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Comparing Coro/Coro/State.xs (file contents):
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC vs.
Revision 1.372 by root, Thu Oct 1 23:50:23 2009 UTC

… …
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h" 9#include "perliol.h"
10 10
11#include "patchlevel.h" 11#include "schmorp.h"
12 12
13#include <stdio.h> 13#include <stdio.h>
14#include <errno.h> 14#include <errno.h>
15#include <assert.h> 15#include <assert.h>
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.8.8 */
87#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0
89#endif
90#ifndef newSV
91# define newSV(l) NEWSV(0,l)
92#endif
93#ifndef SvREFCNT_inc_NN
94# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
95#endif
96
97/* 5.11 */
98#ifndef CxHASARGS
99# define CxHASARGS(cx) (cx)->blk_sub.hasargs
100#endif
101
102/* 5.8.7 */
103#ifndef SvRV_set
104# define SvRV_set(s,v) SvRV(s) = (v)
105#endif
106 55
107#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
108# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
109#endif 58#endif
110 59
… …
117# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
118#endif 67#endif
119 68
120/* 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
121 * 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
122#define dSTACKLEVEL volatile char stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
123#define STACKLEVEL ((void *)&stacklevel) 76# define STACKLEVEL ((void *)&stacklevel)
77#endif
124 78
125#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
126 80
127#if __GNUC__ >= 3 81#if __GNUC__ >= 3
128# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
129# define BARRIER __asm__ __volatile__ ("" : : : "memory")
130# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
131#else 85#else
132# define attribute(x) 86# define attribute(x)
133# define BARRIER
134# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
88# define INLINE static
135#endif 89#endif
136 90
137#define expect_false(expr) expect ((expr) != 0, 0) 91#define expect_false(expr) expect ((expr) != 0, 0)
138#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
139 93
140#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
141 95
142#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
143 98
144#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
145static perl_mutex coro_mutex; 100# if CORO_PTHREAD
146# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 101static void *coro_thx;
147# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 102# endif
148#else
149# define LOCK (void)0
150# define UNLOCK (void)0
151#endif 103#endif
152 104
153/* helper storage struct for Coro::AIO */ 105#ifdef __linux
154struct io_state 106# include <time.h> /* for timespec */
155{ 107# include <syscall.h> /* for SYS_* */
156 AV *res; 108# ifdef SYS_clock_gettime
157 int errorno; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
158 I32 laststype; 110# define CORO_CLOCK_MONOTONIC 1
159 int laststatval; 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
160 Stat_t statcache; 112# endif
161}; 113#endif
162 114
163static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
164 117
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;
165static size_t coro_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 126static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
170static 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 */
171 133
172static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 136static SV *rv_diehook;
175static SV *rv_warnhook; 137static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
177 139
178/* async_pool helper stuff */ 140/* async_pool helper stuff */
179static SV *sv_pool_rss; 141static SV *sv_pool_rss;
180static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
182 147
183/* Coro::AnyEvent */ 148/* Coro::AnyEvent */
184static SV *sv_activity; 149static SV *sv_activity;
150
151/* enable processtime/realtime profiling */
152static char enable_times;
153typedef U32 coro_ts[2];
154static coro_ts time_real, time_cpu;
155static char times_valid;
185 156
186static struct coro_cctx *cctx_first; 157static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 158static int cctx_count, cctx_idle;
188 159
189enum { 160enum {
… …
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 165 CC_TRACE_LINE = 0x10, /* trace each statement */
195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 166 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
196}; 167};
197 168
198/* this is a structure representing a c-level coroutine */ 169/* this is a structure representing a c-level coroutine */
199typedef struct coro_cctx { 170typedef struct coro_cctx
171{
200 struct coro_cctx *next; 172 struct coro_cctx *next;
201 173
202 /* the stack */ 174 /* the stack */
203 void *sptr; 175 void *sptr;
204 size_t ssize; 176 size_t ssize;
… …
207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 179 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 180 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
209 JMPENV *top_env; 181 JMPENV *top_env;
210 coro_context cctx; 182 coro_context cctx;
211 183
184 U32 gen;
212#if CORO_USE_VALGRIND 185#if CORO_USE_VALGRIND
213 int valgrind_id; 186 int valgrind_id;
214#endif 187#endif
215 unsigned char flags; 188 unsigned char flags;
216} coro_cctx; 189} coro_cctx;
217 190
191coro_cctx *cctx_current; /* the currently running cctx */
192
193/*****************************************************************************/
194
218enum { 195enum {
219 CF_RUNNING = 0x0001, /* coroutine is running */ 196 CF_RUNNING = 0x0001, /* coroutine is running */
220 CF_READY = 0x0002, /* coroutine is ready */ 197 CF_READY = 0x0002, /* coroutine is ready */
221 CF_NEW = 0x0004, /* has never been switched to */ 198 CF_NEW = 0x0004, /* has never been switched to */
222 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
200 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
223}; 201};
224 202
225/* the structure where most of the perl state is stored, overlaid on the cxstack */ 203/* the structure where most of the perl state is stored, overlaid on the cxstack */
226typedef struct { 204typedef struct
205{
227 SV *defsv; 206 SV *defsv;
228 AV *defav; 207 AV *defav;
229 SV *errsv; 208 SV *errsv;
230 SV *irsgv; 209 SV *irsgv;
210 HV *hinthv;
231#define VAR(name,type) type name; 211#define VAR(name,type) type name;
232# include "state.h" 212# include "state.h"
233#undef VAR 213#undef VAR
234} perl_slots; 214} perl_slots;
235 215
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 217
238/* this is a structure representing a perl-level coroutine */ 218/* this is a structure representing a perl-level coroutine */
239struct coro { 219struct coro {
240 /* the c coroutine allocated to this perl coroutine, if any */ 220 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 221 coro_cctx *cctx;
242 222
243 /* process data */ 223 /* ready queue */
224 struct coro *next_ready;
225
226 /* state data */
227 struct CoroSLF slf_frame; /* saved slf frame */
244 AV *mainstack; 228 AV *mainstack;
245 perl_slots *slot; /* basically the saved sp */ 229 perl_slots *slot; /* basically the saved sp */
246 230
231 CV *startcv; /* the CV to execute */
247 AV *args; /* data associated with this coroutine (initial args) */ 232 AV *args; /* data associated with this coroutine (initial args) */
248 int refcnt; /* coroutines are refcounted, yes */ 233 int refcnt; /* coroutines are refcounted, yes */
249 int flags; /* CF_ flags */ 234 int flags; /* CF_ flags */
250 HV *hv; /* the perl hash associated with this coro, if any */ 235 HV *hv; /* the perl hash associated with this coro, if any */
236 void (*on_destroy)(pTHX_ struct coro *coro);
251 237
252 /* statistics */ 238 /* statistics */
253 int usecount; /* number of transfers to this coro */ 239 int usecount; /* number of transfers to this coro */
254 240
255 /* coro process data */ 241 /* coro process data */
256 int prio; 242 int prio;
257 SV *throw; /* exception to be thrown */ 243 SV *except; /* exception to be thrown */
244 SV *rouse_cb;
258 245
259 /* async_pool */ 246 /* async_pool */
260 SV *saved_deffh; 247 SV *saved_deffh;
248 SV *invoke_cb;
249 AV *invoke_av;
250
251 /* on_enter/on_leave */
252 AV *on_enter;
253 AV *on_leave;
254
255 /* times */
256 coro_ts t_cpu, t_real;
261 257
262 /* linked list */ 258 /* linked list */
263 struct coro *next, *prev; 259 struct coro *next, *prev;
264}; 260};
265 261
266typedef struct coro *Coro__State; 262typedef struct coro *Coro__State;
267typedef struct coro *Coro__State_or_hashref; 263typedef struct coro *Coro__State_or_hashref;
268 264
265/* the following variables are effectively part of the perl context */
266/* and get copied between struct coro and these variables */
267/* the mainr easonw e don't support windows process emulation */
268static struct CoroSLF slf_frame; /* the current slf frame */
269
269/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
270 271
271#define PRIO_MAX 3 272#define CORO_PRIO_MAX 3
272#define PRIO_HIGH 1 273#define CORO_PRIO_HIGH 1
273#define PRIO_NORMAL 0 274#define CORO_PRIO_NORMAL 0
274#define PRIO_LOW -1 275#define CORO_PRIO_LOW -1
275#define PRIO_IDLE -3 276#define CORO_PRIO_IDLE -3
276#define PRIO_MIN -4 277#define CORO_PRIO_MIN -4
277 278
278/* for Coro.pm */ 279/* for Coro.pm */
279static SV *coro_current; 280static SV *coro_current;
280static SV *coro_readyhook; 281static SV *coro_readyhook;
281static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 282static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
282static int coro_nready; 283static CV *cv_coro_run, *cv_coro_terminate;
283static struct coro *coro_first; 284static struct coro *coro_first;
285#define coro_nready coroapi.nready
286
287/** Coro::Select ************************************************************/
288
289static OP *(*coro_old_pp_sselect) (pTHX);
290static SV *coro_select_select;
291
292/* horrible hack, but if it works... */
293static OP *
294coro_pp_sselect (pTHX)
295{
296 dSP;
297 PUSHMARK (SP - 4); /* fake argument list */
298 XPUSHs (coro_select_select);
299 PUTBACK;
300
301 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
302 PL_op->op_flags |= OPf_STACKED;
303 PL_op->op_private = 0;
304 return PL_ppaddr [OP_ENTERSUB](aTHX);
305}
284 306
285/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
286 308
287static SV * 309static SV *
288coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
312 get_hv (name, create); 334 get_hv (name, create);
313#endif 335#endif
314 return get_hv (name, create); 336 return get_hv (name, create);
315} 337}
316 338
339INLINE void
340coro_times_update ()
341{
342#ifdef coro_clock_gettime
343 struct timespec ts;
344
345 ts.tv_sec = ts.tv_nsec = 0;
346 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
347 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
348
349 ts.tv_sec = ts.tv_nsec = 0;
350 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
351 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
352#else
353 dTHX;
354 UV tv[2];
355
356 u2time (aTHX_ tv);
357 time_real [0] = tv [0];
358 time_real [1] = tv [1] * 1000;
359#endif
360}
361
362INLINE void
363coro_times_add (struct coro *c)
364{
365 c->t_real [1] += time_real [1];
366 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
367 c->t_real [0] += time_real [0];
368
369 c->t_cpu [1] += time_cpu [1];
370 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
371 c->t_cpu [0] += time_cpu [0];
372}
373
374INLINE void
375coro_times_sub (struct coro *c)
376{
377 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
378 c->t_real [1] -= time_real [1];
379 c->t_real [0] -= time_real [0];
380
381 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
382 c->t_cpu [1] -= time_cpu [1];
383 c->t_cpu [0] -= time_cpu [0];
384}
385
386/*****************************************************************************/
387/* magic glue */
388
389#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391
392#define CORO_MAGIC_NN(sv, type) \
393 (expect_true (SvMAGIC (sv)->mg_type == type) \
394 ? SvMAGIC (sv) \
395 : mg_find (sv, type))
396
397#define CORO_MAGIC(sv, type) \
398 (expect_true (SvMAGIC (sv)) \
399 ? CORO_MAGIC_NN (sv, type) \
400 : 0)
401
402#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
403#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
404
405INLINE struct coro *
406SvSTATE_ (pTHX_ SV *coro)
407{
408 HV *stash;
409 MAGIC *mg;
410
411 if (SvROK (coro))
412 coro = SvRV (coro);
413
414 if (expect_false (SvTYPE (coro) != SVt_PVHV))
415 croak ("Coro::State object required");
416
417 stash = SvSTASH (coro);
418 if (expect_false (stash != coro_stash && stash != coro_state_stash))
419 {
420 /* very slow, but rare, check */
421 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
422 croak ("Coro::State object required");
423 }
424
425 mg = CORO_MAGIC_state (coro);
426 return (struct coro *)mg->mg_ptr;
427}
428
429#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
430
431/* faster than SvSTATE, but expects a coroutine hv */
432#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
433#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
434
435/*****************************************************************************/
436/* padlist management and caching */
437
317static AV * 438static AV *
318coro_clone_padlist (pTHX_ CV *cv) 439coro_derive_padlist (pTHX_ CV *cv)
319{ 440{
320 AV *padlist = CvPADLIST (cv); 441 AV *padlist = CvPADLIST (cv);
321 AV *newpadlist, *newpad; 442 AV *newpadlist, *newpad;
322 443
323 newpadlist = newAV (); 444 newpadlist = newAV ();
… …
328 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 449 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
329#endif 450#endif
330 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 451 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
331 --AvFILLp (padlist); 452 --AvFILLp (padlist);
332 453
333 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 454 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
334 av_store (newpadlist, 1, (SV *)newpad); 455 av_store (newpadlist, 1, (SV *)newpad);
335 456
336 return newpadlist; 457 return newpadlist;
337} 458}
338 459
339static void 460static void
340free_padlist (pTHX_ AV *padlist) 461free_padlist (pTHX_ AV *padlist)
341{ 462{
342 /* may be during global destruction */ 463 /* may be during global destruction */
343 if (SvREFCNT (padlist)) 464 if (!IN_DESTRUCT)
344 { 465 {
345 I32 i = AvFILLp (padlist); 466 I32 i = AvFILLp (padlist);
346 while (i >= 0) 467
468 while (i > 0) /* special-case index 0 */
347 { 469 {
348 SV **svp = av_fetch (padlist, i--, FALSE); 470 /* we try to be extra-careful here */
349 if (svp) 471 AV *av = (AV *)AvARRAY (padlist)[i--];
350 { 472 I32 j = AvFILLp (av);
351 SV *sv; 473
352 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 474 while (j >= 0)
475 SvREFCNT_dec (AvARRAY (av)[j--]);
476
477 AvFILLp (av) = -1;
353 SvREFCNT_dec (sv); 478 SvREFCNT_dec (av);
354
355 SvREFCNT_dec (*svp);
356 }
357 } 479 }
358 480
481 SvREFCNT_dec (AvARRAY (padlist)[0]);
482
483 AvFILLp (padlist) = -1;
359 SvREFCNT_dec ((SV*)padlist); 484 SvREFCNT_dec ((SV*)padlist);
360 } 485 }
361} 486}
362 487
363static int 488static int
364coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 489coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
365{ 490{
366 AV *padlist; 491 AV *padlist;
367 AV *av = (AV *)mg->mg_obj; 492 AV *av = (AV *)mg->mg_obj;
493
494 /* perl manages to free our internal AV and _then_ call us */
495 if (IN_DESTRUCT)
496 return 0;
368 497
369 /* casting is fun. */ 498 /* casting is fun. */
370 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 499 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
371 free_padlist (aTHX_ padlist); 500 free_padlist (aTHX_ padlist);
372 501
373 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 502 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
374 503
375 return 0; 504 return 0;
376} 505}
377
378#define CORO_MAGIC_type_cv PERL_MAGIC_ext
379#define CORO_MAGIC_type_state PERL_MAGIC_ext
380 506
381static MGVTBL coro_cv_vtbl = { 507static MGVTBL coro_cv_vtbl = {
382 0, 0, 0, 0, 508 0, 0, 0, 0,
383 coro_cv_free 509 coro_cv_free
384}; 510};
385
386#define CORO_MAGIC(sv,type) \
387 SvMAGIC (sv) \
388 ? SvMAGIC (sv)->mg_type == type \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type) \
391 : 0
392
393#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
394#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
395
396static struct coro *
397SvSTATE_ (pTHX_ SV *coro)
398{
399 HV *stash;
400 MAGIC *mg;
401
402 if (SvROK (coro))
403 coro = SvRV (coro);
404
405 if (expect_false (SvTYPE (coro) != SVt_PVHV))
406 croak ("Coro::State object required");
407
408 stash = SvSTASH (coro);
409 if (expect_false (stash != coro_stash && stash != coro_state_stash))
410 {
411 /* very slow, but rare, check */
412 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
413 croak ("Coro::State object required");
414 }
415
416 mg = CORO_MAGIC_state (coro);
417 return (struct coro *)mg->mg_ptr;
418}
419
420#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
421 511
422/* the next two functions merely cache the padlists */ 512/* the next two functions merely cache the padlists */
423static void 513static void
424get_padlist (pTHX_ CV *cv) 514get_padlist (pTHX_ CV *cv)
425{ 515{
… …
431 else 521 else
432 { 522 {
433#if CORO_PREFER_PERL_FUNCTIONS 523#if CORO_PREFER_PERL_FUNCTIONS
434 /* this is probably cleaner? but also slower! */ 524 /* this is probably cleaner? but also slower! */
435 /* in practise, it seems to be less stable */ 525 /* in practise, it seems to be less stable */
436 CV *cp = Perl_cv_clone (cv); 526 CV *cp = Perl_cv_clone (aTHX_ cv);
437 CvPADLIST (cv) = CvPADLIST (cp); 527 CvPADLIST (cv) = CvPADLIST (cp);
438 CvPADLIST (cp) = 0; 528 CvPADLIST (cp) = 0;
439 SvREFCNT_dec (cp); 529 SvREFCNT_dec (cp);
440#else 530#else
441 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 531 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
442#endif 532#endif
443 } 533 }
444} 534}
445 535
446static void 536static void
… …
453 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 543 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
454 544
455 av = (AV *)mg->mg_obj; 545 av = (AV *)mg->mg_obj;
456 546
457 if (expect_false (AvFILLp (av) >= AvMAX (av))) 547 if (expect_false (AvFILLp (av) >= AvMAX (av)))
458 av_extend (av, AvMAX (av) + 1); 548 av_extend (av, AvFILLp (av) + 1);
459 549
460 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 550 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
461} 551}
462 552
463/** load & save, init *******************************************************/ 553/** load & save, init *******************************************************/
554
555static void
556on_enterleave_call (pTHX_ SV *cb);
464 557
465static void 558static void
466load_perl (pTHX_ Coro__State c) 559load_perl (pTHX_ Coro__State c)
467{ 560{
468 perl_slots *slot = c->slot; 561 perl_slots *slot = c->slot;
469 c->slot = 0; 562 c->slot = 0;
470 563
471 PL_mainstack = c->mainstack; 564 PL_mainstack = c->mainstack;
472 565
473 GvSV (PL_defgv) = slot->defsv; 566 GvSV (PL_defgv) = slot->defsv;
474 GvAV (PL_defgv) = slot->defav; 567 GvAV (PL_defgv) = slot->defav;
475 GvSV (PL_errgv) = slot->errsv; 568 GvSV (PL_errgv) = slot->errsv;
476 GvSV (irsgv) = slot->irsgv; 569 GvSV (irsgv) = slot->irsgv;
570 GvHV (PL_hintgv) = slot->hinthv;
477 571
478 #define VAR(name,type) PL_ ## name = slot->name; 572 #define VAR(name,type) PL_ ## name = slot->name;
479 # include "state.h" 573 # include "state.h"
480 #undef VAR 574 #undef VAR
481 575
… …
492 CvPADLIST (cv) = (AV *)POPs; 586 CvPADLIST (cv) = (AV *)POPs;
493 } 587 }
494 588
495 PUTBACK; 589 PUTBACK;
496 } 590 }
591
592 slf_frame = c->slf_frame;
593 CORO_THROW = c->except;
594
595 if (expect_false (enable_times))
596 {
597 if (expect_false (!times_valid))
598 coro_times_update ();
599
600 coro_times_sub (c);
601 }
602
603 if (expect_false (c->on_enter))
604 {
605 int i;
606
607 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
608 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
609 }
497} 610}
498 611
499static void 612static void
500save_perl (pTHX_ Coro__State c) 613save_perl (pTHX_ Coro__State c)
501{ 614{
615 if (expect_false (c->on_leave))
616 {
617 int i;
618
619 for (i = AvFILLp (c->on_leave); i >= 0; --i)
620 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
621 }
622
623 times_valid = 0;
624
625 if (expect_false (enable_times))
626 {
627 coro_times_update (); times_valid = 1;
628 coro_times_add (c);
629 }
630
631 c->except = CORO_THROW;
632 c->slf_frame = slf_frame;
633
502 { 634 {
503 dSP; 635 dSP;
504 I32 cxix = cxstack_ix; 636 I32 cxix = cxstack_ix;
505 PERL_CONTEXT *ccstk = cxstack; 637 PERL_CONTEXT *ccstk = cxstack;
506 PERL_SI *top_si = PL_curstackinfo; 638 PERL_SI *top_si = PL_curstackinfo;
… …
516 { 648 {
517 while (expect_true (cxix >= 0)) 649 while (expect_true (cxix >= 0))
518 { 650 {
519 PERL_CONTEXT *cx = &ccstk[cxix--]; 651 PERL_CONTEXT *cx = &ccstk[cxix--];
520 652
521 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 653 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
522 { 654 {
523 CV *cv = cx->blk_sub.cv; 655 CV *cv = cx->blk_sub.cv;
524 656
525 if (expect_true (CvDEPTH (cv))) 657 if (expect_true (CvDEPTH (cv)))
526 { 658 {
… …
550 /* we manually unroll here, as usually 2 slots is enough */ 682 /* we manually unroll here, as usually 2 slots is enough */
551 if (SLOT_COUNT >= 1) CXINC; 683 if (SLOT_COUNT >= 1) CXINC;
552 if (SLOT_COUNT >= 2) CXINC; 684 if (SLOT_COUNT >= 2) CXINC;
553 if (SLOT_COUNT >= 3) CXINC; 685 if (SLOT_COUNT >= 3) CXINC;
554 { 686 {
555 int i; 687 unsigned int i;
556 for (i = 3; i < SLOT_COUNT; ++i) 688 for (i = 3; i < SLOT_COUNT; ++i)
557 CXINC; 689 CXINC;
558 } 690 }
559 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 691 cxstack_ix -= SLOT_COUNT; /* undo allocation */
560 692
561 c->mainstack = PL_mainstack; 693 c->mainstack = PL_mainstack;
562 694
563 { 695 {
564 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 696 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
565 697
566 slot->defav = GvAV (PL_defgv); 698 slot->defav = GvAV (PL_defgv);
567 slot->defsv = DEFSV; 699 slot->defsv = DEFSV;
568 slot->errsv = ERRSV; 700 slot->errsv = ERRSV;
569 slot->irsgv = GvSV (irsgv); 701 slot->irsgv = GvSV (irsgv);
702 slot->hinthv = GvHV (PL_hintgv);
570 703
571 #define VAR(name,type) slot->name = PL_ ## name; 704 #define VAR(name,type) slot->name = PL_ ## name;
572 # include "state.h" 705 # include "state.h"
573 #undef VAR 706 #undef VAR
574 } 707 }
575} 708}
576 709
577/* 710/*
578 * allocate various perl stacks. This is an exact copy 711 * allocate various perl stacks. This is almost an exact copy
579 * of perl.c:init_stacks, except that it uses less memory 712 * of perl.c:init_stacks, except that it uses less memory
580 * on the (sometimes correct) assumption that coroutines do 713 * on the (sometimes correct) assumption that coroutines do
581 * not usually need a lot of stackspace. 714 * not usually need a lot of stackspace.
582 */ 715 */
583#if CORO_PREFER_PERL_FUNCTIONS 716#if CORO_PREFER_PERL_FUNCTIONS
584# define coro_init_stacks init_stacks 717# define coro_init_stacks(thx) init_stacks ()
585#else 718#else
586static void 719static void
587coro_init_stacks (pTHX) 720coro_init_stacks (pTHX)
588{ 721{
589 PL_curstackinfo = new_stackinfo(32, 8); 722 PL_curstackinfo = new_stackinfo(32, 8);
… …
626 759
627/* 760/*
628 * destroy the stacks, the callchain etc... 761 * destroy the stacks, the callchain etc...
629 */ 762 */
630static void 763static void
631coro_destroy_stacks (pTHX) 764coro_destruct_stacks (pTHX)
632{ 765{
633 while (PL_curstackinfo->si_next) 766 while (PL_curstackinfo->si_next)
634 PL_curstackinfo = PL_curstackinfo->si_next; 767 PL_curstackinfo = PL_curstackinfo->si_next;
635 768
636 while (PL_curstackinfo) 769 while (PL_curstackinfo)
… …
652#if !PERL_VERSION_ATLEAST (5,10,0) 785#if !PERL_VERSION_ATLEAST (5,10,0)
653 Safefree (PL_retstack); 786 Safefree (PL_retstack);
654#endif 787#endif
655} 788}
656 789
790#define CORO_RSS \
791 rss += sizeof (SYM (curstackinfo)); \
792 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
793 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
794 rss += SYM (tmps_max) * sizeof (SV *); \
795 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
796 rss += SYM (scopestack_max) * sizeof (I32); \
797 rss += SYM (savestack_max) * sizeof (ANY);
798
657static size_t 799static size_t
658coro_rss (pTHX_ struct coro *coro) 800coro_rss (pTHX_ struct coro *coro)
659{ 801{
660 size_t rss = sizeof (*coro); 802 size_t rss = sizeof (*coro);
661 803
662 if (coro->mainstack) 804 if (coro->mainstack)
663 { 805 {
664 perl_slots tmp_slot;
665 perl_slots *slot;
666
667 if (coro->flags & CF_RUNNING) 806 if (coro->flags & CF_RUNNING)
668 { 807 {
669 slot = &tmp_slot; 808 #define SYM(sym) PL_ ## sym
670 809 CORO_RSS;
671 #define VAR(name,type) slot->name = PL_ ## name;
672 # include "state.h"
673 #undef VAR 810 #undef SYM
674 } 811 }
675 else 812 else
676 slot = coro->slot;
677
678 if (slot)
679 { 813 {
680 rss += sizeof (slot->curstackinfo); 814 #define SYM(sym) coro->slot->sym
681 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 815 CORO_RSS;
682 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 816 #undef SYM
683 rss += slot->tmps_max * sizeof (SV *);
684 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
685 rss += slot->scopestack_max * sizeof (I32);
686 rss += slot->savestack_max * sizeof (ANY);
687
688#if !PERL_VERSION_ATLEAST (5,10,0)
689 rss += slot->retstack_max * sizeof (OP *);
690#endif
691 } 817 }
692 } 818 }
693 819
694 return rss; 820 return rss;
695} 821}
… …
708#endif 834#endif
709 835
710/* 836/*
711 * This overrides the default magic get method of %SIG elements. 837 * This overrides the default magic get method of %SIG elements.
712 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 838 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
713 * and instead of tryign to save and restore the hash elements, we just provide 839 * and instead of trying to save and restore the hash elements, we just provide
714 * readback here. 840 * readback here.
715 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
716 * not expecting this to actually change the hook. This is a potential problem
717 * when a schedule happens then, but we ignore this.
718 */ 841 */
719static int 842static int
720coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 843coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
721{ 844{
722 const char *s = MgPV_nolen_const (mg); 845 const char *s = MgPV_nolen_const (mg);
… …
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 898 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776 899
777 if (svp) 900 if (svp)
778 { 901 {
779 SV *old = *svp; 902 SV *old = *svp;
780 *svp = newSVsv (sv); 903 *svp = SvOK (sv) ? newSVsv (sv) : 0;
781 SvREFCNT_dec (old); 904 SvREFCNT_dec (old);
782 return 0; 905 return 0;
783 } 906 }
784 } 907 }
785 908
786 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 909 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
787} 910}
788 911
789static void 912static void
913prepare_nop (pTHX_ struct coro_transfer_args *ta)
914{
915 /* kind of mega-hacky, but works */
916 ta->next = ta->prev = (struct coro *)ta;
917}
918
919static int
920slf_check_nop (pTHX_ struct CoroSLF *frame)
921{
922 return 0;
923}
924
925static int
926slf_check_repeat (pTHX_ struct CoroSLF *frame)
927{
928 return 1;
929}
930
931static UNOP coro_setup_op;
932
933static void NOINLINE /* noinline to keep it out of the transfer fast path */
790coro_setup (pTHX_ struct coro *coro) 934coro_setup (pTHX_ struct coro *coro)
791{ 935{
792 /* 936 /*
793 * emulate part of the perl startup here. 937 * emulate part of the perl startup here.
794 */ 938 */
… …
796 940
797 PL_runops = RUNOPS_DEFAULT; 941 PL_runops = RUNOPS_DEFAULT;
798 PL_curcop = &PL_compiling; 942 PL_curcop = &PL_compiling;
799 PL_in_eval = EVAL_NULL; 943 PL_in_eval = EVAL_NULL;
800 PL_comppad = 0; 944 PL_comppad = 0;
945 PL_comppad_name = 0;
946 PL_comppad_name_fill = 0;
947 PL_comppad_name_floor = 0;
801 PL_curpm = 0; 948 PL_curpm = 0;
802 PL_curpad = 0; 949 PL_curpad = 0;
803 PL_localizing = 0; 950 PL_localizing = 0;
804 PL_dirty = 0; 951 PL_dirty = 0;
805 PL_restartop = 0; 952 PL_restartop = 0;
806#if PERL_VERSION_ATLEAST (5,10,0) 953#if PERL_VERSION_ATLEAST (5,10,0)
807 PL_parser = 0; 954 PL_parser = 0;
808#endif 955#endif
956 PL_hints = 0;
809 957
810 /* recreate the die/warn hooks */ 958 /* recreate the die/warn hooks */
811 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 959 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
812 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 960 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
813 961
814 GvSV (PL_defgv) = newSV (0); 962 GvSV (PL_defgv) = newSV (0);
815 GvAV (PL_defgv) = coro->args; coro->args = 0; 963 GvAV (PL_defgv) = coro->args; coro->args = 0;
816 GvSV (PL_errgv) = newSV (0); 964 GvSV (PL_errgv) = newSV (0);
817 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 965 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
966 GvHV (PL_hintgv) = 0;
818 PL_rs = newSVsv (GvSV (irsgv)); 967 PL_rs = newSVsv (GvSV (irsgv));
819 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 968 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
820 969
821 { 970 {
822 dSP; 971 dSP;
823 LOGOP myop; 972 UNOP myop;
824 973
825 Zero (&myop, 1, LOGOP); 974 Zero (&myop, 1, UNOP);
826 myop.op_next = Nullop; 975 myop.op_next = Nullop;
976 myop.op_type = OP_ENTERSUB;
827 myop.op_flags = OPf_WANT_VOID; 977 myop.op_flags = OPf_WANT_VOID;
828 978
829 PUSHMARK (SP); 979 PUSHMARK (SP);
830 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 980 PUSHs ((SV *)coro->startcv);
831 PUTBACK; 981 PUTBACK;
832 PL_op = (OP *)&myop; 982 PL_op = (OP *)&myop;
833 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 983 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
834 SPAGAIN;
835 } 984 }
836 985
837 /* this newly created coroutine might be run on an existing cctx which most 986 /* this newly created coroutine might be run on an existing cctx which most
838 * likely was suspended in set_stacklevel, called from entersub. 987 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
839 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
840 * so we ENTER here for symmetry
841 */ 988 */
842 ENTER; 989 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
843} 990 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
844 991
992 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
993 coro_setup_op.op_next = PL_op;
994 coro_setup_op.op_type = OP_ENTERSUB;
995 coro_setup_op.op_ppaddr = pp_slf;
996 /* no flags etc. required, as an init function won't be called */
997
998 PL_op = (OP *)&coro_setup_op;
999
1000 /* copy throw, in case it was set before coro_setup */
1001 CORO_THROW = coro->except;
1002
1003 if (expect_false (enable_times))
1004 {
1005 coro_times_update ();
1006 coro_times_sub (coro);
1007 }
1008}
1009
845static void 1010static void
846coro_destroy (pTHX_ struct coro *coro) 1011coro_unwind_stacks (pTHX)
847{ 1012{
848 if (!IN_DESTRUCT) 1013 if (!IN_DESTRUCT)
849 { 1014 {
850 /* restore all saved variables and stuff */ 1015 /* restore all saved variables and stuff */
851 LEAVE_SCOPE (0); 1016 LEAVE_SCOPE (0);
… …
859 POPSTACK_TO (PL_mainstack); 1024 POPSTACK_TO (PL_mainstack);
860 1025
861 /* unwind main stack */ 1026 /* unwind main stack */
862 dounwind (-1); 1027 dounwind (-1);
863 } 1028 }
1029}
864 1030
865 SvREFCNT_dec (GvSV (PL_defgv)); 1031static void
866 SvREFCNT_dec (GvAV (PL_defgv)); 1032coro_destruct_perl (pTHX_ struct coro *coro)
867 SvREFCNT_dec (GvSV (PL_errgv)); 1033{
868 SvREFCNT_dec (PL_defoutgv); 1034 SV *svf [9];
869 SvREFCNT_dec (PL_rs);
870 SvREFCNT_dec (GvSV (irsgv));
871 1035
872 SvREFCNT_dec (PL_diehook);
873 SvREFCNT_dec (PL_warnhook);
874 1036 {
1037 struct coro *current = SvSTATE_current;
1038
1039 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1040
1041 save_perl (aTHX_ current);
1042 load_perl (aTHX_ coro);
1043
1044 coro_unwind_stacks (aTHX);
1045 coro_destruct_stacks (aTHX);
1046
1047 // now save some sv's to be free'd later
1048 svf [0] = GvSV (PL_defgv);
1049 svf [1] = (SV *)GvAV (PL_defgv);
1050 svf [2] = GvSV (PL_errgv);
1051 svf [3] = (SV *)PL_defoutgv;
1052 svf [4] = PL_rs;
1053 svf [5] = GvSV (irsgv);
1054 svf [6] = (SV *)GvHV (PL_hintgv);
1055 svf [7] = PL_diehook;
1056 svf [8] = PL_warnhook;
1057 assert (9 == sizeof (svf) / sizeof (*svf));
1058
1059 load_perl (aTHX_ current);
1060 }
1061
1062 {
1063 unsigned int i;
1064
1065 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1066 SvREFCNT_dec (svf [i]);
1067
875 SvREFCNT_dec (coro->saved_deffh); 1068 SvREFCNT_dec (coro->saved_deffh);
876 SvREFCNT_dec (coro->throw); 1069 SvREFCNT_dec (coro->rouse_cb);
877 1070 SvREFCNT_dec (coro->invoke_cb);
878 coro_destroy_stacks (aTHX); 1071 SvREFCNT_dec (coro->invoke_av);
1072 }
879} 1073}
880 1074
881static void 1075INLINE void
882free_coro_mortal (pTHX) 1076free_coro_mortal (pTHX)
883{ 1077{
884 if (expect_true (coro_mortal)) 1078 if (expect_true (coro_mortal))
885 { 1079 {
886 SvREFCNT_dec (coro_mortal); 1080 SvREFCNT_dec (coro_mortal);
… …
891static int 1085static int
892runops_trace (pTHX) 1086runops_trace (pTHX)
893{ 1087{
894 COP *oldcop = 0; 1088 COP *oldcop = 0;
895 int oldcxix = -2; 1089 int oldcxix = -2;
896 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
897 coro_cctx *cctx = coro->cctx;
898 1090
899 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1091 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
900 { 1092 {
901 PERL_ASYNC_CHECK (); 1093 PERL_ASYNC_CHECK ();
902 1094
903 if (cctx->flags & CC_TRACE_ALL) 1095 if (cctx_current->flags & CC_TRACE_ALL)
904 { 1096 {
905 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1097 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
906 { 1098 {
907 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1099 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
908 SV **bot, **top; 1100 SV **bot, **top;
909 AV *av = newAV (); /* return values */ 1101 AV *av = newAV (); /* return values */
910 SV **cb; 1102 SV **cb;
… …
947 1139
948 if (PL_curcop != &PL_compiling) 1140 if (PL_curcop != &PL_compiling)
949 { 1141 {
950 SV **cb; 1142 SV **cb;
951 1143
952 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1144 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
953 { 1145 {
954 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1146 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
955 1147
956 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1148 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
957 { 1149 {
958 runops_proc_t old_runops = PL_runops;
959 dSP; 1150 dSP;
960 GV *gv = CvGV (cx->blk_sub.cv); 1151 GV *gv = CvGV (cx->blk_sub.cv);
961 SV *fullname = sv_2mortal (newSV (0)); 1152 SV *fullname = sv_2mortal (newSV (0));
962 1153
963 if (isGV (gv)) 1154 if (isGV (gv))
… …
968 SAVETMPS; 1159 SAVETMPS;
969 EXTEND (SP, 3); 1160 EXTEND (SP, 3);
970 PUSHMARK (SP); 1161 PUSHMARK (SP);
971 PUSHs (&PL_sv_yes); 1162 PUSHs (&PL_sv_yes);
972 PUSHs (fullname); 1163 PUSHs (fullname);
973 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1164 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
974 PUTBACK; 1165 PUTBACK;
975 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1166 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
976 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1167 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
977 SPAGAIN; 1168 SPAGAIN;
978 FREETMPS; 1169 FREETMPS;
… …
981 } 1172 }
982 1173
983 oldcxix = cxstack_ix; 1174 oldcxix = cxstack_ix;
984 } 1175 }
985 1176
986 if (cctx->flags & CC_TRACE_LINE) 1177 if (cctx_current->flags & CC_TRACE_LINE)
987 { 1178 {
988 dSP; 1179 dSP;
989 1180
990 PL_runops = RUNOPS_DEFAULT; 1181 PL_runops = RUNOPS_DEFAULT;
991 ENTER; 1182 ENTER;
… …
1010 1201
1011 TAINT_NOT; 1202 TAINT_NOT;
1012 return 0; 1203 return 0;
1013} 1204}
1014 1205
1015/* inject a fake call to Coro::State::_cctx_init into the execution */ 1206static struct CoroSLF cctx_ssl_frame;
1016/* _cctx_init should be careful, as it could be called at almost any time */ 1207
1017/* during execution of a perl program */ 1208static void
1209slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1210{
1211 ta->prev = 0;
1212}
1213
1214static int
1215slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1216{
1217 *frame = cctx_ssl_frame;
1218
1219 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1220}
1221
1222/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1018static void NOINLINE 1223static void NOINLINE
1019cctx_prepare (pTHX_ coro_cctx *cctx) 1224cctx_prepare (pTHX)
1020{ 1225{
1021 dSP;
1022 LOGOP myop;
1023
1024 PL_top_env = &PL_start_env; 1226 PL_top_env = &PL_start_env;
1025 1227
1026 if (cctx->flags & CC_TRACE) 1228 if (cctx_current->flags & CC_TRACE)
1027 PL_runops = runops_trace; 1229 PL_runops = runops_trace;
1028 1230
1029 Zero (&myop, 1, LOGOP); 1231 /* we already must be executing an SLF op, there is no other valid way
1030 myop.op_next = PL_op; 1232 * that can lead to creation of a new cctx */
1031 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1233 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1234 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1032 1235
1033 PUSHMARK (SP); 1236 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1034 EXTEND (SP, 2); 1237 cctx_ssl_frame = slf_frame;
1035 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1238
1036 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1239 slf_frame.prepare = slf_prepare_set_stacklevel;
1037 PUTBACK; 1240 slf_frame.check = slf_check_set_stacklevel;
1038 PL_op = (OP *)&myop; 1241}
1039 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1242
1040 SPAGAIN; 1243/* the tail of transfer: execute stuff we can only do after a transfer */
1244INLINE void
1245transfer_tail (pTHX)
1246{
1247 free_coro_mortal (aTHX);
1041} 1248}
1042 1249
1043/* 1250/*
1044 * this is a _very_ stripped down perl interpreter ;) 1251 * this is a _very_ stripped down perl interpreter ;)
1045 */ 1252 */
1046static void 1253static void
1047cctx_run (void *arg) 1254cctx_run (void *arg)
1048{ 1255{
1256#ifdef USE_ITHREADS
1257# if CORO_PTHREAD
1258 PERL_SET_CONTEXT (coro_thx);
1259# endif
1260#endif
1261 {
1049 dTHX; 1262 dTHX;
1050 1263
1051 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1264 /* normally we would need to skip the entersub here */
1052 UNLOCK; 1265 /* not doing so will re-execute it, which is exactly what we want */
1053
1054 /* we now skip the entersub that lead to transfer() */
1055 PL_op = PL_op->op_next; 1266 /* PL_nop = PL_nop->op_next */
1056 1267
1057 /* inject a fake subroutine call to cctx_init */ 1268 /* inject a fake subroutine call to cctx_init */
1058 cctx_prepare (aTHX_ (coro_cctx *)arg); 1269 cctx_prepare (aTHX);
1059 1270
1271 /* cctx_run is the alternative tail of transfer() */
1272 transfer_tail (aTHX);
1273
1060 /* somebody or something will hit me for both perl_run and PL_restartop */ 1274 /* somebody or something will hit me for both perl_run and PL_restartop */
1061 PL_restartop = PL_op; 1275 PL_restartop = PL_op;
1062 perl_run (PL_curinterp); 1276 perl_run (PL_curinterp);
1063
1064 /* 1277 /*
1278 * Unfortunately, there is no way to get at the return values of the
1279 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1280 * runtime errors here, as this is just a random interpreter, not a thread.
1281 */
1282
1283 /*
1065 * 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
1066 * 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)
1067 * 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
1068 * bootstrap-time "top" top_env, as we cannot restore the "main" 1287 * bootstrap-time "top" top_env, as we cannot restore the "main"
1069 * 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.
1070 */ 1291 */
1071 PL_top_env = main_top_env; 1292 PL_top_env = main_top_env;
1072 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 }
1073} 1295}
1074 1296
1075static coro_cctx * 1297static coro_cctx *
1076cctx_new () 1298cctx_new ()
1077{ 1299{
1078 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 ();
1079 void *stack_start; 1329 void *stack_start;
1080 size_t stack_size; 1330 size_t stack_size;
1081 1331
1082 ++cctx_count;
1083
1084 Newz (0, cctx, 1, coro_cctx);
1085
1086#if HAVE_MMAP 1332#if HAVE_MMAP
1087 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;
1088 /* mmap supposedly does allocate-on-write for us */ 1334 /* mmap supposedly does allocate-on-write for us */
1089 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);
1090 1336
1091 if (cctx->sptr != (void *)-1) 1337 if (cctx->sptr != (void *)-1)
1092 { 1338 {
1093# if CORO_STACKGUARD 1339 #if CORO_STACKGUARD
1094 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1340 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1095# endif 1341 #endif
1096 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1342 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1097 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1343 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1098 cctx->flags |= CC_MAPPED; 1344 cctx->flags |= CC_MAPPED;
1099 } 1345 }
1100 else 1346 else
1101#endif 1347#endif
1102 { 1348 {
1103 cctx->ssize = coro_stacksize * (long)sizeof (long); 1349 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1104 New (0, cctx->sptr, coro_stacksize, long); 1350 New (0, cctx->sptr, cctx_stacksize, long);
1105 1351
1106 if (!cctx->sptr) 1352 if (!cctx->sptr)
1107 { 1353 {
1108 perror ("FATAL: unable to allocate stack for coroutine"); 1354 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1109 _exit (EXIT_FAILURE); 1355 _exit (EXIT_FAILURE);
1110 } 1356 }
1111 1357
1112 stack_start = cctx->sptr; 1358 stack_start = cctx->sptr;
1113 stack_size = cctx->ssize; 1359 stack_size = cctx->ssize;
1114 } 1360 }
1115 1361
1116 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
1117 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);
1118 1367
1119 return cctx; 1368 return cctx;
1120} 1369}
1121 1370
… …
1123cctx_destroy (coro_cctx *cctx) 1372cctx_destroy (coro_cctx *cctx)
1124{ 1373{
1125 if (!cctx) 1374 if (!cctx)
1126 return; 1375 return;
1127 1376
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1378
1128 --cctx_count; 1379 --cctx_count;
1380 coro_destroy (&cctx->cctx);
1129 1381
1382 /* coro_transfer creates new, empty cctx's */
1383 if (cctx->sptr)
1384 {
1130#if CORO_USE_VALGRIND 1385 #if CORO_USE_VALGRIND
1131 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
1132#endif 1393#endif
1133
1134#if HAVE_MMAP
1135 if (cctx->flags & CC_MAPPED)
1136 munmap (cctx->sptr, cctx->ssize);
1137 else
1138#endif
1139 Safefree (cctx->sptr); 1394 Safefree (cctx->sptr);
1395 }
1140 1396
1141 Safefree (cctx); 1397 Safefree (cctx);
1142} 1398}
1143 1399
1144/* wether this cctx should be destructed */ 1400/* wether this cctx should be destructed */
1145#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))
1146 1402
1147static coro_cctx * 1403static coro_cctx *
1148cctx_get (pTHX) 1404cctx_get (pTHX)
1149{ 1405{
1150 while (expect_true (cctx_first)) 1406 while (expect_true (cctx_first))
… …
1157 return cctx; 1413 return cctx;
1158 1414
1159 cctx_destroy (cctx); 1415 cctx_destroy (cctx);
1160 } 1416 }
1161 1417
1162 return cctx_new (); 1418 return cctx_new_run ();
1163} 1419}
1164 1420
1165static void 1421static void
1166cctx_put (coro_cctx *cctx) 1422cctx_put (coro_cctx *cctx)
1167{ 1423{
1424 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1425
1168 /* free another cctx if overlimit */ 1426 /* free another cctx if overlimit */
1169 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1427 if (expect_false (cctx_idle >= cctx_max_idle))
1170 { 1428 {
1171 coro_cctx *first = cctx_first; 1429 coro_cctx *first = cctx_first;
1172 cctx_first = first->next; 1430 cctx_first = first->next;
1173 --cctx_idle; 1431 --cctx_idle;
1174 1432
… …
1183/** coroutine switching *****************************************************/ 1441/** coroutine switching *****************************************************/
1184 1442
1185static void 1443static void
1186transfer_check (pTHX_ struct coro *prev, struct coro *next) 1444transfer_check (pTHX_ struct coro *prev, struct coro *next)
1187{ 1445{
1446 /* TODO: throwing up here is considered harmful */
1447
1188 if (expect_true (prev != next)) 1448 if (expect_true (prev != next))
1189 { 1449 {
1190 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1450 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1191 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,");
1192 1452
1193 if (expect_false (next->flags & CF_RUNNING))
1194 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1195
1196 if (expect_false (next->flags & CF_DESTROYED)) 1453 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1197 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,");
1198 1455
1199#if !PERL_VERSION_ATLEAST (5,10,0) 1456#if !PERL_VERSION_ATLEAST (5,10,0)
1200 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1457 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1201 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,");
1202#endif 1459#endif
1203 } 1460 }
1204} 1461}
1205 1462
1206/* always use the TRANSFER macro */ 1463/* always use the TRANSFER macro */
1207static void NOINLINE 1464static void NOINLINE /* noinline so we have a fixed stackframe */
1208transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1209{ 1466{
1210 dSTACKLEVEL; 1467 dSTACKLEVEL;
1211 static volatile int has_throw;
1212 1468
1213 /* sometimes transfer is only called to set idle_sp */ 1469 /* sometimes transfer is only called to set idle_sp */
1214 if (expect_false (!next)) 1470 if (expect_false (!prev))
1215 { 1471 {
1216 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1472 cctx_current->idle_sp = STACKLEVEL;
1217 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 */
1218 } 1474 }
1219 else if (expect_true (prev != next)) 1475 else if (expect_true (prev != next))
1220 { 1476 {
1221 coro_cctx *prev__cctx; 1477 coro_cctx *cctx_prev;
1222 1478
1223 if (expect_false (prev->flags & CF_NEW)) 1479 if (expect_false (prev->flags & CF_NEW))
1224 { 1480 {
1225 /* create a new empty context */ 1481 /* create a new empty/source context */
1226 Newz (0, prev->cctx, 1, coro_cctx);
1227 prev->flags &= ~CF_NEW; 1482 prev->flags &= ~CF_NEW;
1228 prev->flags |= CF_RUNNING; 1483 prev->flags |= CF_RUNNING;
1229 } 1484 }
1230 1485
1231 prev->flags &= ~CF_RUNNING; 1486 prev->flags &= ~CF_RUNNING;
1232 next->flags |= CF_RUNNING; 1487 next->flags |= CF_RUNNING;
1233
1234 LOCK;
1235 1488
1236 /* first get rid of the old state */ 1489 /* first get rid of the old state */
1237 save_perl (aTHX_ prev); 1490 save_perl (aTHX_ prev);
1238 1491
1239 if (expect_false (next->flags & CF_NEW)) 1492 if (expect_false (next->flags & CF_NEW))
… …
1244 coro_setup (aTHX_ next); 1497 coro_setup (aTHX_ next);
1245 } 1498 }
1246 else 1499 else
1247 load_perl (aTHX_ next); 1500 load_perl (aTHX_ next);
1248 1501
1249 prev__cctx = prev->cctx;
1250
1251 /* possibly "free" the cctx */ 1502 /* possibly untie and reuse the cctx */
1252 if (expect_true ( 1503 if (expect_true (
1253 prev__cctx->idle_sp == STACKLEVEL 1504 cctx_current->idle_sp == STACKLEVEL
1254 && !(prev__cctx->flags & CC_TRACE) 1505 && !(cctx_current->flags & CC_TRACE)
1255 && !force_cctx 1506 && !force_cctx
1256 )) 1507 ))
1257 { 1508 {
1258 /* 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 */
1259 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));
1260 1511
1261 prev->cctx = 0;
1262
1263 /* 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. */
1264 /* 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 */
1265 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1514 if (expect_false (CCTX_EXPIRED (cctx_current)))
1266 if (!next->cctx) 1515 if (expect_true (!next->cctx))
1267 next->cctx = cctx_get (aTHX); 1516 next->cctx = cctx_get (aTHX);
1268 1517
1269 cctx_put (prev__cctx); 1518 cctx_put (cctx_current);
1270 } 1519 }
1520 else
1521 prev->cctx = cctx_current;
1271 1522
1272 ++next->usecount; 1523 ++next->usecount;
1273 1524
1274 if (expect_true (!next->cctx)) 1525 cctx_prev = cctx_current;
1275 next->cctx = cctx_get (aTHX); 1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1276 1527
1277 has_throw = !!next->throw; 1528 next->cctx = 0;
1278 1529
1279 if (expect_false (prev__cctx != next->cctx)) 1530 if (expect_false (cctx_prev != cctx_current))
1280 { 1531 {
1281 prev__cctx->top_env = PL_top_env; 1532 cctx_prev->top_env = PL_top_env;
1282 PL_top_env = next->cctx->top_env; 1533 PL_top_env = cctx_current->top_env;
1283 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1284 } 1535 }
1285 1536
1286 free_coro_mortal (aTHX); 1537 transfer_tail (aTHX);
1287 UNLOCK;
1288
1289 if (expect_false (has_throw))
1290 {
1291 struct coro *coro = SvSTATE (coro_current);
1292
1293 if (coro->throw)
1294 {
1295 SV *exception = coro->throw;
1296 coro->throw = 0;
1297 sv_setsv (ERRSV, exception);
1298 croak (0);
1299 }
1300 }
1301 } 1538 }
1302} 1539}
1303
1304struct transfer_args
1305{
1306 struct coro *prev, *next;
1307};
1308 1540
1309#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))
1310#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1542#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1311 1543
1312/** high level stuff ********************************************************/ 1544/** high level stuff ********************************************************/
… …
1314static int 1546static int
1315coro_state_destroy (pTHX_ struct coro *coro) 1547coro_state_destroy (pTHX_ struct coro *coro)
1316{ 1548{
1317 if (coro->flags & CF_DESTROYED) 1549 if (coro->flags & CF_DESTROYED)
1318 return 0; 1550 return 0;
1551
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro);
1319 1554
1320 coro->flags |= CF_DESTROYED; 1555 coro->flags |= CF_DESTROYED;
1321 1556
1322 if (coro->flags & CF_READY) 1557 if (coro->flags & CF_READY)
1323 { 1558 {
1324 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1559 /* reduce nready, as destroying a ready coro effectively unreadies it */
1325 /* alternative: look through all ready queues and remove the coro */ 1560 /* alternative: look through all ready queues and remove the coro */
1326 LOCK;
1327 --coro_nready; 1561 --coro_nready;
1328 UNLOCK;
1329 } 1562 }
1330 else 1563 else
1331 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 */
1332 1565
1333 if (coro->mainstack && coro->mainstack != main_mainstack) 1566 if (coro->mainstack
1334 { 1567 && coro->mainstack != main_mainstack
1335 struct coro temp; 1568 && coro->slot
1336 1569 && !PL_dirty)
1337 if (coro->flags & CF_RUNNING)
1338 croak ("FATAL: tried to destroy currently running coroutine");
1339
1340 save_perl (aTHX_ &temp);
1341 load_perl (aTHX_ coro);
1342
1343 coro_destroy (aTHX_ coro); 1570 coro_destruct_perl (aTHX_ coro);
1344
1345 load_perl (aTHX_ &temp);
1346
1347 coro->slot = 0;
1348 }
1349 1571
1350 cctx_destroy (coro->cctx); 1572 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv);
1351 SvREFCNT_dec (coro->args); 1574 SvREFCNT_dec (coro->args);
1575 SvREFCNT_dec (CORO_THROW);
1352 1576
1353 if (coro->next) coro->next->prev = coro->prev; 1577 if (coro->next) coro->next->prev = coro->prev;
1354 if (coro->prev) coro->prev->next = coro->next; 1578 if (coro->prev) coro->prev->next = coro->next;
1355 if (coro == coro_first) coro_first = coro->next; 1579 if (coro == coro_first) coro_first = coro->next;
1356 1580
… …
1394# define MGf_DUP 0 1618# define MGf_DUP 0
1395#endif 1619#endif
1396}; 1620};
1397 1621
1398static void 1622static void
1399prepare_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)
1400{ 1624{
1401 ta->prev = SvSTATE (prev_sv); 1625 ta->prev = SvSTATE (prev_sv);
1402 ta->next = SvSTATE (next_sv); 1626 ta->next = SvSTATE (next_sv);
1403 TRANSFER_CHECK (*ta); 1627 TRANSFER_CHECK (*ta);
1404} 1628}
1405 1629
1406static void 1630static void
1407api_transfer (SV *prev_sv, SV *next_sv) 1631api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1408{ 1632{
1409 dTHX;
1410 struct transfer_args ta; 1633 struct coro_transfer_args ta;
1411 1634
1412 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1635 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1413 TRANSFER (ta, 1); 1636 TRANSFER (ta, 1);
1414} 1637}
1415 1638
1416/** Coro ********************************************************************/ 1639/** Coro ********************************************************************/
1417 1640
1418static void 1641INLINE void
1419coro_enq (pTHX_ SV *coro_sv) 1642coro_enq (pTHX_ struct coro *coro)
1420{ 1643{
1421 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1422}
1423 1645
1424static 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 *
1425coro_deq (pTHX) 1654coro_deq (pTHX)
1426{ 1655{
1427 int prio; 1656 int prio;
1428 1657
1429 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1430 if (AvFILLp (coro_ready [prio]) >= 0) 1659 {
1431 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 }
1432 1669
1433 return 0; 1670 return 0;
1434} 1671}
1435 1672
1673static void
1674invoke_sv_ready_hook_helper (void)
1675{
1676 dTHX;
1677 dSP;
1678
1679 ENTER;
1680 SAVETMPS;
1681
1682 PUSHMARK (SP);
1683 PUTBACK;
1684 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1685
1686 FREETMPS;
1687 LEAVE;
1688}
1689
1436static int 1690static int
1437api_ready (SV *coro_sv) 1691api_ready (pTHX_ SV *coro_sv)
1438{ 1692{
1439 dTHX;
1440 struct coro *coro;
1441 SV *sv_hook;
1442 void (*xs_hook)(void);
1443
1444 if (SvROK (coro_sv))
1445 coro_sv = SvRV (coro_sv);
1446
1447 coro = SvSTATE (coro_sv); 1693 struct coro *coro = SvSTATE (coro_sv);
1448 1694
1449 if (coro->flags & CF_READY) 1695 if (coro->flags & CF_READY)
1450 return 0; 1696 return 0;
1451 1697
1452 coro->flags |= CF_READY; 1698 coro->flags |= CF_READY;
1453 1699
1454 LOCK; 1700 coro_enq (aTHX_ coro);
1455 1701
1456 sv_hook = coro_nready ? 0 : coro_readyhook; 1702 if (!coro_nready++)
1457 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1703 if (coroapi.readyhook)
1458 1704 coroapi.readyhook ();
1459 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1460 ++coro_nready;
1461
1462 UNLOCK;
1463
1464 if (sv_hook)
1465 {
1466 dSP;
1467
1468 ENTER;
1469 SAVETMPS;
1470
1471 PUSHMARK (SP);
1472 PUTBACK;
1473 call_sv (sv_hook, G_DISCARD);
1474 SPAGAIN;
1475
1476 FREETMPS;
1477 LEAVE;
1478 }
1479
1480 if (xs_hook)
1481 xs_hook ();
1482 1705
1483 return 1; 1706 return 1;
1484} 1707}
1485 1708
1486static int 1709static int
1487api_is_ready (SV *coro_sv) 1710api_is_ready (pTHX_ SV *coro_sv)
1488{ 1711{
1489 dTHX;
1490 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1712 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1491} 1713}
1492 1714
1493static void 1715/* expects to own a reference to next->hv */
1716INLINE void
1494prepare_schedule (pTHX_ struct transfer_args *ta) 1717prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1495{ 1718{
1496 SV *prev_sv, *next_sv;
1497
1498 for (;;)
1499 {
1500 LOCK;
1501 next_sv = coro_deq (aTHX);
1502
1503 /* nothing to schedule: call the idle handler */
1504 if (expect_false (!next_sv))
1505 {
1506 dSP;
1507 UNLOCK;
1508
1509 ENTER;
1510 SAVETMPS;
1511
1512 PUSHMARK (SP);
1513 PUTBACK;
1514 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1515 SPAGAIN;
1516
1517 FREETMPS;
1518 LEAVE;
1519 continue;
1520 }
1521
1522 ta->next = SvSTATE (next_sv);
1523
1524 /* cannot transfer to destroyed coros, skip and look for next */
1525 if (expect_false (ta->next->flags & CF_DESTROYED))
1526 {
1527 UNLOCK;
1528 SvREFCNT_dec (next_sv);
1529 /* coro_nready is already taken care of by destroy */
1530 continue;
1531 }
1532
1533 --coro_nready;
1534 UNLOCK;
1535 break;
1536 }
1537
1538 /* free this only after the transfer */
1539 prev_sv = SvRV (coro_current); 1719 SV *prev_sv = SvRV (coro_current);
1720
1540 ta->prev = SvSTATE (prev_sv); 1721 ta->prev = SvSTATE_hv (prev_sv);
1722 ta->next = next;
1723
1541 TRANSFER_CHECK (*ta); 1724 TRANSFER_CHECK (*ta);
1542 assert (ta->next->flags & CF_READY); 1725
1543 ta->next->flags &= ~CF_READY;
1544 SvRV_set (coro_current, next_sv); 1726 SvRV_set (coro_current, (SV *)next->hv);
1545 1727
1546 LOCK;
1547 free_coro_mortal (aTHX); 1728 free_coro_mortal (aTHX);
1548 coro_mortal = prev_sv; 1729 coro_mortal = prev_sv;
1549 UNLOCK;
1550} 1730}
1551 1731
1552static void 1732static void
1733prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1734{
1735 for (;;)
1736 {
1737 struct coro *next = coro_deq (aTHX);
1738
1739 if (expect_true (next))
1740 {
1741 /* cannot transfer to destroyed coros, skip and look for next */
1742 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1743 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1744 else
1745 {
1746 next->flags &= ~CF_READY;
1747 --coro_nready;
1748
1749 prepare_schedule_to (aTHX_ ta, next);
1750 break;
1751 }
1752 }
1753 else
1754 {
1755 /* nothing to schedule: call the idle handler */
1756 if (SvROK (sv_idle)
1757 && SvOBJECT (SvRV (sv_idle)))
1758 {
1759 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1760 api_ready (aTHX_ SvRV (sv_idle));
1761 --coro_nready;
1762 }
1763 else
1764 {
1765 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1766 dSP;
1767
1768 ENTER;
1769 SAVETMPS;
1770
1771 PUSHMARK (SP);
1772 PUTBACK;
1773 call_sv (sv_idle, G_VOID | G_DISCARD);
1774
1775 FREETMPS;
1776 LEAVE;
1777 }
1778 }
1779 }
1780}
1781
1782INLINE void
1553prepare_cede (pTHX_ struct transfer_args *ta) 1783prepare_cede (pTHX_ struct coro_transfer_args *ta)
1554{ 1784{
1555 api_ready (coro_current); 1785 api_ready (aTHX_ coro_current);
1556 prepare_schedule (aTHX_ ta); 1786 prepare_schedule (aTHX_ ta);
1557} 1787}
1558 1788
1789INLINE void
1790prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1791{
1792 SV *prev = SvRV (coro_current);
1793
1794 if (coro_nready)
1795 {
1796 prepare_schedule (aTHX_ ta);
1797 api_ready (aTHX_ prev);
1798 }
1799 else
1800 prepare_nop (aTHX_ ta);
1801}
1802
1803static void
1804api_schedule (pTHX)
1805{
1806 struct coro_transfer_args ta;
1807
1808 prepare_schedule (aTHX_ &ta);
1809 TRANSFER (ta, 1);
1810}
1811
1812static void
1813api_schedule_to (pTHX_ SV *coro_sv)
1814{
1815 struct coro_transfer_args ta;
1816 struct coro *next = SvSTATE (coro_sv);
1817
1818 SvREFCNT_inc_NN (coro_sv);
1819 prepare_schedule_to (aTHX_ &ta, next);
1820}
1821
1559static int 1822static int
1560prepare_cede_notself (pTHX_ struct transfer_args *ta) 1823api_cede (pTHX)
1561{ 1824{
1562 if (coro_nready) 1825 struct coro_transfer_args ta;
1563 { 1826
1564 SV *prev = SvRV (coro_current);
1565 prepare_schedule (aTHX_ ta); 1827 prepare_cede (aTHX_ &ta);
1566 api_ready (prev); 1828
1829 if (expect_true (ta.prev != ta.next))
1830 {
1831 TRANSFER (ta, 1);
1567 return 1; 1832 return 1;
1568 } 1833 }
1569 else 1834 else
1570 return 0; 1835 return 0;
1571} 1836}
1572 1837
1573static void
1574api_schedule (void)
1575{
1576 dTHX;
1577 struct transfer_args ta;
1578
1579 prepare_schedule (aTHX_ &ta);
1580 TRANSFER (ta, 1);
1581}
1582
1583static int 1838static int
1584api_cede (void) 1839api_cede_notself (pTHX)
1585{ 1840{
1586 dTHX; 1841 if (coro_nready)
1842 {
1587 struct transfer_args ta; 1843 struct coro_transfer_args ta;
1588 1844
1589 prepare_cede (aTHX_ &ta); 1845 prepare_cede_notself (aTHX_ &ta);
1590
1591 if (expect_true (ta.prev != ta.next))
1592 {
1593 TRANSFER (ta, 1); 1846 TRANSFER (ta, 1);
1594 return 1; 1847 return 1;
1595 } 1848 }
1596 else 1849 else
1597 return 0; 1850 return 0;
1598} 1851}
1599 1852
1600static int 1853static void
1601api_cede_notself (void)
1602{
1603 dTHX;
1604 struct transfer_args ta;
1605
1606 if (prepare_cede_notself (aTHX_ &ta))
1607 {
1608 TRANSFER (ta, 1);
1609 return 1;
1610 }
1611 else
1612 return 0;
1613}
1614
1615static void
1616api_trace (SV *coro_sv, int flags) 1854api_trace (pTHX_ SV *coro_sv, int flags)
1617{ 1855{
1618 dTHX;
1619 struct coro *coro = SvSTATE (coro_sv); 1856 struct coro *coro = SvSTATE (coro_sv);
1620 1857
1858 if (coro->flags & CF_RUNNING)
1859 croak ("cannot enable tracing on a running coroutine, caught");
1860
1621 if (flags & CC_TRACE) 1861 if (flags & CC_TRACE)
1622 { 1862 {
1623 if (!coro->cctx) 1863 if (!coro->cctx)
1624 coro->cctx = cctx_new (); 1864 coro->cctx = cctx_new_run ();
1625 else if (!(coro->cctx->flags & CC_TRACE)) 1865 else if (!(coro->cctx->flags & CC_TRACE))
1626 croak ("cannot enable tracing on coroutine with custom stack"); 1866 croak ("cannot enable tracing on coroutine with custom stack, caught");
1627 1867
1628 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1868 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1629 } 1869 }
1630 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1870 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1631 { 1871 {
… …
1636 else 1876 else
1637 coro->slot->runops = RUNOPS_DEFAULT; 1877 coro->slot->runops = RUNOPS_DEFAULT;
1638 } 1878 }
1639} 1879}
1640 1880
1881static void
1882coro_call_on_destroy (pTHX_ struct coro *coro)
1883{
1884 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1885 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1886
1887 if (on_destroyp)
1888 {
1889 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1890
1891 while (AvFILLp (on_destroy) >= 0)
1892 {
1893 dSP; /* don't disturb outer sp */
1894 SV *cb = av_pop (on_destroy);
1895
1896 PUSHMARK (SP);
1897
1898 if (statusp)
1899 {
1900 int i;
1901 AV *status = (AV *)SvRV (*statusp);
1902 EXTEND (SP, AvFILLp (status) + 1);
1903
1904 for (i = 0; i <= AvFILLp (status); ++i)
1905 PUSHs (AvARRAY (status)[i]);
1906 }
1907
1908 PUTBACK;
1909 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1910 }
1911 }
1912}
1913
1914static void
1915slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1916{
1917 int i;
1918 HV *hv = (HV *)SvRV (coro_current);
1919 AV *av = newAV ();
1920
1921 /* items are actually not so common, so optimise for this case */
1922 if (items)
1923 {
1924 av_extend (av, items - 1);
1925
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928 }
1929
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1931
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager);
1934
1935 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat;
1937
1938 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/
1941}
1942
1943/*****************************************************************************/
1944/* async pool handler */
1945
1641static int 1946static int
1642coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1947slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1643{ 1948{
1644 AV *padlist; 1949 HV *hv = (HV *)SvRV (coro_current);
1645 AV *av = (AV *)mg->mg_obj; 1950 struct coro *coro = (struct coro *)frame->data;
1646 1951
1647 abort (); 1952 if (!coro->invoke_cb)
1953 return 1; /* loop till we have invoke */
1954 else
1955 {
1956 hv_store (hv, "desc", sizeof ("desc") - 1,
1957 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1958
1959 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1960
1961 {
1962 dSP;
1963 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1964 PUTBACK;
1965 }
1966
1967 SvREFCNT_dec (GvAV (PL_defgv));
1968 GvAV (PL_defgv) = coro->invoke_av;
1969 coro->invoke_av = 0;
1970
1971 return 0;
1972 }
1973}
1974
1975static void
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{
1978 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980
1981 if (expect_true (coro->saved_deffh))
1982 {
1983 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0;
1986
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1991 coro->invoke_av = newAV ();
1992
1993 frame->prepare = prepare_nop;
1994 }
1995 else
1996 {
1997 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1999
2000 coro->prio = 0;
2001
2002 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2003 api_trace (aTHX_ coro_current, 0);
2004
2005 frame->prepare = prepare_schedule;
2006 av_push (av_async_pool, SvREFCNT_inc (hv));
2007 }
2008 }
2009 else
2010 {
2011 /* first iteration, simply fall through */
2012 frame->prepare = prepare_nop;
2013 }
2014
2015 frame->check = slf_check_pool_handler;
2016 frame->data = (void *)coro;
2017}
2018
2019/*****************************************************************************/
2020/* rouse callback */
2021
2022#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2023
2024static void
2025coro_rouse_callback (pTHX_ CV *cv)
2026{
2027 dXSARGS;
2028 SV *data = (SV *)S_GENSUB_ARG;
2029
2030 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2031 {
2032 /* first call, set args */
2033 SV *coro = SvRV (data);
2034 AV *av = newAV ();
2035
2036 SvRV_set (data, (SV *)av);
2037
2038 /* better take a full copy of the arguments */
2039 while (items--)
2040 av_store (av, items, newSVsv (ST (items)));
2041
2042 api_ready (aTHX_ coro);
2043 SvREFCNT_dec (coro);
2044 }
2045
2046 XSRETURN_EMPTY;
2047}
2048
2049static int
2050slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2051{
2052 SV *data = (SV *)frame->data;
2053
2054 if (CORO_THROW)
2055 return 0;
2056
2057 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2058 return 1;
2059
2060 /* now push all results on the stack */
2061 {
2062 dSP;
2063 AV *av = (AV *)SvRV (data);
2064 int i;
2065
2066 EXTEND (SP, AvFILLp (av) + 1);
2067 for (i = 0; i <= AvFILLp (av); ++i)
2068 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2069
2070 /* we have stolen the elements, so set length to zero and free */
2071 AvFILLp (av) = -1;
2072 av_undef (av);
2073
2074 PUTBACK;
2075 }
1648 2076
1649 return 0; 2077 return 0;
1650} 2078}
1651 2079
1652static MGVTBL coro_gensub_vtbl = { 2080static void
1653 0, 0, 0, 0, 2081slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1654 coro_gensub_free 2082{
1655}; 2083 SV *cb;
2084
2085 if (items)
2086 cb = arg [0];
2087 else
2088 {
2089 struct coro *coro = SvSTATE_current;
2090
2091 if (!coro->rouse_cb)
2092 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2093
2094 cb = sv_2mortal (coro->rouse_cb);
2095 coro->rouse_cb = 0;
2096 }
2097
2098 if (!SvROK (cb)
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,");
2102
2103 {
2104 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2105 SV *data = (SV *)S_GENSUB_ARG;
2106
2107 frame->data = (void *)data;
2108 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2109 frame->check = slf_check_rouse_wait;
2110 }
2111}
2112
2113static SV *
2114coro_new_rouse_cb (pTHX)
2115{
2116 HV *hv = (HV *)SvRV (coro_current);
2117 struct coro *coro = SvSTATE_hv (hv);
2118 SV *data = newRV_inc ((SV *)hv);
2119 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2120
2121 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2122 SvREFCNT_dec (data); /* magicext increases the refcount */
2123
2124 SvREFCNT_dec (coro->rouse_cb);
2125 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2126
2127 return cb;
2128}
2129
2130/*****************************************************************************/
2131/* schedule-like-function opcode (SLF) */
2132
2133static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2134static const CV *slf_cv;
2135static SV **slf_argv;
2136static int slf_argc, slf_arga; /* count, allocated */
2137static I32 slf_ax; /* top of stack, for restore */
2138
2139/* this restores the stack in the case we patched the entersub, to */
2140/* recreate the stack frame as perl will on following calls */
2141/* since entersub cleared the stack */
2142static OP *
2143pp_restore (pTHX)
2144{
2145 int i;
2146 SV **SP = PL_stack_base + slf_ax;
2147
2148 PUSHMARK (SP);
2149
2150 EXTEND (SP, slf_argc + 1);
2151
2152 for (i = 0; i < slf_argc; ++i)
2153 PUSHs (sv_2mortal (slf_argv [i]));
2154
2155 PUSHs ((SV *)CvGV (slf_cv));
2156
2157 RETURNOP (slf_restore.op_first);
2158}
2159
2160static void
2161slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2162{
2163 SV **arg = (SV **)slf_frame.data;
2164
2165 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2166}
2167
2168static void
2169slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2170{
2171 if (items != 2)
2172 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2173
2174 frame->prepare = slf_prepare_transfer;
2175 frame->check = slf_check_nop;
2176 frame->data = (void *)arg; /* let's hope it will stay valid */
2177}
2178
2179static void
2180slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2181{
2182 frame->prepare = prepare_schedule;
2183 frame->check = slf_check_nop;
2184}
2185
2186static void
2187slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2188{
2189 struct coro *next = (struct coro *)slf_frame.data;
2190
2191 SvREFCNT_inc_NN (next->hv);
2192 prepare_schedule_to (aTHX_ ta, next);
2193}
2194
2195static void
2196slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 if (!items)
2199 croak ("Coro::schedule_to expects a coroutine argument, caught");
2200
2201 frame->data = (void *)SvSTATE (arg [0]);
2202 frame->prepare = slf_prepare_schedule_to;
2203 frame->check = slf_check_nop;
2204}
2205
2206static void
2207slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2208{
2209 api_ready (aTHX_ SvRV (coro_current));
2210
2211 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2212}
2213
2214static void
2215slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 frame->prepare = prepare_cede;
2218 frame->check = slf_check_nop;
2219}
2220
2221static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{
2224 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop;
2226}
2227
2228/*
2229 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same
2231 * stack offset
2232 * SLF stands for "schedule-like-function".
2233 */
2234static OP *
2235pp_slf (pTHX)
2236{
2237 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238
2239 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare))
2243 {
2244 /* first iteration */
2245 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */
2248 SV *gv = *sp;
2249
2250 /* do a quick consistency check on the "function" object, and if it isn't */
2251 /* for us, divert to the real entersub */
2252 if (SvTYPE (gv) != SVt_PVGV
2253 || !GvCV (gv)
2254 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2255 return PL_ppaddr[OP_ENTERSUB](aTHX);
2256
2257 if (!(PL_op->op_flags & OPf_STACKED))
2258 {
2259 /* ampersand-form of call, use @_ instead of stack */
2260 AV *av = GvAV (PL_defgv);
2261 arg = AvARRAY (av);
2262 items = AvFILLp (av) + 1;
2263 }
2264
2265 /* now call the init function, which needs to set up slf_frame */
2266 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2267 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2268
2269 /* pop args */
2270 SP = PL_stack_base + POPMARK;
2271
2272 PUTBACK;
2273 }
2274
2275 /* now that we have a slf_frame, interpret it! */
2276 /* we use a callback system not to make the code needlessly */
2277 /* complicated, but so we can run multiple perl coros from one cctx */
2278
2279 do
2280 {
2281 struct coro_transfer_args ta;
2282
2283 slf_frame.prepare (aTHX_ &ta);
2284 TRANSFER (ta, 0);
2285
2286 checkmark = PL_stack_sp - PL_stack_base;
2287 }
2288 while (slf_frame.check (aTHX_ &slf_frame));
2289
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291
2292 /* exception handling */
2293 if (expect_false (CORO_THROW))
2294 {
2295 SV *exception = sv_2mortal (CORO_THROW);
2296
2297 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception);
2299 croak (0);
2300 }
2301
2302 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR)
2305 {
2306 dSP;
2307 SV **bot = PL_stack_base + checkmark;
2308
2309 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */
2312 bot [1] = *sp;
2313
2314 SP = bot + 1;
2315
2316 PUTBACK;
2317 }
2318
2319 return NORMAL;
2320}
2321
2322static void
2323api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2324{
2325 int i;
2326 SV **arg = PL_stack_base + ax;
2327 int items = PL_stack_sp - arg + 1;
2328
2329 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2330
2331 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2332 && PL_op->op_ppaddr != pp_slf)
2333 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2334
2335 CvFLAGS (cv) |= CVf_SLF;
2336 CvNODEBUG_on (cv);
2337 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2338 slf_cv = cv;
2339
2340 /* we patch the op, and then re-run the whole call */
2341 /* we have to put the same argument on the stack for this to work */
2342 /* and this will be done by pp_restore */
2343 slf_restore.op_next = (OP *)&slf_restore;
2344 slf_restore.op_type = OP_CUSTOM;
2345 slf_restore.op_ppaddr = pp_restore;
2346 slf_restore.op_first = PL_op;
2347
2348 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2349
2350 if (PL_op->op_flags & OPf_STACKED)
2351 {
2352 if (items > slf_arga)
2353 {
2354 slf_arga = items;
2355 free (slf_argv);
2356 slf_argv = malloc (slf_arga * sizeof (SV *));
2357 }
2358
2359 slf_argc = items;
2360
2361 for (i = 0; i < items; ++i)
2362 slf_argv [i] = SvREFCNT_inc (arg [i]);
2363 }
2364 else
2365 slf_argc = 0;
2366
2367 PL_op->op_ppaddr = pp_slf;
2368 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2369
2370 PL_op = (OP *)&slf_restore;
2371}
2372
2373/*****************************************************************************/
2374/* dynamic wind */
2375
2376static void
2377on_enterleave_call (pTHX_ SV *cb)
2378{
2379 dSP;
2380
2381 PUSHSTACK;
2382
2383 PUSHMARK (SP);
2384 PUTBACK;
2385 call_sv (cb, G_VOID | G_DISCARD);
2386 SPAGAIN;
2387
2388 POPSTACK;
2389}
2390
2391static SV *
2392coro_avp_pop_and_free (pTHX_ AV **avp)
2393{
2394 AV *av = *avp;
2395 SV *res = av_pop (av);
2396
2397 if (AvFILLp (av) < 0)
2398 {
2399 *avp = 0;
2400 SvREFCNT_dec (av);
2401 }
2402
2403 return res;
2404}
2405
2406static void
2407coro_pop_on_enter (pTHX_ void *coro)
2408{
2409 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2410 SvREFCNT_dec (cb);
2411}
2412
2413static void
2414coro_pop_on_leave (pTHX_ void *coro)
2415{
2416 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2417 on_enterleave_call (aTHX_ sv_2mortal (cb));
2418}
1656 2419
1657/*****************************************************************************/ 2420/*****************************************************************************/
1658/* PerlIO::cede */ 2421/* PerlIO::cede */
1659 2422
1660typedef struct 2423typedef struct
… …
1688 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2451 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1689 double now = nvtime (); 2452 double now = nvtime ();
1690 2453
1691 if (now >= self->next) 2454 if (now >= self->next)
1692 { 2455 {
1693 api_cede (); 2456 api_cede (aTHX);
1694 self->next = now + self->every; 2457 self->next = now + self->every;
1695 } 2458 }
1696 2459
1697 return PerlIOBuf_flush (aTHX_ f); 2460 return PerlIOBuf_flush (aTHX_ f);
1698} 2461}
… …
1727 PerlIOBuf_get_ptr, 2490 PerlIOBuf_get_ptr,
1728 PerlIOBuf_get_cnt, 2491 PerlIOBuf_get_cnt,
1729 PerlIOBuf_set_ptrcnt, 2492 PerlIOBuf_set_ptrcnt,
1730}; 2493};
1731 2494
2495/*****************************************************************************/
2496/* Coro::Semaphore & Coro::Signal */
2497
2498static SV *
2499coro_waitarray_new (pTHX_ int count)
2500{
2501 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2502 AV *av = newAV ();
2503 SV **ary;
2504
2505 /* unfortunately, building manually saves memory */
2506 Newx (ary, 2, SV *);
2507 AvALLOC (av) = ary;
2508#if PERL_VERSION_ATLEAST (5,10,0)
2509 AvARRAY (av) = ary;
2510#else
2511 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2512 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2513 SvPVX ((SV *)av) = (char *)ary;
2514#endif
2515 AvMAX (av) = 1;
2516 AvFILLp (av) = 0;
2517 ary [0] = newSViv (count);
2518
2519 return newRV_noinc ((SV *)av);
2520}
2521
2522/* semaphore */
2523
2524static void
2525coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2526{
2527 SV *count_sv = AvARRAY (av)[0];
2528 IV count = SvIVX (count_sv);
2529
2530 count += adjust;
2531 SvIVX (count_sv) = count;
2532
2533 /* now wake up as many waiters as are expected to lock */
2534 while (count > 0 && AvFILLp (av) > 0)
2535 {
2536 SV *cb;
2537
2538 /* swap first two elements so we can shift a waiter */
2539 AvARRAY (av)[0] = AvARRAY (av)[1];
2540 AvARRAY (av)[1] = count_sv;
2541 cb = av_shift (av);
2542
2543 if (SvOBJECT (cb))
2544 {
2545 api_ready (aTHX_ cb);
2546 --count;
2547 }
2548 else if (SvTYPE (cb) == SVt_PVCV)
2549 {
2550 dSP;
2551 PUSHMARK (SP);
2552 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2553 PUTBACK;
2554 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2555 }
2556
2557 SvREFCNT_dec (cb);
2558 }
2559}
2560
2561static void
2562coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2563{
2564 /* call $sem->adjust (0) to possibly wake up some other waiters */
2565 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2566}
2567
2568static int
2569slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2570{
2571 AV *av = (AV *)frame->data;
2572 SV *count_sv = AvARRAY (av)[0];
2573
2574 /* if we are about to throw, don't actually acquire the lock, just throw */
2575 if (CORO_THROW)
2576 return 0;
2577 else if (SvIVX (count_sv) > 0)
2578 {
2579 SvSTATE_current->on_destroy = 0;
2580
2581 if (acquire)
2582 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2583 else
2584 coro_semaphore_adjust (aTHX_ av, 0);
2585
2586 return 0;
2587 }
2588 else
2589 {
2590 int i;
2591 /* if we were woken up but can't down, we look through the whole */
2592 /* waiters list and only add us if we aren't in there already */
2593 /* this avoids some degenerate memory usage cases */
2594
2595 for (i = 1; i <= AvFILLp (av); ++i)
2596 if (AvARRAY (av)[i] == SvRV (coro_current))
2597 return 1;
2598
2599 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2600 return 1;
2601 }
2602}
2603
2604static int
2605slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2606{
2607 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2608}
2609
2610static int
2611slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2612{
2613 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2614}
2615
2616static void
2617slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2618{
2619 AV *av = (AV *)SvRV (arg [0]);
2620
2621 if (SvIVX (AvARRAY (av)[0]) > 0)
2622 {
2623 frame->data = (void *)av;
2624 frame->prepare = prepare_nop;
2625 }
2626 else
2627 {
2628 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2629
2630 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2631 frame->prepare = prepare_schedule;
2632
2633 /* to avoid race conditions when a woken-up coro gets terminated */
2634 /* we arrange for a temporary on_destroy that calls adjust (0) */
2635 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2636 }
2637}
2638
2639static void
2640slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2641{
2642 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2643 frame->check = slf_check_semaphore_down;
2644}
2645
2646static void
2647slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2648{
2649 if (items >= 2)
2650 {
2651 /* callback form */
2652 AV *av = (AV *)SvRV (arg [0]);
2653 SV *cb_cv = s_get_cv_croak (arg [1]);
2654
2655 av_push (av, SvREFCNT_inc_NN (cb_cv));
2656
2657 if (SvIVX (AvARRAY (av)[0]) > 0)
2658 coro_semaphore_adjust (aTHX_ av, 0);
2659
2660 frame->prepare = prepare_nop;
2661 frame->check = slf_check_nop;
2662 }
2663 else
2664 {
2665 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2666 frame->check = slf_check_semaphore_wait;
2667 }
2668}
2669
2670/* signal */
2671
2672static void
2673coro_signal_wake (pTHX_ AV *av, int count)
2674{
2675 SvIVX (AvARRAY (av)[0]) = 0;
2676
2677 /* now signal count waiters */
2678 while (count > 0 && AvFILLp (av) > 0)
2679 {
2680 SV *cb;
2681
2682 /* swap first two elements so we can shift a waiter */
2683 cb = AvARRAY (av)[0];
2684 AvARRAY (av)[0] = AvARRAY (av)[1];
2685 AvARRAY (av)[1] = cb;
2686
2687 cb = av_shift (av);
2688
2689 if (SvTYPE (cb) == SVt_PVCV)
2690 {
2691 dSP;
2692 PUSHMARK (SP);
2693 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2694 PUTBACK;
2695 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2696 }
2697 else
2698 {
2699 api_ready (aTHX_ cb);
2700 sv_setiv (cb, 0); /* signal waiter */
2701 }
2702
2703 SvREFCNT_dec (cb);
2704
2705 --count;
2706 }
2707}
2708
2709static int
2710slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2711{
2712 /* if we are about to throw, also stop waiting */
2713 return SvROK ((SV *)frame->data) && !CORO_THROW;
2714}
2715
2716static void
2717slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2718{
2719 AV *av = (AV *)SvRV (arg [0]);
2720
2721 if (items >= 2)
2722 {
2723 SV *cb_cv = s_get_cv_croak (arg [1]);
2724 av_push (av, SvREFCNT_inc_NN (cb_cv));
2725
2726 if (SvIVX (AvARRAY (av)[0]))
2727 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2728
2729 frame->prepare = prepare_nop;
2730 frame->check = slf_check_nop;
2731 }
2732 else if (SvIVX (AvARRAY (av)[0]))
2733 {
2734 SvIVX (AvARRAY (av)[0]) = 0;
2735 frame->prepare = prepare_nop;
2736 frame->check = slf_check_nop;
2737 }
2738 else
2739 {
2740 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2741
2742 av_push (av, waiter);
2743
2744 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2745 frame->prepare = prepare_schedule;
2746 frame->check = slf_check_signal_wait;
2747 }
2748}
2749
2750/*****************************************************************************/
2751/* Coro::AIO */
2752
2753#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2754
2755/* helper storage struct */
2756struct io_state
2757{
2758 int errorno;
2759 I32 laststype; /* U16 in 5.10.0 */
2760 int laststatval;
2761 Stat_t statcache;
2762};
2763
2764static void
2765coro_aio_callback (pTHX_ CV *cv)
2766{
2767 dXSARGS;
2768 AV *state = (AV *)S_GENSUB_ARG;
2769 SV *coro = av_pop (state);
2770 SV *data_sv = newSV (sizeof (struct io_state));
2771
2772 av_extend (state, items - 1);
2773
2774 sv_upgrade (data_sv, SVt_PV);
2775 SvCUR_set (data_sv, sizeof (struct io_state));
2776 SvPOK_only (data_sv);
2777
2778 {
2779 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2780
2781 data->errorno = errno;
2782 data->laststype = PL_laststype;
2783 data->laststatval = PL_laststatval;
2784 data->statcache = PL_statcache;
2785 }
2786
2787 /* now build the result vector out of all the parameters and the data_sv */
2788 {
2789 int i;
2790
2791 for (i = 0; i < items; ++i)
2792 av_push (state, SvREFCNT_inc_NN (ST (i)));
2793 }
2794
2795 av_push (state, data_sv);
2796
2797 api_ready (aTHX_ coro);
2798 SvREFCNT_dec (coro);
2799 SvREFCNT_dec ((AV *)state);
2800}
2801
2802static int
2803slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2804{
2805 AV *state = (AV *)frame->data;
2806
2807 /* if we are about to throw, return early */
2808 /* this does not cancel the aio request, but at least */
2809 /* it quickly returns */
2810 if (CORO_THROW)
2811 return 0;
2812
2813 /* one element that is an RV? repeat! */
2814 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2815 return 1;
2816
2817 /* restore status */
2818 {
2819 SV *data_sv = av_pop (state);
2820 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2821
2822 errno = data->errorno;
2823 PL_laststype = data->laststype;
2824 PL_laststatval = data->laststatval;
2825 PL_statcache = data->statcache;
2826
2827 SvREFCNT_dec (data_sv);
2828 }
2829
2830 /* push result values */
2831 {
2832 dSP;
2833 int i;
2834
2835 EXTEND (SP, AvFILLp (state) + 1);
2836 for (i = 0; i <= AvFILLp (state); ++i)
2837 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2838
2839 PUTBACK;
2840 }
2841
2842 return 0;
2843}
2844
2845static void
2846slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2847{
2848 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2849 SV *coro_hv = SvRV (coro_current);
2850 struct coro *coro = SvSTATE_hv (coro_hv);
2851
2852 /* put our coroutine id on the state arg */
2853 av_push (state, SvREFCNT_inc_NN (coro_hv));
2854
2855 /* first see whether we have a non-zero priority and set it as AIO prio */
2856 if (coro->prio)
2857 {
2858 dSP;
2859
2860 static SV *prio_cv;
2861 static SV *prio_sv;
2862
2863 if (expect_false (!prio_cv))
2864 {
2865 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2866 prio_sv = newSViv (0);
2867 }
2868
2869 PUSHMARK (SP);
2870 sv_setiv (prio_sv, coro->prio);
2871 XPUSHs (prio_sv);
2872
2873 PUTBACK;
2874 call_sv (prio_cv, G_VOID | G_DISCARD);
2875 }
2876
2877 /* now call the original request */
2878 {
2879 dSP;
2880 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2881 int i;
2882
2883 PUSHMARK (SP);
2884
2885 /* first push all args to the stack */
2886 EXTEND (SP, items + 1);
2887
2888 for (i = 0; i < items; ++i)
2889 PUSHs (arg [i]);
2890
2891 /* now push the callback closure */
2892 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2893
2894 /* now call the AIO function - we assume our request is uncancelable */
2895 PUTBACK;
2896 call_sv ((SV *)req, G_VOID | G_DISCARD);
2897 }
2898
2899 /* now that the requets is going, we loop toll we have a result */
2900 frame->data = (void *)state;
2901 frame->prepare = prepare_schedule;
2902 frame->check = slf_check_aio_req;
2903}
2904
2905static void
2906coro_aio_req_xs (pTHX_ CV *cv)
2907{
2908 dXSARGS;
2909
2910 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2911
2912 XSRETURN_EMPTY;
2913}
2914
2915/*****************************************************************************/
2916
2917#if CORO_CLONE
2918# include "clone.c"
2919#endif
2920
2921/*****************************************************************************/
2922
2923static SV *
2924coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2925{
2926 SV *coro_sv;
2927 struct coro *coro;
2928 MAGIC *mg;
2929 HV *hv;
2930 SV *cb;
2931 int i;
2932
2933 if (argc > 0)
2934 {
2935 cb = s_get_cv_croak (argv [0]);
2936
2937 if (!is_coro)
2938 {
2939 if (CvISXSUB (cb))
2940 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2941
2942 if (!CvROOT (cb))
2943 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2944 }
2945 }
2946
2947 Newz (0, coro, 1, struct coro);
2948 coro->args = newAV ();
2949 coro->flags = CF_NEW;
2950
2951 if (coro_first) coro_first->prev = coro;
2952 coro->next = coro_first;
2953 coro_first = coro;
2954
2955 coro->hv = hv = newHV ();
2956 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2957 mg->mg_flags |= MGf_DUP;
2958 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
2959
2960 if (argc > 0)
2961 {
2962 av_extend (coro->args, argc + is_coro - 1);
2963
2964 if (is_coro)
2965 {
2966 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2967 cb = (SV *)cv_coro_run;
2968 }
2969
2970 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2971
2972 for (i = 1; i < argc; i++)
2973 av_push (coro->args, newSVsv (argv [i]));
2974 }
2975
2976 return coro_sv;
2977}
1732 2978
1733MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2979MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1734 2980
1735PROTOTYPES: DISABLE 2981PROTOTYPES: DISABLE
1736 2982
1737BOOT: 2983BOOT:
1738{ 2984{
1739#ifdef USE_ITHREADS 2985#ifdef USE_ITHREADS
1740 MUTEX_INIT (&coro_mutex); 2986# if CORO_PTHREAD
2987 coro_thx = PERL_GET_CONTEXT;
2988# endif
1741#endif 2989#endif
1742 BOOT_PAGESIZE; 2990 BOOT_PAGESIZE;
2991
2992 cctx_current = cctx_new_empty ();
1743 2993
1744 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2994 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1745 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2995 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1746 2996
1747 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2997 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1763 main_top_env = PL_top_env; 3013 main_top_env = PL_top_env;
1764 3014
1765 while (main_top_env->je_prev) 3015 while (main_top_env->je_prev)
1766 main_top_env = main_top_env->je_prev; 3016 main_top_env = main_top_env->je_prev;
1767 3017
3018 {
3019 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3020
3021 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3022 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3023
3024 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3025 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3026 }
3027
1768 coroapi.ver = CORO_API_VERSION; 3028 coroapi.ver = CORO_API_VERSION;
1769 coroapi.rev = CORO_API_REVISION; 3029 coroapi.rev = CORO_API_REVISION;
3030
1770 coroapi.transfer = api_transfer; 3031 coroapi.transfer = api_transfer;
3032
3033 coroapi.sv_state = SvSTATE_;
3034 coroapi.execute_slf = api_execute_slf;
3035 coroapi.prepare_nop = prepare_nop;
3036 coroapi.prepare_schedule = prepare_schedule;
3037 coroapi.prepare_cede = prepare_cede;
3038 coroapi.prepare_cede_notself = prepare_cede_notself;
1771 3039
1772 { 3040 {
1773 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3041 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1774 3042
1775 if (!svp) croak ("Time::HiRes is required"); 3043 if (!svp) croak ("Time::HiRes is required");
1776 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3044 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1777 3045
1778 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3046 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3047
3048 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3049 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
1779 } 3050 }
1780 3051
1781 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3052 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1782} 3053}
1783 3054
1784SV * 3055SV *
1785new (char *klass, ...) 3056new (SV *klass, ...)
3057 ALIAS:
3058 Coro::new = 1
1786 CODE: 3059 CODE:
1787{ 3060 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1788 struct coro *coro; 3061 OUTPUT:
1789 MAGIC *mg;
1790 HV *hv;
1791 int i;
1792
1793 Newz (0, coro, 1, struct coro);
1794 coro->args = newAV ();
1795 coro->flags = CF_NEW;
1796
1797 if (coro_first) coro_first->prev = coro;
1798 coro->next = coro_first;
1799 coro_first = coro;
1800
1801 coro->hv = hv = newHV ();
1802 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1803 mg->mg_flags |= MGf_DUP;
1804 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1805
1806 av_extend (coro->args, items - 1);
1807 for (i = 1; i < items; i++)
1808 av_push (coro->args, newSVsv (ST (i)));
1809}
1810 OUTPUT:
1811 RETVAL 3062 RETVAL
1812 3063
1813# these not obviously related functions are all rolled into the same xs
1814# function to increase chances that they all will call transfer with the same
1815# stack offset
1816void 3064void
1817_set_stacklevel (...) 3065transfer (...)
1818 ALIAS: 3066 PROTOTYPE: $$
1819 Coro::State::transfer = 1 3067 CODE:
1820 Coro::schedule = 2 3068 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1821 Coro::cede = 3
1822 Coro::cede_notself = 4
1823 CODE:
1824{
1825 struct transfer_args ta;
1826
1827 PUTBACK;
1828 switch (ix)
1829 {
1830 case 0:
1831 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1832 ta.next = 0;
1833 break;
1834
1835 case 1:
1836 if (items != 2)
1837 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1838
1839 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1840 break;
1841
1842 case 2:
1843 prepare_schedule (aTHX_ &ta);
1844 break;
1845
1846 case 3:
1847 prepare_cede (aTHX_ &ta);
1848 break;
1849
1850 case 4:
1851 if (!prepare_cede_notself (aTHX_ &ta))
1852 XSRETURN_EMPTY;
1853
1854 break;
1855 }
1856 SPAGAIN;
1857
1858 BARRIER;
1859 PUTBACK;
1860 TRANSFER (ta, 0);
1861 SPAGAIN; /* might be the sp of a different coroutine now */
1862 /* be extra careful not to ever do anything after TRANSFER */
1863}
1864 3069
1865bool 3070bool
1866_destroy (SV *coro_sv) 3071_destroy (SV *coro_sv)
1867 CODE: 3072 CODE:
1868 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3073 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1873_exit (int code) 3078_exit (int code)
1874 PROTOTYPE: $ 3079 PROTOTYPE: $
1875 CODE: 3080 CODE:
1876 _exit (code); 3081 _exit (code);
1877 3082
3083SV *
3084clone (Coro::State coro)
3085 CODE:
3086{
3087#if CORO_CLONE
3088 struct coro *ncoro = coro_clone (aTHX_ coro);
3089 MAGIC *mg;
3090 /* TODO: too much duplication */
3091 ncoro->hv = newHV ();
3092 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3093 mg->mg_flags |= MGf_DUP;
3094 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3095#else
3096 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3097#endif
3098}
3099 OUTPUT:
3100 RETVAL
3101
1878int 3102int
1879cctx_stacksize (int new_stacksize = 0) 3103cctx_stacksize (int new_stacksize = 0)
3104 PROTOTYPE: ;$
1880 CODE: 3105 CODE:
1881 RETVAL = coro_stacksize; 3106 RETVAL = cctx_stacksize;
1882 if (new_stacksize) 3107 if (new_stacksize)
3108 {
1883 coro_stacksize = new_stacksize; 3109 cctx_stacksize = new_stacksize;
3110 ++cctx_gen;
3111 }
1884 OUTPUT: 3112 OUTPUT:
1885 RETVAL 3113 RETVAL
1886 3114
1887int 3115int
3116cctx_max_idle (int max_idle = 0)
3117 PROTOTYPE: ;$
3118 CODE:
3119 RETVAL = cctx_max_idle;
3120 if (max_idle > 1)
3121 cctx_max_idle = max_idle;
3122 OUTPUT:
3123 RETVAL
3124
3125int
1888cctx_count () 3126cctx_count ()
3127 PROTOTYPE:
1889 CODE: 3128 CODE:
1890 RETVAL = cctx_count; 3129 RETVAL = cctx_count;
1891 OUTPUT: 3130 OUTPUT:
1892 RETVAL 3131 RETVAL
1893 3132
1894int 3133int
1895cctx_idle () 3134cctx_idle ()
3135 PROTOTYPE:
1896 CODE: 3136 CODE:
1897 RETVAL = cctx_idle; 3137 RETVAL = cctx_idle;
1898 OUTPUT: 3138 OUTPUT:
1899 RETVAL 3139 RETVAL
1900 3140
1901void 3141void
1902list () 3142list ()
3143 PROTOTYPE:
1903 PPCODE: 3144 PPCODE:
1904{ 3145{
1905 struct coro *coro; 3146 struct coro *coro;
1906 for (coro = coro_first; coro; coro = coro->next) 3147 for (coro = coro_first; coro; coro = coro->next)
1907 if (coro->hv) 3148 if (coro->hv)
… …
1914 eval = 1 3155 eval = 1
1915 CODE: 3156 CODE:
1916{ 3157{
1917 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3158 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1918 { 3159 {
1919 struct coro temp; 3160 struct coro *current = SvSTATE_current;
1920 3161
1921 if (!(coro->flags & CF_RUNNING)) 3162 if (current != coro)
1922 { 3163 {
1923 PUTBACK; 3164 PUTBACK;
1924 save_perl (aTHX_ &temp); 3165 save_perl (aTHX_ current);
1925 load_perl (aTHX_ coro); 3166 load_perl (aTHX_ coro);
3167 SPAGAIN;
1926 } 3168 }
1927 3169
1928 {
1929 dSP;
1930 ENTER;
1931 SAVETMPS;
1932 PUTBACK;
1933 PUSHSTACK; 3170 PUSHSTACK;
3171
1934 PUSHMARK (SP); 3172 PUSHMARK (SP);
3173 PUTBACK;
1935 3174
1936 if (ix) 3175 if (ix)
1937 eval_sv (coderef, 0); 3176 eval_sv (coderef, 0);
1938 else 3177 else
1939 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3178 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1940 3179
1941 POPSTACK; 3180 POPSTACK;
1942 SPAGAIN; 3181 SPAGAIN;
1943 FREETMPS;
1944 LEAVE;
1945 PUTBACK;
1946 }
1947 3182
1948 if (!(coro->flags & CF_RUNNING)) 3183 if (current != coro)
1949 { 3184 {
3185 PUTBACK;
1950 save_perl (aTHX_ coro); 3186 save_perl (aTHX_ coro);
1951 load_perl (aTHX_ &temp); 3187 load_perl (aTHX_ current);
1952 SPAGAIN; 3188 SPAGAIN;
1953 } 3189 }
1954 } 3190 }
1955} 3191}
1956 3192
… …
1960 ALIAS: 3196 ALIAS:
1961 is_ready = CF_READY 3197 is_ready = CF_READY
1962 is_running = CF_RUNNING 3198 is_running = CF_RUNNING
1963 is_new = CF_NEW 3199 is_new = CF_NEW
1964 is_destroyed = CF_DESTROYED 3200 is_destroyed = CF_DESTROYED
3201 is_suspended = CF_SUSPENDED
1965 CODE: 3202 CODE:
1966 RETVAL = boolSV (coro->flags & ix); 3203 RETVAL = boolSV (coro->flags & ix);
1967 OUTPUT: 3204 OUTPUT:
1968 RETVAL 3205 RETVAL
1969 3206
1970void 3207void
3208throw (Coro::State self, SV *throw = &PL_sv_undef)
3209 PROTOTYPE: $;$
3210 CODE:
3211{
3212 struct coro *current = SvSTATE_current;
3213 SV **throwp = self == current ? &CORO_THROW : &self->except;
3214 SvREFCNT_dec (*throwp);
3215 SvGETMAGIC (throw);
3216 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3217}
3218
3219void
1971api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3220api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3221 PROTOTYPE: $;$
3222 C_ARGS: aTHX_ coro, flags
1972 3223
1973SV * 3224SV *
1974has_cctx (Coro::State coro) 3225has_cctx (Coro::State coro)
1975 PROTOTYPE: $ 3226 PROTOTYPE: $
1976 CODE: 3227 CODE:
1977 RETVAL = boolSV (!!coro->cctx); 3228 /* maybe manage the running flag differently */
3229 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1978 OUTPUT: 3230 OUTPUT:
1979 RETVAL 3231 RETVAL
1980 3232
1981int 3233int
1982is_traced (Coro::State coro) 3234is_traced (Coro::State coro)
… …
1984 CODE: 3236 CODE:
1985 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3237 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1986 OUTPUT: 3238 OUTPUT:
1987 RETVAL 3239 RETVAL
1988 3240
1989IV 3241UV
1990rss (Coro::State coro) 3242rss (Coro::State coro)
1991 PROTOTYPE: $ 3243 PROTOTYPE: $
1992 ALIAS: 3244 ALIAS:
1993 usecount = 1 3245 usecount = 1
1994 CODE: 3246 CODE:
… …
2000 OUTPUT: 3252 OUTPUT:
2001 RETVAL 3253 RETVAL
2002 3254
2003void 3255void
2004force_cctx () 3256force_cctx ()
3257 PROTOTYPE:
2005 CODE: 3258 CODE:
2006 struct coro *coro = SvSTATE (coro_current);
2007 coro->cctx->idle_sp = 0; 3259 cctx_current->idle_sp = 0;
2008
2009void
2010throw (Coro::State self, SV *throw = &PL_sv_undef)
2011 PROTOTYPE: $;$
2012 CODE:
2013 SvREFCNT_dec (self->throw);
2014 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2015 3260
2016void 3261void
2017swap_defsv (Coro::State self) 3262swap_defsv (Coro::State self)
2018 PROTOTYPE: $ 3263 PROTOTYPE: $
2019 ALIAS: 3264 ALIAS:
2020 swap_defav = 1 3265 swap_defav = 1
2021 CODE: 3266 CODE:
2022 if (!self->slot) 3267 if (!self->slot)
2023 croak ("cannot swap state with coroutine that has no saved state"); 3268 croak ("cannot swap state with coroutine that has no saved state,");
2024 else 3269 else
2025 { 3270 {
2026 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3271 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2027 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3272 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2028 3273
2029 SV *tmp = *src; *src = *dst; *dst = tmp; 3274 SV *tmp = *src; *src = *dst; *dst = tmp;
2030 } 3275 }
2031 3276
3277void
3278cancel (Coro::State self)
3279 CODE:
3280 coro_state_destroy (aTHX_ self);
3281 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3282
3283
3284SV *
3285enable_times (int enabled = enable_times)
3286 CODE:
3287{
3288 RETVAL = boolSV (enable_times);
3289
3290 if (enabled != enable_times)
3291 {
3292 enable_times = enabled;
3293
3294 coro_times_update ();
3295 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3296 }
3297}
3298 OUTPUT:
3299 RETVAL
3300
3301void
3302times (Coro::State self)
3303 PPCODE:
3304{
3305 struct coro *current = SvSTATE (coro_current);
3306
3307 if (expect_false (current == self))
3308 {
3309 coro_times_update ();
3310 coro_times_add (SvSTATE (coro_current));
3311 }
3312
3313 EXTEND (SP, 2);
3314 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3315 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3316
3317 if (expect_false (current == self))
3318 coro_times_sub (SvSTATE (coro_current));
3319}
3320
2032MODULE = Coro::State PACKAGE = Coro 3321MODULE = Coro::State PACKAGE = Coro
2033 3322
2034BOOT: 3323BOOT:
2035{ 3324{
2036 int i;
2037
2038 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2039 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3325 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2040 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3326 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2041 3327 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3328 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2042 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3329 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2043 SvREADONLY_on (coro_current); 3330 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3331 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3332 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3333 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2044 3334
3335 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3336 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3337 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3338 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3339
2045 coro_stash = gv_stashpv ("Coro", TRUE); 3340 coro_stash = gv_stashpv ("Coro", TRUE);
2046 3341
2047 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3342 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2048 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3343 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2049 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3344 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2050 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3345 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2051 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3346 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2052 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3347 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2053
2054 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2055 coro_ready[i] = newAV ();
2056 3348
2057 { 3349 {
2058 SV *sv = perl_get_sv ("Coro::API", TRUE); 3350 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2059 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2060 3351
2061 coroapi.schedule = api_schedule; 3352 coroapi.schedule = api_schedule;
3353 coroapi.schedule_to = api_schedule_to;
2062 coroapi.cede = api_cede; 3354 coroapi.cede = api_cede;
2063 coroapi.cede_notself = api_cede_notself; 3355 coroapi.cede_notself = api_cede_notself;
2064 coroapi.ready = api_ready; 3356 coroapi.ready = api_ready;
2065 coroapi.is_ready = api_is_ready; 3357 coroapi.is_ready = api_is_ready;
2066 coroapi.nready = &coro_nready; 3358 coroapi.nready = coro_nready;
2067 coroapi.current = coro_current; 3359 coroapi.current = coro_current;
2068 3360
2069 GCoroAPI = &coroapi; 3361 /*GCoroAPI = &coroapi;*/
2070 sv_setiv (sv, (IV)&coroapi); 3362 sv_setiv (sv, (IV)&coroapi);
2071 SvREADONLY_on (sv); 3363 SvREADONLY_on (sv);
2072 } 3364 }
2073} 3365}
3366
3367SV *
3368async (...)
3369 PROTOTYPE: &@
3370 CODE:
3371 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3372 api_ready (aTHX_ RETVAL);
3373 OUTPUT:
3374 RETVAL
3375
3376void
3377terminate (...)
3378 CODE:
3379 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3380
3381void
3382schedule (...)
3383 CODE:
3384 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3385
3386void
3387schedule_to (...)
3388 CODE:
3389 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3390
3391void
3392cede_to (...)
3393 CODE:
3394 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3395
3396void
3397cede (...)
3398 CODE:
3399 CORO_EXECUTE_SLF_XS (slf_init_cede);
3400
3401void
3402cede_notself (...)
3403 CODE:
3404 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2074 3405
2075void 3406void
2076_set_current (SV *current) 3407_set_current (SV *current)
2077 PROTOTYPE: $ 3408 PROTOTYPE: $
2078 CODE: 3409 CODE:
… …
2081 3412
2082void 3413void
2083_set_readyhook (SV *hook) 3414_set_readyhook (SV *hook)
2084 PROTOTYPE: $ 3415 PROTOTYPE: $
2085 CODE: 3416 CODE:
2086 LOCK;
2087 SvREFCNT_dec (coro_readyhook); 3417 SvREFCNT_dec (coro_readyhook);
3418 SvGETMAGIC (hook);
3419 if (SvOK (hook))
3420 {
2088 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3421 coro_readyhook = newSVsv (hook);
2089 UNLOCK; 3422 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3423 }
3424 else
3425 {
3426 coro_readyhook = 0;
3427 CORO_READYHOOK = 0;
3428 }
2090 3429
2091int 3430int
2092prio (Coro::State coro, int newprio = 0) 3431prio (Coro::State coro, int newprio = 0)
3432 PROTOTYPE: $;$
2093 ALIAS: 3433 ALIAS:
2094 nice = 1 3434 nice = 1
2095 CODE: 3435 CODE:
2096{ 3436{
2097 RETVAL = coro->prio; 3437 RETVAL = coro->prio;
… …
2099 if (items > 1) 3439 if (items > 1)
2100 { 3440 {
2101 if (ix) 3441 if (ix)
2102 newprio = coro->prio - newprio; 3442 newprio = coro->prio - newprio;
2103 3443
2104 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3444 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2105 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3445 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2106 3446
2107 coro->prio = newprio; 3447 coro->prio = newprio;
2108 } 3448 }
2109} 3449}
2110 OUTPUT: 3450 OUTPUT:
… …
2112 3452
2113SV * 3453SV *
2114ready (SV *self) 3454ready (SV *self)
2115 PROTOTYPE: $ 3455 PROTOTYPE: $
2116 CODE: 3456 CODE:
2117 RETVAL = boolSV (api_ready (self)); 3457 RETVAL = boolSV (api_ready (aTHX_ self));
2118 OUTPUT: 3458 OUTPUT:
2119 RETVAL 3459 RETVAL
2120 3460
2121int 3461int
2122nready (...) 3462nready (...)
… …
2124 CODE: 3464 CODE:
2125 RETVAL = coro_nready; 3465 RETVAL = coro_nready;
2126 OUTPUT: 3466 OUTPUT:
2127 RETVAL 3467 RETVAL
2128 3468
2129# for async_pool speedup
2130void 3469void
2131_pool_1 (SV *cb) 3470suspend (Coro::State self)
3471 PROTOTYPE: $
2132 CODE: 3472 CODE:
2133{ 3473 self->flags |= CF_SUSPENDED;
2134 struct coro *coro = SvSTATE (coro_current);
2135 HV *hv = (HV *)SvRV (coro_current);
2136 AV *defav = GvAV (PL_defgv);
2137 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2138 AV *invoke_av;
2139 int i, len;
2140 3474
2141 if (!invoke) 3475void
3476resume (Coro::State self)
3477 PROTOTYPE: $
3478 CODE:
3479 self->flags &= ~CF_SUSPENDED;
3480
3481void
3482_pool_handler (...)
3483 CODE:
3484 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3485
3486void
3487async_pool (SV *cv, ...)
3488 PROTOTYPE: &@
3489 PPCODE:
3490{
3491 HV *hv = (HV *)av_pop (av_async_pool);
3492 AV *av = newAV ();
3493 SV *cb = ST (0);
3494 int i;
3495
3496 av_extend (av, items - 2);
3497 for (i = 1; i < items; ++i)
3498 av_push (av, SvREFCNT_inc_NN (ST (i)));
3499
3500 if ((SV *)hv == &PL_sv_undef)
2142 { 3501 {
2143 SV *old = PL_diehook; 3502 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2144 PL_diehook = 0; 3503 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2145 SvREFCNT_dec (old); 3504 SvREFCNT_dec (sv);
2146 croak ("\3async_pool terminate\2\n");
2147 } 3505 }
2148 3506
2149 SvREFCNT_dec (coro->saved_deffh);
2150 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2151
2152 hv_store (hv, "desc", sizeof ("desc") - 1,
2153 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2154
2155 invoke_av = (AV *)SvRV (invoke);
2156 len = av_len (invoke_av);
2157
2158 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2159
2160 if (len > 0)
2161 { 3507 {
2162 av_fill (defav, len - 1); 3508 struct coro *coro = SvSTATE_hv (hv);
2163 for (i = 0; i < len; ++i) 3509
2164 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3510 assert (!coro->invoke_cb);
3511 assert (!coro->invoke_av);
3512 coro->invoke_cb = SvREFCNT_inc (cb);
3513 coro->invoke_av = av;
2165 } 3514 }
2166 3515
3516 api_ready (aTHX_ (SV *)hv);
3517
3518 if (GIMME_V != G_VOID)
3519 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3520 else
2167 SvREFCNT_dec (invoke); 3521 SvREFCNT_dec (hv);
2168} 3522}
2169 3523
2170void 3524SV *
2171_pool_2 (SV *cb) 3525rouse_cb ()
3526 PROTOTYPE:
2172 CODE: 3527 CODE:
2173{ 3528 RETVAL = coro_new_rouse_cb (aTHX);
2174 struct coro *coro = SvSTATE (coro_current);
2175
2176 sv_setsv (cb, &PL_sv_undef);
2177
2178 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2179 coro->saved_deffh = 0;
2180
2181 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2182 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2183 {
2184 SV *old = PL_diehook;
2185 PL_diehook = 0;
2186 SvREFCNT_dec (old);
2187 croak ("\3async_pool terminate\2\n");
2188 }
2189
2190 av_clear (GvAV (PL_defgv));
2191 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2192 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2193
2194 coro->prio = 0;
2195
2196 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2197 api_trace (coro_current, 0);
2198
2199 av_push (av_async_pool, newSVsv (coro_current));
2200}
2201
2202#if 0
2203
2204void
2205_generator_call (...)
2206 PROTOTYPE: @
2207 PPCODE:
2208 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2209 xxxx
2210 abort ();
2211
2212SV *
2213gensub (SV *sub, ...)
2214 PROTOTYPE: &;@
2215 CODE:
2216{
2217 struct coro *coro;
2218 MAGIC *mg;
2219 CV *xcv;
2220 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2221 int i;
2222
2223 CvGV (ncv) = CvGV (cv);
2224 CvFILE (ncv) = CvFILE (cv);
2225
2226 Newz (0, coro, 1, struct coro);
2227 coro->args = newAV ();
2228 coro->flags = CF_NEW;
2229
2230 av_extend (coro->args, items - 1);
2231 for (i = 1; i < items; i++)
2232 av_push (coro->args, newSVsv (ST (i)));
2233
2234 CvISXSUB_on (ncv);
2235 CvXSUBANY (ncv).any_ptr = (void *)coro;
2236
2237 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2238
2239 CvXSUB (ncv) = CvXSUB (xcv);
2240 CvANON_on (ncv);
2241
2242 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2243 RETVAL = newRV_noinc ((SV *)ncv);
2244}
2245 OUTPUT: 3529 OUTPUT:
2246 RETVAL 3530 RETVAL
2247 3531
2248#endif
2249
2250
2251MODULE = Coro::State PACKAGE = Coro::AIO
2252
2253void 3532void
2254_get_state (SV *self) 3533rouse_wait (...)
3534 PROTOTYPE: ;$
2255 PPCODE: 3535 PPCODE:
2256{ 3536 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2257 AV *defav = GvAV (PL_defgv);
2258 AV *av = newAV ();
2259 int i;
2260 SV *data_sv = newSV (sizeof (struct io_state));
2261 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2262 SvCUR_set (data_sv, sizeof (struct io_state));
2263 SvPOK_only (data_sv);
2264
2265 data->errorno = errno;
2266 data->laststype = PL_laststype;
2267 data->laststatval = PL_laststatval;
2268 data->statcache = PL_statcache;
2269
2270 av_extend (av, AvFILLp (defav) + 1 + 1);
2271
2272 for (i = 0; i <= AvFILLp (defav); ++i)
2273 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2274
2275 av_push (av, data_sv);
2276
2277 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2278
2279 api_ready (self);
2280}
2281 3537
2282void 3538void
2283_set_state (SV *state) 3539on_enter (SV *block)
3540 ALIAS:
3541 on_leave = 1
2284 PROTOTYPE: $ 3542 PROTOTYPE: &
3543 CODE:
3544{
3545 struct coro *coro = SvSTATE_current;
3546 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3547
3548 block = s_get_cv_croak (block);
3549
3550 if (!*avp)
3551 *avp = newAV ();
3552
3553 av_push (*avp, SvREFCNT_inc (block));
3554
3555 if (!ix)
3556 on_enterleave_call (aTHX_ block);
3557
3558 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3559 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3560 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3561}
3562
3563
3564MODULE = Coro::State PACKAGE = PerlIO::cede
3565
3566BOOT:
3567 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3568
3569
3570MODULE = Coro::State PACKAGE = Coro::Semaphore
3571
3572SV *
3573new (SV *klass, SV *count = 0)
3574 CODE:
3575{
3576 int semcnt = 1;
3577
3578 if (count)
3579 {
3580 SvGETMAGIC (count);
3581
3582 if (SvOK (count))
3583 semcnt = SvIV (count);
3584 }
3585
3586 RETVAL = sv_bless (
3587 coro_waitarray_new (aTHX_ semcnt),
3588 GvSTASH (CvGV (cv))
3589 );
3590}
3591 OUTPUT:
3592 RETVAL
3593
3594# helper for Coro::Channel and others
3595SV *
3596_alloc (int count)
3597 CODE:
3598 RETVAL = coro_waitarray_new (aTHX_ count);
3599 OUTPUT:
3600 RETVAL
3601
3602SV *
3603count (SV *self)
3604 CODE:
3605 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3606 OUTPUT:
3607 RETVAL
3608
3609void
3610up (SV *self, int adjust = 1)
3611 ALIAS:
3612 adjust = 1
3613 CODE:
3614 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3615
3616void
3617down (...)
3618 CODE:
3619 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3620
3621void
3622wait (...)
3623 CODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3625
3626void
3627try (SV *self)
3628 PPCODE:
3629{
3630 AV *av = (AV *)SvRV (self);
3631 SV *count_sv = AvARRAY (av)[0];
3632 IV count = SvIVX (count_sv);
3633
3634 if (count > 0)
3635 {
3636 --count;
3637 SvIVX (count_sv) = count;
3638 XSRETURN_YES;
3639 }
3640 else
3641 XSRETURN_NO;
3642}
3643
3644void
3645waiters (SV *self)
3646 PPCODE:
3647{
3648 AV *av = (AV *)SvRV (self);
3649 int wcount = AvFILLp (av) + 1 - 1;
3650
3651 if (GIMME_V == G_SCALAR)
3652 XPUSHs (sv_2mortal (newSViv (wcount)));
3653 else
3654 {
3655 int i;
3656 EXTEND (SP, wcount);
3657 for (i = 1; i <= wcount; ++i)
3658 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3659 }
3660}
3661
3662MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3663
3664void
3665_may_delete (SV *sem, int count, int extra_refs)
2285 PPCODE: 3666 PPCODE:
2286{ 3667{
2287 AV *av = (AV *)SvRV (state); 3668 AV *av = (AV *)SvRV (sem);
2288 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2289 int i;
2290 3669
2291 errno = data->errorno; 3670 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2292 PL_laststype = data->laststype; 3671 && AvFILLp (av) == 0 /* no waiters, just count */
2293 PL_laststatval = data->laststatval; 3672 && SvIV (AvARRAY (av)[0]) == count)
2294 PL_statcache = data->statcache; 3673 XSRETURN_YES;
2295 3674
3675 XSRETURN_NO;
3676}
3677
3678MODULE = Coro::State PACKAGE = Coro::Signal
3679
3680SV *
3681new (SV *klass)
3682 CODE:
3683 RETVAL = sv_bless (
3684 coro_waitarray_new (aTHX_ 0),
3685 GvSTASH (CvGV (cv))
3686 );
3687 OUTPUT:
3688 RETVAL
3689
3690void
3691wait (...)
3692 CODE:
3693 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3694
3695void
3696broadcast (SV *self)
3697 CODE:
3698{
3699 AV *av = (AV *)SvRV (self);
3700 coro_signal_wake (aTHX_ av, AvFILLp (av));
3701}
3702
3703void
3704send (SV *self)
3705 CODE:
3706{
3707 AV *av = (AV *)SvRV (self);
3708
2296 EXTEND (SP, AvFILLp (av)); 3709 if (AvFILLp (av))
2297 for (i = 0; i < AvFILLp (av); ++i) 3710 coro_signal_wake (aTHX_ av, 1);
2298 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3711 else
3712 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2299} 3713}
3714
3715IV
3716awaited (SV *self)
3717 CODE:
3718 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3719 OUTPUT:
3720 RETVAL
2300 3721
2301 3722
2302MODULE = Coro::State PACKAGE = Coro::AnyEvent 3723MODULE = Coro::State PACKAGE = Coro::AnyEvent
2303 3724
2304BOOT: 3725BOOT:
2305 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3726 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2306 3727
2307SV * 3728void
2308_schedule (...) 3729_schedule (...)
2309 PROTOTYPE: @
2310 CODE: 3730 CODE:
2311{ 3731{
2312 static int incede; 3732 static int incede;
2313 3733
2314 api_cede_notself (); 3734 api_cede_notself (aTHX);
2315 3735
2316 ++incede; 3736 ++incede;
2317 while (coro_nready >= incede && api_cede ()) 3737 while (coro_nready >= incede && api_cede (aTHX))
2318 ; 3738 ;
2319 3739
2320 sv_setsv (sv_activity, &PL_sv_undef); 3740 sv_setsv (sv_activity, &PL_sv_undef);
2321 if (coro_nready >= incede) 3741 if (coro_nready >= incede)
2322 { 3742 {
2323 PUSHMARK (SP); 3743 PUSHMARK (SP);
2324 PUTBACK; 3744 PUTBACK;
2325 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3745 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 SPAGAIN;
2327 } 3746 }
2328 3747
2329 --incede; 3748 --incede;
2330} 3749}
2331 3750
2332 3751
2333MODULE = Coro::State PACKAGE = PerlIO::cede 3752MODULE = Coro::State PACKAGE = Coro::AIO
2334 3753
2335BOOT: 3754void
2336 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3755_register (char *target, char *proto, SV *req)
3756 CODE:
3757{
3758 SV *req_cv = s_get_cv_croak (req);
3759 /* newXSproto doesn't return the CV on 5.8 */
3760 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3761 sv_setpv ((SV *)slf_cv, proto);
3762 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3763}
3764
3765MODULE = Coro::State PACKAGE = Coro::Select
3766
3767void
3768patch_pp_sselect ()
3769 CODE:
3770 if (!coro_old_pp_sselect)
3771 {
3772 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3773 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3774 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3775 }
3776
3777void
3778unpatch_pp_sselect ()
3779 CODE:
3780 if (coro_old_pp_sselect)
3781 {
3782 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3783 coro_old_pp_sselect = 0;
3784 }
3785
3786

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