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Comparing Coro/Coro/State.xs (file contents):
Revision 1.254 by root, Fri Nov 7 20:27:47 2008 UTC vs.
Revision 1.366 by root, Tue Jul 21 03:39:58 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
147static perl_mutex coro_lock; 100# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) 101static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0) 102# endif
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 103#endif
154 104
155/* helper storage struct for Coro::AIO */ 105#ifdef __linux
156struct io_state 106# include <time.h> /* for timespec */
157{ 107# include <syscall.h> /* for SYS_* */
158 AV *res; 108# ifdef SYS_clock_gettime
159 int errorno; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
160 I32 laststype; 110# define CORO_CLOCK_MONOTONIC 1
161 int laststatval; 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
162 Stat_t statcache; 112# endif
163}; 113#endif
164 114
165static 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);
166 121
167static U32 cctx_gen; 122static U32 cctx_gen;
168static size_t cctx_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
169static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
170static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
171static JMPENV *main_top_env; 126static JMPENV *main_top_env;
172static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174 129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
133
175static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
176static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
177static SV *rv_diehook; 136static SV *rv_diehook;
178static SV *rv_warnhook; 137static SV *rv_warnhook;
179static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
180 139
181/* async_pool helper stuff */ 140/* async_pool helper stuff */
182static SV *sv_pool_rss; 141static SV *sv_pool_rss;
183static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
184static 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;
185 148
186/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
187static 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;
188 157
189static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
190static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
191 160
192enum { 161enum {
… …
197 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
198 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
199}; 168};
200 169
201/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
202typedef struct coro_cctx { 171typedef struct coro_cctx
172{
203 struct coro_cctx *next; 173 struct coro_cctx *next;
204 174
205 /* the stack */ 175 /* the stack */
206 void *sptr; 176 void *sptr;
207 size_t ssize; 177 size_t ssize;
… …
217 int valgrind_id; 187 int valgrind_id;
218#endif 188#endif
219 unsigned char flags; 189 unsigned char flags;
220} coro_cctx; 190} coro_cctx;
221 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
222enum { 196enum {
223 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
224 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
225 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
226 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 */
227}; 202};
228 203
229/* 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 */
230typedef struct { 205typedef struct
206{
231 SV *defsv; 207 SV *defsv;
232 AV *defav; 208 AV *defav;
233 SV *errsv; 209 SV *errsv;
234 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
235#define VAR(name,type) type name; 212#define VAR(name,type) type name;
236# include "state.h" 213# include "state.h"
237#undef VAR 214#undef VAR
238} perl_slots; 215} perl_slots;
239 216
240#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))
241 218
242/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
243struct coro { 220struct coro {
244 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 222 coro_cctx *cctx;
246 223
247 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 229 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
250 231
232 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
254 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);
255 238
256 /* statistics */ 239 /* statistics */
257 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
258 241
259 /* coro process data */ 242 /* coro process data */
260 int prio; 243 int prio;
261 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
262 246
263 /* async_pool */ 247 /* async_pool */
264 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;
265 258
266 /* linked list */ 259 /* linked list */
267 struct coro *next, *prev; 260 struct coro *next, *prev;
268}; 261};
269 262
270typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
271typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
272 265
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
273/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
274 272
275#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
276#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
277#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
278#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
279#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
280#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
281 279
282/* for Coro.pm */ 280/* for Coro.pm */
283static SV *coro_current; 281static SV *coro_current;
284static SV *coro_readyhook; 282static SV *coro_readyhook;
285static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
286static int coro_nready; 284static CV *cv_coro_run, *cv_coro_terminate;
287static 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}
288 307
289/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
290 309
291static SV * 310static SV *
292coro_get_sv (pTHX_ const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
… …
316 get_hv (name, create); 335 get_hv (name, create);
317#endif 336#endif
318 return get_hv (name, create); 337 return get_hv (name, create);
319} 338}
320 339
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
321static AV * 439static AV *
322coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
323{ 441{
324 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
326 444
327 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
333#endif 451#endif
334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
335 --AvFILLp (padlist); 453 --AvFILLp (padlist);
336 454
337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
338 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
339 457
340 return newpadlist; 458 return newpadlist;
341} 459}
342 460
343static void 461static void
344free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
345{ 463{
346 /* may be during global destruction */ 464 /* may be during global destruction */
347 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
348 { 466 {
349 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
350 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
351 { 470 {
352 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
353 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
354 { 473 I32 j = AvFILLp (av);
355 SV *sv; 474
356 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
357 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
358
359 SvREFCNT_dec (*svp);
360 }
361 } 480 }
362 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
363 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
364 } 486 }
365} 487}
366 488
367static int 489static int
368coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
369{ 491{
370 AV *padlist; 492 AV *padlist;
371 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;
372 498
373 /* casting is fun. */ 499 /* casting is fun. */
374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
375 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
376 502
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 504
379 return 0; 505 return 0;
380} 506}
381
382#define CORO_MAGIC_type_cv PERL_MAGIC_ext
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 507
385static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 509 0, 0, 0, 0,
387 coro_cv_free 510 coro_cv_free
388}; 511};
389
390#define CORO_MAGIC(sv, type) \
391 SvMAGIC (sv) \
392 ? SvMAGIC (sv)->mg_type == type \
393 ? SvMAGIC (sv) \
394 : mg_find (sv, type) \
395 : 0
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
399
400static struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425 512
426/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
427static void 514static void
428get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
429{ 516{
… …
435 else 522 else
436 { 523 {
437#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
438 /* this is probably cleaner? but also slower! */ 525 /* this is probably cleaner? but also slower! */
439 /* in practise, it seems to be less stable */ 526 /* in practise, it seems to be less stable */
440 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
441 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
442 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
443 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
444#else 531#else
445 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
446#endif 533#endif
447 } 534 }
448} 535}
449 536
450static void 537static void
… …
457 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);
458 545
459 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
460 547
461 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
462 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
463 550
464 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
465} 552}
466 553
467/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
468 558
469static void 559static void
470load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
471{ 561{
472 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
473 c->slot = 0; 563 c->slot = 0;
474 564
475 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
476 566
477 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
478 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
479 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
480 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
481 572
482 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
483 # include "state.h" 574 # include "state.h"
484 #undef VAR 575 #undef VAR
485 576
… …
496 CvPADLIST (cv) = (AV *)POPs; 587 CvPADLIST (cv) = (AV *)POPs;
497 } 588 }
498 589
499 PUTBACK; 590 PUTBACK;
500 } 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 }
501} 611}
502 612
503static void 613static void
504save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
505{ 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
506 { 635 {
507 dSP; 636 dSP;
508 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
509 PERL_CONTEXT *ccstk = cxstack; 638 PERL_CONTEXT *ccstk = cxstack;
510 PERL_SI *top_si = PL_curstackinfo; 639 PERL_SI *top_si = PL_curstackinfo;
… …
520 { 649 {
521 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
522 { 651 {
523 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
524 653
525 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))
526 { 655 {
527 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
528 657
529 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
530 { 659 {
… …
554 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
555 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
556 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
557 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
558 { 687 {
559 int i; 688 unsigned int i;
560 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
561 CXINC; 690 CXINC;
562 } 691 }
563 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
564 693
565 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
566 695
567 { 696 {
568 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
569 698
570 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
571 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
572 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
573 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
574 704
575 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
576 # include "state.h" 706 # include "state.h"
577 #undef VAR 707 #undef VAR
578 } 708 }
579} 709}
580 710
581/* 711/*
582 * allocate various perl stacks. This is an exact copy 712 * allocate various perl stacks. This is almost an exact copy
583 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
584 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
585 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
586 */ 716 */
587#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
588# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
589#else 719#else
590static void 720static void
591coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
592{ 722{
593 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
656#if !PERL_VERSION_ATLEAST (5,10,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
657 Safefree (PL_retstack); 787 Safefree (PL_retstack);
658#endif 788#endif
659} 789}
660 790
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
661static size_t 800static size_t
662coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
663{ 802{
664 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
665 804
666 if (coro->mainstack) 805 if (coro->mainstack)
667 { 806 {
668 perl_slots tmp_slot;
669 perl_slots *slot;
670
671 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
672 { 808 {
673 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
674 810 CORO_RSS;
675 #define VAR(name,type) slot->name = PL_ ## name;
676 # include "state.h"
677 #undef VAR 811 #undef SYM
678 } 812 }
679 else 813 else
680 slot = coro->slot;
681
682 if (slot)
683 { 814 {
684 rss += sizeof (slot->curstackinfo); 815 #define SYM(sym) coro->slot->sym
685 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 816 CORO_RSS;
686 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 817 #undef SYM
687 rss += slot->tmps_max * sizeof (SV *);
688 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
689 rss += slot->scopestack_max * sizeof (I32);
690 rss += slot->savestack_max * sizeof (ANY);
691
692#if !PERL_VERSION_ATLEAST (5,10,0)
693 rss += slot->retstack_max * sizeof (OP *);
694#endif
695 } 818 }
696 } 819 }
697 820
698 return rss; 821 return rss;
699} 822}
… …
712#endif 835#endif
713 836
714/* 837/*
715 * This overrides the default magic get method of %SIG elements. 838 * This overrides the default magic get method of %SIG elements.
716 * 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
717 * 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
718 * readback here. 841 * readback here.
719 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
720 * not expecting this to actually change the hook. This is a potential problem
721 * when a schedule happens then, but we ignore this.
722 */ 842 */
723static int 843static int
724coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
725{ 845{
726 const char *s = MgPV_nolen_const (mg); 846 const char *s = MgPV_nolen_const (mg);
… …
779 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
780 900
781 if (svp) 901 if (svp)
782 { 902 {
783 SV *old = *svp; 903 SV *old = *svp;
784 *svp = newSVsv (sv); 904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
785 SvREFCNT_dec (old); 905 SvREFCNT_dec (old);
786 return 0; 906 return 0;
787 } 907 }
788 } 908 }
789 909
790 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
791} 911}
792 912
793static 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 */
794coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
795{ 936{
796 /* 937 /*
797 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
798 */ 939 */
… …
800 941
801 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
802 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
803 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
804 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
805 PL_curpm = 0; 949 PL_curpm = 0;
806 PL_curpad = 0; 950 PL_curpad = 0;
807 PL_localizing = 0; 951 PL_localizing = 0;
808 PL_dirty = 0; 952 PL_dirty = 0;
809 PL_restartop = 0; 953 PL_restartop = 0;
810#if PERL_VERSION_ATLEAST (5,10,0) 954#if PERL_VERSION_ATLEAST (5,10,0)
811 PL_parser = 0; 955 PL_parser = 0;
812#endif 956#endif
957 PL_hints = 0;
813 958
814 /* recreate the die/warn hooks */ 959 /* recreate the die/warn hooks */
815 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 );
816 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);
817 962
818 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
819 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
820 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
821 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;
822 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
823 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
824 970
825 { 971 {
826 dSP; 972 dSP;
827 LOGOP myop; 973 UNOP myop;
828 974
829 Zero (&myop, 1, LOGOP); 975 Zero (&myop, 1, UNOP);
830 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
831 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
832 979
833 PUSHMARK (SP); 980 PUSHMARK (SP);
834 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
835 PUTBACK; 982 PUTBACK;
836 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
837 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
838 SPAGAIN;
839 } 985 }
840 986
841 /* 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
842 * 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.
843 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
844 * so we ENTER here for symmetry
845 */ 989 */
846 ENTER; 990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
847} 991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
848 992
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
849static void 1011static void
850coro_destruct (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
851{ 1013{
852 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
853 { 1015 {
854 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
855 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
863 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
864 1026
865 /* unwind main stack */ 1027 /* unwind main stack */
866 dounwind (-1); 1028 dounwind (-1);
867 } 1029 }
1030}
868 1031
869 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
870 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
871 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
872 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
873 SvREFCNT_dec (PL_rs);
874 SvREFCNT_dec (GvSV (irsgv));
875 1036
876 SvREFCNT_dec (PL_diehook);
877 SvREFCNT_dec (PL_warnhook);
878 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
879 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
880 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
881 1071 SvREFCNT_dec (coro->invoke_cb);
882 coro_destruct_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
883} 1074}
884 1075
885static void 1076INLINE void
886free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
887{ 1078{
888 if (expect_true (coro_mortal)) 1079 if (expect_true (coro_mortal))
889 { 1080 {
890 SvREFCNT_dec (coro_mortal); 1081 SvREFCNT_dec (coro_mortal);
… …
895static int 1086static int
896runops_trace (pTHX) 1087runops_trace (pTHX)
897{ 1088{
898 COP *oldcop = 0; 1089 COP *oldcop = 0;
899 int oldcxix = -2; 1090 int oldcxix = -2;
900 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
901 coro_cctx *cctx = coro->cctx;
902 1091
903 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
904 { 1093 {
905 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
906 1095
907 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
908 { 1097 {
909 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)
910 { 1099 {
911 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
912 SV **bot, **top; 1101 SV **bot, **top;
913 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
914 SV **cb; 1103 SV **cb;
… …
951 1140
952 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
953 { 1142 {
954 SV **cb; 1143 SV **cb;
955 1144
956 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
957 { 1146 {
958 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
959 1148
960 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
961 { 1150 {
962 runops_proc_t old_runops = PL_runops;
963 dSP; 1151 dSP;
964 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
965 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
966 1154
967 if (isGV (gv)) 1155 if (isGV (gv))
… …
972 SAVETMPS; 1160 SAVETMPS;
973 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
974 PUSHMARK (SP); 1162 PUSHMARK (SP);
975 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
976 PUSHs (fullname); 1164 PUSHs (fullname);
977 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);
978 PUTBACK; 1166 PUTBACK;
979 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);
980 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);
981 SPAGAIN; 1169 SPAGAIN;
982 FREETMPS; 1170 FREETMPS;
… …
985 } 1173 }
986 1174
987 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
988 } 1176 }
989 1177
990 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
991 { 1179 {
992 dSP; 1180 dSP;
993 1181
994 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
995 ENTER; 1183 ENTER;
… …
1014 1202
1015 TAINT_NOT; 1203 TAINT_NOT;
1016 return 0; 1204 return 0;
1017} 1205}
1018 1206
1019/* inject a fake call to Coro::State::_cctx_init into the execution */ 1207static struct CoroSLF cctx_ssl_frame;
1020/* _cctx_init should be careful, as it could be called at almost any time */ 1208
1021/* during execution of a perl program */ 1209static void
1210slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1211{
1212 ta->prev = 0;
1213}
1214
1215static int
1216slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1217{
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 */
1022static void NOINLINE 1224static void NOINLINE
1023cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
1024{ 1226{
1025 dSP;
1026 LOGOP myop;
1027
1028 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
1029 1228
1030 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
1031 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
1032 1231
1033 Zero (&myop, 1, LOGOP); 1232 /* we already must be executing an SLF op, there is no other valid way
1034 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
1035 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));
1036 1236
1037 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1038 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
1039 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1239
1040 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
1041 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
1042 PL_op = (OP *)&myop; 1242}
1043 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1243
1044 SPAGAIN; 1244/* the tail of transfer: execute stuff we can only do after a transfer */
1245INLINE void
1246transfer_tail (pTHX)
1247{
1248 free_coro_mortal (aTHX);
1045} 1249}
1046 1250
1047/* 1251/*
1048 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
1049 */ 1253 */
1050static void 1254static void
1051cctx_run (void *arg) 1255cctx_run (void *arg)
1052{ 1256{
1257#ifdef USE_ITHREADS
1258# if CORO_PTHREAD
1259 PERL_SET_CONTEXT (coro_thx);
1260# endif
1261#endif
1262 {
1053 dTHX; 1263 dTHX;
1054 1264
1055 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1265 /* normally we would need to skip the entersub here */
1056 UNLOCK; 1266 /* not doing so will re-execute it, which is exactly what we want */
1057
1058 /* we now skip the entersub that lead to transfer() */
1059 PL_op = PL_op->op_next; 1267 /* PL_nop = PL_nop->op_next */
1060 1268
1061 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
1062 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
1063 1271
1272 /* cctx_run is the alternative tail of transfer() */
1273 transfer_tail (aTHX);
1274
1064 /* 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 */
1065 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
1066 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
1067
1068 /* 1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these
1281 */
1282
1283 /*
1069 * If perl-run returns we assume exit() was being called or the coro 1284 * If perl-run returns we assume exit() was being called or the coro
1070 * fell off the end, which seems to be the only valid (non-bug) 1285 * fell off the end, which seems to be the only valid (non-bug)
1071 * reason for perl_run to return. We try to exit by jumping to the 1286 * reason for perl_run to return. We try to exit by jumping to the
1072 * bootstrap-time "top" top_env, as we cannot restore the "main" 1287 * bootstrap-time "top" top_env, as we cannot restore the "main"
1073 * coroutine as Coro has no such concept 1288 * coroutine as Coro has no such concept.
1289 * This actually isn't valid with the pthread backend, but OSes requiring
1290 * that backend are too broken to do it in a standards-compliant way.
1074 */ 1291 */
1075 PL_top_env = main_top_env; 1292 PL_top_env = main_top_env;
1076 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1293 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1294 }
1077} 1295}
1078 1296
1079static coro_cctx * 1297static coro_cctx *
1080cctx_new () 1298cctx_new ()
1081{ 1299{
1082 coro_cctx *cctx; 1300 coro_cctx *cctx;
1301
1302 ++cctx_count;
1303 New (0, cctx, 1, coro_cctx);
1304
1305 cctx->gen = cctx_gen;
1306 cctx->flags = 0;
1307 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1308
1309 return cctx;
1310}
1311
1312/* create a new cctx only suitable as source */
1313static coro_cctx *
1314cctx_new_empty ()
1315{
1316 coro_cctx *cctx = cctx_new ();
1317
1318 cctx->sptr = 0;
1319 coro_create (&cctx->cctx, 0, 0, 0, 0);
1320
1321 return cctx;
1322}
1323
1324/* create a new cctx suitable as destination/running a perl interpreter */
1325static coro_cctx *
1326cctx_new_run ()
1327{
1328 coro_cctx *cctx = cctx_new ();
1083 void *stack_start; 1329 void *stack_start;
1084 size_t stack_size; 1330 size_t stack_size;
1085
1086 ++cctx_count;
1087 Newz (0, cctx, 1, coro_cctx);
1088
1089 cctx->gen = cctx_gen;
1090 1331
1091#if HAVE_MMAP 1332#if HAVE_MMAP
1092 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1333 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1093 /* mmap supposedly does allocate-on-write for us */ 1334 /* mmap supposedly does allocate-on-write for us */
1094 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1335 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1095 1336
1096 if (cctx->sptr != (void *)-1) 1337 if (cctx->sptr != (void *)-1)
1097 { 1338 {
1098# if CORO_STACKGUARD 1339 #if CORO_STACKGUARD
1099 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1340 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1100# endif 1341 #endif
1101 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1342 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1102 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1343 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1103 cctx->flags |= CC_MAPPED; 1344 cctx->flags |= CC_MAPPED;
1104 } 1345 }
1105 else 1346 else
1106#endif 1347#endif
1107 { 1348 {
1108 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1349 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1109 New (0, cctx->sptr, cctx_stacksize, long); 1350 New (0, cctx->sptr, cctx_stacksize, long);
1110 1351
1111 if (!cctx->sptr) 1352 if (!cctx->sptr)
1112 { 1353 {
1113 perror ("FATAL: unable to allocate stack for coroutine"); 1354 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1114 _exit (EXIT_FAILURE); 1355 _exit (EXIT_FAILURE);
1115 } 1356 }
1116 1357
1117 stack_start = cctx->sptr; 1358 stack_start = cctx->sptr;
1118 stack_size = cctx->ssize; 1359 stack_size = cctx->ssize;
1119 } 1360 }
1120 1361
1121 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1362 #if CORO_USE_VALGRIND
1363 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1364 #endif
1365
1122 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1366 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1123 1367
1124 return cctx; 1368 return cctx;
1125} 1369}
1126 1370
… …
1128cctx_destroy (coro_cctx *cctx) 1372cctx_destroy (coro_cctx *cctx)
1129{ 1373{
1130 if (!cctx) 1374 if (!cctx)
1131 return; 1375 return;
1132 1376
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1378
1133 --cctx_count; 1379 --cctx_count;
1134 coro_destroy (&cctx->cctx); 1380 coro_destroy (&cctx->cctx);
1135 1381
1136 /* coro_transfer creates new, empty cctx's */ 1382 /* coro_transfer creates new, empty cctx's */
1137 if (cctx->sptr) 1383 if (cctx->sptr)
1138 { 1384 {
1139#if CORO_USE_VALGRIND 1385 #if CORO_USE_VALGRIND
1140 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1386 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1141#endif 1387 #endif
1142 1388
1143#if HAVE_MMAP 1389#if HAVE_MMAP
1144 if (cctx->flags & CC_MAPPED) 1390 if (cctx->flags & CC_MAPPED)
1145 munmap (cctx->sptr, cctx->ssize); 1391 munmap (cctx->sptr, cctx->ssize);
1146 else 1392 else
… …
1167 return cctx; 1413 return cctx;
1168 1414
1169 cctx_destroy (cctx); 1415 cctx_destroy (cctx);
1170 } 1416 }
1171 1417
1172 return cctx_new (); 1418 return cctx_new_run ();
1173} 1419}
1174 1420
1175static void 1421static void
1176cctx_put (coro_cctx *cctx) 1422cctx_put (coro_cctx *cctx)
1177{ 1423{
1178 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1424 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1179 1425
1180 /* free another cctx if overlimit */ 1426 /* free another cctx if overlimit */
1181 if (expect_false (cctx_idle >= cctx_max_idle)) 1427 if (expect_false (cctx_idle >= cctx_max_idle))
1182 { 1428 {
1183 coro_cctx *first = cctx_first; 1429 coro_cctx *first = cctx_first;
… …
1195/** coroutine switching *****************************************************/ 1441/** coroutine switching *****************************************************/
1196 1442
1197static void 1443static void
1198transfer_check (pTHX_ struct coro *prev, struct coro *next) 1444transfer_check (pTHX_ struct coro *prev, struct coro *next)
1199{ 1445{
1446 /* TODO: throwing up here is considered harmful */
1447
1200 if (expect_true (prev != next)) 1448 if (expect_true (prev != next))
1201 { 1449 {
1202 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1450 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1203 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1451 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1204 1452
1205 if (expect_false (next->flags & CF_RUNNING))
1206 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1207
1208 if (expect_false (next->flags & CF_DESTROYED)) 1453 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1209 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1454 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1210 1455
1211#if !PERL_VERSION_ATLEAST (5,10,0) 1456#if !PERL_VERSION_ATLEAST (5,10,0)
1212 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1457 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1213 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1458 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1214#endif 1459#endif
1215 } 1460 }
1216} 1461}
1217 1462
1218/* always use the TRANSFER macro */ 1463/* always use the TRANSFER macro */
1219static void NOINLINE 1464static void NOINLINE /* noinline so we have a fixed stackframe */
1220transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1221{ 1466{
1222 dSTACKLEVEL; 1467 dSTACKLEVEL;
1223 1468
1224 /* sometimes transfer is only called to set idle_sp */ 1469 /* sometimes transfer is only called to set idle_sp */
1225 if (expect_false (!next)) 1470 if (expect_false (!prev))
1226 { 1471 {
1227 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1472 cctx_current->idle_sp = STACKLEVEL;
1228 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1473 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1229 } 1474 }
1230 else if (expect_true (prev != next)) 1475 else if (expect_true (prev != next))
1231 { 1476 {
1232 static volatile int has_throw;
1233 coro_cctx *prev__cctx; 1477 coro_cctx *cctx_prev;
1234 1478
1235 if (expect_false (prev->flags & CF_NEW)) 1479 if (expect_false (prev->flags & CF_NEW))
1236 { 1480 {
1237 /* create a new empty/source context */ 1481 /* create a new empty/source context */
1238 ++cctx_count;
1239 New (0, prev->cctx, 1, coro_cctx);
1240 prev->cctx->sptr = 0;
1241 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1242
1243 prev->flags &= ~CF_NEW; 1482 prev->flags &= ~CF_NEW;
1244 prev->flags |= CF_RUNNING; 1483 prev->flags |= CF_RUNNING;
1245 } 1484 }
1246 1485
1247 prev->flags &= ~CF_RUNNING; 1486 prev->flags &= ~CF_RUNNING;
1248 next->flags |= CF_RUNNING; 1487 next->flags |= CF_RUNNING;
1249
1250 LOCK;
1251 1488
1252 /* first get rid of the old state */ 1489 /* first get rid of the old state */
1253 save_perl (aTHX_ prev); 1490 save_perl (aTHX_ prev);
1254 1491
1255 if (expect_false (next->flags & CF_NEW)) 1492 if (expect_false (next->flags & CF_NEW))
… …
1260 coro_setup (aTHX_ next); 1497 coro_setup (aTHX_ next);
1261 } 1498 }
1262 else 1499 else
1263 load_perl (aTHX_ next); 1500 load_perl (aTHX_ next);
1264 1501
1265 prev__cctx = prev->cctx;
1266
1267 /* possibly "free" the cctx */ 1502 /* possibly untie and reuse the cctx */
1268 if (expect_true ( 1503 if (expect_true (
1269 prev__cctx->idle_sp == STACKLEVEL 1504 cctx_current->idle_sp == STACKLEVEL
1270 && !(prev__cctx->flags & CC_TRACE) 1505 && !(cctx_current->flags & CC_TRACE)
1271 && !force_cctx 1506 && !force_cctx
1272 )) 1507 ))
1273 { 1508 {
1274 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1509 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1275 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1510 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1276 1511
1277 prev->cctx = 0;
1278
1279 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1512 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1280 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1513 /* without this the next cctx_get might destroy the running cctx while still in use */
1281 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1514 if (expect_false (CCTX_EXPIRED (cctx_current)))
1282 if (!next->cctx) 1515 if (expect_true (!next->cctx))
1283 next->cctx = cctx_get (aTHX); 1516 next->cctx = cctx_get (aTHX);
1284 1517
1285 cctx_put (prev__cctx); 1518 cctx_put (cctx_current);
1286 } 1519 }
1520 else
1521 prev->cctx = cctx_current;
1287 1522
1288 ++next->usecount; 1523 ++next->usecount;
1289 1524
1290 if (expect_true (!next->cctx)) 1525 cctx_prev = cctx_current;
1291 next->cctx = cctx_get (aTHX); 1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1292 1527
1293 has_throw = !!next->throw; 1528 next->cctx = 0;
1294 1529
1295 if (expect_false (prev__cctx != next->cctx)) 1530 if (expect_false (cctx_prev != cctx_current))
1296 { 1531 {
1297 prev__cctx->top_env = PL_top_env; 1532 cctx_prev->top_env = PL_top_env;
1298 PL_top_env = next->cctx->top_env; 1533 PL_top_env = cctx_current->top_env;
1299 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1300 } 1535 }
1301 1536
1302 free_coro_mortal (aTHX); 1537 transfer_tail (aTHX);
1303 UNLOCK;
1304
1305 if (expect_false (has_throw))
1306 {
1307 struct coro *coro = SvSTATE (coro_current);
1308
1309 if (coro->throw)
1310 {
1311 SV *exception = coro->throw;
1312 coro->throw = 0;
1313 sv_setsv (ERRSV, exception);
1314 croak (0);
1315 }
1316 }
1317 } 1538 }
1318} 1539}
1319
1320struct transfer_args
1321{
1322 struct coro *prev, *next;
1323};
1324 1540
1325#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1541#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1326#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1542#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1327 1543
1328/** high level stuff ********************************************************/ 1544/** high level stuff ********************************************************/
… …
1330static int 1546static int
1331coro_state_destroy (pTHX_ struct coro *coro) 1547coro_state_destroy (pTHX_ struct coro *coro)
1332{ 1548{
1333 if (coro->flags & CF_DESTROYED) 1549 if (coro->flags & CF_DESTROYED)
1334 return 0; 1550 return 0;
1551
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro);
1335 1554
1336 coro->flags |= CF_DESTROYED; 1555 coro->flags |= CF_DESTROYED;
1337 1556
1338 if (coro->flags & CF_READY) 1557 if (coro->flags & CF_READY)
1339 { 1558 {
1340 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1559 /* reduce nready, as destroying a ready coro effectively unreadies it */
1341 /* alternative: look through all ready queues and remove the coro */ 1560 /* alternative: look through all ready queues and remove the coro */
1342 LOCK;
1343 --coro_nready; 1561 --coro_nready;
1344 UNLOCK;
1345 } 1562 }
1346 else 1563 else
1347 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1564 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1348 1565
1349 if (coro->mainstack && coro->mainstack != main_mainstack) 1566 if (coro->mainstack
1350 { 1567 && coro->mainstack != main_mainstack
1351 struct coro temp; 1568 && coro->slot
1352 1569 && !PL_dirty)
1353 if (coro->flags & CF_RUNNING)
1354 croak ("FATAL: tried to destroy currently running coroutine");
1355
1356 save_perl (aTHX_ &temp);
1357 load_perl (aTHX_ coro);
1358
1359 coro_destruct (aTHX_ coro); 1570 coro_destruct_perl (aTHX_ coro);
1360
1361 load_perl (aTHX_ &temp);
1362
1363 coro->slot = 0;
1364 }
1365 1571
1366 cctx_destroy (coro->cctx); 1572 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv);
1367 SvREFCNT_dec (coro->args); 1574 SvREFCNT_dec (coro->args);
1575 SvREFCNT_dec (CORO_THROW);
1368 1576
1369 if (coro->next) coro->next->prev = coro->prev; 1577 if (coro->next) coro->next->prev = coro->prev;
1370 if (coro->prev) coro->prev->next = coro->next; 1578 if (coro->prev) coro->prev->next = coro->next;
1371 if (coro == coro_first) coro_first = coro->next; 1579 if (coro == coro_first) coro_first = coro->next;
1372 1580
… …
1410# define MGf_DUP 0 1618# define MGf_DUP 0
1411#endif 1619#endif
1412}; 1620};
1413 1621
1414static void 1622static void
1415prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1623prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1416{ 1624{
1417 ta->prev = SvSTATE (prev_sv); 1625 ta->prev = SvSTATE (prev_sv);
1418 ta->next = SvSTATE (next_sv); 1626 ta->next = SvSTATE (next_sv);
1419 TRANSFER_CHECK (*ta); 1627 TRANSFER_CHECK (*ta);
1420} 1628}
1421 1629
1422static void 1630static void
1423api_transfer (SV *prev_sv, SV *next_sv) 1631api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1424{ 1632{
1425 dTHX;
1426 struct transfer_args ta; 1633 struct coro_transfer_args ta;
1427 1634
1428 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1635 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1429 TRANSFER (ta, 1); 1636 TRANSFER (ta, 1);
1430} 1637}
1431 1638
1432/** Coro ********************************************************************/ 1639/** Coro ********************************************************************/
1433 1640
1434static void 1641INLINE void
1435coro_enq (pTHX_ SV *coro_sv) 1642coro_enq (pTHX_ struct coro *coro)
1436{ 1643{
1437 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1438}
1439 1645
1440static SV * 1646 SvREFCNT_inc_NN (coro->hv);
1647
1648 coro->next_ready = 0;
1649 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1650 ready [1] = coro;
1651}
1652
1653INLINE struct coro *
1441coro_deq (pTHX) 1654coro_deq (pTHX)
1442{ 1655{
1443 int prio; 1656 int prio;
1444 1657
1445 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1446 if (AvFILLp (coro_ready [prio]) >= 0) 1659 {
1447 return av_shift (coro_ready [prio]); 1660 struct coro **ready = coro_ready [prio];
1661
1662 if (ready [0])
1663 {
1664 struct coro *coro = ready [0];
1665 ready [0] = coro->next_ready;
1666 return coro;
1667 }
1668 }
1448 1669
1449 return 0; 1670 return 0;
1450} 1671}
1451 1672
1673static void
1674invoke_sv_ready_hook_helper (void)
1675{
1676 dTHX;
1677 dSP;
1678
1679 ENTER;
1680 SAVETMPS;
1681
1682 PUSHMARK (SP);
1683 PUTBACK;
1684 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1685
1686 FREETMPS;
1687 LEAVE;
1688}
1689
1452static int 1690static int
1453api_ready (SV *coro_sv) 1691api_ready (pTHX_ SV *coro_sv)
1454{ 1692{
1455 dTHX;
1456 struct coro *coro;
1457 SV *sv_hook;
1458 void (*xs_hook)(void);
1459
1460 if (SvROK (coro_sv))
1461 coro_sv = SvRV (coro_sv);
1462
1463 coro = SvSTATE (coro_sv); 1693 struct coro *coro = SvSTATE (coro_sv);
1464 1694
1465 if (coro->flags & CF_READY) 1695 if (coro->flags & CF_READY)
1466 return 0; 1696 return 0;
1467 1697
1468 coro->flags |= CF_READY; 1698 coro->flags |= CF_READY;
1469 1699
1470 LOCK; 1700 coro_enq (aTHX_ coro);
1471 1701
1472 sv_hook = coro_nready ? 0 : coro_readyhook; 1702 if (!coro_nready++)
1473 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1703 if (coroapi.readyhook)
1474 1704 coroapi.readyhook ();
1475 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1476 ++coro_nready;
1477
1478 UNLOCK;
1479
1480 if (sv_hook)
1481 {
1482 dSP;
1483
1484 ENTER;
1485 SAVETMPS;
1486
1487 PUSHMARK (SP);
1488 PUTBACK;
1489 call_sv (sv_hook, G_DISCARD);
1490 SPAGAIN;
1491
1492 FREETMPS;
1493 LEAVE;
1494 }
1495
1496 if (xs_hook)
1497 xs_hook ();
1498 1705
1499 return 1; 1706 return 1;
1500} 1707}
1501 1708
1502static int 1709static int
1503api_is_ready (SV *coro_sv) 1710api_is_ready (pTHX_ SV *coro_sv)
1504{ 1711{
1505 dTHX;
1506 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1712 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1507} 1713}
1508 1714
1509static void 1715/* expects to own a reference to next->hv */
1716INLINE void
1510prepare_schedule (pTHX_ struct transfer_args *ta) 1717prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1511{ 1718{
1512 SV *prev_sv, *next_sv;
1513
1514 for (;;)
1515 {
1516 LOCK;
1517 next_sv = coro_deq (aTHX);
1518
1519 /* nothing to schedule: call the idle handler */
1520 if (expect_false (!next_sv))
1521 {
1522 dSP;
1523 UNLOCK;
1524
1525 ENTER;
1526 SAVETMPS;
1527
1528 PUSHMARK (SP);
1529 PUTBACK;
1530 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1531 SPAGAIN;
1532
1533 FREETMPS;
1534 LEAVE;
1535 continue;
1536 }
1537
1538 ta->next = SvSTATE (next_sv);
1539
1540 /* cannot transfer to destroyed coros, skip and look for next */
1541 if (expect_false (ta->next->flags & CF_DESTROYED))
1542 {
1543 UNLOCK;
1544 SvREFCNT_dec (next_sv);
1545 /* coro_nready is already taken care of by destroy */
1546 continue;
1547 }
1548
1549 --coro_nready;
1550 UNLOCK;
1551 break;
1552 }
1553
1554 /* free this only after the transfer */
1555 prev_sv = SvRV (coro_current); 1719 SV *prev_sv = SvRV (coro_current);
1720
1556 ta->prev = SvSTATE (prev_sv); 1721 ta->prev = SvSTATE_hv (prev_sv);
1722 ta->next = next;
1723
1557 TRANSFER_CHECK (*ta); 1724 TRANSFER_CHECK (*ta);
1558 assert (ta->next->flags & CF_READY); 1725
1559 ta->next->flags &= ~CF_READY;
1560 SvRV_set (coro_current, next_sv); 1726 SvRV_set (coro_current, (SV *)next->hv);
1561 1727
1562 LOCK;
1563 free_coro_mortal (aTHX); 1728 free_coro_mortal (aTHX);
1564 coro_mortal = prev_sv; 1729 coro_mortal = prev_sv;
1565 UNLOCK;
1566} 1730}
1567 1731
1568static void 1732static void
1733prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1734{
1735 for (;;)
1736 {
1737 struct coro *next = coro_deq (aTHX);
1738
1739 if (expect_true (next))
1740 {
1741 /* cannot transfer to destroyed coros, skip and look for next */
1742 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1743 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1744 else
1745 {
1746 next->flags &= ~CF_READY;
1747 --coro_nready;
1748
1749 prepare_schedule_to (aTHX_ ta, next);
1750 break;
1751 }
1752 }
1753 else
1754 {
1755 /* nothing to schedule: call the idle handler */
1756 if (SvROK (sv_idle)
1757 && SvOBJECT (SvRV (sv_idle)))
1758 {
1759 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1760 api_ready (aTHX_ SvRV (sv_idle));
1761 --coro_nready;
1762 }
1763 else
1764 {
1765 dSP;
1766
1767 ENTER;
1768 SAVETMPS;
1769
1770 PUSHMARK (SP);
1771 PUTBACK;
1772 call_sv (sv_idle, G_VOID | G_DISCARD);
1773
1774 FREETMPS;
1775 LEAVE;
1776 }
1777 }
1778 }
1779}
1780
1781INLINE void
1569prepare_cede (pTHX_ struct transfer_args *ta) 1782prepare_cede (pTHX_ struct coro_transfer_args *ta)
1570{ 1783{
1571 api_ready (coro_current); 1784 api_ready (aTHX_ coro_current);
1572 prepare_schedule (aTHX_ ta); 1785 prepare_schedule (aTHX_ ta);
1573} 1786}
1574 1787
1788INLINE void
1789prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1790{
1791 SV *prev = SvRV (coro_current);
1792
1793 if (coro_nready)
1794 {
1795 prepare_schedule (aTHX_ ta);
1796 api_ready (aTHX_ prev);
1797 }
1798 else
1799 prepare_nop (aTHX_ ta);
1800}
1801
1802static void
1803api_schedule (pTHX)
1804{
1805 struct coro_transfer_args ta;
1806
1807 prepare_schedule (aTHX_ &ta);
1808 TRANSFER (ta, 1);
1809}
1810
1811static void
1812api_schedule_to (pTHX_ SV *coro_sv)
1813{
1814 struct coro_transfer_args ta;
1815 struct coro *next = SvSTATE (coro_sv);
1816
1817 SvREFCNT_inc_NN (coro_sv);
1818 prepare_schedule_to (aTHX_ &ta, next);
1819}
1820
1575static int 1821static int
1576prepare_cede_notself (pTHX_ struct transfer_args *ta) 1822api_cede (pTHX)
1577{ 1823{
1578 if (coro_nready) 1824 struct coro_transfer_args ta;
1579 { 1825
1580 SV *prev = SvRV (coro_current);
1581 prepare_schedule (aTHX_ ta); 1826 prepare_cede (aTHX_ &ta);
1582 api_ready (prev); 1827
1828 if (expect_true (ta.prev != ta.next))
1829 {
1830 TRANSFER (ta, 1);
1583 return 1; 1831 return 1;
1584 } 1832 }
1585 else 1833 else
1586 return 0; 1834 return 0;
1587} 1835}
1588 1836
1589static void
1590api_schedule (void)
1591{
1592 dTHX;
1593 struct transfer_args ta;
1594
1595 prepare_schedule (aTHX_ &ta);
1596 TRANSFER (ta, 1);
1597}
1598
1599static int 1837static int
1600api_cede (void) 1838api_cede_notself (pTHX)
1601{ 1839{
1602 dTHX; 1840 if (coro_nready)
1841 {
1603 struct transfer_args ta; 1842 struct coro_transfer_args ta;
1604 1843
1605 prepare_cede (aTHX_ &ta); 1844 prepare_cede_notself (aTHX_ &ta);
1606
1607 if (expect_true (ta.prev != ta.next))
1608 {
1609 TRANSFER (ta, 1); 1845 TRANSFER (ta, 1);
1610 return 1; 1846 return 1;
1611 } 1847 }
1612 else 1848 else
1613 return 0; 1849 return 0;
1614} 1850}
1615 1851
1616static int 1852static void
1617api_cede_notself (void)
1618{
1619 dTHX;
1620 struct transfer_args ta;
1621
1622 if (prepare_cede_notself (aTHX_ &ta))
1623 {
1624 TRANSFER (ta, 1);
1625 return 1;
1626 }
1627 else
1628 return 0;
1629}
1630
1631static void
1632api_trace (SV *coro_sv, int flags) 1853api_trace (pTHX_ SV *coro_sv, int flags)
1633{ 1854{
1634 dTHX;
1635 struct coro *coro = SvSTATE (coro_sv); 1855 struct coro *coro = SvSTATE (coro_sv);
1636 1856
1857 if (coro->flags & CF_RUNNING)
1858 croak ("cannot enable tracing on a running coroutine, caught");
1859
1637 if (flags & CC_TRACE) 1860 if (flags & CC_TRACE)
1638 { 1861 {
1639 if (!coro->cctx) 1862 if (!coro->cctx)
1640 coro->cctx = cctx_new (); 1863 coro->cctx = cctx_new_run ();
1641 else if (!(coro->cctx->flags & CC_TRACE)) 1864 else if (!(coro->cctx->flags & CC_TRACE))
1642 croak ("cannot enable tracing on coroutine with custom stack"); 1865 croak ("cannot enable tracing on coroutine with custom stack, caught");
1643 1866
1644 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1867 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1645 } 1868 }
1646 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1869 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1647 { 1870 {
… …
1652 else 1875 else
1653 coro->slot->runops = RUNOPS_DEFAULT; 1876 coro->slot->runops = RUNOPS_DEFAULT;
1654 } 1877 }
1655} 1878}
1656 1879
1880static void
1881coro_call_on_destroy (pTHX_ struct coro *coro)
1882{
1883 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1884 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1885
1886 if (on_destroyp)
1887 {
1888 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1889
1890 while (AvFILLp (on_destroy) >= 0)
1891 {
1892 dSP; /* don't disturb outer sp */
1893 SV *cb = av_pop (on_destroy);
1894
1895 PUSHMARK (SP);
1896
1897 if (statusp)
1898 {
1899 int i;
1900 AV *status = (AV *)SvRV (*statusp);
1901 EXTEND (SP, AvFILLp (status) + 1);
1902
1903 for (i = 0; i <= AvFILLp (status); ++i)
1904 PUSHs (AvARRAY (status)[i]);
1905 }
1906
1907 PUTBACK;
1908 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1909 }
1910 }
1911}
1912
1913static void
1914slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1915{
1916 int i;
1917 HV *hv = (HV *)SvRV (coro_current);
1918 AV *av = newAV ();
1919
1920 av_extend (av, items - 1);
1921 for (i = 0; i < items; ++i)
1922 av_push (av, SvREFCNT_inc_NN (arg [i]));
1923
1924 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1925
1926 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1927 api_ready (aTHX_ sv_manager);
1928
1929 frame->prepare = prepare_schedule;
1930 frame->check = slf_check_repeat;
1931
1932 /* as a minor optimisation, we could unwind all stacks here */
1933 /* but that puts extra pressure on pp_slf, and is not worth much */
1934 /*coro_unwind_stacks (aTHX);*/
1935}
1936
1937/*****************************************************************************/
1938/* async pool handler */
1939
1657static int 1940static int
1658coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1941slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1659{ 1942{
1660 AV *padlist; 1943 HV *hv = (HV *)SvRV (coro_current);
1661 AV *av = (AV *)mg->mg_obj; 1944 struct coro *coro = (struct coro *)frame->data;
1662 1945
1663 abort (); 1946 if (!coro->invoke_cb)
1947 return 1; /* loop till we have invoke */
1948 else
1949 {
1950 hv_store (hv, "desc", sizeof ("desc") - 1,
1951 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1952
1953 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1954
1955 {
1956 dSP;
1957 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1958 PUTBACK;
1959 }
1960
1961 SvREFCNT_dec (GvAV (PL_defgv));
1962 GvAV (PL_defgv) = coro->invoke_av;
1963 coro->invoke_av = 0;
1964
1965 return 0;
1966 }
1967}
1968
1969static void
1970slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1971{
1972 HV *hv = (HV *)SvRV (coro_current);
1973 struct coro *coro = SvSTATE_hv ((SV *)hv);
1974
1975 if (expect_true (coro->saved_deffh))
1976 {
1977 /* subsequent iteration */
1978 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1979 coro->saved_deffh = 0;
1980
1981 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1982 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1983 {
1984 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1985 coro->invoke_av = newAV ();
1986
1987 frame->prepare = prepare_nop;
1988 }
1989 else
1990 {
1991 av_clear (GvAV (PL_defgv));
1992 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1993
1994 coro->prio = 0;
1995
1996 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1997 api_trace (aTHX_ coro_current, 0);
1998
1999 frame->prepare = prepare_schedule;
2000 av_push (av_async_pool, SvREFCNT_inc (hv));
2001 }
2002 }
2003 else
2004 {
2005 /* first iteration, simply fall through */
2006 frame->prepare = prepare_nop;
2007 }
2008
2009 frame->check = slf_check_pool_handler;
2010 frame->data = (void *)coro;
2011}
2012
2013/*****************************************************************************/
2014/* rouse callback */
2015
2016#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2017
2018static void
2019coro_rouse_callback (pTHX_ CV *cv)
2020{
2021 dXSARGS;
2022 SV *data = (SV *)S_GENSUB_ARG;
2023
2024 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2025 {
2026 /* first call, set args */
2027 SV *coro = SvRV (data);
2028 AV *av = newAV ();
2029
2030 SvRV_set (data, (SV *)av);
2031
2032 /* better take a full copy of the arguments */
2033 while (items--)
2034 av_store (av, items, newSVsv (ST (items)));
2035
2036 api_ready (aTHX_ coro);
2037 SvREFCNT_dec (coro);
2038 }
2039
2040 XSRETURN_EMPTY;
2041}
2042
2043static int
2044slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2045{
2046 SV *data = (SV *)frame->data;
2047
2048 if (CORO_THROW)
2049 return 0;
2050
2051 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2052 return 1;
2053
2054 /* now push all results on the stack */
2055 {
2056 dSP;
2057 AV *av = (AV *)SvRV (data);
2058 int i;
2059
2060 EXTEND (SP, AvFILLp (av) + 1);
2061 for (i = 0; i <= AvFILLp (av); ++i)
2062 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2063
2064 /* we have stolen the elements, so set length to zero and free */
2065 AvFILLp (av) = -1;
2066 av_undef (av);
2067
2068 PUTBACK;
2069 }
1664 2070
1665 return 0; 2071 return 0;
1666} 2072}
1667 2073
1668static MGVTBL coro_gensub_vtbl = { 2074static void
1669 0, 0, 0, 0, 2075slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1670 coro_gensub_free 2076{
1671}; 2077 SV *cb;
2078
2079 if (items)
2080 cb = arg [0];
2081 else
2082 {
2083 struct coro *coro = SvSTATE_current;
2084
2085 if (!coro->rouse_cb)
2086 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2087
2088 cb = sv_2mortal (coro->rouse_cb);
2089 coro->rouse_cb = 0;
2090 }
2091
2092 if (!SvROK (cb)
2093 || SvTYPE (SvRV (cb)) != SVt_PVCV
2094 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2095 croak ("Coro::rouse_wait called with illegal callback argument,");
2096
2097 {
2098 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2099 SV *data = (SV *)S_GENSUB_ARG;
2100
2101 frame->data = (void *)data;
2102 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2103 frame->check = slf_check_rouse_wait;
2104 }
2105}
2106
2107static SV *
2108coro_new_rouse_cb (pTHX)
2109{
2110 HV *hv = (HV *)SvRV (coro_current);
2111 struct coro *coro = SvSTATE_hv (hv);
2112 SV *data = newRV_inc ((SV *)hv);
2113 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2114
2115 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2116 SvREFCNT_dec (data); /* magicext increases the refcount */
2117
2118 SvREFCNT_dec (coro->rouse_cb);
2119 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2120
2121 return cb;
2122}
2123
2124/*****************************************************************************/
2125/* schedule-like-function opcode (SLF) */
2126
2127static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2128static const CV *slf_cv;
2129static SV **slf_argv;
2130static int slf_argc, slf_arga; /* count, allocated */
2131static I32 slf_ax; /* top of stack, for restore */
2132
2133/* this restores the stack in the case we patched the entersub, to */
2134/* recreate the stack frame as perl will on following calls */
2135/* since entersub cleared the stack */
2136static OP *
2137pp_restore (pTHX)
2138{
2139 int i;
2140 SV **SP = PL_stack_base + slf_ax;
2141
2142 PUSHMARK (SP);
2143
2144 EXTEND (SP, slf_argc + 1);
2145
2146 for (i = 0; i < slf_argc; ++i)
2147 PUSHs (sv_2mortal (slf_argv [i]));
2148
2149 PUSHs ((SV *)CvGV (slf_cv));
2150
2151 RETURNOP (slf_restore.op_first);
2152}
2153
2154static void
2155slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2156{
2157 SV **arg = (SV **)slf_frame.data;
2158
2159 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2160}
2161
2162static void
2163slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2164{
2165 if (items != 2)
2166 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2167
2168 frame->prepare = slf_prepare_transfer;
2169 frame->check = slf_check_nop;
2170 frame->data = (void *)arg; /* let's hope it will stay valid */
2171}
2172
2173static void
2174slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2175{
2176 frame->prepare = prepare_schedule;
2177 frame->check = slf_check_nop;
2178}
2179
2180static void
2181slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2182{
2183 struct coro *next = (struct coro *)slf_frame.data;
2184
2185 SvREFCNT_inc_NN (next->hv);
2186 prepare_schedule_to (aTHX_ ta, next);
2187}
2188
2189static void
2190slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2191{
2192 if (!items)
2193 croak ("Coro::schedule_to expects a coroutine argument, caught");
2194
2195 frame->data = (void *)SvSTATE (arg [0]);
2196 frame->prepare = slf_prepare_schedule_to;
2197 frame->check = slf_check_nop;
2198}
2199
2200static void
2201slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2202{
2203 api_ready (aTHX_ SvRV (coro_current));
2204
2205 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2206}
2207
2208static void
2209slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 frame->prepare = prepare_cede;
2212 frame->check = slf_check_nop;
2213}
2214
2215static void
2216slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2217{
2218 frame->prepare = prepare_cede_notself;
2219 frame->check = slf_check_nop;
2220}
2221
2222/*
2223 * these not obviously related functions are all rolled into one
2224 * function to increase chances that they all will call transfer with the same
2225 * stack offset
2226 * SLF stands for "schedule-like-function".
2227 */
2228static OP *
2229pp_slf (pTHX)
2230{
2231 I32 checkmark; /* mark SP to see how many elements check has pushed */
2232
2233 /* set up the slf frame, unless it has already been set-up */
2234 /* the latter happens when a new coro has been started */
2235 /* or when a new cctx was attached to an existing coroutine */
2236 if (expect_true (!slf_frame.prepare))
2237 {
2238 /* first iteration */
2239 dSP;
2240 SV **arg = PL_stack_base + TOPMARK + 1;
2241 int items = SP - arg; /* args without function object */
2242 SV *gv = *sp;
2243
2244 /* do a quick consistency check on the "function" object, and if it isn't */
2245 /* for us, divert to the real entersub */
2246 if (SvTYPE (gv) != SVt_PVGV
2247 || !GvCV (gv)
2248 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2249 return PL_ppaddr[OP_ENTERSUB](aTHX);
2250
2251 if (!(PL_op->op_flags & OPf_STACKED))
2252 {
2253 /* ampersand-form of call, use @_ instead of stack */
2254 AV *av = GvAV (PL_defgv);
2255 arg = AvARRAY (av);
2256 items = AvFILLp (av) + 1;
2257 }
2258
2259 /* now call the init function, which needs to set up slf_frame */
2260 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2261 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2262
2263 /* pop args */
2264 SP = PL_stack_base + POPMARK;
2265
2266 PUTBACK;
2267 }
2268
2269 /* now that we have a slf_frame, interpret it! */
2270 /* we use a callback system not to make the code needlessly */
2271 /* complicated, but so we can run multiple perl coros from one cctx */
2272
2273 do
2274 {
2275 struct coro_transfer_args ta;
2276
2277 slf_frame.prepare (aTHX_ &ta);
2278 TRANSFER (ta, 0);
2279
2280 checkmark = PL_stack_sp - PL_stack_base;
2281 }
2282 while (slf_frame.check (aTHX_ &slf_frame));
2283
2284 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2285
2286 /* exception handling */
2287 if (expect_false (CORO_THROW))
2288 {
2289 SV *exception = sv_2mortal (CORO_THROW);
2290
2291 CORO_THROW = 0;
2292 sv_setsv (ERRSV, exception);
2293 croak (0);
2294 }
2295
2296 /* return value handling - mostly like entersub */
2297 /* make sure we put something on the stack in scalar context */
2298 if (GIMME_V == G_SCALAR)
2299 {
2300 dSP;
2301 SV **bot = PL_stack_base + checkmark;
2302
2303 if (sp == bot) /* too few, push undef */
2304 bot [1] = &PL_sv_undef;
2305 else if (sp != bot + 1) /* too many, take last one */
2306 bot [1] = *sp;
2307
2308 SP = bot + 1;
2309
2310 PUTBACK;
2311 }
2312
2313 return NORMAL;
2314}
2315
2316static void
2317api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2318{
2319 int i;
2320 SV **arg = PL_stack_base + ax;
2321 int items = PL_stack_sp - arg + 1;
2322
2323 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2324
2325 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2326 && PL_op->op_ppaddr != pp_slf)
2327 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2328
2329 CvFLAGS (cv) |= CVf_SLF;
2330 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2331 slf_cv = cv;
2332
2333 /* we patch the op, and then re-run the whole call */
2334 /* we have to put the same argument on the stack for this to work */
2335 /* and this will be done by pp_restore */
2336 slf_restore.op_next = (OP *)&slf_restore;
2337 slf_restore.op_type = OP_CUSTOM;
2338 slf_restore.op_ppaddr = pp_restore;
2339 slf_restore.op_first = PL_op;
2340
2341 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2342
2343 if (PL_op->op_flags & OPf_STACKED)
2344 {
2345 if (items > slf_arga)
2346 {
2347 slf_arga = items;
2348 free (slf_argv);
2349 slf_argv = malloc (slf_arga * sizeof (SV *));
2350 }
2351
2352 slf_argc = items;
2353
2354 for (i = 0; i < items; ++i)
2355 slf_argv [i] = SvREFCNT_inc (arg [i]);
2356 }
2357 else
2358 slf_argc = 0;
2359
2360 PL_op->op_ppaddr = pp_slf;
2361 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2362
2363 PL_op = (OP *)&slf_restore;
2364}
2365
2366/*****************************************************************************/
2367/* dynamic wind */
2368
2369static void
2370on_enterleave_call (pTHX_ SV *cb)
2371{
2372 dSP;
2373
2374 PUSHSTACK;
2375
2376 PUSHMARK (SP);
2377 PUTBACK;
2378 call_sv (cb, G_VOID | G_DISCARD);
2379 SPAGAIN;
2380
2381 POPSTACK;
2382}
2383
2384static SV *
2385coro_avp_pop_and_free (pTHX_ AV **avp)
2386{
2387 AV *av = *avp;
2388 SV *res = av_pop (av);
2389
2390 if (AvFILLp (av) < 0)
2391 {
2392 *avp = 0;
2393 SvREFCNT_dec (av);
2394 }
2395
2396 return res;
2397}
2398
2399static void
2400coro_pop_on_enter (pTHX_ void *coro)
2401{
2402 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2403 SvREFCNT_dec (cb);
2404}
2405
2406static void
2407coro_pop_on_leave (pTHX_ void *coro)
2408{
2409 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2410 on_enterleave_call (aTHX_ sv_2mortal (cb));
2411}
1672 2412
1673/*****************************************************************************/ 2413/*****************************************************************************/
1674/* PerlIO::cede */ 2414/* PerlIO::cede */
1675 2415
1676typedef struct 2416typedef struct
… …
1704 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2444 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1705 double now = nvtime (); 2445 double now = nvtime ();
1706 2446
1707 if (now >= self->next) 2447 if (now >= self->next)
1708 { 2448 {
1709 api_cede (); 2449 api_cede (aTHX);
1710 self->next = now + self->every; 2450 self->next = now + self->every;
1711 } 2451 }
1712 2452
1713 return PerlIOBuf_flush (aTHX_ f); 2453 return PerlIOBuf_flush (aTHX_ f);
1714} 2454}
… …
1743 PerlIOBuf_get_ptr, 2483 PerlIOBuf_get_ptr,
1744 PerlIOBuf_get_cnt, 2484 PerlIOBuf_get_cnt,
1745 PerlIOBuf_set_ptrcnt, 2485 PerlIOBuf_set_ptrcnt,
1746}; 2486};
1747 2487
2488/*****************************************************************************/
2489/* Coro::Semaphore & Coro::Signal */
2490
2491static SV *
2492coro_waitarray_new (pTHX_ int count)
2493{
2494 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2495 AV *av = newAV ();
2496 SV **ary;
2497
2498 /* unfortunately, building manually saves memory */
2499 Newx (ary, 2, SV *);
2500 AvALLOC (av) = ary;
2501#if PERL_VERSION_ATLEAST (5,10,0)
2502 AvARRAY (av) = ary;
2503#else
2504 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2505 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2506 SvPVX ((SV *)av) = (char *)ary;
2507#endif
2508 AvMAX (av) = 1;
2509 AvFILLp (av) = 0;
2510 ary [0] = newSViv (count);
2511
2512 return newRV_noinc ((SV *)av);
2513}
2514
2515/* semaphore */
2516
2517static void
2518coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2519{
2520 SV *count_sv = AvARRAY (av)[0];
2521 IV count = SvIVX (count_sv);
2522
2523 count += adjust;
2524 SvIVX (count_sv) = count;
2525
2526 /* now wake up as many waiters as are expected to lock */
2527 while (count > 0 && AvFILLp (av) > 0)
2528 {
2529 SV *cb;
2530
2531 /* swap first two elements so we can shift a waiter */
2532 AvARRAY (av)[0] = AvARRAY (av)[1];
2533 AvARRAY (av)[1] = count_sv;
2534 cb = av_shift (av);
2535
2536 if (SvOBJECT (cb))
2537 {
2538 api_ready (aTHX_ cb);
2539 --count;
2540 }
2541 else if (SvTYPE (cb) == SVt_PVCV)
2542 {
2543 dSP;
2544 PUSHMARK (SP);
2545 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2546 PUTBACK;
2547 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2548 }
2549
2550 SvREFCNT_dec (cb);
2551 }
2552}
2553
2554static void
2555coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2556{
2557 /* call $sem->adjust (0) to possibly wake up some other waiters */
2558 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2559}
2560
2561static int
2562slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2563{
2564 AV *av = (AV *)frame->data;
2565 SV *count_sv = AvARRAY (av)[0];
2566
2567 /* if we are about to throw, don't actually acquire the lock, just throw */
2568 if (CORO_THROW)
2569 return 0;
2570 else if (SvIVX (count_sv) > 0)
2571 {
2572 SvSTATE_current->on_destroy = 0;
2573
2574 if (acquire)
2575 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2576 else
2577 coro_semaphore_adjust (aTHX_ av, 0);
2578
2579 return 0;
2580 }
2581 else
2582 {
2583 int i;
2584 /* if we were woken up but can't down, we look through the whole */
2585 /* waiters list and only add us if we aren't in there already */
2586 /* this avoids some degenerate memory usage cases */
2587
2588 for (i = 1; i <= AvFILLp (av); ++i)
2589 if (AvARRAY (av)[i] == SvRV (coro_current))
2590 return 1;
2591
2592 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2593 return 1;
2594 }
2595}
2596
2597static int
2598slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2599{
2600 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2601}
2602
2603static int
2604slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2605{
2606 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2607}
2608
2609static void
2610slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2611{
2612 AV *av = (AV *)SvRV (arg [0]);
2613
2614 if (SvIVX (AvARRAY (av)[0]) > 0)
2615 {
2616 frame->data = (void *)av;
2617 frame->prepare = prepare_nop;
2618 }
2619 else
2620 {
2621 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2622
2623 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2624 frame->prepare = prepare_schedule;
2625
2626 /* to avoid race conditions when a woken-up coro gets terminated */
2627 /* we arrange for a temporary on_destroy that calls adjust (0) */
2628 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2629 }
2630}
2631
2632static void
2633slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2634{
2635 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2636 frame->check = slf_check_semaphore_down;
2637}
2638
2639static void
2640slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2641{
2642 if (items >= 2)
2643 {
2644 /* callback form */
2645 AV *av = (AV *)SvRV (arg [0]);
2646 SV *cb_cv = s_get_cv_croak (arg [1]);
2647
2648 av_push (av, SvREFCNT_inc_NN (cb_cv));
2649
2650 if (SvIVX (AvARRAY (av)[0]) > 0)
2651 coro_semaphore_adjust (aTHX_ av, 0);
2652
2653 frame->prepare = prepare_nop;
2654 frame->check = slf_check_nop;
2655 }
2656 else
2657 {
2658 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2659 frame->check = slf_check_semaphore_wait;
2660 }
2661}
2662
2663/* signal */
2664
2665static void
2666coro_signal_wake (pTHX_ AV *av, int count)
2667{
2668 SvIVX (AvARRAY (av)[0]) = 0;
2669
2670 /* now signal count waiters */
2671 while (count > 0 && AvFILLp (av) > 0)
2672 {
2673 SV *cb;
2674
2675 /* swap first two elements so we can shift a waiter */
2676 cb = AvARRAY (av)[0];
2677 AvARRAY (av)[0] = AvARRAY (av)[1];
2678 AvARRAY (av)[1] = cb;
2679
2680 cb = av_shift (av);
2681
2682 if (SvTYPE (cb) == SVt_PVCV)
2683 {
2684 dSP;
2685 PUSHMARK (SP);
2686 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2687 PUTBACK;
2688 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2689 }
2690 else
2691 {
2692 api_ready (aTHX_ cb);
2693 sv_setiv (cb, 0); /* signal waiter */
2694 }
2695
2696 SvREFCNT_dec (cb);
2697
2698 --count;
2699 }
2700}
2701
2702static int
2703slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2704{
2705 /* if we are about to throw, also stop waiting */
2706 return SvROK ((SV *)frame->data) && !CORO_THROW;
2707}
2708
2709static void
2710slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2711{
2712 AV *av = (AV *)SvRV (arg [0]);
2713
2714 if (items >= 2)
2715 {
2716 SV *cb_cv = s_get_cv_croak (arg [1]);
2717 av_push (av, SvREFCNT_inc_NN (cb_cv));
2718
2719 if (SvIVX (AvARRAY (av)[0]))
2720 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2721
2722 frame->prepare = prepare_nop;
2723 frame->check = slf_check_nop;
2724 }
2725 else if (SvIVX (AvARRAY (av)[0]))
2726 {
2727 SvIVX (AvARRAY (av)[0]) = 0;
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else
2732 {
2733 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2734
2735 av_push (av, waiter);
2736
2737 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2738 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_signal_wait;
2740 }
2741}
2742
2743/*****************************************************************************/
2744/* Coro::AIO */
2745
2746#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2747
2748/* helper storage struct */
2749struct io_state
2750{
2751 int errorno;
2752 I32 laststype; /* U16 in 5.10.0 */
2753 int laststatval;
2754 Stat_t statcache;
2755};
2756
2757static void
2758coro_aio_callback (pTHX_ CV *cv)
2759{
2760 dXSARGS;
2761 AV *state = (AV *)S_GENSUB_ARG;
2762 SV *coro = av_pop (state);
2763 SV *data_sv = newSV (sizeof (struct io_state));
2764
2765 av_extend (state, items - 1);
2766
2767 sv_upgrade (data_sv, SVt_PV);
2768 SvCUR_set (data_sv, sizeof (struct io_state));
2769 SvPOK_only (data_sv);
2770
2771 {
2772 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2773
2774 data->errorno = errno;
2775 data->laststype = PL_laststype;
2776 data->laststatval = PL_laststatval;
2777 data->statcache = PL_statcache;
2778 }
2779
2780 /* now build the result vector out of all the parameters and the data_sv */
2781 {
2782 int i;
2783
2784 for (i = 0; i < items; ++i)
2785 av_push (state, SvREFCNT_inc_NN (ST (i)));
2786 }
2787
2788 av_push (state, data_sv);
2789
2790 api_ready (aTHX_ coro);
2791 SvREFCNT_dec (coro);
2792 SvREFCNT_dec ((AV *)state);
2793}
2794
2795static int
2796slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2797{
2798 AV *state = (AV *)frame->data;
2799
2800 /* if we are about to throw, return early */
2801 /* this does not cancel the aio request, but at least */
2802 /* it quickly returns */
2803 if (CORO_THROW)
2804 return 0;
2805
2806 /* one element that is an RV? repeat! */
2807 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2808 return 1;
2809
2810 /* restore status */
2811 {
2812 SV *data_sv = av_pop (state);
2813 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2814
2815 errno = data->errorno;
2816 PL_laststype = data->laststype;
2817 PL_laststatval = data->laststatval;
2818 PL_statcache = data->statcache;
2819
2820 SvREFCNT_dec (data_sv);
2821 }
2822
2823 /* push result values */
2824 {
2825 dSP;
2826 int i;
2827
2828 EXTEND (SP, AvFILLp (state) + 1);
2829 for (i = 0; i <= AvFILLp (state); ++i)
2830 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2831
2832 PUTBACK;
2833 }
2834
2835 return 0;
2836}
2837
2838static void
2839slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2840{
2841 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2842 SV *coro_hv = SvRV (coro_current);
2843 struct coro *coro = SvSTATE_hv (coro_hv);
2844
2845 /* put our coroutine id on the state arg */
2846 av_push (state, SvREFCNT_inc_NN (coro_hv));
2847
2848 /* first see whether we have a non-zero priority and set it as AIO prio */
2849 if (coro->prio)
2850 {
2851 dSP;
2852
2853 static SV *prio_cv;
2854 static SV *prio_sv;
2855
2856 if (expect_false (!prio_cv))
2857 {
2858 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2859 prio_sv = newSViv (0);
2860 }
2861
2862 PUSHMARK (SP);
2863 sv_setiv (prio_sv, coro->prio);
2864 XPUSHs (prio_sv);
2865
2866 PUTBACK;
2867 call_sv (prio_cv, G_VOID | G_DISCARD);
2868 }
2869
2870 /* now call the original request */
2871 {
2872 dSP;
2873 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2874 int i;
2875
2876 PUSHMARK (SP);
2877
2878 /* first push all args to the stack */
2879 EXTEND (SP, items + 1);
2880
2881 for (i = 0; i < items; ++i)
2882 PUSHs (arg [i]);
2883
2884 /* now push the callback closure */
2885 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2886
2887 /* now call the AIO function - we assume our request is uncancelable */
2888 PUTBACK;
2889 call_sv ((SV *)req, G_VOID | G_DISCARD);
2890 }
2891
2892 /* now that the requets is going, we loop toll we have a result */
2893 frame->data = (void *)state;
2894 frame->prepare = prepare_schedule;
2895 frame->check = slf_check_aio_req;
2896}
2897
2898static void
2899coro_aio_req_xs (pTHX_ CV *cv)
2900{
2901 dXSARGS;
2902
2903 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2904
2905 XSRETURN_EMPTY;
2906}
2907
2908/*****************************************************************************/
2909
2910#if CORO_CLONE
2911# include "clone.c"
2912#endif
1748 2913
1749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2914MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1750 2915
1751PROTOTYPES: DISABLE 2916PROTOTYPES: DISABLE
1752 2917
1753BOOT: 2918BOOT:
1754{ 2919{
1755#ifdef USE_ITHREADS 2920#ifdef USE_ITHREADS
1756 MUTEX_INIT (&coro_lock); 2921# if CORO_PTHREAD
2922 coro_thx = PERL_GET_CONTEXT;
2923# endif
1757#endif 2924#endif
1758 BOOT_PAGESIZE; 2925 BOOT_PAGESIZE;
2926
2927 cctx_current = cctx_new_empty ();
1759 2928
1760 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2929 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1761 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2930 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1762 2931
1763 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2932 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1779 main_top_env = PL_top_env; 2948 main_top_env = PL_top_env;
1780 2949
1781 while (main_top_env->je_prev) 2950 while (main_top_env->je_prev)
1782 main_top_env = main_top_env->je_prev; 2951 main_top_env = main_top_env->je_prev;
1783 2952
2953 {
2954 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2955
2956 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2957 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2958
2959 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2960 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2961 }
2962
1784 coroapi.ver = CORO_API_VERSION; 2963 coroapi.ver = CORO_API_VERSION;
1785 coroapi.rev = CORO_API_REVISION; 2964 coroapi.rev = CORO_API_REVISION;
2965
1786 coroapi.transfer = api_transfer; 2966 coroapi.transfer = api_transfer;
2967
2968 coroapi.sv_state = SvSTATE_;
2969 coroapi.execute_slf = api_execute_slf;
2970 coroapi.prepare_nop = prepare_nop;
2971 coroapi.prepare_schedule = prepare_schedule;
2972 coroapi.prepare_cede = prepare_cede;
2973 coroapi.prepare_cede_notself = prepare_cede_notself;
1787 2974
1788 { 2975 {
1789 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2976 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1790 2977
1791 if (!svp) croak ("Time::HiRes is required"); 2978 if (!svp) croak ("Time::HiRes is required");
1792 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2979 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1793 2980
1794 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2981 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2982
2983 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2984 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
1795 } 2985 }
1796 2986
1797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2987 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1798} 2988}
1799 2989
1800SV * 2990SV *
1801new (char *klass, ...) 2991new (char *klass, ...)
2992 ALIAS:
2993 Coro::new = 1
1802 CODE: 2994 CODE:
1803{ 2995{
1804 struct coro *coro; 2996 struct coro *coro;
1805 MAGIC *mg; 2997 MAGIC *mg;
1806 HV *hv; 2998 HV *hv;
2999 SV *cb;
1807 int i; 3000 int i;
3001
3002 if (items > 1)
3003 {
3004 cb = s_get_cv_croak (ST (1));
3005
3006 if (!ix)
3007 {
3008 if (CvISXSUB (cb))
3009 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3010
3011 if (!CvROOT (cb))
3012 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3013 }
3014 }
1808 3015
1809 Newz (0, coro, 1, struct coro); 3016 Newz (0, coro, 1, struct coro);
1810 coro->args = newAV (); 3017 coro->args = newAV ();
1811 coro->flags = CF_NEW; 3018 coro->flags = CF_NEW;
1812 3019
… …
1817 coro->hv = hv = newHV (); 3024 coro->hv = hv = newHV ();
1818 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3025 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1819 mg->mg_flags |= MGf_DUP; 3026 mg->mg_flags |= MGf_DUP;
1820 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3027 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1821 3028
3029 if (items > 1)
3030 {
1822 av_extend (coro->args, items - 1); 3031 av_extend (coro->args, items - 1 + ix - 1);
3032
3033 if (ix)
3034 {
3035 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3036 cb = (SV *)cv_coro_run;
3037 }
3038
3039 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3040
1823 for (i = 1; i < items; i++) 3041 for (i = 2; i < items; i++)
1824 av_push (coro->args, newSVsv (ST (i))); 3042 av_push (coro->args, newSVsv (ST (i)));
3043 }
1825} 3044}
1826 OUTPUT: 3045 OUTPUT:
1827 RETVAL 3046 RETVAL
1828 3047
1829# these not obviously related functions are all rolled into the same xs
1830# function to increase chances that they all will call transfer with the same
1831# stack offset
1832void 3048void
1833_set_stacklevel (...) 3049transfer (...)
1834 ALIAS: 3050 PROTOTYPE: $$
1835 Coro::State::transfer = 1 3051 CODE:
1836 Coro::schedule = 2 3052 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1837 Coro::cede = 3
1838 Coro::cede_notself = 4
1839 CODE:
1840{
1841 struct transfer_args ta;
1842
1843 PUTBACK;
1844 switch (ix)
1845 {
1846 case 0:
1847 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1848 ta.next = 0;
1849 break;
1850
1851 case 1:
1852 if (items != 2)
1853 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1854
1855 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1856 break;
1857
1858 case 2:
1859 prepare_schedule (aTHX_ &ta);
1860 break;
1861
1862 case 3:
1863 prepare_cede (aTHX_ &ta);
1864 break;
1865
1866 case 4:
1867 if (!prepare_cede_notself (aTHX_ &ta))
1868 XSRETURN_EMPTY;
1869
1870 break;
1871 }
1872 SPAGAIN;
1873
1874 BARRIER;
1875 PUTBACK;
1876 TRANSFER (ta, 0);
1877 SPAGAIN; /* might be the sp of a different coroutine now */
1878 /* be extra careful not to ever do anything after TRANSFER */
1879}
1880 3053
1881bool 3054bool
1882_destroy (SV *coro_sv) 3055_destroy (SV *coro_sv)
1883 CODE: 3056 CODE:
1884 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3057 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1889_exit (int code) 3062_exit (int code)
1890 PROTOTYPE: $ 3063 PROTOTYPE: $
1891 CODE: 3064 CODE:
1892 _exit (code); 3065 _exit (code);
1893 3066
3067SV *
3068clone (Coro::State coro)
3069 CODE:
3070{
3071#if CORO_CLONE
3072 struct coro *ncoro = coro_clone (aTHX_ coro);
3073 MAGIC *mg;
3074 /* TODO: too much duplication */
3075 ncoro->hv = newHV ();
3076 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3077 mg->mg_flags |= MGf_DUP;
3078 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3079#else
3080 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3081#endif
3082}
3083 OUTPUT:
3084 RETVAL
3085
1894int 3086int
1895cctx_stacksize (int new_stacksize = 0) 3087cctx_stacksize (int new_stacksize = 0)
3088 PROTOTYPE: ;$
1896 CODE: 3089 CODE:
1897 RETVAL = cctx_stacksize; 3090 RETVAL = cctx_stacksize;
1898 if (new_stacksize) 3091 if (new_stacksize)
1899 { 3092 {
1900 cctx_stacksize = new_stacksize; 3093 cctx_stacksize = new_stacksize;
… …
1903 OUTPUT: 3096 OUTPUT:
1904 RETVAL 3097 RETVAL
1905 3098
1906int 3099int
1907cctx_max_idle (int max_idle = 0) 3100cctx_max_idle (int max_idle = 0)
3101 PROTOTYPE: ;$
1908 CODE: 3102 CODE:
1909 RETVAL = cctx_max_idle; 3103 RETVAL = cctx_max_idle;
1910 if (max_idle > 1) 3104 if (max_idle > 1)
1911 cctx_max_idle = max_idle; 3105 cctx_max_idle = max_idle;
1912 OUTPUT: 3106 OUTPUT:
1913 RETVAL 3107 RETVAL
1914 3108
1915int 3109int
1916cctx_count () 3110cctx_count ()
3111 PROTOTYPE:
1917 CODE: 3112 CODE:
1918 RETVAL = cctx_count; 3113 RETVAL = cctx_count;
1919 OUTPUT: 3114 OUTPUT:
1920 RETVAL 3115 RETVAL
1921 3116
1922int 3117int
1923cctx_idle () 3118cctx_idle ()
3119 PROTOTYPE:
1924 CODE: 3120 CODE:
1925 RETVAL = cctx_idle; 3121 RETVAL = cctx_idle;
1926 OUTPUT: 3122 OUTPUT:
1927 RETVAL 3123 RETVAL
1928 3124
1929void 3125void
1930list () 3126list ()
3127 PROTOTYPE:
1931 PPCODE: 3128 PPCODE:
1932{ 3129{
1933 struct coro *coro; 3130 struct coro *coro;
1934 for (coro = coro_first; coro; coro = coro->next) 3131 for (coro = coro_first; coro; coro = coro->next)
1935 if (coro->hv) 3132 if (coro->hv)
… …
1942 eval = 1 3139 eval = 1
1943 CODE: 3140 CODE:
1944{ 3141{
1945 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3142 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1946 { 3143 {
1947 struct coro temp; 3144 struct coro *current = SvSTATE_current;
1948 3145
1949 if (!(coro->flags & CF_RUNNING)) 3146 if (current != coro)
1950 { 3147 {
1951 PUTBACK; 3148 PUTBACK;
1952 save_perl (aTHX_ &temp); 3149 save_perl (aTHX_ current);
1953 load_perl (aTHX_ coro); 3150 load_perl (aTHX_ coro);
3151 SPAGAIN;
1954 } 3152 }
1955 3153
1956 {
1957 dSP;
1958 ENTER;
1959 SAVETMPS;
1960 PUTBACK;
1961 PUSHSTACK; 3154 PUSHSTACK;
3155
1962 PUSHMARK (SP); 3156 PUSHMARK (SP);
3157 PUTBACK;
1963 3158
1964 if (ix) 3159 if (ix)
1965 eval_sv (coderef, 0); 3160 eval_sv (coderef, 0);
1966 else 3161 else
1967 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3162 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1968 3163
1969 POPSTACK; 3164 POPSTACK;
1970 SPAGAIN; 3165 SPAGAIN;
1971 FREETMPS;
1972 LEAVE;
1973 PUTBACK;
1974 }
1975 3166
1976 if (!(coro->flags & CF_RUNNING)) 3167 if (current != coro)
1977 { 3168 {
3169 PUTBACK;
1978 save_perl (aTHX_ coro); 3170 save_perl (aTHX_ coro);
1979 load_perl (aTHX_ &temp); 3171 load_perl (aTHX_ current);
1980 SPAGAIN; 3172 SPAGAIN;
1981 } 3173 }
1982 } 3174 }
1983} 3175}
1984 3176
… …
1988 ALIAS: 3180 ALIAS:
1989 is_ready = CF_READY 3181 is_ready = CF_READY
1990 is_running = CF_RUNNING 3182 is_running = CF_RUNNING
1991 is_new = CF_NEW 3183 is_new = CF_NEW
1992 is_destroyed = CF_DESTROYED 3184 is_destroyed = CF_DESTROYED
3185 is_suspended = CF_SUSPENDED
1993 CODE: 3186 CODE:
1994 RETVAL = boolSV (coro->flags & ix); 3187 RETVAL = boolSV (coro->flags & ix);
1995 OUTPUT: 3188 OUTPUT:
1996 RETVAL 3189 RETVAL
1997 3190
1998void 3191void
3192throw (Coro::State self, SV *throw = &PL_sv_undef)
3193 PROTOTYPE: $;$
3194 CODE:
3195{
3196 struct coro *current = SvSTATE_current;
3197 SV **throwp = self == current ? &CORO_THROW : &self->except;
3198 SvREFCNT_dec (*throwp);
3199 SvGETMAGIC (throw);
3200 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3201}
3202
3203void
1999api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3204api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3205 PROTOTYPE: $;$
3206 C_ARGS: aTHX_ coro, flags
2000 3207
2001SV * 3208SV *
2002has_cctx (Coro::State coro) 3209has_cctx (Coro::State coro)
2003 PROTOTYPE: $ 3210 PROTOTYPE: $
2004 CODE: 3211 CODE:
2005 RETVAL = boolSV (!!coro->cctx); 3212 /* maybe manage the running flag differently */
3213 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2006 OUTPUT: 3214 OUTPUT:
2007 RETVAL 3215 RETVAL
2008 3216
2009int 3217int
2010is_traced (Coro::State coro) 3218is_traced (Coro::State coro)
… …
2012 CODE: 3220 CODE:
2013 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3221 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2014 OUTPUT: 3222 OUTPUT:
2015 RETVAL 3223 RETVAL
2016 3224
2017IV 3225UV
2018rss (Coro::State coro) 3226rss (Coro::State coro)
2019 PROTOTYPE: $ 3227 PROTOTYPE: $
2020 ALIAS: 3228 ALIAS:
2021 usecount = 1 3229 usecount = 1
2022 CODE: 3230 CODE:
… …
2028 OUTPUT: 3236 OUTPUT:
2029 RETVAL 3237 RETVAL
2030 3238
2031void 3239void
2032force_cctx () 3240force_cctx ()
3241 PROTOTYPE:
2033 CODE: 3242 CODE:
2034 struct coro *coro = SvSTATE (coro_current);
2035 coro->cctx->idle_sp = 0; 3243 cctx_current->idle_sp = 0;
2036 3244
2037void 3245void
2038swap_defsv (Coro::State self) 3246swap_defsv (Coro::State self)
2039 PROTOTYPE: $ 3247 PROTOTYPE: $
2040 ALIAS: 3248 ALIAS:
2041 swap_defav = 1 3249 swap_defav = 1
2042 CODE: 3250 CODE:
2043 if (!self->slot) 3251 if (!self->slot)
2044 croak ("cannot swap state with coroutine that has no saved state"); 3252 croak ("cannot swap state with coroutine that has no saved state,");
2045 else 3253 else
2046 { 3254 {
2047 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3255 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2048 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3256 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2049 3257
2050 SV *tmp = *src; *src = *dst; *dst = tmp; 3258 SV *tmp = *src; *src = *dst; *dst = tmp;
2051 } 3259 }
2052 3260
3261void
3262cancel (Coro::State self)
3263 CODE:
3264 coro_state_destroy (aTHX_ self);
3265 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3266
3267
3268SV *
3269enable_times (int enabled = enable_times)
3270 CODE:
3271{
3272 RETVAL = boolSV (enable_times);
3273
3274 if (enabled != enable_times)
3275 {
3276 enable_times = enabled;
3277
3278 coro_times_update ();
3279 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3280 }
3281}
3282 OUTPUT:
3283 RETVAL
3284
3285void
3286times (Coro::State self)
3287 PPCODE:
3288{
3289 struct coro *current = SvSTATE (coro_current);
3290
3291 if (expect_false (current == self))
3292 {
3293 coro_times_update ();
3294 coro_times_add (SvSTATE (coro_current));
3295 }
3296
3297 EXTEND (SP, 2);
3298 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3299 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3300
3301 if (expect_false (current == self))
3302 coro_times_sub (SvSTATE (coro_current));
3303}
3304
2053MODULE = Coro::State PACKAGE = Coro 3305MODULE = Coro::State PACKAGE = Coro
2054 3306
2055BOOT: 3307BOOT:
2056{ 3308{
2057 int i;
2058
2059 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2060 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3309 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2061 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3310 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2062 3311 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3312 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2063 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3313 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2064 SvREADONLY_on (coro_current); 3314 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3315 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3316 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3317 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3318
3319 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3320 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3321 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3322 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2065 3323
2066 coro_stash = gv_stashpv ("Coro", TRUE); 3324 coro_stash = gv_stashpv ("Coro", TRUE);
2067 3325
2068 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3326 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2069 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3327 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2070 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3328 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2071 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3329 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2072 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3330 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2073 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3331 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2074
2075 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2076 coro_ready[i] = newAV ();
2077 3332
2078 { 3333 {
2079 SV *sv = perl_get_sv ("Coro::API", TRUE); 3334 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2080 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2081 3335
2082 coroapi.schedule = api_schedule; 3336 coroapi.schedule = api_schedule;
3337 coroapi.schedule_to = api_schedule_to;
2083 coroapi.cede = api_cede; 3338 coroapi.cede = api_cede;
2084 coroapi.cede_notself = api_cede_notself; 3339 coroapi.cede_notself = api_cede_notself;
2085 coroapi.ready = api_ready; 3340 coroapi.ready = api_ready;
2086 coroapi.is_ready = api_is_ready; 3341 coroapi.is_ready = api_is_ready;
2087 coroapi.nready = &coro_nready; 3342 coroapi.nready = coro_nready;
2088 coroapi.current = coro_current; 3343 coroapi.current = coro_current;
2089 3344
2090 GCoroAPI = &coroapi; 3345 /*GCoroAPI = &coroapi;*/
2091 sv_setiv (sv, (IV)&coroapi); 3346 sv_setiv (sv, (IV)&coroapi);
2092 SvREADONLY_on (sv); 3347 SvREADONLY_on (sv);
2093 } 3348 }
2094} 3349}
3350
3351void
3352terminate (...)
3353 CODE:
3354 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3355
3356void
3357schedule (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3360
3361void
3362schedule_to (...)
3363 CODE:
3364 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3365
3366void
3367cede_to (...)
3368 CODE:
3369 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3370
3371void
3372cede (...)
3373 CODE:
3374 CORO_EXECUTE_SLF_XS (slf_init_cede);
3375
3376void
3377cede_notself (...)
3378 CODE:
3379 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2095 3380
2096void 3381void
2097_set_current (SV *current) 3382_set_current (SV *current)
2098 PROTOTYPE: $ 3383 PROTOTYPE: $
2099 CODE: 3384 CODE:
… …
2102 3387
2103void 3388void
2104_set_readyhook (SV *hook) 3389_set_readyhook (SV *hook)
2105 PROTOTYPE: $ 3390 PROTOTYPE: $
2106 CODE: 3391 CODE:
2107 LOCK;
2108 SvREFCNT_dec (coro_readyhook); 3392 SvREFCNT_dec (coro_readyhook);
3393 SvGETMAGIC (hook);
3394 if (SvOK (hook))
3395 {
2109 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3396 coro_readyhook = newSVsv (hook);
2110 UNLOCK; 3397 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3398 }
3399 else
3400 {
3401 coro_readyhook = 0;
3402 CORO_READYHOOK = 0;
3403 }
2111 3404
2112int 3405int
2113prio (Coro::State coro, int newprio = 0) 3406prio (Coro::State coro, int newprio = 0)
3407 PROTOTYPE: $;$
2114 ALIAS: 3408 ALIAS:
2115 nice = 1 3409 nice = 1
2116 CODE: 3410 CODE:
2117{ 3411{
2118 RETVAL = coro->prio; 3412 RETVAL = coro->prio;
… …
2120 if (items > 1) 3414 if (items > 1)
2121 { 3415 {
2122 if (ix) 3416 if (ix)
2123 newprio = coro->prio - newprio; 3417 newprio = coro->prio - newprio;
2124 3418
2125 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3419 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2126 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3420 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2127 3421
2128 coro->prio = newprio; 3422 coro->prio = newprio;
2129 } 3423 }
2130} 3424}
2131 OUTPUT: 3425 OUTPUT:
… …
2133 3427
2134SV * 3428SV *
2135ready (SV *self) 3429ready (SV *self)
2136 PROTOTYPE: $ 3430 PROTOTYPE: $
2137 CODE: 3431 CODE:
2138 RETVAL = boolSV (api_ready (self)); 3432 RETVAL = boolSV (api_ready (aTHX_ self));
2139 OUTPUT: 3433 OUTPUT:
2140 RETVAL 3434 RETVAL
2141 3435
2142int 3436int
2143nready (...) 3437nready (...)
… …
2146 RETVAL = coro_nready; 3440 RETVAL = coro_nready;
2147 OUTPUT: 3441 OUTPUT:
2148 RETVAL 3442 RETVAL
2149 3443
2150void 3444void
2151throw (Coro::State self, SV *throw = &PL_sv_undef) 3445suspend (Coro::State self)
2152 PROTOTYPE: $;$ 3446 PROTOTYPE: $
2153 CODE: 3447 CODE:
2154 SvREFCNT_dec (self->throw); 3448 self->flags |= CF_SUSPENDED;
2155 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2156 3449
2157# for async_pool speedup
2158void 3450void
2159_pool_1 (SV *cb) 3451resume (Coro::State self)
3452 PROTOTYPE: $
2160 CODE: 3453 CODE:
2161{ 3454 self->flags &= ~CF_SUSPENDED;
2162 struct coro *coro = SvSTATE (coro_current);
2163 HV *hv = (HV *)SvRV (coro_current);
2164 AV *defav = GvAV (PL_defgv);
2165 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2166 AV *invoke_av;
2167 int i, len;
2168 3455
2169 if (!invoke) 3456void
3457_pool_handler (...)
3458 CODE:
3459 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3460
3461void
3462async_pool (SV *cv, ...)
3463 PROTOTYPE: &@
3464 PPCODE:
3465{
3466 HV *hv = (HV *)av_pop (av_async_pool);
3467 AV *av = newAV ();
3468 SV *cb = ST (0);
3469 int i;
3470
3471 av_extend (av, items - 2);
3472 for (i = 1; i < items; ++i)
3473 av_push (av, SvREFCNT_inc_NN (ST (i)));
3474
3475 if ((SV *)hv == &PL_sv_undef)
2170 { 3476 {
2171 SV *old = PL_diehook; 3477 PUSHMARK (SP);
2172 PL_diehook = 0; 3478 EXTEND (SP, 2);
2173 SvREFCNT_dec (old); 3479 PUSHs (sv_Coro);
2174 croak ("\3async_pool terminate\2\n"); 3480 PUSHs ((SV *)cv_pool_handler);
3481 PUTBACK;
3482 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3483 SPAGAIN;
3484
3485 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2175 } 3486 }
2176 3487
2177 SvREFCNT_dec (coro->saved_deffh);
2178 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2179
2180 hv_store (hv, "desc", sizeof ("desc") - 1,
2181 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2182
2183 invoke_av = (AV *)SvRV (invoke);
2184 len = av_len (invoke_av);
2185
2186 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2187
2188 if (len > 0)
2189 { 3488 {
2190 av_fill (defav, len - 1); 3489 struct coro *coro = SvSTATE_hv (hv);
2191 for (i = 0; i < len; ++i) 3490
2192 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3491 assert (!coro->invoke_cb);
3492 assert (!coro->invoke_av);
3493 coro->invoke_cb = SvREFCNT_inc (cb);
3494 coro->invoke_av = av;
2193 } 3495 }
2194 3496
3497 api_ready (aTHX_ (SV *)hv);
3498
3499 if (GIMME_V != G_VOID)
3500 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3501 else
2195 SvREFCNT_dec (invoke); 3502 SvREFCNT_dec (hv);
2196} 3503}
2197 3504
2198void 3505SV *
2199_pool_2 (SV *cb) 3506rouse_cb ()
3507 PROTOTYPE:
2200 CODE: 3508 CODE:
2201{ 3509 RETVAL = coro_new_rouse_cb (aTHX);
2202 struct coro *coro = SvSTATE (coro_current);
2203
2204 sv_setsv (cb, &PL_sv_undef);
2205
2206 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2207 coro->saved_deffh = 0;
2208
2209 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2210 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2211 {
2212 SV *old = PL_diehook;
2213 PL_diehook = 0;
2214 SvREFCNT_dec (old);
2215 croak ("\3async_pool terminate\2\n");
2216 }
2217
2218 av_clear (GvAV (PL_defgv));
2219 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2220 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2221
2222 coro->prio = 0;
2223
2224 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2225 api_trace (coro_current, 0);
2226
2227 av_push (av_async_pool, newSVsv (coro_current));
2228}
2229
2230#if 0
2231
2232void
2233_generator_call (...)
2234 PROTOTYPE: @
2235 PPCODE:
2236 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2237 xxxx
2238 abort ();
2239
2240SV *
2241gensub (SV *sub, ...)
2242 PROTOTYPE: &;@
2243 CODE:
2244{
2245 struct coro *coro;
2246 MAGIC *mg;
2247 CV *xcv;
2248 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2249 int i;
2250
2251 CvGV (ncv) = CvGV (cv);
2252 CvFILE (ncv) = CvFILE (cv);
2253
2254 Newz (0, coro, 1, struct coro);
2255 coro->args = newAV ();
2256 coro->flags = CF_NEW;
2257
2258 av_extend (coro->args, items - 1);
2259 for (i = 1; i < items; i++)
2260 av_push (coro->args, newSVsv (ST (i)));
2261
2262 CvISXSUB_on (ncv);
2263 CvXSUBANY (ncv).any_ptr = (void *)coro;
2264
2265 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2266
2267 CvXSUB (ncv) = CvXSUB (xcv);
2268 CvANON_on (ncv);
2269
2270 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2271 RETVAL = newRV_noinc ((SV *)ncv);
2272}
2273 OUTPUT: 3510 OUTPUT:
2274 RETVAL 3511 RETVAL
2275 3512
2276#endif
2277
2278
2279MODULE = Coro::State PACKAGE = Coro::AIO
2280
2281void 3513void
2282_get_state (SV *self) 3514rouse_wait (...)
3515 PROTOTYPE: ;$
2283 PPCODE: 3516 PPCODE:
2284{ 3517 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2285 AV *defav = GvAV (PL_defgv);
2286 AV *av = newAV ();
2287 int i;
2288 SV *data_sv = newSV (sizeof (struct io_state));
2289 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2290 SvCUR_set (data_sv, sizeof (struct io_state));
2291 SvPOK_only (data_sv);
2292
2293 data->errorno = errno;
2294 data->laststype = PL_laststype;
2295 data->laststatval = PL_laststatval;
2296 data->statcache = PL_statcache;
2297
2298 av_extend (av, AvFILLp (defav) + 1 + 1);
2299
2300 for (i = 0; i <= AvFILLp (defav); ++i)
2301 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2302
2303 av_push (av, data_sv);
2304
2305 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2306
2307 api_ready (self);
2308}
2309 3518
2310void 3519void
2311_set_state (SV *state) 3520on_enter (SV *block)
3521 ALIAS:
3522 on_leave = 1
2312 PROTOTYPE: $ 3523 PROTOTYPE: &
3524 CODE:
3525{
3526 struct coro *coro = SvSTATE_current;
3527 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3528
3529 block = s_get_cv_croak (block);
3530
3531 if (!*avp)
3532 *avp = newAV ();
3533
3534 av_push (*avp, SvREFCNT_inc (block));
3535
3536 if (!ix)
3537 on_enterleave_call (aTHX_ block);
3538
3539 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3540 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3541 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3542}
3543
3544
3545MODULE = Coro::State PACKAGE = PerlIO::cede
3546
3547BOOT:
3548 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3549
3550
3551MODULE = Coro::State PACKAGE = Coro::Semaphore
3552
3553SV *
3554new (SV *klass, SV *count = 0)
3555 CODE:
3556{
3557 int semcnt = 1;
3558
3559 if (count)
3560 {
3561 SvGETMAGIC (count);
3562
3563 if (SvOK (count))
3564 semcnt = SvIV (count);
3565 }
3566
3567 RETVAL = sv_bless (
3568 coro_waitarray_new (aTHX_ semcnt),
3569 GvSTASH (CvGV (cv))
3570 );
3571}
3572 OUTPUT:
3573 RETVAL
3574
3575# helper for Coro::Channel and others
3576SV *
3577_alloc (int count)
3578 CODE:
3579 RETVAL = coro_waitarray_new (aTHX_ count);
3580 OUTPUT:
3581 RETVAL
3582
3583SV *
3584count (SV *self)
3585 CODE:
3586 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3587 OUTPUT:
3588 RETVAL
3589
3590void
3591up (SV *self, int adjust = 1)
3592 ALIAS:
3593 adjust = 1
3594 CODE:
3595 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3596
3597void
3598down (...)
3599 CODE:
3600 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3601
3602void
3603wait (...)
3604 CODE:
3605 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3606
3607void
3608try (SV *self)
3609 PPCODE:
3610{
3611 AV *av = (AV *)SvRV (self);
3612 SV *count_sv = AvARRAY (av)[0];
3613 IV count = SvIVX (count_sv);
3614
3615 if (count > 0)
3616 {
3617 --count;
3618 SvIVX (count_sv) = count;
3619 XSRETURN_YES;
3620 }
3621 else
3622 XSRETURN_NO;
3623}
3624
3625void
3626waiters (SV *self)
3627 PPCODE:
3628{
3629 AV *av = (AV *)SvRV (self);
3630 int wcount = AvFILLp (av) + 1 - 1;
3631
3632 if (GIMME_V == G_SCALAR)
3633 XPUSHs (sv_2mortal (newSViv (wcount)));
3634 else
3635 {
3636 int i;
3637 EXTEND (SP, wcount);
3638 for (i = 1; i <= wcount; ++i)
3639 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3640 }
3641}
3642
3643MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3644
3645void
3646_may_delete (SV *sem, int count, int extra_refs)
2313 PPCODE: 3647 PPCODE:
2314{ 3648{
2315 AV *av = (AV *)SvRV (state); 3649 AV *av = (AV *)SvRV (sem);
2316 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2317 int i;
2318 3650
2319 errno = data->errorno; 3651 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2320 PL_laststype = data->laststype; 3652 && AvFILLp (av) == 0 /* no waiters, just count */
2321 PL_laststatval = data->laststatval; 3653 && SvIV (AvARRAY (av)[0]) == count)
2322 PL_statcache = data->statcache; 3654 XSRETURN_YES;
2323 3655
3656 XSRETURN_NO;
3657}
3658
3659MODULE = Coro::State PACKAGE = Coro::Signal
3660
3661SV *
3662new (SV *klass)
3663 CODE:
3664 RETVAL = sv_bless (
3665 coro_waitarray_new (aTHX_ 0),
3666 GvSTASH (CvGV (cv))
3667 );
3668 OUTPUT:
3669 RETVAL
3670
3671void
3672wait (...)
3673 CODE:
3674 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3675
3676void
3677broadcast (SV *self)
3678 CODE:
3679{
3680 AV *av = (AV *)SvRV (self);
3681 coro_signal_wake (aTHX_ av, AvFILLp (av));
3682}
3683
3684void
3685send (SV *self)
3686 CODE:
3687{
3688 AV *av = (AV *)SvRV (self);
3689
2324 EXTEND (SP, AvFILLp (av)); 3690 if (AvFILLp (av))
2325 for (i = 0; i < AvFILLp (av); ++i) 3691 coro_signal_wake (aTHX_ av, 1);
2326 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3692 else
3693 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2327} 3694}
3695
3696IV
3697awaited (SV *self)
3698 CODE:
3699 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3700 OUTPUT:
3701 RETVAL
2328 3702
2329 3703
2330MODULE = Coro::State PACKAGE = Coro::AnyEvent 3704MODULE = Coro::State PACKAGE = Coro::AnyEvent
2331 3705
2332BOOT: 3706BOOT:
2333 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3707 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2334 3708
2335SV * 3709void
2336_schedule (...) 3710_schedule (...)
2337 PROTOTYPE: @
2338 CODE: 3711 CODE:
2339{ 3712{
2340 static int incede; 3713 static int incede;
2341 3714
2342 api_cede_notself (); 3715 api_cede_notself (aTHX);
2343 3716
2344 ++incede; 3717 ++incede;
2345 while (coro_nready >= incede && api_cede ()) 3718 while (coro_nready >= incede && api_cede (aTHX))
2346 ; 3719 ;
2347 3720
2348 sv_setsv (sv_activity, &PL_sv_undef); 3721 sv_setsv (sv_activity, &PL_sv_undef);
2349 if (coro_nready >= incede) 3722 if (coro_nready >= incede)
2350 { 3723 {
2351 PUSHMARK (SP); 3724 PUSHMARK (SP);
2352 PUTBACK; 3725 PUTBACK;
2353 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3726 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2354 SPAGAIN;
2355 } 3727 }
2356 3728
2357 --incede; 3729 --incede;
2358} 3730}
2359 3731
2360 3732
2361MODULE = Coro::State PACKAGE = PerlIO::cede 3733MODULE = Coro::State PACKAGE = Coro::AIO
2362 3734
2363BOOT: 3735void
2364 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3736_register (char *target, char *proto, SV *req)
3737 CODE:
3738{
3739 SV *req_cv = s_get_cv_croak (req);
3740 /* newXSproto doesn't return the CV on 5.8 */
3741 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3742 sv_setpv ((SV *)slf_cv, proto);
3743 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3744}
3745
3746MODULE = Coro::State PACKAGE = Coro::Select
3747
3748void
3749patch_pp_sselect ()
3750 CODE:
3751 if (!coro_old_pp_sselect)
3752 {
3753 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3754 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3755 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3756 }
3757
3758void
3759unpatch_pp_sselect ()
3760 CODE:
3761 if (coro_old_pp_sselect)
3762 {
3763 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3764 coro_old_pp_sselect = 0;
3765 }
3766
3767

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