ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.244 by root, Sun Sep 21 18:29:39 2008 UTC vs.
Revision 1.368 by root, Thu Aug 13 02:35:41 2009 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "schmorp.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57
58#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
63
64#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr
67# endif
68# ifndef call_sv
69# define call_sv perl_call_sv
70# endif
71# ifndef get_sv
72# define get_sv perl_get_sv
73# endif
74# ifndef get_cv
75# define get_cv perl_get_cv
76# endif
77# ifndef IS_PADGV
78# define IS_PADGV(v) 0
79# endif
80# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0
82# endif
83#endif
84
85/* 5.8.8 */
86#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0
88#endif
89#ifndef newSV
90# define newSV(l) NEWSV(0,l)
91#endif
92
93/* 5.11 */
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif
97
98/* 5.8.7 */
99#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v)
101#endif
102 55
103#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
104# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
105#endif 58#endif
106 59
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 67#endif
115 68
116/* 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
117 * 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
118#define dSTACKLEVEL volatile char stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 76# define STACKLEVEL ((void *)&stacklevel)
77#endif
120 78
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
122 80
123#if __GNUC__ >= 3 81#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
127#else 85#else
128# define attribute(x) 86# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
88# define INLINE static
131#endif 89#endif
132 90
133#define expect_false(expr) expect ((expr) != 0, 0) 91#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
135 93
136#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
137 95
138#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
139 98
140#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 100# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 101static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 102# endif
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 103#endif
148 104
149/* helper storage struct for Coro::AIO */ 105#ifdef __linux
150struct io_state 106# include <time.h> /* for timespec */
151{ 107# include <syscall.h> /* for SYS_* */
152 int errorno; 108# ifdef SYS_clock_gettime
153 I32 laststype; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
154 int laststatval; 110# define CORO_CLOCK_MONOTONIC 1
155 Stat_t statcache; 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
156}; 112# endif
113#endif
157 114
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);
121
122static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 126static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
164 133
165static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 136static SV *rv_diehook;
168static SV *rv_warnhook; 137static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
170 139
171/* async_pool helper stuff */ 140/* async_pool helper stuff */
172static SV *sv_pool_rss; 141static SV *sv_pool_rss;
173static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
174static 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;
175 148
176/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
177static 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;
178 157
179static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
181 160
182enum { 161enum {
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 168};
190 169
191/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 171typedef struct coro_cctx
172{
193 struct coro_cctx *next; 173 struct coro_cctx *next;
194 174
195 /* the stack */ 175 /* the stack */
196 void *sptr; 176 void *sptr;
197 size_t ssize; 177 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 181 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 182 JMPENV *top_env;
203 coro_context cctx; 183 coro_context cctx;
204 184
185 U32 gen;
205#if CORO_USE_VALGRIND 186#if CORO_USE_VALGRIND
206 int valgrind_id; 187 int valgrind_id;
207#endif 188#endif
208 unsigned char flags; 189 unsigned char flags;
209} coro_cctx; 190} coro_cctx;
210 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
211enum { 196enum {
212 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
213 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
214 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
215 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 */
216}; 202};
217 203
218/* 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 */
219typedef struct { 205typedef struct
206{
220 SV *defsv; 207 SV *defsv;
221 AV *defav; 208 AV *defav;
222 SV *errsv; 209 SV *errsv;
223 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
224#define VAR(name,type) type name; 212#define VAR(name,type) type name;
225# include "state.h" 213# include "state.h"
226#undef VAR 214#undef VAR
227} perl_slots; 215} perl_slots;
228 216
229#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))
230 218
231/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
232struct coro { 220struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 222 coro_cctx *cctx;
235 223
236 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 229 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
239 231
232 CV *startcv; /* the CV to execute */
240 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
243 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);
244 238
245 /* statistics */ 239 /* statistics */
246 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
247 241
248 /* coro process data */ 242 /* coro process data */
249 int prio; 243 int prio;
250 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
251 246
252 /* async_pool */ 247 /* async_pool */
253 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;
254 258
255 /* linked list */ 259 /* linked list */
256 struct coro *next, *prev; 260 struct coro *next, *prev;
257}; 261};
258 262
259typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
261 265
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
262/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
263 272
264#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
265#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
266#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
267#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
268#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
269#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
270 279
271/* for Coro.pm */ 280/* for Coro.pm */
272static SV *coro_current; 281static SV *coro_current;
273static SV *coro_readyhook; 282static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
275static int coro_nready; 284static CV *cv_coro_run, *cv_coro_terminate;
276static 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}
277 307
278/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
279 309
280static SV * 310static SV *
281coro_get_sv (pTHX_ const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
… …
305 get_hv (name, create); 335 get_hv (name, create);
306#endif 336#endif
307 return get_hv (name, create); 337 return get_hv (name, create);
308} 338}
309 339
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
310static AV * 439static AV *
311coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
312{ 441{
313 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
314 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
315 444
316 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 451#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 453 --AvFILLp (padlist);
325 454
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
327 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
328 457
329 return newpadlist; 458 return newpadlist;
330} 459}
331 460
332static void 461static void
333free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
334{ 463{
335 /* may be during global destruction */ 464 /* may be during global destruction */
336 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
337 { 466 {
338 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
339 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
340 { 470 {
341 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
342 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
343 { 473 I32 j = AvFILLp (av);
344 SV *sv; 474
345 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
346 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
347
348 SvREFCNT_dec (*svp);
349 }
350 } 480 }
351 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
352 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
353 } 486 }
354} 487}
355 488
356static int 489static int
357coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
358{ 491{
359 AV *padlist; 492 AV *padlist;
360 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;
361 498
362 /* casting is fun. */ 499 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
365 502
366 SvREFCNT_dec (av); 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
367 504
368 return 0; 505 return 0;
369} 506}
370
371#define CORO_MAGIC_type_cv PERL_MAGIC_ext
372#define CORO_MAGIC_type_state PERL_MAGIC_ext
373 507
374static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
375 0, 0, 0, 0, 509 0, 0, 0, 0,
376 coro_cv_free 510 coro_cv_free
377}; 511};
378
379#define CORO_MAGIC(sv,type) \
380 SvMAGIC (sv) \
381 ? SvMAGIC (sv)->mg_type == type \
382 ? SvMAGIC (sv) \
383 : mg_find (sv, type) \
384 : 0
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
388
389static struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
414 512
415/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
416static void 514static void
417get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
418{ 516{
… …
424 else 522 else
425 { 523 {
426#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
427 /* this is probably cleaner? but also slower! */ 525 /* this is probably cleaner? but also slower! */
428 /* in practise, it seems to be less stable */ 526 /* in practise, it seems to be less stable */
429 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
430 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
431 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
432 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
433#else 531#else
434 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
435#endif 533#endif
436 } 534 }
437} 535}
438 536
439static void 537static void
… …
446 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);
447 545
448 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
449 547
450 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
451 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
452 550
453 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
454} 552}
455 553
456/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
457 558
458static void 559static void
459load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
460{ 561{
461 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
462 c->slot = 0; 563 c->slot = 0;
463 564
464 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
465 566
466 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
467 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
468 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
469 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
470 572
471 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
472 # include "state.h" 574 # include "state.h"
473 #undef VAR 575 #undef VAR
474 576
… …
485 CvPADLIST (cv) = (AV *)POPs; 587 CvPADLIST (cv) = (AV *)POPs;
486 } 588 }
487 589
488 PUTBACK; 590 PUTBACK;
489 } 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 }
490} 611}
491 612
492static void 613static void
493save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
494{ 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
495 { 635 {
496 dSP; 636 dSP;
497 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
498 PERL_CONTEXT *ccstk = cxstack; 638 PERL_CONTEXT *ccstk = cxstack;
499 PERL_SI *top_si = PL_curstackinfo; 639 PERL_SI *top_si = PL_curstackinfo;
… …
509 { 649 {
510 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
511 { 651 {
512 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
513 653
514 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))
515 { 655 {
516 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
517 657
518 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
519 { 659 {
… …
543 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
544 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
545 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
546 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
547 { 687 {
548 int i; 688 unsigned int i;
549 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
550 CXINC; 690 CXINC;
551 } 691 }
552 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
553 693
554 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
555 695
556 { 696 {
557 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
558 698
559 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
560 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
561 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
562 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
563 704
564 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
565 # include "state.h" 706 # include "state.h"
566 #undef VAR 707 #undef VAR
567 } 708 }
568} 709}
569 710
570/* 711/*
571 * allocate various perl stacks. This is an exact copy 712 * allocate various perl stacks. This is almost an exact copy
572 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
573 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
574 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
575 */ 716 */
576#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
577# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
578#else 719#else
579static void 720static void
580coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
581{ 722{
582 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
619 760
620/* 761/*
621 * destroy the stacks, the callchain etc... 762 * destroy the stacks, the callchain etc...
622 */ 763 */
623static void 764static void
624coro_destroy_stacks (pTHX) 765coro_destruct_stacks (pTHX)
625{ 766{
626 while (PL_curstackinfo->si_next) 767 while (PL_curstackinfo->si_next)
627 PL_curstackinfo = PL_curstackinfo->si_next; 768 PL_curstackinfo = PL_curstackinfo->si_next;
628 769
629 while (PL_curstackinfo) 770 while (PL_curstackinfo)
… …
645#if !PERL_VERSION_ATLEAST (5,10,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
646 Safefree (PL_retstack); 787 Safefree (PL_retstack);
647#endif 788#endif
648} 789}
649 790
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
650static size_t 800static size_t
651coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
652{ 802{
653 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
654 804
655 if (coro->mainstack) 805 if (coro->mainstack)
656 { 806 {
657 perl_slots tmp_slot;
658 perl_slots *slot;
659
660 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
661 { 808 {
662 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
663 810 CORO_RSS;
664 #define VAR(name,type) slot->name = PL_ ## name;
665 # include "state.h"
666 #undef VAR 811 #undef SYM
667 } 812 }
668 else 813 else
669 slot = coro->slot; 814 {
670 815 #define SYM(sym) coro->slot->sym
671 rss += sizeof (slot->curstackinfo); 816 CORO_RSS;
672 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 817 #undef SYM
673 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 818 }
674 rss += slot->tmps_max * sizeof (SV *);
675 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
676 rss += slot->scopestack_max * sizeof (I32);
677 rss += slot->savestack_max * sizeof (ANY);
678
679#if !PERL_VERSION_ATLEAST (5,10,0)
680 rss += slot->retstack_max * sizeof (OP *);
681#endif
682 } 819 }
683 820
684 return rss; 821 return rss;
685} 822}
686 823
… …
698#endif 835#endif
699 836
700/* 837/*
701 * This overrides the default magic get method of %SIG elements. 838 * This overrides the default magic get method of %SIG elements.
702 * 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
703 * 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
704 * readback here. 841 * readback here.
705 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
706 * not expecting this to actually change the hook. This is a potential problem
707 * when a schedule happens then, but we ignore this.
708 */ 842 */
709static int 843static int
710coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
711{ 845{
712 const char *s = MgPV_nolen_const (mg); 846 const char *s = MgPV_nolen_const (mg);
… …
765 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
766 900
767 if (svp) 901 if (svp)
768 { 902 {
769 SV *old = *svp; 903 SV *old = *svp;
770 *svp = newSVsv (sv); 904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
771 SvREFCNT_dec (old); 905 SvREFCNT_dec (old);
772 return 0; 906 return 0;
773 } 907 }
774 } 908 }
775 909
776 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
777} 911}
778 912
779static 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 */
780coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
781{ 936{
782 /* 937 /*
783 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
784 */ 939 */
… …
786 941
787 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
788 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
789 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
790 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
791 PL_curpm = 0; 949 PL_curpm = 0;
792 PL_curpad = 0; 950 PL_curpad = 0;
793 PL_localizing = 0; 951 PL_localizing = 0;
794 PL_dirty = 0; 952 PL_dirty = 0;
795 PL_restartop = 0; 953 PL_restartop = 0;
796#if PERL_VERSION_ATLEAST (5,10,0) 954#if PERL_VERSION_ATLEAST (5,10,0)
797 PL_parser = 0; 955 PL_parser = 0;
798#endif 956#endif
957 PL_hints = 0;
799 958
800 /* recreate the die/warn hooks */ 959 /* recreate the die/warn hooks */
801 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 );
802 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);
803 962
804 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
805 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
806 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
807 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;
808 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
809 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
810 970
811 { 971 {
812 dSP; 972 dSP;
813 LOGOP myop; 973 UNOP myop;
814 974
815 Zero (&myop, 1, LOGOP); 975 Zero (&myop, 1, UNOP);
816 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
817 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
818 979
819 PUSHMARK (SP); 980 PUSHMARK (SP);
820 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
821 PUTBACK; 982 PUTBACK;
822 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
823 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
824 SPAGAIN;
825 } 985 }
826 986
827 /* 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
828 * 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.
829 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
830 * so we ENTER here for symmetry
831 */ 989 */
832 ENTER; 990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
833} 991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
834 992
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
835static void 1011static void
836coro_destroy (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
837{ 1013{
838 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
839 { 1015 {
840 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
841 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
849 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
850 1026
851 /* unwind main stack */ 1027 /* unwind main stack */
852 dounwind (-1); 1028 dounwind (-1);
853 } 1029 }
1030}
854 1031
855 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
856 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
857 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
858 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
859 SvREFCNT_dec (PL_rs);
860 SvREFCNT_dec (GvSV (irsgv));
861 1036
862 SvREFCNT_dec (PL_diehook);
863 SvREFCNT_dec (PL_warnhook);
864 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
865 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
866 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
867 1071 SvREFCNT_dec (coro->invoke_cb);
868 coro_destroy_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
869} 1074}
870 1075
871static void 1076INLINE void
872free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
873{ 1078{
874 if (expect_true (coro_mortal)) 1079 if (expect_true (coro_mortal))
875 { 1080 {
876 SvREFCNT_dec (coro_mortal); 1081 SvREFCNT_dec (coro_mortal);
… …
881static int 1086static int
882runops_trace (pTHX) 1087runops_trace (pTHX)
883{ 1088{
884 COP *oldcop = 0; 1089 COP *oldcop = 0;
885 int oldcxix = -2; 1090 int oldcxix = -2;
886 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
887 coro_cctx *cctx = coro->cctx;
888 1091
889 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
890 { 1093 {
891 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
892 1095
893 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
894 { 1097 {
895 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)
896 { 1099 {
897 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
898 SV **bot, **top; 1101 SV **bot, **top;
899 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
900 SV **cb; 1103 SV **cb;
… …
910 : cx->blk_gimme == G_SCALAR ? bot + 1 1113 : cx->blk_gimme == G_SCALAR ? bot + 1
911 : bot; 1114 : bot;
912 1115
913 av_extend (av, top - bot); 1116 av_extend (av, top - bot);
914 while (bot < top) 1117 while (bot < top)
915 av_push (av, SvREFCNT_inc (*bot++)); 1118 av_push (av, SvREFCNT_inc_NN (*bot++));
916 1119
917 PL_runops = RUNOPS_DEFAULT; 1120 PL_runops = RUNOPS_DEFAULT;
918 ENTER; 1121 ENTER;
919 SAVETMPS; 1122 SAVETMPS;
920 EXTEND (SP, 3); 1123 EXTEND (SP, 3);
… …
937 1140
938 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
939 { 1142 {
940 SV **cb; 1143 SV **cb;
941 1144
942 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
943 { 1146 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 1148
946 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
947 { 1150 {
948 runops_proc_t old_runops = PL_runops;
949 dSP; 1151 dSP;
950 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
951 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
952 1154
953 if (isGV (gv)) 1155 if (isGV (gv))
… …
958 SAVETMPS; 1160 SAVETMPS;
959 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
960 PUSHMARK (SP); 1162 PUSHMARK (SP);
961 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
962 PUSHs (fullname); 1164 PUSHs (fullname);
963 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);
964 PUTBACK; 1166 PUTBACK;
965 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);
966 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);
967 SPAGAIN; 1169 SPAGAIN;
968 FREETMPS; 1170 FREETMPS;
… …
971 } 1173 }
972 1174
973 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
974 } 1176 }
975 1177
976 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
977 { 1179 {
978 dSP; 1180 dSP;
979 1181
980 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
981 ENTER; 1183 ENTER;
… …
1000 1202
1001 TAINT_NOT; 1203 TAINT_NOT;
1002 return 0; 1204 return 0;
1003} 1205}
1004 1206
1005/* inject a fake call to Coro::State::_cctx_init into the execution */ 1207static struct CoroSLF cctx_ssl_frame;
1006/* _cctx_init should be careful, as it could be called at almost any time */ 1208
1007/* 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 */
1008static void NOINLINE 1224static void NOINLINE
1009cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
1010{ 1226{
1011 dSP;
1012 LOGOP myop;
1013
1014 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
1015 1228
1016 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
1017 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
1018 1231
1019 Zero (&myop, 1, LOGOP); 1232 /* we already must be executing an SLF op, there is no other valid way
1020 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
1021 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));
1022 1236
1023 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1024 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
1025 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1239
1026 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
1027 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
1028 PL_op = (OP *)&myop; 1242}
1029 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1243
1030 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);
1031} 1249}
1032 1250
1033/* 1251/*
1034 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
1035 */ 1253 */
1036static void 1254static void
1037cctx_run (void *arg) 1255cctx_run (void *arg)
1038{ 1256{
1257#ifdef USE_ITHREADS
1258# if CORO_PTHREAD
1259 PERL_SET_CONTEXT (coro_thx);
1260# endif
1261#endif
1262 {
1039 dTHX; 1263 dTHX;
1040 1264
1041 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1265 /* normally we would need to skip the entersub here */
1042 UNLOCK; 1266 /* not doing so will re-execute it, which is exactly what we want */
1043
1044 /* we now skip the entersub that lead to transfer() */
1045 PL_op = PL_op->op_next; 1267 /* PL_nop = PL_nop->op_next */
1046 1268
1047 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
1048 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
1049 1271
1272 /* cctx_run is the alternative tail of transfer() */
1273 transfer_tail (aTHX);
1274
1050 /* 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 */
1051 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
1052 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
1053
1054 /* 1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1281 * runtime errors here, as this is just a random interpreter, not a thread.
1282 */
1283
1284 /*
1055 * If perl-run returns we assume exit() was being called or the coro 1285 * If perl-run returns we assume exit() was being called or the coro
1056 * fell off the end, which seems to be the only valid (non-bug) 1286 * fell off the end, which seems to be the only valid (non-bug)
1057 * reason for perl_run to return. We try to exit by jumping to the 1287 * reason for perl_run to return. We try to exit by jumping to the
1058 * bootstrap-time "top" top_env, as we cannot restore the "main" 1288 * bootstrap-time "top" top_env, as we cannot restore the "main"
1059 * coroutine as Coro has no such concept 1289 * coroutine as Coro has no such concept.
1290 * This actually isn't valid with the pthread backend, but OSes requiring
1291 * that backend are too broken to do it in a standards-compliant way.
1060 */ 1292 */
1061 PL_top_env = main_top_env; 1293 PL_top_env = main_top_env;
1062 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1294 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1295 }
1063} 1296}
1064 1297
1065static coro_cctx * 1298static coro_cctx *
1066cctx_new () 1299cctx_new ()
1067{ 1300{
1068 coro_cctx *cctx; 1301 coro_cctx *cctx;
1302
1303 ++cctx_count;
1304 New (0, cctx, 1, coro_cctx);
1305
1306 cctx->gen = cctx_gen;
1307 cctx->flags = 0;
1308 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1309
1310 return cctx;
1311}
1312
1313/* create a new cctx only suitable as source */
1314static coro_cctx *
1315cctx_new_empty ()
1316{
1317 coro_cctx *cctx = cctx_new ();
1318
1319 cctx->sptr = 0;
1320 coro_create (&cctx->cctx, 0, 0, 0, 0);
1321
1322 return cctx;
1323}
1324
1325/* create a new cctx suitable as destination/running a perl interpreter */
1326static coro_cctx *
1327cctx_new_run ()
1328{
1329 coro_cctx *cctx = cctx_new ();
1069 void *stack_start; 1330 void *stack_start;
1070 size_t stack_size; 1331 size_t stack_size;
1071 1332
1072 ++cctx_count;
1073
1074 Newz (0, cctx, 1, coro_cctx);
1075
1076#if HAVE_MMAP 1333#if HAVE_MMAP
1077 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1334 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1078 /* mmap supposedly does allocate-on-write for us */ 1335 /* mmap supposedly does allocate-on-write for us */
1079 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1336 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1080 1337
1081 if (cctx->sptr != (void *)-1) 1338 if (cctx->sptr != (void *)-1)
1082 { 1339 {
1083# if CORO_STACKGUARD 1340 #if CORO_STACKGUARD
1084 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1341 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1085# endif 1342 #endif
1086 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1343 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1087 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1344 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1088 cctx->flags |= CC_MAPPED; 1345 cctx->flags |= CC_MAPPED;
1089 } 1346 }
1090 else 1347 else
1091#endif 1348#endif
1092 { 1349 {
1093 cctx->ssize = coro_stacksize * (long)sizeof (long); 1350 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1094 New (0, cctx->sptr, coro_stacksize, long); 1351 New (0, cctx->sptr, cctx_stacksize, long);
1095 1352
1096 if (!cctx->sptr) 1353 if (!cctx->sptr)
1097 { 1354 {
1098 perror ("FATAL: unable to allocate stack for coroutine"); 1355 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1099 _exit (EXIT_FAILURE); 1356 _exit (EXIT_FAILURE);
1100 } 1357 }
1101 1358
1102 stack_start = cctx->sptr; 1359 stack_start = cctx->sptr;
1103 stack_size = cctx->ssize; 1360 stack_size = cctx->ssize;
1104 } 1361 }
1105 1362
1106 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1363 #if CORO_USE_VALGRIND
1364 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1365 #endif
1366
1107 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1367 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1108 1368
1109 return cctx; 1369 return cctx;
1110} 1370}
1111 1371
… …
1113cctx_destroy (coro_cctx *cctx) 1373cctx_destroy (coro_cctx *cctx)
1114{ 1374{
1115 if (!cctx) 1375 if (!cctx)
1116 return; 1376 return;
1117 1377
1378 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1379
1118 --cctx_count; 1380 --cctx_count;
1381 coro_destroy (&cctx->cctx);
1119 1382
1383 /* coro_transfer creates new, empty cctx's */
1384 if (cctx->sptr)
1385 {
1120#if CORO_USE_VALGRIND 1386 #if CORO_USE_VALGRIND
1121 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1387 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1388 #endif
1389
1390#if HAVE_MMAP
1391 if (cctx->flags & CC_MAPPED)
1392 munmap (cctx->sptr, cctx->ssize);
1393 else
1122#endif 1394#endif
1123
1124#if HAVE_MMAP
1125 if (cctx->flags & CC_MAPPED)
1126 munmap (cctx->sptr, cctx->ssize);
1127 else
1128#endif
1129 Safefree (cctx->sptr); 1395 Safefree (cctx->sptr);
1396 }
1130 1397
1131 Safefree (cctx); 1398 Safefree (cctx);
1132} 1399}
1133 1400
1134/* wether this cctx should be destructed */ 1401/* wether this cctx should be destructed */
1135#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1402#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1136 1403
1137static coro_cctx * 1404static coro_cctx *
1138cctx_get (pTHX) 1405cctx_get (pTHX)
1139{ 1406{
1140 while (expect_true (cctx_first)) 1407 while (expect_true (cctx_first))
… …
1147 return cctx; 1414 return cctx;
1148 1415
1149 cctx_destroy (cctx); 1416 cctx_destroy (cctx);
1150 } 1417 }
1151 1418
1152 return cctx_new (); 1419 return cctx_new_run ();
1153} 1420}
1154 1421
1155static void 1422static void
1156cctx_put (coro_cctx *cctx) 1423cctx_put (coro_cctx *cctx)
1157{ 1424{
1425 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1426
1158 /* free another cctx if overlimit */ 1427 /* free another cctx if overlimit */
1159 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1428 if (expect_false (cctx_idle >= cctx_max_idle))
1160 { 1429 {
1161 coro_cctx *first = cctx_first; 1430 coro_cctx *first = cctx_first;
1162 cctx_first = first->next; 1431 cctx_first = first->next;
1163 --cctx_idle; 1432 --cctx_idle;
1164 1433
… …
1173/** coroutine switching *****************************************************/ 1442/** coroutine switching *****************************************************/
1174 1443
1175static void 1444static void
1176transfer_check (pTHX_ struct coro *prev, struct coro *next) 1445transfer_check (pTHX_ struct coro *prev, struct coro *next)
1177{ 1446{
1447 /* TODO: throwing up here is considered harmful */
1448
1178 if (expect_true (prev != next)) 1449 if (expect_true (prev != next))
1179 { 1450 {
1180 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1451 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1181 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1452 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1182 1453
1183 if (expect_false (next->flags & CF_RUNNING))
1184 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1185
1186 if (expect_false (next->flags & CF_DESTROYED)) 1454 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1187 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1455 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1188 1456
1189#if !PERL_VERSION_ATLEAST (5,10,0) 1457#if !PERL_VERSION_ATLEAST (5,10,0)
1190 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1458 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1191 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1459 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1192#endif 1460#endif
1193 } 1461 }
1194} 1462}
1195 1463
1196/* always use the TRANSFER macro */ 1464/* always use the TRANSFER macro */
1197static void NOINLINE 1465static void NOINLINE /* noinline so we have a fixed stackframe */
1198transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1466transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1199{ 1467{
1200 dSTACKLEVEL; 1468 dSTACKLEVEL;
1201 static volatile int has_throw;
1202 1469
1203 /* sometimes transfer is only called to set idle_sp */ 1470 /* sometimes transfer is only called to set idle_sp */
1204 if (expect_false (!next)) 1471 if (expect_false (!prev))
1205 { 1472 {
1206 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1473 cctx_current->idle_sp = STACKLEVEL;
1207 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1474 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1208 } 1475 }
1209 else if (expect_true (prev != next)) 1476 else if (expect_true (prev != next))
1210 { 1477 {
1211 coro_cctx *prev__cctx; 1478 coro_cctx *cctx_prev;
1212 1479
1213 if (expect_false (prev->flags & CF_NEW)) 1480 if (expect_false (prev->flags & CF_NEW))
1214 { 1481 {
1215 /* create a new empty context */ 1482 /* create a new empty/source context */
1216 Newz (0, prev->cctx, 1, coro_cctx);
1217 prev->flags &= ~CF_NEW; 1483 prev->flags &= ~CF_NEW;
1218 prev->flags |= CF_RUNNING; 1484 prev->flags |= CF_RUNNING;
1219 } 1485 }
1220 1486
1221 prev->flags &= ~CF_RUNNING; 1487 prev->flags &= ~CF_RUNNING;
1222 next->flags |= CF_RUNNING; 1488 next->flags |= CF_RUNNING;
1223
1224 LOCK;
1225 1489
1226 /* first get rid of the old state */ 1490 /* first get rid of the old state */
1227 save_perl (aTHX_ prev); 1491 save_perl (aTHX_ prev);
1228 1492
1229 if (expect_false (next->flags & CF_NEW)) 1493 if (expect_false (next->flags & CF_NEW))
… …
1234 coro_setup (aTHX_ next); 1498 coro_setup (aTHX_ next);
1235 } 1499 }
1236 else 1500 else
1237 load_perl (aTHX_ next); 1501 load_perl (aTHX_ next);
1238 1502
1239 prev__cctx = prev->cctx;
1240
1241 /* possibly "free" the cctx */ 1503 /* possibly untie and reuse the cctx */
1242 if (expect_true ( 1504 if (expect_true (
1243 prev__cctx->idle_sp == STACKLEVEL 1505 cctx_current->idle_sp == STACKLEVEL
1244 && !(prev__cctx->flags & CC_TRACE) 1506 && !(cctx_current->flags & CC_TRACE)
1245 && !force_cctx 1507 && !force_cctx
1246 )) 1508 ))
1247 { 1509 {
1248 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1510 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1249 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1511 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1250 1512
1251 prev->cctx = 0;
1252
1253 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1513 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1254 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1514 /* without this the next cctx_get might destroy the running cctx while still in use */
1255 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1515 if (expect_false (CCTX_EXPIRED (cctx_current)))
1256 if (!next->cctx) 1516 if (expect_true (!next->cctx))
1257 next->cctx = cctx_get (aTHX); 1517 next->cctx = cctx_get (aTHX);
1258 1518
1259 cctx_put (prev__cctx); 1519 cctx_put (cctx_current);
1260 } 1520 }
1521 else
1522 prev->cctx = cctx_current;
1261 1523
1262 ++next->usecount; 1524 ++next->usecount;
1263 1525
1264 if (expect_true (!next->cctx)) 1526 cctx_prev = cctx_current;
1265 next->cctx = cctx_get (aTHX); 1527 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1266 1528
1267 has_throw = !!next->throw; 1529 next->cctx = 0;
1268 1530
1269 if (expect_false (prev__cctx != next->cctx)) 1531 if (expect_false (cctx_prev != cctx_current))
1270 { 1532 {
1271 prev__cctx->top_env = PL_top_env; 1533 cctx_prev->top_env = PL_top_env;
1272 PL_top_env = next->cctx->top_env; 1534 PL_top_env = cctx_current->top_env;
1273 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1535 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1274 } 1536 }
1275 1537
1276 free_coro_mortal (aTHX); 1538 transfer_tail (aTHX);
1277 UNLOCK;
1278
1279 if (expect_false (has_throw))
1280 {
1281 struct coro *coro = SvSTATE (coro_current);
1282
1283 if (coro->throw)
1284 {
1285 SV *exception = coro->throw;
1286 coro->throw = 0;
1287 sv_setsv (ERRSV, exception);
1288 croak (0);
1289 }
1290 }
1291 } 1539 }
1292} 1540}
1293
1294struct transfer_args
1295{
1296 struct coro *prev, *next;
1297};
1298 1541
1299#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1542#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1300#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1543#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1301 1544
1302/** high level stuff ********************************************************/ 1545/** high level stuff ********************************************************/
… …
1304static int 1547static int
1305coro_state_destroy (pTHX_ struct coro *coro) 1548coro_state_destroy (pTHX_ struct coro *coro)
1306{ 1549{
1307 if (coro->flags & CF_DESTROYED) 1550 if (coro->flags & CF_DESTROYED)
1308 return 0; 1551 return 0;
1552
1553 if (coro->on_destroy && !PL_dirty)
1554 coro->on_destroy (aTHX_ coro);
1309 1555
1310 coro->flags |= CF_DESTROYED; 1556 coro->flags |= CF_DESTROYED;
1311 1557
1312 if (coro->flags & CF_READY) 1558 if (coro->flags & CF_READY)
1313 { 1559 {
1314 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1560 /* reduce nready, as destroying a ready coro effectively unreadies it */
1315 /* alternative: look through all ready queues and remove the coro */ 1561 /* alternative: look through all ready queues and remove the coro */
1316 LOCK;
1317 --coro_nready; 1562 --coro_nready;
1318 UNLOCK;
1319 } 1563 }
1320 else 1564 else
1321 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1565 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1322 1566
1323 if (coro->mainstack && coro->mainstack != main_mainstack) 1567 if (coro->mainstack
1324 { 1568 && coro->mainstack != main_mainstack
1325 struct coro temp; 1569 && coro->slot
1326 1570 && !PL_dirty)
1327 if (coro->flags & CF_RUNNING)
1328 croak ("FATAL: tried to destroy currently running coroutine");
1329
1330 save_perl (aTHX_ &temp);
1331 load_perl (aTHX_ coro);
1332
1333 coro_destroy (aTHX_ coro); 1571 coro_destruct_perl (aTHX_ coro);
1334
1335 load_perl (aTHX_ &temp);
1336
1337 coro->slot = 0;
1338 }
1339 1572
1340 cctx_destroy (coro->cctx); 1573 cctx_destroy (coro->cctx);
1574 SvREFCNT_dec (coro->startcv);
1341 SvREFCNT_dec (coro->args); 1575 SvREFCNT_dec (coro->args);
1576 SvREFCNT_dec (CORO_THROW);
1342 1577
1343 if (coro->next) coro->next->prev = coro->prev; 1578 if (coro->next) coro->next->prev = coro->prev;
1344 if (coro->prev) coro->prev->next = coro->next; 1579 if (coro->prev) coro->prev->next = coro->next;
1345 if (coro == coro_first) coro_first = coro->next; 1580 if (coro == coro_first) coro_first = coro->next;
1346 1581
… …
1384# define MGf_DUP 0 1619# define MGf_DUP 0
1385#endif 1620#endif
1386}; 1621};
1387 1622
1388static void 1623static void
1389prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1624prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1390{ 1625{
1391 ta->prev = SvSTATE (prev_sv); 1626 ta->prev = SvSTATE (prev_sv);
1392 ta->next = SvSTATE (next_sv); 1627 ta->next = SvSTATE (next_sv);
1393 TRANSFER_CHECK (*ta); 1628 TRANSFER_CHECK (*ta);
1394} 1629}
1395 1630
1396static void 1631static void
1397api_transfer (SV *prev_sv, SV *next_sv) 1632api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1398{ 1633{
1399 dTHX;
1400 struct transfer_args ta; 1634 struct coro_transfer_args ta;
1401 1635
1402 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1636 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1403 TRANSFER (ta, 1); 1637 TRANSFER (ta, 1);
1404} 1638}
1405 1639
1406/** Coro ********************************************************************/ 1640/** Coro ********************************************************************/
1407 1641
1408static void 1642INLINE void
1409coro_enq (pTHX_ SV *coro_sv) 1643coro_enq (pTHX_ struct coro *coro)
1410{ 1644{
1411 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1412}
1413 1646
1414static SV * 1647 SvREFCNT_inc_NN (coro->hv);
1648
1649 coro->next_ready = 0;
1650 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1651 ready [1] = coro;
1652}
1653
1654INLINE struct coro *
1415coro_deq (pTHX) 1655coro_deq (pTHX)
1416{ 1656{
1417 int prio; 1657 int prio;
1418 1658
1419 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1420 if (AvFILLp (coro_ready [prio]) >= 0) 1660 {
1421 return av_shift (coro_ready [prio]); 1661 struct coro **ready = coro_ready [prio];
1662
1663 if (ready [0])
1664 {
1665 struct coro *coro = ready [0];
1666 ready [0] = coro->next_ready;
1667 return coro;
1668 }
1669 }
1422 1670
1423 return 0; 1671 return 0;
1424} 1672}
1425 1673
1674static void
1675invoke_sv_ready_hook_helper (void)
1676{
1677 dTHX;
1678 dSP;
1679
1680 ENTER;
1681 SAVETMPS;
1682
1683 PUSHMARK (SP);
1684 PUTBACK;
1685 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1686
1687 FREETMPS;
1688 LEAVE;
1689}
1690
1426static int 1691static int
1427api_ready (SV *coro_sv) 1692api_ready (pTHX_ SV *coro_sv)
1428{ 1693{
1429 dTHX;
1430 struct coro *coro;
1431 SV *sv_hook;
1432 void (*xs_hook)(void);
1433
1434 if (SvROK (coro_sv))
1435 coro_sv = SvRV (coro_sv);
1436
1437 coro = SvSTATE (coro_sv); 1694 struct coro *coro = SvSTATE (coro_sv);
1438 1695
1439 if (coro->flags & CF_READY) 1696 if (coro->flags & CF_READY)
1440 return 0; 1697 return 0;
1441 1698
1442 coro->flags |= CF_READY; 1699 coro->flags |= CF_READY;
1443 1700
1444 LOCK; 1701 coro_enq (aTHX_ coro);
1445 1702
1446 sv_hook = coro_nready ? 0 : coro_readyhook; 1703 if (!coro_nready++)
1447 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1704 if (coroapi.readyhook)
1448 1705 coroapi.readyhook ();
1449 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1450 ++coro_nready;
1451
1452 UNLOCK;
1453
1454 if (sv_hook)
1455 {
1456 dSP;
1457
1458 ENTER;
1459 SAVETMPS;
1460
1461 PUSHMARK (SP);
1462 PUTBACK;
1463 call_sv (sv_hook, G_DISCARD);
1464 SPAGAIN;
1465
1466 FREETMPS;
1467 LEAVE;
1468 }
1469
1470 if (xs_hook)
1471 xs_hook ();
1472 1706
1473 return 1; 1707 return 1;
1474} 1708}
1475 1709
1476static int 1710static int
1477api_is_ready (SV *coro_sv) 1711api_is_ready (pTHX_ SV *coro_sv)
1478{ 1712{
1479 dTHX;
1480 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1713 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1481} 1714}
1482 1715
1483static void 1716/* expects to own a reference to next->hv */
1717INLINE void
1484prepare_schedule (pTHX_ struct transfer_args *ta) 1718prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1485{ 1719{
1486 SV *prev_sv, *next_sv;
1487
1488 for (;;)
1489 {
1490 LOCK;
1491 next_sv = coro_deq (aTHX);
1492
1493 /* nothing to schedule: call the idle handler */
1494 if (expect_false (!next_sv))
1495 {
1496 dSP;
1497 UNLOCK;
1498
1499 ENTER;
1500 SAVETMPS;
1501
1502 PUSHMARK (SP);
1503 PUTBACK;
1504 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1505 SPAGAIN;
1506
1507 FREETMPS;
1508 LEAVE;
1509 continue;
1510 }
1511
1512 ta->next = SvSTATE (next_sv);
1513
1514 /* cannot transfer to destroyed coros, skip and look for next */
1515 if (expect_false (ta->next->flags & CF_DESTROYED))
1516 {
1517 UNLOCK;
1518 SvREFCNT_dec (next_sv);
1519 /* coro_nready is already taken care of by destroy */
1520 continue;
1521 }
1522
1523 --coro_nready;
1524 UNLOCK;
1525 break;
1526 }
1527
1528 /* free this only after the transfer */
1529 prev_sv = SvRV (coro_current); 1720 SV *prev_sv = SvRV (coro_current);
1721
1530 ta->prev = SvSTATE (prev_sv); 1722 ta->prev = SvSTATE_hv (prev_sv);
1723 ta->next = next;
1724
1531 TRANSFER_CHECK (*ta); 1725 TRANSFER_CHECK (*ta);
1532 assert (ta->next->flags & CF_READY); 1726
1533 ta->next->flags &= ~CF_READY;
1534 SvRV_set (coro_current, next_sv); 1727 SvRV_set (coro_current, (SV *)next->hv);
1535 1728
1536 LOCK;
1537 free_coro_mortal (aTHX); 1729 free_coro_mortal (aTHX);
1538 coro_mortal = prev_sv; 1730 coro_mortal = prev_sv;
1539 UNLOCK;
1540} 1731}
1541 1732
1542static void 1733static void
1734prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1735{
1736 for (;;)
1737 {
1738 struct coro *next = coro_deq (aTHX);
1739
1740 if (expect_true (next))
1741 {
1742 /* cannot transfer to destroyed coros, skip and look for next */
1743 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1744 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1745 else
1746 {
1747 next->flags &= ~CF_READY;
1748 --coro_nready;
1749
1750 prepare_schedule_to (aTHX_ ta, next);
1751 break;
1752 }
1753 }
1754 else
1755 {
1756 /* nothing to schedule: call the idle handler */
1757 if (SvROK (sv_idle)
1758 && SvOBJECT (SvRV (sv_idle)))
1759 {
1760 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1761 api_ready (aTHX_ SvRV (sv_idle));
1762 --coro_nready;
1763 }
1764 else
1765 {
1766 dSP;
1767
1768 ENTER;
1769 SAVETMPS;
1770
1771 PUSHMARK (SP);
1772 PUTBACK;
1773 call_sv (sv_idle, G_VOID | G_DISCARD);
1774
1775 FREETMPS;
1776 LEAVE;
1777 }
1778 }
1779 }
1780}
1781
1782INLINE void
1543prepare_cede (pTHX_ struct transfer_args *ta) 1783prepare_cede (pTHX_ struct coro_transfer_args *ta)
1544{ 1784{
1545 api_ready (coro_current); 1785 api_ready (aTHX_ coro_current);
1546 prepare_schedule (aTHX_ ta); 1786 prepare_schedule (aTHX_ ta);
1547} 1787}
1548 1788
1789INLINE void
1790prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1791{
1792 SV *prev = SvRV (coro_current);
1793
1794 if (coro_nready)
1795 {
1796 prepare_schedule (aTHX_ ta);
1797 api_ready (aTHX_ prev);
1798 }
1799 else
1800 prepare_nop (aTHX_ ta);
1801}
1802
1803static void
1804api_schedule (pTHX)
1805{
1806 struct coro_transfer_args ta;
1807
1808 prepare_schedule (aTHX_ &ta);
1809 TRANSFER (ta, 1);
1810}
1811
1812static void
1813api_schedule_to (pTHX_ SV *coro_sv)
1814{
1815 struct coro_transfer_args ta;
1816 struct coro *next = SvSTATE (coro_sv);
1817
1818 SvREFCNT_inc_NN (coro_sv);
1819 prepare_schedule_to (aTHX_ &ta, next);
1820}
1821
1549static int 1822static int
1550prepare_cede_notself (pTHX_ struct transfer_args *ta) 1823api_cede (pTHX)
1551{ 1824{
1552 if (coro_nready) 1825 struct coro_transfer_args ta;
1553 { 1826
1554 SV *prev = SvRV (coro_current);
1555 prepare_schedule (aTHX_ ta); 1827 prepare_cede (aTHX_ &ta);
1556 api_ready (prev); 1828
1829 if (expect_true (ta.prev != ta.next))
1830 {
1831 TRANSFER (ta, 1);
1557 return 1; 1832 return 1;
1558 } 1833 }
1559 else 1834 else
1560 return 0; 1835 return 0;
1561} 1836}
1562 1837
1563static void
1564api_schedule (void)
1565{
1566 dTHX;
1567 struct transfer_args ta;
1568
1569 prepare_schedule (aTHX_ &ta);
1570 TRANSFER (ta, 1);
1571}
1572
1573static int 1838static int
1574api_cede (void) 1839api_cede_notself (pTHX)
1575{ 1840{
1576 dTHX; 1841 if (coro_nready)
1842 {
1577 struct transfer_args ta; 1843 struct coro_transfer_args ta;
1578 1844
1579 prepare_cede (aTHX_ &ta); 1845 prepare_cede_notself (aTHX_ &ta);
1580
1581 if (expect_true (ta.prev != ta.next))
1582 {
1583 TRANSFER (ta, 1); 1846 TRANSFER (ta, 1);
1584 return 1; 1847 return 1;
1585 } 1848 }
1586 else 1849 else
1587 return 0; 1850 return 0;
1588} 1851}
1589 1852
1590static int 1853static void
1591api_cede_notself (void)
1592{
1593 dTHX;
1594 struct transfer_args ta;
1595
1596 if (prepare_cede_notself (aTHX_ &ta))
1597 {
1598 TRANSFER (ta, 1);
1599 return 1;
1600 }
1601 else
1602 return 0;
1603}
1604
1605static void
1606api_trace (SV *coro_sv, int flags) 1854api_trace (pTHX_ SV *coro_sv, int flags)
1607{ 1855{
1608 dTHX;
1609 struct coro *coro = SvSTATE (coro_sv); 1856 struct coro *coro = SvSTATE (coro_sv);
1610 1857
1858 if (coro->flags & CF_RUNNING)
1859 croak ("cannot enable tracing on a running coroutine, caught");
1860
1611 if (flags & CC_TRACE) 1861 if (flags & CC_TRACE)
1612 { 1862 {
1613 if (!coro->cctx) 1863 if (!coro->cctx)
1614 coro->cctx = cctx_new (); 1864 coro->cctx = cctx_new_run ();
1615 else if (!(coro->cctx->flags & CC_TRACE)) 1865 else if (!(coro->cctx->flags & CC_TRACE))
1616 croak ("cannot enable tracing on coroutine with custom stack"); 1866 croak ("cannot enable tracing on coroutine with custom stack, caught");
1617 1867
1618 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1868 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1619 } 1869 }
1620 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1870 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1621 { 1871 {
… …
1626 else 1876 else
1627 coro->slot->runops = RUNOPS_DEFAULT; 1877 coro->slot->runops = RUNOPS_DEFAULT;
1628 } 1878 }
1629} 1879}
1630 1880
1881static void
1882coro_call_on_destroy (pTHX_ struct coro *coro)
1883{
1884 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1885 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1886
1887 if (on_destroyp)
1888 {
1889 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1890
1891 while (AvFILLp (on_destroy) >= 0)
1892 {
1893 dSP; /* don't disturb outer sp */
1894 SV *cb = av_pop (on_destroy);
1895
1896 PUSHMARK (SP);
1897
1898 if (statusp)
1899 {
1900 int i;
1901 AV *status = (AV *)SvRV (*statusp);
1902 EXTEND (SP, AvFILLp (status) + 1);
1903
1904 for (i = 0; i <= AvFILLp (status); ++i)
1905 PUSHs (AvARRAY (status)[i]);
1906 }
1907
1908 PUTBACK;
1909 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1910 }
1911 }
1912}
1913
1914static void
1915slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1916{
1917 int i;
1918 HV *hv = (HV *)SvRV (coro_current);
1919 AV *av = newAV ();
1920
1921 /* items are actually not so common, so optimise for this case */
1922 if (items)
1923 {
1924 av_extend (av, items - 1);
1925
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928 }
1929
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1931
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager);
1934
1935 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat;
1937
1938 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/
1941}
1942
1943/*****************************************************************************/
1944/* async pool handler */
1945
1631static int 1946static int
1632coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1947slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1633{ 1948{
1634 AV *padlist; 1949 HV *hv = (HV *)SvRV (coro_current);
1635 AV *av = (AV *)mg->mg_obj; 1950 struct coro *coro = (struct coro *)frame->data;
1636 1951
1637 abort (); 1952 if (!coro->invoke_cb)
1953 return 1; /* loop till we have invoke */
1954 else
1955 {
1956 hv_store (hv, "desc", sizeof ("desc") - 1,
1957 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1958
1959 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1960
1961 {
1962 dSP;
1963 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1964 PUTBACK;
1965 }
1966
1967 SvREFCNT_dec (GvAV (PL_defgv));
1968 GvAV (PL_defgv) = coro->invoke_av;
1969 coro->invoke_av = 0;
1970
1971 return 0;
1972 }
1973}
1974
1975static void
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{
1978 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980
1981 if (expect_true (coro->saved_deffh))
1982 {
1983 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0;
1986
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1991 coro->invoke_av = newAV ();
1992
1993 frame->prepare = prepare_nop;
1994 }
1995 else
1996 {
1997 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1999
2000 coro->prio = 0;
2001
2002 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2003 api_trace (aTHX_ coro_current, 0);
2004
2005 frame->prepare = prepare_schedule;
2006 av_push (av_async_pool, SvREFCNT_inc (hv));
2007 }
2008 }
2009 else
2010 {
2011 /* first iteration, simply fall through */
2012 frame->prepare = prepare_nop;
2013 }
2014
2015 frame->check = slf_check_pool_handler;
2016 frame->data = (void *)coro;
2017}
2018
2019/*****************************************************************************/
2020/* rouse callback */
2021
2022#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2023
2024static void
2025coro_rouse_callback (pTHX_ CV *cv)
2026{
2027 dXSARGS;
2028 SV *data = (SV *)S_GENSUB_ARG;
2029
2030 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2031 {
2032 /* first call, set args */
2033 SV *coro = SvRV (data);
2034 AV *av = newAV ();
2035
2036 SvRV_set (data, (SV *)av);
2037
2038 /* better take a full copy of the arguments */
2039 while (items--)
2040 av_store (av, items, newSVsv (ST (items)));
2041
2042 api_ready (aTHX_ coro);
2043 SvREFCNT_dec (coro);
2044 }
2045
2046 XSRETURN_EMPTY;
2047}
2048
2049static int
2050slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2051{
2052 SV *data = (SV *)frame->data;
2053
2054 if (CORO_THROW)
2055 return 0;
2056
2057 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2058 return 1;
2059
2060 /* now push all results on the stack */
2061 {
2062 dSP;
2063 AV *av = (AV *)SvRV (data);
2064 int i;
2065
2066 EXTEND (SP, AvFILLp (av) + 1);
2067 for (i = 0; i <= AvFILLp (av); ++i)
2068 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2069
2070 /* we have stolen the elements, so set length to zero and free */
2071 AvFILLp (av) = -1;
2072 av_undef (av);
2073
2074 PUTBACK;
2075 }
1638 2076
1639 return 0; 2077 return 0;
1640} 2078}
1641 2079
1642static MGVTBL coro_gensub_vtbl = { 2080static void
1643 0, 0, 0, 0, 2081slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1644 coro_gensub_free 2082{
2083 SV *cb;
2084
2085 if (items)
2086 cb = arg [0];
2087 else
2088 {
2089 struct coro *coro = SvSTATE_current;
2090
2091 if (!coro->rouse_cb)
2092 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2093
2094 cb = sv_2mortal (coro->rouse_cb);
2095 coro->rouse_cb = 0;
2096 }
2097
2098 if (!SvROK (cb)
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,");
2102
2103 {
2104 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2105 SV *data = (SV *)S_GENSUB_ARG;
2106
2107 frame->data = (void *)data;
2108 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2109 frame->check = slf_check_rouse_wait;
2110 }
2111}
2112
2113static SV *
2114coro_new_rouse_cb (pTHX)
2115{
2116 HV *hv = (HV *)SvRV (coro_current);
2117 struct coro *coro = SvSTATE_hv (hv);
2118 SV *data = newRV_inc ((SV *)hv);
2119 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2120
2121 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2122 SvREFCNT_dec (data); /* magicext increases the refcount */
2123
2124 SvREFCNT_dec (coro->rouse_cb);
2125 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2126
2127 return cb;
2128}
2129
2130/*****************************************************************************/
2131/* schedule-like-function opcode (SLF) */
2132
2133static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2134static const CV *slf_cv;
2135static SV **slf_argv;
2136static int slf_argc, slf_arga; /* count, allocated */
2137static I32 slf_ax; /* top of stack, for restore */
2138
2139/* this restores the stack in the case we patched the entersub, to */
2140/* recreate the stack frame as perl will on following calls */
2141/* since entersub cleared the stack */
2142static OP *
2143pp_restore (pTHX)
2144{
2145 int i;
2146 SV **SP = PL_stack_base + slf_ax;
2147
2148 PUSHMARK (SP);
2149
2150 EXTEND (SP, slf_argc + 1);
2151
2152 for (i = 0; i < slf_argc; ++i)
2153 PUSHs (sv_2mortal (slf_argv [i]));
2154
2155 PUSHs ((SV *)CvGV (slf_cv));
2156
2157 RETURNOP (slf_restore.op_first);
2158}
2159
2160static void
2161slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2162{
2163 SV **arg = (SV **)slf_frame.data;
2164
2165 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2166}
2167
2168static void
2169slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2170{
2171 if (items != 2)
2172 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2173
2174 frame->prepare = slf_prepare_transfer;
2175 frame->check = slf_check_nop;
2176 frame->data = (void *)arg; /* let's hope it will stay valid */
2177}
2178
2179static void
2180slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2181{
2182 frame->prepare = prepare_schedule;
2183 frame->check = slf_check_nop;
2184}
2185
2186static void
2187slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2188{
2189 struct coro *next = (struct coro *)slf_frame.data;
2190
2191 SvREFCNT_inc_NN (next->hv);
2192 prepare_schedule_to (aTHX_ ta, next);
2193}
2194
2195static void
2196slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 if (!items)
2199 croak ("Coro::schedule_to expects a coroutine argument, caught");
2200
2201 frame->data = (void *)SvSTATE (arg [0]);
2202 frame->prepare = slf_prepare_schedule_to;
2203 frame->check = slf_check_nop;
2204}
2205
2206static void
2207slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2208{
2209 api_ready (aTHX_ SvRV (coro_current));
2210
2211 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2212}
2213
2214static void
2215slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 frame->prepare = prepare_cede;
2218 frame->check = slf_check_nop;
2219}
2220
2221static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{
2224 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop;
2226}
2227
2228/*
2229 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same
2231 * stack offset
2232 * SLF stands for "schedule-like-function".
2233 */
2234static OP *
2235pp_slf (pTHX)
2236{
2237 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238
2239 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare))
2243 {
2244 /* first iteration */
2245 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */
2248 SV *gv = *sp;
2249
2250 /* do a quick consistency check on the "function" object, and if it isn't */
2251 /* for us, divert to the real entersub */
2252 if (SvTYPE (gv) != SVt_PVGV
2253 || !GvCV (gv)
2254 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2255 return PL_ppaddr[OP_ENTERSUB](aTHX);
2256
2257 if (!(PL_op->op_flags & OPf_STACKED))
2258 {
2259 /* ampersand-form of call, use @_ instead of stack */
2260 AV *av = GvAV (PL_defgv);
2261 arg = AvARRAY (av);
2262 items = AvFILLp (av) + 1;
2263 }
2264
2265 /* now call the init function, which needs to set up slf_frame */
2266 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2267 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2268
2269 /* pop args */
2270 SP = PL_stack_base + POPMARK;
2271
2272 PUTBACK;
2273 }
2274
2275 /* now that we have a slf_frame, interpret it! */
2276 /* we use a callback system not to make the code needlessly */
2277 /* complicated, but so we can run multiple perl coros from one cctx */
2278
2279 do
2280 {
2281 struct coro_transfer_args ta;
2282
2283 slf_frame.prepare (aTHX_ &ta);
2284 TRANSFER (ta, 0);
2285
2286 checkmark = PL_stack_sp - PL_stack_base;
2287 }
2288 while (slf_frame.check (aTHX_ &slf_frame));
2289
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291
2292 /* exception handling */
2293 if (expect_false (CORO_THROW))
2294 {
2295 SV *exception = sv_2mortal (CORO_THROW);
2296
2297 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception);
2299 croak (0);
2300 }
2301
2302 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR)
2305 {
2306 dSP;
2307 SV **bot = PL_stack_base + checkmark;
2308
2309 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */
2312 bot [1] = *sp;
2313
2314 SP = bot + 1;
2315
2316 PUTBACK;
2317 }
2318
2319 return NORMAL;
2320}
2321
2322static void
2323api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2324{
2325 int i;
2326 SV **arg = PL_stack_base + ax;
2327 int items = PL_stack_sp - arg + 1;
2328
2329 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2330
2331 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2332 && PL_op->op_ppaddr != pp_slf)
2333 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2334
2335 CvFLAGS (cv) |= CVf_SLF;
2336 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2337 slf_cv = cv;
2338
2339 /* we patch the op, and then re-run the whole call */
2340 /* we have to put the same argument on the stack for this to work */
2341 /* and this will be done by pp_restore */
2342 slf_restore.op_next = (OP *)&slf_restore;
2343 slf_restore.op_type = OP_CUSTOM;
2344 slf_restore.op_ppaddr = pp_restore;
2345 slf_restore.op_first = PL_op;
2346
2347 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2348
2349 if (PL_op->op_flags & OPf_STACKED)
2350 {
2351 if (items > slf_arga)
2352 {
2353 slf_arga = items;
2354 free (slf_argv);
2355 slf_argv = malloc (slf_arga * sizeof (SV *));
2356 }
2357
2358 slf_argc = items;
2359
2360 for (i = 0; i < items; ++i)
2361 slf_argv [i] = SvREFCNT_inc (arg [i]);
2362 }
2363 else
2364 slf_argc = 0;
2365
2366 PL_op->op_ppaddr = pp_slf;
2367 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2368
2369 PL_op = (OP *)&slf_restore;
2370}
2371
2372/*****************************************************************************/
2373/* dynamic wind */
2374
2375static void
2376on_enterleave_call (pTHX_ SV *cb)
2377{
2378 dSP;
2379
2380 PUSHSTACK;
2381
2382 PUSHMARK (SP);
2383 PUTBACK;
2384 call_sv (cb, G_VOID | G_DISCARD);
2385 SPAGAIN;
2386
2387 POPSTACK;
2388}
2389
2390static SV *
2391coro_avp_pop_and_free (pTHX_ AV **avp)
2392{
2393 AV *av = *avp;
2394 SV *res = av_pop (av);
2395
2396 if (AvFILLp (av) < 0)
2397 {
2398 *avp = 0;
2399 SvREFCNT_dec (av);
2400 }
2401
2402 return res;
2403}
2404
2405static void
2406coro_pop_on_enter (pTHX_ void *coro)
2407{
2408 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2409 SvREFCNT_dec (cb);
2410}
2411
2412static void
2413coro_pop_on_leave (pTHX_ void *coro)
2414{
2415 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2416 on_enterleave_call (aTHX_ sv_2mortal (cb));
2417}
2418
2419/*****************************************************************************/
2420/* PerlIO::cede */
2421
2422typedef struct
2423{
2424 PerlIOBuf base;
2425 NV next, every;
2426} PerlIOCede;
2427
2428static IV
2429PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2430{
2431 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2432
2433 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2434 self->next = nvtime () + self->every;
2435
2436 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2437}
2438
2439static SV *
2440PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2441{
2442 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2443
2444 return newSVnv (self->every);
2445}
2446
2447static IV
2448PerlIOCede_flush (pTHX_ PerlIO *f)
2449{
2450 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2451 double now = nvtime ();
2452
2453 if (now >= self->next)
2454 {
2455 api_cede (aTHX);
2456 self->next = now + self->every;
2457 }
2458
2459 return PerlIOBuf_flush (aTHX_ f);
2460}
2461
2462static PerlIO_funcs PerlIO_cede =
2463{
2464 sizeof(PerlIO_funcs),
2465 "cede",
2466 sizeof(PerlIOCede),
2467 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2468 PerlIOCede_pushed,
2469 PerlIOBuf_popped,
2470 PerlIOBuf_open,
2471 PerlIOBase_binmode,
2472 PerlIOCede_getarg,
2473 PerlIOBase_fileno,
2474 PerlIOBuf_dup,
2475 PerlIOBuf_read,
2476 PerlIOBuf_unread,
2477 PerlIOBuf_write,
2478 PerlIOBuf_seek,
2479 PerlIOBuf_tell,
2480 PerlIOBuf_close,
2481 PerlIOCede_flush,
2482 PerlIOBuf_fill,
2483 PerlIOBase_eof,
2484 PerlIOBase_error,
2485 PerlIOBase_clearerr,
2486 PerlIOBase_setlinebuf,
2487 PerlIOBuf_get_base,
2488 PerlIOBuf_bufsiz,
2489 PerlIOBuf_get_ptr,
2490 PerlIOBuf_get_cnt,
2491 PerlIOBuf_set_ptrcnt,
1645}; 2492};
1646 2493
2494/*****************************************************************************/
2495/* Coro::Semaphore & Coro::Signal */
2496
2497static SV *
2498coro_waitarray_new (pTHX_ int count)
2499{
2500 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2501 AV *av = newAV ();
2502 SV **ary;
2503
2504 /* unfortunately, building manually saves memory */
2505 Newx (ary, 2, SV *);
2506 AvALLOC (av) = ary;
2507#if PERL_VERSION_ATLEAST (5,10,0)
2508 AvARRAY (av) = ary;
2509#else
2510 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2511 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2512 SvPVX ((SV *)av) = (char *)ary;
2513#endif
2514 AvMAX (av) = 1;
2515 AvFILLp (av) = 0;
2516 ary [0] = newSViv (count);
2517
2518 return newRV_noinc ((SV *)av);
2519}
2520
2521/* semaphore */
2522
2523static void
2524coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2525{
2526 SV *count_sv = AvARRAY (av)[0];
2527 IV count = SvIVX (count_sv);
2528
2529 count += adjust;
2530 SvIVX (count_sv) = count;
2531
2532 /* now wake up as many waiters as are expected to lock */
2533 while (count > 0 && AvFILLp (av) > 0)
2534 {
2535 SV *cb;
2536
2537 /* swap first two elements so we can shift a waiter */
2538 AvARRAY (av)[0] = AvARRAY (av)[1];
2539 AvARRAY (av)[1] = count_sv;
2540 cb = av_shift (av);
2541
2542 if (SvOBJECT (cb))
2543 {
2544 api_ready (aTHX_ cb);
2545 --count;
2546 }
2547 else if (SvTYPE (cb) == SVt_PVCV)
2548 {
2549 dSP;
2550 PUSHMARK (SP);
2551 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2552 PUTBACK;
2553 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2554 }
2555
2556 SvREFCNT_dec (cb);
2557 }
2558}
2559
2560static void
2561coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2562{
2563 /* call $sem->adjust (0) to possibly wake up some other waiters */
2564 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2565}
2566
2567static int
2568slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2569{
2570 AV *av = (AV *)frame->data;
2571 SV *count_sv = AvARRAY (av)[0];
2572
2573 /* if we are about to throw, don't actually acquire the lock, just throw */
2574 if (CORO_THROW)
2575 return 0;
2576 else if (SvIVX (count_sv) > 0)
2577 {
2578 SvSTATE_current->on_destroy = 0;
2579
2580 if (acquire)
2581 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2582 else
2583 coro_semaphore_adjust (aTHX_ av, 0);
2584
2585 return 0;
2586 }
2587 else
2588 {
2589 int i;
2590 /* if we were woken up but can't down, we look through the whole */
2591 /* waiters list and only add us if we aren't in there already */
2592 /* this avoids some degenerate memory usage cases */
2593
2594 for (i = 1; i <= AvFILLp (av); ++i)
2595 if (AvARRAY (av)[i] == SvRV (coro_current))
2596 return 1;
2597
2598 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2599 return 1;
2600 }
2601}
2602
2603static int
2604slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2605{
2606 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2607}
2608
2609static int
2610slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2611{
2612 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2613}
2614
2615static void
2616slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2617{
2618 AV *av = (AV *)SvRV (arg [0]);
2619
2620 if (SvIVX (AvARRAY (av)[0]) > 0)
2621 {
2622 frame->data = (void *)av;
2623 frame->prepare = prepare_nop;
2624 }
2625 else
2626 {
2627 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2628
2629 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2630 frame->prepare = prepare_schedule;
2631
2632 /* to avoid race conditions when a woken-up coro gets terminated */
2633 /* we arrange for a temporary on_destroy that calls adjust (0) */
2634 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2635 }
2636}
2637
2638static void
2639slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2640{
2641 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2642 frame->check = slf_check_semaphore_down;
2643}
2644
2645static void
2646slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2647{
2648 if (items >= 2)
2649 {
2650 /* callback form */
2651 AV *av = (AV *)SvRV (arg [0]);
2652 SV *cb_cv = s_get_cv_croak (arg [1]);
2653
2654 av_push (av, SvREFCNT_inc_NN (cb_cv));
2655
2656 if (SvIVX (AvARRAY (av)[0]) > 0)
2657 coro_semaphore_adjust (aTHX_ av, 0);
2658
2659 frame->prepare = prepare_nop;
2660 frame->check = slf_check_nop;
2661 }
2662 else
2663 {
2664 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2665 frame->check = slf_check_semaphore_wait;
2666 }
2667}
2668
2669/* signal */
2670
2671static void
2672coro_signal_wake (pTHX_ AV *av, int count)
2673{
2674 SvIVX (AvARRAY (av)[0]) = 0;
2675
2676 /* now signal count waiters */
2677 while (count > 0 && AvFILLp (av) > 0)
2678 {
2679 SV *cb;
2680
2681 /* swap first two elements so we can shift a waiter */
2682 cb = AvARRAY (av)[0];
2683 AvARRAY (av)[0] = AvARRAY (av)[1];
2684 AvARRAY (av)[1] = cb;
2685
2686 cb = av_shift (av);
2687
2688 if (SvTYPE (cb) == SVt_PVCV)
2689 {
2690 dSP;
2691 PUSHMARK (SP);
2692 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2693 PUTBACK;
2694 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2695 }
2696 else
2697 {
2698 api_ready (aTHX_ cb);
2699 sv_setiv (cb, 0); /* signal waiter */
2700 }
2701
2702 SvREFCNT_dec (cb);
2703
2704 --count;
2705 }
2706}
2707
2708static int
2709slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2710{
2711 /* if we are about to throw, also stop waiting */
2712 return SvROK ((SV *)frame->data) && !CORO_THROW;
2713}
2714
2715static void
2716slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2717{
2718 AV *av = (AV *)SvRV (arg [0]);
2719
2720 if (items >= 2)
2721 {
2722 SV *cb_cv = s_get_cv_croak (arg [1]);
2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724
2725 if (SvIVX (AvARRAY (av)[0]))
2726 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2727
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else if (SvIVX (AvARRAY (av)[0]))
2732 {
2733 SvIVX (AvARRAY (av)[0]) = 0;
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2740
2741 av_push (av, waiter);
2742
2743 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2744 frame->prepare = prepare_schedule;
2745 frame->check = slf_check_signal_wait;
2746 }
2747}
2748
2749/*****************************************************************************/
2750/* Coro::AIO */
2751
2752#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2753
2754/* helper storage struct */
2755struct io_state
2756{
2757 int errorno;
2758 I32 laststype; /* U16 in 5.10.0 */
2759 int laststatval;
2760 Stat_t statcache;
2761};
2762
2763static void
2764coro_aio_callback (pTHX_ CV *cv)
2765{
2766 dXSARGS;
2767 AV *state = (AV *)S_GENSUB_ARG;
2768 SV *coro = av_pop (state);
2769 SV *data_sv = newSV (sizeof (struct io_state));
2770
2771 av_extend (state, items - 1);
2772
2773 sv_upgrade (data_sv, SVt_PV);
2774 SvCUR_set (data_sv, sizeof (struct io_state));
2775 SvPOK_only (data_sv);
2776
2777 {
2778 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2779
2780 data->errorno = errno;
2781 data->laststype = PL_laststype;
2782 data->laststatval = PL_laststatval;
2783 data->statcache = PL_statcache;
2784 }
2785
2786 /* now build the result vector out of all the parameters and the data_sv */
2787 {
2788 int i;
2789
2790 for (i = 0; i < items; ++i)
2791 av_push (state, SvREFCNT_inc_NN (ST (i)));
2792 }
2793
2794 av_push (state, data_sv);
2795
2796 api_ready (aTHX_ coro);
2797 SvREFCNT_dec (coro);
2798 SvREFCNT_dec ((AV *)state);
2799}
2800
2801static int
2802slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2803{
2804 AV *state = (AV *)frame->data;
2805
2806 /* if we are about to throw, return early */
2807 /* this does not cancel the aio request, but at least */
2808 /* it quickly returns */
2809 if (CORO_THROW)
2810 return 0;
2811
2812 /* one element that is an RV? repeat! */
2813 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2814 return 1;
2815
2816 /* restore status */
2817 {
2818 SV *data_sv = av_pop (state);
2819 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2820
2821 errno = data->errorno;
2822 PL_laststype = data->laststype;
2823 PL_laststatval = data->laststatval;
2824 PL_statcache = data->statcache;
2825
2826 SvREFCNT_dec (data_sv);
2827 }
2828
2829 /* push result values */
2830 {
2831 dSP;
2832 int i;
2833
2834 EXTEND (SP, AvFILLp (state) + 1);
2835 for (i = 0; i <= AvFILLp (state); ++i)
2836 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2837
2838 PUTBACK;
2839 }
2840
2841 return 0;
2842}
2843
2844static void
2845slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2846{
2847 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2848 SV *coro_hv = SvRV (coro_current);
2849 struct coro *coro = SvSTATE_hv (coro_hv);
2850
2851 /* put our coroutine id on the state arg */
2852 av_push (state, SvREFCNT_inc_NN (coro_hv));
2853
2854 /* first see whether we have a non-zero priority and set it as AIO prio */
2855 if (coro->prio)
2856 {
2857 dSP;
2858
2859 static SV *prio_cv;
2860 static SV *prio_sv;
2861
2862 if (expect_false (!prio_cv))
2863 {
2864 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2865 prio_sv = newSViv (0);
2866 }
2867
2868 PUSHMARK (SP);
2869 sv_setiv (prio_sv, coro->prio);
2870 XPUSHs (prio_sv);
2871
2872 PUTBACK;
2873 call_sv (prio_cv, G_VOID | G_DISCARD);
2874 }
2875
2876 /* now call the original request */
2877 {
2878 dSP;
2879 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2880 int i;
2881
2882 PUSHMARK (SP);
2883
2884 /* first push all args to the stack */
2885 EXTEND (SP, items + 1);
2886
2887 for (i = 0; i < items; ++i)
2888 PUSHs (arg [i]);
2889
2890 /* now push the callback closure */
2891 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2892
2893 /* now call the AIO function - we assume our request is uncancelable */
2894 PUTBACK;
2895 call_sv ((SV *)req, G_VOID | G_DISCARD);
2896 }
2897
2898 /* now that the requets is going, we loop toll we have a result */
2899 frame->data = (void *)state;
2900 frame->prepare = prepare_schedule;
2901 frame->check = slf_check_aio_req;
2902}
2903
2904static void
2905coro_aio_req_xs (pTHX_ CV *cv)
2906{
2907 dXSARGS;
2908
2909 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2910
2911 XSRETURN_EMPTY;
2912}
2913
2914/*****************************************************************************/
2915
2916#if CORO_CLONE
2917# include "clone.c"
2918#endif
2919
2920/*****************************************************************************/
2921
2922static SV *
2923coro_new (HV *stash, SV **argv, int argc, int is_coro)
2924{
2925 SV *coro_sv;
2926 struct coro *coro;
2927 MAGIC *mg;
2928 HV *hv;
2929 SV *cb;
2930 int i;
2931
2932 if (argc > 0)
2933 {
2934 cb = s_get_cv_croak (argv [0]);
2935
2936 if (!is_coro)
2937 {
2938 if (CvISXSUB (cb))
2939 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2940
2941 if (!CvROOT (cb))
2942 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2943 }
2944 }
2945
2946 Newz (0, coro, 1, struct coro);
2947 coro->args = newAV ();
2948 coro->flags = CF_NEW;
2949
2950 if (coro_first) coro_first->prev = coro;
2951 coro->next = coro_first;
2952 coro_first = coro;
2953
2954 coro->hv = hv = newHV ();
2955 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2956 mg->mg_flags |= MGf_DUP;
2957 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
2958
2959 if (argc > 0)
2960 {
2961 av_extend (coro->args, argc + is_coro - 1);
2962
2963 if (is_coro)
2964 {
2965 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2966 cb = (SV *)cv_coro_run;
2967 }
2968
2969 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2970
2971 for (i = 1; i < argc; i++)
2972 av_push (coro->args, newSVsv (argv [i]));
2973 }
2974
2975 return coro_sv;
2976}
2977
1647MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2978MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1648 2979
1649PROTOTYPES: DISABLE 2980PROTOTYPES: DISABLE
1650 2981
1651BOOT: 2982BOOT:
1652{ 2983{
1653#ifdef USE_ITHREADS 2984#ifdef USE_ITHREADS
1654 MUTEX_INIT (&coro_mutex); 2985# if CORO_PTHREAD
2986 coro_thx = PERL_GET_CONTEXT;
2987# endif
1655#endif 2988#endif
1656 BOOT_PAGESIZE; 2989 BOOT_PAGESIZE;
2990
2991 cctx_current = cctx_new_empty ();
1657 2992
1658 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2993 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1659 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2994 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1660 2995
1661 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2996 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1677 main_top_env = PL_top_env; 3012 main_top_env = PL_top_env;
1678 3013
1679 while (main_top_env->je_prev) 3014 while (main_top_env->je_prev)
1680 main_top_env = main_top_env->je_prev; 3015 main_top_env = main_top_env->je_prev;
1681 3016
3017 {
3018 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3019
3020 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3021 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3022
3023 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3024 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3025 }
3026
1682 coroapi.ver = CORO_API_VERSION; 3027 coroapi.ver = CORO_API_VERSION;
1683 coroapi.rev = CORO_API_REVISION; 3028 coroapi.rev = CORO_API_REVISION;
3029
1684 coroapi.transfer = api_transfer; 3030 coroapi.transfer = api_transfer;
1685 3031
3032 coroapi.sv_state = SvSTATE_;
3033 coroapi.execute_slf = api_execute_slf;
3034 coroapi.prepare_nop = prepare_nop;
3035 coroapi.prepare_schedule = prepare_schedule;
3036 coroapi.prepare_cede = prepare_cede;
3037 coroapi.prepare_cede_notself = prepare_cede_notself;
3038
3039 {
3040 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3041
3042 if (!svp) croak ("Time::HiRes is required");
3043 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3044
3045 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3046
3047 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3048 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
3049 }
3050
1686 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3051 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1687} 3052}
1688 3053
1689SV * 3054SV *
1690new (char *klass, ...) 3055new (SV *klass, ...)
3056 ALIAS:
3057 Coro::new = 1
1691 CODE: 3058 CODE:
1692{ 3059 RETVAL = coro_new (ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1693 struct coro *coro; 3060 OUTPUT:
1694 MAGIC *mg;
1695 HV *hv;
1696 int i;
1697
1698 Newz (0, coro, 1, struct coro);
1699 coro->args = newAV ();
1700 coro->flags = CF_NEW;
1701
1702 if (coro_first) coro_first->prev = coro;
1703 coro->next = coro_first;
1704 coro_first = coro;
1705
1706 coro->hv = hv = newHV ();
1707 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1708 mg->mg_flags |= MGf_DUP;
1709 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1710
1711 av_extend (coro->args, items - 1);
1712 for (i = 1; i < items; i++)
1713 av_push (coro->args, newSVsv (ST (i)));
1714}
1715 OUTPUT:
1716 RETVAL 3061 RETVAL
1717 3062
1718# these not obviously related functions are all rolled into the same xs
1719# function to increase chances that they all will call transfer with the same
1720# stack offset
1721void 3063void
1722_set_stacklevel (...) 3064transfer (...)
1723 ALIAS: 3065 PROTOTYPE: $$
1724 Coro::State::transfer = 1 3066 CODE:
1725 Coro::schedule = 2 3067 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1726 Coro::cede = 3
1727 Coro::cede_notself = 4
1728 CODE:
1729{
1730 struct transfer_args ta;
1731
1732 PUTBACK;
1733 switch (ix)
1734 {
1735 case 0:
1736 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1737 ta.next = 0;
1738 break;
1739
1740 case 1:
1741 if (items != 2)
1742 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1743
1744 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1745 break;
1746
1747 case 2:
1748 prepare_schedule (aTHX_ &ta);
1749 break;
1750
1751 case 3:
1752 prepare_cede (aTHX_ &ta);
1753 break;
1754
1755 case 4:
1756 if (!prepare_cede_notself (aTHX_ &ta))
1757 XSRETURN_EMPTY;
1758
1759 break;
1760 }
1761 SPAGAIN;
1762
1763 BARRIER;
1764 PUTBACK;
1765 TRANSFER (ta, 0);
1766 SPAGAIN; /* might be the sp of a different coroutine now */
1767 /* be extra careful not to ever do anything after TRANSFER */
1768}
1769 3068
1770bool 3069bool
1771_destroy (SV *coro_sv) 3070_destroy (SV *coro_sv)
1772 CODE: 3071 CODE:
1773 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3072 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1778_exit (int code) 3077_exit (int code)
1779 PROTOTYPE: $ 3078 PROTOTYPE: $
1780 CODE: 3079 CODE:
1781 _exit (code); 3080 _exit (code);
1782 3081
3082SV *
3083clone (Coro::State coro)
3084 CODE:
3085{
3086#if CORO_CLONE
3087 struct coro *ncoro = coro_clone (aTHX_ coro);
3088 MAGIC *mg;
3089 /* TODO: too much duplication */
3090 ncoro->hv = newHV ();
3091 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3092 mg->mg_flags |= MGf_DUP;
3093 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3094#else
3095 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3096#endif
3097}
3098 OUTPUT:
3099 RETVAL
3100
1783int 3101int
1784cctx_stacksize (int new_stacksize = 0) 3102cctx_stacksize (int new_stacksize = 0)
3103 PROTOTYPE: ;$
1785 CODE: 3104 CODE:
1786 RETVAL = coro_stacksize; 3105 RETVAL = cctx_stacksize;
1787 if (new_stacksize) 3106 if (new_stacksize)
3107 {
1788 coro_stacksize = new_stacksize; 3108 cctx_stacksize = new_stacksize;
3109 ++cctx_gen;
3110 }
1789 OUTPUT: 3111 OUTPUT:
1790 RETVAL 3112 RETVAL
1791 3113
1792int 3114int
3115cctx_max_idle (int max_idle = 0)
3116 PROTOTYPE: ;$
3117 CODE:
3118 RETVAL = cctx_max_idle;
3119 if (max_idle > 1)
3120 cctx_max_idle = max_idle;
3121 OUTPUT:
3122 RETVAL
3123
3124int
1793cctx_count () 3125cctx_count ()
3126 PROTOTYPE:
1794 CODE: 3127 CODE:
1795 RETVAL = cctx_count; 3128 RETVAL = cctx_count;
1796 OUTPUT: 3129 OUTPUT:
1797 RETVAL 3130 RETVAL
1798 3131
1799int 3132int
1800cctx_idle () 3133cctx_idle ()
3134 PROTOTYPE:
1801 CODE: 3135 CODE:
1802 RETVAL = cctx_idle; 3136 RETVAL = cctx_idle;
1803 OUTPUT: 3137 OUTPUT:
1804 RETVAL 3138 RETVAL
1805 3139
1806void 3140void
1807list () 3141list ()
3142 PROTOTYPE:
1808 PPCODE: 3143 PPCODE:
1809{ 3144{
1810 struct coro *coro; 3145 struct coro *coro;
1811 for (coro = coro_first; coro; coro = coro->next) 3146 for (coro = coro_first; coro; coro = coro->next)
1812 if (coro->hv) 3147 if (coro->hv)
… …
1817call (Coro::State coro, SV *coderef) 3152call (Coro::State coro, SV *coderef)
1818 ALIAS: 3153 ALIAS:
1819 eval = 1 3154 eval = 1
1820 CODE: 3155 CODE:
1821{ 3156{
1822 if (coro->mainstack) 3157 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1823 { 3158 {
1824 struct coro temp; 3159 struct coro *current = SvSTATE_current;
1825 3160
1826 if (!(coro->flags & CF_RUNNING)) 3161 if (current != coro)
1827 { 3162 {
1828 PUTBACK; 3163 PUTBACK;
1829 save_perl (aTHX_ &temp); 3164 save_perl (aTHX_ current);
1830 load_perl (aTHX_ coro); 3165 load_perl (aTHX_ coro);
3166 SPAGAIN;
1831 } 3167 }
1832 3168
1833 {
1834 dSP;
1835 ENTER;
1836 SAVETMPS;
1837 PUTBACK;
1838 PUSHSTACK; 3169 PUSHSTACK;
3170
1839 PUSHMARK (SP); 3171 PUSHMARK (SP);
3172 PUTBACK;
1840 3173
1841 if (ix) 3174 if (ix)
1842 eval_sv (coderef, 0); 3175 eval_sv (coderef, 0);
1843 else 3176 else
1844 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3177 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1845 3178
1846 POPSTACK; 3179 POPSTACK;
1847 SPAGAIN; 3180 SPAGAIN;
1848 FREETMPS;
1849 LEAVE;
1850 PUTBACK;
1851 }
1852 3181
1853 if (!(coro->flags & CF_RUNNING)) 3182 if (current != coro)
1854 { 3183 {
3184 PUTBACK;
1855 save_perl (aTHX_ coro); 3185 save_perl (aTHX_ coro);
1856 load_perl (aTHX_ &temp); 3186 load_perl (aTHX_ current);
1857 SPAGAIN; 3187 SPAGAIN;
1858 } 3188 }
1859 } 3189 }
1860} 3190}
1861 3191
… …
1865 ALIAS: 3195 ALIAS:
1866 is_ready = CF_READY 3196 is_ready = CF_READY
1867 is_running = CF_RUNNING 3197 is_running = CF_RUNNING
1868 is_new = CF_NEW 3198 is_new = CF_NEW
1869 is_destroyed = CF_DESTROYED 3199 is_destroyed = CF_DESTROYED
3200 is_suspended = CF_SUSPENDED
1870 CODE: 3201 CODE:
1871 RETVAL = boolSV (coro->flags & ix); 3202 RETVAL = boolSV (coro->flags & ix);
1872 OUTPUT: 3203 OUTPUT:
1873 RETVAL 3204 RETVAL
1874 3205
1875void 3206void
3207throw (Coro::State self, SV *throw = &PL_sv_undef)
3208 PROTOTYPE: $;$
3209 CODE:
3210{
3211 struct coro *current = SvSTATE_current;
3212 SV **throwp = self == current ? &CORO_THROW : &self->except;
3213 SvREFCNT_dec (*throwp);
3214 SvGETMAGIC (throw);
3215 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3216}
3217
3218void
1876api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3219api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3220 PROTOTYPE: $;$
3221 C_ARGS: aTHX_ coro, flags
1877 3222
1878SV * 3223SV *
1879has_cctx (Coro::State coro) 3224has_cctx (Coro::State coro)
1880 PROTOTYPE: $ 3225 PROTOTYPE: $
1881 CODE: 3226 CODE:
1882 RETVAL = boolSV (!!coro->cctx); 3227 /* maybe manage the running flag differently */
3228 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1883 OUTPUT: 3229 OUTPUT:
1884 RETVAL 3230 RETVAL
1885 3231
1886int 3232int
1887is_traced (Coro::State coro) 3233is_traced (Coro::State coro)
… …
1889 CODE: 3235 CODE:
1890 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3236 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1891 OUTPUT: 3237 OUTPUT:
1892 RETVAL 3238 RETVAL
1893 3239
1894IV 3240UV
1895rss (Coro::State coro) 3241rss (Coro::State coro)
1896 PROTOTYPE: $ 3242 PROTOTYPE: $
1897 ALIAS: 3243 ALIAS:
1898 usecount = 1 3244 usecount = 1
1899 CODE: 3245 CODE:
… …
1905 OUTPUT: 3251 OUTPUT:
1906 RETVAL 3252 RETVAL
1907 3253
1908void 3254void
1909force_cctx () 3255force_cctx ()
3256 PROTOTYPE:
1910 CODE: 3257 CODE:
1911 struct coro *coro = SvSTATE (coro_current);
1912 coro->cctx->idle_sp = 0; 3258 cctx_current->idle_sp = 0;
1913
1914void
1915throw (Coro::State self, SV *throw = &PL_sv_undef)
1916 PROTOTYPE: $;$
1917 CODE:
1918 SvREFCNT_dec (self->throw);
1919 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1920 3259
1921void 3260void
1922swap_defsv (Coro::State self) 3261swap_defsv (Coro::State self)
1923 PROTOTYPE: $ 3262 PROTOTYPE: $
1924 ALIAS: 3263 ALIAS:
1925 swap_defav = 1 3264 swap_defav = 1
1926 CODE: 3265 CODE:
1927 if (!self->slot) 3266 if (!self->slot)
1928 croak ("cannot swap state with coroutine that has no saved state"); 3267 croak ("cannot swap state with coroutine that has no saved state,");
1929 else 3268 else
1930 { 3269 {
1931 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3270 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1932 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3271 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1933 3272
1934 SV *tmp = *src; *src = *dst; *dst = tmp; 3273 SV *tmp = *src; *src = *dst; *dst = tmp;
1935 } 3274 }
1936 3275
3276void
3277cancel (Coro::State self)
3278 CODE:
3279 coro_state_destroy (aTHX_ self);
3280 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3281
3282
3283SV *
3284enable_times (int enabled = enable_times)
3285 CODE:
3286{
3287 RETVAL = boolSV (enable_times);
3288
3289 if (enabled != enable_times)
3290 {
3291 enable_times = enabled;
3292
3293 coro_times_update ();
3294 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3295 }
3296}
3297 OUTPUT:
3298 RETVAL
3299
3300void
3301times (Coro::State self)
3302 PPCODE:
3303{
3304 struct coro *current = SvSTATE (coro_current);
3305
3306 if (expect_false (current == self))
3307 {
3308 coro_times_update ();
3309 coro_times_add (SvSTATE (coro_current));
3310 }
3311
3312 EXTEND (SP, 2);
3313 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3314 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3315
3316 if (expect_false (current == self))
3317 coro_times_sub (SvSTATE (coro_current));
3318}
3319
1937MODULE = Coro::State PACKAGE = Coro 3320MODULE = Coro::State PACKAGE = Coro
1938 3321
1939BOOT: 3322BOOT:
1940{ 3323{
1941 int i;
1942
1943 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1944 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3324 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1945 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3325 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1946 3326 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3327 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
1947 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3328 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1948 SvREADONLY_on (coro_current); 3329 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3330 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3331 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3332 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3333
3334 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3335 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3336 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3337 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1949 3338
1950 coro_stash = gv_stashpv ("Coro", TRUE); 3339 coro_stash = gv_stashpv ("Coro", TRUE);
1951 3340
1952 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3341 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1953 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3342 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1954 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3343 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1955 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3344 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1956 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3345 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1957 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3346 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1958
1959 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1960 coro_ready[i] = newAV ();
1961 3347
1962 { 3348 {
1963 SV *sv = perl_get_sv ("Coro::API", TRUE); 3349 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1964 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1965 3350
1966 coroapi.schedule = api_schedule; 3351 coroapi.schedule = api_schedule;
3352 coroapi.schedule_to = api_schedule_to;
1967 coroapi.cede = api_cede; 3353 coroapi.cede = api_cede;
1968 coroapi.cede_notself = api_cede_notself; 3354 coroapi.cede_notself = api_cede_notself;
1969 coroapi.ready = api_ready; 3355 coroapi.ready = api_ready;
1970 coroapi.is_ready = api_is_ready; 3356 coroapi.is_ready = api_is_ready;
1971 coroapi.nready = &coro_nready; 3357 coroapi.nready = coro_nready;
1972 coroapi.current = coro_current; 3358 coroapi.current = coro_current;
1973 3359
1974 GCoroAPI = &coroapi; 3360 /*GCoroAPI = &coroapi;*/
1975 sv_setiv (sv, (IV)&coroapi); 3361 sv_setiv (sv, (IV)&coroapi);
1976 SvREADONLY_on (sv); 3362 SvREADONLY_on (sv);
1977 } 3363 }
1978} 3364}
3365
3366SV *
3367async (...)
3368 PROTOTYPE: &@
3369 CODE:
3370 RETVAL = coro_new (coro_stash, &ST (0), items, 1);
3371 api_ready (RETVAL);
3372 OUTPUT:
3373 RETVAL
3374
3375void
3376terminate (...)
3377 CODE:
3378 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3379
3380void
3381schedule (...)
3382 CODE:
3383 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3384
3385void
3386schedule_to (...)
3387 CODE:
3388 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3389
3390void
3391cede_to (...)
3392 CODE:
3393 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3394
3395void
3396cede (...)
3397 CODE:
3398 CORO_EXECUTE_SLF_XS (slf_init_cede);
3399
3400void
3401cede_notself (...)
3402 CODE:
3403 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1979 3404
1980void 3405void
1981_set_current (SV *current) 3406_set_current (SV *current)
1982 PROTOTYPE: $ 3407 PROTOTYPE: $
1983 CODE: 3408 CODE:
1984 SvREFCNT_dec (SvRV (coro_current)); 3409 SvREFCNT_dec (SvRV (coro_current));
1985 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3410 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1986 3411
1987void 3412void
1988_set_readyhook (SV *hook) 3413_set_readyhook (SV *hook)
1989 PROTOTYPE: $ 3414 PROTOTYPE: $
1990 CODE: 3415 CODE:
1991 LOCK;
1992 SvREFCNT_dec (coro_readyhook); 3416 SvREFCNT_dec (coro_readyhook);
3417 SvGETMAGIC (hook);
3418 if (SvOK (hook))
3419 {
1993 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3420 coro_readyhook = newSVsv (hook);
1994 UNLOCK; 3421 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3422 }
3423 else
3424 {
3425 coro_readyhook = 0;
3426 CORO_READYHOOK = 0;
3427 }
1995 3428
1996int 3429int
1997prio (Coro::State coro, int newprio = 0) 3430prio (Coro::State coro, int newprio = 0)
3431 PROTOTYPE: $;$
1998 ALIAS: 3432 ALIAS:
1999 nice = 1 3433 nice = 1
2000 CODE: 3434 CODE:
2001{ 3435{
2002 RETVAL = coro->prio; 3436 RETVAL = coro->prio;
… …
2004 if (items > 1) 3438 if (items > 1)
2005 { 3439 {
2006 if (ix) 3440 if (ix)
2007 newprio = coro->prio - newprio; 3441 newprio = coro->prio - newprio;
2008 3442
2009 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3443 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2010 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3444 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2011 3445
2012 coro->prio = newprio; 3446 coro->prio = newprio;
2013 } 3447 }
2014} 3448}
2015 OUTPUT: 3449 OUTPUT:
… …
2017 3451
2018SV * 3452SV *
2019ready (SV *self) 3453ready (SV *self)
2020 PROTOTYPE: $ 3454 PROTOTYPE: $
2021 CODE: 3455 CODE:
2022 RETVAL = boolSV (api_ready (self)); 3456 RETVAL = boolSV (api_ready (aTHX_ self));
2023 OUTPUT: 3457 OUTPUT:
2024 RETVAL 3458 RETVAL
2025 3459
2026int 3460int
2027nready (...) 3461nready (...)
… …
2029 CODE: 3463 CODE:
2030 RETVAL = coro_nready; 3464 RETVAL = coro_nready;
2031 OUTPUT: 3465 OUTPUT:
2032 RETVAL 3466 RETVAL
2033 3467
2034# for async_pool speedup
2035void 3468void
2036_pool_1 (SV *cb) 3469suspend (Coro::State self)
3470 PROTOTYPE: $
2037 CODE: 3471 CODE:
2038{ 3472 self->flags |= CF_SUSPENDED;
2039 struct coro *coro = SvSTATE (coro_current);
2040 HV *hv = (HV *)SvRV (coro_current);
2041 AV *defav = GvAV (PL_defgv);
2042 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2043 AV *invoke_av;
2044 int i, len;
2045 3473
2046 if (!invoke) 3474void
3475resume (Coro::State self)
3476 PROTOTYPE: $
3477 CODE:
3478 self->flags &= ~CF_SUSPENDED;
3479
3480void
3481_pool_handler (...)
3482 CODE:
3483 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3484
3485void
3486async_pool (SV *cv, ...)
3487 PROTOTYPE: &@
3488 PPCODE:
3489{
3490 HV *hv = (HV *)av_pop (av_async_pool);
3491 AV *av = newAV ();
3492 SV *cb = ST (0);
3493 int i;
3494
3495 av_extend (av, items - 2);
3496 for (i = 1; i < items; ++i)
3497 av_push (av, SvREFCNT_inc_NN (ST (i)));
3498
3499 if ((SV *)hv == &PL_sv_undef)
2047 { 3500 {
2048 SV *old = PL_diehook; 3501 PUSHMARK (SP);
2049 PL_diehook = 0; 3502 EXTEND (SP, 2);
2050 SvREFCNT_dec (old); 3503 PUSHs (sv_Coro);
2051 croak ("\3async_pool terminate\2\n"); 3504 PUSHs ((SV *)cv_pool_handler);
3505 PUTBACK;
3506 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3507 SPAGAIN;
3508
3509 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2052 } 3510 }
2053 3511
2054 SvREFCNT_dec (coro->saved_deffh);
2055 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2056
2057 hv_store (hv, "desc", sizeof ("desc") - 1,
2058 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2059
2060 invoke_av = (AV *)SvRV (invoke);
2061 len = av_len (invoke_av);
2062
2063 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2064
2065 if (len > 0)
2066 { 3512 {
2067 av_fill (defav, len - 1); 3513 struct coro *coro = SvSTATE_hv (hv);
2068 for (i = 0; i < len; ++i) 3514
2069 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3515 assert (!coro->invoke_cb);
3516 assert (!coro->invoke_av);
3517 coro->invoke_cb = SvREFCNT_inc (cb);
3518 coro->invoke_av = av;
2070 } 3519 }
2071 3520
3521 api_ready (aTHX_ (SV *)hv);
3522
3523 if (GIMME_V != G_VOID)
3524 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3525 else
2072 SvREFCNT_dec (invoke); 3526 SvREFCNT_dec (hv);
2073} 3527}
2074 3528
2075void 3529SV *
2076_pool_2 (SV *cb) 3530rouse_cb ()
3531 PROTOTYPE:
2077 CODE: 3532 CODE:
2078{ 3533 RETVAL = coro_new_rouse_cb (aTHX);
2079 struct coro *coro = SvSTATE (coro_current);
2080
2081 sv_setsv (cb, &PL_sv_undef);
2082
2083 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2084 coro->saved_deffh = 0;
2085
2086 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2087 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2088 {
2089 SV *old = PL_diehook;
2090 PL_diehook = 0;
2091 SvREFCNT_dec (old);
2092 croak ("\3async_pool terminate\2\n");
2093 }
2094
2095 av_clear (GvAV (PL_defgv));
2096 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2097 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2098
2099 coro->prio = 0;
2100
2101 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2102 api_trace (coro_current, 0);
2103
2104 av_push (av_async_pool, newSVsv (coro_current));
2105}
2106
2107#if 0
2108
2109void
2110_generator_call (...)
2111 PROTOTYPE: @
2112 PPCODE:
2113 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2114 xxxx
2115 abort ();
2116
2117SV *
2118gensub (SV *sub, ...)
2119 PROTOTYPE: &;@
2120 CODE:
2121{
2122 struct coro *coro;
2123 MAGIC *mg;
2124 CV *xcv;
2125 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2126 int i;
2127
2128 CvGV (ncv) = CvGV (cv);
2129 CvFILE (ncv) = CvFILE (cv);
2130
2131 Newz (0, coro, 1, struct coro);
2132 coro->args = newAV ();
2133 coro->flags = CF_NEW;
2134
2135 av_extend (coro->args, items - 1);
2136 for (i = 1; i < items; i++)
2137 av_push (coro->args, newSVsv (ST (i)));
2138
2139 CvISXSUB_on (ncv);
2140 CvXSUBANY (ncv).any_ptr = (void *)coro;
2141
2142 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2143
2144 CvXSUB (ncv) = CvXSUB (xcv);
2145 CvANON_on (ncv);
2146
2147 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2148 RETVAL = newRV_noinc ((SV *)ncv);
2149}
2150 OUTPUT: 3534 OUTPUT:
2151 RETVAL 3535 RETVAL
2152 3536
2153#endif 3537void
3538rouse_wait (...)
3539 PROTOTYPE: ;$
3540 PPCODE:
3541 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2154 3542
3543void
3544on_enter (SV *block)
3545 ALIAS:
3546 on_leave = 1
3547 PROTOTYPE: &
3548 CODE:
3549{
3550 struct coro *coro = SvSTATE_current;
3551 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2155 3552
3553 block = s_get_cv_croak (block);
3554
3555 if (!*avp)
3556 *avp = newAV ();
3557
3558 av_push (*avp, SvREFCNT_inc (block));
3559
3560 if (!ix)
3561 on_enterleave_call (aTHX_ block);
3562
3563 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3564 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3565 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3566}
3567
3568
3569MODULE = Coro::State PACKAGE = PerlIO::cede
3570
3571BOOT:
3572 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3573
3574
2156MODULE = Coro::State PACKAGE = Coro::AIO 3575MODULE = Coro::State PACKAGE = Coro::Semaphore
2157 3576
2158SV * 3577SV *
2159_get_state () 3578new (SV *klass, SV *count = 0)
2160 CODE: 3579 CODE:
2161{ 3580{
2162 struct io_state *data; 3581 int semcnt = 1;
2163 3582
2164 RETVAL = newSV (sizeof (struct io_state)); 3583 if (count)
2165 data = (struct io_state *)SvPVX (RETVAL); 3584 {
2166 SvCUR_set (RETVAL, sizeof (struct io_state)); 3585 SvGETMAGIC (count);
2167 SvPOK_only (RETVAL);
2168 3586
2169 data->errorno = errno; 3587 if (SvOK (count))
2170 data->laststype = PL_laststype; 3588 semcnt = SvIV (count);
2171 data->laststatval = PL_laststatval; 3589 }
2172 data->statcache = PL_statcache; 3590
3591 RETVAL = sv_bless (
3592 coro_waitarray_new (aTHX_ semcnt),
3593 GvSTASH (CvGV (cv))
3594 );
2173} 3595}
2174 OUTPUT: 3596 OUTPUT:
2175 RETVAL 3597 RETVAL
2176 3598
3599# helper for Coro::Channel and others
3600SV *
3601_alloc (int count)
3602 CODE:
3603 RETVAL = coro_waitarray_new (aTHX_ count);
3604 OUTPUT:
3605 RETVAL
3606
3607SV *
3608count (SV *self)
3609 CODE:
3610 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3611 OUTPUT:
3612 RETVAL
3613
2177void 3614void
2178_set_state (char *data_) 3615up (SV *self, int adjust = 1)
2179 PROTOTYPE: $ 3616 ALIAS:
3617 adjust = 1
3618 CODE:
3619 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3620
3621void
3622down (...)
3623 CODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3625
3626void
3627wait (...)
3628 CODE:
3629 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3630
3631void
3632try (SV *self)
3633 PPCODE:
3634{
3635 AV *av = (AV *)SvRV (self);
3636 SV *count_sv = AvARRAY (av)[0];
3637 IV count = SvIVX (count_sv);
3638
3639 if (count > 0)
3640 {
3641 --count;
3642 SvIVX (count_sv) = count;
3643 XSRETURN_YES;
3644 }
3645 else
3646 XSRETURN_NO;
3647}
3648
3649void
3650waiters (SV *self)
3651 PPCODE:
3652{
3653 AV *av = (AV *)SvRV (self);
3654 int wcount = AvFILLp (av) + 1 - 1;
3655
3656 if (GIMME_V == G_SCALAR)
3657 XPUSHs (sv_2mortal (newSViv (wcount)));
3658 else
3659 {
3660 int i;
3661 EXTEND (SP, wcount);
3662 for (i = 1; i <= wcount; ++i)
3663 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3664 }
3665}
3666
3667MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3668
3669void
3670_may_delete (SV *sem, int count, int extra_refs)
3671 PPCODE:
3672{
3673 AV *av = (AV *)SvRV (sem);
3674
3675 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3676 && AvFILLp (av) == 0 /* no waiters, just count */
3677 && SvIV (AvARRAY (av)[0]) == count)
3678 XSRETURN_YES;
3679
3680 XSRETURN_NO;
3681}
3682
3683MODULE = Coro::State PACKAGE = Coro::Signal
3684
3685SV *
3686new (SV *klass)
2180 CODE: 3687 CODE:
2181{ 3688 RETVAL = sv_bless (
2182 struct io_state *data = (void *)data_; 3689 coro_waitarray_new (aTHX_ 0),
3690 GvSTASH (CvGV (cv))
3691 );
3692 OUTPUT:
3693 RETVAL
2183 3694
2184 errno = data->errorno; 3695void
2185 PL_laststype = data->laststype; 3696wait (...)
2186 PL_laststatval = data->laststatval; 3697 CODE:
2187 PL_statcache = data->statcache; 3698 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3699
3700void
3701broadcast (SV *self)
3702 CODE:
3703{
3704 AV *av = (AV *)SvRV (self);
3705 coro_signal_wake (aTHX_ av, AvFILLp (av));
2188} 3706}
3707
3708void
3709send (SV *self)
3710 CODE:
3711{
3712 AV *av = (AV *)SvRV (self);
3713
3714 if (AvFILLp (av))
3715 coro_signal_wake (aTHX_ av, 1);
3716 else
3717 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3718}
3719
3720IV
3721awaited (SV *self)
3722 CODE:
3723 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3724 OUTPUT:
3725 RETVAL
2189 3726
2190 3727
2191MODULE = Coro::State PACKAGE = Coro::AnyEvent 3728MODULE = Coro::State PACKAGE = Coro::AnyEvent
2192 3729
2193BOOT: 3730BOOT:
2194 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3731 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2195 3732
2196SV * 3733void
2197_schedule (...) 3734_schedule (...)
2198 PROTOTYPE: @
2199 CODE: 3735 CODE:
2200{ 3736{
2201 static int incede; 3737 static int incede;
2202 3738
2203 api_cede_notself (); 3739 api_cede_notself (aTHX);
2204 3740
2205 ++incede; 3741 ++incede;
2206 while (coro_nready >= incede && api_cede ()) 3742 while (coro_nready >= incede && api_cede (aTHX))
2207 ; 3743 ;
2208 3744
2209 sv_setsv (sv_activity, &PL_sv_undef); 3745 sv_setsv (sv_activity, &PL_sv_undef);
2210 if (coro_nready >= incede) 3746 if (coro_nready >= incede)
2211 { 3747 {
2212 PUSHMARK (SP); 3748 PUSHMARK (SP);
2213 PUTBACK; 3749 PUTBACK;
2214 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3750 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2215 SPAGAIN;
2216 } 3751 }
2217 3752
2218 --incede; 3753 --incede;
2219} 3754}
2220 3755
3756
3757MODULE = Coro::State PACKAGE = Coro::AIO
3758
3759void
3760_register (char *target, char *proto, SV *req)
3761 CODE:
3762{
3763 SV *req_cv = s_get_cv_croak (req);
3764 /* newXSproto doesn't return the CV on 5.8 */
3765 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3766 sv_setpv ((SV *)slf_cv, proto);
3767 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3768}
3769
3770MODULE = Coro::State PACKAGE = Coro::Select
3771
3772void
3773patch_pp_sselect ()
3774 CODE:
3775 if (!coro_old_pp_sselect)
3776 {
3777 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3778 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3779 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3780 }
3781
3782void
3783unpatch_pp_sselect ()
3784 CODE:
3785 if (coro_old_pp_sselect)
3786 {
3787 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3788 coro_old_pp_sselect = 0;
3789 }
3790
3791

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines