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Comparing Coro/Coro/State.xs (file contents):
Revision 1.229 by root, Thu Apr 10 07:45:33 2008 UTC vs.
Revision 1.364 by root, Thu Jul 16 02:19:17 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>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49
50#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \
54 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
55
56#if !PERL_VERSION_ATLEAST (5,6,0)
57# ifndef PL_ppaddr
58# define PL_ppaddr ppaddr
59# endif
60# ifndef call_sv
61# define call_sv perl_call_sv
62# endif
63# ifndef get_sv
64# define get_sv perl_get_sv
65# endif
66# ifndef get_cv
67# define get_cv perl_get_cv
68# endif
69# ifndef IS_PADGV
70# define IS_PADGV(v) 0
71# endif
72# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0
74# endif
75#endif
76
77/* 5.8.8 */
78#ifndef GV_NOTQUAL
79# define GV_NOTQUAL 0
80#endif
81#ifndef newSV
82# define newSV(l) NEWSV(0,l)
83#endif
84
85/* 5.11 */
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif
89
90/* 5.8.7 */
91#ifndef SvRV_set
92# define SvRV_set(s,v) SvRV(s) = (v)
93#endif
94 55
95#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
96# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
97#endif 58#endif
98 59
… …
105# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
106#endif 67#endif
107 68
108/* 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
109 * 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
110#define dSTACKLEVEL volatile char stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
111#define STACKLEVEL ((void *)&stacklevel) 76# define STACKLEVEL ((void *)&stacklevel)
77#endif
112 78
113#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
114 80
115#if __GNUC__ >= 3 81#if __GNUC__ >= 3
116# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
117# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
119#else 85#else
120# define attribute(x) 86# define attribute(x)
121# define BARRIER
122# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
88# define INLINE static
123#endif 89#endif
124 90
125#define expect_false(expr) expect ((expr) != 0, 0) 91#define expect_false(expr) expect ((expr) != 0, 0)
126#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
127 93
128#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
129 95
130#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
131 98
132#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
133static perl_mutex coro_mutex; 100# if CORO_PTHREAD
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 101static void *coro_thx;
135# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 102# endif
136#else
137# define LOCK (void)0
138# define UNLOCK (void)0
139#endif 103#endif
140 104
141/* helper storage struct for Coro::AIO */ 105#ifdef __linux
142struct io_state 106# include <time.h> /* for timespec */
143{ 107# include <syscall.h> /* for SYS_* */
144 int errorno; 108# ifdef SYS_clock_gettime
145 I32 laststype; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
146 int laststatval; 110# define CORO_CLOCK_MONOTONIC 1
147 Stat_t statcache; 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
148}; 112# endif
113#endif
149 114
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;
150static size_t coro_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 126static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
155static 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 */
156 133
157static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 136static SV *rv_diehook;
160static SV *rv_warnhook; 137static SV *rv_warnhook;
161static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
162 139
163/* async_pool helper stuff */ 140/* async_pool helper stuff */
164static SV *sv_pool_rss; 141static SV *sv_pool_rss;
165static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
166static 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;
148
149/* Coro::AnyEvent */
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;
167 157
168static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
170 160
171enum { 161enum {
… …
176 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178}; 168};
179 169
180/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
181typedef struct coro_cctx { 171typedef struct coro_cctx
172{
182 struct coro_cctx *next; 173 struct coro_cctx *next;
183 174
184 /* the stack */ 175 /* the stack */
185 void *sptr; 176 void *sptr;
186 size_t ssize; 177 size_t ssize;
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
190 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 */
191 JMPENV *top_env; 182 JMPENV *top_env;
192 coro_context cctx; 183 coro_context cctx;
193 184
185 U32 gen;
194#if CORO_USE_VALGRIND 186#if CORO_USE_VALGRIND
195 int valgrind_id; 187 int valgrind_id;
196#endif 188#endif
197 unsigned char flags; 189 unsigned char flags;
198} coro_cctx; 190} coro_cctx;
199 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
200enum { 196enum {
201 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
202 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
203 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
204 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 */
205}; 202};
206 203
207/* 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 */
208typedef struct { 205typedef struct
206{
209 SV *defsv; 207 SV *defsv;
210 AV *defav; 208 AV *defav;
211 SV *errsv; 209 SV *errsv;
212 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
213#define VAR(name,type) type name; 212#define VAR(name,type) type name;
214# include "state.h" 213# include "state.h"
215#undef VAR 214#undef VAR
216} perl_slots; 215} perl_slots;
217 216
218#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))
219 218
220/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
221struct coro { 220struct coro {
222 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
223 coro_cctx *cctx; 222 coro_cctx *cctx;
224 223
225 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
226 AV *mainstack; 229 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
228 231
232 CV *startcv; /* the CV to execute */
229 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
230 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
231 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
232 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);
233 238
234 /* statistics */ 239 /* statistics */
235 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
236 241
237 /* coro process data */ 242 /* coro process data */
238 int prio; 243 int prio;
239 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
240 246
241 /* async_pool */ 247 /* async_pool */
242 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;
243 258
244 /* linked list */ 259 /* linked list */
245 struct coro *next, *prev; 260 struct coro *next, *prev;
246}; 261};
247 262
248typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
249typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
250 265
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
251/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
252 272
253#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
254#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
255#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
256#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
257#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
258#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
259 279
260/* for Coro.pm */ 280/* for Coro.pm */
261static SV *coro_current; 281static SV *coro_current;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 282static SV *coro_readyhook;
263static int coro_nready; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static CV *cv_coro_run, *cv_coro_terminate;
264static 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}
265 307
266/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
267 309
268static SV * 310static SV *
269coro_get_sv (pTHX_ const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
… …
293 get_hv (name, create); 335 get_hv (name, create);
294#endif 336#endif
295 return get_hv (name, create); 337 return get_hv (name, create);
296} 338}
297 339
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
298static AV * 439static AV *
299coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
300{ 441{
301 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
303 444
304 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 451#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 453 --AvFILLp (padlist);
313 454
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
315 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
316 457
317 return newpadlist; 458 return newpadlist;
318} 459}
319 460
320static void 461static void
321free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
322{ 463{
323 /* may be during global destruction */ 464 /* may be during global destruction */
324 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
325 { 466 {
326 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
327 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
328 { 470 {
329 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
330 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
331 { 473 I32 j = AvFILLp (av);
332 SV *sv; 474
333 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
334 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
335
336 SvREFCNT_dec (*svp);
337 }
338 } 480 }
339 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
340 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
341 } 486 }
342} 487}
343 488
344static int 489static int
345coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
346{ 491{
347 AV *padlist; 492 AV *padlist;
348 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;
349 498
350 /* casting is fun. */ 499 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
353 502
503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
504
354 return 0; 505 return 0;
355} 506}
356
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 507
360static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 509 0, 0, 0, 0,
362 coro_cv_free 510 coro_cv_free
363}; 511};
364
365#define CORO_MAGIC(sv,type) \
366 SvMAGIC (sv) \
367 ? SvMAGIC (sv)->mg_type == type \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \
370 : 0
371
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374
375static struct coro *
376SvSTATE_ (pTHX_ SV *coro)
377{
378 HV *stash;
379 MAGIC *mg;
380
381 if (SvROK (coro))
382 coro = SvRV (coro);
383
384 if (expect_false (SvTYPE (coro) != SVt_PVHV))
385 croak ("Coro::State object required");
386
387 stash = SvSTASH (coro);
388 if (expect_false (stash != coro_stash && stash != coro_state_stash))
389 {
390 /* very slow, but rare, check */
391 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
392 croak ("Coro::State object required");
393 }
394
395 mg = CORO_MAGIC_state (coro);
396 return (struct coro *)mg->mg_ptr;
397}
398
399#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
400 512
401/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
402static void 514static void
403get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
404{ 516{
… …
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 520 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 521 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 522 else
411 { 523 {
412#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 525 /* this is probably cleaner? but also slower! */
526 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
418#else 531#else
419 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
420#endif 533#endif
421 } 534 }
422} 535}
423 536
424static void 537static void
… …
431 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);
432 545
433 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
434 547
435 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
436 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
437 550
438 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
439} 552}
440 553
441/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
442 558
443static void 559static void
444load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
445{ 561{
446 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
447 c->slot = 0; 563 c->slot = 0;
448 564
449 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
450 566
451 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
452 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
453 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
454 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
455 572
456 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
457 # include "state.h" 574 # include "state.h"
458 #undef VAR 575 #undef VAR
459 576
… …
470 CvPADLIST (cv) = (AV *)POPs; 587 CvPADLIST (cv) = (AV *)POPs;
471 } 588 }
472 589
473 PUTBACK; 590 PUTBACK;
474 } 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 }
475} 611}
476 612
477static void 613static void
478save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
479{ 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
480 { 635 {
481 dSP; 636 dSP;
482 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 638 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 639 PERL_SI *top_si = PL_curstackinfo;
… …
494 { 649 {
495 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
496 { 651 {
497 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
498 653
499 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))
500 { 655 {
501 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
502 657
503 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
504 { 659 {
505 EXTEND (SP, 3); 660 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 661 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 662 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 663 PUSHs ((SV *)cv);
509 664
510 CvDEPTH (cv) = 0; 665 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 666 get_padlist (aTHX_ cv);
512 } 667 }
… …
528 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
529 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
530 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
531 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
532 { 687 {
533 int i; 688 unsigned int i;
534 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
535 CXINC; 690 CXINC;
536 } 691 }
537 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
538 693
539 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
540 695
541 { 696 {
542 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
543 698
544 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
545 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
546 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
547 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
548 704
549 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
550 # include "state.h" 706 # include "state.h"
551 #undef VAR 707 #undef VAR
552 } 708 }
553} 709}
554 710
555/* 711/*
556 * allocate various perl stacks. This is an exact copy 712 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
560 */ 716 */
561#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
562# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
563#else 719#else
564static void 720static void
565coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
566{ 722{
567 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
604 760
605/* 761/*
606 * destroy the stacks, the callchain etc... 762 * destroy the stacks, the callchain etc...
607 */ 763 */
608static void 764static void
609coro_destroy_stacks (pTHX) 765coro_destruct_stacks (pTHX)
610{ 766{
611 while (PL_curstackinfo->si_next) 767 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 768 PL_curstackinfo = PL_curstackinfo->si_next;
613 769
614 while (PL_curstackinfo) 770 while (PL_curstackinfo)
… …
630#if !PERL_VERSION_ATLEAST (5,10,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 787 Safefree (PL_retstack);
632#endif 788#endif
633} 789}
634 790
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
635static size_t 800static size_t
636coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
637{ 802{
638 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
639 804
640 if (coro->mainstack) 805 if (coro->mainstack)
641 { 806 {
642 perl_slots tmp_slot;
643 perl_slots *slot;
644
645 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
646 { 808 {
647 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
648 810 CORO_RSS;
649 #define VAR(name,type) slot->name = PL_ ## name;
650 # include "state.h"
651 #undef VAR 811 #undef SYM
652 } 812 }
653 else 813 else
654 slot = coro->slot; 814 {
655 815 #define SYM(sym) coro->slot->sym
656 rss += sizeof (slot->curstackinfo); 816 CORO_RSS;
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 817 #undef SYM
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 818 }
659 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY);
663
664#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *);
666#endif
667 } 819 }
668 820
669 return rss; 821 return rss;
670} 822}
671 823
672/** coroutine stack handling ************************************************/ 824/** coroutine stack handling ************************************************/
673 825
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 826static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 827static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
828static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
829
830/* apparently < 5.8.8 */
831#ifndef MgPV_nolen_const
832#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
833 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
834 (const char*)(mg)->mg_ptr)
835#endif
676 836
677/* 837/*
678 * This overrides the default magic get method of %SIG elements. 838 * This overrides the default magic get method of %SIG elements.
679 * 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
680 * 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
681 * readback here. 841 * readback here.
682 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
683 * not expecting this to actually change the hook. This is a potential problem
684 * when a schedule happens then, but we ignore this.
685 */ 842 */
686static int 843static int
687coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
688{ 845{
689 const char *s = MgPV_nolen_const (mg); 846 const char *s = MgPV_nolen_const (mg);
690 847
691 if (*s == '_') 848 if (*s == '_')
692 { 849 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 850 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 851
852 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
853 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
854
855 if (svp)
856 {
857 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
858 return 0;
859 }
695 } 860 }
696 861
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 862 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
698} 863}
699 864
700static int 865static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 866coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
702{ 867{
703 const char *s = MgPV_nolen_const (mg); 868 const char *s = MgPV_nolen_const (mg);
704 869
705 if (*s == '_') 870 if (*s == '_')
706 { 871 {
… …
710 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 875 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
711 876
712 if (svp) 877 if (svp)
713 { 878 {
714 SV *old = *svp; 879 SV *old = *svp;
715 *svp = newSVsv (sv); 880 *svp = 0;
716 SvREFCNT_dec (old); 881 SvREFCNT_dec (old);
717 return; 882 return 0;
718 } 883 }
719 } 884 }
720 885
886 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
887}
888
889static int
890coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
891{
892 const char *s = MgPV_nolen_const (mg);
893
894 if (*s == '_')
895 {
896 SV **svp = 0;
897
898 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
900
901 if (svp)
902 {
903 SV *old = *svp;
904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
905 SvREFCNT_dec (old);
906 return 0;
907 }
908 }
909
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722} 911}
723 912
724static 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 */
725coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
726{ 936{
727 /* 937 /*
728 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
729 */ 939 */
… …
731 941
732 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
733 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
734 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
735 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
736 PL_curpm = 0; 949 PL_curpm = 0;
737 PL_curpad = 0; 950 PL_curpad = 0;
738 PL_localizing = 0; 951 PL_localizing = 0;
739 PL_dirty = 0; 952 PL_dirty = 0;
740 PL_restartop = 0; 953 PL_restartop = 0;
741#if PERL_VERSION_ATLEAST (5,10,0) 954#if PERL_VERSION_ATLEAST (5,10,0)
742 PL_parser = 0; 955 PL_parser = 0;
743#endif 956#endif
957 PL_hints = 0;
744 958
745 /* recreate the die/warn hooks */ 959 /* recreate the die/warn hooks */
746 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 );
747 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);
748 962
749 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
750 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
751 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
752 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;
753 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
754 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
755 970
756 { 971 {
757 dSP; 972 dSP;
758 LOGOP myop; 973 UNOP myop;
759 974
760 Zero (&myop, 1, LOGOP); 975 Zero (&myop, 1, UNOP);
761 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
762 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
763 979
764 PUSHMARK (SP); 980 PUSHMARK (SP);
765 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
766 PUTBACK; 982 PUTBACK;
767 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
768 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
769 SPAGAIN;
770 } 985 }
771 986
772 /* 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
773 * 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.
774 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
775 * so we ENTER here for symmetry
776 */ 989 */
777 ENTER; 990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
778} 991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
779 992
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
780static void 1011static void
781coro_destroy (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
782{ 1013{
783 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
784 { 1015 {
785 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
786 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
794 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
795 1026
796 /* unwind main stack */ 1027 /* unwind main stack */
797 dounwind (-1); 1028 dounwind (-1);
798 } 1029 }
1030}
799 1031
800 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
801 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
802 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
803 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
804 SvREFCNT_dec (PL_rs);
805 SvREFCNT_dec (GvSV (irsgv));
806 1036
807 SvREFCNT_dec (PL_diehook);
808 SvREFCNT_dec (PL_warnhook);
809 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
810 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
811 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
812 1071 SvREFCNT_dec (coro->invoke_cb);
813 coro_destroy_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
814} 1074}
815 1075
816static void 1076INLINE void
817free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
818{ 1078{
819 if (expect_true (coro_mortal)) 1079 if (expect_true (coro_mortal))
820 { 1080 {
821 SvREFCNT_dec (coro_mortal); 1081 SvREFCNT_dec (coro_mortal);
… …
826static int 1086static int
827runops_trace (pTHX) 1087runops_trace (pTHX)
828{ 1088{
829 COP *oldcop = 0; 1089 COP *oldcop = 0;
830 int oldcxix = -2; 1090 int oldcxix = -2;
831 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
832 coro_cctx *cctx = coro->cctx;
833 1091
834 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
835 { 1093 {
836 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
837 1095
838 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
839 { 1097 {
840 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)
841 { 1099 {
842 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
843 SV **bot, **top; 1101 SV **bot, **top;
844 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
845 SV **cb; 1103 SV **cb;
… …
855 : cx->blk_gimme == G_SCALAR ? bot + 1 1113 : cx->blk_gimme == G_SCALAR ? bot + 1
856 : bot; 1114 : bot;
857 1115
858 av_extend (av, top - bot); 1116 av_extend (av, top - bot);
859 while (bot < top) 1117 while (bot < top)
860 av_push (av, SvREFCNT_inc (*bot++)); 1118 av_push (av, SvREFCNT_inc_NN (*bot++));
861 1119
862 PL_runops = RUNOPS_DEFAULT; 1120 PL_runops = RUNOPS_DEFAULT;
863 ENTER; 1121 ENTER;
864 SAVETMPS; 1122 SAVETMPS;
865 EXTEND (SP, 3); 1123 EXTEND (SP, 3);
… …
882 1140
883 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
884 { 1142 {
885 SV **cb; 1143 SV **cb;
886 1144
887 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
888 { 1146 {
889 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
890 1148
891 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
892 { 1150 {
893 runops_proc_t old_runops = PL_runops;
894 dSP; 1151 dSP;
895 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
896 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
897 1154
898 if (isGV (gv)) 1155 if (isGV (gv))
… …
903 SAVETMPS; 1160 SAVETMPS;
904 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
905 PUSHMARK (SP); 1162 PUSHMARK (SP);
906 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
907 PUSHs (fullname); 1164 PUSHs (fullname);
908 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);
909 PUTBACK; 1166 PUTBACK;
910 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);
911 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);
912 SPAGAIN; 1169 SPAGAIN;
913 FREETMPS; 1170 FREETMPS;
… …
916 } 1173 }
917 1174
918 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
919 } 1176 }
920 1177
921 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
922 { 1179 {
923 dSP; 1180 dSP;
924 1181
925 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
926 ENTER; 1183 ENTER;
… …
945 1202
946 TAINT_NOT; 1203 TAINT_NOT;
947 return 0; 1204 return 0;
948} 1205}
949 1206
950/* inject a fake call to Coro::State::_cctx_init into the execution */ 1207static struct CoroSLF cctx_ssl_frame;
951/* _cctx_init should be careful, as it could be called at almost any time */ 1208
952/* 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 */
953static void NOINLINE 1224static void NOINLINE
954cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
955{ 1226{
956 dSP;
957 LOGOP myop;
958
959 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
960 1228
961 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
962 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
963 1231
964 Zero (&myop, 1, LOGOP); 1232 /* we already must be executing an SLF op, there is no other valid way
965 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
966 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));
967 1236
968 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
969 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
970 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1239
971 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
972 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
973 PL_op = (OP *)&myop; 1242}
974 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1243
975 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);
976} 1249}
977 1250
978/* 1251/*
979 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
980 */ 1253 */
981static void 1254static void
982cctx_run (void *arg) 1255cctx_run (void *arg)
983{ 1256{
1257#ifdef USE_ITHREADS
1258# if CORO_PTHREAD
1259 PERL_SET_CONTEXT (coro_thx);
1260# endif
1261#endif
1262 {
984 dTHX; 1263 dTHX;
985 1264
986 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1265 /* normally we would need to skip the entersub here */
987 UNLOCK; 1266 /* not doing so will re-execute it, which is exactly what we want */
988
989 /* we now skip the entersub that lead to transfer() */
990 PL_op = PL_op->op_next; 1267 /* PL_nop = PL_nop->op_next */
991 1268
992 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
993 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
994 1271
1272 /* cctx_run is the alternative tail of transfer() */
1273 transfer_tail (aTHX);
1274
995 /* 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 */
996 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
997 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
998
999 /* 1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these
1281 */
1282
1283 /*
1000 * If perl-run returns we assume exit() was being called or the coro 1284 * If perl-run returns we assume exit() was being called or the coro
1001 * fell off the end, which seems to be the only valid (non-bug) 1285 * fell off the end, which seems to be the only valid (non-bug)
1002 * reason for perl_run to return. We try to exit by jumping to the 1286 * reason for perl_run to return. We try to exit by jumping to the
1003 * bootstrap-time "top" top_env, as we cannot restore the "main" 1287 * bootstrap-time "top" top_env, as we cannot restore the "main"
1004 * coroutine as Coro has no such concept 1288 * coroutine as Coro has no such concept.
1289 * This actually isn't valid with the pthread backend, but OSes requiring
1290 * that backend are too broken to do it in a standards-compliant way.
1005 */ 1291 */
1006 PL_top_env = main_top_env; 1292 PL_top_env = main_top_env;
1007 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1293 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1294 }
1008} 1295}
1009 1296
1010static coro_cctx * 1297static coro_cctx *
1011cctx_new () 1298cctx_new ()
1012{ 1299{
1013 coro_cctx *cctx; 1300 coro_cctx *cctx;
1301
1302 ++cctx_count;
1303 New (0, cctx, 1, coro_cctx);
1304
1305 cctx->gen = cctx_gen;
1306 cctx->flags = 0;
1307 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1308
1309 return cctx;
1310}
1311
1312/* create a new cctx only suitable as source */
1313static coro_cctx *
1314cctx_new_empty ()
1315{
1316 coro_cctx *cctx = cctx_new ();
1317
1318 cctx->sptr = 0;
1319 coro_create (&cctx->cctx, 0, 0, 0, 0);
1320
1321 return cctx;
1322}
1323
1324/* create a new cctx suitable as destination/running a perl interpreter */
1325static coro_cctx *
1326cctx_new_run ()
1327{
1328 coro_cctx *cctx = cctx_new ();
1014 void *stack_start; 1329 void *stack_start;
1015 size_t stack_size; 1330 size_t stack_size;
1016 1331
1017 ++cctx_count;
1018
1019 Newz (0, cctx, 1, coro_cctx);
1020
1021#if HAVE_MMAP 1332#if HAVE_MMAP
1022 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1333 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1023 /* mmap supposedly does allocate-on-write for us */ 1334 /* mmap supposedly does allocate-on-write for us */
1024 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1335 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1025 1336
1026 if (cctx->sptr != (void *)-1) 1337 if (cctx->sptr != (void *)-1)
1027 { 1338 {
1028# if CORO_STACKGUARD 1339 #if CORO_STACKGUARD
1029 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1340 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1030# endif 1341 #endif
1031 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1342 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1032 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1343 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1033 cctx->flags |= CC_MAPPED; 1344 cctx->flags |= CC_MAPPED;
1034 } 1345 }
1035 else 1346 else
1036#endif 1347#endif
1037 { 1348 {
1038 cctx->ssize = coro_stacksize * (long)sizeof (long); 1349 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1039 New (0, cctx->sptr, coro_stacksize, long); 1350 New (0, cctx->sptr, cctx_stacksize, long);
1040 1351
1041 if (!cctx->sptr) 1352 if (!cctx->sptr)
1042 { 1353 {
1043 perror ("FATAL: unable to allocate stack for coroutine"); 1354 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1044 _exit (EXIT_FAILURE); 1355 _exit (EXIT_FAILURE);
1045 } 1356 }
1046 1357
1047 stack_start = cctx->sptr; 1358 stack_start = cctx->sptr;
1048 stack_size = cctx->ssize; 1359 stack_size = cctx->ssize;
1049 } 1360 }
1050 1361
1051 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1362 #if CORO_USE_VALGRIND
1363 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1364 #endif
1365
1052 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1366 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1053 1367
1054 return cctx; 1368 return cctx;
1055} 1369}
1056 1370
… …
1058cctx_destroy (coro_cctx *cctx) 1372cctx_destroy (coro_cctx *cctx)
1059{ 1373{
1060 if (!cctx) 1374 if (!cctx)
1061 return; 1375 return;
1062 1376
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1378
1063 --cctx_count; 1379 --cctx_count;
1380 coro_destroy (&cctx->cctx);
1064 1381
1382 /* coro_transfer creates new, empty cctx's */
1383 if (cctx->sptr)
1384 {
1065#if CORO_USE_VALGRIND 1385 #if CORO_USE_VALGRIND
1066 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1386 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1387 #endif
1388
1389#if HAVE_MMAP
1390 if (cctx->flags & CC_MAPPED)
1391 munmap (cctx->sptr, cctx->ssize);
1392 else
1067#endif 1393#endif
1068
1069#if HAVE_MMAP
1070 if (cctx->flags & CC_MAPPED)
1071 munmap (cctx->sptr, cctx->ssize);
1072 else
1073#endif
1074 Safefree (cctx->sptr); 1394 Safefree (cctx->sptr);
1395 }
1075 1396
1076 Safefree (cctx); 1397 Safefree (cctx);
1077} 1398}
1078 1399
1079/* wether this cctx should be destructed */ 1400/* wether this cctx should be destructed */
1080#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1401#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1081 1402
1082static coro_cctx * 1403static coro_cctx *
1083cctx_get (pTHX) 1404cctx_get (pTHX)
1084{ 1405{
1085 while (expect_true (cctx_first)) 1406 while (expect_true (cctx_first))
… …
1092 return cctx; 1413 return cctx;
1093 1414
1094 cctx_destroy (cctx); 1415 cctx_destroy (cctx);
1095 } 1416 }
1096 1417
1097 return cctx_new (); 1418 return cctx_new_run ();
1098} 1419}
1099 1420
1100static void 1421static void
1101cctx_put (coro_cctx *cctx) 1422cctx_put (coro_cctx *cctx)
1102{ 1423{
1424 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1425
1103 /* free another cctx if overlimit */ 1426 /* free another cctx if overlimit */
1104 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1427 if (expect_false (cctx_idle >= cctx_max_idle))
1105 { 1428 {
1106 coro_cctx *first = cctx_first; 1429 coro_cctx *first = cctx_first;
1107 cctx_first = first->next; 1430 cctx_first = first->next;
1108 --cctx_idle; 1431 --cctx_idle;
1109 1432
… …
1118/** coroutine switching *****************************************************/ 1441/** coroutine switching *****************************************************/
1119 1442
1120static void 1443static void
1121transfer_check (pTHX_ struct coro *prev, struct coro *next) 1444transfer_check (pTHX_ struct coro *prev, struct coro *next)
1122{ 1445{
1446 /* TODO: throwing up here is considered harmful */
1447
1123 if (expect_true (prev != next)) 1448 if (expect_true (prev != next))
1124 { 1449 {
1125 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1450 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1126 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1451 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1127 1452
1128 if (expect_false (next->flags & CF_RUNNING))
1129 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1130
1131 if (expect_false (next->flags & CF_DESTROYED)) 1453 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1132 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1454 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1133 1455
1134#if !PERL_VERSION_ATLEAST (5,10,0) 1456#if !PERL_VERSION_ATLEAST (5,10,0)
1135 if (expect_false (PL_lex_state != LEX_NOTPARSING) 1457 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1458 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1137#endif 1459#endif
1138 } 1460 }
1139} 1461}
1140 1462
1141/* always use the TRANSFER macro */ 1463/* always use the TRANSFER macro */
1142static void NOINLINE 1464static void NOINLINE /* noinline so we have a fixed stackframe */
1143transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1144{ 1466{
1145 dSTACKLEVEL; 1467 dSTACKLEVEL;
1146 static volatile int has_throw;
1147 1468
1148 /* sometimes transfer is only called to set idle_sp */ 1469 /* sometimes transfer is only called to set idle_sp */
1149 if (expect_false (!next)) 1470 if (expect_false (!prev))
1150 { 1471 {
1151 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1472 cctx_current->idle_sp = STACKLEVEL;
1152 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1473 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1153 } 1474 }
1154 else if (expect_true (prev != next)) 1475 else if (expect_true (prev != next))
1155 { 1476 {
1156 coro_cctx *prev__cctx; 1477 coro_cctx *cctx_prev;
1157 1478
1158 if (expect_false (prev->flags & CF_NEW)) 1479 if (expect_false (prev->flags & CF_NEW))
1159 { 1480 {
1160 /* create a new empty context */ 1481 /* create a new empty/source context */
1161 Newz (0, prev->cctx, 1, coro_cctx);
1162 prev->flags &= ~CF_NEW; 1482 prev->flags &= ~CF_NEW;
1163 prev->flags |= CF_RUNNING; 1483 prev->flags |= CF_RUNNING;
1164 } 1484 }
1165 1485
1166 prev->flags &= ~CF_RUNNING; 1486 prev->flags &= ~CF_RUNNING;
1167 next->flags |= CF_RUNNING; 1487 next->flags |= CF_RUNNING;
1168
1169 LOCK;
1170 1488
1171 /* first get rid of the old state */ 1489 /* first get rid of the old state */
1172 save_perl (aTHX_ prev); 1490 save_perl (aTHX_ prev);
1173 1491
1174 if (expect_false (next->flags & CF_NEW)) 1492 if (expect_false (next->flags & CF_NEW))
… …
1179 coro_setup (aTHX_ next); 1497 coro_setup (aTHX_ next);
1180 } 1498 }
1181 else 1499 else
1182 load_perl (aTHX_ next); 1500 load_perl (aTHX_ next);
1183 1501
1184 prev__cctx = prev->cctx;
1185
1186 /* possibly "free" the cctx */ 1502 /* possibly untie and reuse the cctx */
1187 if (expect_true ( 1503 if (expect_true (
1188 prev__cctx->idle_sp == STACKLEVEL 1504 cctx_current->idle_sp == STACKLEVEL
1189 && !(prev__cctx->flags & CC_TRACE) 1505 && !(cctx_current->flags & CC_TRACE)
1190 && !force_cctx 1506 && !force_cctx
1191 )) 1507 ))
1192 { 1508 {
1193 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1509 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1194 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1510 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1195 1511
1196 prev->cctx = 0;
1197
1198 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1512 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1199 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1513 /* without this the next cctx_get might destroy the running cctx while still in use */
1200 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1514 if (expect_false (CCTX_EXPIRED (cctx_current)))
1201 if (!next->cctx) 1515 if (expect_true (!next->cctx))
1202 next->cctx = cctx_get (aTHX); 1516 next->cctx = cctx_get (aTHX);
1203 1517
1204 cctx_put (prev__cctx); 1518 cctx_put (cctx_current);
1205 } 1519 }
1520 else
1521 prev->cctx = cctx_current;
1206 1522
1207 ++next->usecount; 1523 ++next->usecount;
1208 1524
1209 if (expect_true (!next->cctx)) 1525 cctx_prev = cctx_current;
1210 next->cctx = cctx_get (aTHX); 1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1211 1527
1212 has_throw = !!next->throw; 1528 next->cctx = 0;
1213 1529
1214 if (expect_false (prev__cctx != next->cctx)) 1530 if (expect_false (cctx_prev != cctx_current))
1215 { 1531 {
1216 prev__cctx->top_env = PL_top_env; 1532 cctx_prev->top_env = PL_top_env;
1217 PL_top_env = next->cctx->top_env; 1533 PL_top_env = cctx_current->top_env;
1218 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1219 } 1535 }
1220 1536
1221 free_coro_mortal (aTHX); 1537 transfer_tail (aTHX);
1222 UNLOCK;
1223
1224 if (expect_false (has_throw))
1225 {
1226 struct coro *coro = SvSTATE (coro_current);
1227
1228 if (coro->throw)
1229 {
1230 SV *exception = coro->throw;
1231 coro->throw = 0;
1232 sv_setsv (ERRSV, exception);
1233 croak (0);
1234 }
1235 }
1236 } 1538 }
1237} 1539}
1238
1239struct transfer_args
1240{
1241 struct coro *prev, *next;
1242};
1243 1540
1244#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1541#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1245#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1542#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1246 1543
1247/** high level stuff ********************************************************/ 1544/** high level stuff ********************************************************/
… …
1249static int 1546static int
1250coro_state_destroy (pTHX_ struct coro *coro) 1547coro_state_destroy (pTHX_ struct coro *coro)
1251{ 1548{
1252 if (coro->flags & CF_DESTROYED) 1549 if (coro->flags & CF_DESTROYED)
1253 return 0; 1550 return 0;
1551
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro);
1254 1554
1255 coro->flags |= CF_DESTROYED; 1555 coro->flags |= CF_DESTROYED;
1256 1556
1257 if (coro->flags & CF_READY) 1557 if (coro->flags & CF_READY)
1258 { 1558 {
1259 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1559 /* reduce nready, as destroying a ready coro effectively unreadies it */
1260 /* alternative: look through all ready queues and remove the coro */ 1560 /* alternative: look through all ready queues and remove the coro */
1261 LOCK;
1262 --coro_nready; 1561 --coro_nready;
1263 UNLOCK;
1264 } 1562 }
1265 else 1563 else
1266 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1564 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1267 1565
1268 if (coro->mainstack && coro->mainstack != main_mainstack) 1566 if (coro->mainstack
1269 { 1567 && coro->mainstack != main_mainstack
1270 struct coro temp; 1568 && coro->slot
1271 1569 && !PL_dirty)
1272 if (coro->flags & CF_RUNNING)
1273 croak ("FATAL: tried to destroy currently running coroutine");
1274
1275 save_perl (aTHX_ &temp);
1276 load_perl (aTHX_ coro);
1277
1278 coro_destroy (aTHX_ coro); 1570 coro_destruct_perl (aTHX_ coro);
1279
1280 load_perl (aTHX_ &temp);
1281
1282 coro->slot = 0;
1283 }
1284 1571
1285 cctx_destroy (coro->cctx); 1572 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv);
1286 SvREFCNT_dec (coro->args); 1574 SvREFCNT_dec (coro->args);
1575 SvREFCNT_dec (CORO_THROW);
1287 1576
1288 if (coro->next) coro->next->prev = coro->prev; 1577 if (coro->next) coro->next->prev = coro->prev;
1289 if (coro->prev) coro->prev->next = coro->next; 1578 if (coro->prev) coro->prev->next = coro->next;
1290 if (coro == coro_first) coro_first = coro->next; 1579 if (coro == coro_first) coro_first = coro->next;
1291 1580
… …
1329# define MGf_DUP 0 1618# define MGf_DUP 0
1330#endif 1619#endif
1331}; 1620};
1332 1621
1333static void 1622static void
1334prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1623prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1335{ 1624{
1336 ta->prev = SvSTATE (prev_sv); 1625 ta->prev = SvSTATE (prev_sv);
1337 ta->next = SvSTATE (next_sv); 1626 ta->next = SvSTATE (next_sv);
1338 TRANSFER_CHECK (*ta); 1627 TRANSFER_CHECK (*ta);
1339} 1628}
1340 1629
1341static void 1630static void
1342api_transfer (SV *prev_sv, SV *next_sv) 1631api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1343{ 1632{
1344 dTHX;
1345 struct transfer_args ta; 1633 struct coro_transfer_args ta;
1346 1634
1347 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1635 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1348 TRANSFER (ta, 1); 1636 TRANSFER (ta, 1);
1349} 1637}
1350 1638
1351/** Coro ********************************************************************/ 1639/** Coro ********************************************************************/
1352 1640
1353static void 1641INLINE void
1354coro_enq (pTHX_ SV *coro_sv) 1642coro_enq (pTHX_ struct coro *coro)
1355{ 1643{
1356 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1357}
1358 1645
1359static SV * 1646 SvREFCNT_inc_NN (coro->hv);
1647
1648 coro->next_ready = 0;
1649 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1650 ready [1] = coro;
1651}
1652
1653INLINE struct coro *
1360coro_deq (pTHX) 1654coro_deq (pTHX)
1361{ 1655{
1362 int prio; 1656 int prio;
1363 1657
1364 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1365 if (AvFILLp (coro_ready [prio]) >= 0) 1659 {
1366 return av_shift (coro_ready [prio]); 1660 struct coro **ready = coro_ready [prio];
1661
1662 if (ready [0])
1663 {
1664 struct coro *coro = ready [0];
1665 ready [0] = coro->next_ready;
1666 return coro;
1667 }
1668 }
1367 1669
1368 return 0; 1670 return 0;
1369} 1671}
1370 1672
1371static int 1673static int
1372api_ready (SV *coro_sv) 1674api_ready (pTHX_ SV *coro_sv)
1373{ 1675{
1374 dTHX;
1375 struct coro *coro; 1676 struct coro *coro;
1376 1677 SV *sv_hook;
1377 if (SvROK (coro_sv)) 1678 void (*xs_hook)(void);
1378 coro_sv = SvRV (coro_sv);
1379 1679
1380 coro = SvSTATE (coro_sv); 1680 coro = SvSTATE (coro_sv);
1381 1681
1382 if (coro->flags & CF_READY) 1682 if (coro->flags & CF_READY)
1383 return 0; 1683 return 0;
1384 1684
1385 coro->flags |= CF_READY; 1685 coro->flags |= CF_READY;
1386 1686
1387 LOCK; 1687 sv_hook = coro_nready ? 0 : coro_readyhook;
1388 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1688 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1689
1690 coro_enq (aTHX_ coro);
1389 ++coro_nready; 1691 ++coro_nready;
1390 UNLOCK; 1692
1693 if (sv_hook)
1694 {
1695 dSP;
1696
1697 ENTER;
1698 SAVETMPS;
1699
1700 PUSHMARK (SP);
1701 PUTBACK;
1702 call_sv (sv_hook, G_VOID | G_DISCARD);
1703
1704 FREETMPS;
1705 LEAVE;
1706 }
1707
1708 if (xs_hook)
1709 xs_hook ();
1391 1710
1392 return 1; 1711 return 1;
1393} 1712}
1394 1713
1395static int 1714static int
1396api_is_ready (SV *coro_sv) 1715api_is_ready (pTHX_ SV *coro_sv)
1397{ 1716{
1398 dTHX;
1399 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1717 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1400} 1718}
1401 1719
1402static void 1720/* expects to own a reference to next->hv */
1721INLINE void
1403prepare_schedule (pTHX_ struct transfer_args *ta) 1722prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1404{ 1723{
1405 SV *prev_sv, *next_sv;
1406
1407 for (;;)
1408 {
1409 LOCK;
1410 next_sv = coro_deq (aTHX);
1411
1412 /* nothing to schedule: call the idle handler */
1413 if (expect_false (!next_sv))
1414 {
1415 dSP;
1416 UNLOCK;
1417
1418 ENTER;
1419 SAVETMPS;
1420
1421 PUSHMARK (SP);
1422 PUTBACK;
1423 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1424 SPAGAIN;
1425
1426 FREETMPS;
1427 LEAVE;
1428 continue;
1429 }
1430
1431 ta->next = SvSTATE (next_sv);
1432
1433 /* cannot transfer to destroyed coros, skip and look for next */
1434 if (expect_false (ta->next->flags & CF_DESTROYED))
1435 {
1436 UNLOCK;
1437 SvREFCNT_dec (next_sv);
1438 /* coro_nready is already taken care of by destroy */
1439 continue;
1440 }
1441
1442 --coro_nready;
1443 UNLOCK;
1444 break;
1445 }
1446
1447 /* free this only after the transfer */
1448 prev_sv = SvRV (coro_current); 1724 SV *prev_sv = SvRV (coro_current);
1725
1449 ta->prev = SvSTATE (prev_sv); 1726 ta->prev = SvSTATE_hv (prev_sv);
1727 ta->next = next;
1728
1450 TRANSFER_CHECK (*ta); 1729 TRANSFER_CHECK (*ta);
1451 assert (ta->next->flags & CF_READY); 1730
1452 ta->next->flags &= ~CF_READY;
1453 SvRV_set (coro_current, next_sv); 1731 SvRV_set (coro_current, (SV *)next->hv);
1454 1732
1455 LOCK;
1456 free_coro_mortal (aTHX); 1733 free_coro_mortal (aTHX);
1457 coro_mortal = prev_sv; 1734 coro_mortal = prev_sv;
1458 UNLOCK;
1459} 1735}
1460 1736
1461static void 1737static void
1738prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1739{
1740 for (;;)
1741 {
1742 struct coro *next = coro_deq (aTHX);
1743
1744 if (expect_true (next))
1745 {
1746 /* cannot transfer to destroyed coros, skip and look for next */
1747 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1748 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1749 else
1750 {
1751 next->flags &= ~CF_READY;
1752 --coro_nready;
1753
1754 prepare_schedule_to (aTHX_ ta, next);
1755 break;
1756 }
1757 }
1758 else
1759 {
1760 /* nothing to schedule: call the idle handler */
1761 if (SvROK (sv_idle)
1762 && SvOBJECT (SvRV (sv_idle)))
1763 {
1764 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1765 api_ready (aTHX_ SvRV (sv_idle));
1766 --coro_nready;
1767 }
1768 else
1769 {
1770 dSP;
1771
1772 ENTER;
1773 SAVETMPS;
1774
1775 PUSHMARK (SP);
1776 PUTBACK;
1777 call_sv (sv_idle, G_VOID | G_DISCARD);
1778
1779 FREETMPS;
1780 LEAVE;
1781 }
1782 }
1783 }
1784}
1785
1786INLINE void
1462prepare_cede (pTHX_ struct transfer_args *ta) 1787prepare_cede (pTHX_ struct coro_transfer_args *ta)
1463{ 1788{
1464 api_ready (coro_current); 1789 api_ready (aTHX_ coro_current);
1465 prepare_schedule (aTHX_ ta); 1790 prepare_schedule (aTHX_ ta);
1466} 1791}
1467 1792
1793INLINE void
1794prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1795{
1796 SV *prev = SvRV (coro_current);
1797
1798 if (coro_nready)
1799 {
1800 prepare_schedule (aTHX_ ta);
1801 api_ready (aTHX_ prev);
1802 }
1803 else
1804 prepare_nop (aTHX_ ta);
1805}
1806
1807static void
1808api_schedule (pTHX)
1809{
1810 struct coro_transfer_args ta;
1811
1812 prepare_schedule (aTHX_ &ta);
1813 TRANSFER (ta, 1);
1814}
1815
1816static void
1817api_schedule_to (pTHX_ SV *coro_sv)
1818{
1819 struct coro_transfer_args ta;
1820 struct coro *next = SvSTATE (coro_sv);
1821
1822 SvREFCNT_inc_NN (coro_sv);
1823 prepare_schedule_to (aTHX_ &ta, next);
1824}
1825
1468static int 1826static int
1469prepare_cede_notself (pTHX_ struct transfer_args *ta) 1827api_cede (pTHX)
1470{ 1828{
1471 if (coro_nready) 1829 struct coro_transfer_args ta;
1472 { 1830
1473 SV *prev = SvRV (coro_current);
1474 prepare_schedule (aTHX_ ta); 1831 prepare_cede (aTHX_ &ta);
1475 api_ready (prev); 1832
1833 if (expect_true (ta.prev != ta.next))
1834 {
1835 TRANSFER (ta, 1);
1476 return 1; 1836 return 1;
1477 } 1837 }
1478 else 1838 else
1479 return 0; 1839 return 0;
1480} 1840}
1481 1841
1482static void
1483api_schedule (void)
1484{
1485 dTHX;
1486 struct transfer_args ta;
1487
1488 prepare_schedule (aTHX_ &ta);
1489 TRANSFER (ta, 1);
1490}
1491
1492static int 1842static int
1493api_cede (void) 1843api_cede_notself (pTHX)
1494{ 1844{
1495 dTHX; 1845 if (coro_nready)
1846 {
1496 struct transfer_args ta; 1847 struct coro_transfer_args ta;
1497 1848
1498 prepare_cede (aTHX_ &ta); 1849 prepare_cede_notself (aTHX_ &ta);
1499
1500 if (expect_true (ta.prev != ta.next))
1501 {
1502 TRANSFER (ta, 1); 1850 TRANSFER (ta, 1);
1503 return 1; 1851 return 1;
1504 } 1852 }
1505 else 1853 else
1506 return 0; 1854 return 0;
1507} 1855}
1508 1856
1509static int 1857static void
1510api_cede_notself (void)
1511{
1512 dTHX;
1513 struct transfer_args ta;
1514
1515 if (prepare_cede_notself (aTHX_ &ta))
1516 {
1517 TRANSFER (ta, 1);
1518 return 1;
1519 }
1520 else
1521 return 0;
1522}
1523
1524static void
1525api_trace (SV *coro_sv, int flags) 1858api_trace (pTHX_ SV *coro_sv, int flags)
1526{ 1859{
1527 dTHX;
1528 struct coro *coro = SvSTATE (coro_sv); 1860 struct coro *coro = SvSTATE (coro_sv);
1529 1861
1862 if (coro->flags & CF_RUNNING)
1863 croak ("cannot enable tracing on a running coroutine, caught");
1864
1530 if (flags & CC_TRACE) 1865 if (flags & CC_TRACE)
1531 { 1866 {
1532 if (!coro->cctx) 1867 if (!coro->cctx)
1533 coro->cctx = cctx_new (); 1868 coro->cctx = cctx_new_run ();
1534 else if (!(coro->cctx->flags & CC_TRACE)) 1869 else if (!(coro->cctx->flags & CC_TRACE))
1535 croak ("cannot enable tracing on coroutine with custom stack"); 1870 croak ("cannot enable tracing on coroutine with custom stack, caught");
1536 1871
1537 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1872 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1538 } 1873 }
1539 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1874 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1540 { 1875 {
… …
1545 else 1880 else
1546 coro->slot->runops = RUNOPS_DEFAULT; 1881 coro->slot->runops = RUNOPS_DEFAULT;
1547 } 1882 }
1548} 1883}
1549 1884
1885static void
1886coro_call_on_destroy (pTHX_ struct coro *coro)
1887{
1888 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1889 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1890
1891 if (on_destroyp)
1892 {
1893 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1894
1895 while (AvFILLp (on_destroy) >= 0)
1896 {
1897 dSP; /* don't disturb outer sp */
1898 SV *cb = av_pop (on_destroy);
1899
1900 PUSHMARK (SP);
1901
1902 if (statusp)
1903 {
1904 int i;
1905 AV *status = (AV *)SvRV (*statusp);
1906 EXTEND (SP, AvFILLp (status) + 1);
1907
1908 for (i = 0; i <= AvFILLp (status); ++i)
1909 PUSHs (AvARRAY (status)[i]);
1910 }
1911
1912 PUTBACK;
1913 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1914 }
1915 }
1916}
1917
1918static void
1919slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{
1921 int i;
1922 HV *hv = (HV *)SvRV (coro_current);
1923 AV *av = newAV ();
1924
1925 av_extend (av, items - 1);
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928
1929 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1930
1931 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1932 api_ready (aTHX_ sv_manager);
1933
1934 frame->prepare = prepare_schedule;
1935 frame->check = slf_check_repeat;
1936
1937 /* as a minor optimisation, we could unwind all stacks here */
1938 /* but that puts extra pressure on pp_slf, and is not worth much */
1939 /*coro_unwind_stacks (aTHX);*/
1940}
1941
1942/*****************************************************************************/
1943/* async pool handler */
1944
1945static int
1946slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1947{
1948 HV *hv = (HV *)SvRV (coro_current);
1949 struct coro *coro = (struct coro *)frame->data;
1950
1951 if (!coro->invoke_cb)
1952 return 1; /* loop till we have invoke */
1953 else
1954 {
1955 hv_store (hv, "desc", sizeof ("desc") - 1,
1956 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1957
1958 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1959
1960 {
1961 dSP;
1962 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1963 PUTBACK;
1964 }
1965
1966 SvREFCNT_dec (GvAV (PL_defgv));
1967 GvAV (PL_defgv) = coro->invoke_av;
1968 coro->invoke_av = 0;
1969
1970 return 0;
1971 }
1972}
1973
1974static void
1975slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1976{
1977 HV *hv = (HV *)SvRV (coro_current);
1978 struct coro *coro = SvSTATE_hv ((SV *)hv);
1979
1980 if (expect_true (coro->saved_deffh))
1981 {
1982 /* subsequent iteration */
1983 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1984 coro->saved_deffh = 0;
1985
1986 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1987 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1988 {
1989 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1990 coro->invoke_av = newAV ();
1991
1992 frame->prepare = prepare_nop;
1993 }
1994 else
1995 {
1996 av_clear (GvAV (PL_defgv));
1997 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1998
1999 coro->prio = 0;
2000
2001 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2002 api_trace (aTHX_ coro_current, 0);
2003
2004 frame->prepare = prepare_schedule;
2005 av_push (av_async_pool, SvREFCNT_inc (hv));
2006 }
2007 }
2008 else
2009 {
2010 /* first iteration, simply fall through */
2011 frame->prepare = prepare_nop;
2012 }
2013
2014 frame->check = slf_check_pool_handler;
2015 frame->data = (void *)coro;
2016}
2017
2018/*****************************************************************************/
2019/* rouse callback */
2020
2021#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2022
2023static void
2024coro_rouse_callback (pTHX_ CV *cv)
2025{
2026 dXSARGS;
2027 SV *data = (SV *)S_GENSUB_ARG;
2028
2029 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2030 {
2031 /* first call, set args */
2032 SV *coro = SvRV (data);
2033 AV *av = newAV ();
2034
2035 SvRV_set (data, (SV *)av);
2036
2037 /* better take a full copy of the arguments */
2038 while (items--)
2039 av_store (av, items, newSVsv (ST (items)));
2040
2041 api_ready (aTHX_ coro);
2042 SvREFCNT_dec (coro);
2043 }
2044
2045 XSRETURN_EMPTY;
2046}
2047
2048static int
2049slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2050{
2051 SV *data = (SV *)frame->data;
2052
2053 if (CORO_THROW)
2054 return 0;
2055
2056 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2057 return 1;
2058
2059 /* now push all results on the stack */
2060 {
2061 dSP;
2062 AV *av = (AV *)SvRV (data);
2063 int i;
2064
2065 EXTEND (SP, AvFILLp (av) + 1);
2066 for (i = 0; i <= AvFILLp (av); ++i)
2067 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2068
2069 /* we have stolen the elements, so set length to zero and free */
2070 AvFILLp (av) = -1;
2071 av_undef (av);
2072
2073 PUTBACK;
2074 }
2075
2076 return 0;
2077}
2078
2079static void
2080slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2081{
2082 SV *cb;
2083
2084 if (items)
2085 cb = arg [0];
2086 else
2087 {
2088 struct coro *coro = SvSTATE_current;
2089
2090 if (!coro->rouse_cb)
2091 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2092
2093 cb = sv_2mortal (coro->rouse_cb);
2094 coro->rouse_cb = 0;
2095 }
2096
2097 if (!SvROK (cb)
2098 || SvTYPE (SvRV (cb)) != SVt_PVCV
2099 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2100 croak ("Coro::rouse_wait called with illegal callback argument,");
2101
2102 {
2103 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2104 SV *data = (SV *)S_GENSUB_ARG;
2105
2106 frame->data = (void *)data;
2107 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2108 frame->check = slf_check_rouse_wait;
2109 }
2110}
2111
2112static SV *
2113coro_new_rouse_cb (pTHX)
2114{
2115 HV *hv = (HV *)SvRV (coro_current);
2116 struct coro *coro = SvSTATE_hv (hv);
2117 SV *data = newRV_inc ((SV *)hv);
2118 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2119
2120 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2121 SvREFCNT_dec (data); /* magicext increases the refcount */
2122
2123 SvREFCNT_dec (coro->rouse_cb);
2124 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2125
2126 return cb;
2127}
2128
2129/*****************************************************************************/
2130/* schedule-like-function opcode (SLF) */
2131
2132static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2133static const CV *slf_cv;
2134static SV **slf_argv;
2135static int slf_argc, slf_arga; /* count, allocated */
2136static I32 slf_ax; /* top of stack, for restore */
2137
2138/* this restores the stack in the case we patched the entersub, to */
2139/* recreate the stack frame as perl will on following calls */
2140/* since entersub cleared the stack */
2141static OP *
2142pp_restore (pTHX)
2143{
2144 int i;
2145 SV **SP = PL_stack_base + slf_ax;
2146
2147 PUSHMARK (SP);
2148
2149 EXTEND (SP, slf_argc + 1);
2150
2151 for (i = 0; i < slf_argc; ++i)
2152 PUSHs (sv_2mortal (slf_argv [i]));
2153
2154 PUSHs ((SV *)CvGV (slf_cv));
2155
2156 RETURNOP (slf_restore.op_first);
2157}
2158
2159static void
2160slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2161{
2162 SV **arg = (SV **)slf_frame.data;
2163
2164 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2165}
2166
2167static void
2168slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 if (items != 2)
2171 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2172
2173 frame->prepare = slf_prepare_transfer;
2174 frame->check = slf_check_nop;
2175 frame->data = (void *)arg; /* let's hope it will stay valid */
2176}
2177
2178static void
2179slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2180{
2181 frame->prepare = prepare_schedule;
2182 frame->check = slf_check_nop;
2183}
2184
2185static void
2186slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2187{
2188 struct coro *next = (struct coro *)slf_frame.data;
2189
2190 SvREFCNT_inc_NN (next->hv);
2191 prepare_schedule_to (aTHX_ ta, next);
2192}
2193
2194static void
2195slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2196{
2197 if (!items)
2198 croak ("Coro::schedule_to expects a coroutine argument, caught");
2199
2200 frame->data = (void *)SvSTATE (arg [0]);
2201 frame->prepare = slf_prepare_schedule_to;
2202 frame->check = slf_check_nop;
2203}
2204
2205static void
2206slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 api_ready (aTHX_ SvRV (coro_current));
2209
2210 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2211}
2212
2213static void
2214slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2215{
2216 frame->prepare = prepare_cede;
2217 frame->check = slf_check_nop;
2218}
2219
2220static void
2221slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2222{
2223 frame->prepare = prepare_cede_notself;
2224 frame->check = slf_check_nop;
2225}
2226
2227/*
2228 * these not obviously related functions are all rolled into one
2229 * function to increase chances that they all will call transfer with the same
2230 * stack offset
2231 * SLF stands for "schedule-like-function".
2232 */
2233static OP *
2234pp_slf (pTHX)
2235{
2236 I32 checkmark; /* mark SP to see how many elements check has pushed */
2237
2238 /* set up the slf frame, unless it has already been set-up */
2239 /* the latter happens when a new coro has been started */
2240 /* or when a new cctx was attached to an existing coroutine */
2241 if (expect_true (!slf_frame.prepare))
2242 {
2243 /* first iteration */
2244 dSP;
2245 SV **arg = PL_stack_base + TOPMARK + 1;
2246 int items = SP - arg; /* args without function object */
2247 SV *gv = *sp;
2248
2249 /* do a quick consistency check on the "function" object, and if it isn't */
2250 /* for us, divert to the real entersub */
2251 if (SvTYPE (gv) != SVt_PVGV
2252 || !GvCV (gv)
2253 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2254 return PL_ppaddr[OP_ENTERSUB](aTHX);
2255
2256 if (!(PL_op->op_flags & OPf_STACKED))
2257 {
2258 /* ampersand-form of call, use @_ instead of stack */
2259 AV *av = GvAV (PL_defgv);
2260 arg = AvARRAY (av);
2261 items = AvFILLp (av) + 1;
2262 }
2263
2264 /* now call the init function, which needs to set up slf_frame */
2265 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2266 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2267
2268 /* pop args */
2269 SP = PL_stack_base + POPMARK;
2270
2271 PUTBACK;
2272 }
2273
2274 /* now that we have a slf_frame, interpret it! */
2275 /* we use a callback system not to make the code needlessly */
2276 /* complicated, but so we can run multiple perl coros from one cctx */
2277
2278 do
2279 {
2280 struct coro_transfer_args ta;
2281
2282 slf_frame.prepare (aTHX_ &ta);
2283 TRANSFER (ta, 0);
2284
2285 checkmark = PL_stack_sp - PL_stack_base;
2286 }
2287 while (slf_frame.check (aTHX_ &slf_frame));
2288
2289 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2290
2291 /* exception handling */
2292 if (expect_false (CORO_THROW))
2293 {
2294 SV *exception = sv_2mortal (CORO_THROW);
2295
2296 CORO_THROW = 0;
2297 sv_setsv (ERRSV, exception);
2298 croak (0);
2299 }
2300
2301 /* return value handling - mostly like entersub */
2302 /* make sure we put something on the stack in scalar context */
2303 if (GIMME_V == G_SCALAR)
2304 {
2305 dSP;
2306 SV **bot = PL_stack_base + checkmark;
2307
2308 if (sp == bot) /* too few, push undef */
2309 bot [1] = &PL_sv_undef;
2310 else if (sp != bot + 1) /* too many, take last one */
2311 bot [1] = *sp;
2312
2313 SP = bot + 1;
2314
2315 PUTBACK;
2316 }
2317
2318 return NORMAL;
2319}
2320
2321static void
2322api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2323{
2324 int i;
2325 SV **arg = PL_stack_base + ax;
2326 int items = PL_stack_sp - arg + 1;
2327
2328 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2329
2330 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2331 && PL_op->op_ppaddr != pp_slf)
2332 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2333
2334 CvFLAGS (cv) |= CVf_SLF;
2335 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2336 slf_cv = cv;
2337
2338 /* we patch the op, and then re-run the whole call */
2339 /* we have to put the same argument on the stack for this to work */
2340 /* and this will be done by pp_restore */
2341 slf_restore.op_next = (OP *)&slf_restore;
2342 slf_restore.op_type = OP_CUSTOM;
2343 slf_restore.op_ppaddr = pp_restore;
2344 slf_restore.op_first = PL_op;
2345
2346 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2347
2348 if (PL_op->op_flags & OPf_STACKED)
2349 {
2350 if (items > slf_arga)
2351 {
2352 slf_arga = items;
2353 free (slf_argv);
2354 slf_argv = malloc (slf_arga * sizeof (SV *));
2355 }
2356
2357 slf_argc = items;
2358
2359 for (i = 0; i < items; ++i)
2360 slf_argv [i] = SvREFCNT_inc (arg [i]);
2361 }
2362 else
2363 slf_argc = 0;
2364
2365 PL_op->op_ppaddr = pp_slf;
2366 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2367
2368 PL_op = (OP *)&slf_restore;
2369}
2370
2371/*****************************************************************************/
2372/* dynamic wind */
2373
2374static void
2375on_enterleave_call (pTHX_ SV *cb)
2376{
2377 dSP;
2378
2379 PUSHSTACK;
2380
2381 PUSHMARK (SP);
2382 PUTBACK;
2383 call_sv (cb, G_VOID | G_DISCARD);
2384 SPAGAIN;
2385
2386 POPSTACK;
2387}
2388
2389static SV *
2390coro_avp_pop_and_free (pTHX_ AV **avp)
2391{
2392 AV *av = *avp;
2393 SV *res = av_pop (av);
2394
2395 if (AvFILLp (av) < 0)
2396 {
2397 *avp = 0;
2398 SvREFCNT_dec (av);
2399 }
2400
2401 return res;
2402}
2403
2404static void
2405coro_pop_on_enter (pTHX_ void *coro)
2406{
2407 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2408 SvREFCNT_dec (cb);
2409}
2410
2411static void
2412coro_pop_on_leave (pTHX_ void *coro)
2413{
2414 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2415 on_enterleave_call (aTHX_ sv_2mortal (cb));
2416}
2417
2418/*****************************************************************************/
2419/* PerlIO::cede */
2420
2421typedef struct
2422{
2423 PerlIOBuf base;
2424 NV next, every;
2425} PerlIOCede;
2426
2427static IV
2428PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2429{
2430 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2431
2432 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2433 self->next = nvtime () + self->every;
2434
2435 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2436}
2437
2438static SV *
2439PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2440{
2441 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2442
2443 return newSVnv (self->every);
2444}
2445
2446static IV
2447PerlIOCede_flush (pTHX_ PerlIO *f)
2448{
2449 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2450 double now = nvtime ();
2451
2452 if (now >= self->next)
2453 {
2454 api_cede (aTHX);
2455 self->next = now + self->every;
2456 }
2457
2458 return PerlIOBuf_flush (aTHX_ f);
2459}
2460
2461static PerlIO_funcs PerlIO_cede =
2462{
2463 sizeof(PerlIO_funcs),
2464 "cede",
2465 sizeof(PerlIOCede),
2466 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2467 PerlIOCede_pushed,
2468 PerlIOBuf_popped,
2469 PerlIOBuf_open,
2470 PerlIOBase_binmode,
2471 PerlIOCede_getarg,
2472 PerlIOBase_fileno,
2473 PerlIOBuf_dup,
2474 PerlIOBuf_read,
2475 PerlIOBuf_unread,
2476 PerlIOBuf_write,
2477 PerlIOBuf_seek,
2478 PerlIOBuf_tell,
2479 PerlIOBuf_close,
2480 PerlIOCede_flush,
2481 PerlIOBuf_fill,
2482 PerlIOBase_eof,
2483 PerlIOBase_error,
2484 PerlIOBase_clearerr,
2485 PerlIOBase_setlinebuf,
2486 PerlIOBuf_get_base,
2487 PerlIOBuf_bufsiz,
2488 PerlIOBuf_get_ptr,
2489 PerlIOBuf_get_cnt,
2490 PerlIOBuf_set_ptrcnt,
2491};
2492
2493/*****************************************************************************/
2494/* Coro::Semaphore & Coro::Signal */
2495
2496static SV *
2497coro_waitarray_new (pTHX_ int count)
2498{
2499 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2500 AV *av = newAV ();
2501 SV **ary;
2502
2503 /* unfortunately, building manually saves memory */
2504 Newx (ary, 2, SV *);
2505 AvALLOC (av) = ary;
2506#if PERL_VERSION_ATLEAST (5,10,0)
2507 AvARRAY (av) = ary;
2508#else
2509 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2510 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2511 SvPVX ((SV *)av) = (char *)ary;
2512#endif
2513 AvMAX (av) = 1;
2514 AvFILLp (av) = 0;
2515 ary [0] = newSViv (count);
2516
2517 return newRV_noinc ((SV *)av);
2518}
2519
2520/* semaphore */
2521
2522static void
2523coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2524{
2525 SV *count_sv = AvARRAY (av)[0];
2526 IV count = SvIVX (count_sv);
2527
2528 count += adjust;
2529 SvIVX (count_sv) = count;
2530
2531 /* now wake up as many waiters as are expected to lock */
2532 while (count > 0 && AvFILLp (av) > 0)
2533 {
2534 SV *cb;
2535
2536 /* swap first two elements so we can shift a waiter */
2537 AvARRAY (av)[0] = AvARRAY (av)[1];
2538 AvARRAY (av)[1] = count_sv;
2539 cb = av_shift (av);
2540
2541 if (SvOBJECT (cb))
2542 {
2543 api_ready (aTHX_ cb);
2544 --count;
2545 }
2546 else if (SvTYPE (cb) == SVt_PVCV)
2547 {
2548 dSP;
2549 PUSHMARK (SP);
2550 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2551 PUTBACK;
2552 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2553 }
2554
2555 SvREFCNT_dec (cb);
2556 }
2557}
2558
2559static void
2560coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2561{
2562 /* call $sem->adjust (0) to possibly wake up some other waiters */
2563 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2564}
2565
2566static int
2567slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2568{
2569 AV *av = (AV *)frame->data;
2570 SV *count_sv = AvARRAY (av)[0];
2571
2572 /* if we are about to throw, don't actually acquire the lock, just throw */
2573 if (CORO_THROW)
2574 return 0;
2575 else if (SvIVX (count_sv) > 0)
2576 {
2577 SvSTATE_current->on_destroy = 0;
2578
2579 if (acquire)
2580 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2581 else
2582 coro_semaphore_adjust (aTHX_ av, 0);
2583
2584 return 0;
2585 }
2586 else
2587 {
2588 int i;
2589 /* if we were woken up but can't down, we look through the whole */
2590 /* waiters list and only add us if we aren't in there already */
2591 /* this avoids some degenerate memory usage cases */
2592
2593 for (i = 1; i <= AvFILLp (av); ++i)
2594 if (AvARRAY (av)[i] == SvRV (coro_current))
2595 return 1;
2596
2597 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2598 return 1;
2599 }
2600}
2601
2602static int
2603slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2604{
2605 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2606}
2607
2608static int
2609slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2610{
2611 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2612}
2613
2614static void
2615slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2616{
2617 AV *av = (AV *)SvRV (arg [0]);
2618
2619 if (SvIVX (AvARRAY (av)[0]) > 0)
2620 {
2621 frame->data = (void *)av;
2622 frame->prepare = prepare_nop;
2623 }
2624 else
2625 {
2626 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2627
2628 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2629 frame->prepare = prepare_schedule;
2630
2631 /* to avoid race conditions when a woken-up coro gets terminated */
2632 /* we arrange for a temporary on_destroy that calls adjust (0) */
2633 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2634 }
2635}
2636
2637static void
2638slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2639{
2640 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2641 frame->check = slf_check_semaphore_down;
2642}
2643
2644static void
2645slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2646{
2647 if (items >= 2)
2648 {
2649 /* callback form */
2650 AV *av = (AV *)SvRV (arg [0]);
2651 SV *cb_cv = s_get_cv_croak (arg [1]);
2652
2653 av_push (av, SvREFCNT_inc_NN (cb_cv));
2654
2655 if (SvIVX (AvARRAY (av)[0]) > 0)
2656 coro_semaphore_adjust (aTHX_ av, 0);
2657
2658 frame->prepare = prepare_nop;
2659 frame->check = slf_check_nop;
2660 }
2661 else
2662 {
2663 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2664 frame->check = slf_check_semaphore_wait;
2665 }
2666}
2667
2668/* signal */
2669
2670static void
2671coro_signal_wake (pTHX_ AV *av, int count)
2672{
2673 SvIVX (AvARRAY (av)[0]) = 0;
2674
2675 /* now signal count waiters */
2676 while (count > 0 && AvFILLp (av) > 0)
2677 {
2678 SV *cb;
2679
2680 /* swap first two elements so we can shift a waiter */
2681 cb = AvARRAY (av)[0];
2682 AvARRAY (av)[0] = AvARRAY (av)[1];
2683 AvARRAY (av)[1] = cb;
2684
2685 cb = av_shift (av);
2686
2687 if (SvTYPE (cb) == SVt_PVCV)
2688 {
2689 dSP;
2690 PUSHMARK (SP);
2691 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2692 PUTBACK;
2693 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2694 }
2695 else
2696 {
2697 api_ready (aTHX_ cb);
2698 sv_setiv (cb, 0); /* signal waiter */
2699 }
2700
2701 SvREFCNT_dec (cb);
2702
2703 --count;
2704 }
2705}
2706
2707static int
2708slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2709{
2710 /* if we are about to throw, also stop waiting */
2711 return SvROK ((SV *)frame->data) && !CORO_THROW;
2712}
2713
2714static void
2715slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2716{
2717 AV *av = (AV *)SvRV (arg [0]);
2718
2719 if (items >= 2)
2720 {
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2722 av_push (av, SvREFCNT_inc_NN (cb_cv));
2723
2724 if (SvIVX (AvARRAY (av)[0]))
2725 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2726
2727 frame->prepare = prepare_nop;
2728 frame->check = slf_check_nop;
2729 }
2730 else if (SvIVX (AvARRAY (av)[0]))
2731 {
2732 SvIVX (AvARRAY (av)[0]) = 0;
2733 frame->prepare = prepare_nop;
2734 frame->check = slf_check_nop;
2735 }
2736 else
2737 {
2738 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2739
2740 av_push (av, waiter);
2741
2742 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2743 frame->prepare = prepare_schedule;
2744 frame->check = slf_check_signal_wait;
2745 }
2746}
2747
2748/*****************************************************************************/
2749/* Coro::AIO */
2750
2751#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2752
2753/* helper storage struct */
2754struct io_state
2755{
2756 int errorno;
2757 I32 laststype; /* U16 in 5.10.0 */
2758 int laststatval;
2759 Stat_t statcache;
2760};
2761
2762static void
2763coro_aio_callback (pTHX_ CV *cv)
2764{
2765 dXSARGS;
2766 AV *state = (AV *)S_GENSUB_ARG;
2767 SV *coro = av_pop (state);
2768 SV *data_sv = newSV (sizeof (struct io_state));
2769
2770 av_extend (state, items - 1);
2771
2772 sv_upgrade (data_sv, SVt_PV);
2773 SvCUR_set (data_sv, sizeof (struct io_state));
2774 SvPOK_only (data_sv);
2775
2776 {
2777 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2778
2779 data->errorno = errno;
2780 data->laststype = PL_laststype;
2781 data->laststatval = PL_laststatval;
2782 data->statcache = PL_statcache;
2783 }
2784
2785 /* now build the result vector out of all the parameters and the data_sv */
2786 {
2787 int i;
2788
2789 for (i = 0; i < items; ++i)
2790 av_push (state, SvREFCNT_inc_NN (ST (i)));
2791 }
2792
2793 av_push (state, data_sv);
2794
2795 api_ready (aTHX_ coro);
2796 SvREFCNT_dec (coro);
2797 SvREFCNT_dec ((AV *)state);
2798}
2799
2800static int
2801slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2802{
2803 AV *state = (AV *)frame->data;
2804
2805 /* if we are about to throw, return early */
2806 /* this does not cancel the aio request, but at least */
2807 /* it quickly returns */
2808 if (CORO_THROW)
2809 return 0;
2810
2811 /* one element that is an RV? repeat! */
2812 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2813 return 1;
2814
2815 /* restore status */
2816 {
2817 SV *data_sv = av_pop (state);
2818 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2819
2820 errno = data->errorno;
2821 PL_laststype = data->laststype;
2822 PL_laststatval = data->laststatval;
2823 PL_statcache = data->statcache;
2824
2825 SvREFCNT_dec (data_sv);
2826 }
2827
2828 /* push result values */
2829 {
2830 dSP;
2831 int i;
2832
2833 EXTEND (SP, AvFILLp (state) + 1);
2834 for (i = 0; i <= AvFILLp (state); ++i)
2835 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2836
2837 PUTBACK;
2838 }
2839
2840 return 0;
2841}
2842
2843static void
2844slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2845{
2846 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2847 SV *coro_hv = SvRV (coro_current);
2848 struct coro *coro = SvSTATE_hv (coro_hv);
2849
2850 /* put our coroutine id on the state arg */
2851 av_push (state, SvREFCNT_inc_NN (coro_hv));
2852
2853 /* first see whether we have a non-zero priority and set it as AIO prio */
2854 if (coro->prio)
2855 {
2856 dSP;
2857
2858 static SV *prio_cv;
2859 static SV *prio_sv;
2860
2861 if (expect_false (!prio_cv))
2862 {
2863 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2864 prio_sv = newSViv (0);
2865 }
2866
2867 PUSHMARK (SP);
2868 sv_setiv (prio_sv, coro->prio);
2869 XPUSHs (prio_sv);
2870
2871 PUTBACK;
2872 call_sv (prio_cv, G_VOID | G_DISCARD);
2873 }
2874
2875 /* now call the original request */
2876 {
2877 dSP;
2878 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2879 int i;
2880
2881 PUSHMARK (SP);
2882
2883 /* first push all args to the stack */
2884 EXTEND (SP, items + 1);
2885
2886 for (i = 0; i < items; ++i)
2887 PUSHs (arg [i]);
2888
2889 /* now push the callback closure */
2890 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2891
2892 /* now call the AIO function - we assume our request is uncancelable */
2893 PUTBACK;
2894 call_sv ((SV *)req, G_VOID | G_DISCARD);
2895 }
2896
2897 /* now that the requets is going, we loop toll we have a result */
2898 frame->data = (void *)state;
2899 frame->prepare = prepare_schedule;
2900 frame->check = slf_check_aio_req;
2901}
2902
2903static void
2904coro_aio_req_xs (pTHX_ CV *cv)
2905{
2906 dXSARGS;
2907
2908 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2909
2910 XSRETURN_EMPTY;
2911}
2912
2913/*****************************************************************************/
2914
2915#if CORO_CLONE
2916# include "clone.c"
2917#endif
2918
1550MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1551 2920
1552PROTOTYPES: DISABLE 2921PROTOTYPES: DISABLE
1553 2922
1554BOOT: 2923BOOT:
1555{ 2924{
1556#ifdef USE_ITHREADS 2925#ifdef USE_ITHREADS
1557 MUTEX_INIT (&coro_mutex); 2926# if CORO_PTHREAD
2927 coro_thx = PERL_GET_CONTEXT;
2928# endif
1558#endif 2929#endif
1559 BOOT_PAGESIZE; 2930 BOOT_PAGESIZE;
1560 2931
2932 cctx_current = cctx_new_empty ();
2933
1561 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2934 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1562 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2935 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1563 2936
1564 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2937 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1565 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2938 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1566 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2939 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1567 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1568 2940
1569 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2941 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1570 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2942 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1571 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2943 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1572 2944
… …
1581 main_top_env = PL_top_env; 2953 main_top_env = PL_top_env;
1582 2954
1583 while (main_top_env->je_prev) 2955 while (main_top_env->je_prev)
1584 main_top_env = main_top_env->je_prev; 2956 main_top_env = main_top_env->je_prev;
1585 2957
2958 {
2959 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2960
2961 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2962 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2963
2964 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2965 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2966 }
2967
1586 coroapi.ver = CORO_API_VERSION; 2968 coroapi.ver = CORO_API_VERSION;
1587 coroapi.rev = CORO_API_REVISION; 2969 coroapi.rev = CORO_API_REVISION;
2970
1588 coroapi.transfer = api_transfer; 2971 coroapi.transfer = api_transfer;
1589 2972
2973 coroapi.sv_state = SvSTATE_;
2974 coroapi.execute_slf = api_execute_slf;
2975 coroapi.prepare_nop = prepare_nop;
2976 coroapi.prepare_schedule = prepare_schedule;
2977 coroapi.prepare_cede = prepare_cede;
2978 coroapi.prepare_cede_notself = prepare_cede_notself;
2979
2980 {
2981 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2982
2983 if (!svp) croak ("Time::HiRes is required");
2984 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2985
2986 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2987
2988 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2989 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2990 }
2991
1590 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2992 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1591} 2993}
1592 2994
1593SV * 2995SV *
1594new (char *klass, ...) 2996new (char *klass, ...)
2997 ALIAS:
2998 Coro::new = 1
1595 CODE: 2999 CODE:
1596{ 3000{
1597 struct coro *coro; 3001 struct coro *coro;
1598 MAGIC *mg; 3002 MAGIC *mg;
1599 HV *hv; 3003 HV *hv;
3004 SV *cb;
1600 int i; 3005 int i;
3006
3007 if (items > 1)
3008 {
3009 cb = s_get_cv_croak (ST (1));
3010
3011 if (!ix)
3012 {
3013 if (CvISXSUB (cb))
3014 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3015
3016 if (!CvROOT (cb))
3017 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3018 }
3019 }
1601 3020
1602 Newz (0, coro, 1, struct coro); 3021 Newz (0, coro, 1, struct coro);
1603 coro->args = newAV (); 3022 coro->args = newAV ();
1604 coro->flags = CF_NEW; 3023 coro->flags = CF_NEW;
1605 3024
… …
1610 coro->hv = hv = newHV (); 3029 coro->hv = hv = newHV ();
1611 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3030 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1612 mg->mg_flags |= MGf_DUP; 3031 mg->mg_flags |= MGf_DUP;
1613 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3032 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1614 3033
3034 if (items > 1)
3035 {
1615 av_extend (coro->args, items - 1); 3036 av_extend (coro->args, items - 1 + ix - 1);
3037
3038 if (ix)
3039 {
3040 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3041 cb = (SV *)cv_coro_run;
3042 }
3043
3044 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3045
1616 for (i = 1; i < items; i++) 3046 for (i = 2; i < items; i++)
1617 av_push (coro->args, newSVsv (ST (i))); 3047 av_push (coro->args, newSVsv (ST (i)));
3048 }
1618} 3049}
1619 OUTPUT: 3050 OUTPUT:
1620 RETVAL 3051 RETVAL
1621 3052
1622# these not obviously related functions are all rolled into the same xs
1623# function to increase chances that they all will call transfer with the same
1624# stack offset
1625void 3053void
1626_set_stacklevel (...) 3054transfer (...)
1627 ALIAS: 3055 PROTOTYPE: $$
1628 Coro::State::transfer = 1 3056 CODE:
1629 Coro::schedule = 2 3057 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1630 Coro::cede = 3
1631 Coro::cede_notself = 4
1632 CODE:
1633{
1634 struct transfer_args ta;
1635
1636 PUTBACK;
1637 switch (ix)
1638 {
1639 case 0:
1640 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1641 ta.next = 0;
1642 break;
1643
1644 case 1:
1645 if (items != 2)
1646 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1647
1648 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1649 break;
1650
1651 case 2:
1652 prepare_schedule (aTHX_ &ta);
1653 break;
1654
1655 case 3:
1656 prepare_cede (aTHX_ &ta);
1657 break;
1658
1659 case 4:
1660 if (!prepare_cede_notself (aTHX_ &ta))
1661 XSRETURN_EMPTY;
1662
1663 break;
1664 }
1665 SPAGAIN;
1666
1667 BARRIER;
1668 PUTBACK;
1669 TRANSFER (ta, 0);
1670 SPAGAIN; /* might be the sp of a different coroutine now */
1671 /* be extra careful not to ever do anything after TRANSFER */
1672}
1673 3058
1674bool 3059bool
1675_destroy (SV *coro_sv) 3060_destroy (SV *coro_sv)
1676 CODE: 3061 CODE:
1677 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3062 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1678 OUTPUT: 3063 OUTPUT:
1679 RETVAL 3064 RETVAL
1680 3065
1681void 3066void
1682_exit (code) 3067_exit (int code)
1683 int code
1684 PROTOTYPE: $ 3068 PROTOTYPE: $
1685 CODE: 3069 CODE:
1686 _exit (code); 3070 _exit (code);
1687 3071
3072SV *
3073clone (Coro::State coro)
3074 CODE:
3075{
3076#if CORO_CLONE
3077 struct coro *ncoro = coro_clone (aTHX_ coro);
3078 MAGIC *mg;
3079 /* TODO: too much duplication */
3080 ncoro->hv = newHV ();
3081 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3082 mg->mg_flags |= MGf_DUP;
3083 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3084#else
3085 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3086#endif
3087}
3088 OUTPUT:
3089 RETVAL
3090
1688int 3091int
1689cctx_stacksize (int new_stacksize = 0) 3092cctx_stacksize (int new_stacksize = 0)
3093 PROTOTYPE: ;$
1690 CODE: 3094 CODE:
1691 RETVAL = coro_stacksize; 3095 RETVAL = cctx_stacksize;
1692 if (new_stacksize) 3096 if (new_stacksize)
3097 {
1693 coro_stacksize = new_stacksize; 3098 cctx_stacksize = new_stacksize;
3099 ++cctx_gen;
3100 }
1694 OUTPUT: 3101 OUTPUT:
1695 RETVAL 3102 RETVAL
1696 3103
1697int 3104int
3105cctx_max_idle (int max_idle = 0)
3106 PROTOTYPE: ;$
3107 CODE:
3108 RETVAL = cctx_max_idle;
3109 if (max_idle > 1)
3110 cctx_max_idle = max_idle;
3111 OUTPUT:
3112 RETVAL
3113
3114int
1698cctx_count () 3115cctx_count ()
3116 PROTOTYPE:
1699 CODE: 3117 CODE:
1700 RETVAL = cctx_count; 3118 RETVAL = cctx_count;
1701 OUTPUT: 3119 OUTPUT:
1702 RETVAL 3120 RETVAL
1703 3121
1704int 3122int
1705cctx_idle () 3123cctx_idle ()
3124 PROTOTYPE:
1706 CODE: 3125 CODE:
1707 RETVAL = cctx_idle; 3126 RETVAL = cctx_idle;
1708 OUTPUT: 3127 OUTPUT:
1709 RETVAL 3128 RETVAL
1710 3129
1711void 3130void
1712list () 3131list ()
3132 PROTOTYPE:
1713 PPCODE: 3133 PPCODE:
1714{ 3134{
1715 struct coro *coro; 3135 struct coro *coro;
1716 for (coro = coro_first; coro; coro = coro->next) 3136 for (coro = coro_first; coro; coro = coro->next)
1717 if (coro->hv) 3137 if (coro->hv)
… …
1722call (Coro::State coro, SV *coderef) 3142call (Coro::State coro, SV *coderef)
1723 ALIAS: 3143 ALIAS:
1724 eval = 1 3144 eval = 1
1725 CODE: 3145 CODE:
1726{ 3146{
1727 if (coro->mainstack) 3147 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1728 { 3148 {
1729 struct coro temp; 3149 struct coro *current = SvSTATE_current;
1730 3150
1731 if (!(coro->flags & CF_RUNNING)) 3151 if (current != coro)
1732 { 3152 {
1733 PUTBACK; 3153 PUTBACK;
1734 save_perl (aTHX_ &temp); 3154 save_perl (aTHX_ current);
1735 load_perl (aTHX_ coro); 3155 load_perl (aTHX_ coro);
3156 SPAGAIN;
1736 } 3157 }
1737 3158
1738 {
1739 dSP;
1740 ENTER;
1741 SAVETMPS;
1742 PUTBACK;
1743 PUSHSTACK; 3159 PUSHSTACK;
3160
1744 PUSHMARK (SP); 3161 PUSHMARK (SP);
3162 PUTBACK;
1745 3163
1746 if (ix) 3164 if (ix)
1747 eval_sv (coderef, 0); 3165 eval_sv (coderef, 0);
1748 else 3166 else
1749 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3167 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1750 3168
1751 POPSTACK; 3169 POPSTACK;
1752 SPAGAIN; 3170 SPAGAIN;
1753 FREETMPS;
1754 LEAVE;
1755 PUTBACK;
1756 }
1757 3171
1758 if (!(coro->flags & CF_RUNNING)) 3172 if (current != coro)
1759 { 3173 {
3174 PUTBACK;
1760 save_perl (aTHX_ coro); 3175 save_perl (aTHX_ coro);
1761 load_perl (aTHX_ &temp); 3176 load_perl (aTHX_ current);
1762 SPAGAIN; 3177 SPAGAIN;
1763 } 3178 }
1764 } 3179 }
1765} 3180}
1766 3181
… …
1770 ALIAS: 3185 ALIAS:
1771 is_ready = CF_READY 3186 is_ready = CF_READY
1772 is_running = CF_RUNNING 3187 is_running = CF_RUNNING
1773 is_new = CF_NEW 3188 is_new = CF_NEW
1774 is_destroyed = CF_DESTROYED 3189 is_destroyed = CF_DESTROYED
3190 is_suspended = CF_SUSPENDED
1775 CODE: 3191 CODE:
1776 RETVAL = boolSV (coro->flags & ix); 3192 RETVAL = boolSV (coro->flags & ix);
1777 OUTPUT: 3193 OUTPUT:
1778 RETVAL 3194 RETVAL
1779 3195
1780void 3196void
3197throw (Coro::State self, SV *throw = &PL_sv_undef)
3198 PROTOTYPE: $;$
3199 CODE:
3200{
3201 struct coro *current = SvSTATE_current;
3202 SV **throwp = self == current ? &CORO_THROW : &self->except;
3203 SvREFCNT_dec (*throwp);
3204 SvGETMAGIC (throw);
3205 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3206}
3207
3208void
1781api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3209api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3210 PROTOTYPE: $;$
3211 C_ARGS: aTHX_ coro, flags
1782 3212
1783SV * 3213SV *
1784has_stack (Coro::State coro) 3214has_cctx (Coro::State coro)
1785 PROTOTYPE: $ 3215 PROTOTYPE: $
1786 CODE: 3216 CODE:
1787 RETVAL = boolSV (!!coro->cctx); 3217 /* maybe manage the running flag differently */
3218 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1788 OUTPUT: 3219 OUTPUT:
1789 RETVAL 3220 RETVAL
1790 3221
1791int 3222int
1792is_traced (Coro::State coro) 3223is_traced (Coro::State coro)
… …
1794 CODE: 3225 CODE:
1795 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3226 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796 OUTPUT: 3227 OUTPUT:
1797 RETVAL 3228 RETVAL
1798 3229
1799IV 3230UV
1800rss (Coro::State coro) 3231rss (Coro::State coro)
1801 PROTOTYPE: $ 3232 PROTOTYPE: $
1802 ALIAS: 3233 ALIAS:
1803 usecount = 1 3234 usecount = 1
1804 CODE: 3235 CODE:
… …
1810 OUTPUT: 3241 OUTPUT:
1811 RETVAL 3242 RETVAL
1812 3243
1813void 3244void
1814force_cctx () 3245force_cctx ()
3246 PROTOTYPE:
1815 CODE: 3247 CODE:
3248 cctx_current->idle_sp = 0;
3249
3250void
3251swap_defsv (Coro::State self)
3252 PROTOTYPE: $
3253 ALIAS:
3254 swap_defav = 1
3255 CODE:
3256 if (!self->slot)
3257 croak ("cannot swap state with coroutine that has no saved state,");
3258 else
3259 {
3260 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3261 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3262
3263 SV *tmp = *src; *src = *dst; *dst = tmp;
3264 }
3265
3266void
3267cancel (Coro::State self)
3268 CODE:
3269 coro_state_destroy (aTHX_ self);
3270 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3271
3272
3273SV *
3274enable_times (int enabled = enable_times)
3275 CODE:
3276{
3277 RETVAL = boolSV (enable_times);
3278
3279 if (enabled != enable_times)
3280 {
3281 enable_times = enabled;
3282
3283 coro_times_update ();
3284 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3285 }
3286}
3287 OUTPUT:
3288 RETVAL
3289
3290void
3291times (Coro::State self)
3292 PPCODE:
3293{
1816 struct coro *coro = SvSTATE (coro_current); 3294 struct coro *current = SvSTATE (coro_current);
1817 coro->cctx->idle_sp = 0; 3295
3296 if (expect_false (current == self))
3297 {
3298 coro_times_update ();
3299 coro_times_add (SvSTATE (coro_current));
3300 }
3301
3302 EXTEND (SP, 2);
3303 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3304 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3305
3306 if (expect_false (current == self))
3307 coro_times_sub (SvSTATE (coro_current));
3308}
1818 3309
1819MODULE = Coro::State PACKAGE = Coro 3310MODULE = Coro::State PACKAGE = Coro
1820 3311
1821BOOT: 3312BOOT:
1822{ 3313{
1823 int i;
1824
1825 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3314 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1826 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3315 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3316 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3317 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3318 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1827 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3319 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3320 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3321 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3322 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1828 3323
1829 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3324 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1830 SvREADONLY_on (coro_current); 3325 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3326 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3327 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1831 3328
1832 coro_stash = gv_stashpv ("Coro", TRUE); 3329 coro_stash = gv_stashpv ("Coro", TRUE);
1833 3330
1834 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3331 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1835 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3332 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1836 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3333 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1837 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3334 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1838 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3335 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1839 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3336 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1840
1841 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1842 coro_ready[i] = newAV ();
1843 3337
1844 { 3338 {
1845 SV *sv = perl_get_sv ("Coro::API", TRUE); 3339 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1846 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1847 3340
1848 coroapi.schedule = api_schedule; 3341 coroapi.schedule = api_schedule;
3342 coroapi.schedule_to = api_schedule_to;
1849 coroapi.cede = api_cede; 3343 coroapi.cede = api_cede;
1850 coroapi.cede_notself = api_cede_notself; 3344 coroapi.cede_notself = api_cede_notself;
1851 coroapi.ready = api_ready; 3345 coroapi.ready = api_ready;
1852 coroapi.is_ready = api_is_ready; 3346 coroapi.is_ready = api_is_ready;
1853 coroapi.nready = &coro_nready; 3347 coroapi.nready = coro_nready;
1854 coroapi.current = coro_current; 3348 coroapi.current = coro_current;
1855 3349
1856 GCoroAPI = &coroapi; 3350 /*GCoroAPI = &coroapi;*/
1857 sv_setiv (sv, (IV)&coroapi); 3351 sv_setiv (sv, (IV)&coroapi);
1858 SvREADONLY_on (sv); 3352 SvREADONLY_on (sv);
1859 } 3353 }
1860} 3354}
3355
3356void
3357terminate (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3360
3361void
3362schedule (...)
3363 CODE:
3364 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3365
3366void
3367schedule_to (...)
3368 CODE:
3369 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3370
3371void
3372cede_to (...)
3373 CODE:
3374 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3375
3376void
3377cede (...)
3378 CODE:
3379 CORO_EXECUTE_SLF_XS (slf_init_cede);
3380
3381void
3382cede_notself (...)
3383 CODE:
3384 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1861 3385
1862void 3386void
1863_set_current (SV *current) 3387_set_current (SV *current)
1864 PROTOTYPE: $ 3388 PROTOTYPE: $
1865 CODE: 3389 CODE:
1866 SvREFCNT_dec (SvRV (coro_current)); 3390 SvREFCNT_dec (SvRV (coro_current));
1867 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3391 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3392
3393void
3394_set_readyhook (SV *hook)
3395 PROTOTYPE: $
3396 CODE:
3397 SvREFCNT_dec (coro_readyhook);
3398 SvGETMAGIC (hook);
3399 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1868 3400
1869int 3401int
1870prio (Coro::State coro, int newprio = 0) 3402prio (Coro::State coro, int newprio = 0)
3403 PROTOTYPE: $;$
1871 ALIAS: 3404 ALIAS:
1872 nice = 1 3405 nice = 1
1873 CODE: 3406 CODE:
1874{ 3407{
1875 RETVAL = coro->prio; 3408 RETVAL = coro->prio;
… …
1877 if (items > 1) 3410 if (items > 1)
1878 { 3411 {
1879 if (ix) 3412 if (ix)
1880 newprio = coro->prio - newprio; 3413 newprio = coro->prio - newprio;
1881 3414
1882 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3415 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1883 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3416 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1884 3417
1885 coro->prio = newprio; 3418 coro->prio = newprio;
1886 } 3419 }
1887} 3420}
1888 OUTPUT: 3421 OUTPUT:
… …
1890 3423
1891SV * 3424SV *
1892ready (SV *self) 3425ready (SV *self)
1893 PROTOTYPE: $ 3426 PROTOTYPE: $
1894 CODE: 3427 CODE:
1895 RETVAL = boolSV (api_ready (self)); 3428 RETVAL = boolSV (api_ready (aTHX_ self));
1896 OUTPUT: 3429 OUTPUT:
1897 RETVAL 3430 RETVAL
1898 3431
1899int 3432int
1900nready (...) 3433nready (...)
… …
1903 RETVAL = coro_nready; 3436 RETVAL = coro_nready;
1904 OUTPUT: 3437 OUTPUT:
1905 RETVAL 3438 RETVAL
1906 3439
1907void 3440void
1908throw (Coro::State self, SV *throw = &PL_sv_undef) 3441suspend (Coro::State self)
1909 PROTOTYPE: $;$ 3442 PROTOTYPE: $
3443 CODE:
3444 self->flags |= CF_SUSPENDED;
3445
3446void
3447resume (Coro::State self)
3448 PROTOTYPE: $
3449 CODE:
3450 self->flags &= ~CF_SUSPENDED;
3451
3452void
3453_pool_handler (...)
3454 CODE:
3455 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3456
3457void
3458async_pool (SV *cv, ...)
3459 PROTOTYPE: &@
3460 PPCODE:
3461{
3462 HV *hv = (HV *)av_pop (av_async_pool);
3463 AV *av = newAV ();
3464 SV *cb = ST (0);
3465 int i;
3466
3467 av_extend (av, items - 2);
3468 for (i = 1; i < items; ++i)
3469 av_push (av, SvREFCNT_inc_NN (ST (i)));
3470
3471 if ((SV *)hv == &PL_sv_undef)
3472 {
3473 PUSHMARK (SP);
3474 EXTEND (SP, 2);
3475 PUSHs (sv_Coro);
3476 PUSHs ((SV *)cv_pool_handler);
3477 PUTBACK;
3478 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3479 SPAGAIN;
3480
3481 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3482 }
3483
3484 {
3485 struct coro *coro = SvSTATE_hv (hv);
3486
3487 assert (!coro->invoke_cb);
3488 assert (!coro->invoke_av);
3489 coro->invoke_cb = SvREFCNT_inc (cb);
3490 coro->invoke_av = av;
3491 }
3492
3493 api_ready (aTHX_ (SV *)hv);
3494
3495 if (GIMME_V != G_VOID)
3496 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3497 else
3498 SvREFCNT_dec (hv);
3499}
3500
3501SV *
3502rouse_cb ()
3503 PROTOTYPE:
3504 CODE:
3505 RETVAL = coro_new_rouse_cb (aTHX);
3506 OUTPUT:
3507 RETVAL
3508
3509void
3510rouse_wait (...)
3511 PROTOTYPE: ;$
3512 PPCODE:
3513 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3514
3515void
3516on_enter (SV *block)
3517 ALIAS:
3518 on_leave = 1
3519 PROTOTYPE: &
3520 CODE:
3521{
3522 struct coro *coro = SvSTATE_current;
3523 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3524
3525 block = s_get_cv_croak (block);
3526
3527 if (!*avp)
3528 *avp = newAV ();
3529
3530 av_push (*avp, SvREFCNT_inc (block));
3531
3532 if (!ix)
3533 on_enterleave_call (aTHX_ block);
3534
3535 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3536 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3537 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3538}
3539
3540
3541MODULE = Coro::State PACKAGE = PerlIO::cede
3542
3543BOOT:
3544 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3545
3546
3547MODULE = Coro::State PACKAGE = Coro::Semaphore
3548
3549SV *
3550new (SV *klass, SV *count = 0)
3551 CODE:
3552{
3553 int semcnt = 1;
3554
3555 if (count)
3556 {
3557 SvGETMAGIC (count);
3558
3559 if (SvOK (count))
3560 semcnt = SvIV (count);
3561 }
3562
3563 RETVAL = sv_bless (
3564 coro_waitarray_new (aTHX_ semcnt),
3565 GvSTASH (CvGV (cv))
3566 );
3567}
3568 OUTPUT:
3569 RETVAL
3570
3571# helper for Coro::Channel and others
3572SV *
3573_alloc (int count)
3574 CODE:
3575 RETVAL = coro_waitarray_new (aTHX_ count);
3576 OUTPUT:
3577 RETVAL
3578
3579SV *
3580count (SV *self)
3581 CODE:
3582 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3583 OUTPUT:
3584 RETVAL
3585
3586void
3587up (SV *self, int adjust = 1)
3588 ALIAS:
3589 adjust = 1
1910 CODE: 3590 CODE:
1911 SvREFCNT_dec (self->throw); 3591 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
1912 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1913 3592
1914void 3593void
1915swap_defsv (Coro::State self) 3594down (...)
1916 PROTOTYPE: $
1917 ALIAS:
1918 swap_defav = 1
1919 CODE: 3595 CODE:
1920 if (!self->slot) 3596 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
1921 croak ("cannot swap state with coroutine that has no saved state"); 3597
3598void
3599wait (...)
3600 CODE:
3601 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3602
3603void
3604try (SV *self)
3605 PPCODE:
3606{
3607 AV *av = (AV *)SvRV (self);
3608 SV *count_sv = AvARRAY (av)[0];
3609 IV count = SvIVX (count_sv);
3610
3611 if (count > 0)
3612 {
3613 --count;
3614 SvIVX (count_sv) = count;
3615 XSRETURN_YES;
3616 }
3617 else
3618 XSRETURN_NO;
3619}
3620
3621void
3622waiters (SV *self)
3623 PPCODE:
3624{
3625 AV *av = (AV *)SvRV (self);
3626 int wcount = AvFILLp (av) + 1 - 1;
3627
3628 if (GIMME_V == G_SCALAR)
3629 XPUSHs (sv_2mortal (newSViv (wcount)));
1922 else 3630 else
1923 { 3631 {
1924 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3632 int i;
1925 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3633 EXTEND (SP, wcount);
1926 3634 for (i = 1; i <= wcount; ++i)
1927 SV *tmp = *src; *src = *dst; *dst = tmp; 3635 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
1928 } 3636 }
3637}
1929 3638
1930# for async_pool speedup 3639MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3640
1931void 3641void
1932_pool_1 (SV *cb) 3642_may_delete (SV *sem, int count, int extra_refs)
3643 PPCODE:
3644{
3645 AV *av = (AV *)SvRV (sem);
3646
3647 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3648 && AvFILLp (av) == 0 /* no waiters, just count */
3649 && SvIV (AvARRAY (av)[0]) == count)
3650 XSRETURN_YES;
3651
3652 XSRETURN_NO;
3653}
3654
3655MODULE = Coro::State PACKAGE = Coro::Signal
3656
3657SV *
3658new (SV *klass)
1933 CODE: 3659 CODE:
1934{ 3660 RETVAL = sv_bless (
1935 struct coro *coro = SvSTATE (coro_current); 3661 coro_waitarray_new (aTHX_ 0),
1936 HV *hv = (HV *)SvRV (coro_current); 3662 GvSTASH (CvGV (cv))
1937 AV *defav = GvAV (PL_defgv); 3663 );
1938 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 3664 OUTPUT:
1939 AV *invoke_av; 3665 RETVAL
1940 int i, len;
1941
1942 if (!invoke)
1943 {
1944 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1945 croak ("\3async_pool terminate\2\n");
1946 }
1947
1948 SvREFCNT_dec (coro->saved_deffh);
1949 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1950
1951 hv_store (hv, "desc", sizeof ("desc") - 1,
1952 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1953
1954 invoke_av = (AV *)SvRV (invoke);
1955 len = av_len (invoke_av);
1956
1957 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1958
1959 if (len > 0)
1960 {
1961 av_fill (defav, len - 1);
1962 for (i = 0; i < len; ++i)
1963 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1964 }
1965
1966 SvREFCNT_dec (invoke);
1967}
1968 3666
1969void 3667void
1970_pool_2 (SV *cb) 3668wait (...)
3669 CODE:
3670 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3671
3672void
3673broadcast (SV *self)
3674 CODE:
3675{
3676 AV *av = (AV *)SvRV (self);
3677 coro_signal_wake (aTHX_ av, AvFILLp (av));
3678}
3679
3680void
3681send (SV *self)
3682 CODE:
3683{
3684 AV *av = (AV *)SvRV (self);
3685
3686 if (AvFILLp (av))
3687 coro_signal_wake (aTHX_ av, 1);
3688 else
3689 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3690}
3691
3692IV
3693awaited (SV *self)
1971 CODE: 3694 CODE:
1972{ 3695 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
1973 struct coro *coro = SvSTATE (coro_current);
1974
1975 sv_setsv (cb, &PL_sv_undef);
1976
1977 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1978 coro->saved_deffh = 0;
1979
1980 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1981 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1982 {
1983 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1984 croak ("\3async_pool terminate\2\n");
1985 }
1986
1987 av_clear (GvAV (PL_defgv));
1988 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1989 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1990
1991 coro->prio = 0;
1992
1993 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1994 api_trace (coro_current, 0);
1995
1996 av_push (av_async_pool, newSVsv (coro_current));
1997}
1998
1999
2000MODULE = Coro::State PACKAGE = Coro::AIO
2001
2002SV *
2003_get_state ()
2004 CODE:
2005{
2006 struct io_state *data;
2007
2008 RETVAL = newSV (sizeof (struct io_state));
2009 data = (struct io_state *)SvPVX (RETVAL);
2010 SvCUR_set (RETVAL, sizeof (struct io_state));
2011 SvPOK_only (RETVAL);
2012
2013 data->errorno = errno;
2014 data->laststype = PL_laststype;
2015 data->laststatval = PL_laststatval;
2016 data->statcache = PL_statcache;
2017}
2018 OUTPUT: 3696 OUTPUT:
2019 RETVAL 3697 RETVAL
2020 3698
3699
3700MODULE = Coro::State PACKAGE = Coro::AnyEvent
3701
3702BOOT:
3703 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3704
2021void 3705void
2022_set_state (char *data_) 3706_schedule (...)
2023 PROTOTYPE: $
2024 CODE: 3707 CODE:
2025{ 3708{
2026 struct io_state *data = (void *)data_; 3709 static int incede;
2027 3710
2028 errno = data->errorno; 3711 api_cede_notself (aTHX);
2029 PL_laststype = data->laststype;
2030 PL_laststatval = data->laststatval;
2031 PL_statcache = data->statcache;
2032}
2033 3712
3713 ++incede;
3714 while (coro_nready >= incede && api_cede (aTHX))
3715 ;
3716
3717 sv_setsv (sv_activity, &PL_sv_undef);
3718 if (coro_nready >= incede)
3719 {
3720 PUSHMARK (SP);
3721 PUTBACK;
3722 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3723 }
3724
3725 --incede;
3726}
3727
3728
3729MODULE = Coro::State PACKAGE = Coro::AIO
3730
3731void
3732_register (char *target, char *proto, SV *req)
3733 CODE:
3734{
3735 SV *req_cv = s_get_cv_croak (req);
3736 /* newXSproto doesn't return the CV on 5.8 */
3737 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3738 sv_setpv ((SV *)slf_cv, proto);
3739 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3740}
3741
3742MODULE = Coro::State PACKAGE = Coro::Select
3743
3744void
3745patch_pp_sselect ()
3746 CODE:
3747 if (!coro_old_pp_sselect)
3748 {
3749 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3750 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3751 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3752 }
3753
3754void
3755unpatch_pp_sselect ()
3756 CODE:
3757 if (coro_old_pp_sselect)
3758 {
3759 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3760 coro_old_pp_sselect = 0;
3761 }
3762
3763

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