CHECK (*ta); 1679 TRANSFER_CHECK (*ta);
1294} 1680}
1295 1681
1296static void 1682static void
1297api_transfer (SV *prev_sv, SV *next_sv) 1683api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1298{ 1684{
1299 dTHX;
1300 struct transfer_args ta; 1685 struct coro_transfer_args ta;
1301 1686
1302 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1687 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1303 TRANSFER (ta); 1688 TRANSFER (ta, 1);
1689}
1690
1691/*****************************************************************************/
1692/* gensub: simple closure generation utility */
1693
1694#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1695
1696/* create a closure from XS, returns a code reference */
1697/* the arg can be accessed via GENSUB_ARG from the callback */
1698/* the callback must use dXSARGS/XSRETURN */
1699static SV *
1700gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1701{
1702 CV *cv = (CV *)newSV (0);
1703
1704 sv_upgrade ((SV *)cv, SVt_PVCV);
1705
1706 CvANON_on (cv);
1707 CvISXSUB_on (cv);
1708 CvXSUB (cv) = xsub;
1709 GENSUB_ARG = arg;
1710
1711 return newRV_noinc ((SV *)cv);
1304} 1712}
1305 1713
1306/** Coro ********************************************************************/ 1714/** Coro ********************************************************************/
1307 1715
1308static void 1716INLINE void
1309coro_enq (pTHX_ SV *coro_sv) 1717coro_enq (pTHX_ struct coro *coro)
1310{ 1718{
1311 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1719 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1312}
1313 1720
1314static SV * 1721 SvREFCNT_inc_NN (coro->hv);
1315coro_deq (pTHX_ int min_prio)
1316{
1317 int prio = PRIO_MAX - PRIO_MIN;
1318 1722
1319 min_prio -= PRIO_MIN; 1723 coro->next_ready = 0;
1320 if (min_prio < 0) 1724 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1321 min_prio = 0; 1725 ready [1] = coro;
1726}
1322 1727
1728INLINE struct coro *
1729coro_deq (pTHX)
1730{
1731 int prio;
1732
1323 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1733 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1324 if (AvFILLp (coro_ready [prio]) >= 0) 1734 {
1325 return av_shift (coro_ready [prio]); 1735 struct coro **ready = coro_ready [prio];
1736
1737 if (ready [0])
1738 {
1739 struct coro *coro = ready [0];
1740 ready [0] = coro->next_ready;
1741 return coro;
1742 }
1743 }
1326 1744
1327 return 0; 1745 return 0;
1328} 1746}
1329 1747
1330static int 1748static int
1331api_ready (SV *coro_sv) 1749api_ready (pTHX_ SV *coro_sv)
1332{ 1750{
1333 dTHX;
1334 struct coro *coro; 1751 struct coro *coro;
1335 1752 SV *sv_hook;
1336 if (SvROK (coro_sv)) 1753 void (*xs_hook)(void);
1337 coro_sv = SvRV (coro_sv);
1338 1754
1339 coro = SvSTATE (coro_sv); 1755 coro = SvSTATE (coro_sv);
1340 1756
1341 if (coro->flags & CF_READY) 1757 if (coro->flags & CF_READY)
1342 return 0; 1758 return 0;
1343 1759
1344 coro->flags |= CF_READY; 1760 coro->flags |= CF_READY;
1345 1761
1346 LOCK; 1762 sv_hook = coro_nready ? 0 : coro_readyhook;
1347 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1763 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1764
1765 coro_enq (aTHX_ coro);
1348 ++coro_nready; 1766 ++coro_nready;
1349 UNLOCK; 1767
1768 if (sv_hook)
1769 {
1770 dSP;
1771
1772 ENTER;
1773 SAVETMPS;
1774
1775 PUSHMARK (SP);
1776 PUTBACK;
1777 call_sv (sv_hook, G_VOID | G_DISCARD);
1778
1779 FREETMPS;
1780 LEAVE;
1781 }
1782
1783 if (xs_hook)
1784 xs_hook ();
1350 1785
1351 return 1; 1786 return 1;
1352} 1787}
1353 1788
1354static int 1789static int
1355api_is_ready (SV *coro_sv) 1790api_is_ready (pTHX_ SV *coro_sv)
1356{ 1791{
1357 dTHX;
1358 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1792 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1359} 1793}
1360 1794
1361static void 1795/* expects to own a reference to next->hv */
1796INLINE void
1362prepare_schedule (pTHX_ struct transfer_args *ta) 1797prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1363{ 1798{
1364 SV *prev_sv, *next_sv;
1365
1366 for (;;)
1367 {
1368 LOCK;
1369 next_sv = coro_deq (aTHX_ PRIO_MIN);
1370
1371 /* nothing to schedule: call the idle handler */
1372 if (expect_false (!next_sv))
1373 {
1374 dSP;
1375 UNLOCK;
1376
1377 ENTER;
1378 SAVETMPS;
1379
1380 PUSHMARK (SP);
1381 PUTBACK;
1382 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1383
1384 FREETMPS;
1385 LEAVE;
1386 continue;
1387 }
1388
1389 ta->next = SvSTATE (next_sv);
1390
1391 /* cannot transfer to destroyed coros, skip and look for next */
1392 if (expect_false (ta->next->flags & CF_DESTROYED))
1393 {
1394 UNLOCK;
1395 SvREFCNT_dec (next_sv);
1396 /* coro_nready is already taken care of by destroy */
1397 continue;
1398 }
1399
1400 --coro_nready;
1401 UNLOCK;
1402 break;
1403 }
1404
1405 /* free this only after the transfer */
1406 prev_sv = SvRV (coro_current); 1799 SV *prev_sv = SvRV (coro_current);
1800
1407 ta->prev = SvSTATE (prev_sv); 1801 ta->prev = SvSTATE_hv (prev_sv);
1802 ta->next = next;
1803
1408 TRANSFER_CHECK (*ta); 1804 TRANSFER_CHECK (*ta);
1409 assert (ta->next->flags & CF_READY); 1805
1410 ta->next->flags &= ~CF_READY;
1411 SvRV_set (coro_current, next_sv); 1806 SvRV_set (coro_current, (SV *)next->hv);
1412 1807
1413 LOCK;
1414 free_coro_mortal (aTHX); 1808 free_coro_mortal (aTHX);
1415 coro_mortal = prev_sv; 1809 coro_mortal = prev_sv;
1416 UNLOCK;
1417} 1810}
1418 1811
1419static void 1812static void
1813prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1814{
1815 for (;;)
1816 {
1817 struct coro *next = coro_deq (aTHX);
1818
1819 if (expect_true (next))
1820 {
1821 /* cannot transfer to destroyed coros, skip and look for next */
1822 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1823 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1824 else
1825 {
1826 next->flags &= ~CF_READY;
1827 --coro_nready;
1828
1829 prepare_schedule_to (aTHX_ ta, next);
1830 break;
1831 }
1832 }
1833 else
1834 {
1835 /* nothing to schedule: call the idle handler */
1836 if (SvROK (sv_idle)
1837 && SvOBJECT (SvRV (sv_idle)))
1838 {
1839 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1840 api_ready (aTHX_ SvRV (sv_idle));
1841 --coro_nready;
1842 }
1843 else
1844 {
1845 dSP;
1846
1847 ENTER;
1848 SAVETMPS;
1849
1850 PUSHMARK (SP);
1851 PUTBACK;
1852 call_sv (sv_idle, G_VOID | G_DISCARD);
1853
1854 FREETMPS;
1855 LEAVE;
1856 }
1857 }
1858 }
1859}
1860
1861INLINE void
1420prepare_cede (pTHX_ struct transfer_args *ta) 1862prepare_cede (pTHX_ struct coro_transfer_args *ta)
1421{ 1863{
1422 api_ready (coro_current); 1864 api_ready (aTHX_ coro_current);
1423 prepare_schedule (aTHX_ ta); 1865 prepare_schedule (aTHX_ ta);
1424} 1866}
1425 1867
1868INLINE void
1869prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1870{
1871 SV *prev = SvRV (coro_current);
1872
1873 if (coro_nready)
1874 {
1875 prepare_schedule (aTHX_ ta);
1876 api_ready (aTHX_ prev);
1877 }
1878 else
1879 prepare_nop (aTHX_ ta);
1880}
1881
1882static void
1883api_schedule (pTHX)
1884{
1885 struct coro_transfer_args ta;
1886
1887 prepare_schedule (aTHX_ &ta);
1888 TRANSFER (ta, 1);
1889}
1890
1891static void
1892api_schedule_to (pTHX_ SV *coro_sv)
1893{
1894 struct coro_transfer_args ta;
1895 struct coro *next = SvSTATE (coro_sv);
1896
1897 SvREFCNT_inc_NN (coro_sv);
1898 prepare_schedule_to (aTHX_ &ta, next);
1899}
1900
1426static int 1901static int
1427prepare_cede_notself (pTHX_ struct transfer_args *ta) 1902api_cede (pTHX)
1428{ 1903{
1429 if (coro_nready) 1904 struct coro_transfer_args ta;
1430 { 1905
1431 SV *prev = SvRV (coro_current);
1432 prepare_schedule (aTHX_ ta); 1906 prepare_cede (aTHX_ &ta);
1433 api_ready (prev); 1907
1908 if (expect_true (ta.prev != ta.next))
1909 {
1910 TRANSFER (ta, 1);
1434 return 1; 1911 return 1;
1435 } 1912 }
1436 else 1913 else
1437 return 0; 1914 return 0;
1438} 1915}
1439 1916
1440static void
1441api_schedule (void)
1442{
1443 dTHX;
1444 struct transfer_args ta;
1445
1446 prepare_schedule (aTHX_ &ta);
1447 TRANSFER (ta);
1448}
1449
1450static int 1917static int
1451api_cede (void) 1918api_cede_notself (pTHX)
1452{ 1919{
1453 dTHX; 1920 if (coro_nready)
1921 {
1454 struct transfer_args ta; 1922 struct coro_transfer_args ta;
1455 1923
1456 prepare_cede (aTHX_ &ta); 1924 prepare_cede_notself (aTHX_ &ta);
1457
1458 if (expect_true (ta.prev != ta.next))
1459 {
1460 TRANSFER (ta); 1925 TRANSFER (ta, 1);
1461 return 1; 1926 return 1;
1462 } 1927 }
1463 else 1928 else
1464 return 0; 1929 return 0;
1465} 1930}
1466 1931
1467static int 1932static void
1468api_cede_notself (void)
1469{
1470 dTHX;
1471 struct transfer_args ta;
1472
1473 if (prepare_cede_notself (aTHX_ &ta))
1474 {
1475 TRANSFER (ta);
1476 return 1;
1477 }
1478 else
1479 return 0;
1480}
1481
1482static void
1483api_trace (SV *coro_sv, int flags) 1933api_trace (pTHX_ SV *coro_sv, int flags)
1484{ 1934{
1485 dTHX;
1486 struct coro *coro = SvSTATE (coro_sv); 1935 struct coro *coro = SvSTATE (coro_sv);
1487 1936
1937 if (coro->flags & CF_RUNNING)
1938 croak ("cannot enable tracing on a running coroutine, caught");
1939
1488 if (flags & CC_TRACE) 1940 if (flags & CC_TRACE)
1489 { 1941 {
1490 if (!coro->cctx) 1942 if (!coro->cctx)
1491 coro->cctx = cctx_new (); 1943 coro->cctx = cctx_new_run ();
1492 else if (!(coro->cctx->flags & CC_TRACE)) 1944 else if (!(coro->cctx->flags & CC_TRACE))
1493 croak ("cannot enable tracing on coroutine with custom stack"); 1945 croak ("cannot enable tracing on coroutine with custom stack, caught");
1494 1946
1495 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1947 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1496 } 1948 }
1497 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1949 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1498 { 1950 {
… …
1503 else 1955 else
1504 coro->slot->runops = RUNOPS_DEFAULT; 1956 coro->slot->runops = RUNOPS_DEFAULT;
1505 } 1957 }
1506} 1958}
1507 1959
1960static void
1961coro_call_on_destroy (pTHX_ struct coro *coro)
1962{
1963 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1964 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1965
1966 if (on_destroyp)
1967 {
1968 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1969
1970 while (AvFILLp (on_destroy) >= 0)
1971 {
1972 dSP; /* don't disturb outer sp */
1973 SV *cb = av_pop (on_destroy);
1974
1975 PUSHMARK (SP);
1976
1977 if (statusp)
1978 {
1979 int i;
1980 AV *status = (AV *)SvRV (*statusp);
1981 EXTEND (SP, AvFILLp (status) + 1);
1982
1983 for (i = 0; i <= AvFILLp (status); ++i)
1984 PUSHs (AvARRAY (status)[i]);
1985 }
1986
1987 PUTBACK;
1988 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1989 }
1990 }
1991}
1992
1993static void
1994slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1995{
1996 int i;
1997 HV *hv = (HV *)SvRV (coro_current);
1998 AV *av = newAV ();
1999
2000 av_extend (av, items - 1);
2001 for (i = 0; i < items; ++i)
2002 av_push (av, SvREFCNT_inc_NN (arg [i]));
2003
2004 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2005
2006 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2007 api_ready (aTHX_ sv_manager);
2008
2009 frame->prepare = prepare_schedule;
2010 frame->check = slf_check_repeat;
2011
2012 /* as a minor optimisation, we could unwind all stacks here */
2013 /* but that puts extra pressure on pp_slf, and is not worth much */
2014 /*coro_unwind_stacks (aTHX);*/
2015}
2016
2017/*****************************************************************************/
2018/* async pool handler */
2019
2020static int
2021slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2022{
2023 HV *hv = (HV *)SvRV (coro_current);
2024 struct coro *coro = (struct coro *)frame->data;
2025
2026 if (!coro->invoke_cb)
2027 return 1; /* loop till we have invoke */
2028 else
2029 {
2030 hv_store (hv, "desc", sizeof ("desc") - 1,
2031 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2032
2033 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2034
2035 {
2036 dSP;
2037 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2038 PUTBACK;
2039 }
2040
2041 SvREFCNT_dec (GvAV (PL_defgv));
2042 GvAV (PL_defgv) = coro->invoke_av;
2043 coro->invoke_av = 0;
2044
2045 return 0;
2046 }
2047}
2048
2049static void
2050slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2051{
2052 HV *hv = (HV *)SvRV (coro_current);
2053 struct coro *coro = SvSTATE_hv ((SV *)hv);
2054
2055 if (expect_true (coro->saved_deffh))
2056 {
2057 /* subsequent iteration */
2058 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2059 coro->saved_deffh = 0;
2060
2061 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2062 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2063 {
2064 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2065 coro->invoke_av = newAV ();
2066
2067 frame->prepare = prepare_nop;
2068 }
2069 else
2070 {
2071 av_clear (GvAV (PL_defgv));
2072 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2073
2074 coro->prio = 0;
2075
2076 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2077 api_trace (aTHX_ coro_current, 0);
2078
2079 frame->prepare = prepare_schedule;
2080 av_push (av_async_pool, SvREFCNT_inc (hv));
2081 }
2082 }
2083 else
2084 {
2085 /* first iteration, simply fall through */
2086 frame->prepare = prepare_nop;
2087 }
2088
2089 frame->check = slf_check_pool_handler;
2090 frame->data = (void *)coro;
2091}
2092
2093/*****************************************************************************/
2094/* rouse callback */
2095
2096#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2097
2098static void
2099coro_rouse_callback (pTHX_ CV *cv)
2100{
2101 dXSARGS;
2102 SV *data = (SV *)GENSUB_ARG;
2103
2104 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2105 {
2106 /* first call, set args */
2107 SV *coro = SvRV (data);
2108 AV *av = newAV ();
2109
2110 SvRV_set (data, (SV *)av);
2111
2112 /* better take a full copy of the arguments */
2113 while (items--)
2114 av_store (av, items, newSVsv (ST (items)));
2115
2116 api_ready (aTHX_ coro);
2117 SvREFCNT_dec (coro);
2118 }
2119
2120 XSRETURN_EMPTY;
2121}
2122
2123static int
2124slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2125{
2126 SV *data = (SV *)frame->data;
2127
2128 if (CORO_THROW)
2129 return 0;
2130
2131 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2132 return 1;
2133
2134 /* now push all results on the stack */
2135 {
2136 dSP;
2137 AV *av = (AV *)SvRV (data);
2138 int i;
2139
2140 EXTEND (SP, AvFILLp (av) + 1);
2141 for (i = 0; i <= AvFILLp (av); ++i)
2142 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2143
2144 /* we have stolen the elements, so set length to zero and free */
2145 AvFILLp (av) = -1;
2146 av_undef (av);
2147
2148 PUTBACK;
2149 }
2150
2151 return 0;
2152}
2153
2154static void
2155slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 SV *cb;
2158
2159 if (items)
2160 cb = arg [0];
2161 else
2162 {
2163 struct coro *coro = SvSTATE_current;
2164
2165 if (!coro->rouse_cb)
2166 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2167
2168 cb = sv_2mortal (coro->rouse_cb);
2169 coro->rouse_cb = 0;
2170 }
2171
2172 if (!SvROK (cb)
2173 || SvTYPE (SvRV (cb)) != SVt_PVCV
2174 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2175 croak ("Coro::rouse_wait called with illegal callback argument,");
2176
2177 {
2178 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2179 SV *data = (SV *)GENSUB_ARG;
2180
2181 frame->data = (void *)data;
2182 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2183 frame->check = slf_check_rouse_wait;
2184 }
2185}
2186
2187static SV *
2188coro_new_rouse_cb (pTHX)
2189{
2190 HV *hv = (HV *)SvRV (coro_current);
2191 struct coro *coro = SvSTATE_hv (hv);
2192 SV *data = newRV_inc ((SV *)hv);
2193 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2194
2195 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2196 SvREFCNT_dec (data); /* magicext increases the refcount */
2197
2198 SvREFCNT_dec (coro->rouse_cb);
2199 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2200
2201 return cb;
2202}
2203
2204/*****************************************************************************/
2205/* schedule-like-function opcode (SLF) */
2206
2207static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2208static const CV *slf_cv;
2209static SV **slf_argv;
2210static int slf_argc, slf_arga; /* count, allocated */
2211static I32 slf_ax; /* top of stack, for restore */
2212
2213/* this restores the stack in the case we patched the entersub, to */
2214/* recreate the stack frame as perl will on following calls */
2215/* since entersub cleared the stack */
2216static OP *
2217pp_restore (pTHX)
2218{
2219 int i;
2220 SV **SP = PL_stack_base + slf_ax;
2221
2222 PUSHMARK (SP);
2223
2224 EXTEND (SP, slf_argc + 1);
2225
2226 for (i = 0; i < slf_argc; ++i)
2227 PUSHs (sv_2mortal (slf_argv [i]));
2228
2229 PUSHs ((SV *)CvGV (slf_cv));
2230
2231 RETURNOP (slf_restore.op_first);
2232}
2233
2234static void
2235slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2236{
2237 SV **arg = (SV **)slf_frame.data;
2238
2239 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2240}
2241
2242static void
2243slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2244{
2245 if (items != 2)
2246 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2247
2248 frame->prepare = slf_prepare_transfer;
2249 frame->check = slf_check_nop;
2250 frame->data = (void *)arg; /* let's hope it will stay valid */
2251}
2252
2253static void
2254slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2255{
2256 frame->prepare = prepare_schedule;
2257 frame->check = slf_check_nop;
2258}
2259
2260static void
2261slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2262{
2263 struct coro *next = (struct coro *)slf_frame.data;
2264
2265 SvREFCNT_inc_NN (next->hv);
2266 prepare_schedule_to (aTHX_ ta, next);
2267}
2268
2269static void
2270slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2271{
2272 if (!items)
2273 croak ("Coro::schedule_to expects a coroutine argument, caught");
2274
2275 frame->data = (void *)SvSTATE (arg [0]);
2276 frame->prepare = slf_prepare_schedule_to;
2277 frame->check = slf_check_nop;
2278}
2279
2280static void
2281slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2282{
2283 api_ready (aTHX_ SvRV (coro_current));
2284
2285 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2286}
2287
2288static void
2289slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2290{
2291 frame->prepare = prepare_cede;
2292 frame->check = slf_check_nop;
2293}
2294
2295static void
2296slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2297{
2298 frame->prepare = prepare_cede_notself;
2299 frame->check = slf_check_nop;
2300}
2301
2302/*
2303 * these not obviously related functions are all rolled into one
2304 * function to increase chances that they all will call transfer with the same
2305 * stack offset
2306 * SLF stands for "schedule-like-function".
2307 */
2308static OP *
2309pp_slf (pTHX)
2310{
2311 I32 checkmark; /* mark SP to see how many elements check has pushed */
2312
2313 /* set up the slf frame, unless it has already been set-up */
2314 /* the latter happens when a new coro has been started */
2315 /* or when a new cctx was attached to an existing coroutine */
2316 if (expect_true (!slf_frame.prepare))
2317 {
2318 /* first iteration */
2319 dSP;
2320 SV **arg = PL_stack_base + TOPMARK + 1;
2321 int items = SP - arg; /* args without function object */
2322 SV *gv = *sp;
2323
2324 /* do a quick consistency check on the "function" object, and if it isn't */
2325 /* for us, divert to the real entersub */
2326 if (SvTYPE (gv) != SVt_PVGV
2327 || !GvCV (gv)
2328 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2329 return PL_ppaddr[OP_ENTERSUB](aTHX);
2330
2331 if (!(PL_op->op_flags & OPf_STACKED))
2332 {
2333 /* ampersand-form of call, use @_ instead of stack */
2334 AV *av = GvAV (PL_defgv);
2335 arg = AvARRAY (av);
2336 items = AvFILLp (av) + 1;
2337 }
2338
2339 /* now call the init function, which needs to set up slf_frame */
2340 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2341 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2342
2343 /* pop args */
2344 SP = PL_stack_base + POPMARK;
2345
2346 PUTBACK;
2347 }
2348
2349 /* now that we have a slf_frame, interpret it! */
2350 /* we use a callback system not to make the code needlessly */
2351 /* complicated, but so we can run multiple perl coros from one cctx */
2352
2353 do
2354 {
2355 struct coro_transfer_args ta;
2356
2357 slf_frame.prepare (aTHX_ &ta);
2358 TRANSFER (ta, 0);
2359
2360 checkmark = PL_stack_sp - PL_stack_base;
2361 }
2362 while (slf_frame.check (aTHX_ &slf_frame));
2363
2364 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2365
2366 /* exception handling */
2367 if (expect_false (CORO_THROW))
2368 {
2369 SV *exception = sv_2mortal (CORO_THROW);
2370
2371 CORO_THROW = 0;
2372 sv_setsv (ERRSV, exception);
2373 croak (0);
2374 }
2375
2376 /* return value handling - mostly like entersub */
2377 /* make sure we put something on the stack in scalar context */
2378 if (GIMME_V == G_SCALAR)
2379 {
2380 dSP;
2381 SV **bot = PL_stack_base + checkmark;
2382
2383 if (sp == bot) /* too few, push undef */
2384 bot [1] = &PL_sv_undef;
2385 else if (sp != bot + 1) /* too many, take last one */
2386 bot [1] = *sp;
2387
2388 SP = bot + 1;
2389
2390 PUTBACK;
2391 }
2392
2393 return NORMAL;
2394}
2395
2396static void
2397api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2398{
2399 int i;
2400 SV **arg = PL_stack_base + ax;
2401 int items = PL_stack_sp - arg + 1;
2402
2403 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2404
2405 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2406 && PL_op->op_ppaddr != pp_slf)
2407 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2408
2409 CvFLAGS (cv) |= CVf_SLF;
2410 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2411 slf_cv = cv;
2412
2413 /* we patch the op, and then re-run the whole call */
2414 /* we have to put the same argument on the stack for this to work */
2415 /* and this will be done by pp_restore */
2416 slf_restore.op_next = (OP *)&slf_restore;
2417 slf_restore.op_type = OP_CUSTOM;
2418 slf_restore.op_ppaddr = pp_restore;
2419 slf_restore.op_first = PL_op;
2420
2421 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2422
2423 if (PL_op->op_flags & OPf_STACKED)
2424 {
2425 if (items > slf_arga)
2426 {
2427 slf_arga = items;
2428 free (slf_argv);
2429 slf_argv = malloc (slf_arga * sizeof (SV *));
2430 }
2431
2432 slf_argc = items;
2433
2434 for (i = 0; i < items; ++i)
2435 slf_argv [i] = SvREFCNT_inc (arg [i]);
2436 }
2437 else
2438 slf_argc = 0;
2439
2440 PL_op->op_ppaddr = pp_slf;
2441 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2442
2443 PL_op = (OP *)&slf_restore;
2444}
2445
2446/*****************************************************************************/
2447/* dynamic wind */
2448
2449static void
2450on_enterleave_call (pTHX_ SV *cb)
2451{
2452 dSP;
2453
2454 PUSHSTACK;
2455
2456 PUSHMARK (SP);
2457 PUTBACK;
2458 call_sv (cb, G_VOID | G_DISCARD);
2459 SPAGAIN;
2460
2461 POPSTACK;
2462}
2463
2464static SV *
2465coro_avp_pop_and_free (pTHX_ AV **avp)
2466{
2467 AV *av = *avp;
2468 SV *res = av_pop (av);
2469
2470 if (AvFILLp (av) < 0)
2471 {
2472 *avp = 0;
2473 SvREFCNT_dec (av);
2474 }
2475
2476 return res;
2477}
2478
2479static void
2480coro_pop_on_enter (pTHX_ void *coro)
2481{
2482 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2483 SvREFCNT_dec (cb);
2484}
2485
2486static void
2487coro_pop_on_leave (pTHX_ void *coro)
2488{
2489 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2490 on_enterleave_call (aTHX_ sv_2mortal (cb));
2491}
2492
2493/*****************************************************************************/
2494/* PerlIO::cede */
2495
2496typedef struct
2497{
2498 PerlIOBuf base;
2499 NV next, every;
2500} PerlIOCede;
2501
2502static IV
2503PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2504{
2505 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2506
2507 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2508 self->next = nvtime () + self->every;
2509
2510 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2511}
2512
2513static SV *
2514PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2515{
2516 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2517
2518 return newSVnv (self->every);
2519}
2520
2521static IV
2522PerlIOCede_flush (pTHX_ PerlIO *f)
2523{
2524 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2525 double now = nvtime ();
2526
2527 if (now >= self->next)
2528 {
2529 api_cede (aTHX);
2530 self->next = now + self->every;
2531 }
2532
2533 return PerlIOBuf_flush (aTHX_ f);
2534}
2535
2536static PerlIO_funcs PerlIO_cede =
2537{
2538 sizeof(PerlIO_funcs),
2539 "cede",
2540 sizeof(PerlIOCede),
2541 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2542 PerlIOCede_pushed,
2543 PerlIOBuf_popped,
2544 PerlIOBuf_open,
2545 PerlIOBase_binmode,
2546 PerlIOCede_getarg,
2547 PerlIOBase_fileno,
2548 PerlIOBuf_dup,
2549 PerlIOBuf_read,
2550 PerlIOBuf_unread,
2551 PerlIOBuf_write,
2552 PerlIOBuf_seek,
2553 PerlIOBuf_tell,
2554 PerlIOBuf_close,
2555 PerlIOCede_flush,
2556 PerlIOBuf_fill,
2557 PerlIOBase_eof,
2558 PerlIOBase_error,
2559 PerlIOBase_clearerr,
2560 PerlIOBase_setlinebuf,
2561 PerlIOBuf_get_base,
2562 PerlIOBuf_bufsiz,
2563 PerlIOBuf_get_ptr,
2564 PerlIOBuf_get_cnt,
2565 PerlIOBuf_set_ptrcnt,
2566};
2567
2568/*****************************************************************************/
2569/* Coro::Semaphore & Coro::Signal */
2570
2571static SV *
2572coro_waitarray_new (pTHX_ int count)
2573{
2574 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2575 AV *av = newAV ();
2576 SV **ary;
2577
2578 /* unfortunately, building manually saves memory */
2579 Newx (ary, 2, SV *);
2580 AvALLOC (av) = ary;
2581#if PERL_VERSION_ATLEAST (5,10,0)
2582 AvARRAY (av) = ary;
2583#else
2584 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2585 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2586 SvPVX ((SV *)av) = (char *)ary;
2587#endif
2588 AvMAX (av) = 1;
2589 AvFILLp (av) = 0;
2590 ary [0] = newSViv (count);
2591
2592 return newRV_noinc ((SV *)av);
2593}
2594
2595/* semaphore */
2596
2597static void
2598coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2599{
2600 SV *count_sv = AvARRAY (av)[0];
2601 IV count = SvIVX (count_sv);
2602
2603 count += adjust;
2604 SvIVX (count_sv) = count;
2605
2606 /* now wake up as many waiters as are expected to lock */
2607 while (count > 0 && AvFILLp (av) > 0)
2608 {
2609 SV *cb;
2610
2611 /* swap first two elements so we can shift a waiter */
2612 AvARRAY (av)[0] = AvARRAY (av)[1];
2613 AvARRAY (av)[1] = count_sv;
2614 cb = av_shift (av);
2615
2616 if (SvOBJECT (cb))
2617 {
2618 api_ready (aTHX_ cb);
2619 --count;
2620 }
2621 else if (SvTYPE (cb) == SVt_PVCV)
2622 {
2623 dSP;
2624 PUSHMARK (SP);
2625 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2626 PUTBACK;
2627 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2628 }
2629
2630 SvREFCNT_dec (cb);
2631 }
2632}
2633
2634static void
2635coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2636{
2637 /* call $sem->adjust (0) to possibly wake up some other waiters */
2638 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2639}
2640
2641static int
2642slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2643{
2644 AV *av = (AV *)frame->data;
2645 SV *count_sv = AvARRAY (av)[0];
2646
2647 /* if we are about to throw, don't actually acquire the lock, just throw */
2648 if (CORO_THROW)
2649 return 0;
2650 else if (SvIVX (count_sv) > 0)
2651 {
2652 SvSTATE_current->on_destroy = 0;
2653
2654 if (acquire)
2655 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2656 else
2657 coro_semaphore_adjust (aTHX_ av, 0);
2658
2659 return 0;
2660 }
2661 else
2662 {
2663 int i;
2664 /* if we were woken up but can't down, we look through the whole */
2665 /* waiters list and only add us if we aren't in there already */
2666 /* this avoids some degenerate memory usage cases */
2667
2668 for (i = 1; i <= AvFILLp (av); ++i)
2669 if (AvARRAY (av)[i] == SvRV (coro_current))
2670 return 1;
2671
2672 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2673 return 1;
2674 }
2675}
2676
2677static int
2678slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2679{
2680 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2681}
2682
2683static int
2684slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2685{
2686 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2687}
2688
2689static void
2690slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2691{
2692 AV *av = (AV *)SvRV (arg [0]);
2693
2694 if (SvIVX (AvARRAY (av)[0]) > 0)
2695 {
2696 frame->data = (void *)av;
2697 frame->prepare = prepare_nop;
2698 }
2699 else
2700 {
2701 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2702
2703 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2704 frame->prepare = prepare_schedule;
2705
2706 /* to avoid race conditions when a woken-up coro gets terminated */
2707 /* we arrange for a temporary on_destroy that calls adjust (0) */
2708 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2709 }
2710}
2711
2712static void
2713slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2714{
2715 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2716 frame->check = slf_check_semaphore_down;
2717}
2718
2719static void
2720slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2721{
2722 if (items >= 2)
2723 {
2724 /* callback form */
2725 AV *av = (AV *)SvRV (arg [0]);
2726 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2727
2728 av_push (av, SvREFCNT_inc_NN (cb_cv));
2729
2730 if (SvIVX (AvARRAY (av)[0]) > 0)
2731 coro_semaphore_adjust (aTHX_ av, 0);
2732
2733 frame->prepare = prepare_nop;
2734 frame->check = slf_check_nop;
2735 }
2736 else
2737 {
2738 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2739 frame->check = slf_check_semaphore_wait;
2740 }
2741}
2742
2743/* signal */
2744
2745static void
2746coro_signal_wake (pTHX_ AV *av, int count)
2747{
2748 SvIVX (AvARRAY (av)[0]) = 0;
2749
2750 /* now signal count waiters */
2751 while (count > 0 && AvFILLp (av) > 0)
2752 {
2753 SV *cb;
2754
2755 /* swap first two elements so we can shift a waiter */
2756 cb = AvARRAY (av)[0];
2757 AvARRAY (av)[0] = AvARRAY (av)[1];
2758 AvARRAY (av)[1] = cb;
2759
2760 cb = av_shift (av);
2761
2762 if (SvTYPE (cb) == SVt_PVCV)
2763 {
2764 dSP;
2765 PUSHMARK (SP);
2766 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2767 PUTBACK;
2768 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2769 }
2770 else
2771 {
2772 api_ready (aTHX_ cb);
2773 sv_setiv (cb, 0); /* signal waiter */
2774 }
2775
2776 SvREFCNT_dec (cb);
2777
2778 --count;
2779 }
2780}
2781
2782static int
2783slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2784{
2785 /* if we are about to throw, also stop waiting */
2786 return SvROK ((SV *)frame->data) && !CORO_THROW;
2787}
2788
2789static void
2790slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2791{
2792 AV *av = (AV *)SvRV (arg [0]);
2793
2794 if (items >= 2)
2795 {
2796 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2797 av_push (av, SvREFCNT_inc_NN (cb_cv));
2798
2799 if (SvIVX (AvARRAY (av)[0]))
2800 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2801
2802 frame->prepare = prepare_nop;
2803 frame->check = slf_check_nop;
2804 }
2805 else if (SvIVX (AvARRAY (av)[0]))
2806 {
2807 SvIVX (AvARRAY (av)[0]) = 0;
2808 frame->prepare = prepare_nop;
2809 frame->check = slf_check_nop;
2810 }
2811 else
2812 {
2813 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2814
2815 av_push (av, waiter);
2816
2817 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2818 frame->prepare = prepare_schedule;
2819 frame->check = slf_check_signal_wait;
2820 }
2821}
2822
2823/*****************************************************************************/
2824/* Coro::AIO */
2825
2826#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2827
2828/* helper storage struct */
2829struct io_state
2830{
2831 int errorno;
2832 I32 laststype; /* U16 in 5.10.0 */
2833 int laststatval;
2834 Stat_t statcache;
2835};
2836
2837static void
2838coro_aio_callback (pTHX_ CV *cv)
2839{
2840 dXSARGS;
2841 AV *state = (AV *)GENSUB_ARG;
2842 SV *coro = av_pop (state);
2843 SV *data_sv = newSV (sizeof (struct io_state));
2844
2845 av_extend (state, items - 1);
2846
2847 sv_upgrade (data_sv, SVt_PV);
2848 SvCUR_set (data_sv, sizeof (struct io_state));
2849 SvPOK_only (data_sv);
2850
2851 {
2852 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2853
2854 data->errorno = errno;
2855 data->laststype = PL_laststype;
2856 data->laststatval = PL_laststatval;
2857 data->statcache = PL_statcache;
2858 }
2859
2860 /* now build the result vector out of all the parameters and the data_sv */
2861 {
2862 int i;
2863
2864 for (i = 0; i < items; ++i)
2865 av_push (state, SvREFCNT_inc_NN (ST (i)));
2866 }
2867
2868 av_push (state, data_sv);
2869
2870 api_ready (aTHX_ coro);
2871 SvREFCNT_dec (coro);
2872 SvREFCNT_dec ((AV *)state);
2873}
2874
2875static int
2876slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2877{
2878 AV *state = (AV *)frame->data;
2879
2880 /* if we are about to throw, return early */
2881 /* this does not cancel the aio request, but at least */
2882 /* it quickly returns */
2883 if (CORO_THROW)
2884 return 0;
2885
2886 /* one element that is an RV? repeat! */
2887 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2888 return 1;
2889
2890 /* restore status */
2891 {
2892 SV *data_sv = av_pop (state);
2893 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2894
2895 errno = data->errorno;
2896 PL_laststype = data->laststype;
2897 PL_laststatval = data->laststatval;
2898 PL_statcache = data->statcache;
2899
2900 SvREFCNT_dec (data_sv);
2901 }
2902
2903 /* push result values */
2904 {
2905 dSP;
2906 int i;
2907
2908 EXTEND (SP, AvFILLp (state) + 1);
2909 for (i = 0; i <= AvFILLp (state); ++i)
2910 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2911
2912 PUTBACK;
2913 }
2914
2915 return 0;
2916}
2917
2918static void
2919slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2920{
2921 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2922 SV *coro_hv = SvRV (coro_current);
2923 struct coro *coro = SvSTATE_hv (coro_hv);
2924
2925 /* put our coroutine id on the state arg */
2926 av_push (state, SvREFCNT_inc_NN (coro_hv));
2927
2928 /* first see whether we have a non-zero priority and set it as AIO prio */
2929 if (coro->prio)
2930 {
2931 dSP;
2932
2933 static SV *prio_cv;
2934 static SV *prio_sv;
2935
2936 if (expect_false (!prio_cv))
2937 {
2938 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2939 prio_sv = newSViv (0);
2940 }
2941
2942 PUSHMARK (SP);
2943 sv_setiv (prio_sv, coro->prio);
2944 XPUSHs (prio_sv);
2945
2946 PUTBACK;
2947 call_sv (prio_cv, G_VOID | G_DISCARD);
2948 }
2949
2950 /* now call the original request */
2951 {
2952 dSP;
2953 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2954 int i;
2955
2956 PUSHMARK (SP);
2957
2958 /* first push all args to the stack */
2959 EXTEND (SP, items + 1);
2960
2961 for (i = 0; i < items; ++i)
2962 PUSHs (arg [i]);
2963
2964 /* now push the callback closure */
2965 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2966
2967 /* now call the AIO function - we assume our request is uncancelable */
2968 PUTBACK;
2969 call_sv ((SV *)req, G_VOID | G_DISCARD);
2970 }
2971
2972 /* now that the requets is going, we loop toll we have a result */
2973 frame->data = (void *)state;
2974 frame->prepare = prepare_schedule;
2975 frame->check = slf_check_aio_req;
2976}
2977
2978static void
2979coro_aio_req_xs (pTHX_ CV *cv)
2980{
2981 dXSARGS;
2982
2983 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2984
2985 XSRETURN_EMPTY;
2986}
2987
2988/*****************************************************************************/
2989
2990#if CORO_CLONE
2991# include "clone.c"
2992#endif
2993
1508MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2994MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1509 2995
1510PROTOTYPES: DISABLE 2996PROTOTYPES: DISABLE
1511 2997
1512BOOT: 2998BOOT:
1513{ 2999{
1514#ifdef USE_ITHREADS 3000#ifdef USE_ITHREADS
1515 MUTEX_INIT (&coro_mutex); 3001# if CORO_PTHREAD
3002 coro_thx = PERL_GET_CONTEXT;
3003# endif
1516#endif 3004#endif
1517 BOOT_PAGESIZE; 3005 BOOT_PAGESIZE;
3006
3007 cctx_current = cctx_new_empty ();
1518 3008
1519 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3009 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1520 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3010 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1521 3011
3012 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
3013 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
3014 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
3015
1522 hv_sig = coro_get_hv ("SIG", TRUE); 3016 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1523 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 3017 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1524 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 3018 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1525
1526 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1527 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1528 3019
1529 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3020 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1530 3021
1531 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3022 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1532 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3023 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1537 main_top_env = PL_top_env; 3028 main_top_env = PL_top_env;
1538 3029
1539 while (main_top_env->je_prev) 3030 while (main_top_env->je_prev)
1540 main_top_env = main_top_env->je_prev; 3031 main_top_env = main_top_env->je_prev;
1541 3032
3033 {
3034 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3035
3036 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3037 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3038
3039 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3040 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3041 }
3042
1542 coroapi.ver = CORO_API_VERSION; 3043 coroapi.ver = CORO_API_VERSION;
3044 coroapi.rev = CORO_API_REVISION;
3045
1543 coroapi.transfer = api_transfer; 3046 coroapi.transfer = api_transfer;
1544 3047
3048 coroapi.sv_state = SvSTATE_;
3049 coroapi.execute_slf = api_execute_slf;
3050 coroapi.prepare_nop = prepare_nop;
3051 coroapi.prepare_schedule = prepare_schedule;
3052 coroapi.prepare_cede = prepare_cede;
3053 coroapi.prepare_cede_notself = prepare_cede_notself;
3054
3055 {
3056 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3057
3058 if (!svp) croak ("Time::HiRes is required");
3059 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3060
3061 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3062
3063 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3064 u2time = INT2PTR (double (*)(), SvIV (*svp));
3065 }
3066
1545 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3067 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1546} 3068}
1547 3069
1548SV * 3070SV *
1549new (char *klass, ...) 3071new (char *klass, ...)
3072 ALIAS:
3073 Coro::new = 1
1550 CODE: 3074 CODE:
1551{ 3075{
1552 struct coro *coro; 3076 struct coro *coro;
3077 MAGIC *mg;
1553 HV *hv; 3078 HV *hv;
3079 CV *cb;
1554 int i; 3080 int i;
3081
3082 if (items > 1)
3083 {
3084 cb = coro_sv_2cv (aTHX_ ST (1));
3085
3086 if (!ix)
3087 {
3088 if (CvISXSUB (cb))
3089 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3090
3091 if (!CvROOT (cb))
3092 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3093 }
3094 }
1555 3095
1556 Newz (0, coro, 1, struct coro); 3096 Newz (0, coro, 1, struct coro);
1557 coro->args = newAV (); 3097 coro->args = newAV ();
1558 coro->flags = CF_NEW; 3098 coro->flags = CF_NEW;
1559 3099
1560 if (coro_first) coro_first->prev = coro; 3100 if (coro_first) coro_first->prev = coro;
1561 coro->next = coro_first; 3101 coro->next = coro_first;
1562 coro_first = coro; 3102 coro_first = coro;
1563 3103
1564 coro->hv = hv = newHV (); 3104 coro->hv = hv = newHV ();
1565 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 3105 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3106 mg->mg_flags |= MGf_DUP;
1566 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3107 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1567 3108
3109 if (items > 1)
3110 {
1568 av_extend (coro->args, items - 1); 3111 av_extend (coro->args, items - 1 + ix - 1);
3112
3113 if (ix)
3114 {
3115 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3116 cb = cv_coro_run;
3117 }
3118
3119 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3120
1569 for (i = 1; i < items; i++) 3121 for (i = 2; i < items; i++)
1570 av_push (coro->args, newSVsv (ST (i))); 3122 av_push (coro->args, newSVsv (ST (i)));
3123 }
1571} 3124}
1572 OUTPUT: 3125 OUTPUT:
1573 RETVAL 3126 RETVAL
1574 3127
1575# these not obviously related functions are all rolled into the same xs
1576# function to increase chances that they all will call transfer with the same
1577# stack offset
1578void 3128void
1579_set_stacklevel (...) 3129transfer (...)
1580 ALIAS: 3130 PROTOTYPE: $$
1581 Coro::State::transfer = 1 3131 CODE:
1582 Coro::schedule = 2 3132 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1583 Coro::cede = 3
1584 Coro::cede_notself = 4
1585 Coro::Event::next = 5
1586 Coro::Event::next_cancel = 6
1587 PPCODE:
1588{
1589 struct transfer_args ta;
1590 int again = 0;
1591
1592 do
1593 {
1594 switch (ix)
1595 {
1596 case 0:
1597 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1598 ta.next = 0;
1599 break;
1600
1601 case 1:
1602 if (items != 2)
1603 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1604
1605 prepare_transfer (aTHX_ &ta, ST(0), ST(1));
1606 break;
1607
1608 case 2:
1609 prepare_schedule (aTHX_ &ta);
1610 break;
1611
1612 case 3:
1613 prepare_cede (aTHX_ &ta);
1614 break;
1615
1616 case 4:
1617 if (!prepare_cede_notself (aTHX_ &ta))
1618 XSRETURN_EMPTY;
1619
1620 break;
1621
1622 case 5:
1623 case 6:
1624 if (items != 1)
1625 croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1626
1627 {
1628 SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1629
1630 if (ev)
1631 {
1632 if (GIMME_V != G_VOID)
1633 {
1634 XPUSHs (ev);
1635 XSRETURN (1);
1636 }
1637 else
1638 XSRETURN_EMPTY;
1639 }
1640 }
1641
1642 prepare_schedule (aTHX_ &ta);
1643 again = 1;
1644 break;
1645 }
1646
1647 /* our caller, entersub, caches *only* this value */
1648 ta.prev->gimme = GIMME_V == G_VOID ? 0
1649 : GIMME_V == G_SCALAR ? 1
1650 : 2;
1651
1652 /* we need to save all local variables, as we might execute a different coroutine when transfer returns */
1653 sp += 2; /* save args */
1654 EXTEND (SP, 4);
1655 PUSHs ((SV *)(intptr_t)items);
1656 PUSHs ((SV *)(intptr_t)ix);
1657 PUSHs ((SV *)(intptr_t)ax);
1658 PUSHs ((SV *)(intptr_t)again);
1659 PUTBACK;
1660 BARRIER;
1661 TRANSFER (ta);
1662 BARRIER;
1663 SPAGAIN;
1664 again = (intptr_t)POPs;
1665 ax = (intptr_t)POPs;
1666 ix = (intptr_t)POPs;
1667 items = (intptr_t)POPs;
1668 sp -= 2; /* restore args */
1669 }
1670 while (again);
1671
1672 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1673 XSRETURN_YES;
1674
1675 XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */
1676}
1677 3133
1678bool 3134bool
1679_destroy (SV *coro_sv) 3135_destroy (SV *coro_sv)
1680 CODE: 3136 CODE:
1681 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3137 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1682 OUTPUT: 3138 OUTPUT:
1683 RETVAL 3139 RETVAL
1684 3140
1685void 3141void
1686_exit (code) 3142_exit (int code)
1687 int code
1688 PROTOTYPE: $ 3143 PROTOTYPE: $
1689 CODE: 3144 CODE:
1690 _exit (code); 3145 _exit (code);
1691 3146
3147SV *
3148clone (Coro::State coro)
3149 CODE:
3150{
3151#if CORO_CLONE
3152 struct coro *ncoro = coro_clone (aTHX_ coro);
3153 MAGIC *mg;
3154 /* TODO: too much duplication */
3155 ncoro->hv = newHV ();
3156 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3157 mg->mg_flags |= MGf_DUP;
3158 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3159#else
3160 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3161#endif
3162}
3163 OUTPUT:
3164 RETVAL
3165
1692int 3166int
1693cctx_stacksize (int new_stacksize = 0) 3167cctx_stacksize (int new_stacksize = 0)
3168 PROTOTYPE: ;$
1694 CODE: 3169 CODE:
1695 RETVAL = coro_stacksize; 3170 RETVAL = cctx_stacksize;
1696 if (new_stacksize) 3171 if (new_stacksize)
3172 {
1697 coro_stacksize = new_stacksize; 3173 cctx_stacksize = new_stacksize;
3174 ++cctx_gen;
3175 }
1698 OUTPUT: 3176 OUTPUT:
1699 RETVAL 3177 RETVAL
1700 3178
1701int 3179int
3180cctx_max_idle (int max_idle = 0)
3181 PROTOTYPE: ;$
3182 CODE:
3183 RETVAL = cctx_max_idle;
3184 if (max_idle > 1)
3185 cctx_max_idle = max_idle;
3186 OUTPUT:
3187 RETVAL
3188
3189int
1702cctx_count () 3190cctx_count ()
3191 PROTOTYPE:
1703 CODE: 3192 CODE:
1704 RETVAL = cctx_count; 3193 RETVAL = cctx_count;
1705 OUTPUT: 3194 OUTPUT:
1706 RETVAL 3195 RETVAL
1707 3196
1708int 3197int
1709cctx_idle () 3198cctx_idle ()
3199 PROTOTYPE:
1710 CODE: 3200 CODE:
1711 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2]; 3201 RETVAL = cctx_idle;
1712 OUTPUT: 3202 OUTPUT:
1713 RETVAL 3203 RETVAL
1714 3204
1715void 3205void
1716list () 3206list ()
3207 PROTOTYPE:
1717 PPCODE: 3208 PPCODE:
1718{ 3209{
1719 struct coro *coro; 3210 struct coro *coro;
1720 for (coro = coro_first; coro; coro = coro->next) 3211 for (coro = coro_first; coro; coro = coro->next)
1721 if (coro->hv) 3212 if (coro->hv)
… …
1726call (Coro::State coro, SV *coderef) 3217call (Coro::State coro, SV *coderef)
1727 ALIAS: 3218 ALIAS:
1728 eval = 1 3219 eval = 1
1729 CODE: 3220 CODE:
1730{ 3221{
1731 if (coro->mainstack) 3222 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1732 { 3223 {
1733 struct coro temp; 3224 struct coro *current = SvSTATE_current;
1734 3225
1735 if (!(coro->flags & CF_RUNNING)) 3226 if (current != coro)
1736 { 3227 {
3228 PUTBACK;
1737 save_perl (aTHX_ &temp); 3229 save_perl (aTHX_ current);
1738 load_perl (aTHX_ coro); 3230 load_perl (aTHX_ coro);
3231 SPAGAIN;
1739 } 3232 }
1740 3233
1741 {
1742 dSP;
1743 ENTER;
1744 SAVETMPS;
1745 PUTBACK;
1746 PUSHSTACK; 3234 PUSHSTACK;
3235
1747 PUSHMARK (SP); 3236 PUSHMARK (SP);
3237 PUTBACK;
1748 3238
1749 if (ix) 3239 if (ix)
1750 eval_sv (coderef, 0); 3240 eval_sv (coderef, 0);
1751 else 3241 else
1752 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3242 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1753 3243
1754 POPSTACK; 3244 POPSTACK;
1755 FREETMPS; 3245 SPAGAIN;
1756 LEAVE;
1757 }
1758 3246
1759 if (!(coro->flags & CF_RUNNING)) 3247 if (current != coro)
1760 { 3248 {
3249 PUTBACK;
1761 save_perl (aTHX_ coro); 3250 save_perl (aTHX_ coro);
1762 load_perl (aTHX_ &temp); 3251 load_perl (aTHX_ current);
3252 SPAGAIN;
1763 } 3253 }
1764 } 3254 }
1765} 3255}
1766 3256
1767SV * 3257SV *
… …
1770 ALIAS: 3260 ALIAS:
1771 is_ready = CF_READY 3261 is_ready = CF_READY
1772 is_running = CF_RUNNING 3262 is_running = CF_RUNNING
1773 is_new = CF_NEW 3263 is_new = CF_NEW
1774 is_destroyed = CF_DESTROYED 3264 is_destroyed = CF_DESTROYED
3265 is_suspended = CF_SUSPENDED
1775 CODE: 3266 CODE:
1776 RETVAL = boolSV (coro->flags & ix); 3267 RETVAL = boolSV (coro->flags & ix);
1777 OUTPUT: 3268 OUTPUT:
1778 RETVAL 3269 RETVAL
1779 3270
1780void 3271void
3272throw (Coro::State self, SV *throw = &PL_sv_undef)
3273 PROTOTYPE: $;$
3274 CODE:
3275{
3276 struct coro *current = SvSTATE_current;
3277 SV **throwp = self == current ? &CORO_THROW : &self->except;
3278 SvREFCNT_dec (*throwp);
3279 SvGETMAGIC (throw);
3280 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3281}
3282
3283void
1781api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3284api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3285 PROTOTYPE: $;$
3286 C_ARGS: aTHX_ coro, flags
1782 3287
1783SV * 3288SV *
1784has_stack (Coro::State coro) 3289has_cctx (Coro::State coro)
1785 PROTOTYPE: $ 3290 PROTOTYPE: $
1786 CODE: 3291 CODE:
1787 RETVAL = boolSV (!!coro->cctx); 3292 /* maybe manage the running flag differently */
3293 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1788 OUTPUT: 3294 OUTPUT:
1789 RETVAL 3295 RETVAL
1790 3296
1791int 3297int
1792is_traced (Coro::State coro) 3298is_traced (Coro::State coro)
… …
1794 CODE: 3300 CODE:
1795 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3301 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796 OUTPUT: 3302 OUTPUT:
1797 RETVAL 3303 RETVAL
1798 3304
1799IV 3305UV
1800rss (Coro::State coro) 3306rss (Coro::State coro)
1801 PROTOTYPE: $ 3307 PROTOTYPE: $
1802 ALIAS: 3308 ALIAS:
1803 usecount = 1 3309 usecount = 1
1804 CODE: 3310 CODE:
… …
1808 case 1: RETVAL = coro->usecount; break; 3314 case 1: RETVAL = coro->usecount; break;
1809 } 3315 }
1810 OUTPUT: 3316 OUTPUT:
1811 RETVAL 3317 RETVAL
1812 3318
3319void
3320force_cctx ()
3321 PROTOTYPE:
3322 CODE:
3323 cctx_current->idle_sp = 0;
3324
3325void
3326swap_defsv (Coro::State self)
3327 PROTOTYPE: $
3328 ALIAS:
3329 swap_defav = 1
3330 CODE:
3331 if (!self->slot)
3332 croak ("cannot swap state with coroutine that has no saved state,");
3333 else
3334 {
3335 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3336 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3337
3338 SV *tmp = *src; *src = *dst; *dst = tmp;
3339 }
3340
3341void
3342cancel (Coro::State self)
3343 CODE:
3344 coro_state_destroy (aTHX_ self);
3345 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3346
3347
3348SV *
3349enable_times (int enabled = enable_times)
3350 CODE:
3351{
3352 RETVAL = boolSV (enable_times);
3353
3354 if (enabled != enable_times)
3355 {
3356 enable_times = enabled;
3357
3358 coro_times_update ();
3359 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3360 }
3361}
3362 OUTPUT:
3363 RETVAL
3364
3365void
3366times (Coro::State self)
3367 PPCODE:
3368{
3369 struct coro *current = SvSTATE (coro_current);
3370
3371 if (expect_false (current == self))
3372 {
3373 coro_times_update ();
3374 coro_times_add (SvSTATE (coro_current));
3375 }
3376
3377 EXTEND (SP, 2);
3378 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3379 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3380
3381 if (expect_false (current == self))
3382 coro_times_sub (SvSTATE (coro_current));
3383}
1813 3384
1814MODULE = Coro::State PACKAGE = Coro 3385MODULE = Coro::State PACKAGE = Coro
1815 3386
1816BOOT: 3387BOOT:
1817{ 3388{
1818 int i;
1819
1820 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE); 3389 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1821 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE); 3390 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3391 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3392 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3393 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1822 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 3394 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3395 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3396 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3397 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1823 3398
1824 coro_current = coro_get_sv ("Coro::current", FALSE); 3399 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1825 SvREADONLY_on (coro_current); 3400 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3401 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3402 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1826 3403
1827 coro_stash = gv_stashpv ("Coro", TRUE); 3404 coro_stash = gv_stashpv ("Coro", TRUE);
1828 3405
1829 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3406 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1830 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3407 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1831 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3408 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1832 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3409 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1833 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3410 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1834 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3411 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1835
1836 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1837 coro_ready[i] = newAV ();
1838 3412
1839 { 3413 {
1840 SV *sv = perl_get_sv ("Coro::API", TRUE); 3414 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1841 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1842 3415
1843 coroapi.schedule = api_schedule; 3416 coroapi.schedule = api_schedule;
3417 coroapi.schedule_to = api_schedule_to;
1844 coroapi.cede = api_cede; 3418 coroapi.cede = api_cede;
1845 coroapi.cede_notself = api_cede_notself; 3419 coroapi.cede_notself = api_cede_notself;
1846 coroapi.ready = api_ready; 3420 coroapi.ready = api_ready;
1847 coroapi.is_ready = api_is_ready; 3421 coroapi.is_ready = api_is_ready;
1848 coroapi.nready = &coro_nready; 3422 coroapi.nready = coro_nready;
1849 coroapi.current = coro_current; 3423 coroapi.current = coro_current;
1850 3424
1851 GCoroAPI = &coroapi; 3425 /*GCoroAPI = &coroapi;*/
1852 sv_setiv (sv, (IV)&coroapi); 3426 sv_setiv (sv, (IV)&coroapi);
1853 SvREADONLY_on (sv); 3427 SvREADONLY_on (sv);
1854 } 3428 }
1855} 3429}
3430
3431void
3432terminate (...)
3433 CODE:
3434 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3435
3436void
3437schedule (...)
3438 CODE:
3439 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3440
3441void
3442schedule_to (...)
3443 CODE:
3444 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3445
3446void
3447cede_to (...)
3448 CODE:
3449 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3450
3451void
3452cede (...)
3453 CODE:
3454 CORO_EXECUTE_SLF_XS (slf_init_cede);
3455
3456void
3457cede_notself (...)
3458 CODE:
3459 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1856 3460
1857void 3461void
1858_set_current (SV *current) 3462_set_current (SV *current)
1859 PROTOTYPE: $ 3463 PROTOTYPE: $
1860 CODE: 3464 CODE:
1861 SvREFCNT_dec (SvRV (coro_current)); 3465 SvREFCNT_dec (SvRV (coro_current));
1862 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3466 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3467
3468void
3469_set_readyhook (SV *hook)
3470 PROTOTYPE: $
3471 CODE:
3472 SvREFCNT_dec (coro_readyhook);
3473 SvGETMAGIC (hook);
3474 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1863 3475
1864int 3476int
1865prio (Coro::State coro, int newprio = 0) 3477prio (Coro::State coro, int newprio = 0)
3478 PROTOTYPE: $;$
1866 ALIAS: 3479 ALIAS:
1867 nice = 1 3480 nice = 1
1868 CODE: 3481 CODE:
1869{ 3482{
1870 RETVAL = coro->prio; 3483 RETVAL = coro->prio;
… …
1872 if (items > 1) 3485 if (items > 1)
1873 { 3486 {
1874 if (ix) 3487 if (ix)
1875 newprio = coro->prio - newprio; 3488 newprio = coro->prio - newprio;
1876 3489
1877 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3490 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1878 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3491 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1879 3492
1880 coro->prio = newprio; 3493 coro->prio = newprio;
1881 } 3494 }
1882} 3495}
1883 OUTPUT: 3496 OUTPUT:
… …
1885 3498
1886SV * 3499SV *
1887ready (SV *self) 3500ready (SV *self)
1888 PROTOTYPE: $ 3501 PROTOTYPE: $
1889 CODE: 3502 CODE:
1890 RETVAL = boolSV (api_ready (self)); 3503 RETVAL = boolSV (api_ready (aTHX_ self));
1891 OUTPUT: 3504 OUTPUT:
1892 RETVAL 3505 RETVAL
1893 3506
1894int 3507int
1895nready (...) 3508nready (...)
… …
1898 RETVAL = coro_nready; 3511 RETVAL = coro_nready;
1899 OUTPUT: 3512 OUTPUT:
1900 RETVAL 3513 RETVAL
1901 3514
1902void 3515void
1903throw (Coro::State self, SV *throw = &PL_sv_undef) 3516suspend (Coro::State self)
1904 PROTOTYPE: $;$ 3517 PROTOTYPE: $
1905 CODE: 3518 CODE:
1906 SvREFCNT_dec (self->throw); 3519 self->flags |= CF_SUSPENDED;
1907 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1908 3520
1909# for async_pool speedup
1910void 3521void
1911_pool_1 (SV *cb) 3522resume (Coro::State self)
3523 PROTOTYPE: $
1912 CODE: 3524 CODE:
1913{ 3525 self->flags &= ~CF_SUSPENDED;
1914 struct coro *coro = SvSTATE (coro_current);
1915 HV *hv = (HV *)SvRV (coro_current);
1916 AV *defav = GvAV (PL_defgv);
1917 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1918 AV *invoke_av;
1919 int i, len;
1920 3526
1921 if (!invoke) 3527void
1922 croak ("\3async_pool terminate\2\n"); 3528_pool_handler (...)
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1923 3531
1924 SvREFCNT_dec (coro->saved_deffh); 3532void
1925 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3533async_pool (SV *cv, ...)
3534 PROTOTYPE: &@
3535 PPCODE:
3536{
3537 HV *hv = (HV *)av_pop (av_async_pool);
3538 AV *av = newAV ();
3539 SV *cb = ST (0);
3540 int i;
1926 3541
1927 hv_store (hv, "desc", sizeof ("desc") - 1, 3542 av_extend (av, items - 2);
1928 newSVpvn (strpair ("[async_pool]")), 0); 3543 for (i = 1; i < items; ++i)
3544 av_push (av, SvREFCNT_inc_NN (ST (i)));
1929 3545
1930 invoke_av = (AV *)SvRV (invoke); 3546 if ((SV *)hv == &PL_sv_undef)
1931 len = av_len (invoke_av);
1932
1933 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1934
1935 if (len > 0)
1936 { 3547 {
1937 av_fill (defav, len - 1); 3548 PUSHMARK (SP);
1938 for (i = 0; i < len; ++i) 3549 EXTEND (SP, 2);
1939 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3550 PUSHs (sv_Coro);
3551 PUSHs ((SV *)cv_pool_handler);
3552 PUTBACK;
3553 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3554 SPAGAIN;
3555
3556 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1940 } 3557 }
1941 3558
3559 {
3560 struct coro *coro = SvSTATE_hv (hv);
3561
3562 assert (!coro->invoke_cb);
3563 assert (!coro->invoke_av);
3564 coro->invoke_cb = SvREFCNT_inc (cb);
3565 coro->invoke_av = av;
3566 }
3567
3568 api_ready (aTHX_ (SV *)hv);
3569
3570 if (GIMME_V != G_VOID)
3571 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3572 else
1942 SvREFCNT_dec (invoke); 3573 SvREFCNT_dec (hv);
1943} 3574}
1944 3575
1945void 3576SV *
1946_pool_2 (SV *cb) 3577rouse_cb ()
3578 PROTOTYPE:
1947 CODE: 3579 CODE:
1948{ 3580 RETVAL = coro_new_rouse_cb (aTHX);
1949 struct coro *coro = SvSTATE (coro_current);
1950
1951 sv_setsv (cb, &PL_sv_undef);
1952
1953 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1954 coro->saved_deffh = 0;
1955
1956 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1957 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1958 croak ("\3async_pool terminate\2\n");
1959
1960 av_clear (GvAV (PL_defgv));
1961 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1962 newSVpvn (strpair ("[async_pool idle]")), 0);
1963
1964 coro->prio = 0;
1965
1966 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1967 api_trace (coro_current, 0);
1968
1969 av_push (av_async_pool, newSVsv (coro_current));
1970}
1971
1972
1973MODULE = Coro::State PACKAGE = Coro::AIO
1974
1975SV *
1976_get_state ()
1977 CODE:
1978{
1979 struct io_state *data;
1980
1981 RETVAL = newSV (sizeof (struct io_state));
1982 data = (struct io_state *)SvPVX (RETVAL);
1983 SvCUR_set (RETVAL, sizeof (struct io_state));
1984 SvPOK_only (RETVAL);
1985
1986 data->errorno = errno;
1987 data->laststype = PL_laststype;
1988 data->laststatval = PL_laststatval;
1989 data->statcache = PL_statcache;
1990}
1991 OUTPUT: 3581 OUTPUT:
1992 RETVAL 3582 RETVAL
1993 3583
1994void 3584void
1995_set_state (char *data_) 3585rouse_wait (...)
3586 PROTOTYPE: ;$
3587 PPCODE:
3588 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3589
3590void
3591on_enter (SV *block)
3592 ALIAS:
3593 on_leave = 1
1996 PROTOTYPE: $ 3594 PROTOTYPE: &
1997 CODE: 3595 CODE:
1998{ 3596{
1999 struct io_state *data = (void *)data_; 3597 struct coro *coro = SvSTATE_current;
3598 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2000 3599
2001 errno = data->errorno; 3600 block = (SV *)coro_sv_2cv (aTHX_ block);
2002 PL_laststype = data->laststype;
2003 PL_laststatval = data->laststatval;
2004 PL_statcache = data->statcache;
2005}
2006 3601
3602 if (!*avp)
3603 *avp = newAV ();
3604
3605 av_push (*avp, SvREFCNT_inc (block));
3606
3607 if (!ix)
3608 on_enterleave_call (aTHX_ block);
3609
3610 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3611 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3612 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3613}
3614
3615
3616MODULE = Coro::State PACKAGE = PerlIO::cede
3617
3618BOOT:
3619 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3620
3621
3622MODULE = Coro::State PACKAGE = Coro::Semaphore
3623
3624SV *
3625new (SV *klass, SV *count = 0)
3626 CODE:
3627{
3628 int semcnt = 1;
3629
3630 if (count)
3631 {
3632 SvGETMAGIC (count);
3633
3634 if (SvOK (count))
3635 semcnt = SvIV (count);
3636 }
3637
3638 RETVAL = sv_bless (
3639 coro_waitarray_new (aTHX_ semcnt),
3640 GvSTASH (CvGV (cv))
3641 );
3642}
3643 OUTPUT:
3644 RETVAL
3645
3646# helper for Coro::Channel and others
3647SV *
3648_alloc (int count)
3649 CODE:
3650 RETVAL = coro_waitarray_new (aTHX_ count);
3651 OUTPUT:
3652 RETVAL
3653
3654SV *
3655count (SV *self)
3656 CODE:
3657 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3658 OUTPUT:
3659 RETVAL
3660
3661void
3662up (SV *self, int adjust = 1)
3663 ALIAS:
3664 adjust = 1
3665 CODE:
3666 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3667
3668void
3669down (...)
3670 CODE:
3671 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3672
3673void
3674wait (...)
3675 CODE:
3676 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3677
3678void
3679try (SV *self)
3680 PPCODE:
3681{
3682 AV *av = (AV *)SvRV (self);
3683 SV *count_sv = AvARRAY (av)[0];
3684 IV count = SvIVX (count_sv);
3685
3686 if (count > 0)
3687 {
3688 --count;
3689 SvIVX (count_sv) = count;
3690 XSRETURN_YES;
3691 }
3692 else
3693 XSRETURN_NO;
3694}
3695
3696void
3697waiters (SV *self)
3698 PPCODE:
3699{
3700 AV *av = (AV *)SvRV (self);
3701 int wcount = AvFILLp (av) + 1 - 1;
3702
3703 if (GIMME_V == G_SCALAR)
3704 XPUSHs (sv_2mortal (newSViv (wcount)));
3705 else
3706 {
3707 int i;
3708 EXTEND (SP, wcount);
3709 for (i = 1; i <= wcount; ++i)
3710 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3711 }
3712}
3713
3714MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3715
3716void
3717_may_delete (SV *sem, int count, int extra_refs)
3718 PPCODE:
3719{
3720 AV *av = (AV *)SvRV (sem);
3721
3722 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3723 && AvFILLp (av) == 0 /* no waiters, just count */
3724 && SvIV (AvARRAY (av)[0]) == count)
3725 XSRETURN_YES;
3726
3727 XSRETURN_NO;
3728}
3729
3730MODULE = Coro::State PACKAGE = Coro::Signal
3731
3732SV *
3733new (SV *klass)
3734 CODE:
3735 RETVAL = sv_bless (
3736 coro_waitarray_new (aTHX_ 0),
3737 GvSTASH (CvGV (cv))
3738 );
3739 OUTPUT:
3740 RETVAL
3741
3742void
3743wait (...)
3744 CODE:
3745 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3746
3747void
3748broadcast (SV *self)
3749 CODE:
3750{
3751 AV *av = (AV *)SvRV (self);
3752 coro_signal_wake (aTHX_ av, AvFILLp (av));
3753}
3754
3755void
3756send (SV *self)
3757 CODE:
3758{
3759 AV *av = (AV *)SvRV (self);
3760
3761 if (AvFILLp (av))
3762 coro_signal_wake (aTHX_ av, 1);
3763 else
3764 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3765}
3766
3767IV
3768awaited (SV *self)
3769 CODE:
3770 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3771 OUTPUT:
3772 RETVAL
3773
3774
3775MODULE = Coro::State PACKAGE = Coro::AnyEvent
3776
3777BOOT:
3778 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3779
3780void
3781_schedule (...)
3782 CODE:
3783{
3784 static int incede;
3785
3786 api_cede_notself (aTHX);
3787
3788 ++incede;
3789 while (coro_nready >= incede && api_cede (aTHX))
3790 ;
3791
3792 sv_setsv (sv_activity, &PL_sv_undef);
3793 if (coro_nready >= incede)
3794 {
3795 PUSHMARK (SP);
3796 PUTBACK;
3797 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3798 }
3799
3800 --incede;
3801}
3802
3803
3804MODULE = Coro::State PACKAGE = Coro::AIO
3805
3806void
3807_register (char *target, char *proto, SV *req)
3808 CODE:
3809{
3810 CV *req_cv = coro_sv_2cv (aTHX_ req);
3811 /* newXSproto doesn't return the CV on 5.8 */
3812 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3813 sv_setpv ((SV *)slf_cv, proto);
3814 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3815}
3816

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