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Comparing Coro/Coro/State.xs (file contents):
Revision 1.192 by root, Fri Oct 5 21:51:40 2007 UTC vs.
Revision 1.360 by root, Mon Jun 29 06:14:23 2009 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
75/* 5.8.7 */ 110/* 5.8.7 */
76#ifndef SvRV_set 111#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 113#endif
79 114
80/* 5.8.8 */
81#ifndef GV_NOTQUAL
82# define GV_NOTQUAL 0
83#endif
84#ifndef newSV
85# define newSV(l) NEWSV(0,l)
86#endif
87
88#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89# undef CORO_STACKGUARD 116# undef CORO_STACKGUARD
90#endif 117#endif
91 118
92#ifndef CORO_STACKGUARD 119#ifndef CORO_STACKGUARD
… …
98# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
99#endif 126#endif
100 127
101/* 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
102 * 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
103#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
104#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
105 137
106#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
107 139
108#if __GNUC__ >= 3 140#if __GNUC__ >= 3
109# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
110# define BARRIER __asm__ __volatile__ ("" : : : "memory") 142# define expect(expr,value) __builtin_expect ((expr), (value))
143# define INLINE static inline
111#else 144#else
112# define attribute(x) 145# define attribute(x)
113# define BARRIER 146# define expect(expr,value) (expr)
147# define INLINE static
114#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
115 152
116#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
117 154
118#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
119 157
120#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
121static perl_mutex coro_mutex; 159# if CORO_PTHREAD
122# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
123# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
124#else
125# define LOCK (void)0
126# define UNLOCK (void)0
127#endif 161# endif
162#endif
128 163
129/* helper storage struct for Coro::AIO */ 164#ifdef __linux
130struct io_state 165# include <time.h> /* for timespec */
131{ 166# include <syscall.h> /* for SYS_* */
132 int errorno; 167# ifdef SYS_clock_gettime
133 I32 laststype; 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
134 int laststatval; 169# define CORO_CLOCK_MONOTONIC 1
135 Stat_t statcache; 170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
136}; 171# endif
172#endif
137 173
174static double (*nvtime)(); /* so why doesn't it take void? */
175static void (*u2time)(pTHX_ UV ret[2]);
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;
138static size_t coro_stacksize = CORO_STACKSIZE; 182static size_t cctx_stacksize = CORO_STACKSIZE;
139static struct CoroAPI coroapi; 183static struct CoroAPI coroapi;
140static AV *main_mainstack; /* used to differentiate between $main and others */ 184static AV *main_mainstack; /* used to differentiate between $main and others */
141static JMPENV *main_top_env; 185static JMPENV *main_top_env;
142static HV *coro_state_stash, *coro_stash; 186static HV *coro_state_stash, *coro_stash;
143static 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 */
144 192
145static GV *irsgv; /* $/ */ 193static GV *irsgv; /* $/ */
146static GV *stdoutgv; /* *STDOUT */ 194static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook;
196static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */
147 198
148/* async_pool helper stuff */ 199/* async_pool helper stuff */
149static SV *sv_pool_rss; 200static SV *sv_pool_rss;
150static SV *sv_pool_size; 201static SV *sv_pool_size;
202static SV *sv_async_pool_idle; /* description string */
151static 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;
207
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;
152 216
153static struct coro_cctx *cctx_first; 217static struct coro_cctx *cctx_first;
154static int cctx_count, cctx_idle; 218static int cctx_count, cctx_idle;
155 219
156enum { 220enum {
… …
161 CC_TRACE_LINE = 0x10, /* trace each statement */ 225 CC_TRACE_LINE = 0x10, /* trace each statement */
162 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 226 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
163}; 227};
164 228
165/* this is a structure representing a c-level coroutine */ 229/* this is a structure representing a c-level coroutine */
166typedef struct coro_cctx { 230typedef struct coro_cctx
231{
167 struct coro_cctx *next; 232 struct coro_cctx *next;
168 233
169 /* the stack */ 234 /* the stack */
170 void *sptr; 235 void *sptr;
171 size_t ssize; 236 size_t ssize;
… …
174 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 239 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
175 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 */
176 JMPENV *top_env; 241 JMPENV *top_env;
177 coro_context cctx; 242 coro_context cctx;
178 243
244 U32 gen;
179#if CORO_USE_VALGRIND 245#if CORO_USE_VALGRIND
180 int valgrind_id; 246 int valgrind_id;
181#endif 247#endif
182 unsigned char flags; 248 unsigned char flags;
183} coro_cctx; 249} coro_cctx;
250
251coro_cctx *cctx_current; /* the currently running cctx */
252
253/*****************************************************************************/
184 254
185enum { 255enum {
186 CF_RUNNING = 0x0001, /* coroutine is running */ 256 CF_RUNNING = 0x0001, /* coroutine is running */
187 CF_READY = 0x0002, /* coroutine is ready */ 257 CF_READY = 0x0002, /* coroutine is ready */
188 CF_NEW = 0x0004, /* has never been switched to */ 258 CF_NEW = 0x0004, /* has never been switched to */
189 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 */
190}; 261};
191 262
192/* this is a structure representing a perl-level coroutine */ 263/* the structure where most of the perl state is stored, overlaid on the cxstack */
193struct coro { 264typedef struct
194 /* the c coroutine allocated to this perl coroutine, if any */ 265{
195 coro_cctx *cctx; 266 SV *defsv;
196 267 AV *defav;
197 /* data associated with this coroutine (initial args) */ 268 SV *errsv;
198 AV *args; 269 SV *irsgv;
199 int refcnt; 270 HV *hinthv;
200 int flags; /* CF_ flags */
201
202 /* optionally saved, might be zero */
203 AV *defav; /* @_ */
204 SV *defsv; /* $_ */
205 SV *errsv; /* $@ */
206 SV *deffh; /* default filehandle */
207 SV *irssv; /* $/ */
208 SV *irssv_sv; /* real $/ cache */
209
210#define VAR(name,type) type name; 271#define VAR(name,type) type name;
211# include "state.h" 272# include "state.h"
212#undef VAR 273#undef VAR
274} perl_slots;
275
276#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
277
278/* this is a structure representing a perl-level coroutine */
279struct coro {
280 /* the C coroutine allocated to this perl coroutine, if any */
281 coro_cctx *cctx;
282
283 /* ready queue */
284 struct coro *next_ready;
285
286 /* state data */
287 struct CoroSLF slf_frame; /* saved slf frame */
288 AV *mainstack;
289 perl_slots *slot; /* basically the saved sp */
290
291 CV *startcv; /* the CV to execute */
292 AV *args; /* data associated with this coroutine (initial args) */
293 int refcnt; /* coroutines are refcounted, yes */
294 int flags; /* CF_ flags */
295 HV *hv; /* the perl hash associated with this coro, if any */
296 void (*on_destroy)(pTHX_ struct coro *coro);
213 297
214 /* statistics */ 298 /* statistics */
215 int usecount; /* number of transfers to this coro */ 299 int usecount; /* number of transfers to this coro */
216 300
217 /* coro process data */ 301 /* coro process data */
218 int prio; 302 int prio;
219 //SV *throw; 303 SV *except; /* exception to be thrown */
304 SV *rouse_cb;
220 305
221 /* async_pool */ 306 /* async_pool */
222 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;
223 317
224 /* linked list */ 318 /* linked list */
225 struct coro *next, *prev; 319 struct coro *next, *prev;
226 HV *hv; /* the perl hash associated with this coro, if any */
227}; 320};
228 321
229typedef struct coro *Coro__State; 322typedef struct coro *Coro__State;
230typedef struct coro *Coro__State_or_hashref; 323typedef struct coro *Coro__State_or_hashref;
231 324
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
232/** Coro ********************************************************************/ 330/** Coro ********************************************************************/
233 331
234#define PRIO_MAX 3 332#define CORO_PRIO_MAX 3
235#define PRIO_HIGH 1 333#define CORO_PRIO_HIGH 1
236#define PRIO_NORMAL 0 334#define CORO_PRIO_NORMAL 0
237#define PRIO_LOW -1 335#define CORO_PRIO_LOW -1
238#define PRIO_IDLE -3 336#define CORO_PRIO_IDLE -3
239#define PRIO_MIN -4 337#define CORO_PRIO_MIN -4
240 338
241/* for Coro.pm */ 339/* for Coro.pm */
242static SV *coro_current; 340static SV *coro_current;
243static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 341static SV *coro_readyhook;
244static 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;
245static struct coro *coro_first; 344static struct coro *coro_first;
345#define coro_nready coroapi.nready
246 346
247/** lowlevel stuff **********************************************************/ 347/** lowlevel stuff **********************************************************/
248 348
349static SV *
350coro_get_sv (pTHX_ const char *name, int create)
351{
352#if PERL_VERSION_ATLEAST (5,10,0)
353 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
354 get_sv (name, create);
355#endif
356 return get_sv (name, create);
357}
358
249static AV * 359static AV *
360coro_get_av (pTHX_ const char *name, int create)
361{
362#if PERL_VERSION_ATLEAST (5,10,0)
363 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
364 get_av (name, create);
365#endif
366 return get_av (name, create);
367}
368
369static HV *
370coro_get_hv (pTHX_ const char *name, int create)
371{
372#if PERL_VERSION_ATLEAST (5,10,0)
373 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
374 get_hv (name, create);
375#endif
376 return get_hv (name, create);
377}
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
491static AV *
250coro_clone_padlist (pTHX_ CV *cv) 492coro_derive_padlist (pTHX_ CV *cv)
251{ 493{
252 AV *padlist = CvPADLIST (cv); 494 AV *padlist = CvPADLIST (cv);
253 AV *newpadlist, *newpad; 495 AV *newpadlist, *newpad;
254 496
255 newpadlist = newAV (); 497 newpadlist = newAV ();
256 AvREAL_off (newpadlist); 498 AvREAL_off (newpadlist);
257#if PERL_VERSION_ATLEAST (5,9,0) 499#if PERL_VERSION_ATLEAST (5,10,0)
258 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 500 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
259#else 501#else
260 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 502 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
261#endif 503#endif
262 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 504 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
263 --AvFILLp (padlist); 505 --AvFILLp (padlist);
264 506
265 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 507 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
266 av_store (newpadlist, 1, (SV *)newpad); 508 av_store (newpadlist, 1, (SV *)newpad);
267 509
268 return newpadlist; 510 return newpadlist;
269} 511}
270 512
271static void 513static void
272free_padlist (pTHX_ AV *padlist) 514free_padlist (pTHX_ AV *padlist)
273{ 515{
274 /* may be during global destruction */ 516 /* may be during global destruction */
275 if (SvREFCNT (padlist)) 517 if (!IN_DESTRUCT)
276 { 518 {
277 I32 i = AvFILLp (padlist); 519 I32 i = AvFILLp (padlist);
278 while (i >= 0) 520
521 while (i > 0) /* special-case index 0 */
279 { 522 {
280 SV **svp = av_fetch (padlist, i--, FALSE); 523 /* we try to be extra-careful here */
281 if (svp) 524 AV *av = (AV *)AvARRAY (padlist)[i--];
282 { 525 I32 j = AvFILLp (av);
283 SV *sv; 526
284 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 527 while (j >= 0)
528 SvREFCNT_dec (AvARRAY (av)[j--]);
529
530 AvFILLp (av) = -1;
285 SvREFCNT_dec (sv); 531 SvREFCNT_dec (av);
286
287 SvREFCNT_dec (*svp);
288 }
289 } 532 }
290 533
534 SvREFCNT_dec (AvARRAY (padlist)[0]);
535
536 AvFILLp (padlist) = -1;
291 SvREFCNT_dec ((SV*)padlist); 537 SvREFCNT_dec ((SV*)padlist);
292 } 538 }
293} 539}
294 540
295static int 541static int
296coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 542coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
297{ 543{
298 AV *padlist; 544 AV *padlist;
299 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;
300 550
301 /* casting is fun. */ 551 /* casting is fun. */
302 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 552 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
303 free_padlist (aTHX_ padlist); 553 free_padlist (aTHX_ padlist);
304 554
305 SvREFCNT_dec (av); 555 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
306 556
307 return 0; 557 return 0;
308} 558}
309 559
310#define PERL_MAGIC_coro PERL_MAGIC_ext 560static MGVTBL coro_cv_vtbl = {
311 561 0, 0, 0, 0,
312static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 562 coro_cv_free
313 563};
314#define CORO_MAGIC(cv) \
315 SvMAGIC (cv) \
316 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
317 ? SvMAGIC (cv) \
318 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
319 : 0
320
321static struct coro *
322SvSTATE_ (pTHX_ SV *coro)
323{
324 HV *stash;
325 MAGIC *mg;
326
327 if (SvROK (coro))
328 coro = SvRV (coro);
329
330 if (SvTYPE (coro) != SVt_PVHV)
331 croak ("Coro::State object required");
332
333 stash = SvSTASH (coro);
334 if (stash != coro_stash && stash != coro_state_stash)
335 {
336 /* very slow, but rare, check */
337 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
338 croak ("Coro::State object required");
339 }
340
341 mg = CORO_MAGIC (coro);
342 return (struct coro *)mg->mg_ptr;
343}
344
345#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
346 564
347/* the next two functions merely cache the padlists */ 565/* the next two functions merely cache the padlists */
348static void 566static void
349get_padlist (pTHX_ CV *cv) 567get_padlist (pTHX_ CV *cv)
350{ 568{
351 MAGIC *mg = CORO_MAGIC (cv); 569 MAGIC *mg = CORO_MAGIC_cv (cv);
352 AV *av; 570 AV *av;
353 571
354 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 572 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
355 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 573 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
356 else 574 else
357 { 575 {
358#if CORO_PREFER_PERL_FUNCTIONS 576#if CORO_PREFER_PERL_FUNCTIONS
359 /* this is probably cleaner, but also slower? */ 577 /* this is probably cleaner? but also slower! */
578 /* in practise, it seems to be less stable */
360 CV *cp = Perl_cv_clone (cv); 579 CV *cp = Perl_cv_clone (aTHX_ cv);
361 CvPADLIST (cv) = CvPADLIST (cp); 580 CvPADLIST (cv) = CvPADLIST (cp);
362 CvPADLIST (cp) = 0; 581 CvPADLIST (cp) = 0;
363 SvREFCNT_dec (cp); 582 SvREFCNT_dec (cp);
364#else 583#else
365 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 584 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
366#endif 585#endif
367 } 586 }
368} 587}
369 588
370static void 589static void
371put_padlist (pTHX_ CV *cv) 590put_padlist (pTHX_ CV *cv)
372{ 591{
373 MAGIC *mg = CORO_MAGIC (cv); 592 MAGIC *mg = CORO_MAGIC_cv (cv);
374 AV *av; 593 AV *av;
375 594
376 if (!mg) 595 if (expect_false (!mg))
377 { 596 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
378 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
379 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
380 mg->mg_virtual = &vtbl_coro;
381 mg->mg_obj = (SV *)newAV ();
382 }
383 597
384 av = (AV *)mg->mg_obj; 598 av = (AV *)mg->mg_obj;
385 599
386 if (AvFILLp (av) >= AvMAX (av)) 600 if (expect_false (AvFILLp (av) >= AvMAX (av)))
387 av_extend (av, AvMAX (av) + 1); 601 av_extend (av, AvFILLp (av) + 1);
388 602
389 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 603 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
390} 604}
391 605
392/** load & save, init *******************************************************/ 606/** load & save, init *******************************************************/
393 607
394static void 608static void
609on_enterleave_call (pTHX_ SV *cb);
610
611static void
395load_perl (pTHX_ Coro__State c) 612load_perl (pTHX_ Coro__State c)
396{ 613{
614 perl_slots *slot = c->slot;
615 c->slot = 0;
616
617 PL_mainstack = c->mainstack;
618
619 GvSV (PL_defgv) = slot->defsv;
620 GvAV (PL_defgv) = slot->defav;
621 GvSV (PL_errgv) = slot->errsv;
622 GvSV (irsgv) = slot->irsgv;
623 GvHV (PL_hintgv) = slot->hinthv;
624
397#define VAR(name,type) PL_ ## name = c->name; 625 #define VAR(name,type) PL_ ## name = slot->name;
398# include "state.h" 626 # include "state.h"
399#undef VAR 627 #undef VAR
400
401 GvSV (PL_defgv) = c->defsv;
402 GvAV (PL_defgv) = c->defav;
403 GvSV (PL_errgv) = c->errsv;
404 GvSV (irsgv) = c->irssv_sv;
405 628
406 { 629 {
407 dSP; 630 dSP;
631
408 CV *cv; 632 CV *cv;
409 633
410 /* now do the ugly restore mess */ 634 /* now do the ugly restore mess */
411 while ((cv = (CV *)POPs)) 635 while (expect_true (cv = (CV *)POPs))
412 { 636 {
413 put_padlist (aTHX_ cv); /* mark this padlist as available */ 637 put_padlist (aTHX_ cv); /* mark this padlist as available */
414 CvDEPTH (cv) = PTR2IV (POPs); 638 CvDEPTH (cv) = PTR2IV (POPs);
415 CvPADLIST (cv) = (AV *)POPs; 639 CvPADLIST (cv) = (AV *)POPs;
416 } 640 }
417 641
418 PUTBACK; 642 PUTBACK;
419 } 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 }
420} 663}
421 664
422static void 665static void
423save_perl (pTHX_ Coro__State c) 666save_perl (pTHX_ Coro__State c)
424{ 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
425 { 687 {
426 dSP; 688 dSP;
427 I32 cxix = cxstack_ix; 689 I32 cxix = cxstack_ix;
428 PERL_CONTEXT *ccstk = cxstack; 690 PERL_CONTEXT *ccstk = cxstack;
429 PERL_SI *top_si = PL_curstackinfo; 691 PERL_SI *top_si = PL_curstackinfo;
… …
435 697
436 XPUSHs (Nullsv); 698 XPUSHs (Nullsv);
437 /* this loop was inspired by pp_caller */ 699 /* this loop was inspired by pp_caller */
438 for (;;) 700 for (;;)
439 { 701 {
440 while (cxix >= 0) 702 while (expect_true (cxix >= 0))
441 { 703 {
442 PERL_CONTEXT *cx = &ccstk[cxix--]; 704 PERL_CONTEXT *cx = &ccstk[cxix--];
443 705
444 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 706 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
445 { 707 {
446 CV *cv = cx->blk_sub.cv; 708 CV *cv = cx->blk_sub.cv;
447 709
448 if (CvDEPTH (cv)) 710 if (expect_true (CvDEPTH (cv)))
449 { 711 {
450 EXTEND (SP, 3); 712 EXTEND (SP, 3);
451 PUSHs ((SV *)CvPADLIST (cv)); 713 PUSHs ((SV *)CvPADLIST (cv));
452 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 714 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
453 PUSHs ((SV *)cv); 715 PUSHs ((SV *)cv);
454 716
455 CvDEPTH (cv) = 0; 717 CvDEPTH (cv) = 0;
456 get_padlist (aTHX_ cv); 718 get_padlist (aTHX_ cv);
457 } 719 }
458 } 720 }
459 } 721 }
460 722
461 if (top_si->si_type == PERLSI_MAIN) 723 if (expect_true (top_si->si_type == PERLSI_MAIN))
462 break; 724 break;
463 725
464 top_si = top_si->si_prev; 726 top_si = top_si->si_prev;
465 ccstk = top_si->si_cxstack; 727 ccstk = top_si->si_cxstack;
466 cxix = top_si->si_cxix; 728 cxix = top_si->si_cxix;
467 } 729 }
468 730
469 PUTBACK; 731 PUTBACK;
470 } 732 }
471 733
734 /* allocate some space on the context stack for our purposes */
735 /* we manually unroll here, as usually 2 slots is enough */
736 if (SLOT_COUNT >= 1) CXINC;
737 if (SLOT_COUNT >= 2) CXINC;
738 if (SLOT_COUNT >= 3) CXINC;
739 {
740 int i;
741 for (i = 3; i < SLOT_COUNT; ++i)
742 CXINC;
743 }
744 cxstack_ix -= SLOT_COUNT; /* undo allocation */
745
746 c->mainstack = PL_mainstack;
747
748 {
749 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
750
472 c->defav = GvAV (PL_defgv); 751 slot->defav = GvAV (PL_defgv);
473 c->defsv = DEFSV; 752 slot->defsv = DEFSV;
474 c->errsv = ERRSV; 753 slot->errsv = ERRSV;
475 c->irssv_sv = GvSV (irsgv); 754 slot->irsgv = GvSV (irsgv);
755 slot->hinthv = GvHV (PL_hintgv);
476 756
477#define VAR(name,type)c->name = PL_ ## name; 757 #define VAR(name,type) slot->name = PL_ ## name;
478# include "state.h" 758 # include "state.h"
479#undef VAR 759 #undef VAR
760 }
480} 761}
481 762
482/* 763/*
483 * allocate various perl stacks. This is an exact copy 764 * allocate various perl stacks. This is almost an exact copy
484 * of perl.c:init_stacks, except that it uses less memory 765 * of perl.c:init_stacks, except that it uses less memory
485 * on the (sometimes correct) assumption that coroutines do 766 * on the (sometimes correct) assumption that coroutines do
486 * not usually need a lot of stackspace. 767 * not usually need a lot of stackspace.
487 */ 768 */
488#if CORO_PREFER_PERL_FUNCTIONS 769#if CORO_PREFER_PERL_FUNCTIONS
489# define coro_init_stacks init_stacks 770# define coro_init_stacks(thx) init_stacks ()
490#else 771#else
491static void 772static void
492coro_init_stacks (pTHX) 773coro_init_stacks (pTHX)
493{ 774{
494 PL_curstackinfo = new_stackinfo(64, 6); 775 PL_curstackinfo = new_stackinfo(32, 8);
495 PL_curstackinfo->si_type = PERLSI_MAIN; 776 PL_curstackinfo->si_type = PERLSI_MAIN;
496 PL_curstack = PL_curstackinfo->si_stack; 777 PL_curstack = PL_curstackinfo->si_stack;
497 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 778 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
498 779
499 PL_stack_base = AvARRAY(PL_curstack); 780 PL_stack_base = AvARRAY(PL_curstack);
500 PL_stack_sp = PL_stack_base; 781 PL_stack_sp = PL_stack_base;
501 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 782 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
502 783
503 New(50,PL_tmps_stack,64,SV*); 784 New(50,PL_tmps_stack,32,SV*);
504 PL_tmps_floor = -1; 785 PL_tmps_floor = -1;
505 PL_tmps_ix = -1; 786 PL_tmps_ix = -1;
506 PL_tmps_max = 64; 787 PL_tmps_max = 32;
507 788
508 New(54,PL_markstack,16,I32); 789 New(54,PL_markstack,16,I32);
509 PL_markstack_ptr = PL_markstack; 790 PL_markstack_ptr = PL_markstack;
510 PL_markstack_max = PL_markstack + 16; 791 PL_markstack_max = PL_markstack + 16;
511 792
512#ifdef SET_MARK_OFFSET 793#ifdef SET_MARK_OFFSET
513 SET_MARK_OFFSET; 794 SET_MARK_OFFSET;
514#endif 795#endif
515 796
516 New(54,PL_scopestack,16,I32); 797 New(54,PL_scopestack,8,I32);
517 PL_scopestack_ix = 0; 798 PL_scopestack_ix = 0;
518 PL_scopestack_max = 16; 799 PL_scopestack_max = 8;
519 800
520 New(54,PL_savestack,64,ANY); 801 New(54,PL_savestack,24,ANY);
521 PL_savestack_ix = 0; 802 PL_savestack_ix = 0;
522 PL_savestack_max = 64; 803 PL_savestack_max = 24;
523 804
524#if !PERL_VERSION_ATLEAST (5,9,0) 805#if !PERL_VERSION_ATLEAST (5,10,0)
525 New(54,PL_retstack,4,OP*); 806 New(54,PL_retstack,4,OP*);
526 PL_retstack_ix = 0; 807 PL_retstack_ix = 0;
527 PL_retstack_max = 4; 808 PL_retstack_max = 4;
528#endif 809#endif
529} 810}
… …
531 812
532/* 813/*
533 * destroy the stacks, the callchain etc... 814 * destroy the stacks, the callchain etc...
534 */ 815 */
535static void 816static void
536coro_destroy_stacks (pTHX) 817coro_destruct_stacks (pTHX)
537{ 818{
538 while (PL_curstackinfo->si_next) 819 while (PL_curstackinfo->si_next)
539 PL_curstackinfo = PL_curstackinfo->si_next; 820 PL_curstackinfo = PL_curstackinfo->si_next;
540 821
541 while (PL_curstackinfo) 822 while (PL_curstackinfo)
… …
552 833
553 Safefree (PL_tmps_stack); 834 Safefree (PL_tmps_stack);
554 Safefree (PL_markstack); 835 Safefree (PL_markstack);
555 Safefree (PL_scopestack); 836 Safefree (PL_scopestack);
556 Safefree (PL_savestack); 837 Safefree (PL_savestack);
557#if !PERL_VERSION_ATLEAST (5,9,0) 838#if !PERL_VERSION_ATLEAST (5,10,0)
558 Safefree (PL_retstack); 839 Safefree (PL_retstack);
559#endif 840#endif
560} 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);
561 851
562static size_t 852static size_t
563coro_rss (pTHX_ struct coro *coro) 853coro_rss (pTHX_ struct coro *coro)
564{ 854{
565 size_t rss = sizeof (*coro); 855 size_t rss = sizeof (*coro);
566 856
567 if (coro->mainstack) 857 if (coro->mainstack)
568 { 858 {
569 if (coro->flags & CF_RUNNING) 859 if (coro->flags & CF_RUNNING)
570 { 860 {
571 #define VAR(name,type)coro->name = PL_ ## name; 861 #define SYM(sym) PL_ ## sym
572 # include "state.h" 862 CORO_RSS;
573 #undef VAR 863 #undef SYM
574 } 864 }
575 865 else
576 rss += sizeof (coro->curstackinfo); 866 {
577 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 867 #define SYM(sym) coro->slot->sym
578 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 868 CORO_RSS;
579 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 869 #undef SYM
580 rss += coro->tmps_max * sizeof (SV *); 870 }
581 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
582 rss += coro->scopestack_max * sizeof (I32);
583 rss += coro->savestack_max * sizeof (ANY);
584
585#if !PERL_VERSION_ATLEAST (5,9,0)
586 rss += coro->retstack_max * sizeof (OP *);
587#endif
588 } 871 }
589 872
590 return rss; 873 return rss;
591} 874}
592 875
593/** coroutine stack handling ************************************************/ 876/** coroutine stack handling ************************************************/
594 877
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 */
595static 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 */
596coro_setup (pTHX_ struct coro *coro) 987coro_setup (pTHX_ struct coro *coro)
597{ 988{
598 /* 989 /*
599 * emulate part of the perl startup here. 990 * emulate part of the perl startup here.
600 */ 991 */
… …
602 993
603 PL_runops = RUNOPS_DEFAULT; 994 PL_runops = RUNOPS_DEFAULT;
604 PL_curcop = &PL_compiling; 995 PL_curcop = &PL_compiling;
605 PL_in_eval = EVAL_NULL; 996 PL_in_eval = EVAL_NULL;
606 PL_comppad = 0; 997 PL_comppad = 0;
998 PL_comppad_name = 0;
999 PL_comppad_name_fill = 0;
1000 PL_comppad_name_floor = 0;
607 PL_curpm = 0; 1001 PL_curpm = 0;
1002 PL_curpad = 0;
608 PL_localizing = 0; 1003 PL_localizing = 0;
609 PL_dirty = 0; 1004 PL_dirty = 0;
610 PL_restartop = 0; 1005 PL_restartop = 0;
1006#if PERL_VERSION_ATLEAST (5,10,0)
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);
611 1014
612 GvSV (PL_defgv) = newSV (0); 1015 GvSV (PL_defgv) = newSV (0);
613 GvAV (PL_defgv) = coro->args; coro->args = 0; 1016 GvAV (PL_defgv) = coro->args; coro->args = 0;
614 GvSV (PL_errgv) = newSV (0); 1017 GvSV (PL_errgv) = newSV (0);
615 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;
616 PL_rs = newSVsv (GvSV (irsgv)); 1020 PL_rs = newSVsv (GvSV (irsgv));
617 PL_defoutgv = SvREFCNT_inc (stdoutgv); 1021 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
618
619 ENTER; /* necessary e.g. for dounwind */
620 1022
621 { 1023 {
622 dSP; 1024 dSP;
623 LOGOP myop; 1025 UNOP myop;
624 1026
625 Zero (&myop, 1, LOGOP); 1027 Zero (&myop, 1, UNOP);
626 myop.op_next = Nullop; 1028 myop.op_next = Nullop;
1029 myop.op_type = OP_ENTERSUB;
627 myop.op_flags = OPf_WANT_VOID; 1030 myop.op_flags = OPf_WANT_VOID;
628 1031
629 PUSHMARK (SP); 1032 PUSHMARK (SP);
630 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1033 PUSHs ((SV *)coro->startcv);
631 PUTBACK; 1034 PUTBACK;
632 PL_op = (OP *)&myop; 1035 PL_op = (OP *)&myop;
633 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
634 SPAGAIN;
635 } 1037 }
636}
637 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
638static void 1063static void
639coro_destroy (pTHX_ struct coro *coro) 1064coro_unwind_stacks (pTHX)
640{ 1065{
641 if (!IN_DESTRUCT) 1066 if (!IN_DESTRUCT)
642 { 1067 {
643 /* restore all saved variables and stuff */ 1068 /* restore all saved variables and stuff */
644 LEAVE_SCOPE (0); 1069 LEAVE_SCOPE (0);
… …
652 POPSTACK_TO (PL_mainstack); 1077 POPSTACK_TO (PL_mainstack);
653 1078
654 /* unwind main stack */ 1079 /* unwind main stack */
655 dounwind (-1); 1080 dounwind (-1);
656 } 1081 }
1082}
657 1083
658 SvREFCNT_dec (GvSV (PL_defgv)); 1084static void
659 SvREFCNT_dec (GvAV (PL_defgv)); 1085coro_destruct_perl (pTHX_ struct coro *coro)
660 SvREFCNT_dec (GvSV (PL_errgv)); 1086{
661 SvREFCNT_dec (PL_defoutgv); 1087 SV *svf [9];
662 SvREFCNT_dec (PL_rs);
663 SvREFCNT_dec (GvSV (irsgv));
664 1088
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
665 SvREFCNT_dec (coro->saved_deffh); 1121 SvREFCNT_dec (coro->saved_deffh);
666 //SvREFCNT_dec (coro->throw); 1122 SvREFCNT_dec (coro->rouse_cb);
667 1123 SvREFCNT_dec (coro->invoke_cb);
668 coro_destroy_stacks (aTHX); 1124 SvREFCNT_dec (coro->invoke_av);
1125 }
669} 1126}
670 1127
671static void 1128INLINE void
672free_coro_mortal (pTHX) 1129free_coro_mortal (pTHX)
673{ 1130{
674 if (coro_mortal) 1131 if (expect_true (coro_mortal))
675 { 1132 {
676 SvREFCNT_dec (coro_mortal); 1133 SvREFCNT_dec (coro_mortal);
677 coro_mortal = 0; 1134 coro_mortal = 0;
678 } 1135 }
679} 1136}
… …
681static int 1138static int
682runops_trace (pTHX) 1139runops_trace (pTHX)
683{ 1140{
684 COP *oldcop = 0; 1141 COP *oldcop = 0;
685 int oldcxix = -2; 1142 int oldcxix = -2;
686 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
687 coro_cctx *cctx = coro->cctx;
688 1143
689 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1144 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
690 { 1145 {
691 PERL_ASYNC_CHECK (); 1146 PERL_ASYNC_CHECK ();
692 1147
693 if (cctx->flags & CC_TRACE_ALL) 1148 if (cctx_current->flags & CC_TRACE_ALL)
694 { 1149 {
695 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)
696 { 1151 {
697 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1152 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
698 SV **bot, **top; 1153 SV **bot, **top;
699 AV *av = newAV (); /* return values */ 1154 AV *av = newAV (); /* return values */
700 SV **cb; 1155 SV **cb;
… …
708 bot = PL_stack_base + cx->blk_oldsp + 1; 1163 bot = PL_stack_base + cx->blk_oldsp + 1;
709 top = cx->blk_gimme == G_ARRAY ? SP + 1 1164 top = cx->blk_gimme == G_ARRAY ? SP + 1
710 : cx->blk_gimme == G_SCALAR ? bot + 1 1165 : cx->blk_gimme == G_SCALAR ? bot + 1
711 : bot; 1166 : bot;
712 1167
1168 av_extend (av, top - bot);
713 while (bot < top) 1169 while (bot < top)
714 av_push (av, SvREFCNT_inc (*bot++)); 1170 av_push (av, SvREFCNT_inc_NN (*bot++));
715 1171
716 PL_runops = RUNOPS_DEFAULT; 1172 PL_runops = RUNOPS_DEFAULT;
717 ENTER; 1173 ENTER;
718 SAVETMPS; 1174 SAVETMPS;
719 EXTEND (SP, 3); 1175 EXTEND (SP, 3);
… …
736 1192
737 if (PL_curcop != &PL_compiling) 1193 if (PL_curcop != &PL_compiling)
738 { 1194 {
739 SV **cb; 1195 SV **cb;
740 1196
741 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1197 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
742 { 1198 {
743 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1199 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
744 1200
745 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1201 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
746 { 1202 {
747 runops_proc_t old_runops = PL_runops;
748 dSP; 1203 dSP;
749 GV *gv = CvGV (cx->blk_sub.cv); 1204 GV *gv = CvGV (cx->blk_sub.cv);
750 SV *fullname = sv_2mortal (newSV (0)); 1205 SV *fullname = sv_2mortal (newSV (0));
751 1206
752 if (isGV (gv)) 1207 if (isGV (gv))
… …
757 SAVETMPS; 1212 SAVETMPS;
758 EXTEND (SP, 3); 1213 EXTEND (SP, 3);
759 PUSHMARK (SP); 1214 PUSHMARK (SP);
760 PUSHs (&PL_sv_yes); 1215 PUSHs (&PL_sv_yes);
761 PUSHs (fullname); 1216 PUSHs (fullname);
762 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);
763 PUTBACK; 1218 PUTBACK;
764 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1219 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
765 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);
766 SPAGAIN; 1221 SPAGAIN;
767 FREETMPS; 1222 FREETMPS;
… …
770 } 1225 }
771 1226
772 oldcxix = cxstack_ix; 1227 oldcxix = cxstack_ix;
773 } 1228 }
774 1229
775 if (cctx->flags & CC_TRACE_LINE) 1230 if (cctx_current->flags & CC_TRACE_LINE)
776 { 1231 {
777 dSP; 1232 dSP;
778 1233
779 PL_runops = RUNOPS_DEFAULT; 1234 PL_runops = RUNOPS_DEFAULT;
780 ENTER; 1235 ENTER;
… …
799 1254
800 TAINT_NOT; 1255 TAINT_NOT;
801 return 0; 1256 return 0;
802} 1257}
803 1258
804/* inject a fake call to Coro::State::_cctx_init into the execution */ 1259static struct CoroSLF cctx_ssl_frame;
805/* _cctx_init should be careful, as it could be called at almost any time */ 1260
806/* 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 */
807static void NOINLINE 1276static void NOINLINE
808prepare_cctx (pTHX_ coro_cctx *cctx) 1277cctx_prepare (pTHX)
809{ 1278{
810 dSP;
811 LOGOP myop;
812
813 PL_top_env = &PL_start_env; 1279 PL_top_env = &PL_start_env;
814 1280
815 if (cctx->flags & CC_TRACE) 1281 if (cctx_current->flags & CC_TRACE)
816 PL_runops = runops_trace; 1282 PL_runops = runops_trace;
817 1283
818 Zero (&myop, 1, LOGOP); 1284 /* we already must be executing an SLF op, there is no other valid way
819 myop.op_next = PL_op; 1285 * that can lead to creation of a new cctx */
820 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));
821 1288
822 PUSHMARK (SP); 1289 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
823 EXTEND (SP, 2); 1290 cctx_ssl_frame = slf_frame;
824 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1291
825 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1292 slf_frame.prepare = slf_prepare_set_stacklevel;
826 PUTBACK; 1293 slf_frame.check = slf_check_set_stacklevel;
827 PL_op = (OP *)&myop; 1294}
828 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1295
829 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);
830} 1301}
831 1302
832/* 1303/*
833 * this is a _very_ stripped down perl interpreter ;) 1304 * this is a _very_ stripped down perl interpreter ;)
834 */ 1305 */
835static void 1306static void
836coro_run (void *arg) 1307cctx_run (void *arg)
837{ 1308{
1309#ifdef USE_ITHREADS
1310# if CORO_PTHREAD
1311 PERL_SET_CONTEXT (coro_thx);
1312# endif
1313#endif
1314 {
838 dTHX; 1315 dTHX;
839 1316
840 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1317 /* normally we would need to skip the entersub here */
841 UNLOCK; 1318 /* not doing so will re-execute it, which is exactly what we want */
842
843 /* we now skip the entersub that lead to transfer() */
844 PL_op = PL_op->op_next; 1319 /* PL_nop = PL_nop->op_next */
845 1320
846 /* inject a fake subroutine call to cctx_init */ 1321 /* inject a fake subroutine call to cctx_init */
847 prepare_cctx (aTHX_ (coro_cctx *)arg); 1322 cctx_prepare (aTHX);
848 1323
1324 /* cctx_run is the alternative tail of transfer() */
1325 transfer_tail (aTHX);
1326
849 /* 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 */
850 PL_restartop = PL_op; 1328 PL_restartop = PL_op;
851 perl_run (PL_curinterp); 1329 perl_run (PL_curinterp);
852
853 /* 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 /*
854 * 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
855 * 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)
856 * 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
857 * bootstrap-time "top" top_env, as we cannot restore the "main" 1339 * bootstrap-time "top" top_env, as we cannot restore the "main"
858 * 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.
859 */ 1343 */
860 PL_top_env = main_top_env; 1344 PL_top_env = main_top_env;
861 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 }
862} 1347}
863 1348
864static coro_cctx * 1349static coro_cctx *
865cctx_new () 1350cctx_new ()
866{ 1351{
867 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 ();
868 void *stack_start; 1381 void *stack_start;
869 size_t stack_size; 1382 size_t stack_size;
870 1383
871 ++cctx_count;
872
873 Newz (0, cctx, 1, coro_cctx);
874
875#if HAVE_MMAP 1384#if HAVE_MMAP
876
877 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;
878 /* mmap supposedly does allocate-on-write for us */ 1386 /* mmap supposedly does allocate-on-write for us */
879 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);
880 1388
881 if (cctx->sptr != (void *)-1) 1389 if (cctx->sptr != (void *)-1)
882 { 1390 {
883# if CORO_STACKGUARD 1391 #if CORO_STACKGUARD
884 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1392 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
885# endif 1393 #endif
886 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1394 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
887 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1395 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
888 cctx->flags |= CC_MAPPED; 1396 cctx->flags |= CC_MAPPED;
889 } 1397 }
890 else 1398 else
891#endif 1399#endif
892 { 1400 {
893 cctx->ssize = coro_stacksize * (long)sizeof (long); 1401 cctx->ssize = cctx_stacksize * (long)sizeof (long);
894 New (0, cctx->sptr, coro_stacksize, long); 1402 New (0, cctx->sptr, cctx_stacksize, long);
895 1403
896 if (!cctx->sptr) 1404 if (!cctx->sptr)
897 { 1405 {
898 perror ("FATAL: unable to allocate stack for coroutine"); 1406 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
899 _exit (EXIT_FAILURE); 1407 _exit (EXIT_FAILURE);
900 } 1408 }
901 1409
902 stack_start = cctx->sptr; 1410 stack_start = cctx->sptr;
903 stack_size = cctx->ssize; 1411 stack_size = cctx->ssize;
904 } 1412 }
905 1413
906 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
907 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1418 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
908 1419
909 return cctx; 1420 return cctx;
910} 1421}
911 1422
912static void 1423static void
913cctx_destroy (coro_cctx *cctx) 1424cctx_destroy (coro_cctx *cctx)
914{ 1425{
915 if (!cctx) 1426 if (!cctx)
916 return; 1427 return;
917 1428
1429 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1430
918 --cctx_count; 1431 --cctx_count;
1432 coro_destroy (&cctx->cctx);
919 1433
1434 /* coro_transfer creates new, empty cctx's */
1435 if (cctx->sptr)
1436 {
920#if CORO_USE_VALGRIND 1437 #if CORO_USE_VALGRIND
921 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1438 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
922#endif 1439 #endif
923 1440
924#if HAVE_MMAP 1441#if HAVE_MMAP
925 if (cctx->flags & CC_MAPPED) 1442 if (cctx->flags & CC_MAPPED)
926 munmap (cctx->sptr, cctx->ssize); 1443 munmap (cctx->sptr, cctx->ssize);
927 else 1444 else
928#endif 1445#endif
929 Safefree (cctx->sptr); 1446 Safefree (cctx->sptr);
1447 }
930 1448
931 Safefree (cctx); 1449 Safefree (cctx);
932} 1450}
1451
1452/* wether this cctx should be destructed */
1453#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
933 1454
934static coro_cctx * 1455static coro_cctx *
935cctx_get (pTHX) 1456cctx_get (pTHX)
936{ 1457{
937 while (cctx_first) 1458 while (expect_true (cctx_first))
938 { 1459 {
939 coro_cctx *cctx = cctx_first; 1460 coro_cctx *cctx = cctx_first;
940 cctx_first = cctx->next; 1461 cctx_first = cctx->next;
941 --cctx_idle; 1462 --cctx_idle;
942 1463
943 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1464 if (expect_true (!CCTX_EXPIRED (cctx)))
944 return cctx; 1465 return cctx;
945 1466
946 cctx_destroy (cctx); 1467 cctx_destroy (cctx);
947 } 1468 }
948 1469
949 return cctx_new (); 1470 return cctx_new_run ();
950} 1471}
951 1472
952static void 1473static void
953cctx_put (coro_cctx *cctx) 1474cctx_put (coro_cctx *cctx)
954{ 1475{
1476 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1477
955 /* free another cctx if overlimit */ 1478 /* free another cctx if overlimit */
956 if (cctx_idle >= MAX_IDLE_CCTX) 1479 if (expect_false (cctx_idle >= cctx_max_idle))
957 { 1480 {
958 coro_cctx *first = cctx_first; 1481 coro_cctx *first = cctx_first;
959 cctx_first = first->next; 1482 cctx_first = first->next;
960 --cctx_idle; 1483 --cctx_idle;
961 1484
… …
967 cctx_first = cctx; 1490 cctx_first = cctx;
968} 1491}
969 1492
970/** coroutine switching *****************************************************/ 1493/** coroutine switching *****************************************************/
971 1494
972static void NOINLINE 1495static void
973transfer_check (pTHX_ struct coro *prev, struct coro *next) 1496transfer_check (pTHX_ struct coro *prev, struct coro *next)
974{ 1497{
975 if (prev != next) 1498 /* TODO: throwing up here is considered harmful */
1499
1500 if (expect_true (prev != next))
976 { 1501 {
977 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1502 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
978 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,");
979 1504
980 if (next->flags & CF_RUNNING) 1505 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
981 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
982
983 if (next->flags & CF_DESTROYED)
984 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,");
985 1507
1508#if !PERL_VERSION_ATLEAST (5,10,0)
986 if (PL_lex_state != LEX_NOTPARSING) 1509 if (expect_false (PL_lex_state != LEX_NOTPARSING))
987 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
988 } 1512 }
989} 1513}
990 1514
991/* always use the TRANSFER macro */ 1515/* always use the TRANSFER macro */
992static void NOINLINE 1516static void NOINLINE /* noinline so we have a fixed stackframe */
993transfer (pTHX_ struct coro *prev, struct coro *next) 1517transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
994{ 1518{
995 dSTACKLEVEL; 1519 dSTACKLEVEL;
996 1520
997 /* sometimes transfer is only called to set idle_sp */ 1521 /* sometimes transfer is only called to set idle_sp */
998 if (!next) 1522 if (expect_false (!prev))
999 { 1523 {
1000 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1524 cctx_current->idle_sp = STACKLEVEL;
1001 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 */
1002 }
1003 else if (prev != next)
1004 { 1526 }
1527 else if (expect_true (prev != next))
1528 {
1005 coro_cctx *prev__cctx; 1529 coro_cctx *cctx_prev;
1006 1530
1007 if (prev->flags & CF_NEW) 1531 if (expect_false (prev->flags & CF_NEW))
1008 { 1532 {
1009 /* create a new empty context */ 1533 /* create a new empty/source context */
1010 Newz (0, prev->cctx, 1, coro_cctx);
1011 prev->flags &= ~CF_NEW; 1534 prev->flags &= ~CF_NEW;
1012 prev->flags |= CF_RUNNING; 1535 prev->flags |= CF_RUNNING;
1013 } 1536 }
1014 1537
1015 prev->flags &= ~CF_RUNNING; 1538 prev->flags &= ~CF_RUNNING;
1016 next->flags |= CF_RUNNING; 1539 next->flags |= CF_RUNNING;
1017 1540
1018 LOCK; 1541 /* first get rid of the old state */
1542 save_perl (aTHX_ prev);
1019 1543
1020 if (next->flags & CF_NEW) 1544 if (expect_false (next->flags & CF_NEW))
1021 { 1545 {
1022 /* need to start coroutine */ 1546 /* need to start coroutine */
1023 next->flags &= ~CF_NEW; 1547 next->flags &= ~CF_NEW;
1024 /* first get rid of the old state */
1025 save_perl (aTHX_ prev);
1026 /* setup coroutine call */ 1548 /* setup coroutine call */
1027 coro_setup (aTHX_ next); 1549 coro_setup (aTHX_ next);
1028 } 1550 }
1029 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 ))
1030 { 1560 {
1031 /* coroutine already started */ 1561 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1032 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));
1033 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);
1034 } 1571 }
1572 else
1573 prev->cctx = cctx_current;
1035 1574
1036 prev__cctx = prev->cctx; 1575 ++next->usecount;
1037 1576
1038 /* possibly "free" the cctx */ 1577 cctx_prev = cctx_current;
1039 if (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))
1040 { 1583 {
1041 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1584 cctx_prev->top_env = PL_top_env;
1042 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;
1043 1586 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1044 prev->cctx = 0;
1045
1046 cctx_put (prev__cctx);
1047 } 1587 }
1048 1588
1049 ++next->usecount; 1589 transfer_tail (aTHX);
1050
1051 if (!next->cctx)
1052 next->cctx = cctx_get (aTHX);
1053
1054 if (prev__cctx != next->cctx)
1055 {
1056 prev__cctx->top_env = PL_top_env;
1057 PL_top_env = next->cctx->top_env;
1058 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1059 }
1060
1061 free_coro_mortal (aTHX);
1062 UNLOCK;
1063 } 1590 }
1064} 1591}
1065 1592
1066struct transfer_args
1067{
1068 struct coro *prev, *next;
1069};
1070
1071#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1593#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1072#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1594#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1073 1595
1074/** high level stuff ********************************************************/ 1596/** high level stuff ********************************************************/
1075 1597
1076static int 1598static int
1077coro_state_destroy (pTHX_ struct coro *coro) 1599coro_state_destroy (pTHX_ struct coro *coro)
1078{ 1600{
1079 if (coro->flags & CF_DESTROYED) 1601 if (coro->flags & CF_DESTROYED)
1080 return 0; 1602 return 0;
1603
1604 if (coro->on_destroy && !PL_dirty)
1605 coro->on_destroy (aTHX_ coro);
1081 1606
1082 coro->flags |= CF_DESTROYED; 1607 coro->flags |= CF_DESTROYED;
1083 1608
1084 if (coro->flags & CF_READY) 1609 if (coro->flags & CF_READY)
1085 { 1610 {
1086 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1611 /* reduce nready, as destroying a ready coro effectively unreadies it */
1087 /* alternative: look through all ready queues and remove the coro */ 1612 /* alternative: look through all ready queues and remove the coro */
1088 LOCK;
1089 --coro_nready; 1613 --coro_nready;
1090 UNLOCK;
1091 } 1614 }
1092 else 1615 else
1093 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 */
1094 1617
1095 if (coro->mainstack && coro->mainstack != main_mainstack) 1618 if (coro->mainstack
1096 { 1619 && coro->mainstack != main_mainstack
1097 struct coro temp; 1620 && coro->slot
1098 1621 && !PL_dirty)
1099 if (coro->flags & CF_RUNNING)
1100 croak ("FATAL: tried to destroy currently running coroutine");
1101
1102 save_perl (aTHX_ &temp);
1103 load_perl (aTHX_ coro);
1104
1105 coro_destroy (aTHX_ coro); 1622 coro_destruct_perl (aTHX_ coro);
1106
1107 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
1108
1109 coro->mainstack = 0;
1110 }
1111 1623
1112 cctx_destroy (coro->cctx); 1624 cctx_destroy (coro->cctx);
1625 SvREFCNT_dec (coro->startcv);
1113 SvREFCNT_dec (coro->args); 1626 SvREFCNT_dec (coro->args);
1627 SvREFCNT_dec (CORO_THROW);
1114 1628
1115 if (coro->next) coro->next->prev = coro->prev; 1629 if (coro->next) coro->next->prev = coro->prev;
1116 if (coro->prev) coro->prev->next = coro->next; 1630 if (coro->prev) coro->prev->next = coro->next;
1117 if (coro == coro_first) coro_first = coro->next; 1631 if (coro == coro_first) coro_first = coro->next;
1118 1632
… …
1156# define MGf_DUP 0 1670# define MGf_DUP 0
1157#endif 1671#endif
1158}; 1672};
1159 1673
1160static void 1674static void
1161prepare_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)
1162{ 1676{
1163 ta->prev = SvSTATE (prev_sv); 1677 ta->prev = SvSTATE (prev_sv);
1164 ta->next = SvSTATE (next_sv); 1678 ta->next = SvSTATE (next_sv);
1165 TRANSFER_CHECK (*ta); 1679 TRANSFER_CHECK (*ta);
1166} 1680}
1167 1681
1168static void 1682static void
1169api_transfer (SV *prev_sv, SV *next_sv) 1683api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1170{ 1684{
1171 dTHX;
1172 struct transfer_args ta; 1685 struct coro_transfer_args ta;
1173 1686
1174 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1687 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1175 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);
1176} 1712}
1177 1713
1178/** Coro ********************************************************************/ 1714/** Coro ********************************************************************/
1179 1715
1180static void 1716INLINE void
1181coro_enq (pTHX_ SV *coro_sv) 1717coro_enq (pTHX_ struct coro *coro)
1182{ 1718{
1183 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1719 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1184}
1185 1720
1186static SV * 1721 SvREFCNT_inc_NN (coro->hv);
1187coro_deq (pTHX_ int min_prio)
1188{
1189 int prio = PRIO_MAX - PRIO_MIN;
1190 1722
1191 min_prio -= PRIO_MIN; 1723 coro->next_ready = 0;
1192 if (min_prio < 0) 1724 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1193 min_prio = 0; 1725 ready [1] = coro;
1726}
1194 1727
1728INLINE struct coro *
1729coro_deq (pTHX)
1730{
1731 int prio;
1732
1195 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1733 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1196 if (AvFILLp (coro_ready [prio]) >= 0) 1734 {
1197 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 }
1198 1744
1199 return 0; 1745 return 0;
1200} 1746}
1201 1747
1202static int 1748static int
1203api_ready (SV *coro_sv) 1749api_ready (pTHX_ SV *coro_sv)
1204{ 1750{
1205 dTHX;
1206 struct coro *coro; 1751 struct coro *coro;
1207 1752 SV *sv_hook;
1208 if (SvROK (coro_sv)) 1753 void (*xs_hook)(void);
1209 coro_sv = SvRV (coro_sv);
1210 1754
1211 coro = SvSTATE (coro_sv); 1755 coro = SvSTATE (coro_sv);
1212 1756
1213 if (coro->flags & CF_READY) 1757 if (coro->flags & CF_READY)
1214 return 0; 1758 return 0;
1215 1759
1216 coro->flags |= CF_READY; 1760 coro->flags |= CF_READY;
1217 1761
1218 LOCK; 1762 sv_hook = coro_nready ? 0 : coro_readyhook;
1219 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1763 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1764
1765 coro_enq (aTHX_ coro);
1220 ++coro_nready; 1766 ++coro_nready;
1221 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 ();
1222 1785
1223 return 1; 1786 return 1;
1224} 1787}
1225 1788
1226static int 1789static int
1227api_is_ready (SV *coro_sv) 1790api_is_ready (pTHX_ SV *coro_sv)
1228{ 1791{
1229 dTHX;
1230 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1792 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1231} 1793}
1232 1794
1233static void 1795/* expects to own a reference to next->hv */
1796INLINE void
1234prepare_schedule (pTHX_ struct transfer_args *ta) 1797prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1235{ 1798{
1236 SV *prev_sv, *next_sv;
1237
1238 for (;;)
1239 {
1240 LOCK;
1241 next_sv = coro_deq (aTHX_ PRIO_MIN);
1242
1243 /* nothing to schedule: call the idle handler */
1244 if (!next_sv)
1245 {
1246 dSP;
1247 UNLOCK;
1248
1249 ENTER;
1250 SAVETMPS;
1251
1252 PUSHMARK (SP);
1253 PUTBACK;
1254 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1255
1256 FREETMPS;
1257 LEAVE;
1258 continue;
1259 }
1260
1261 ta->next = SvSTATE (next_sv);
1262
1263 /* cannot transfer to destroyed coros, skip and look for next */
1264 if (ta->next->flags & CF_DESTROYED)
1265 {
1266 UNLOCK;
1267 SvREFCNT_dec (next_sv);
1268 /* coro_nready is already taken care of by destroy */
1269 continue;
1270 }
1271
1272 --coro_nready;
1273 UNLOCK;
1274 break;
1275 }
1276
1277 /* free this only after the transfer */
1278 prev_sv = SvRV (coro_current); 1799 SV *prev_sv = SvRV (coro_current);
1800
1279 ta->prev = SvSTATE (prev_sv); 1801 ta->prev = SvSTATE_hv (prev_sv);
1802 ta->next = next;
1803
1280 TRANSFER_CHECK (*ta); 1804 TRANSFER_CHECK (*ta);
1281 assert (ta->next->flags & CF_READY); 1805
1282 ta->next->flags &= ~CF_READY;
1283 SvRV_set (coro_current, next_sv); 1806 SvRV_set (coro_current, (SV *)next->hv);
1284 1807
1285 LOCK;
1286 free_coro_mortal (aTHX); 1808 free_coro_mortal (aTHX);
1287 coro_mortal = prev_sv; 1809 coro_mortal = prev_sv;
1288 UNLOCK;
1289} 1810}
1290 1811
1291static 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
1292prepare_cede (pTHX_ struct transfer_args *ta) 1862prepare_cede (pTHX_ struct coro_transfer_args *ta)
1293{ 1863{
1294 api_ready (coro_current); 1864 api_ready (aTHX_ coro_current);
1295 prepare_schedule (aTHX_ ta); 1865 prepare_schedule (aTHX_ ta);
1296} 1866}
1297 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
1298static int 1901static int
1299prepare_cede_notself (pTHX_ struct transfer_args *ta) 1902api_cede (pTHX)
1300{ 1903{
1301 if (coro_nready) 1904 struct coro_transfer_args ta;
1302 { 1905
1303 SV *prev = SvRV (coro_current);
1304 prepare_schedule (aTHX_ ta); 1906 prepare_cede (aTHX_ &ta);
1305 api_ready (prev); 1907
1908 if (expect_true (ta.prev != ta.next))
1909 {
1910 TRANSFER (ta, 1);
1306 return 1; 1911 return 1;
1307 } 1912 }
1308 else 1913 else
1309 return 0; 1914 return 0;
1310} 1915}
1311 1916
1312static void
1313api_schedule (void)
1314{
1315 dTHX;
1316 struct transfer_args ta;
1317
1318 prepare_schedule (aTHX_ &ta);
1319 TRANSFER (ta);
1320}
1321
1322static int 1917static int
1323api_cede (void) 1918api_cede_notself (pTHX)
1324{ 1919{
1325 dTHX; 1920 if (coro_nready)
1921 {
1326 struct transfer_args ta; 1922 struct coro_transfer_args ta;
1327 1923
1328 prepare_cede (aTHX_ &ta); 1924 prepare_cede_notself (aTHX_ &ta);
1329
1330 if (ta.prev != ta.next)
1331 {
1332 TRANSFER (ta); 1925 TRANSFER (ta, 1);
1333 return 1; 1926 return 1;
1334 } 1927 }
1335 else 1928 else
1336 return 0; 1929 return 0;
1337} 1930}
1338 1931
1339static int 1932static void
1340api_cede_notself (void)
1341{
1342 dTHX;
1343 struct transfer_args ta;
1344
1345 if (prepare_cede_notself (aTHX_ &ta))
1346 {
1347 TRANSFER (ta);
1348 return 1;
1349 }
1350 else
1351 return 0;
1352}
1353
1354static void
1355api_trace (SV *coro_sv, int flags) 1933api_trace (pTHX_ SV *coro_sv, int flags)
1356{ 1934{
1357 dTHX;
1358 struct coro *coro = SvSTATE (coro_sv); 1935 struct coro *coro = SvSTATE (coro_sv);
1359 1936
1937 if (coro->flags & CF_RUNNING)
1938 croak ("cannot enable tracing on a running coroutine, caught");
1939
1360 if (flags & CC_TRACE) 1940 if (flags & CC_TRACE)
1361 { 1941 {
1362 if (!coro->cctx) 1942 if (!coro->cctx)
1363 coro->cctx = cctx_new (); 1943 coro->cctx = cctx_new_run ();
1364 else if (!(coro->cctx->flags & CC_TRACE)) 1944 else if (!(coro->cctx->flags & CC_TRACE))
1365 croak ("cannot enable tracing on coroutine with custom stack"); 1945 croak ("cannot enable tracing on coroutine with custom stack, caught");
1366 1946
1367 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1947 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1368 } 1948 }
1369 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1949 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1370 { 1950 {
1371 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1951 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1372 1952
1373 if (coro->flags & CF_RUNNING) 1953 if (coro->flags & CF_RUNNING)
1374 PL_runops = RUNOPS_DEFAULT; 1954 PL_runops = RUNOPS_DEFAULT;
1375 else 1955 else
1376 coro->runops = RUNOPS_DEFAULT; 1956 coro->slot->runops = RUNOPS_DEFAULT;
1957 }
1958}
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;
1377 } 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 }
1378} 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
1379 2993
1380MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2994MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1381 2995
1382PROTOTYPES: DISABLE 2996PROTOTYPES: DISABLE
1383 2997
1384BOOT: 2998BOOT:
1385{ 2999{
1386#ifdef USE_ITHREADS 3000#ifdef USE_ITHREADS
1387 MUTEX_INIT (&coro_mutex); 3001# if CORO_PTHREAD
3002 coro_thx = PERL_GET_CONTEXT;
3003# endif
1388#endif 3004#endif
1389 BOOT_PAGESIZE; 3005 BOOT_PAGESIZE;
3006
3007 cctx_current = cctx_new_empty ();
1390 3008
1391 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3009 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1392 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3010 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
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
3016 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
3017 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
3018 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1393 3019
1394 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3020 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1395 3021
1396 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3022 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1397 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3023 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1402 main_top_env = PL_top_env; 3028 main_top_env = PL_top_env;
1403 3029
1404 while (main_top_env->je_prev) 3030 while (main_top_env->je_prev)
1405 main_top_env = main_top_env->je_prev; 3031 main_top_env = main_top_env->je_prev;
1406 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
1407 coroapi.ver = CORO_API_VERSION; 3043 coroapi.ver = CORO_API_VERSION;
3044 coroapi.rev = CORO_API_REVISION;
3045
1408 coroapi.transfer = api_transfer; 3046 coroapi.transfer = api_transfer;
1409 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
1410 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3067 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1411} 3068}
1412 3069
1413SV * 3070SV *
1414new (char *klass, ...) 3071new (char *klass, ...)
3072 ALIAS:
3073 Coro::new = 1
1415 CODE: 3074 CODE:
1416{ 3075{
1417 struct coro *coro; 3076 struct coro *coro;
3077 MAGIC *mg;
1418 HV *hv; 3078 HV *hv;
3079 CV *cb;
1419 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 }
1420 3095
1421 Newz (0, coro, 1, struct coro); 3096 Newz (0, coro, 1, struct coro);
1422 coro->args = newAV (); 3097 coro->args = newAV ();
1423 coro->flags = CF_NEW; 3098 coro->flags = CF_NEW;
1424 3099
1425 if (coro_first) coro_first->prev = coro; 3100 if (coro_first) coro_first->prev = coro;
1426 coro->next = coro_first; 3101 coro->next = coro_first;
1427 coro_first = coro; 3102 coro_first = coro;
1428 3103
1429 coro->hv = hv = newHV (); 3104 coro->hv = hv = newHV ();
1430 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;
1431 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3107 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1432 3108
3109 if (items > 1)
3110 {
1433 av_extend (coro->args, items - 1); 3111 av_extend (coro->args, items - 1 + ix - 1);
1434 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
1435 for (i = 1; i < items; i++) 3121 for (i = 2; i < items; i++)
1436 av_push (coro->args, newSVsv (ST (i))); 3122 av_push (coro->args, newSVsv (ST (i)));
3123 }
1437} 3124}
1438 OUTPUT: 3125 OUTPUT:
1439 RETVAL 3126 RETVAL
1440 3127
1441# these not obviously related functions are all rolled into the same xs
1442# function to increase chances that they all will call transfer with the same
1443# stack offset
1444void 3128void
1445_set_stacklevel (...) 3129transfer (...)
1446 ALIAS: 3130 PROTOTYPE: $$
1447 Coro::State::transfer = 1 3131 CODE:
1448 Coro::schedule = 2 3132 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1449 Coro::cede = 3
1450 Coro::cede_notself = 4
1451 CODE:
1452{
1453 struct transfer_args ta;
1454
1455 switch (ix)
1456 {
1457 case 0:
1458 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1459 ta.next = 0;
1460 break;
1461
1462 case 1:
1463 if (items != 2)
1464 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1465
1466 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1467 break;
1468
1469 case 2:
1470 prepare_schedule (aTHX_ &ta);
1471 break;
1472
1473 case 3:
1474 prepare_cede (aTHX_ &ta);
1475 break;
1476
1477 case 4:
1478 if (!prepare_cede_notself (aTHX_ &ta))
1479 XSRETURN_EMPTY;
1480
1481 break;
1482 }
1483
1484 BARRIER;
1485 TRANSFER (ta);
1486
1487 if (GIMME_V != G_VOID && ta.next != ta.prev)
1488 XSRETURN_YES;
1489}
1490 3133
1491bool 3134bool
1492_destroy (SV *coro_sv) 3135_destroy (SV *coro_sv)
1493 CODE: 3136 CODE:
1494 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3137 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1495 OUTPUT: 3138 OUTPUT:
1496 RETVAL 3139 RETVAL
1497 3140
1498void 3141void
1499_exit (code) 3142_exit (int code)
1500 int code
1501 PROTOTYPE: $ 3143 PROTOTYPE: $
1502 CODE: 3144 CODE:
1503 _exit (code); 3145 _exit (code);
1504 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
1505int 3166int
1506cctx_stacksize (int new_stacksize = 0) 3167cctx_stacksize (int new_stacksize = 0)
3168 PROTOTYPE: ;$
1507 CODE: 3169 CODE:
1508 RETVAL = coro_stacksize; 3170 RETVAL = cctx_stacksize;
1509 if (new_stacksize) 3171 if (new_stacksize)
3172 {
1510 coro_stacksize = new_stacksize; 3173 cctx_stacksize = new_stacksize;
3174 ++cctx_gen;
3175 }
1511 OUTPUT: 3176 OUTPUT:
1512 RETVAL 3177 RETVAL
1513 3178
1514int 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
1515cctx_count () 3190cctx_count ()
3191 PROTOTYPE:
1516 CODE: 3192 CODE:
1517 RETVAL = cctx_count; 3193 RETVAL = cctx_count;
1518 OUTPUT: 3194 OUTPUT:
1519 RETVAL 3195 RETVAL
1520 3196
1521int 3197int
1522cctx_idle () 3198cctx_idle ()
3199 PROTOTYPE:
1523 CODE: 3200 CODE:
1524 RETVAL = cctx_idle; 3201 RETVAL = cctx_idle;
1525 OUTPUT: 3202 OUTPUT:
1526 RETVAL 3203 RETVAL
1527 3204
1528void 3205void
1529list () 3206list ()
3207 PROTOTYPE:
1530 PPCODE: 3208 PPCODE:
1531{ 3209{
1532 struct coro *coro; 3210 struct coro *coro;
1533 for (coro = coro_first; coro; coro = coro->next) 3211 for (coro = coro_first; coro; coro = coro->next)
1534 if (coro->hv) 3212 if (coro->hv)
… …
1539call (Coro::State coro, SV *coderef) 3217call (Coro::State coro, SV *coderef)
1540 ALIAS: 3218 ALIAS:
1541 eval = 1 3219 eval = 1
1542 CODE: 3220 CODE:
1543{ 3221{
1544 if (coro->mainstack) 3222 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1545 { 3223 {
1546 struct coro temp; 3224 struct coro *current = SvSTATE_current;
1547 Zero (&temp, 1, struct coro);
1548 3225
1549 if (!(coro->flags & CF_RUNNING)) 3226 if (current != coro)
1550 { 3227 {
3228 PUTBACK;
1551 save_perl (aTHX_ &temp); 3229 save_perl (aTHX_ current);
1552 load_perl (aTHX_ coro); 3230 load_perl (aTHX_ coro);
3231 SPAGAIN;
1553 } 3232 }
1554 3233
1555 { 3234 PUSHSTACK;
1556 dSP; 3235
1557 ENTER;
1558 SAVETMPS;
1559 PUSHMARK (SP); 3236 PUSHMARK (SP);
1560 PUTBACK; 3237 PUTBACK;
3238
1561 if (ix) 3239 if (ix)
1562 eval_sv (coderef, 0); 3240 eval_sv (coderef, 0);
1563 else 3241 else
1564 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3242 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3243
3244 POPSTACK;
1565 SPAGAIN; 3245 SPAGAIN;
1566 FREETMPS;
1567 LEAVE;
1568 PUTBACK;
1569 }
1570 3246
1571 if (!(coro->flags & CF_RUNNING)) 3247 if (current != coro)
1572 { 3248 {
3249 PUTBACK;
1573 save_perl (aTHX_ coro); 3250 save_perl (aTHX_ coro);
1574 load_perl (aTHX_ &temp); 3251 load_perl (aTHX_ current);
3252 SPAGAIN;
1575 } 3253 }
1576 } 3254 }
1577} 3255}
1578 3256
1579SV * 3257SV *
… …
1582 ALIAS: 3260 ALIAS:
1583 is_ready = CF_READY 3261 is_ready = CF_READY
1584 is_running = CF_RUNNING 3262 is_running = CF_RUNNING
1585 is_new = CF_NEW 3263 is_new = CF_NEW
1586 is_destroyed = CF_DESTROYED 3264 is_destroyed = CF_DESTROYED
3265 is_suspended = CF_SUSPENDED
1587 CODE: 3266 CODE:
1588 RETVAL = boolSV (coro->flags & ix); 3267 RETVAL = boolSV (coro->flags & ix);
1589 OUTPUT: 3268 OUTPUT:
1590 RETVAL 3269 RETVAL
1591 3270
1592void 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
1593api_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
1594 3287
1595SV * 3288SV *
1596has_stack (Coro::State coro) 3289has_cctx (Coro::State coro)
1597 PROTOTYPE: $ 3290 PROTOTYPE: $
1598 CODE: 3291 CODE:
1599 RETVAL = boolSV (!!coro->cctx); 3292 /* maybe manage the running flag differently */
3293 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1600 OUTPUT: 3294 OUTPUT:
1601 RETVAL 3295 RETVAL
1602 3296
1603int 3297int
1604is_traced (Coro::State coro) 3298is_traced (Coro::State coro)
… …
1606 CODE: 3300 CODE:
1607 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3301 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1608 OUTPUT: 3302 OUTPUT:
1609 RETVAL 3303 RETVAL
1610 3304
1611IV 3305UV
1612rss (Coro::State coro) 3306rss (Coro::State coro)
1613 PROTOTYPE: $ 3307 PROTOTYPE: $
1614 ALIAS: 3308 ALIAS:
1615 usecount = 1 3309 usecount = 1
1616 CODE: 3310 CODE:
… …
1620 case 1: RETVAL = coro->usecount; break; 3314 case 1: RETVAL = coro->usecount; break;
1621 } 3315 }
1622 OUTPUT: 3316 OUTPUT:
1623 RETVAL 3317 RETVAL
1624 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}
1625 3384
1626MODULE = Coro::State PACKAGE = Coro 3385MODULE = Coro::State PACKAGE = Coro
1627 3386
1628BOOT: 3387BOOT:
1629{ 3388{
1630 int i;
1631
1632 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3389 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1633 sv_pool_size = 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);
1634 av_async_pool = 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);
1635 3398
1636 coro_current = get_sv ("Coro::current", FALSE); 3399 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1637 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);
1638 3403
1639 coro_stash = gv_stashpv ("Coro", TRUE); 3404 coro_stash = gv_stashpv ("Coro", TRUE);
1640 3405
1641 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3406 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1642 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3407 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1643 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3408 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1644 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3409 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1645 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3410 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1646 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3411 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1647
1648 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1649 coro_ready[i] = newAV ();
1650 3412
1651 { 3413 {
1652 SV *sv = perl_get_sv("Coro::API", 1); 3414 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1653 3415
1654 coroapi.schedule = api_schedule; 3416 coroapi.schedule = api_schedule;
3417 coroapi.schedule_to = api_schedule_to;
1655 coroapi.cede = api_cede; 3418 coroapi.cede = api_cede;
1656 coroapi.cede_notself = api_cede_notself; 3419 coroapi.cede_notself = api_cede_notself;
1657 coroapi.ready = api_ready; 3420 coroapi.ready = api_ready;
1658 coroapi.is_ready = api_is_ready; 3421 coroapi.is_ready = api_is_ready;
1659 coroapi.nready = &coro_nready; 3422 coroapi.nready = coro_nready;
1660 coroapi.current = coro_current; 3423 coroapi.current = coro_current;
1661 3424
1662 GCoroAPI = &coroapi; 3425 /*GCoroAPI = &coroapi;*/
1663 sv_setiv (sv, (IV)&coroapi); 3426 sv_setiv (sv, (IV)&coroapi);
1664 SvREADONLY_on (sv); 3427 SvREADONLY_on (sv);
1665 } 3428 }
1666} 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);
1667 3460
1668void 3461void
1669_set_current (SV *current) 3462_set_current (SV *current)
1670 PROTOTYPE: $ 3463 PROTOTYPE: $
1671 CODE: 3464 CODE:
1672 SvREFCNT_dec (SvRV (coro_current)); 3465 SvREFCNT_dec (SvRV (coro_current));
1673 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;
1674 3475
1675int 3476int
1676prio (Coro::State coro, int newprio = 0) 3477prio (Coro::State coro, int newprio = 0)
3478 PROTOTYPE: $;$
1677 ALIAS: 3479 ALIAS:
1678 nice = 1 3480 nice = 1
1679 CODE: 3481 CODE:
1680{ 3482{
1681 RETVAL = coro->prio; 3483 RETVAL = coro->prio;
… …
1683 if (items > 1) 3485 if (items > 1)
1684 { 3486 {
1685 if (ix) 3487 if (ix)
1686 newprio = coro->prio - newprio; 3488 newprio = coro->prio - newprio;
1687 3489
1688 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3490 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1689 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3491 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1690 3492
1691 coro->prio = newprio; 3493 coro->prio = newprio;
1692 } 3494 }
1693} 3495}
1694 OUTPUT: 3496 OUTPUT:
… …
1696 3498
1697SV * 3499SV *
1698ready (SV *self) 3500ready (SV *self)
1699 PROTOTYPE: $ 3501 PROTOTYPE: $
1700 CODE: 3502 CODE:
1701 RETVAL = boolSV (api_ready (self)); 3503 RETVAL = boolSV (api_ready (aTHX_ self));
1702 OUTPUT: 3504 OUTPUT:
1703 RETVAL 3505 RETVAL
1704 3506
1705int 3507int
1706nready (...) 3508nready (...)
… …
1708 CODE: 3510 CODE:
1709 RETVAL = coro_nready; 3511 RETVAL = coro_nready;
1710 OUTPUT: 3512 OUTPUT:
1711 RETVAL 3513 RETVAL
1712 3514
1713# for async_pool speedup
1714void 3515void
1715_pool_1 (SV *cb) 3516suspend (Coro::State self)
3517 PROTOTYPE: $
1716 CODE: 3518 CODE:
1717{ 3519 self->flags |= CF_SUSPENDED;
1718 struct coro *coro = SvSTATE (coro_current);
1719 HV *hv = (HV *)SvRV (coro_current);
1720 AV *defav = GvAV (PL_defgv);
1721 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1722 AV *invoke_av;
1723 int i, len;
1724 3520
1725 if (!invoke) 3521void
1726 croak ("\3terminate\2\n"); 3522resume (Coro::State self)
3523 PROTOTYPE: $
3524 CODE:
3525 self->flags &= ~CF_SUSPENDED;
1727 3526
1728 SvREFCNT_dec (coro->saved_deffh); 3527void
1729 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3528_pool_handler (...)
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1730 3531
1731 hv_store (hv, "desc", sizeof ("desc") - 1, 3532void
1732 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 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;
1733 3541
1734 invoke_av = (AV *)SvRV (invoke); 3542 av_extend (av, items - 2);
1735 len = av_len (invoke_av); 3543 for (i = 1; i < items; ++i)
3544 av_push (av, SvREFCNT_inc_NN (ST (i)));
1736 3545
1737 sv_setsv (cb, AvARRAY (invoke_av)[0]); 3546 if ((SV *)hv == &PL_sv_undef)
1738
1739 if (len > 0)
1740 { 3547 {
1741 av_fill (defav, len - 1); 3548 PUSHMARK (SP);
1742 for (i = 0; i < len; ++i) 3549 EXTEND (SP, 2);
1743 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));
1744 } 3557 }
1745 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
1746 SvREFCNT_dec (invoke); 3573 SvREFCNT_dec (hv);
1747} 3574}
1748 3575
1749void 3576SV *
1750_pool_2 (SV *cb) 3577rouse_cb ()
3578 PROTOTYPE:
1751 CODE: 3579 CODE:
1752{ 3580 RETVAL = coro_new_rouse_cb (aTHX);
1753 struct coro *coro = SvSTATE (coro_current);
1754
1755 sv_setsv (cb, &PL_sv_undef);
1756
1757 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1758 coro->saved_deffh = 0;
1759
1760 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1761 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1762 croak ("\3terminate\2\n");
1763
1764 av_clear (GvAV (PL_defgv));
1765 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1767
1768 coro->prio = 0;
1769
1770 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1771 api_trace (coro_current, 0);
1772
1773 av_push (av_async_pool, newSVsv (coro_current));
1774}
1775
1776
1777MODULE = Coro::State PACKAGE = Coro::AIO
1778
1779SV *
1780_get_state ()
1781 CODE:
1782{
1783 struct io_state *data;
1784
1785 RETVAL = newSV (sizeof (struct io_state));
1786 data = (struct io_state *)SvPVX (RETVAL);
1787 SvCUR_set (RETVAL, sizeof (struct io_state));
1788 SvPOK_only (RETVAL);
1789
1790 data->errorno = errno;
1791 data->laststype = PL_laststype;
1792 data->laststatval = PL_laststatval;
1793 data->statcache = PL_statcache;
1794}
1795 OUTPUT: 3581 OUTPUT:
1796 RETVAL 3582 RETVAL
1797 3583
1798void 3584void
1799_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
1800 PROTOTYPE: $ 3594 PROTOTYPE: &
1801 CODE: 3595 CODE:
1802{ 3596{
1803 struct io_state *data = (void *)data_; 3597 struct coro *coro = SvSTATE_current;
3598 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
1804 3599
1805 errno = data->errorno; 3600 block = (SV *)coro_sv_2cv (aTHX_ block);
1806 PL_laststype = data->laststype;
1807 PL_laststatval = data->laststatval;
1808 PL_statcache = data->statcache;
1809}
1810 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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