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Comparing Coro/Coro/State.xs (file contents):
Revision 1.262 by root, Mon Nov 10 20:38:19 2008 UTC vs.
Revision 1.368 by root, Thu Aug 13 02:35:41 2009 UTC

… …
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h" 9#include "perliol.h"
10 10
11#include "patchlevel.h" 11#include "schmorp.h"
12 12
13#include <stdio.h> 13#include <stdio.h>
14#include <errno.h> 14#include <errno.h>
15#include <assert.h> 15#include <assert.h>
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108 55
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
111#endif 58#endif
112 59
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 67#endif
121 68
122/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 70 * portable way as possible. */
71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
73# define STACKLEVEL __builtin_frame_address (0)
74#else
124#define dSTACKLEVEL volatile char stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 76# define STACKLEVEL ((void *)&stacklevel)
77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128 80
129#if __GNUC__ >= 3 81#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
133#else 85#else
134# define attribute(x) 86# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
88# define INLINE static
137#endif 89#endif
138 90
139#define expect_false(expr) expect ((expr) != 0, 0) 91#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
141 93
142#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
143 95
144#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
145 98
146#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 100# if CORO_PTHREAD
152static void *coro_thx; 101static void *coro_thx;
153# endif 102# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 103#endif
161 104
162# undef LOCK 105#ifdef __linux
163# define LOCK (void)0 106# include <time.h> /* for timespec */
164# undef UNLOCK 107# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 108# ifdef SYS_clock_gettime
166 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 110# define CORO_CLOCK_MONOTONIC 1
168struct io_state 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 112# endif
170 AV *res; 113#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 114
177static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
178 121
179static U32 cctx_gen; 122static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 126static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 129
188struct transfer_args 130static AV *av_destroy; /* destruction queue */
189{ 131static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 132static SV *sv_idle; /* $Coro::idle */
191};
192 133
193static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 136static SV *rv_diehook;
196static SV *rv_warnhook; 137static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
198 139
199/* async_pool helper stuff */ 140/* async_pool helper stuff */
200static SV *sv_pool_rss; 141static SV *sv_pool_rss;
201static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
203 148
204/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
205static SV *sv_activity; 150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
206 157
207static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
208static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
209 160
210enum { 161enum {
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 168};
218 169
219/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 171typedef struct coro_cctx
172{
221 struct coro_cctx *next; 173 struct coro_cctx *next;
222 174
223 /* the stack */ 175 /* the stack */
224 void *sptr; 176 void *sptr;
225 size_t ssize; 177 size_t ssize;
… …
235 int valgrind_id; 187 int valgrind_id;
236#endif 188#endif
237 unsigned char flags; 189 unsigned char flags;
238} coro_cctx; 190} coro_cctx;
239 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
240enum { 196enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
245}; 202};
246 203
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 205typedef struct
206{
249 SV *defsv; 207 SV *defsv;
250 AV *defav; 208 AV *defav;
251 SV *errsv; 209 SV *errsv;
252 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
253#define VAR(name,type) type name; 212#define VAR(name,type) type name;
254# include "state.h" 213# include "state.h"
255#undef VAR 214#undef VAR
256} perl_slots; 215} perl_slots;
257 216
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 218
260/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
261struct coro { 220struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 222 coro_cctx *cctx;
264 223
265 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 229 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
268 231
232 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
273 238
274 /* statistics */ 239 /* statistics */
275 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
276 241
277 /* coro process data */ 242 /* coro process data */
278 int prio; 243 int prio;
279 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
280 246
281 /* async_pool */ 247 /* async_pool */
282 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* times */
257 coro_ts t_cpu, t_real;
283 258
284 /* linked list */ 259 /* linked list */
285 struct coro *next, *prev; 260 struct coro *next, *prev;
286}; 261};
287 262
288typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
290 265
266/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */
269static struct CoroSLF slf_frame; /* the current slf frame */
270
291/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
292 272
293#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
299 279
300/* for Coro.pm */ 280/* for Coro.pm */
301static SV *coro_current; 281static SV *coro_current;
302static SV *coro_readyhook; 282static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
304static int coro_nready; 284static CV *cv_coro_run, *cv_coro_terminate;
305static struct coro *coro_first; 285static struct coro *coro_first;
286#define coro_nready coroapi.nready
287
288/** Coro::Select ************************************************************/
289
290static OP *(*coro_old_pp_sselect) (pTHX);
291static SV *coro_select_select;
292
293/* horrible hack, but if it works... */
294static OP *
295coro_pp_sselect (aTHX)
296{
297 dSP;
298 PUSHMARK (SP - 4); /* fake argument list */
299 XPUSHs (coro_select_select);
300 PUTBACK;
301
302 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
303 PL_op->op_flags |= OPf_STACKED;
304 PL_op->op_private = 0;
305 return PL_ppaddr [OP_ENTERSUB](aTHX);
306}
306 307
307/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
308 309
309static SV * 310static SV *
310coro_get_sv (pTHX_ const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 335 get_hv (name, create);
335#endif 336#endif
336 return get_hv (name, create); 337 return get_hv (name, create);
337} 338}
338 339
340INLINE void
341coro_times_update ()
342{
343#ifdef coro_clock_gettime
344 struct timespec ts;
345
346 ts.tv_sec = ts.tv_nsec = 0;
347 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
348 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
349
350 ts.tv_sec = ts.tv_nsec = 0;
351 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
352 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
353#else
354 dTHX;
355 UV tv[2];
356
357 u2time (aTHX_ tv);
358 time_real [0] = tv [0];
359 time_real [1] = tv [1] * 1000;
360#endif
361}
362
363INLINE void
364coro_times_add (struct coro *c)
365{
366 c->t_real [1] += time_real [1];
367 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
368 c->t_real [0] += time_real [0];
369
370 c->t_cpu [1] += time_cpu [1];
371 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
372 c->t_cpu [0] += time_cpu [0];
373}
374
375INLINE void
376coro_times_sub (struct coro *c)
377{
378 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
379 c->t_real [1] -= time_real [1];
380 c->t_real [0] -= time_real [0];
381
382 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
383 c->t_cpu [1] -= time_cpu [1];
384 c->t_cpu [0] -= time_cpu [0];
385}
386
387/*****************************************************************************/
388/* magic glue */
389
390#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext
392
393#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \
396 : mg_find (sv, type))
397
398#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \
401 : 0)
402
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405
406INLINE struct coro *
407SvSTATE_ (pTHX_ SV *coro)
408{
409 HV *stash;
410 MAGIC *mg;
411
412 if (SvROK (coro))
413 coro = SvRV (coro);
414
415 if (expect_false (SvTYPE (coro) != SVt_PVHV))
416 croak ("Coro::State object required");
417
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr;
428}
429
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431
432/* faster than SvSTATE, but expects a coroutine hv */
433#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435
436/*****************************************************************************/
437/* padlist management and caching */
438
339static AV * 439static AV *
340coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
341{ 441{
342 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
344 444
345 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 451#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 453 --AvFILLp (padlist);
354 454
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
357 457
358 return newpadlist; 458 return newpadlist;
359} 459}
360 460
361static void 461static void
362free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
363{ 463{
364 /* may be during global destruction */ 464 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
366 { 466 {
367 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
368 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
369 { 470 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
371 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 473 I32 j = AvFILLp (av);
373 SV *sv; 474
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 480 }
380 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
382 } 486 }
383} 487}
384 488
385static int 489static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 491{
388 AV *padlist; 492 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 493 AV *av = (AV *)mg->mg_obj;
494
495 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT)
497 return 0;
390 498
391 /* casting is fun. */ 499 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
394 502
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 504
397 return 0; 505 return 0;
398} 506}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 507
403static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 509 0, 0, 0, 0,
405 coro_cv_free 510 coro_cv_free
406}; 511};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418static struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 512
444/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
445static void 514static void
446get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
447{ 516{
… …
453 else 522 else
454 { 523 {
455#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 525 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 526 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
462#else 531#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 533#endif
465 } 534 }
466} 535}
467 536
468static void 537static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 545
477 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
478 547
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
481 550
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 552}
484 553
485/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
486 558
487static void 559static void
488load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
489{ 561{
490 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
491 c->slot = 0; 563 c->slot = 0;
492 564
493 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
494 566
495 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
499 572
500 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 574 # include "state.h"
502 #undef VAR 575 #undef VAR
503 576
… …
514 CvPADLIST (cv) = (AV *)POPs; 587 CvPADLIST (cv) = (AV *)POPs;
515 } 588 }
516 589
517 PUTBACK; 590 PUTBACK;
518 } 591 }
592
593 slf_frame = c->slf_frame;
594 CORO_THROW = c->except;
595
596 if (expect_false (enable_times))
597 {
598 if (expect_false (!times_valid))
599 coro_times_update ();
600
601 coro_times_sub (c);
602 }
603
604 if (expect_false (c->on_enter))
605 {
606 int i;
607
608 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
610 }
519} 611}
520 612
521static void 613static void
522save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
523{ 615{
616 if (expect_false (c->on_leave))
617 {
618 int i;
619
620 for (i = AvFILLp (c->on_leave); i >= 0; --i)
621 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
622 }
623
624 times_valid = 0;
625
626 if (expect_false (enable_times))
627 {
628 coro_times_update (); times_valid = 1;
629 coro_times_add (c);
630 }
631
632 c->except = CORO_THROW;
633 c->slf_frame = slf_frame;
634
524 { 635 {
525 dSP; 636 dSP;
526 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 638 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 639 PERL_SI *top_si = PL_curstackinfo;
… …
538 { 649 {
539 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
540 { 651 {
541 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
542 653
543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 654 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
544 { 655 {
545 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
546 657
547 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
548 { 659 {
… …
572 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
573 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
574 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
576 { 687 {
577 int i; 688 unsigned int i;
578 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC; 690 CXINC;
580 } 691 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
582 693
583 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
584 695
585 { 696 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 698
588 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
592 704
593 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 706 # include "state.h"
595 #undef VAR 707 #undef VAR
596 } 708 }
597} 709}
598 710
599/* 711/*
600 * allocate various perl stacks. This is an exact copy 712 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
604 */ 716 */
605#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
607#else 719#else
608static void 720static void
609coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
610{ 722{
611 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 787 Safefree (PL_retstack);
676#endif 788#endif
677} 789}
678 790
791#define CORO_RSS \
792 rss += sizeof (SYM (curstackinfo)); \
793 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
794 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
795 rss += SYM (tmps_max) * sizeof (SV *); \
796 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
797 rss += SYM (scopestack_max) * sizeof (I32); \
798 rss += SYM (savestack_max) * sizeof (ANY);
799
679static size_t 800static size_t
680coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
681{ 802{
682 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
683 804
684 if (coro->mainstack) 805 if (coro->mainstack)
685 { 806 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
690 { 808 {
691 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
692 810 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 811 #undef SYM
696 } 812 }
697 else 813 else
698 slot = coro->slot;
699
700 if (slot)
701 { 814 {
702 rss += sizeof (slot->curstackinfo); 815 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 816 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 817 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 818 }
714 } 819 }
715 820
716 return rss; 821 return rss;
717} 822}
… …
730#endif 835#endif
731 836
732/* 837/*
733 * This overrides the default magic get method of %SIG elements. 838 * This overrides the default magic get method of %SIG elements.
734 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 839 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
735 * and instead of tryign to save and restore the hash elements, we just provide 840 * and instead of trying to save and restore the hash elements, we just provide
736 * readback here. 841 * readback here.
737 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
738 * not expecting this to actually change the hook. This is a potential problem
739 * when a schedule happens then, but we ignore this.
740 */ 842 */
741static int 843static int
742coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
743{ 845{
744 const char *s = MgPV_nolen_const (mg); 846 const char *s = MgPV_nolen_const (mg);
… …
797 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
798 900
799 if (svp) 901 if (svp)
800 { 902 {
801 SV *old = *svp; 903 SV *old = *svp;
802 *svp = newSVsv (sv); 904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
803 SvREFCNT_dec (old); 905 SvREFCNT_dec (old);
804 return 0; 906 return 0;
805 } 907 }
806 } 908 }
807 909
808 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
809} 911}
810 912
811static void 913static void
914prepare_nop (pTHX_ struct coro_transfer_args *ta)
915{
916 /* kind of mega-hacky, but works */
917 ta->next = ta->prev = (struct coro *)ta;
918}
919
920static int
921slf_check_nop (pTHX_ struct CoroSLF *frame)
922{
923 return 0;
924}
925
926static int
927slf_check_repeat (pTHX_ struct CoroSLF *frame)
928{
929 return 1;
930}
931
932static UNOP coro_setup_op;
933
934static void NOINLINE /* noinline to keep it out of the transfer fast path */
812coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
813{ 936{
814 /* 937 /*
815 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
816 */ 939 */
… …
818 941
819 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
820 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
821 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
822 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
823 PL_curpm = 0; 949 PL_curpm = 0;
824 PL_curpad = 0; 950 PL_curpad = 0;
825 PL_localizing = 0; 951 PL_localizing = 0;
826 PL_dirty = 0; 952 PL_dirty = 0;
827 PL_restartop = 0; 953 PL_restartop = 0;
828#if PERL_VERSION_ATLEAST (5,10,0) 954#if PERL_VERSION_ATLEAST (5,10,0)
829 PL_parser = 0; 955 PL_parser = 0;
830#endif 956#endif
957 PL_hints = 0;
831 958
832 /* recreate the die/warn hooks */ 959 /* recreate the die/warn hooks */
833 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 960 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
834 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 961 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
835 962
836 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
837 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
838 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
839 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 966 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
967 GvHV (PL_hintgv) = 0;
840 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
841 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
842 970
843 { 971 {
844 dSP; 972 dSP;
845 UNOP myop; 973 UNOP myop;
846 974
847 Zero (&myop, 1, UNOP); 975 Zero (&myop, 1, UNOP);
848 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
849 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
850 979
851 PUSHMARK (SP); 980 PUSHMARK (SP);
852 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
853 PUTBACK; 982 PUTBACK;
854 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
855 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
856 SPAGAIN;
857 } 985 }
858 986
859 /* this newly created coroutine might be run on an existing cctx which most 987 /* this newly created coroutine might be run on an existing cctx which most
860 * likely was suspended in set_stacklevel, called from entersub. 988 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
861 * set_stacklevel doesn't do anything on return, but entersub does LEAVE,
862 * so we ENTER here for symmetry.
863 */ 989 */
864 ENTER; 990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
865} 991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
866 992
993 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
994 coro_setup_op.op_next = PL_op;
995 coro_setup_op.op_type = OP_ENTERSUB;
996 coro_setup_op.op_ppaddr = pp_slf;
997 /* no flags etc. required, as an init function won't be called */
998
999 PL_op = (OP *)&coro_setup_op;
1000
1001 /* copy throw, in case it was set before coro_setup */
1002 CORO_THROW = coro->except;
1003
1004 if (expect_false (enable_times))
1005 {
1006 coro_times_update ();
1007 coro_times_sub (coro);
1008 }
1009}
1010
867static void 1011static void
868coro_destruct (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
869{ 1013{
870 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
871 { 1015 {
872 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
873 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
881 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
882 1026
883 /* unwind main stack */ 1027 /* unwind main stack */
884 dounwind (-1); 1028 dounwind (-1);
885 } 1029 }
1030}
886 1031
887 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
888 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
889 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
890 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
891 SvREFCNT_dec (PL_rs);
892 SvREFCNT_dec (GvSV (irsgv));
893 1036
894 SvREFCNT_dec (PL_diehook);
895 SvREFCNT_dec (PL_warnhook);
896 1037 {
1038 struct coro *current = SvSTATE_current;
1039
1040 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1041
1042 save_perl (aTHX_ current);
1043 load_perl (aTHX_ coro);
1044
1045 coro_unwind_stacks (aTHX);
1046 coro_destruct_stacks (aTHX);
1047
1048 // now save some sv's to be free'd later
1049 svf [0] = GvSV (PL_defgv);
1050 svf [1] = (SV *)GvAV (PL_defgv);
1051 svf [2] = GvSV (PL_errgv);
1052 svf [3] = (SV *)PL_defoutgv;
1053 svf [4] = PL_rs;
1054 svf [5] = GvSV (irsgv);
1055 svf [6] = (SV *)GvHV (PL_hintgv);
1056 svf [7] = PL_diehook;
1057 svf [8] = PL_warnhook;
1058 assert (9 == sizeof (svf) / sizeof (*svf));
1059
1060 load_perl (aTHX_ current);
1061 }
1062
1063 {
1064 unsigned int i;
1065
1066 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1067 SvREFCNT_dec (svf [i]);
1068
897 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
898 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
899 1071 SvREFCNT_dec (coro->invoke_cb);
900 coro_destruct_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
901} 1074}
902 1075
903static void 1076INLINE void
904free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
905{ 1078{
906 if (expect_true (coro_mortal)) 1079 if (expect_true (coro_mortal))
907 { 1080 {
908 SvREFCNT_dec (coro_mortal); 1081 SvREFCNT_dec (coro_mortal);
… …
913static int 1086static int
914runops_trace (pTHX) 1087runops_trace (pTHX)
915{ 1088{
916 COP *oldcop = 0; 1089 COP *oldcop = 0;
917 int oldcxix = -2; 1090 int oldcxix = -2;
918 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
919 coro_cctx *cctx = coro->cctx;
920 1091
921 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
922 { 1093 {
923 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
924 1095
925 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
926 { 1097 {
927 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1098 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
928 { 1099 {
929 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
930 SV **bot, **top; 1101 SV **bot, **top;
931 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
932 SV **cb; 1103 SV **cb;
… …
969 1140
970 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
971 { 1142 {
972 SV **cb; 1143 SV **cb;
973 1144
974 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
975 { 1146 {
976 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
977 1148
978 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
979 { 1150 {
980 runops_proc_t old_runops = PL_runops;
981 dSP; 1151 dSP;
982 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
983 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
984 1154
985 if (isGV (gv)) 1155 if (isGV (gv))
… …
990 SAVETMPS; 1160 SAVETMPS;
991 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
992 PUSHMARK (SP); 1162 PUSHMARK (SP);
993 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
994 PUSHs (fullname); 1164 PUSHs (fullname);
995 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1165 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
996 PUTBACK; 1166 PUTBACK;
997 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1167 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
998 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1168 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
999 SPAGAIN; 1169 SPAGAIN;
1000 FREETMPS; 1170 FREETMPS;
… …
1003 } 1173 }
1004 1174
1005 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
1006 } 1176 }
1007 1177
1008 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
1009 { 1179 {
1010 dSP; 1180 dSP;
1011 1181
1012 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
1013 ENTER; 1183 ENTER;
… …
1032 1202
1033 TAINT_NOT; 1203 TAINT_NOT;
1034 return 0; 1204 return 0;
1035} 1205}
1036 1206
1207static struct CoroSLF cctx_ssl_frame;
1208
1037static void 1209static void
1038prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1210slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1039{ 1211{
1040 ta->prev = (struct coro *)cctx;
1041 ta->next = 0; 1212 ta->prev = 0;
1042} 1213}
1043 1214
1044/* inject a fake call to Coro::State::_cctx_init into the execution */ 1215static int
1045/* _cctx_init should be careful, as it could be called at almost any time */ 1216slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1046/* during execution of a perl program */ 1217{
1047/* also initialises PL_top_env */ 1218 *frame = cctx_ssl_frame;
1219
1220 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1221}
1222
1223/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1048static void NOINLINE 1224static void NOINLINE
1049cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
1050{ 1226{
1051 dSP;
1052 UNOP myop;
1053
1054 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
1055 1228
1056 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
1057 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
1058 1231
1059 Zero (&myop, 1, UNOP); 1232 /* we already must be executing an SLF op, there is no other valid way
1060 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
1061 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1234 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1235 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1062 1236
1063 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1064 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
1065 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1239
1066 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
1067 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
1068 PL_op = (OP *)&myop;
1069 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1070 SPAGAIN;
1071} 1242}
1072 1243
1073/* the tail of transfer: execute stuff we can only do after a transfer */ 1244/* the tail of transfer: execute stuff we can only do after a transfer */
1074static void 1245INLINE void
1075transfer_tail (pTHX) 1246transfer_tail (pTHX)
1076{ 1247{
1077 struct coro *next = (struct coro *)transfer_next;
1078 transfer_next = 0; //D for temporary assertion in transfer
1079 assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D
1080
1081 free_coro_mortal (aTHX); 1248 free_coro_mortal (aTHX);
1082 UNLOCK;
1083
1084 if (expect_false (next->throw))
1085 {
1086 SV *exception = sv_2mortal (next->throw);
1087
1088 next->throw = 0;
1089 sv_setsv (ERRSV, exception);
1090 croak (0);
1091 }
1092} 1249}
1093 1250
1094/* 1251/*
1095 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
1096 */ 1253 */
… …
1103# endif 1260# endif
1104#endif 1261#endif
1105 { 1262 {
1106 dTHX; 1263 dTHX;
1107 1264
1108 /* entersub called ENTER, but we never 'returned', undo that here */ 1265 /* normally we would need to skip the entersub here */
1109 LEAVE; 1266 /* not doing so will re-execute it, which is exactly what we want */
1110
1111 /* we now skip the entersub that did lead to transfer() */
1112 PL_op = PL_op->op_next; 1267 /* PL_nop = PL_nop->op_next */
1113 1268
1114 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
1115 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
1116 1271
1117 /* cctx_run is the alternative tail of transfer() */ 1272 /* cctx_run is the alternative tail of transfer() */
1118 transfer_tail (aTHX); 1273 transfer_tail (aTHX);
1119 1274
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1275 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1281 * runtime errors here, as this is just a random interpreter, not a thread.
1282 */
1123 1283
1124 /* 1284 /*
1125 * If perl-run returns we assume exit() was being called or the coro 1285 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug) 1286 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the 1287 * reason for perl_run to return. We try to exit by jumping to the
1128 * bootstrap-time "top" top_env, as we cannot restore the "main" 1288 * bootstrap-time "top" top_env, as we cannot restore the "main"
1129 * coroutine as Coro has no such concept 1289 * coroutine as Coro has no such concept.
1290 * This actually isn't valid with the pthread backend, but OSes requiring
1291 * that backend are too broken to do it in a standards-compliant way.
1130 */ 1292 */
1131 PL_top_env = main_top_env; 1293 PL_top_env = main_top_env;
1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1294 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 } 1295 }
1134} 1296}
… …
1173 /* mmap supposedly does allocate-on-write for us */ 1335 /* mmap supposedly does allocate-on-write for us */
1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1336 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1175 1337
1176 if (cctx->sptr != (void *)-1) 1338 if (cctx->sptr != (void *)-1)
1177 { 1339 {
1178# if CORO_STACKGUARD 1340 #if CORO_STACKGUARD
1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1341 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1180# endif 1342 #endif
1181 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1343 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1344 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183 cctx->flags |= CC_MAPPED; 1345 cctx->flags |= CC_MAPPED;
1184 } 1346 }
1185 else 1347 else
1186#endif 1348#endif
1187 { 1349 {
1188 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1350 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189 New (0, cctx->sptr, cctx_stacksize, long); 1351 New (0, cctx->sptr, cctx_stacksize, long);
1190 1352
1191 if (!cctx->sptr) 1353 if (!cctx->sptr)
1192 { 1354 {
1193 perror ("FATAL: unable to allocate stack for coroutine"); 1355 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1194 _exit (EXIT_FAILURE); 1356 _exit (EXIT_FAILURE);
1195 } 1357 }
1196 1358
1197 stack_start = cctx->sptr; 1359 stack_start = cctx->sptr;
1198 stack_size = cctx->ssize; 1360 stack_size = cctx->ssize;
1199 } 1361 }
1200 1362
1201 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1363 #if CORO_USE_VALGRIND
1364 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1365 #endif
1366
1202 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1367 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1203 1368
1204 return cctx; 1369 return cctx;
1205} 1370}
1206 1371
… …
1208cctx_destroy (coro_cctx *cctx) 1373cctx_destroy (coro_cctx *cctx)
1209{ 1374{
1210 if (!cctx) 1375 if (!cctx)
1211 return; 1376 return;
1212 1377
1378 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1379
1213 --cctx_count; 1380 --cctx_count;
1214 coro_destroy (&cctx->cctx); 1381 coro_destroy (&cctx->cctx);
1215 1382
1216 /* coro_transfer creates new, empty cctx's */ 1383 /* coro_transfer creates new, empty cctx's */
1217 if (cctx->sptr) 1384 if (cctx->sptr)
1218 { 1385 {
1219#if CORO_USE_VALGRIND 1386 #if CORO_USE_VALGRIND
1220 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1387 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1221#endif 1388 #endif
1222 1389
1223#if HAVE_MMAP 1390#if HAVE_MMAP
1224 if (cctx->flags & CC_MAPPED) 1391 if (cctx->flags & CC_MAPPED)
1225 munmap (cctx->sptr, cctx->ssize); 1392 munmap (cctx->sptr, cctx->ssize);
1226 else 1393 else
… …
1253} 1420}
1254 1421
1255static void 1422static void
1256cctx_put (coro_cctx *cctx) 1423cctx_put (coro_cctx *cctx)
1257{ 1424{
1258 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1425 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1259 1426
1260 /* free another cctx if overlimit */ 1427 /* free another cctx if overlimit */
1261 if (expect_false (cctx_idle >= cctx_max_idle)) 1428 if (expect_false (cctx_idle >= cctx_max_idle))
1262 { 1429 {
1263 coro_cctx *first = cctx_first; 1430 coro_cctx *first = cctx_first;
… …
1275/** coroutine switching *****************************************************/ 1442/** coroutine switching *****************************************************/
1276 1443
1277static void 1444static void
1278transfer_check (pTHX_ struct coro *prev, struct coro *next) 1445transfer_check (pTHX_ struct coro *prev, struct coro *next)
1279{ 1446{
1447 /* TODO: throwing up here is considered harmful */
1448
1280 if (expect_true (prev != next)) 1449 if (expect_true (prev != next))
1281 { 1450 {
1282 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1451 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1283 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1452 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1284 1453
1285 if (expect_false (next->flags & CF_RUNNING))
1286 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1287
1288 if (expect_false (next->flags & CF_DESTROYED)) 1454 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1289 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1455 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1290 1456
1291#if !PERL_VERSION_ATLEAST (5,10,0) 1457#if !PERL_VERSION_ATLEAST (5,10,0)
1292 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1458 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1293 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1459 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1294#endif 1460#endif
1295 } 1461 }
1296} 1462}
1297 1463
1298/* always use the TRANSFER macro */ 1464/* always use the TRANSFER macro */
1299static void NOINLINE 1465static void NOINLINE /* noinline so we have a fixed stackframe */
1300transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1466transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1301{ 1467{
1302 dSTACKLEVEL; 1468 dSTACKLEVEL;
1303 1469
1304 /* sometimes transfer is only called to set idle_sp */ 1470 /* sometimes transfer is only called to set idle_sp */
1305 if (expect_false (!next)) 1471 if (expect_false (!prev))
1306 { 1472 {
1307 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1473 cctx_current->idle_sp = STACKLEVEL;
1308 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1474 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1309 } 1475 }
1310 else if (expect_true (prev != next)) 1476 else if (expect_true (prev != next))
1311 { 1477 {
1312 coro_cctx *prev__cctx; 1478 coro_cctx *cctx_prev;
1313 1479
1314 if (expect_false (prev->flags & CF_NEW)) 1480 if (expect_false (prev->flags & CF_NEW))
1315 { 1481 {
1316 /* create a new empty/source context */ 1482 /* create a new empty/source context */
1317 prev->cctx = cctx_new_empty ();
1318 prev->flags &= ~CF_NEW; 1483 prev->flags &= ~CF_NEW;
1319 prev->flags |= CF_RUNNING; 1484 prev->flags |= CF_RUNNING;
1320 } 1485 }
1321 1486
1322 prev->flags &= ~CF_RUNNING; 1487 prev->flags &= ~CF_RUNNING;
1323 next->flags |= CF_RUNNING; 1488 next->flags |= CF_RUNNING;
1324
1325 LOCK;
1326 1489
1327 /* first get rid of the old state */ 1490 /* first get rid of the old state */
1328 save_perl (aTHX_ prev); 1491 save_perl (aTHX_ prev);
1329 1492
1330 if (expect_false (next->flags & CF_NEW)) 1493 if (expect_false (next->flags & CF_NEW))
… …
1335 coro_setup (aTHX_ next); 1498 coro_setup (aTHX_ next);
1336 } 1499 }
1337 else 1500 else
1338 load_perl (aTHX_ next); 1501 load_perl (aTHX_ next);
1339 1502
1340 prev__cctx = prev->cctx;
1341
1342 /* possibly untie and reuse the cctx */ 1503 /* possibly untie and reuse the cctx */
1343 if (expect_true ( 1504 if (expect_true (
1344 prev__cctx->idle_sp == STACKLEVEL 1505 cctx_current->idle_sp == STACKLEVEL
1345 && !(prev__cctx->flags & CC_TRACE) 1506 && !(cctx_current->flags & CC_TRACE)
1346 && !force_cctx 1507 && !force_cctx
1347 )) 1508 ))
1348 { 1509 {
1349 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1510 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1350 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1511 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1351 1512
1352 prev->cctx = 0;
1353
1354 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1513 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1355 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1514 /* without this the next cctx_get might destroy the running cctx while still in use */
1356 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1515 if (expect_false (CCTX_EXPIRED (cctx_current)))
1357 if (!next->cctx) 1516 if (expect_true (!next->cctx))
1358 next->cctx = cctx_get (aTHX); 1517 next->cctx = cctx_get (aTHX);
1359 1518
1360 cctx_put (prev__cctx); 1519 cctx_put (cctx_current);
1361 } 1520 }
1521 else
1522 prev->cctx = cctx_current;
1362 1523
1363 ++next->usecount; 1524 ++next->usecount;
1364 1525
1365 if (expect_true (!next->cctx)) 1526 cctx_prev = cctx_current;
1366 next->cctx = cctx_get (aTHX); 1527 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1367 1528
1368 assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D 1529 next->cctx = 0;
1369 transfer_next = next;
1370 1530
1371 if (expect_false (prev__cctx != next->cctx)) 1531 if (expect_false (cctx_prev != cctx_current))
1372 { 1532 {
1373 prev__cctx->top_env = PL_top_env; 1533 cctx_prev->top_env = PL_top_env;
1374 PL_top_env = next->cctx->top_env; 1534 PL_top_env = cctx_current->top_env;
1375 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1535 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1376 } 1536 }
1377 1537
1378 transfer_tail (aTHX); 1538 transfer_tail (aTHX);
1379 } 1539 }
1380} 1540}
… …
1387static int 1547static int
1388coro_state_destroy (pTHX_ struct coro *coro) 1548coro_state_destroy (pTHX_ struct coro *coro)
1389{ 1549{
1390 if (coro->flags & CF_DESTROYED) 1550 if (coro->flags & CF_DESTROYED)
1391 return 0; 1551 return 0;
1552
1553 if (coro->on_destroy && !PL_dirty)
1554 coro->on_destroy (aTHX_ coro);
1392 1555
1393 coro->flags |= CF_DESTROYED; 1556 coro->flags |= CF_DESTROYED;
1394 1557
1395 if (coro->flags & CF_READY) 1558 if (coro->flags & CF_READY)
1396 { 1559 {
1397 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1560 /* reduce nready, as destroying a ready coro effectively unreadies it */
1398 /* alternative: look through all ready queues and remove the coro */ 1561 /* alternative: look through all ready queues and remove the coro */
1399 LOCK;
1400 --coro_nready; 1562 --coro_nready;
1401 UNLOCK;
1402 } 1563 }
1403 else 1564 else
1404 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1565 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1405 1566
1406 if (coro->mainstack && coro->mainstack != main_mainstack) 1567 if (coro->mainstack
1407 { 1568 && coro->mainstack != main_mainstack
1408 struct coro temp; 1569 && coro->slot
1409 1570 && !PL_dirty)
1410 if (coro->flags & CF_RUNNING)
1411 croak ("FATAL: tried to destroy currently running coroutine");
1412
1413 save_perl (aTHX_ &temp);
1414 load_perl (aTHX_ coro);
1415
1416 coro_destruct (aTHX_ coro); 1571 coro_destruct_perl (aTHX_ coro);
1417
1418 load_perl (aTHX_ &temp);
1419
1420 coro->slot = 0;
1421 }
1422 1572
1423 cctx_destroy (coro->cctx); 1573 cctx_destroy (coro->cctx);
1574 SvREFCNT_dec (coro->startcv);
1424 SvREFCNT_dec (coro->args); 1575 SvREFCNT_dec (coro->args);
1576 SvREFCNT_dec (CORO_THROW);
1425 1577
1426 if (coro->next) coro->next->prev = coro->prev; 1578 if (coro->next) coro->next->prev = coro->prev;
1427 if (coro->prev) coro->prev->next = coro->next; 1579 if (coro->prev) coro->prev->next = coro->next;
1428 if (coro == coro_first) coro_first = coro->next; 1580 if (coro == coro_first) coro_first = coro->next;
1429 1581
… …
1467# define MGf_DUP 0 1619# define MGf_DUP 0
1468#endif 1620#endif
1469}; 1621};
1470 1622
1471static void 1623static void
1472prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1624prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1473{ 1625{
1474 ta->prev = SvSTATE (prev_sv); 1626 ta->prev = SvSTATE (prev_sv);
1475 ta->next = SvSTATE (next_sv); 1627 ta->next = SvSTATE (next_sv);
1476 TRANSFER_CHECK (*ta); 1628 TRANSFER_CHECK (*ta);
1477} 1629}
1478 1630
1479static void 1631static void
1480api_transfer (SV *prev_sv, SV *next_sv) 1632api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1481{ 1633{
1482 dTHX;
1483 struct transfer_args ta; 1634 struct coro_transfer_args ta;
1484 1635
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1636 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1637 TRANSFER (ta, 1);
1487} 1638}
1488 1639
1489/** Coro ********************************************************************/ 1640/** Coro ********************************************************************/
1490 1641
1491static void 1642INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1643coro_enq (pTHX_ struct coro *coro)
1493{ 1644{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1495}
1496 1646
1497static SV * 1647 SvREFCNT_inc_NN (coro->hv);
1648
1649 coro->next_ready = 0;
1650 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1651 ready [1] = coro;
1652}
1653
1654INLINE struct coro *
1498coro_deq (pTHX) 1655coro_deq (pTHX)
1499{ 1656{
1500 int prio; 1657 int prio;
1501 1658
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1503 if (AvFILLp (coro_ready [prio]) >= 0) 1660 {
1504 return av_shift (coro_ready [prio]); 1661 struct coro **ready = coro_ready [prio];
1662
1663 if (ready [0])
1664 {
1665 struct coro *coro = ready [0];
1666 ready [0] = coro->next_ready;
1667 return coro;
1668 }
1669 }
1505 1670
1506 return 0; 1671 return 0;
1507} 1672}
1508 1673
1674static void
1675invoke_sv_ready_hook_helper (void)
1676{
1677 dTHX;
1678 dSP;
1679
1680 ENTER;
1681 SAVETMPS;
1682
1683 PUSHMARK (SP);
1684 PUTBACK;
1685 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1686
1687 FREETMPS;
1688 LEAVE;
1689}
1690
1509static int 1691static int
1510api_ready (SV *coro_sv) 1692api_ready (pTHX_ SV *coro_sv)
1511{ 1693{
1512 dTHX;
1513 struct coro *coro;
1514 SV *sv_hook;
1515 void (*xs_hook)(void);
1516
1517 if (SvROK (coro_sv))
1518 coro_sv = SvRV (coro_sv);
1519
1520 coro = SvSTATE (coro_sv); 1694 struct coro *coro = SvSTATE (coro_sv);
1521 1695
1522 if (coro->flags & CF_READY) 1696 if (coro->flags & CF_READY)
1523 return 0; 1697 return 0;
1524 1698
1525 coro->flags |= CF_READY; 1699 coro->flags |= CF_READY;
1526 1700
1527 LOCK; 1701 coro_enq (aTHX_ coro);
1528 1702
1529 sv_hook = coro_nready ? 0 : coro_readyhook; 1703 if (!coro_nready++)
1530 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1704 if (coroapi.readyhook)
1531 1705 coroapi.readyhook ();
1532 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1533 ++coro_nready;
1534
1535 UNLOCK;
1536
1537 if (sv_hook)
1538 {
1539 dSP;
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1555 1706
1556 return 1; 1707 return 1;
1557} 1708}
1558 1709
1559static int 1710static int
1560api_is_ready (SV *coro_sv) 1711api_is_ready (pTHX_ SV *coro_sv)
1561{ 1712{
1562 dTHX;
1563 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1713 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1564} 1714}
1565 1715
1566static void 1716/* expects to own a reference to next->hv */
1717INLINE void
1567prepare_schedule (pTHX_ struct transfer_args *ta) 1718prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1568{ 1719{
1569 SV *prev_sv, *next_sv;
1570
1571 for (;;)
1572 {
1573 LOCK;
1574 next_sv = coro_deq (aTHX);
1575
1576 /* nothing to schedule: call the idle handler */
1577 if (expect_false (!next_sv))
1578 {
1579 dSP;
1580 UNLOCK;
1581
1582 ENTER;
1583 SAVETMPS;
1584
1585 PUSHMARK (SP);
1586 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1588 SPAGAIN;
1589
1590 FREETMPS;
1591 LEAVE;
1592 continue;
1593 }
1594
1595 ta->next = SvSTATE (next_sv);
1596
1597 /* cannot transfer to destroyed coros, skip and look for next */
1598 if (expect_false (ta->next->flags & CF_DESTROYED))
1599 {
1600 UNLOCK;
1601 SvREFCNT_dec (next_sv);
1602 /* coro_nready has already been taken care of by destroy */
1603 continue;
1604 }
1605
1606 --coro_nready;
1607 UNLOCK;
1608 break;
1609 }
1610
1611 /* free this only after the transfer */
1612 prev_sv = SvRV (coro_current); 1720 SV *prev_sv = SvRV (coro_current);
1721
1613 ta->prev = SvSTATE (prev_sv); 1722 ta->prev = SvSTATE_hv (prev_sv);
1723 ta->next = next;
1724
1614 TRANSFER_CHECK (*ta); 1725 TRANSFER_CHECK (*ta);
1615 assert (ta->next->flags & CF_READY); 1726
1616 ta->next->flags &= ~CF_READY;
1617 SvRV_set (coro_current, next_sv); 1727 SvRV_set (coro_current, (SV *)next->hv);
1618 1728
1619 LOCK;
1620 free_coro_mortal (aTHX); 1729 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1730 coro_mortal = prev_sv;
1622 UNLOCK;
1623} 1731}
1624 1732
1625static void 1733static void
1734prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1735{
1736 for (;;)
1737 {
1738 struct coro *next = coro_deq (aTHX);
1739
1740 if (expect_true (next))
1741 {
1742 /* cannot transfer to destroyed coros, skip and look for next */
1743 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1744 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1745 else
1746 {
1747 next->flags &= ~CF_READY;
1748 --coro_nready;
1749
1750 prepare_schedule_to (aTHX_ ta, next);
1751 break;
1752 }
1753 }
1754 else
1755 {
1756 /* nothing to schedule: call the idle handler */
1757 if (SvROK (sv_idle)
1758 && SvOBJECT (SvRV (sv_idle)))
1759 {
1760 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1761 api_ready (aTHX_ SvRV (sv_idle));
1762 --coro_nready;
1763 }
1764 else
1765 {
1766 dSP;
1767
1768 ENTER;
1769 SAVETMPS;
1770
1771 PUSHMARK (SP);
1772 PUTBACK;
1773 call_sv (sv_idle, G_VOID | G_DISCARD);
1774
1775 FREETMPS;
1776 LEAVE;
1777 }
1778 }
1779 }
1780}
1781
1782INLINE void
1626prepare_cede (pTHX_ struct transfer_args *ta) 1783prepare_cede (pTHX_ struct coro_transfer_args *ta)
1627{ 1784{
1628 api_ready (coro_current); 1785 api_ready (aTHX_ coro_current);
1629 prepare_schedule (aTHX_ ta); 1786 prepare_schedule (aTHX_ ta);
1630} 1787}
1631 1788
1789INLINE void
1790prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1791{
1792 SV *prev = SvRV (coro_current);
1793
1794 if (coro_nready)
1795 {
1796 prepare_schedule (aTHX_ ta);
1797 api_ready (aTHX_ prev);
1798 }
1799 else
1800 prepare_nop (aTHX_ ta);
1801}
1802
1803static void
1804api_schedule (pTHX)
1805{
1806 struct coro_transfer_args ta;
1807
1808 prepare_schedule (aTHX_ &ta);
1809 TRANSFER (ta, 1);
1810}
1811
1812static void
1813api_schedule_to (pTHX_ SV *coro_sv)
1814{
1815 struct coro_transfer_args ta;
1816 struct coro *next = SvSTATE (coro_sv);
1817
1818 SvREFCNT_inc_NN (coro_sv);
1819 prepare_schedule_to (aTHX_ &ta, next);
1820}
1821
1632static int 1822static int
1633prepare_cede_notself (pTHX_ struct transfer_args *ta) 1823api_cede (pTHX)
1634{ 1824{
1635 if (coro_nready) 1825 struct coro_transfer_args ta;
1636 { 1826
1637 SV *prev = SvRV (coro_current);
1638 prepare_schedule (aTHX_ ta); 1827 prepare_cede (aTHX_ &ta);
1639 api_ready (prev); 1828
1829 if (expect_true (ta.prev != ta.next))
1830 {
1831 TRANSFER (ta, 1);
1640 return 1; 1832 return 1;
1641 } 1833 }
1642 else 1834 else
1643 return 0; 1835 return 0;
1644} 1836}
1645 1837
1646static void
1647api_schedule (void)
1648{
1649 dTHX;
1650 struct transfer_args ta;
1651
1652 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1);
1654}
1655
1656static int 1838static int
1657api_cede (void) 1839api_cede_notself (pTHX)
1658{ 1840{
1659 dTHX; 1841 if (coro_nready)
1842 {
1660 struct transfer_args ta; 1843 struct coro_transfer_args ta;
1661 1844
1662 prepare_cede (aTHX_ &ta); 1845 prepare_cede_notself (aTHX_ &ta);
1663
1664 if (expect_true (ta.prev != ta.next))
1665 {
1666 TRANSFER (ta, 1); 1846 TRANSFER (ta, 1);
1667 return 1; 1847 return 1;
1668 } 1848 }
1669 else 1849 else
1670 return 0; 1850 return 0;
1671} 1851}
1672 1852
1673static int 1853static void
1674api_cede_notself (void)
1675{
1676 dTHX;
1677 struct transfer_args ta;
1678
1679 if (prepare_cede_notself (aTHX_ &ta))
1680 {
1681 TRANSFER (ta, 1);
1682 return 1;
1683 }
1684 else
1685 return 0;
1686}
1687
1688static void
1689api_trace (SV *coro_sv, int flags) 1854api_trace (pTHX_ SV *coro_sv, int flags)
1690{ 1855{
1691 dTHX;
1692 struct coro *coro = SvSTATE (coro_sv); 1856 struct coro *coro = SvSTATE (coro_sv);
1857
1858 if (coro->flags & CF_RUNNING)
1859 croak ("cannot enable tracing on a running coroutine, caught");
1693 1860
1694 if (flags & CC_TRACE) 1861 if (flags & CC_TRACE)
1695 { 1862 {
1696 if (!coro->cctx) 1863 if (!coro->cctx)
1697 coro->cctx = cctx_new_run (); 1864 coro->cctx = cctx_new_run ();
1698 else if (!(coro->cctx->flags & CC_TRACE)) 1865 else if (!(coro->cctx->flags & CC_TRACE))
1699 croak ("cannot enable tracing on coroutine with custom stack"); 1866 croak ("cannot enable tracing on coroutine with custom stack, caught");
1700 1867
1701 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1868 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1702 } 1869 }
1703 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1870 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1704 { 1871 {
… …
1709 else 1876 else
1710 coro->slot->runops = RUNOPS_DEFAULT; 1877 coro->slot->runops = RUNOPS_DEFAULT;
1711 } 1878 }
1712} 1879}
1713 1880
1714#if 0 1881static void
1882coro_call_on_destroy (pTHX_ struct coro *coro)
1883{
1884 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1885 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1886
1887 if (on_destroyp)
1888 {
1889 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1890
1891 while (AvFILLp (on_destroy) >= 0)
1892 {
1893 dSP; /* don't disturb outer sp */
1894 SV *cb = av_pop (on_destroy);
1895
1896 PUSHMARK (SP);
1897
1898 if (statusp)
1899 {
1900 int i;
1901 AV *status = (AV *)SvRV (*statusp);
1902 EXTEND (SP, AvFILLp (status) + 1);
1903
1904 for (i = 0; i <= AvFILLp (status); ++i)
1905 PUSHs (AvARRAY (status)[i]);
1906 }
1907
1908 PUTBACK;
1909 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1910 }
1911 }
1912}
1913
1914static void
1915slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1916{
1917 int i;
1918 HV *hv = (HV *)SvRV (coro_current);
1919 AV *av = newAV ();
1920
1921 /* items are actually not so common, so optimise for this case */
1922 if (items)
1923 {
1924 av_extend (av, items - 1);
1925
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928 }
1929
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1931
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager);
1934
1935 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat;
1937
1938 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/
1941}
1942
1943/*****************************************************************************/
1944/* async pool handler */
1945
1715static int 1946static int
1716coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1947slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1717{ 1948{
1718 AV *padlist; 1949 HV *hv = (HV *)SvRV (coro_current);
1719 AV *av = (AV *)mg->mg_obj; 1950 struct coro *coro = (struct coro *)frame->data;
1720 1951
1721 abort (); 1952 if (!coro->invoke_cb)
1953 return 1; /* loop till we have invoke */
1954 else
1955 {
1956 hv_store (hv, "desc", sizeof ("desc") - 1,
1957 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1958
1959 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1960
1961 {
1962 dSP;
1963 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1964 PUTBACK;
1965 }
1966
1967 SvREFCNT_dec (GvAV (PL_defgv));
1968 GvAV (PL_defgv) = coro->invoke_av;
1969 coro->invoke_av = 0;
1970
1971 return 0;
1972 }
1973}
1974
1975static void
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{
1978 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980
1981 if (expect_true (coro->saved_deffh))
1982 {
1983 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0;
1986
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1991 coro->invoke_av = newAV ();
1992
1993 frame->prepare = prepare_nop;
1994 }
1995 else
1996 {
1997 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1999
2000 coro->prio = 0;
2001
2002 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2003 api_trace (aTHX_ coro_current, 0);
2004
2005 frame->prepare = prepare_schedule;
2006 av_push (av_async_pool, SvREFCNT_inc (hv));
2007 }
2008 }
2009 else
2010 {
2011 /* first iteration, simply fall through */
2012 frame->prepare = prepare_nop;
2013 }
2014
2015 frame->check = slf_check_pool_handler;
2016 frame->data = (void *)coro;
2017}
2018
2019/*****************************************************************************/
2020/* rouse callback */
2021
2022#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2023
2024static void
2025coro_rouse_callback (pTHX_ CV *cv)
2026{
2027 dXSARGS;
2028 SV *data = (SV *)S_GENSUB_ARG;
2029
2030 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2031 {
2032 /* first call, set args */
2033 SV *coro = SvRV (data);
2034 AV *av = newAV ();
2035
2036 SvRV_set (data, (SV *)av);
2037
2038 /* better take a full copy of the arguments */
2039 while (items--)
2040 av_store (av, items, newSVsv (ST (items)));
2041
2042 api_ready (aTHX_ coro);
2043 SvREFCNT_dec (coro);
2044 }
2045
2046 XSRETURN_EMPTY;
2047}
2048
2049static int
2050slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2051{
2052 SV *data = (SV *)frame->data;
2053
2054 if (CORO_THROW)
2055 return 0;
2056
2057 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2058 return 1;
2059
2060 /* now push all results on the stack */
2061 {
2062 dSP;
2063 AV *av = (AV *)SvRV (data);
2064 int i;
2065
2066 EXTEND (SP, AvFILLp (av) + 1);
2067 for (i = 0; i <= AvFILLp (av); ++i)
2068 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2069
2070 /* we have stolen the elements, so set length to zero and free */
2071 AvFILLp (av) = -1;
2072 av_undef (av);
2073
2074 PUTBACK;
2075 }
1722 2076
1723 return 0; 2077 return 0;
1724} 2078}
1725 2079
1726static MGVTBL coro_gensub_vtbl = { 2080static void
1727 0, 0, 0, 0, 2081slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1728 coro_gensub_free 2082{
1729}; 2083 SV *cb;
1730#endif 2084
2085 if (items)
2086 cb = arg [0];
2087 else
2088 {
2089 struct coro *coro = SvSTATE_current;
2090
2091 if (!coro->rouse_cb)
2092 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2093
2094 cb = sv_2mortal (coro->rouse_cb);
2095 coro->rouse_cb = 0;
2096 }
2097
2098 if (!SvROK (cb)
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,");
2102
2103 {
2104 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2105 SV *data = (SV *)S_GENSUB_ARG;
2106
2107 frame->data = (void *)data;
2108 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2109 frame->check = slf_check_rouse_wait;
2110 }
2111}
2112
2113static SV *
2114coro_new_rouse_cb (pTHX)
2115{
2116 HV *hv = (HV *)SvRV (coro_current);
2117 struct coro *coro = SvSTATE_hv (hv);
2118 SV *data = newRV_inc ((SV *)hv);
2119 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2120
2121 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2122 SvREFCNT_dec (data); /* magicext increases the refcount */
2123
2124 SvREFCNT_dec (coro->rouse_cb);
2125 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2126
2127 return cb;
2128}
2129
2130/*****************************************************************************/
2131/* schedule-like-function opcode (SLF) */
2132
2133static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2134static const CV *slf_cv;
2135static SV **slf_argv;
2136static int slf_argc, slf_arga; /* count, allocated */
2137static I32 slf_ax; /* top of stack, for restore */
2138
2139/* this restores the stack in the case we patched the entersub, to */
2140/* recreate the stack frame as perl will on following calls */
2141/* since entersub cleared the stack */
2142static OP *
2143pp_restore (pTHX)
2144{
2145 int i;
2146 SV **SP = PL_stack_base + slf_ax;
2147
2148 PUSHMARK (SP);
2149
2150 EXTEND (SP, slf_argc + 1);
2151
2152 for (i = 0; i < slf_argc; ++i)
2153 PUSHs (sv_2mortal (slf_argv [i]));
2154
2155 PUSHs ((SV *)CvGV (slf_cv));
2156
2157 RETURNOP (slf_restore.op_first);
2158}
2159
2160static void
2161slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2162{
2163 SV **arg = (SV **)slf_frame.data;
2164
2165 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2166}
2167
2168static void
2169slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2170{
2171 if (items != 2)
2172 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2173
2174 frame->prepare = slf_prepare_transfer;
2175 frame->check = slf_check_nop;
2176 frame->data = (void *)arg; /* let's hope it will stay valid */
2177}
2178
2179static void
2180slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2181{
2182 frame->prepare = prepare_schedule;
2183 frame->check = slf_check_nop;
2184}
2185
2186static void
2187slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2188{
2189 struct coro *next = (struct coro *)slf_frame.data;
2190
2191 SvREFCNT_inc_NN (next->hv);
2192 prepare_schedule_to (aTHX_ ta, next);
2193}
2194
2195static void
2196slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 if (!items)
2199 croak ("Coro::schedule_to expects a coroutine argument, caught");
2200
2201 frame->data = (void *)SvSTATE (arg [0]);
2202 frame->prepare = slf_prepare_schedule_to;
2203 frame->check = slf_check_nop;
2204}
2205
2206static void
2207slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2208{
2209 api_ready (aTHX_ SvRV (coro_current));
2210
2211 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2212}
2213
2214static void
2215slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 frame->prepare = prepare_cede;
2218 frame->check = slf_check_nop;
2219}
2220
2221static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{
2224 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop;
2226}
2227
2228/*
2229 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same
2231 * stack offset
2232 * SLF stands for "schedule-like-function".
2233 */
2234static OP *
2235pp_slf (pTHX)
2236{
2237 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238
2239 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare))
2243 {
2244 /* first iteration */
2245 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */
2248 SV *gv = *sp;
2249
2250 /* do a quick consistency check on the "function" object, and if it isn't */
2251 /* for us, divert to the real entersub */
2252 if (SvTYPE (gv) != SVt_PVGV
2253 || !GvCV (gv)
2254 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2255 return PL_ppaddr[OP_ENTERSUB](aTHX);
2256
2257 if (!(PL_op->op_flags & OPf_STACKED))
2258 {
2259 /* ampersand-form of call, use @_ instead of stack */
2260 AV *av = GvAV (PL_defgv);
2261 arg = AvARRAY (av);
2262 items = AvFILLp (av) + 1;
2263 }
2264
2265 /* now call the init function, which needs to set up slf_frame */
2266 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2267 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2268
2269 /* pop args */
2270 SP = PL_stack_base + POPMARK;
2271
2272 PUTBACK;
2273 }
2274
2275 /* now that we have a slf_frame, interpret it! */
2276 /* we use a callback system not to make the code needlessly */
2277 /* complicated, but so we can run multiple perl coros from one cctx */
2278
2279 do
2280 {
2281 struct coro_transfer_args ta;
2282
2283 slf_frame.prepare (aTHX_ &ta);
2284 TRANSFER (ta, 0);
2285
2286 checkmark = PL_stack_sp - PL_stack_base;
2287 }
2288 while (slf_frame.check (aTHX_ &slf_frame));
2289
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291
2292 /* exception handling */
2293 if (expect_false (CORO_THROW))
2294 {
2295 SV *exception = sv_2mortal (CORO_THROW);
2296
2297 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception);
2299 croak (0);
2300 }
2301
2302 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR)
2305 {
2306 dSP;
2307 SV **bot = PL_stack_base + checkmark;
2308
2309 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */
2312 bot [1] = *sp;
2313
2314 SP = bot + 1;
2315
2316 PUTBACK;
2317 }
2318
2319 return NORMAL;
2320}
2321
2322static void
2323api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2324{
2325 int i;
2326 SV **arg = PL_stack_base + ax;
2327 int items = PL_stack_sp - arg + 1;
2328
2329 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2330
2331 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2332 && PL_op->op_ppaddr != pp_slf)
2333 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2334
2335 CvFLAGS (cv) |= CVf_SLF;
2336 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2337 slf_cv = cv;
2338
2339 /* we patch the op, and then re-run the whole call */
2340 /* we have to put the same argument on the stack for this to work */
2341 /* and this will be done by pp_restore */
2342 slf_restore.op_next = (OP *)&slf_restore;
2343 slf_restore.op_type = OP_CUSTOM;
2344 slf_restore.op_ppaddr = pp_restore;
2345 slf_restore.op_first = PL_op;
2346
2347 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2348
2349 if (PL_op->op_flags & OPf_STACKED)
2350 {
2351 if (items > slf_arga)
2352 {
2353 slf_arga = items;
2354 free (slf_argv);
2355 slf_argv = malloc (slf_arga * sizeof (SV *));
2356 }
2357
2358 slf_argc = items;
2359
2360 for (i = 0; i < items; ++i)
2361 slf_argv [i] = SvREFCNT_inc (arg [i]);
2362 }
2363 else
2364 slf_argc = 0;
2365
2366 PL_op->op_ppaddr = pp_slf;
2367 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2368
2369 PL_op = (OP *)&slf_restore;
2370}
2371
2372/*****************************************************************************/
2373/* dynamic wind */
2374
2375static void
2376on_enterleave_call (pTHX_ SV *cb)
2377{
2378 dSP;
2379
2380 PUSHSTACK;
2381
2382 PUSHMARK (SP);
2383 PUTBACK;
2384 call_sv (cb, G_VOID | G_DISCARD);
2385 SPAGAIN;
2386
2387 POPSTACK;
2388}
2389
2390static SV *
2391coro_avp_pop_and_free (pTHX_ AV **avp)
2392{
2393 AV *av = *avp;
2394 SV *res = av_pop (av);
2395
2396 if (AvFILLp (av) < 0)
2397 {
2398 *avp = 0;
2399 SvREFCNT_dec (av);
2400 }
2401
2402 return res;
2403}
2404
2405static void
2406coro_pop_on_enter (pTHX_ void *coro)
2407{
2408 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2409 SvREFCNT_dec (cb);
2410}
2411
2412static void
2413coro_pop_on_leave (pTHX_ void *coro)
2414{
2415 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2416 on_enterleave_call (aTHX_ sv_2mortal (cb));
2417}
1731 2418
1732/*****************************************************************************/ 2419/*****************************************************************************/
1733/* PerlIO::cede */ 2420/* PerlIO::cede */
1734 2421
1735typedef struct 2422typedef struct
… …
1763 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2450 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1764 double now = nvtime (); 2451 double now = nvtime ();
1765 2452
1766 if (now >= self->next) 2453 if (now >= self->next)
1767 { 2454 {
1768 api_cede (); 2455 api_cede (aTHX);
1769 self->next = now + self->every; 2456 self->next = now + self->every;
1770 } 2457 }
1771 2458
1772 return PerlIOBuf_flush (aTHX_ f); 2459 return PerlIOBuf_flush (aTHX_ f);
1773} 2460}
… …
1802 PerlIOBuf_get_ptr, 2489 PerlIOBuf_get_ptr,
1803 PerlIOBuf_get_cnt, 2490 PerlIOBuf_get_cnt,
1804 PerlIOBuf_set_ptrcnt, 2491 PerlIOBuf_set_ptrcnt,
1805}; 2492};
1806 2493
2494/*****************************************************************************/
2495/* Coro::Semaphore & Coro::Signal */
2496
2497static SV *
2498coro_waitarray_new (pTHX_ int count)
2499{
2500 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2501 AV *av = newAV ();
2502 SV **ary;
2503
2504 /* unfortunately, building manually saves memory */
2505 Newx (ary, 2, SV *);
2506 AvALLOC (av) = ary;
2507#if PERL_VERSION_ATLEAST (5,10,0)
2508 AvARRAY (av) = ary;
2509#else
2510 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2511 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2512 SvPVX ((SV *)av) = (char *)ary;
2513#endif
2514 AvMAX (av) = 1;
2515 AvFILLp (av) = 0;
2516 ary [0] = newSViv (count);
2517
2518 return newRV_noinc ((SV *)av);
2519}
2520
2521/* semaphore */
2522
2523static void
2524coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2525{
2526 SV *count_sv = AvARRAY (av)[0];
2527 IV count = SvIVX (count_sv);
2528
2529 count += adjust;
2530 SvIVX (count_sv) = count;
2531
2532 /* now wake up as many waiters as are expected to lock */
2533 while (count > 0 && AvFILLp (av) > 0)
2534 {
2535 SV *cb;
2536
2537 /* swap first two elements so we can shift a waiter */
2538 AvARRAY (av)[0] = AvARRAY (av)[1];
2539 AvARRAY (av)[1] = count_sv;
2540 cb = av_shift (av);
2541
2542 if (SvOBJECT (cb))
2543 {
2544 api_ready (aTHX_ cb);
2545 --count;
2546 }
2547 else if (SvTYPE (cb) == SVt_PVCV)
2548 {
2549 dSP;
2550 PUSHMARK (SP);
2551 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2552 PUTBACK;
2553 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2554 }
2555
2556 SvREFCNT_dec (cb);
2557 }
2558}
2559
2560static void
2561coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2562{
2563 /* call $sem->adjust (0) to possibly wake up some other waiters */
2564 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2565}
2566
2567static int
2568slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2569{
2570 AV *av = (AV *)frame->data;
2571 SV *count_sv = AvARRAY (av)[0];
2572
2573 /* if we are about to throw, don't actually acquire the lock, just throw */
2574 if (CORO_THROW)
2575 return 0;
2576 else if (SvIVX (count_sv) > 0)
2577 {
2578 SvSTATE_current->on_destroy = 0;
2579
2580 if (acquire)
2581 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2582 else
2583 coro_semaphore_adjust (aTHX_ av, 0);
2584
2585 return 0;
2586 }
2587 else
2588 {
2589 int i;
2590 /* if we were woken up but can't down, we look through the whole */
2591 /* waiters list and only add us if we aren't in there already */
2592 /* this avoids some degenerate memory usage cases */
2593
2594 for (i = 1; i <= AvFILLp (av); ++i)
2595 if (AvARRAY (av)[i] == SvRV (coro_current))
2596 return 1;
2597
2598 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2599 return 1;
2600 }
2601}
2602
2603static int
2604slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2605{
2606 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2607}
2608
2609static int
2610slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2611{
2612 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2613}
2614
2615static void
2616slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2617{
2618 AV *av = (AV *)SvRV (arg [0]);
2619
2620 if (SvIVX (AvARRAY (av)[0]) > 0)
2621 {
2622 frame->data = (void *)av;
2623 frame->prepare = prepare_nop;
2624 }
2625 else
2626 {
2627 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2628
2629 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2630 frame->prepare = prepare_schedule;
2631
2632 /* to avoid race conditions when a woken-up coro gets terminated */
2633 /* we arrange for a temporary on_destroy that calls adjust (0) */
2634 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2635 }
2636}
2637
2638static void
2639slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2640{
2641 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2642 frame->check = slf_check_semaphore_down;
2643}
2644
2645static void
2646slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2647{
2648 if (items >= 2)
2649 {
2650 /* callback form */
2651 AV *av = (AV *)SvRV (arg [0]);
2652 SV *cb_cv = s_get_cv_croak (arg [1]);
2653
2654 av_push (av, SvREFCNT_inc_NN (cb_cv));
2655
2656 if (SvIVX (AvARRAY (av)[0]) > 0)
2657 coro_semaphore_adjust (aTHX_ av, 0);
2658
2659 frame->prepare = prepare_nop;
2660 frame->check = slf_check_nop;
2661 }
2662 else
2663 {
2664 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2665 frame->check = slf_check_semaphore_wait;
2666 }
2667}
2668
2669/* signal */
2670
2671static void
2672coro_signal_wake (pTHX_ AV *av, int count)
2673{
2674 SvIVX (AvARRAY (av)[0]) = 0;
2675
2676 /* now signal count waiters */
2677 while (count > 0 && AvFILLp (av) > 0)
2678 {
2679 SV *cb;
2680
2681 /* swap first two elements so we can shift a waiter */
2682 cb = AvARRAY (av)[0];
2683 AvARRAY (av)[0] = AvARRAY (av)[1];
2684 AvARRAY (av)[1] = cb;
2685
2686 cb = av_shift (av);
2687
2688 if (SvTYPE (cb) == SVt_PVCV)
2689 {
2690 dSP;
2691 PUSHMARK (SP);
2692 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2693 PUTBACK;
2694 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2695 }
2696 else
2697 {
2698 api_ready (aTHX_ cb);
2699 sv_setiv (cb, 0); /* signal waiter */
2700 }
2701
2702 SvREFCNT_dec (cb);
2703
2704 --count;
2705 }
2706}
2707
2708static int
2709slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2710{
2711 /* if we are about to throw, also stop waiting */
2712 return SvROK ((SV *)frame->data) && !CORO_THROW;
2713}
2714
2715static void
2716slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2717{
2718 AV *av = (AV *)SvRV (arg [0]);
2719
2720 if (items >= 2)
2721 {
2722 SV *cb_cv = s_get_cv_croak (arg [1]);
2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724
2725 if (SvIVX (AvARRAY (av)[0]))
2726 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2727
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else if (SvIVX (AvARRAY (av)[0]))
2732 {
2733 SvIVX (AvARRAY (av)[0]) = 0;
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2740
2741 av_push (av, waiter);
2742
2743 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2744 frame->prepare = prepare_schedule;
2745 frame->check = slf_check_signal_wait;
2746 }
2747}
2748
2749/*****************************************************************************/
2750/* Coro::AIO */
2751
2752#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2753
2754/* helper storage struct */
2755struct io_state
2756{
2757 int errorno;
2758 I32 laststype; /* U16 in 5.10.0 */
2759 int laststatval;
2760 Stat_t statcache;
2761};
2762
2763static void
2764coro_aio_callback (pTHX_ CV *cv)
2765{
2766 dXSARGS;
2767 AV *state = (AV *)S_GENSUB_ARG;
2768 SV *coro = av_pop (state);
2769 SV *data_sv = newSV (sizeof (struct io_state));
2770
2771 av_extend (state, items - 1);
2772
2773 sv_upgrade (data_sv, SVt_PV);
2774 SvCUR_set (data_sv, sizeof (struct io_state));
2775 SvPOK_only (data_sv);
2776
2777 {
2778 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2779
2780 data->errorno = errno;
2781 data->laststype = PL_laststype;
2782 data->laststatval = PL_laststatval;
2783 data->statcache = PL_statcache;
2784 }
2785
2786 /* now build the result vector out of all the parameters and the data_sv */
2787 {
2788 int i;
2789
2790 for (i = 0; i < items; ++i)
2791 av_push (state, SvREFCNT_inc_NN (ST (i)));
2792 }
2793
2794 av_push (state, data_sv);
2795
2796 api_ready (aTHX_ coro);
2797 SvREFCNT_dec (coro);
2798 SvREFCNT_dec ((AV *)state);
2799}
2800
2801static int
2802slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2803{
2804 AV *state = (AV *)frame->data;
2805
2806 /* if we are about to throw, return early */
2807 /* this does not cancel the aio request, but at least */
2808 /* it quickly returns */
2809 if (CORO_THROW)
2810 return 0;
2811
2812 /* one element that is an RV? repeat! */
2813 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2814 return 1;
2815
2816 /* restore status */
2817 {
2818 SV *data_sv = av_pop (state);
2819 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2820
2821 errno = data->errorno;
2822 PL_laststype = data->laststype;
2823 PL_laststatval = data->laststatval;
2824 PL_statcache = data->statcache;
2825
2826 SvREFCNT_dec (data_sv);
2827 }
2828
2829 /* push result values */
2830 {
2831 dSP;
2832 int i;
2833
2834 EXTEND (SP, AvFILLp (state) + 1);
2835 for (i = 0; i <= AvFILLp (state); ++i)
2836 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2837
2838 PUTBACK;
2839 }
2840
2841 return 0;
2842}
2843
2844static void
2845slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2846{
2847 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2848 SV *coro_hv = SvRV (coro_current);
2849 struct coro *coro = SvSTATE_hv (coro_hv);
2850
2851 /* put our coroutine id on the state arg */
2852 av_push (state, SvREFCNT_inc_NN (coro_hv));
2853
2854 /* first see whether we have a non-zero priority and set it as AIO prio */
2855 if (coro->prio)
2856 {
2857 dSP;
2858
2859 static SV *prio_cv;
2860 static SV *prio_sv;
2861
2862 if (expect_false (!prio_cv))
2863 {
2864 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2865 prio_sv = newSViv (0);
2866 }
2867
2868 PUSHMARK (SP);
2869 sv_setiv (prio_sv, coro->prio);
2870 XPUSHs (prio_sv);
2871
2872 PUTBACK;
2873 call_sv (prio_cv, G_VOID | G_DISCARD);
2874 }
2875
2876 /* now call the original request */
2877 {
2878 dSP;
2879 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2880 int i;
2881
2882 PUSHMARK (SP);
2883
2884 /* first push all args to the stack */
2885 EXTEND (SP, items + 1);
2886
2887 for (i = 0; i < items; ++i)
2888 PUSHs (arg [i]);
2889
2890 /* now push the callback closure */
2891 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2892
2893 /* now call the AIO function - we assume our request is uncancelable */
2894 PUTBACK;
2895 call_sv ((SV *)req, G_VOID | G_DISCARD);
2896 }
2897
2898 /* now that the requets is going, we loop toll we have a result */
2899 frame->data = (void *)state;
2900 frame->prepare = prepare_schedule;
2901 frame->check = slf_check_aio_req;
2902}
2903
2904static void
2905coro_aio_req_xs (pTHX_ CV *cv)
2906{
2907 dXSARGS;
2908
2909 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2910
2911 XSRETURN_EMPTY;
2912}
2913
2914/*****************************************************************************/
2915
2916#if CORO_CLONE
2917# include "clone.c"
2918#endif
2919
2920/*****************************************************************************/
2921
2922static SV *
2923coro_new (HV *stash, SV **argv, int argc, int is_coro)
2924{
2925 SV *coro_sv;
2926 struct coro *coro;
2927 MAGIC *mg;
2928 HV *hv;
2929 SV *cb;
2930 int i;
2931
2932 if (argc > 0)
2933 {
2934 cb = s_get_cv_croak (argv [0]);
2935
2936 if (!is_coro)
2937 {
2938 if (CvISXSUB (cb))
2939 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2940
2941 if (!CvROOT (cb))
2942 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2943 }
2944 }
2945
2946 Newz (0, coro, 1, struct coro);
2947 coro->args = newAV ();
2948 coro->flags = CF_NEW;
2949
2950 if (coro_first) coro_first->prev = coro;
2951 coro->next = coro_first;
2952 coro_first = coro;
2953
2954 coro->hv = hv = newHV ();
2955 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2956 mg->mg_flags |= MGf_DUP;
2957 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
2958
2959 if (argc > 0)
2960 {
2961 av_extend (coro->args, argc + is_coro - 1);
2962
2963 if (is_coro)
2964 {
2965 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2966 cb = (SV *)cv_coro_run;
2967 }
2968
2969 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2970
2971 for (i = 1; i < argc; i++)
2972 av_push (coro->args, newSVsv (argv [i]));
2973 }
2974
2975 return coro_sv;
2976}
1807 2977
1808MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2978MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1809 2979
1810PROTOTYPES: DISABLE 2980PROTOTYPES: DISABLE
1811 2981
1812BOOT: 2982BOOT:
1813{ 2983{
1814#ifdef USE_ITHREADS 2984#ifdef USE_ITHREADS
1815 MUTEX_INIT (&coro_lock);
1816# if CORO_PTHREAD 2985# if CORO_PTHREAD
1817 coro_thx = PERL_GET_CONTEXT; 2986 coro_thx = PERL_GET_CONTEXT;
1818# endif 2987# endif
1819#endif 2988#endif
1820 BOOT_PAGESIZE; 2989 BOOT_PAGESIZE;
1821 2990
2991 cctx_current = cctx_new_empty ();
2992
1822 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2993 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1823 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2994 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1824 2995
1825 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2996 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1826 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2997 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
1841 main_top_env = PL_top_env; 3012 main_top_env = PL_top_env;
1842 3013
1843 while (main_top_env->je_prev) 3014 while (main_top_env->je_prev)
1844 main_top_env = main_top_env->je_prev; 3015 main_top_env = main_top_env->je_prev;
1845 3016
3017 {
3018 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3019
3020 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3021 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3022
3023 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3024 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3025 }
3026
1846 coroapi.ver = CORO_API_VERSION; 3027 coroapi.ver = CORO_API_VERSION;
1847 coroapi.rev = CORO_API_REVISION; 3028 coroapi.rev = CORO_API_REVISION;
3029
1848 coroapi.transfer = api_transfer; 3030 coroapi.transfer = api_transfer;
3031
3032 coroapi.sv_state = SvSTATE_;
3033 coroapi.execute_slf = api_execute_slf;
3034 coroapi.prepare_nop = prepare_nop;
3035 coroapi.prepare_schedule = prepare_schedule;
3036 coroapi.prepare_cede = prepare_cede;
3037 coroapi.prepare_cede_notself = prepare_cede_notself;
1849 3038
1850 { 3039 {
1851 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3040 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1852 3041
1853 if (!svp) croak ("Time::HiRes is required"); 3042 if (!svp) croak ("Time::HiRes is required");
1854 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3043 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1855 3044
1856 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3045 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3046
3047 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3048 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
1857 } 3049 }
1858 3050
1859 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3051 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1860} 3052}
1861 3053
1862SV * 3054SV *
1863new (char *klass, ...) 3055new (SV *klass, ...)
3056 ALIAS:
3057 Coro::new = 1
1864 CODE: 3058 CODE:
1865{ 3059 RETVAL = coro_new (ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1866 struct coro *coro; 3060 OUTPUT:
1867 MAGIC *mg;
1868 HV *hv;
1869 int i;
1870
1871 Newz (0, coro, 1, struct coro);
1872 coro->args = newAV ();
1873 coro->flags = CF_NEW;
1874
1875 if (coro_first) coro_first->prev = coro;
1876 coro->next = coro_first;
1877 coro_first = coro;
1878
1879 coro->hv = hv = newHV ();
1880 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1881 mg->mg_flags |= MGf_DUP;
1882 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1883
1884 av_extend (coro->args, items - 1);
1885 for (i = 1; i < items; i++)
1886 av_push (coro->args, newSVsv (ST (i)));
1887}
1888 OUTPUT:
1889 RETVAL 3061 RETVAL
1890 3062
1891# these not obviously related functions are all rolled into the same xs
1892# function to increase chances that they all will call transfer with the same
1893# stack offset
1894void 3063void
1895_set_stacklevel (...) 3064transfer (...)
1896 ALIAS: 3065 PROTOTYPE: $$
1897 Coro::State::transfer = 1 3066 CODE:
1898 Coro::schedule = 2 3067 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1899 Coro::cede = 3
1900 Coro::cede_notself = 4
1901 CODE:
1902{
1903 struct transfer_args ta;
1904
1905 PUTBACK;
1906 switch (ix)
1907 {
1908 case 0:
1909 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
1910 break;
1911
1912 case 1:
1913 if (items != 2)
1914 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1915
1916 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1917 break;
1918
1919 case 2:
1920 prepare_schedule (aTHX_ &ta);
1921 break;
1922
1923 case 3:
1924 prepare_cede (aTHX_ &ta);
1925 break;
1926
1927 case 4:
1928 if (!prepare_cede_notself (aTHX_ &ta))
1929 XSRETURN_EMPTY;
1930
1931 break;
1932 }
1933 SPAGAIN;
1934
1935 BARRIER;
1936 PUTBACK;
1937 TRANSFER (ta, 0);
1938 SPAGAIN; /* might be the sp of a different coroutine now */
1939 /* be extra careful not to ever do anything after TRANSFER */
1940}
1941 3068
1942bool 3069bool
1943_destroy (SV *coro_sv) 3070_destroy (SV *coro_sv)
1944 CODE: 3071 CODE:
1945 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3072 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1950_exit (int code) 3077_exit (int code)
1951 PROTOTYPE: $ 3078 PROTOTYPE: $
1952 CODE: 3079 CODE:
1953 _exit (code); 3080 _exit (code);
1954 3081
3082SV *
3083clone (Coro::State coro)
3084 CODE:
3085{
3086#if CORO_CLONE
3087 struct coro *ncoro = coro_clone (aTHX_ coro);
3088 MAGIC *mg;
3089 /* TODO: too much duplication */
3090 ncoro->hv = newHV ();
3091 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3092 mg->mg_flags |= MGf_DUP;
3093 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3094#else
3095 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3096#endif
3097}
3098 OUTPUT:
3099 RETVAL
3100
1955int 3101int
1956cctx_stacksize (int new_stacksize = 0) 3102cctx_stacksize (int new_stacksize = 0)
3103 PROTOTYPE: ;$
1957 CODE: 3104 CODE:
1958 RETVAL = cctx_stacksize; 3105 RETVAL = cctx_stacksize;
1959 if (new_stacksize) 3106 if (new_stacksize)
1960 { 3107 {
1961 cctx_stacksize = new_stacksize; 3108 cctx_stacksize = new_stacksize;
… …
1964 OUTPUT: 3111 OUTPUT:
1965 RETVAL 3112 RETVAL
1966 3113
1967int 3114int
1968cctx_max_idle (int max_idle = 0) 3115cctx_max_idle (int max_idle = 0)
3116 PROTOTYPE: ;$
1969 CODE: 3117 CODE:
1970 RETVAL = cctx_max_idle; 3118 RETVAL = cctx_max_idle;
1971 if (max_idle > 1) 3119 if (max_idle > 1)
1972 cctx_max_idle = max_idle; 3120 cctx_max_idle = max_idle;
1973 OUTPUT: 3121 OUTPUT:
1974 RETVAL 3122 RETVAL
1975 3123
1976int 3124int
1977cctx_count () 3125cctx_count ()
3126 PROTOTYPE:
1978 CODE: 3127 CODE:
1979 RETVAL = cctx_count; 3128 RETVAL = cctx_count;
1980 OUTPUT: 3129 OUTPUT:
1981 RETVAL 3130 RETVAL
1982 3131
1983int 3132int
1984cctx_idle () 3133cctx_idle ()
3134 PROTOTYPE:
1985 CODE: 3135 CODE:
1986 RETVAL = cctx_idle; 3136 RETVAL = cctx_idle;
1987 OUTPUT: 3137 OUTPUT:
1988 RETVAL 3138 RETVAL
1989 3139
1990void 3140void
1991list () 3141list ()
3142 PROTOTYPE:
1992 PPCODE: 3143 PPCODE:
1993{ 3144{
1994 struct coro *coro; 3145 struct coro *coro;
1995 for (coro = coro_first; coro; coro = coro->next) 3146 for (coro = coro_first; coro; coro = coro->next)
1996 if (coro->hv) 3147 if (coro->hv)
… …
2003 eval = 1 3154 eval = 1
2004 CODE: 3155 CODE:
2005{ 3156{
2006 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3157 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2007 { 3158 {
2008 struct coro temp; 3159 struct coro *current = SvSTATE_current;
2009 3160
2010 if (!(coro->flags & CF_RUNNING)) 3161 if (current != coro)
2011 { 3162 {
2012 PUTBACK; 3163 PUTBACK;
2013 save_perl (aTHX_ &temp); 3164 save_perl (aTHX_ current);
2014 load_perl (aTHX_ coro); 3165 load_perl (aTHX_ coro);
3166 SPAGAIN;
2015 } 3167 }
2016 3168
2017 {
2018 dSP;
2019 ENTER;
2020 SAVETMPS;
2021 PUTBACK;
2022 PUSHSTACK; 3169 PUSHSTACK;
3170
2023 PUSHMARK (SP); 3171 PUSHMARK (SP);
3172 PUTBACK;
2024 3173
2025 if (ix) 3174 if (ix)
2026 eval_sv (coderef, 0); 3175 eval_sv (coderef, 0);
2027 else 3176 else
2028 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3177 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2029 3178
2030 POPSTACK; 3179 POPSTACK;
2031 SPAGAIN; 3180 SPAGAIN;
2032 FREETMPS;
2033 LEAVE;
2034 PUTBACK;
2035 }
2036 3181
2037 if (!(coro->flags & CF_RUNNING)) 3182 if (current != coro)
2038 { 3183 {
3184 PUTBACK;
2039 save_perl (aTHX_ coro); 3185 save_perl (aTHX_ coro);
2040 load_perl (aTHX_ &temp); 3186 load_perl (aTHX_ current);
2041 SPAGAIN; 3187 SPAGAIN;
2042 } 3188 }
2043 } 3189 }
2044} 3190}
2045 3191
… …
2049 ALIAS: 3195 ALIAS:
2050 is_ready = CF_READY 3196 is_ready = CF_READY
2051 is_running = CF_RUNNING 3197 is_running = CF_RUNNING
2052 is_new = CF_NEW 3198 is_new = CF_NEW
2053 is_destroyed = CF_DESTROYED 3199 is_destroyed = CF_DESTROYED
3200 is_suspended = CF_SUSPENDED
2054 CODE: 3201 CODE:
2055 RETVAL = boolSV (coro->flags & ix); 3202 RETVAL = boolSV (coro->flags & ix);
2056 OUTPUT: 3203 OUTPUT:
2057 RETVAL 3204 RETVAL
2058 3205
2059void 3206void
2060throw (Coro::State self, SV *throw = &PL_sv_undef) 3207throw (Coro::State self, SV *throw = &PL_sv_undef)
2061 PROTOTYPE: $;$ 3208 PROTOTYPE: $;$
2062 CODE: 3209 CODE:
3210{
3211 struct coro *current = SvSTATE_current;
3212 SV **throwp = self == current ? &CORO_THROW : &self->except;
2063 SvREFCNT_dec (self->throw); 3213 SvREFCNT_dec (*throwp);
3214 SvGETMAGIC (throw);
2064 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3215 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3216}
2065 3217
2066void 3218void
2067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3219api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3220 PROTOTYPE: $;$
3221 C_ARGS: aTHX_ coro, flags
2068 3222
2069SV * 3223SV *
2070has_cctx (Coro::State coro) 3224has_cctx (Coro::State coro)
2071 PROTOTYPE: $ 3225 PROTOTYPE: $
2072 CODE: 3226 CODE:
2073 RETVAL = boolSV (!!coro->cctx); 3227 /* maybe manage the running flag differently */
3228 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2074 OUTPUT: 3229 OUTPUT:
2075 RETVAL 3230 RETVAL
2076 3231
2077int 3232int
2078is_traced (Coro::State coro) 3233is_traced (Coro::State coro)
… …
2096 OUTPUT: 3251 OUTPUT:
2097 RETVAL 3252 RETVAL
2098 3253
2099void 3254void
2100force_cctx () 3255force_cctx ()
3256 PROTOTYPE:
2101 CODE: 3257 CODE:
2102 struct coro *coro = SvSTATE (coro_current);
2103 coro->cctx->idle_sp = 0; 3258 cctx_current->idle_sp = 0;
2104 3259
2105void 3260void
2106swap_defsv (Coro::State self) 3261swap_defsv (Coro::State self)
2107 PROTOTYPE: $ 3262 PROTOTYPE: $
2108 ALIAS: 3263 ALIAS:
2109 swap_defav = 1 3264 swap_defav = 1
2110 CODE: 3265 CODE:
2111 if (!self->slot) 3266 if (!self->slot)
2112 croak ("cannot swap state with coroutine that has no saved state"); 3267 croak ("cannot swap state with coroutine that has no saved state,");
2113 else 3268 else
2114 { 3269 {
2115 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3270 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2116 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3271 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2117 3272
2118 SV *tmp = *src; *src = *dst; *dst = tmp; 3273 SV *tmp = *src; *src = *dst; *dst = tmp;
2119 } 3274 }
2120 3275
3276void
3277cancel (Coro::State self)
3278 CODE:
3279 coro_state_destroy (aTHX_ self);
3280 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3281
3282
3283SV *
3284enable_times (int enabled = enable_times)
3285 CODE:
3286{
3287 RETVAL = boolSV (enable_times);
3288
3289 if (enabled != enable_times)
3290 {
3291 enable_times = enabled;
3292
3293 coro_times_update ();
3294 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3295 }
3296}
3297 OUTPUT:
3298 RETVAL
3299
3300void
3301times (Coro::State self)
3302 PPCODE:
3303{
3304 struct coro *current = SvSTATE (coro_current);
3305
3306 if (expect_false (current == self))
3307 {
3308 coro_times_update ();
3309 coro_times_add (SvSTATE (coro_current));
3310 }
3311
3312 EXTEND (SP, 2);
3313 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3314 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3315
3316 if (expect_false (current == self))
3317 coro_times_sub (SvSTATE (coro_current));
3318}
3319
2121MODULE = Coro::State PACKAGE = Coro 3320MODULE = Coro::State PACKAGE = Coro
2122 3321
2123BOOT: 3322BOOT:
2124{ 3323{
2125 int i;
2126
2127 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2128 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3324 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2129 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3325 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2130 3326 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3327 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2131 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3328 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2132 SvREADONLY_on (coro_current); 3329 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3330 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3331 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3332 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3333
3334 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3335 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3336 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3337 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2133 3338
2134 coro_stash = gv_stashpv ("Coro", TRUE); 3339 coro_stash = gv_stashpv ("Coro", TRUE);
2135 3340
2136 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3341 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2137 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3342 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2138 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3343 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2139 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3344 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2140 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3345 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2141 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3346 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2142
2143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2144 coro_ready[i] = newAV ();
2145 3347
2146 { 3348 {
2147 SV *sv = perl_get_sv ("Coro::API", TRUE); 3349 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2148 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2149 3350
2150 coroapi.schedule = api_schedule; 3351 coroapi.schedule = api_schedule;
3352 coroapi.schedule_to = api_schedule_to;
2151 coroapi.cede = api_cede; 3353 coroapi.cede = api_cede;
2152 coroapi.cede_notself = api_cede_notself; 3354 coroapi.cede_notself = api_cede_notself;
2153 coroapi.ready = api_ready; 3355 coroapi.ready = api_ready;
2154 coroapi.is_ready = api_is_ready; 3356 coroapi.is_ready = api_is_ready;
2155 coroapi.nready = &coro_nready; 3357 coroapi.nready = coro_nready;
2156 coroapi.current = coro_current; 3358 coroapi.current = coro_current;
2157 3359
2158 GCoroAPI = &coroapi; 3360 /*GCoroAPI = &coroapi;*/
2159 sv_setiv (sv, (IV)&coroapi); 3361 sv_setiv (sv, (IV)&coroapi);
2160 SvREADONLY_on (sv); 3362 SvREADONLY_on (sv);
2161 } 3363 }
2162} 3364}
3365
3366SV *
3367async (...)
3368 PROTOTYPE: &@
3369 CODE:
3370 RETVAL = coro_new (coro_stash, &ST (0), items, 1);
3371 api_ready (RETVAL);
3372 OUTPUT:
3373 RETVAL
3374
3375void
3376terminate (...)
3377 CODE:
3378 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3379
3380void
3381schedule (...)
3382 CODE:
3383 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3384
3385void
3386schedule_to (...)
3387 CODE:
3388 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3389
3390void
3391cede_to (...)
3392 CODE:
3393 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3394
3395void
3396cede (...)
3397 CODE:
3398 CORO_EXECUTE_SLF_XS (slf_init_cede);
3399
3400void
3401cede_notself (...)
3402 CODE:
3403 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2163 3404
2164void 3405void
2165_set_current (SV *current) 3406_set_current (SV *current)
2166 PROTOTYPE: $ 3407 PROTOTYPE: $
2167 CODE: 3408 CODE:
… …
2170 3411
2171void 3412void
2172_set_readyhook (SV *hook) 3413_set_readyhook (SV *hook)
2173 PROTOTYPE: $ 3414 PROTOTYPE: $
2174 CODE: 3415 CODE:
2175 LOCK;
2176 SvREFCNT_dec (coro_readyhook); 3416 SvREFCNT_dec (coro_readyhook);
3417 SvGETMAGIC (hook);
3418 if (SvOK (hook))
3419 {
2177 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3420 coro_readyhook = newSVsv (hook);
2178 UNLOCK; 3421 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3422 }
3423 else
3424 {
3425 coro_readyhook = 0;
3426 CORO_READYHOOK = 0;
3427 }
2179 3428
2180int 3429int
2181prio (Coro::State coro, int newprio = 0) 3430prio (Coro::State coro, int newprio = 0)
3431 PROTOTYPE: $;$
2182 ALIAS: 3432 ALIAS:
2183 nice = 1 3433 nice = 1
2184 CODE: 3434 CODE:
2185{ 3435{
2186 RETVAL = coro->prio; 3436 RETVAL = coro->prio;
… …
2188 if (items > 1) 3438 if (items > 1)
2189 { 3439 {
2190 if (ix) 3440 if (ix)
2191 newprio = coro->prio - newprio; 3441 newprio = coro->prio - newprio;
2192 3442
2193 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3443 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2194 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3444 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2195 3445
2196 coro->prio = newprio; 3446 coro->prio = newprio;
2197 } 3447 }
2198} 3448}
2199 OUTPUT: 3449 OUTPUT:
… …
2201 3451
2202SV * 3452SV *
2203ready (SV *self) 3453ready (SV *self)
2204 PROTOTYPE: $ 3454 PROTOTYPE: $
2205 CODE: 3455 CODE:
2206 RETVAL = boolSV (api_ready (self)); 3456 RETVAL = boolSV (api_ready (aTHX_ self));
2207 OUTPUT: 3457 OUTPUT:
2208 RETVAL 3458 RETVAL
2209 3459
2210int 3460int
2211nready (...) 3461nready (...)
… …
2213 CODE: 3463 CODE:
2214 RETVAL = coro_nready; 3464 RETVAL = coro_nready;
2215 OUTPUT: 3465 OUTPUT:
2216 RETVAL 3466 RETVAL
2217 3467
2218# for async_pool speedup
2219void 3468void
2220_pool_1 (SV *cb) 3469suspend (Coro::State self)
3470 PROTOTYPE: $
2221 CODE: 3471 CODE:
2222{ 3472 self->flags |= CF_SUSPENDED;
2223 struct coro *coro = SvSTATE (coro_current);
2224 HV *hv = (HV *)SvRV (coro_current);
2225 AV *defav = GvAV (PL_defgv);
2226 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2227 AV *invoke_av;
2228 int i, len;
2229 3473
2230 if (!invoke) 3474void
3475resume (Coro::State self)
3476 PROTOTYPE: $
3477 CODE:
3478 self->flags &= ~CF_SUSPENDED;
3479
3480void
3481_pool_handler (...)
3482 CODE:
3483 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3484
3485void
3486async_pool (SV *cv, ...)
3487 PROTOTYPE: &@
3488 PPCODE:
3489{
3490 HV *hv = (HV *)av_pop (av_async_pool);
3491 AV *av = newAV ();
3492 SV *cb = ST (0);
3493 int i;
3494
3495 av_extend (av, items - 2);
3496 for (i = 1; i < items; ++i)
3497 av_push (av, SvREFCNT_inc_NN (ST (i)));
3498
3499 if ((SV *)hv == &PL_sv_undef)
2231 { 3500 {
2232 SV *old = PL_diehook; 3501 PUSHMARK (SP);
2233 PL_diehook = 0; 3502 EXTEND (SP, 2);
2234 SvREFCNT_dec (old); 3503 PUSHs (sv_Coro);
2235 croak ("\3async_pool terminate\2\n"); 3504 PUSHs ((SV *)cv_pool_handler);
3505 PUTBACK;
3506 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3507 SPAGAIN;
3508
3509 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2236 } 3510 }
2237 3511
2238 SvREFCNT_dec (coro->saved_deffh);
2239 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2240
2241 hv_store (hv, "desc", sizeof ("desc") - 1,
2242 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2243
2244 invoke_av = (AV *)SvRV (invoke);
2245 len = av_len (invoke_av);
2246
2247 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2248
2249 if (len > 0)
2250 { 3512 {
2251 av_fill (defav, len - 1); 3513 struct coro *coro = SvSTATE_hv (hv);
2252 for (i = 0; i < len; ++i) 3514
2253 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3515 assert (!coro->invoke_cb);
3516 assert (!coro->invoke_av);
3517 coro->invoke_cb = SvREFCNT_inc (cb);
3518 coro->invoke_av = av;
2254 } 3519 }
2255 3520
3521 api_ready (aTHX_ (SV *)hv);
3522
3523 if (GIMME_V != G_VOID)
3524 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3525 else
2256 SvREFCNT_dec (invoke); 3526 SvREFCNT_dec (hv);
2257} 3527}
2258 3528
2259void 3529SV *
2260_pool_2 (SV *cb) 3530rouse_cb ()
3531 PROTOTYPE:
2261 CODE: 3532 CODE:
2262{ 3533 RETVAL = coro_new_rouse_cb (aTHX);
2263 struct coro *coro = SvSTATE (coro_current);
2264
2265 sv_setsv (cb, &PL_sv_undef);
2266
2267 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2268 coro->saved_deffh = 0;
2269
2270 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2271 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2272 {
2273 SV *old = PL_diehook;
2274 PL_diehook = 0;
2275 SvREFCNT_dec (old);
2276 croak ("\3async_pool terminate\2\n");
2277 }
2278
2279 av_clear (GvAV (PL_defgv));
2280 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2281 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2282
2283 coro->prio = 0;
2284
2285 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2286 api_trace (coro_current, 0);
2287
2288 av_push (av_async_pool, newSVsv (coro_current));
2289}
2290
2291#if 0
2292
2293void
2294_generator_call (...)
2295 PROTOTYPE: @
2296 PPCODE:
2297 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2298 xxxx
2299 abort ();
2300
2301SV *
2302gensub (SV *sub, ...)
2303 PROTOTYPE: &;@
2304 CODE:
2305{
2306 struct coro *coro;
2307 MAGIC *mg;
2308 CV *xcv;
2309 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2310 int i;
2311
2312 CvGV (ncv) = CvGV (cv);
2313 CvFILE (ncv) = CvFILE (cv);
2314
2315 Newz (0, coro, 1, struct coro);
2316 coro->args = newAV ();
2317 coro->flags = CF_NEW;
2318
2319 av_extend (coro->args, items - 1);
2320 for (i = 1; i < items; i++)
2321 av_push (coro->args, newSVsv (ST (i)));
2322
2323 CvISXSUB_on (ncv);
2324 CvXSUBANY (ncv).any_ptr = (void *)coro;
2325
2326 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2327
2328 CvXSUB (ncv) = CvXSUB (xcv);
2329 CvANON_on (ncv);
2330
2331 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2332 RETVAL = newRV_noinc ((SV *)ncv);
2333}
2334 OUTPUT: 3534 OUTPUT:
2335 RETVAL 3535 RETVAL
2336 3536
2337#endif
2338
2339
2340MODULE = Coro::State PACKAGE = Coro::AIO
2341
2342void 3537void
2343_get_state (SV *self) 3538rouse_wait (...)
3539 PROTOTYPE: ;$
2344 PPCODE: 3540 PPCODE:
2345{ 3541 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2346 AV *defav = GvAV (PL_defgv);
2347 AV *av = newAV ();
2348 int i;
2349 SV *data_sv = newSV (sizeof (struct io_state));
2350 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2351 SvCUR_set (data_sv, sizeof (struct io_state));
2352 SvPOK_only (data_sv);
2353
2354 data->errorno = errno;
2355 data->laststype = PL_laststype;
2356 data->laststatval = PL_laststatval;
2357 data->statcache = PL_statcache;
2358
2359 av_extend (av, AvFILLp (defav) + 1 + 1);
2360
2361 for (i = 0; i <= AvFILLp (defav); ++i)
2362 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2363
2364 av_push (av, data_sv);
2365
2366 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2367
2368 api_ready (self);
2369}
2370 3542
2371void 3543void
2372_set_state (SV *state) 3544on_enter (SV *block)
3545 ALIAS:
3546 on_leave = 1
2373 PROTOTYPE: $ 3547 PROTOTYPE: &
3548 CODE:
3549{
3550 struct coro *coro = SvSTATE_current;
3551 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3552
3553 block = s_get_cv_croak (block);
3554
3555 if (!*avp)
3556 *avp = newAV ();
3557
3558 av_push (*avp, SvREFCNT_inc (block));
3559
3560 if (!ix)
3561 on_enterleave_call (aTHX_ block);
3562
3563 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3564 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3565 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3566}
3567
3568
3569MODULE = Coro::State PACKAGE = PerlIO::cede
3570
3571BOOT:
3572 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3573
3574
3575MODULE = Coro::State PACKAGE = Coro::Semaphore
3576
3577SV *
3578new (SV *klass, SV *count = 0)
3579 CODE:
3580{
3581 int semcnt = 1;
3582
3583 if (count)
3584 {
3585 SvGETMAGIC (count);
3586
3587 if (SvOK (count))
3588 semcnt = SvIV (count);
3589 }
3590
3591 RETVAL = sv_bless (
3592 coro_waitarray_new (aTHX_ semcnt),
3593 GvSTASH (CvGV (cv))
3594 );
3595}
3596 OUTPUT:
3597 RETVAL
3598
3599# helper for Coro::Channel and others
3600SV *
3601_alloc (int count)
3602 CODE:
3603 RETVAL = coro_waitarray_new (aTHX_ count);
3604 OUTPUT:
3605 RETVAL
3606
3607SV *
3608count (SV *self)
3609 CODE:
3610 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3611 OUTPUT:
3612 RETVAL
3613
3614void
3615up (SV *self, int adjust = 1)
3616 ALIAS:
3617 adjust = 1
3618 CODE:
3619 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3620
3621void
3622down (...)
3623 CODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3625
3626void
3627wait (...)
3628 CODE:
3629 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3630
3631void
3632try (SV *self)
3633 PPCODE:
3634{
3635 AV *av = (AV *)SvRV (self);
3636 SV *count_sv = AvARRAY (av)[0];
3637 IV count = SvIVX (count_sv);
3638
3639 if (count > 0)
3640 {
3641 --count;
3642 SvIVX (count_sv) = count;
3643 XSRETURN_YES;
3644 }
3645 else
3646 XSRETURN_NO;
3647}
3648
3649void
3650waiters (SV *self)
3651 PPCODE:
3652{
3653 AV *av = (AV *)SvRV (self);
3654 int wcount = AvFILLp (av) + 1 - 1;
3655
3656 if (GIMME_V == G_SCALAR)
3657 XPUSHs (sv_2mortal (newSViv (wcount)));
3658 else
3659 {
3660 int i;
3661 EXTEND (SP, wcount);
3662 for (i = 1; i <= wcount; ++i)
3663 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3664 }
3665}
3666
3667MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3668
3669void
3670_may_delete (SV *sem, int count, int extra_refs)
2374 PPCODE: 3671 PPCODE:
2375{ 3672{
2376 AV *av = (AV *)SvRV (state); 3673 AV *av = (AV *)SvRV (sem);
2377 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2378 int i;
2379 3674
2380 errno = data->errorno; 3675 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2381 PL_laststype = data->laststype; 3676 && AvFILLp (av) == 0 /* no waiters, just count */
2382 PL_laststatval = data->laststatval; 3677 && SvIV (AvARRAY (av)[0]) == count)
2383 PL_statcache = data->statcache; 3678 XSRETURN_YES;
2384 3679
3680 XSRETURN_NO;
3681}
3682
3683MODULE = Coro::State PACKAGE = Coro::Signal
3684
3685SV *
3686new (SV *klass)
3687 CODE:
3688 RETVAL = sv_bless (
3689 coro_waitarray_new (aTHX_ 0),
3690 GvSTASH (CvGV (cv))
3691 );
3692 OUTPUT:
3693 RETVAL
3694
3695void
3696wait (...)
3697 CODE:
3698 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3699
3700void
3701broadcast (SV *self)
3702 CODE:
3703{
3704 AV *av = (AV *)SvRV (self);
3705 coro_signal_wake (aTHX_ av, AvFILLp (av));
3706}
3707
3708void
3709send (SV *self)
3710 CODE:
3711{
3712 AV *av = (AV *)SvRV (self);
3713
2385 EXTEND (SP, AvFILLp (av)); 3714 if (AvFILLp (av))
2386 for (i = 0; i < AvFILLp (av); ++i) 3715 coro_signal_wake (aTHX_ av, 1);
2387 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3716 else
3717 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2388} 3718}
3719
3720IV
3721awaited (SV *self)
3722 CODE:
3723 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3724 OUTPUT:
3725 RETVAL
2389 3726
2390 3727
2391MODULE = Coro::State PACKAGE = Coro::AnyEvent 3728MODULE = Coro::State PACKAGE = Coro::AnyEvent
2392 3729
2393BOOT: 3730BOOT:
2394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3731 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2395 3732
2396SV * 3733void
2397_schedule (...) 3734_schedule (...)
2398 PROTOTYPE: @
2399 CODE: 3735 CODE:
2400{ 3736{
2401 static int incede; 3737 static int incede;
2402 3738
2403 api_cede_notself (); 3739 api_cede_notself (aTHX);
2404 3740
2405 ++incede; 3741 ++incede;
2406 while (coro_nready >= incede && api_cede ()) 3742 while (coro_nready >= incede && api_cede (aTHX))
2407 ; 3743 ;
2408 3744
2409 sv_setsv (sv_activity, &PL_sv_undef); 3745 sv_setsv (sv_activity, &PL_sv_undef);
2410 if (coro_nready >= incede) 3746 if (coro_nready >= incede)
2411 { 3747 {
2412 PUSHMARK (SP); 3748 PUSHMARK (SP);
2413 PUTBACK; 3749 PUTBACK;
2414 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3750 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2415 SPAGAIN;
2416 } 3751 }
2417 3752
2418 --incede; 3753 --incede;
2419} 3754}
2420 3755
2421 3756
2422MODULE = Coro::State PACKAGE = PerlIO::cede 3757MODULE = Coro::State PACKAGE = Coro::AIO
2423 3758
2424BOOT: 3759void
2425 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3760_register (char *target, char *proto, SV *req)
3761 CODE:
3762{
3763 SV *req_cv = s_get_cv_croak (req);
3764 /* newXSproto doesn't return the CV on 5.8 */
3765 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3766 sv_setpv ((SV *)slf_cv, proto);
3767 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3768}
3769
3770MODULE = Coro::State PACKAGE = Coro::Select
3771
3772void
3773patch_pp_sselect ()
3774 CODE:
3775 if (!coro_old_pp_sselect)
3776 {
3777 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3778 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3779 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3780 }
3781
3782void
3783unpatch_pp_sselect ()
3784 CODE:
3785 if (coro_old_pp_sselect)
3786 {
3787 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3788 coro_old_pp_sselect = 0;
3789 }
3790
3791

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