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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.411 by root, Mon Jun 13 08:38:15 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#if HAVE_MMAP
27# include <unistd.h> 39# include <unistd.h>
28# include <sys/mman.h> 40# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS 41# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON 42# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON 43# define MAP_ANONYMOUS MAP_ANON
… …
51#endif 63#endif
52 64
53/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 66static int cctx_max_idle = 4;
55 67
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 69# undef CORO_STACKGUARD
108#endif 70#endif
109 71
110#ifndef CORO_STACKGUARD 72#ifndef CORO_STACKGUARD
… …
117#endif 79#endif
118 80
119/* The next macros try to return the current stack pointer, in an as 81/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 82 * portable way as possible. */
121#if __GNUC__ >= 4 83#if __GNUC__ >= 4
84# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 85# define STACKLEVEL __builtin_frame_address (0)
123#else 86#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 87# define dSTACKLEVEL volatile void *stacklevel
88# define STACKLEVEL ((void *)&stacklevel)
125#endif 89#endif
126 90
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 91#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 92
144#include "CoroAPI.h" 93#include "CoroAPI.h"
94#define GCoroAPI (&coroapi) /* very sneaky */
145 95
146#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
147# if CORO_PTHREAD 97# if CORO_PTHREAD
148static void *coro_thx; 98static void *coro_thx;
149# endif 99# endif
150#endif 100#endif
151 101
152/* helper storage struct for Coro::AIO */ 102/* used in state.h */
153struct io_state 103#define VAR(name,type) VARx(name, PL_ ## name, type)
154{ 104
155 AV *res; 105#ifdef __linux
156 int errorno; 106# include <time.h> /* for timespec */
157 I32 laststype; /* U16 in 5.10.0 */ 107# include <syscall.h> /* for SYS_* */
158 int laststatval; 108# ifdef SYS_clock_gettime
159 Stat_t statcache; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
160}; 110# define CORO_CLOCK_MONOTONIC 1
111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
112# endif
113#endif
161 114
162static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
121static void slf_destroy (pTHX_ struct coro *coro);
163 122
164static U32 cctx_gen; 123static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 124static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 125static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 126static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 127static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 128static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 129static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 130
131static AV *av_destroy; /* destruction queue */
132static SV *sv_manager; /* the manager coro */
133static SV *sv_idle; /* $Coro::idle */
134
172static GV *irsgv; /* $/ */ 135static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 136static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 137static SV *rv_diehook;
175static SV *rv_warnhook; 138static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 139static HV *hv_sig; /* %SIG */
177 140
178/* async_pool helper stuff */ 141/* async_pool helper stuff */
179static SV *sv_pool_rss; 142static SV *sv_pool_rss;
180static SV *sv_pool_size; 143static SV *sv_pool_size;
144static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 145static AV *av_async_pool; /* idle pool */
146static SV *sv_Coro; /* class string */
147static CV *cv_pool_handler;
182 148
183/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
184static SV *sv_activity; 150static SV *sv_activity;
185 151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
157
186static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
188 160
189enum { 161enum
162{
190 CC_MAPPED = 0x01, 163 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 164 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 165 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 166 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 167 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
215 int valgrind_id; 188 int valgrind_id;
216#endif 189#endif
217 unsigned char flags; 190 unsigned char flags;
218} coro_cctx; 191} coro_cctx;
219 192
193static coro_cctx *cctx_current; /* the currently running cctx */
194
195/*****************************************************************************/
196
197static MGVTBL coro_state_vtbl;
198
220enum { 199enum
200{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 204 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
205 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
206 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 207};
226 208
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 210typedef struct
229{ 211{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 212#define VARx(name,expr,type) type name;
235# include "state.h" 213# include "state.h"
236#undef VAR 214#undef VARx
237} perl_slots; 215} perl_slots;
238 216
217/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 219
241/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
242struct coro { 221struct coro
222{
243 /* the C coroutine allocated to this perl coroutine, if any */ 223 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 224 coro_cctx *cctx;
245 225
246 /* process data */ 226 /* ready queue */
227 struct coro *next_ready;
228
229 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 230 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 231 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 232 perl_slots *slot; /* basically the saved sp */
250 233
234 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 235 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 236 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 237 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 238
257 /* statistics */ 239 /* statistics */
258 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
259 241
260 /* coro process data */ 242 /* coro process data */
261 int prio; 243 int prio;
262 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb; /* last rouse callback */
246 AV *on_destroy; /* callbacks or coros to notify on destroy */
247 AV *status; /* the exit status list */
263 248
264 /* async_pool */ 249 /* async_pool */
265 SV *saved_deffh; 250 SV *saved_deffh;
251 SV *invoke_cb;
252 AV *invoke_av;
253
254 /* on_enter/on_leave */
255 AV *on_enter;
256 AV *on_leave;
257
258 /* swap_sv */
259 AV *swap_sv;
260
261 /* times */
262 coro_ts t_cpu, t_real;
266 263
267 /* linked list */ 264 /* linked list */
268 struct coro *next, *prev; 265 struct coro *next, *prev;
269}; 266};
270 267
271typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
273 270
271/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */
273/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 274static struct CoroSLF slf_frame; /* the current slf frame */
275 275
276/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
277 277
278#define PRIO_MAX 3 278#define CORO_PRIO_MAX 3
279#define PRIO_HIGH 1 279#define CORO_PRIO_HIGH 1
280#define PRIO_NORMAL 0 280#define CORO_PRIO_NORMAL 0
281#define PRIO_LOW -1 281#define CORO_PRIO_LOW -1
282#define PRIO_IDLE -3 282#define CORO_PRIO_IDLE -3
283#define PRIO_MIN -4 283#define CORO_PRIO_MIN -4
284 284
285/* for Coro.pm */ 285/* for Coro.pm */
286static SV *coro_current; 286static SV *coro_current;
287static SV *coro_readyhook; 287static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 288static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
289static CV *cv_coro_run;
289static struct coro *coro_first; 290static struct coro *coro_first;
290#define coro_nready coroapi.nready 291#define coro_nready coroapi.nready
291 292
293/** JIT *********************************************************************/
294
295#if CORO_JIT
296 /* APPLE doesn't have HAVE_MMAP though */
297 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
298 #ifndef CORO_JIT_TYPE
299 #if __x86_64 && CORO_JIT_UNIXY
300 #define CORO_JIT_TYPE "amd64-unix"
301 #elif __i386 && CORO_JIT_UNIXY
302 #define CORO_JIT_TYPE "x86-unix"
303 #endif
304 #endif
305#endif
306
307#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
308 #undef CORO_JIT
309#endif
310
311#if CORO_JIT
312 typedef void (*load_save_perl_slots_type)(perl_slots *);
313 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
314#endif
315
316/** Coro::Select ************************************************************/
317
318static OP *(*coro_old_pp_sselect) (pTHX);
319static SV *coro_select_select;
320
321/* horrible hack, but if it works... */
322static OP *
323coro_pp_sselect (pTHX)
324{
325 dSP;
326 PUSHMARK (SP - 4); /* fake argument list */
327 XPUSHs (coro_select_select);
328 PUTBACK;
329
330 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
331 PL_op->op_flags |= OPf_STACKED;
332 PL_op->op_private = 0;
333 return PL_ppaddr [OP_ENTERSUB](aTHX);
334}
335
336/** time stuff **************************************************************/
337
338#ifdef HAS_GETTIMEOFDAY
339
340ECB_INLINE void
341coro_u2time (pTHX_ UV ret[2])
342{
343 struct timeval tv;
344 gettimeofday (&tv, 0);
345
346 ret [0] = tv.tv_sec;
347 ret [1] = tv.tv_usec;
348}
349
350ECB_INLINE double
351coro_nvtime (void)
352{
353 struct timeval tv;
354 gettimeofday (&tv, 0);
355
356 return tv.tv_sec + tv.tv_usec * 1e-6;
357}
358
359ECB_INLINE void
360time_init (pTHX)
361{
362 nvtime = coro_nvtime;
363 u2time = coro_u2time;
364}
365
366#else
367
368ECB_INLINE void
369time_init (pTHX)
370{
371 SV **svp;
372
373 require_pv ("Time/HiRes.pm");
374
375 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
376
377 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
378 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
379
380 nvtime = INT2PTR (double (*)(), SvIV (*svp));
381
382 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
383 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
384}
385
386#endif
387
292/** lowlevel stuff **********************************************************/ 388/** lowlevel stuff **********************************************************/
293 389
294static SV * 390static SV * ecb_noinline
295coro_get_sv (pTHX_ const char *name, int create) 391coro_get_sv (pTHX_ const char *name, int create)
296{ 392{
297#if PERL_VERSION_ATLEAST (5,10,0) 393#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 394 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_sv (name, create); 395 get_sv (name, create);
300#endif 396#endif
301 return get_sv (name, create); 397 return get_sv (name, create);
302} 398}
303 399
304static AV * 400static AV * ecb_noinline
305coro_get_av (pTHX_ const char *name, int create) 401coro_get_av (pTHX_ const char *name, int create)
306{ 402{
307#if PERL_VERSION_ATLEAST (5,10,0) 403#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 404 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_av (name, create); 405 get_av (name, create);
310#endif 406#endif
311 return get_av (name, create); 407 return get_av (name, create);
312} 408}
313 409
314static HV * 410static HV * ecb_noinline
315coro_get_hv (pTHX_ const char *name, int create) 411coro_get_hv (pTHX_ const char *name, int create)
316{ 412{
317#if PERL_VERSION_ATLEAST (5,10,0) 413#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 414 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_hv (name, create); 415 get_hv (name, create);
320#endif 416#endif
321 return get_hv (name, create); 417 return get_hv (name, create);
322} 418}
323 419
324static AV * 420ECB_INLINE void
421coro_times_update (void)
422{
423#ifdef coro_clock_gettime
424 struct timespec ts;
425
426 ts.tv_sec = ts.tv_nsec = 0;
427 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
428 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
429
430 ts.tv_sec = ts.tv_nsec = 0;
431 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
432 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
433#else
434 dTHX;
435 UV tv[2];
436
437 u2time (aTHX_ tv);
438 time_real [0] = tv [0];
439 time_real [1] = tv [1] * 1000;
440#endif
441}
442
443ECB_INLINE void
444coro_times_add (struct coro *c)
445{
446 c->t_real [1] += time_real [1];
447 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
448 c->t_real [0] += time_real [0];
449
450 c->t_cpu [1] += time_cpu [1];
451 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
452 c->t_cpu [0] += time_cpu [0];
453}
454
455ECB_INLINE void
456coro_times_sub (struct coro *c)
457{
458 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
459 c->t_real [1] -= time_real [1];
460 c->t_real [0] -= time_real [0];
461
462 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
463 c->t_cpu [1] -= time_cpu [1];
464 c->t_cpu [0] -= time_cpu [0];
465}
466
467/*****************************************************************************/
468/* magic glue */
469
470#define CORO_MAGIC_type_cv 26
471#define CORO_MAGIC_type_state PERL_MAGIC_ext
472
473#define CORO_MAGIC_NN(sv, type) \
474 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
475 ? SvMAGIC (sv) \
476 : mg_find (sv, type))
477
478#define CORO_MAGIC(sv, type) \
479 (ecb_expect_true (SvMAGIC (sv)) \
480 ? CORO_MAGIC_NN (sv, type) \
481 : 0)
482
483#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
484#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
485
486ECB_INLINE MAGIC *
487SvSTATEhv_p (pTHX_ SV *coro)
488{
489 MAGIC *mg;
490
491 if (ecb_expect_true (
492 SvTYPE (coro) == SVt_PVHV
493 && (mg = CORO_MAGIC_state (coro))
494 && mg->mg_virtual == &coro_state_vtbl
495 ))
496 return mg;
497
498 return 0;
499}
500
501ECB_INLINE struct coro *
502SvSTATE_ (pTHX_ SV *coro)
503{
504 MAGIC *mg;
505
506 if (SvROK (coro))
507 coro = SvRV (coro);
508
509 mg = SvSTATEhv_p (aTHX_ coro);
510 if (!mg)
511 croak ("Coro::State object required");
512
513 return (struct coro *)mg->mg_ptr;
514}
515
516#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
517
518/* faster than SvSTATE, but expects a coroutine hv */
519#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
520#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
521
522/*****************************************************************************/
523/* padlist management and caching */
524
525ECB_INLINE AV *
325coro_clone_padlist (pTHX_ CV *cv) 526coro_derive_padlist (pTHX_ CV *cv)
326{ 527{
327 AV *padlist = CvPADLIST (cv); 528 AV *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 529 AV *newpadlist, *newpad;
329 530
330 newpadlist = newAV (); 531 newpadlist = newAV ();
… …
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 536 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif 537#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 538 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist); 539 --AvFILLp (padlist);
339 540
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 541 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
341 av_store (newpadlist, 1, (SV *)newpad); 542 av_store (newpadlist, 1, (SV *)newpad);
342 543
343 return newpadlist; 544 return newpadlist;
344} 545}
345 546
346static void 547ECB_INLINE void
347free_padlist (pTHX_ AV *padlist) 548free_padlist (pTHX_ AV *padlist)
348{ 549{
349 /* may be during global destruction */ 550 /* may be during global destruction */
350 if (SvREFCNT (padlist)) 551 if (!IN_DESTRUCT)
351 { 552 {
352 I32 i = AvFILLp (padlist); 553 I32 i = AvFILLp (padlist);
353 while (i >= 0) 554
555 while (i > 0) /* special-case index 0 */
354 { 556 {
355 SV **svp = av_fetch (padlist, i--, FALSE); 557 /* we try to be extra-careful here */
356 if (svp) 558 AV *av = (AV *)AvARRAY (padlist)[i--];
357 { 559 I32 j = AvFILLp (av);
358 SV *sv; 560
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 561 while (j >= 0)
562 SvREFCNT_dec (AvARRAY (av)[j--]);
563
564 AvFILLp (av) = -1;
360 SvREFCNT_dec (sv); 565 SvREFCNT_dec (av);
361
362 SvREFCNT_dec (*svp);
363 }
364 } 566 }
365 567
568 SvREFCNT_dec (AvARRAY (padlist)[0]);
569
570 AvFILLp (padlist) = -1;
366 SvREFCNT_dec ((SV*)padlist); 571 SvREFCNT_dec ((SV*)padlist);
367 } 572 }
368} 573}
369 574
370static int 575static int
371coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 576coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
372{ 577{
373 AV *padlist; 578 AV *padlist;
374 AV *av = (AV *)mg->mg_obj; 579 AV *av = (AV *)mg->mg_obj;
580
581 /* perl manages to free our internal AV and _then_ call us */
582 if (IN_DESTRUCT)
583 return 0;
375 584
376 /* casting is fun. */ 585 /* casting is fun. */
377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 586 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
378 free_padlist (aTHX_ padlist); 587 free_padlist (aTHX_ padlist);
379 588
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 589 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 590
382 return 0; 591 return 0;
383} 592}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 593
388static MGVTBL coro_cv_vtbl = { 594static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 595 0, 0, 0, 0,
390 coro_cv_free 596 coro_cv_free
391}; 597};
392 598
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441
442/* the next two functions merely cache the padlists */ 599/* the next two functions merely cache the padlists */
443static void 600ECB_INLINE void
444get_padlist (pTHX_ CV *cv) 601get_padlist (pTHX_ CV *cv)
445{ 602{
446 MAGIC *mg = CORO_MAGIC_cv (cv); 603 MAGIC *mg = CORO_MAGIC_cv (cv);
447 AV *av; 604 AV *av;
448 605
449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 606 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 607 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
451 else 608 else
452 { 609 {
453#if CORO_PREFER_PERL_FUNCTIONS 610#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 611 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 612 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 613 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 614 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 615 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 616 SvREFCNT_dec (cp);
460#else 617#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 618 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 619#endif
463 } 620 }
464} 621}
465 622
466static void 623ECB_INLINE void
467put_padlist (pTHX_ CV *cv) 624put_padlist (pTHX_ CV *cv)
468{ 625{
469 MAGIC *mg = CORO_MAGIC_cv (cv); 626 MAGIC *mg = CORO_MAGIC_cv (cv);
470 AV *av; 627 AV *av;
471 628
472 if (expect_false (!mg)) 629 if (ecb_expect_false (!mg))
473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 630 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
474 631
475 av = (AV *)mg->mg_obj; 632 av = (AV *)mg->mg_obj;
476 633
477 if (expect_false (AvFILLp (av) >= AvMAX (av))) 634 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1); 635 av_extend (av, AvFILLp (av) + 1);
479 636
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 637 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 638}
482 639
483/** load & save, init *******************************************************/ 640/** load & save, init *******************************************************/
641
642/* swap sv heads, at least logically */
643static void
644swap_svs (pTHX_ Coro__State c)
645{
646 int i;
647
648 for (i = 0; i <= AvFILLp (c->swap_sv); )
649 {
650 SV *a = AvARRAY (c->swap_sv)[i++];
651 SV *b = AvARRAY (c->swap_sv)[i++];
652
653 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
654 SV tmp;
655
656 /* swap sv_any */
657 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
658
659 /* swap sv_flags */
660 SvFLAGS (&tmp) = SvFLAGS (a);
661 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
662 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
663
664#if PERL_VERSION_ATLEAST (5,10,0)
665 /* perl 5.10 complicates this _quite_ a bit, but it also is
666 * much faster, so no quarrels here. alternatively, we could
667 * sv_upgrade to avoid this.
668 */
669 {
670 /* swap sv_u */
671 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
672
673 /* if SvANY points to the head, we need to adjust the pointers,
674 * as the pointer for a still points to b, and maybe vice versa.
675 */
676 #define svany_in_head(type) \
677 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
678
679 if (svany_in_head (SvTYPE (a)))
680 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
681
682 if (svany_in_head (SvTYPE (b)))
683 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
684 }
685#endif
686 }
687}
688
689#define SWAP_SVS(coro) \
690 if (ecb_expect_false ((coro)->swap_sv)) \
691 swap_svs (aTHX_ (coro))
692
693static void
694on_enterleave_call (pTHX_ SV *cb);
484 695
485static void 696static void
486load_perl (pTHX_ Coro__State c) 697load_perl (pTHX_ Coro__State c)
487{ 698{
488 perl_slots *slot = c->slot; 699 perl_slots *slot = c->slot;
489 c->slot = 0; 700 c->slot = 0;
490 701
491 PL_mainstack = c->mainstack; 702 PL_mainstack = c->mainstack;
492 703
493 GvSV (PL_defgv) = slot->defsv; 704#if CORO_JIT
494 GvAV (PL_defgv) = slot->defav; 705 load_perl_slots (slot);
495 GvSV (PL_errgv) = slot->errsv; 706#else
496 GvSV (irsgv) = slot->irsgv;
497
498 #define VAR(name,type) PL_ ## name = slot->name; 707 #define VARx(name,expr,type) expr = slot->name;
499 # include "state.h" 708 # include "state.h"
500 #undef VAR 709 #undef VARx
710#endif
501 711
502 { 712 {
503 dSP; 713 dSP;
504 714
505 CV *cv; 715 CV *cv;
506 716
507 /* now do the ugly restore mess */ 717 /* now do the ugly restore mess */
508 while (expect_true (cv = (CV *)POPs)) 718 while (ecb_expect_true (cv = (CV *)POPs))
509 { 719 {
510 put_padlist (aTHX_ cv); /* mark this padlist as available */ 720 put_padlist (aTHX_ cv); /* mark this padlist as available */
511 CvDEPTH (cv) = PTR2IV (POPs); 721 CvDEPTH (cv) = PTR2IV (POPs);
512 CvPADLIST (cv) = (AV *)POPs; 722 CvPADLIST (cv) = (AV *)POPs;
513 } 723 }
514 724
515 PUTBACK; 725 PUTBACK;
516 } 726 }
517 727
518 slf_frame = c->slf_frame; 728 slf_frame = c->slf_frame;
729 CORO_THROW = c->except;
730
731 if (ecb_expect_false (enable_times))
732 {
733 if (ecb_expect_false (!times_valid))
734 coro_times_update ();
735
736 coro_times_sub (c);
737 }
738
739 if (ecb_expect_false (c->on_enter))
740 {
741 int i;
742
743 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
744 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
745 }
746
747 SWAP_SVS (c);
519} 748}
520 749
521static void 750static void
522save_perl (pTHX_ Coro__State c) 751save_perl (pTHX_ Coro__State c)
523{ 752{
753 SWAP_SVS (c);
754
755 if (ecb_expect_false (c->on_leave))
756 {
757 int i;
758
759 for (i = AvFILLp (c->on_leave); i >= 0; --i)
760 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
761 }
762
763 times_valid = 0;
764
765 if (ecb_expect_false (enable_times))
766 {
767 coro_times_update (); times_valid = 1;
768 coro_times_add (c);
769 }
770
771 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 772 c->slf_frame = slf_frame;
525 773
526 { 774 {
527 dSP; 775 dSP;
528 I32 cxix = cxstack_ix; 776 I32 cxix = cxstack_ix;
… …
536 784
537 XPUSHs (Nullsv); 785 XPUSHs (Nullsv);
538 /* this loop was inspired by pp_caller */ 786 /* this loop was inspired by pp_caller */
539 for (;;) 787 for (;;)
540 { 788 {
541 while (expect_true (cxix >= 0)) 789 while (ecb_expect_true (cxix >= 0))
542 { 790 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 791 PERL_CONTEXT *cx = &ccstk[cxix--];
544 792
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 793 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 794 {
547 CV *cv = cx->blk_sub.cv; 795 CV *cv = cx->blk_sub.cv;
548 796
549 if (expect_true (CvDEPTH (cv))) 797 if (ecb_expect_true (CvDEPTH (cv)))
550 { 798 {
551 EXTEND (SP, 3); 799 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 800 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 801 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 802 PUSHs ((SV *)cv);
… …
557 get_padlist (aTHX_ cv); 805 get_padlist (aTHX_ cv);
558 } 806 }
559 } 807 }
560 } 808 }
561 809
562 if (expect_true (top_si->si_type == PERLSI_MAIN)) 810 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
563 break; 811 break;
564 812
565 top_si = top_si->si_prev; 813 top_si = top_si->si_prev;
566 ccstk = top_si->si_cxstack; 814 ccstk = top_si->si_cxstack;
567 cxix = top_si->si_cxix; 815 cxix = top_si->si_cxix;
… …
569 817
570 PUTBACK; 818 PUTBACK;
571 } 819 }
572 820
573 /* allocate some space on the context stack for our purposes */ 821 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */ 822 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 { 823 {
579 int i; 824 unsigned int i;
825
580 for (i = 3; i < SLOT_COUNT; ++i) 826 for (i = 0; i < SLOT_COUNT; ++i)
581 CXINC; 827 CXINC;
582 } 828
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 829 cxstack_ix -= SLOT_COUNT; /* undo allocation */
830 }
584 831
585 c->mainstack = PL_mainstack; 832 c->mainstack = PL_mainstack;
586 833
587 { 834 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 835 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 836
590 slot->defav = GvAV (PL_defgv); 837#if CORO_JIT
591 slot->defsv = DEFSV; 838 save_perl_slots (slot);
592 slot->errsv = ERRSV; 839#else
593 slot->irsgv = GvSV (irsgv);
594
595 #define VAR(name,type) slot->name = PL_ ## name; 840 #define VARx(name,expr,type) slot->name = expr;
596 # include "state.h" 841 # include "state.h"
597 #undef VAR 842 #undef VARx
843#endif
598 } 844 }
599} 845}
600 846
601/* 847/*
602 * allocate various perl stacks. This is almost an exact copy 848 * allocate various perl stacks. This is almost an exact copy
603 * of perl.c:init_stacks, except that it uses less memory 849 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 850 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 851 * not usually need a lot of stackspace.
606 */ 852 */
607#if CORO_PREFER_PERL_FUNCTIONS 853#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 854# define coro_init_stacks(thx) init_stacks ()
609#else 855#else
610static void 856static void
611coro_init_stacks (pTHX) 857coro_init_stacks (pTHX)
612{ 858{
613 PL_curstackinfo = new_stackinfo(32, 8); 859 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
614 PL_curstackinfo->si_type = PERLSI_MAIN; 860 PL_curstackinfo->si_type = PERLSI_MAIN;
615 PL_curstack = PL_curstackinfo->si_stack; 861 PL_curstack = PL_curstackinfo->si_stack;
616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 862 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
617 863
618 PL_stack_base = AvARRAY(PL_curstack); 864 PL_stack_base = AvARRAY(PL_curstack);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 922#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 923 Safefree (PL_retstack);
678#endif 924#endif
679} 925}
680 926
927#define CORO_RSS \
928 rss += sizeof (SYM (curstackinfo)); \
929 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
930 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
931 rss += SYM (tmps_max) * sizeof (SV *); \
932 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
933 rss += SYM (scopestack_max) * sizeof (I32); \
934 rss += SYM (savestack_max) * sizeof (ANY);
935
681static size_t 936static size_t
682coro_rss (pTHX_ struct coro *coro) 937coro_rss (pTHX_ struct coro *coro)
683{ 938{
684 size_t rss = sizeof (*coro); 939 size_t rss = sizeof (*coro);
685 940
686 if (coro->mainstack) 941 if (coro->mainstack)
687 { 942 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 943 if (coro->flags & CF_RUNNING)
692 { 944 {
693 slot = &tmp_slot; 945 #define SYM(sym) PL_ ## sym
694 946 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 947 #undef SYM
698 } 948 }
699 else 949 else
700 slot = coro->slot;
701
702 if (slot)
703 { 950 {
704 rss += sizeof (slot->curstackinfo); 951 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 952 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 953 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 954 }
716 } 955 }
717 956
718 return rss; 957 return rss;
719} 958}
… …
732#endif 971#endif
733 972
734/* 973/*
735 * This overrides the default magic get method of %SIG elements. 974 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 975 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 976 * and instead of trying to save and restore the hash elements (extremely slow),
738 * readback here. 977 * we just provide our own readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 978 */
743static int 979static int ecb_cold
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 980coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 981{
746 const char *s = MgPV_nolen_const (mg); 982 const char *s = MgPV_nolen_const (mg);
747 983
748 if (*s == '_') 984 if (*s == '_')
… …
760 } 996 }
761 997
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 998 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763} 999}
764 1000
765static int 1001static int ecb_cold
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1002coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{ 1003{
768 const char *s = MgPV_nolen_const (mg); 1004 const char *s = MgPV_nolen_const (mg);
769 1005
770 if (*s == '_') 1006 if (*s == '_')
… …
784 } 1020 }
785 1021
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1022 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787} 1023}
788 1024
789static int 1025static int ecb_cold
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1026coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{ 1027{
792 const char *s = MgPV_nolen_const (mg); 1028 const char *s = MgPV_nolen_const (mg);
793 1029
794 if (*s == '_') 1030 if (*s == '_')
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1035 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 1036
801 if (svp) 1037 if (svp)
802 { 1038 {
803 SV *old = *svp; 1039 SV *old = *svp;
804 *svp = newSVsv (sv); 1040 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1041 SvREFCNT_dec (old);
806 return 0; 1042 return 0;
807 } 1043 }
808 } 1044 }
809 1045
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1057slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1058{
823 return 0; 1059 return 0;
824} 1060}
825 1061
826static void 1062static int
1063slf_check_repeat (pTHX_ struct CoroSLF *frame)
1064{
1065 return 1;
1066}
1067
1068static UNOP init_perl_op;
1069
1070ecb_noinline static void /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 1071init_perl (pTHX_ struct coro *coro)
828{ 1072{
829 /* 1073 /*
830 * emulate part of the perl startup here. 1074 * emulate part of the perl startup here.
831 */ 1075 */
832 coro_init_stacks (aTHX); 1076 coro_init_stacks (aTHX);
833 1077
834 PL_runops = RUNOPS_DEFAULT; 1078 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 1079 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 1080 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 1081 PL_comppad = 0;
1082 PL_comppad_name = 0;
1083 PL_comppad_name_fill = 0;
1084 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 1085 PL_curpm = 0;
839 PL_curpad = 0; 1086 PL_curpad = 0;
840 PL_localizing = 0; 1087 PL_localizing = 0;
841 PL_dirty = 0;
842 PL_restartop = 0; 1088 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 1089#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 1090 PL_parser = 0;
845#endif 1091#endif
1092 PL_hints = 0;
846 1093
847 /* recreate the die/warn hooks */ 1094 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1095 PL_diehook = SvREFCNT_inc (rv_diehook);
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1096 PL_warnhook = SvREFCNT_inc (rv_warnhook);
850 1097
851 GvSV (PL_defgv) = newSV (0); 1098 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 1099 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 1100 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1101 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1102 GvHV (PL_hintgv) = 0;
855 PL_rs = newSVsv (GvSV (irsgv)); 1103 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1104 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 1105
858 { 1106 {
859 dSP; 1107 dSP;
860 UNOP myop; 1108 UNOP myop;
861 1109
862 Zero (&myop, 1, UNOP); 1110 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 1111 myop.op_next = Nullop;
1112 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 1113 myop.op_flags = OPf_WANT_VOID;
865 1114
866 PUSHMARK (SP); 1115 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1116 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 1117 PUTBACK;
869 PL_op = (OP *)&myop; 1118 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1119 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 1120 }
873 1121
874 /* this newly created coroutine might be run on an existing cctx which most 1122 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1123 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 1124 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1125 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1126 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
879} 1127 slf_frame.destroy = 0;
880 1128
1129 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1130 init_perl_op.op_next = PL_op;
1131 init_perl_op.op_type = OP_ENTERSUB;
1132 init_perl_op.op_ppaddr = pp_slf;
1133 /* no flags etc. required, as an init function won't be called */
1134
1135 PL_op = (OP *)&init_perl_op;
1136
1137 /* copy throw, in case it was set before init_perl */
1138 CORO_THROW = coro->except;
1139
1140 SWAP_SVS (coro);
1141
1142 if (ecb_expect_false (enable_times))
1143 {
1144 coro_times_update ();
1145 coro_times_sub (coro);
1146 }
1147}
1148
881static void 1149static void
882coro_destruct (pTHX_ struct coro *coro) 1150coro_unwind_stacks (pTHX)
883{ 1151{
884 if (!IN_DESTRUCT) 1152 if (!IN_DESTRUCT)
885 { 1153 {
886 /* restore all saved variables and stuff */ 1154 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 1155 LEAVE_SCOPE (0);
… …
895 POPSTACK_TO (PL_mainstack); 1163 POPSTACK_TO (PL_mainstack);
896 1164
897 /* unwind main stack */ 1165 /* unwind main stack */
898 dounwind (-1); 1166 dounwind (-1);
899 } 1167 }
1168}
900 1169
901 SvREFCNT_dec (GvSV (PL_defgv)); 1170static void
902 SvREFCNT_dec (GvAV (PL_defgv)); 1171destroy_perl (pTHX_ struct coro *coro)
903 SvREFCNT_dec (GvSV (PL_errgv)); 1172{
904 SvREFCNT_dec (PL_defoutgv); 1173 SV *svf [9];
905 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv));
907 1174
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910 1175 {
1176 SV *old_current = SvRV (coro_current);
1177 struct coro *current = SvSTATE (old_current);
1178
1179 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1180
1181 save_perl (aTHX_ current);
1182
1183 /* this will cause transfer_check to croak on block*/
1184 SvRV_set (coro_current, (SV *)coro->hv);
1185
1186 load_perl (aTHX_ coro);
1187
1188 coro_unwind_stacks (aTHX);
1189
1190 /* restore swapped sv's */
1191 SWAP_SVS (coro);
1192
1193 coro_destruct_stacks (aTHX);
1194
1195 /* now save some sv's to be free'd later */
1196 svf [0] = GvSV (PL_defgv);
1197 svf [1] = (SV *)GvAV (PL_defgv);
1198 svf [2] = GvSV (PL_errgv);
1199 svf [3] = (SV *)PL_defoutgv;
1200 svf [4] = PL_rs;
1201 svf [5] = GvSV (irsgv);
1202 svf [6] = (SV *)GvHV (PL_hintgv);
1203 svf [7] = PL_diehook;
1204 svf [8] = PL_warnhook;
1205 assert (9 == sizeof (svf) / sizeof (*svf));
1206
1207 SvRV_set (coro_current, old_current);
1208
1209 load_perl (aTHX_ current);
1210 }
1211
1212 {
1213 unsigned int i;
1214
1215 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1216 SvREFCNT_dec (svf [i]);
1217
911 SvREFCNT_dec (coro->saved_deffh); 1218 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 1219 SvREFCNT_dec (coro->rouse_cb);
913 1220 SvREFCNT_dec (coro->invoke_cb);
914 coro_destruct_stacks (aTHX); 1221 SvREFCNT_dec (coro->invoke_av);
1222 }
915} 1223}
916 1224
917INLINE void 1225ECB_INLINE void
918free_coro_mortal (pTHX) 1226free_coro_mortal (pTHX)
919{ 1227{
920 if (expect_true (coro_mortal)) 1228 if (ecb_expect_true (coro_mortal))
921 { 1229 {
922 SvREFCNT_dec (coro_mortal); 1230 SvREFCNT_dec ((SV *)coro_mortal);
923 coro_mortal = 0; 1231 coro_mortal = 0;
924 } 1232 }
925} 1233}
926 1234
927static int 1235static int
928runops_trace (pTHX) 1236runops_trace (pTHX)
929{ 1237{
930 COP *oldcop = 0; 1238 COP *oldcop = 0;
931 int oldcxix = -2; 1239 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 1240
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1241 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 1242 {
937 PERL_ASYNC_CHECK (); 1243 PERL_ASYNC_CHECK ();
938 1244
939 if (cctx->flags & CC_TRACE_ALL) 1245 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1246 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1247 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 1248 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1249 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1250 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1251 AV *av = newAV (); /* return values */
946 SV **cb; 1252 SV **cb;
… …
983 1289
984 if (PL_curcop != &PL_compiling) 1290 if (PL_curcop != &PL_compiling)
985 { 1291 {
986 SV **cb; 1292 SV **cb;
987 1293
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1294 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989 { 1295 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1296 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1297
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1298 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1299 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1300 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1301 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1302 SV *fullname = sv_2mortal (newSV (0));
998 1303
999 if (isGV (gv)) 1304 if (isGV (gv))
… …
1004 SAVETMPS; 1309 SAVETMPS;
1005 EXTEND (SP, 3); 1310 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1311 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1312 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1313 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1314 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1315 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1316 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1317 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1318 SPAGAIN;
1014 FREETMPS; 1319 FREETMPS;
… …
1017 } 1322 }
1018 1323
1019 oldcxix = cxstack_ix; 1324 oldcxix = cxstack_ix;
1020 } 1325 }
1021 1326
1022 if (cctx->flags & CC_TRACE_LINE) 1327 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1328 {
1024 dSP; 1329 dSP;
1025 1330
1026 PL_runops = RUNOPS_DEFAULT; 1331 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1332 ENTER;
… …
1046 1351
1047 TAINT_NOT; 1352 TAINT_NOT;
1048 return 0; 1353 return 0;
1049} 1354}
1050 1355
1356static struct CoroSLF cctx_ssl_frame;
1357
1051static void 1358static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1359slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1360{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1361 ta->prev = 0;
1056} 1362}
1057 1363
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1364static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1365slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
1062static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx)
1064{ 1366{
1065 dSP; 1367 *frame = cctx_ssl_frame;
1066 UNOP myop;
1067 1368
1369 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1370}
1371
1372/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1373static void ecb_noinline
1374cctx_prepare (pTHX)
1375{
1068 PL_top_env = &PL_start_env; 1376 PL_top_env = &PL_start_env;
1069 1377
1070 if (cctx->flags & CC_TRACE) 1378 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1379 PL_runops = runops_trace;
1072 1380
1073 Zero (&myop, 1, UNOP); 1381 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1382 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1383 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1384 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1385
1077 PUSHMARK (SP); 1386 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1387 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1388
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1389 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1390 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1391}
1086 1392
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1393/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1394ECB_INLINE void
1089transfer_tail (pTHX) 1395transfer_tail (pTHX)
1090{ 1396{
1091 free_coro_mortal (aTHX); 1397 free_coro_mortal (aTHX);
1092} 1398}
1093 1399
… …
1108 /* normally we would need to skip the entersub here */ 1414 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1415 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1416 /* PL_nop = PL_nop->op_next */
1111 1417
1112 /* inject a fake subroutine call to cctx_init */ 1418 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1419 cctx_prepare (aTHX);
1114 1420
1115 /* cctx_run is the alternative tail of transfer() */ 1421 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1422 transfer_tail (aTHX);
1117 1423
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1424 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1425 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1426 perl_run (PL_curinterp);
1427 /*
1428 * Unfortunately, there is no way to get at the return values of the
1429 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1430 * runtime errors here, as this is just a random interpreter, not a thread.
1431 */
1121 1432
1122 /* 1433 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1434 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1435 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1436 * reason for perl_run to return. We try to exit by jumping to the
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1437 * bootstrap-time "top" top_env, as we cannot restore the "main"
1127 * coroutine as Coro has no such concept 1438 * coroutine as Coro has no such concept.
1439 * This actually isn't valid with the pthread backend, but OSes requiring
1440 * that backend are too broken to do it in a standards-compliant way.
1128 */ 1441 */
1129 PL_top_env = main_top_env; 1442 PL_top_env = main_top_env;
1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1443 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 } 1444 }
1132} 1445}
1133 1446
1134static coro_cctx * 1447static coro_cctx *
1135cctx_new () 1448cctx_new (void)
1136{ 1449{
1137 coro_cctx *cctx; 1450 coro_cctx *cctx;
1138 1451
1139 ++cctx_count; 1452 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx); 1453 New (0, cctx, 1, coro_cctx);
… …
1146 return cctx; 1459 return cctx;
1147} 1460}
1148 1461
1149/* create a new cctx only suitable as source */ 1462/* create a new cctx only suitable as source */
1150static coro_cctx * 1463static coro_cctx *
1151cctx_new_empty () 1464cctx_new_empty (void)
1152{ 1465{
1153 coro_cctx *cctx = cctx_new (); 1466 coro_cctx *cctx = cctx_new ();
1154 1467
1155 cctx->sptr = 0; 1468 cctx->sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0); 1469 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1158 return cctx; 1471 return cctx;
1159} 1472}
1160 1473
1161/* create a new cctx suitable as destination/running a perl interpreter */ 1474/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx * 1475static coro_cctx *
1163cctx_new_run () 1476cctx_new_run (void)
1164{ 1477{
1165 coro_cctx *cctx = cctx_new (); 1478 coro_cctx *cctx = cctx_new ();
1166 void *stack_start; 1479 void *stack_start;
1167 size_t stack_size; 1480 size_t stack_size;
1168 1481
1169#if HAVE_MMAP 1482#if HAVE_MMAP
1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1483 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1171 /* mmap supposedly does allocate-on-write for us */ 1484 /* mmap supposedly does allocate-on-write for us */
1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1485 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1173 1486
1174 if (cctx->sptr != (void *)-1) 1487 if (cctx->sptr != (void *)-1)
1175 { 1488 {
1176 #if CORO_STACKGUARD 1489 #if CORO_STACKGUARD
1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1490 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1209cctx_destroy (coro_cctx *cctx) 1522cctx_destroy (coro_cctx *cctx)
1210{ 1523{
1211 if (!cctx) 1524 if (!cctx)
1212 return; 1525 return;
1213 1526
1527 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1528
1214 --cctx_count; 1529 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1530 coro_destroy (&cctx->cctx);
1216 1531
1217 /* coro_transfer creates new, empty cctx's */ 1532 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr) 1533 if (cctx->sptr)
… …
1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1551#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1237 1552
1238static coro_cctx * 1553static coro_cctx *
1239cctx_get (pTHX) 1554cctx_get (pTHX)
1240{ 1555{
1241 while (expect_true (cctx_first)) 1556 while (ecb_expect_true (cctx_first))
1242 { 1557 {
1243 coro_cctx *cctx = cctx_first; 1558 coro_cctx *cctx = cctx_first;
1244 cctx_first = cctx->next; 1559 cctx_first = cctx->next;
1245 --cctx_idle; 1560 --cctx_idle;
1246 1561
1247 if (expect_true (!CCTX_EXPIRED (cctx))) 1562 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1248 return cctx; 1563 return cctx;
1249 1564
1250 cctx_destroy (cctx); 1565 cctx_destroy (cctx);
1251 } 1566 }
1252 1567
… …
1257cctx_put (coro_cctx *cctx) 1572cctx_put (coro_cctx *cctx)
1258{ 1573{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1574 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260 1575
1261 /* free another cctx if overlimit */ 1576 /* free another cctx if overlimit */
1262 if (expect_false (cctx_idle >= cctx_max_idle)) 1577 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1263 { 1578 {
1264 coro_cctx *first = cctx_first; 1579 coro_cctx *first = cctx_first;
1265 cctx_first = first->next; 1580 cctx_first = first->next;
1266 --cctx_idle; 1581 --cctx_idle;
1267 1582
… …
1276/** coroutine switching *****************************************************/ 1591/** coroutine switching *****************************************************/
1277 1592
1278static void 1593static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1594transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1595{
1596 /* TODO: throwing up here is considered harmful */
1597
1281 if (expect_true (prev != next)) 1598 if (ecb_expect_true (prev != next))
1282 { 1599 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1600 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1601 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1285 1602
1286 if (expect_false (next->flags & CF_RUNNING)) 1603 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1604 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1291 1605
1292#if !PERL_VERSION_ATLEAST (5,10,0) 1606#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1607 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1608 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif 1609#endif
1296 } 1610 }
1297} 1611}
1298 1612
1299/* always use the TRANSFER macro */ 1613/* always use the TRANSFER macro */
1300static void NOINLINE 1614static void ecb_noinline /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1615transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1616{
1303 dSTACKLEVEL; 1617 dSTACKLEVEL;
1304 1618
1305 /* sometimes transfer is only called to set idle_sp */ 1619 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1620 if (ecb_expect_false (!prev))
1307 { 1621 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1622 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1623 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1624 }
1311 else if (expect_true (prev != next)) 1625 else if (ecb_expect_true (prev != next))
1312 { 1626 {
1313 coro_cctx *prev__cctx; 1627 coro_cctx *cctx_prev;
1314 1628
1315 if (expect_false (prev->flags & CF_NEW)) 1629 if (ecb_expect_false (prev->flags & CF_NEW))
1316 { 1630 {
1317 /* create a new empty/source context */ 1631 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1632 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1633 prev->flags |= CF_RUNNING;
1321 } 1634 }
1322 1635
1323 prev->flags &= ~CF_RUNNING; 1636 prev->flags &= ~CF_RUNNING;
1324 next->flags |= CF_RUNNING; 1637 next->flags |= CF_RUNNING;
1325 1638
1326 /* first get rid of the old state */ 1639 /* first get rid of the old state */
1327 save_perl (aTHX_ prev); 1640 save_perl (aTHX_ prev);
1328 1641
1329 if (expect_false (next->flags & CF_NEW)) 1642 if (ecb_expect_false (next->flags & CF_NEW))
1330 { 1643 {
1331 /* need to start coroutine */ 1644 /* need to start coroutine */
1332 next->flags &= ~CF_NEW; 1645 next->flags &= ~CF_NEW;
1333 /* setup coroutine call */ 1646 /* setup coroutine call */
1334 coro_setup (aTHX_ next); 1647 init_perl (aTHX_ next);
1335 } 1648 }
1336 else 1649 else
1337 load_perl (aTHX_ next); 1650 load_perl (aTHX_ next);
1338 1651
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */ 1652 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1653 if (ecb_expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1654 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1655 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1656 && !force_cctx
1346 )) 1657 ))
1347 { 1658 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1659 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1660 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1661
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1662 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1663 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1664 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1665 if (ecb_expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1666 next->cctx = cctx_get (aTHX);
1358 1667
1359 cctx_put (prev__cctx); 1668 cctx_put (cctx_current);
1360 } 1669 }
1670 else
1671 prev->cctx = cctx_current;
1361 1672
1362 ++next->usecount; 1673 ++next->usecount;
1363 1674
1364 if (expect_true (!next->cctx)) 1675 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1676 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1677
1367 if (expect_false (prev__cctx != next->cctx)) 1678 next->cctx = 0;
1679
1680 if (ecb_expect_false (cctx_prev != cctx_current))
1368 { 1681 {
1369 prev__cctx->top_env = PL_top_env; 1682 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1683 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1684 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1685 }
1373 1686
1374 transfer_tail (aTHX); 1687 transfer_tail (aTHX);
1375 } 1688 }
1376} 1689}
… …
1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1691#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1692#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1380 1693
1381/** high level stuff ********************************************************/ 1694/** high level stuff ********************************************************/
1382 1695
1696/* this function is actually Coro, not Coro::State, but we call it from here */
1697/* because it is convenient - but it hasn't been declared yet for that reason */
1383static int 1698static void
1699coro_call_on_destroy (pTHX_ struct coro *coro);
1700
1701static void
1384coro_state_destroy (pTHX_ struct coro *coro) 1702coro_state_destroy (pTHX_ struct coro *coro)
1385{ 1703{
1386 if (coro->flags & CF_DESTROYED) 1704 if (coro->flags & CF_ZOMBIE)
1387 return 0; 1705 return;
1388 1706
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro); 1707 slf_destroy (aTHX_ coro);
1391 1708
1392 coro->flags |= CF_DESTROYED; 1709 coro->flags |= CF_ZOMBIE;
1393 1710
1394 if (coro->flags & CF_READY) 1711 if (coro->flags & CF_READY)
1395 { 1712 {
1396 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1713 /* reduce nready, as destroying a ready coro effectively unreadies it */
1397 /* alternative: look through all ready queues and remove the coro */ 1714 /* alternative: look through all ready queues and remove the coro */
1398 --coro_nready; 1715 --coro_nready;
1399 } 1716 }
1400 else 1717 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1718 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1719
1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1404 {
1405 struct coro temp;
1406
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1408
1409 save_perl (aTHX_ &temp);
1410 load_perl (aTHX_ coro);
1411
1412 coro_destruct (aTHX_ coro);
1413
1414 load_perl (aTHX_ &temp);
1415
1416 coro->slot = 0;
1417 }
1418
1419 cctx_destroy (coro->cctx);
1420 SvREFCNT_dec (coro->args);
1421
1422 if (coro->next) coro->next->prev = coro->prev; 1720 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1721 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1722 if (coro == coro_first) coro_first = coro->next;
1425 1723
1426 return 1; 1724 if (coro->mainstack
1725 && coro->mainstack != main_mainstack
1726 && coro->slot
1727 && !PL_dirty)
1728 destroy_perl (aTHX_ coro);
1729
1730 cctx_destroy (coro->cctx);
1731 SvREFCNT_dec (coro->startcv);
1732 SvREFCNT_dec (coro->args);
1733 SvREFCNT_dec (coro->swap_sv);
1734 SvREFCNT_dec (CORO_THROW);
1735
1736 coro_call_on_destroy (aTHX_ coro);
1737
1738 /* more destruction mayhem in coro_state_free */
1427} 1739}
1428 1740
1429static int 1741static int
1430coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1742coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1431{ 1743{
1432 struct coro *coro = (struct coro *)mg->mg_ptr; 1744 struct coro *coro = (struct coro *)mg->mg_ptr;
1433 mg->mg_ptr = 0; 1745 mg->mg_ptr = 0;
1434 1746
1435 coro->hv = 0;
1436
1437 if (--coro->refcnt < 0)
1438 {
1439 coro_state_destroy (aTHX_ coro); 1747 coro_state_destroy (aTHX_ coro);
1748 SvREFCNT_dec (coro->on_destroy);
1749 SvREFCNT_dec (coro->status);
1750
1440 Safefree (coro); 1751 Safefree (coro);
1441 }
1442 1752
1443 return 0; 1753 return 0;
1444} 1754}
1445 1755
1446static int 1756static int ecb_cold
1447coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1757coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1448{ 1758{
1449 struct coro *coro = (struct coro *)mg->mg_ptr; 1759 /* called when perl clones the current process the slow way (windows process emulation) */
1450 1760 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1451 ++coro->refcnt; 1761 mg->mg_ptr = 0;
1762 mg->mg_virtual = 0;
1452 1763
1453 return 0; 1764 return 0;
1454} 1765}
1455 1766
1456static MGVTBL coro_state_vtbl = { 1767static MGVTBL coro_state_vtbl = {
… …
1481 TRANSFER (ta, 1); 1792 TRANSFER (ta, 1);
1482} 1793}
1483 1794
1484/** Coro ********************************************************************/ 1795/** Coro ********************************************************************/
1485 1796
1486INLINE void 1797ECB_INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1798coro_enq (pTHX_ struct coro *coro)
1488{ 1799{
1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1800 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1490}
1491 1801
1492INLINE SV * 1802 SvREFCNT_inc_NN (coro->hv);
1803
1804 coro->next_ready = 0;
1805 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1806 ready [1] = coro;
1807}
1808
1809ECB_INLINE struct coro *
1493coro_deq (pTHX) 1810coro_deq (pTHX)
1494{ 1811{
1495 int prio; 1812 int prio;
1496 1813
1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1814 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1498 if (AvFILLp (coro_ready [prio]) >= 0) 1815 {
1499 return av_shift (coro_ready [prio]); 1816 struct coro **ready = coro_ready [prio];
1817
1818 if (ready [0])
1819 {
1820 struct coro *coro = ready [0];
1821 ready [0] = coro->next_ready;
1822 return coro;
1823 }
1824 }
1500 1825
1501 return 0; 1826 return 0;
1827}
1828
1829static void
1830invoke_sv_ready_hook_helper (void)
1831{
1832 dTHX;
1833 dSP;
1834
1835 ENTER;
1836 SAVETMPS;
1837
1838 PUSHMARK (SP);
1839 PUTBACK;
1840 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1841
1842 FREETMPS;
1843 LEAVE;
1502} 1844}
1503 1845
1504static int 1846static int
1505api_ready (pTHX_ SV *coro_sv) 1847api_ready (pTHX_ SV *coro_sv)
1506{ 1848{
1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1510
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1849 struct coro *coro = SvSTATE (coro_sv);
1515 1850
1516 if (coro->flags & CF_READY) 1851 if (coro->flags & CF_READY)
1517 return 0; 1852 return 0;
1518 1853
1519 coro->flags |= CF_READY; 1854 coro->flags |= CF_READY;
1520 1855
1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro); 1856 coro_enq (aTHX_ coro);
1525 ++coro_nready;
1526 1857
1527 if (sv_hook) 1858 if (!coro_nready++)
1528 { 1859 if (coroapi.readyhook)
1529 dSP; 1860 coroapi.readyhook ();
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1545 1861
1546 return 1; 1862 return 1;
1547} 1863}
1548 1864
1549static int 1865static int
1550api_is_ready (pTHX_ SV *coro_sv) 1866api_is_ready (pTHX_ SV *coro_sv)
1551{ 1867{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1868 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1869}
1554 1870
1871/* expects to own a reference to next->hv */
1555INLINE void 1872ECB_INLINE void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1873prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1874{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1875 SV *prev_sv = SvRV (coro_current);
1876
1598 ta->prev = SvSTATE_hv (prev_sv); 1877 ta->prev = SvSTATE_hv (prev_sv);
1878 ta->next = next;
1879
1599 TRANSFER_CHECK (*ta); 1880 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1881
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1882 SvRV_set (coro_current, (SV *)next->hv);
1603 1883
1604 free_coro_mortal (aTHX); 1884 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1885 coro_mortal = prev_sv;
1606} 1886}
1607 1887
1888static void
1889prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1890{
1891 for (;;)
1892 {
1893 struct coro *next = coro_deq (aTHX);
1894
1895 if (ecb_expect_true (next))
1896 {
1897 /* cannot transfer to destroyed coros, skip and look for next */
1898 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1899 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1900 else
1901 {
1902 next->flags &= ~CF_READY;
1903 --coro_nready;
1904
1905 prepare_schedule_to (aTHX_ ta, next);
1906 break;
1907 }
1908 }
1909 else
1910 {
1911 /* nothing to schedule: call the idle handler */
1912 if (SvROK (sv_idle)
1913 && SvOBJECT (SvRV (sv_idle)))
1914 {
1915 if (SvRV (sv_idle) == SvRV (coro_current))
1916 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1917
1918 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1919 api_ready (aTHX_ SvRV (sv_idle));
1920 --coro_nready;
1921 }
1922 else
1923 {
1924 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1925 dSP;
1926
1927 ENTER;
1928 SAVETMPS;
1929
1930 PUSHMARK (SP);
1931 PUTBACK;
1932 call_sv (sv_idle, G_VOID | G_DISCARD);
1933
1934 FREETMPS;
1935 LEAVE;
1936 }
1937 }
1938 }
1939}
1940
1608INLINE void 1941ECB_INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1942prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1943{
1611 api_ready (aTHX_ coro_current); 1944 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 1945 prepare_schedule (aTHX_ ta);
1613} 1946}
1614 1947
1615INLINE void 1948ECB_INLINE void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1949prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{ 1950{
1618 SV *prev = SvRV (coro_current); 1951 SV *prev = SvRV (coro_current);
1619 1952
1620 if (coro_nready) 1953 if (coro_nready)
… …
1633 1966
1634 prepare_schedule (aTHX_ &ta); 1967 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1968 TRANSFER (ta, 1);
1636} 1969}
1637 1970
1971static void
1972api_schedule_to (pTHX_ SV *coro_sv)
1973{
1974 struct coro_transfer_args ta;
1975 struct coro *next = SvSTATE (coro_sv);
1976
1977 SvREFCNT_inc_NN (coro_sv);
1978 prepare_schedule_to (aTHX_ &ta, next);
1979}
1980
1638static int 1981static int
1639api_cede (pTHX) 1982api_cede (pTHX)
1640{ 1983{
1641 struct coro_transfer_args ta; 1984 struct coro_transfer_args ta;
1642 1985
1643 prepare_cede (aTHX_ &ta); 1986 prepare_cede (aTHX_ &ta);
1644 1987
1645 if (expect_true (ta.prev != ta.next)) 1988 if (ecb_expect_true (ta.prev != ta.next))
1646 { 1989 {
1647 TRANSFER (ta, 1); 1990 TRANSFER (ta, 1);
1648 return 1; 1991 return 1;
1649 } 1992 }
1650 else 1993 else
… …
1669static void 2012static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 2013api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 2014{
1672 struct coro *coro = SvSTATE (coro_sv); 2015 struct coro *coro = SvSTATE (coro_sv);
1673 2016
2017 if (coro->flags & CF_RUNNING)
2018 croak ("cannot enable tracing on a running coroutine, caught");
2019
1674 if (flags & CC_TRACE) 2020 if (flags & CC_TRACE)
1675 { 2021 {
1676 if (!coro->cctx) 2022 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 2023 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 2024 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 2025 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 2026
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2027 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 2028 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2029 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 2030 {
… …
1689 else 2035 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 2036 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 2037 }
1692} 2038}
1693 2039
2040static void
2041coro_push_av (pTHX_ AV *av, I32 gimme_v)
2042{
2043 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2044 {
2045 dSP;
2046
2047 if (gimme_v == G_SCALAR)
2048 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2049 else
2050 {
2051 int i;
2052 EXTEND (SP, AvFILLp (av) + 1);
2053
2054 for (i = 0; i <= AvFILLp (av); ++i)
2055 PUSHs (AvARRAY (av)[i]);
2056 }
2057
2058 PUTBACK;
2059 }
2060}
2061
2062static void
2063coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2064{
2065 if (!coro->on_destroy)
2066 coro->on_destroy = newAV ();
2067
2068 av_push (coro->on_destroy, cb);
2069}
2070
2071static void
2072slf_destroy_join (pTHX_ struct CoroSLF *frame)
2073{
2074 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2075}
2076
2077static int
2078slf_check_join (pTHX_ struct CoroSLF *frame)
2079{
2080 struct coro *coro = (struct coro *)frame->data;
2081
2082 if (!coro->status)
2083 return 1;
2084
2085 frame->destroy = 0;
2086
2087 coro_push_av (aTHX_ coro->status, GIMME_V);
2088
2089 SvREFCNT_dec ((SV *)coro->hv);
2090
2091 return 0;
2092}
2093
2094static void
2095slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2098
2099 if (items > 1)
2100 croak ("join called with too many arguments");
2101
2102 if (coro->status)
2103 frame->prepare = prepare_nop;
2104 else
2105 {
2106 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2107 frame->prepare = prepare_schedule;
2108 }
2109
2110 frame->check = slf_check_join;
2111 frame->destroy = slf_destroy_join;
2112 frame->data = (void *)coro;
2113 SvREFCNT_inc (coro->hv);
2114}
2115
2116static void
2117coro_call_on_destroy (pTHX_ struct coro *coro)
2118{
2119 AV *od = coro->on_destroy;
2120
2121 if (!od)
2122 return;
2123
2124 while (AvFILLp (od) >= 0)
2125 {
2126 SV *cb = sv_2mortal (av_pop (od));
2127
2128 /* coro hv's (and only hv's at the moment) are supported as well */
2129 if (SvSTATEhv_p (aTHX_ cb))
2130 api_ready (aTHX_ cb);
2131 else
2132 {
2133 dSP; /* don't disturb outer sp */
2134 PUSHMARK (SP);
2135
2136 if (coro->status)
2137 {
2138 PUTBACK;
2139 coro_push_av (aTHX_ coro->status, G_ARRAY);
2140 SPAGAIN;
2141 }
2142
2143 PUTBACK;
2144 call_sv (cb, G_VOID | G_DISCARD);
2145 }
2146 }
2147}
2148
2149static void
2150coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2151{
2152 AV *av;
2153
2154 if (coro->status)
2155 {
2156 av = coro->status;
2157 av_clear (av);
2158 }
2159 else
2160 av = coro->status = newAV ();
2161
2162 /* items are actually not so common, so optimise for this case */
2163 if (items)
2164 {
2165 int i;
2166
2167 av_extend (av, items - 1);
2168
2169 for (i = 0; i < items; ++i)
2170 av_push (av, SvREFCNT_inc_NN (arg [i]));
2171 }
2172}
2173
2174static void
2175slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2176{
2177 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2178 api_ready (aTHX_ sv_manager);
2179
2180 frame->prepare = prepare_schedule;
2181 frame->check = slf_check_repeat;
2182
2183 /* as a minor optimisation, we could unwind all stacks here */
2184 /* but that puts extra pressure on pp_slf, and is not worth much */
2185 /*coro_unwind_stacks (aTHX);*/
2186}
2187
2188static void
2189slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2190{
2191 HV *coro_hv = (HV *)SvRV (coro_current);
2192
2193 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2194 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2195}
2196
2197static void
2198slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2199{
2200 HV *coro_hv;
2201 struct coro *coro;
2202
2203 if (items <= 0)
2204 croak ("Coro::cancel called without coro object,");
2205
2206 coro = SvSTATE (arg [0]);
2207 coro_hv = coro->hv;
2208
2209 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2210
2211 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2212 {
2213 /* coro currently busy cancelling something, so just notify it */
2214 coro->slf_frame.data = (void *)coro;
2215
2216 frame->prepare = prepare_nop;
2217 frame->check = slf_check_nop;
2218 }
2219 else if (coro_hv == (HV *)SvRV (coro_current))
2220 {
2221 /* cancelling the current coro is allowed, and equals terminate */
2222 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2223 }
2224 else
2225 {
2226 struct coro *self = SvSTATE_current;
2227
2228 /* otherwise we cancel directly, purely for speed reasons
2229 * unfortunately, this requires some magic trickery, as
2230 * somebody else could cancel us, so we have to fight the cancellation.
2231 * this is ugly, and hopefully fully worth the extra speed.
2232 * besides, I can't get the slow-but-safe version working...
2233 */
2234 slf_frame.data = 0;
2235 self->flags |= CF_NOCANCEL;
2236 coro_state_destroy (aTHX_ coro);
2237 self->flags &= ~CF_NOCANCEL;
2238
2239 if (slf_frame.data)
2240 {
2241 /* while we were busy we have been cancelled, so terminate */
2242 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2243 }
2244 else
2245 {
2246 frame->prepare = prepare_nop;
2247 frame->check = slf_check_nop;
2248 }
2249 }
2250}
2251
2252static int
2253slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2254{
2255 frame->prepare = 0;
2256 coro_unwind_stacks (aTHX);
2257
2258 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2259
2260 return 1;
2261}
2262
2263static int
2264safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2265{
2266 if (coro->cctx)
2267 croak ("coro inside C callback, unable to cancel at this time, caught");
2268
2269 if (coro->flags & CF_NEW)
2270 {
2271 coro_set_status (aTHX_ coro, arg, items);
2272 coro_state_destroy (aTHX_ coro);
2273 }
2274 else
2275 {
2276 if (!coro->slf_frame.prepare)
2277 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2278
2279 slf_destroy (aTHX_ coro);
2280
2281 coro_set_status (aTHX_ coro, arg, items);
2282 coro->slf_frame.prepare = prepare_nop;
2283 coro->slf_frame.check = slf_check_safe_cancel;
2284
2285 api_ready (aTHX_ (SV *)coro->hv);
2286 }
2287
2288 return 1;
2289}
2290
2291/*****************************************************************************/
2292/* async pool handler */
2293
2294static int
2295slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2296{
2297 HV *hv = (HV *)SvRV (coro_current);
2298 struct coro *coro = (struct coro *)frame->data;
2299
2300 if (!coro->invoke_cb)
2301 return 1; /* loop till we have invoke */
2302 else
2303 {
2304 hv_store (hv, "desc", sizeof ("desc") - 1,
2305 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2306
2307 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2308
2309 {
2310 dSP;
2311 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2312 PUTBACK;
2313 }
2314
2315 SvREFCNT_dec (GvAV (PL_defgv));
2316 GvAV (PL_defgv) = coro->invoke_av;
2317 coro->invoke_av = 0;
2318
2319 return 0;
2320 }
2321}
2322
2323static void
2324slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2325{
2326 HV *hv = (HV *)SvRV (coro_current);
2327 struct coro *coro = SvSTATE_hv ((SV *)hv);
2328
2329 if (ecb_expect_true (coro->saved_deffh))
2330 {
2331 /* subsequent iteration */
2332 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2333 coro->saved_deffh = 0;
2334
2335 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2336 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2337 {
2338 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2339 return;
2340 }
2341 else
2342 {
2343 av_clear (GvAV (PL_defgv));
2344 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2345
2346 coro->prio = 0;
2347
2348 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2349 api_trace (aTHX_ coro_current, 0);
2350
2351 frame->prepare = prepare_schedule;
2352 av_push (av_async_pool, SvREFCNT_inc (hv));
2353 }
2354 }
2355 else
2356 {
2357 /* first iteration, simply fall through */
2358 frame->prepare = prepare_nop;
2359 }
2360
2361 frame->check = slf_check_pool_handler;
2362 frame->data = (void *)coro;
2363}
2364
2365/*****************************************************************************/
2366/* rouse callback */
2367
2368#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2369
2370static void
2371coro_rouse_callback (pTHX_ CV *cv)
2372{
2373 dXSARGS;
2374 SV *data = (SV *)S_GENSUB_ARG;
2375
2376 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2377 {
2378 /* first call, set args */
2379 SV *coro = SvRV (data);
2380 AV *av = newAV ();
2381
2382 SvRV_set (data, (SV *)av);
2383
2384 /* better take a full copy of the arguments */
2385 while (items--)
2386 av_store (av, items, newSVsv (ST (items)));
2387
2388 api_ready (aTHX_ coro);
2389 SvREFCNT_dec (coro);
2390 }
2391
2392 XSRETURN_EMPTY;
2393}
2394
2395static int
2396slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2397{
2398 SV *data = (SV *)frame->data;
2399
2400 if (CORO_THROW)
2401 return 0;
2402
2403 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2404 return 1;
2405
2406 /* now push all results on the stack */
2407 {
2408 dSP;
2409 AV *av = (AV *)SvRV (data);
2410 int i;
2411
2412 EXTEND (SP, AvFILLp (av) + 1);
2413 for (i = 0; i <= AvFILLp (av); ++i)
2414 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2415
2416 /* we have stolen the elements, so set length to zero and free */
2417 AvFILLp (av) = -1;
2418 av_undef (av);
2419
2420 PUTBACK;
2421 }
2422
2423 return 0;
2424}
2425
2426static void
2427slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2428{
2429 SV *cb;
2430
2431 if (items)
2432 cb = arg [0];
2433 else
2434 {
2435 struct coro *coro = SvSTATE_current;
2436
2437 if (!coro->rouse_cb)
2438 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2439
2440 cb = sv_2mortal (coro->rouse_cb);
2441 coro->rouse_cb = 0;
2442 }
2443
2444 if (!SvROK (cb)
2445 || SvTYPE (SvRV (cb)) != SVt_PVCV
2446 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2447 croak ("Coro::rouse_wait called with illegal callback argument,");
2448
2449 {
2450 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2451 SV *data = (SV *)S_GENSUB_ARG;
2452
2453 frame->data = (void *)data;
2454 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2455 frame->check = slf_check_rouse_wait;
2456 }
2457}
2458
2459static SV *
2460coro_new_rouse_cb (pTHX)
2461{
2462 HV *hv = (HV *)SvRV (coro_current);
2463 struct coro *coro = SvSTATE_hv (hv);
2464 SV *data = newRV_inc ((SV *)hv);
2465 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2466
2467 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2468 SvREFCNT_dec (data); /* magicext increases the refcount */
2469
2470 SvREFCNT_dec (coro->rouse_cb);
2471 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2472
2473 return cb;
2474}
2475
2476/*****************************************************************************/
2477/* schedule-like-function opcode (SLF) */
2478
2479static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2480static const CV *slf_cv;
2481static SV **slf_argv;
2482static int slf_argc, slf_arga; /* count, allocated */
2483static I32 slf_ax; /* top of stack, for restore */
2484
2485/* this restores the stack in the case we patched the entersub, to */
2486/* recreate the stack frame as perl will on following calls */
2487/* since entersub cleared the stack */
2488static OP *
2489pp_restore (pTHX)
2490{
2491 int i;
2492 SV **SP = PL_stack_base + slf_ax;
2493
2494 PUSHMARK (SP);
2495
2496 EXTEND (SP, slf_argc + 1);
2497
2498 for (i = 0; i < slf_argc; ++i)
2499 PUSHs (sv_2mortal (slf_argv [i]));
2500
2501 PUSHs ((SV *)CvGV (slf_cv));
2502
2503 RETURNOP (slf_restore.op_first);
2504}
2505
2506static void
2507slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2508{
2509 SV **arg = (SV **)slf_frame.data;
2510
2511 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2512}
2513
2514static void
2515slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2516{
2517 if (items != 2)
2518 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2519
2520 frame->prepare = slf_prepare_transfer;
2521 frame->check = slf_check_nop;
2522 frame->data = (void *)arg; /* let's hope it will stay valid */
2523}
2524
2525static void
2526slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2527{
2528 frame->prepare = prepare_schedule;
2529 frame->check = slf_check_nop;
2530}
2531
2532static void
2533slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2534{
2535 struct coro *next = (struct coro *)slf_frame.data;
2536
2537 SvREFCNT_inc_NN (next->hv);
2538 prepare_schedule_to (aTHX_ ta, next);
2539}
2540
2541static void
2542slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2543{
2544 if (!items)
2545 croak ("Coro::schedule_to expects a coroutine argument, caught");
2546
2547 frame->data = (void *)SvSTATE (arg [0]);
2548 frame->prepare = slf_prepare_schedule_to;
2549 frame->check = slf_check_nop;
2550}
2551
2552static void
2553slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2554{
2555 api_ready (aTHX_ SvRV (coro_current));
2556
2557 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2558}
2559
2560static void
2561slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2562{
2563 frame->prepare = prepare_cede;
2564 frame->check = slf_check_nop;
2565}
2566
2567static void
2568slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2569{
2570 frame->prepare = prepare_cede_notself;
2571 frame->check = slf_check_nop;
2572}
2573
2574/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2575static void
2576slf_destroy (pTHX_ struct coro *coro)
2577{
2578 /* this callback is reserved for slf functions needing to do cleanup */
2579 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2580 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2581
2582 /*
2583 * The on_destroy above most likely is from an SLF call.
2584 * Since by definition the SLF call will not finish when we destroy
2585 * the coro, we will have to force-finish it here, otherwise
2586 * cleanup functions cannot call SLF functions.
2587 */
2588 coro->slf_frame.prepare = 0;
2589}
2590
2591/*
2592 * these not obviously related functions are all rolled into one
2593 * function to increase chances that they all will call transfer with the same
2594 * stack offset
2595 * SLF stands for "schedule-like-function".
2596 */
2597static OP *
2598pp_slf (pTHX)
2599{
2600 I32 checkmark; /* mark SP to see how many elements check has pushed */
2601
2602 /* set up the slf frame, unless it has already been set-up */
2603 /* the latter happens when a new coro has been started */
2604 /* or when a new cctx was attached to an existing coroutine */
2605 if (ecb_expect_true (!slf_frame.prepare))
2606 {
2607 /* first iteration */
2608 dSP;
2609 SV **arg = PL_stack_base + TOPMARK + 1;
2610 int items = SP - arg; /* args without function object */
2611 SV *gv = *sp;
2612
2613 /* do a quick consistency check on the "function" object, and if it isn't */
2614 /* for us, divert to the real entersub */
2615 if (SvTYPE (gv) != SVt_PVGV
2616 || !GvCV (gv)
2617 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2618 return PL_ppaddr[OP_ENTERSUB](aTHX);
2619
2620 if (!(PL_op->op_flags & OPf_STACKED))
2621 {
2622 /* ampersand-form of call, use @_ instead of stack */
2623 AV *av = GvAV (PL_defgv);
2624 arg = AvARRAY (av);
2625 items = AvFILLp (av) + 1;
2626 }
2627
2628 /* now call the init function, which needs to set up slf_frame */
2629 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2630 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2631
2632 /* pop args */
2633 SP = PL_stack_base + POPMARK;
2634
2635 PUTBACK;
2636 }
2637
2638 /* now that we have a slf_frame, interpret it! */
2639 /* we use a callback system not to make the code needlessly */
2640 /* complicated, but so we can run multiple perl coros from one cctx */
2641
2642 do
2643 {
2644 struct coro_transfer_args ta;
2645
2646 slf_frame.prepare (aTHX_ &ta);
2647 TRANSFER (ta, 0);
2648
2649 checkmark = PL_stack_sp - PL_stack_base;
2650 }
2651 while (slf_frame.check (aTHX_ &slf_frame));
2652
2653 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2654
2655 /* exception handling */
2656 if (ecb_expect_false (CORO_THROW))
2657 {
2658 SV *exception = sv_2mortal (CORO_THROW);
2659
2660 CORO_THROW = 0;
2661 sv_setsv (ERRSV, exception);
2662 croak (0);
2663 }
2664
2665 /* return value handling - mostly like entersub */
2666 /* make sure we put something on the stack in scalar context */
2667 if (GIMME_V == G_SCALAR
2668 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2669 {
2670 dSP;
2671 SV **bot = PL_stack_base + checkmark;
2672
2673 if (sp == bot) /* too few, push undef */
2674 bot [1] = &PL_sv_undef;
2675 else /* too many, take last one */
2676 bot [1] = *sp;
2677
2678 SP = bot + 1;
2679
2680 PUTBACK;
2681 }
2682
2683 return NORMAL;
2684}
2685
2686static void
2687api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2688{
2689 int i;
2690 SV **arg = PL_stack_base + ax;
2691 int items = PL_stack_sp - arg + 1;
2692
2693 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2694
2695 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2696 && PL_op->op_ppaddr != pp_slf)
2697 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2698
2699 CvFLAGS (cv) |= CVf_SLF;
2700 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2701 slf_cv = cv;
2702
2703 /* we patch the op, and then re-run the whole call */
2704 /* we have to put the same argument on the stack for this to work */
2705 /* and this will be done by pp_restore */
2706 slf_restore.op_next = (OP *)&slf_restore;
2707 slf_restore.op_type = OP_CUSTOM;
2708 slf_restore.op_ppaddr = pp_restore;
2709 slf_restore.op_first = PL_op;
2710
2711 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2712
2713 if (PL_op->op_flags & OPf_STACKED)
2714 {
2715 if (items > slf_arga)
2716 {
2717 slf_arga = items;
2718 Safefree (slf_argv);
2719 New (0, slf_argv, slf_arga, SV *);
2720 }
2721
2722 slf_argc = items;
2723
2724 for (i = 0; i < items; ++i)
2725 slf_argv [i] = SvREFCNT_inc (arg [i]);
2726 }
2727 else
2728 slf_argc = 0;
2729
2730 PL_op->op_ppaddr = pp_slf;
2731 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2732
2733 PL_op = (OP *)&slf_restore;
2734}
2735
2736/*****************************************************************************/
2737/* dynamic wind */
2738
2739static void
2740on_enterleave_call (pTHX_ SV *cb)
2741{
2742 dSP;
2743
2744 PUSHSTACK;
2745
2746 PUSHMARK (SP);
2747 PUTBACK;
2748 call_sv (cb, G_VOID | G_DISCARD);
2749 SPAGAIN;
2750
2751 POPSTACK;
2752}
2753
2754static SV *
2755coro_avp_pop_and_free (pTHX_ AV **avp)
2756{
2757 AV *av = *avp;
2758 SV *res = av_pop (av);
2759
2760 if (AvFILLp (av) < 0)
2761 {
2762 *avp = 0;
2763 SvREFCNT_dec (av);
2764 }
2765
2766 return res;
2767}
2768
2769static void
2770coro_pop_on_enter (pTHX_ void *coro)
2771{
2772 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2773 SvREFCNT_dec (cb);
2774}
2775
2776static void
2777coro_pop_on_leave (pTHX_ void *coro)
2778{
2779 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2780 on_enterleave_call (aTHX_ sv_2mortal (cb));
2781}
2782
1694/*****************************************************************************/ 2783/*****************************************************************************/
1695/* PerlIO::cede */ 2784/* PerlIO::cede */
1696 2785
1697typedef struct 2786typedef struct
1698{ 2787{
1699 PerlIOBuf base; 2788 PerlIOBuf base;
1700 NV next, every; 2789 NV next, every;
1701} PerlIOCede; 2790} PerlIOCede;
1702 2791
1703static IV 2792static IV ecb_cold
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2793PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{ 2794{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707 2796
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2797 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every; 2798 self->next = nvtime () + self->every;
1710 2799
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2800 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712} 2801}
1713 2802
1714static SV * 2803static SV * ecb_cold
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2804PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{ 2805{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2806 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718 2807
1719 return newSVnv (self->every); 2808 return newSVnv (self->every);
… …
1765 PerlIOBuf_get_cnt, 2854 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2855 PerlIOBuf_set_ptrcnt,
1767}; 2856};
1768 2857
1769/*****************************************************************************/ 2858/*****************************************************************************/
2859/* Coro::Semaphore & Coro::Signal */
1770 2860
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2861static SV *
1782pp_restore (pTHX) 2862coro_waitarray_new (pTHX_ int count)
1783{ 2863{
1784 SV **SP = PL_stack_base + slf_ax; 2864 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2865 AV *av = newAV ();
2866 SV **ary;
1785 2867
1786 PUSHMARK (SP); 2868 /* unfortunately, building manually saves memory */
1787 2869 Newx (ary, 2, SV *);
1788 EXTEND (SP, 3); 2870 AvALLOC (av) = ary;
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2871#if PERL_VERSION_ATLEAST (5,10,0)
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); 2872 AvARRAY (av) = ary;
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); 2873#else
1792 PUSHs ((SV *)CvGV (slf_cv)); 2874 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
1793 2875 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
1794 RETURNOP (slf_restore.op_first); 2876 SvPVX ((SV *)av) = (char *)ary;
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif 2877#endif
2878 AvMAX (av) = 1;
2879 AvFILLp (av) = 0;
2880 ary [0] = newSViv (count);
1978 2881
1979 CvFLAGS (cv) |= CVf_SLF; 2882 return newRV_noinc ((SV *)av);
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000} 2883}
2001 2884
2002/*****************************************************************************/ 2885/* semaphore */
2003 2886
2004static void 2887static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2888coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2889{
2007 SV *count_sv = AvARRAY (av)[0]; 2890 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2902 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2903 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2904 cb = av_shift (av);
2022 2905
2023 if (SvOBJECT (cb)) 2906 if (SvOBJECT (cb))
2907 {
2024 api_ready (aTHX_ cb); 2908 api_ready (aTHX_ cb);
2025 else 2909 --count;
2026 croak ("callbacks not yet supported"); 2910 }
2911 else if (SvTYPE (cb) == SVt_PVCV)
2912 {
2913 dSP;
2914 PUSHMARK (SP);
2915 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2916 PUTBACK;
2917 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2918 }
2027 2919
2028 SvREFCNT_dec (cb); 2920 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2921 }
2032} 2922}
2033 2923
2034static void 2924static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2925coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2036{ 2926{
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2927 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2928 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2039} 2929}
2040 2930
2041static int 2931static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2932slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2933{
2044 AV *av = (AV *)frame->data; 2934 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2935 SV *count_sv = AvARRAY (av)[0];
2936 SV *coro_hv = SvRV (coro_current);
2046 2937
2938 /* if we are about to throw, don't actually acquire the lock, just throw */
2939 if (CORO_THROW)
2940 return 0;
2047 if (SvIVX (count_sv) > 0) 2941 else if (SvIVX (count_sv) > 0)
2048 { 2942 {
2049 SvSTATE_current->on_destroy = 0; 2943 frame->destroy = 0;
2944
2945 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2946 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2947 else
2948 coro_semaphore_adjust (aTHX_ av, 0);
2949
2051 return 0; 2950 return 0;
2052 } 2951 }
2053 else 2952 else
2054 { 2953 {
2055 int i; 2954 int i;
2056 /* if we were woken up but can't down, we look through the whole */ 2955 /* if we were woken up but can't down, we look through the whole */
2057 /* waiters list and only add us if we aren't in there already */ 2956 /* waiters list and only add us if we aren't in there already */
2058 /* this avoids some degenerate memory usage cases */ 2957 /* this avoids some degenerate memory usage cases */
2059 2958 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2060 for (i = 1; i <= AvFILLp (av); ++i)
2061 if (AvARRAY (av)[i] == SvRV (coro_current)) 2959 if (AvARRAY (av)[i] == coro_hv)
2062 return 1; 2960 return 1;
2063 2961
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2962 av_push (av, SvREFCNT_inc (coro_hv));
2065 return 1; 2963 return 1;
2066 } 2964 }
2067} 2965}
2068 2966
2069static void 2967static int
2968slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2969{
2970 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2971}
2972
2973static int
2974slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2975{
2976 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2977}
2978
2979static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2980slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 2981{
2072 AV *av = (AV *)SvRV (arg [0]); 2982 AV *av = (AV *)SvRV (arg [0]);
2073 2983
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 2984 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 2985 {
2076 frame->data = (void *)av; 2986 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 2987 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 2988 }
2080 else 2989 else
2081 { 2990 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2991 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 2992
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2993 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 2994 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2995 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2996 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2997 frame->destroy = coro_semaphore_destroy;
2091 } 2998 }
2999}
2092 3000
3001static void
3002slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3003{
3004 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 3005 frame->check = slf_check_semaphore_down;
3006}
2094 3007
3008static void
3009slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3010{
3011 if (items >= 2)
3012 {
3013 /* callback form */
3014 AV *av = (AV *)SvRV (arg [0]);
3015 SV *cb_cv = s_get_cv_croak (arg [1]);
3016
3017 av_push (av, SvREFCNT_inc_NN (cb_cv));
3018
3019 if (SvIVX (AvARRAY (av)[0]) > 0)
3020 coro_semaphore_adjust (aTHX_ av, 0);
3021
3022 frame->prepare = prepare_nop;
3023 frame->check = slf_check_nop;
3024 }
3025 else
3026 {
3027 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3028 frame->check = slf_check_semaphore_wait;
3029 }
3030}
3031
3032/* signal */
3033
3034static void
3035coro_signal_wake (pTHX_ AV *av, int count)
3036{
3037 SvIVX (AvARRAY (av)[0]) = 0;
3038
3039 /* now signal count waiters */
3040 while (count > 0 && AvFILLp (av) > 0)
3041 {
3042 SV *cb;
3043
3044 /* swap first two elements so we can shift a waiter */
3045 cb = AvARRAY (av)[0];
3046 AvARRAY (av)[0] = AvARRAY (av)[1];
3047 AvARRAY (av)[1] = cb;
3048
3049 cb = av_shift (av);
3050
3051 if (SvTYPE (cb) == SVt_PVCV)
3052 {
3053 dSP;
3054 PUSHMARK (SP);
3055 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3056 PUTBACK;
3057 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3058 }
3059 else
3060 {
3061 api_ready (aTHX_ cb);
3062 sv_setiv (cb, 0); /* signal waiter */
3063 }
3064
3065 SvREFCNT_dec (cb);
3066
3067 --count;
3068 }
3069}
3070
3071static int
3072slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3073{
3074 /* if we are about to throw, also stop waiting */
3075 return SvROK ((SV *)frame->data) && !CORO_THROW;
3076}
3077
3078static void
3079slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3080{
3081 AV *av = (AV *)SvRV (arg [0]);
3082
3083 if (items >= 2)
3084 {
3085 SV *cb_cv = s_get_cv_croak (arg [1]);
3086 av_push (av, SvREFCNT_inc_NN (cb_cv));
3087
3088 if (SvIVX (AvARRAY (av)[0]))
3089 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3090
3091 frame->prepare = prepare_nop;
3092 frame->check = slf_check_nop;
3093 }
3094 else if (SvIVX (AvARRAY (av)[0]))
3095 {
3096 SvIVX (AvARRAY (av)[0]) = 0;
3097 frame->prepare = prepare_nop;
3098 frame->check = slf_check_nop;
3099 }
3100 else
3101 {
3102 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3103
3104 av_push (av, waiter);
3105
3106 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3107 frame->prepare = prepare_schedule;
3108 frame->check = slf_check_signal_wait;
3109 }
2095} 3110}
2096 3111
2097/*****************************************************************************/ 3112/*****************************************************************************/
3113/* Coro::AIO */
2098 3114
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3115#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 3116
2101/* create a closure from XS, returns a code reference */ 3117/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 3118struct io_state
2103/* the callback must use dXSARGS/XSRETURN */ 3119{
3120 int errorno;
3121 I32 laststype; /* U16 in 5.10.0 */
3122 int laststatval;
3123 Stat_t statcache;
3124};
3125
3126static void
3127coro_aio_callback (pTHX_ CV *cv)
3128{
3129 dXSARGS;
3130 AV *state = (AV *)S_GENSUB_ARG;
3131 SV *coro = av_pop (state);
3132 SV *data_sv = newSV (sizeof (struct io_state));
3133
3134 av_extend (state, items - 1);
3135
3136 sv_upgrade (data_sv, SVt_PV);
3137 SvCUR_set (data_sv, sizeof (struct io_state));
3138 SvPOK_only (data_sv);
3139
3140 {
3141 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3142
3143 data->errorno = errno;
3144 data->laststype = PL_laststype;
3145 data->laststatval = PL_laststatval;
3146 data->statcache = PL_statcache;
3147 }
3148
3149 /* now build the result vector out of all the parameters and the data_sv */
3150 {
3151 int i;
3152
3153 for (i = 0; i < items; ++i)
3154 av_push (state, SvREFCNT_inc_NN (ST (i)));
3155 }
3156
3157 av_push (state, data_sv);
3158
3159 api_ready (aTHX_ coro);
3160 SvREFCNT_dec (coro);
3161 SvREFCNT_dec ((AV *)state);
3162}
3163
3164static int
3165slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3166{
3167 AV *state = (AV *)frame->data;
3168
3169 /* if we are about to throw, return early */
3170 /* this does not cancel the aio request, but at least */
3171 /* it quickly returns */
3172 if (CORO_THROW)
3173 return 0;
3174
3175 /* one element that is an RV? repeat! */
3176 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3177 return 1;
3178
3179 /* restore status */
3180 {
3181 SV *data_sv = av_pop (state);
3182 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3183
3184 errno = data->errorno;
3185 PL_laststype = data->laststype;
3186 PL_laststatval = data->laststatval;
3187 PL_statcache = data->statcache;
3188
3189 SvREFCNT_dec (data_sv);
3190 }
3191
3192 /* push result values */
3193 {
3194 dSP;
3195 int i;
3196
3197 EXTEND (SP, AvFILLp (state) + 1);
3198 for (i = 0; i <= AvFILLp (state); ++i)
3199 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3200
3201 PUTBACK;
3202 }
3203
3204 return 0;
3205}
3206
3207static void
3208slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3209{
3210 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3211 SV *coro_hv = SvRV (coro_current);
3212 struct coro *coro = SvSTATE_hv (coro_hv);
3213
3214 /* put our coroutine id on the state arg */
3215 av_push (state, SvREFCNT_inc_NN (coro_hv));
3216
3217 /* first see whether we have a non-zero priority and set it as AIO prio */
3218 if (coro->prio)
3219 {
3220 dSP;
3221
3222 static SV *prio_cv;
3223 static SV *prio_sv;
3224
3225 if (ecb_expect_false (!prio_cv))
3226 {
3227 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3228 prio_sv = newSViv (0);
3229 }
3230
3231 PUSHMARK (SP);
3232 sv_setiv (prio_sv, coro->prio);
3233 XPUSHs (prio_sv);
3234
3235 PUTBACK;
3236 call_sv (prio_cv, G_VOID | G_DISCARD);
3237 }
3238
3239 /* now call the original request */
3240 {
3241 dSP;
3242 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3243 int i;
3244
3245 PUSHMARK (SP);
3246
3247 /* first push all args to the stack */
3248 EXTEND (SP, items + 1);
3249
3250 for (i = 0; i < items; ++i)
3251 PUSHs (arg [i]);
3252
3253 /* now push the callback closure */
3254 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3255
3256 /* now call the AIO function - we assume our request is uncancelable */
3257 PUTBACK;
3258 call_sv ((SV *)req, G_VOID | G_DISCARD);
3259 }
3260
3261 /* now that the request is going, we loop till we have a result */
3262 frame->data = (void *)state;
3263 frame->prepare = prepare_schedule;
3264 frame->check = slf_check_aio_req;
3265}
3266
3267static void
3268coro_aio_req_xs (pTHX_ CV *cv)
3269{
3270 dXSARGS;
3271
3272 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3273
3274 XSRETURN_EMPTY;
3275}
3276
3277/*****************************************************************************/
3278
3279#if CORO_CLONE
3280# include "clone.c"
3281#endif
3282
3283/*****************************************************************************/
3284
2104static SV * 3285static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3286coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2106{ 3287{
2107 CV *cv = (CV *)NEWSV (0, 0); 3288 SV *coro_sv;
3289 struct coro *coro;
3290 MAGIC *mg;
3291 HV *hv;
3292 SV *cb;
3293 int i;
2108 3294
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3295 if (argc > 0)
3296 {
3297 cb = s_get_cv_croak (argv [0]);
2110 3298
2111 CvANON_on (cv); 3299 if (!is_coro)
2112 CvISXSUB_on (cv); 3300 {
2113 CvXSUB (cv) = xsub; 3301 if (CvISXSUB (cb))
2114 GENSUB_ARG = arg; 3302 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2115 3303
2116 return newRV_noinc ((SV *)cv); 3304 if (!CvROOT (cb))
2117} 3305 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3306 }
3307 }
2118 3308
2119/*****************************************************************************/ 3309 Newz (0, coro, 1, struct coro);
3310 coro->args = newAV ();
3311 coro->flags = CF_NEW;
3312
3313 if (coro_first) coro_first->prev = coro;
3314 coro->next = coro_first;
3315 coro_first = coro;
3316
3317 coro->hv = hv = newHV ();
3318 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3319 mg->mg_flags |= MGf_DUP;
3320 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3321
3322 if (argc > 0)
3323 {
3324 av_extend (coro->args, argc + is_coro - 1);
3325
3326 if (is_coro)
3327 {
3328 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3329 cb = (SV *)cv_coro_run;
3330 }
3331
3332 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3333
3334 for (i = 1; i < argc; i++)
3335 av_push (coro->args, newSVsv (argv [i]));
3336 }
3337
3338 return coro_sv;
3339}
3340
3341#ifndef __cplusplus
3342ecb_cold XS(boot_Coro__State);
3343#endif
3344
3345#if CORO_JIT
3346
3347static void ecb_noinline ecb_cold
3348pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3349{
3350 dSP;
3351 AV *av = newAV ();
3352
3353 av_store (av, 3, newSVuv (d));
3354 av_store (av, 2, newSVuv (c));
3355 av_store (av, 1, newSVuv (b));
3356 av_store (av, 0, newSVuv (a));
3357
3358 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3359
3360 PUTBACK;
3361}
3362
3363static void ecb_noinline ecb_cold
3364jit_init (pTHX)
3365{
3366 dSP;
3367 SV *load, *save;
3368 char *map_base;
3369 char *load_ptr, *save_ptr;
3370 STRLEN load_len, save_len, map_len;
3371 int count;
3372
3373 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3374
3375 PUSHMARK (SP);
3376#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3377# include "state.h"
3378#undef VARx
3379 count = call_pv ("Coro::State::_jit", G_ARRAY);
3380 SPAGAIN;
3381
3382 save = POPs; save_ptr = SvPVbyte (save, save_len);
3383 load = POPs; load_ptr = SvPVbyte (load, load_len);
3384
3385 map_len = load_len + save_len + 16;
3386
3387 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3388
3389 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3390
3391 load_perl_slots = (load_save_perl_slots_type)map_base;
3392 memcpy (map_base, load_ptr, load_len);
3393
3394 map_base += (load_len + 15) & ~15;
3395
3396 save_perl_slots = (load_save_perl_slots_type)map_base;
3397 memcpy (map_base, save_ptr, save_len);
3398
3399 /* we are good citizens and try to make the page read-only, so the evil evil */
3400 /* hackers might have it a bit more difficult */
3401 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3402
3403 PUTBACK;
3404 eval_pv ("undef &Coro::State::_jit", 1);
3405}
3406
3407#endif
2120 3408
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3409MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 3410
2123PROTOTYPES: DISABLE 3411PROTOTYPES: DISABLE
2124 3412
… …
2129 coro_thx = PERL_GET_CONTEXT; 3417 coro_thx = PERL_GET_CONTEXT;
2130# endif 3418# endif
2131#endif 3419#endif
2132 BOOT_PAGESIZE; 3420 BOOT_PAGESIZE;
2133 3421
3422 /* perl defines these to check for existance first, but why it doesn't */
3423 /* just create them one at init time is not clear to me, except for */
3424 /* programs trying to delete them, but... */
3425 /* anyway, we declare this as invalid and make sure they are initialised here */
3426 DEFSV;
3427 ERRSV;
3428
3429 cctx_current = cctx_new_empty ();
3430
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3431 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3432 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136 3433
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3434 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3435 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2157 3454
2158 { 3455 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3456 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 3457
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3458 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 3459 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 3460
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3461 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 3462 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 3463 }
2169 3464
2170 coroapi.ver = CORO_API_VERSION; 3465 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 3466 coroapi.rev = CORO_API_REVISION;
2172 3467
… …
2177 coroapi.prepare_nop = prepare_nop; 3472 coroapi.prepare_nop = prepare_nop;
2178 coroapi.prepare_schedule = prepare_schedule; 3473 coroapi.prepare_schedule = prepare_schedule;
2179 coroapi.prepare_cede = prepare_cede; 3474 coroapi.prepare_cede = prepare_cede;
2180 coroapi.prepare_cede_notself = prepare_cede_notself; 3475 coroapi.prepare_cede_notself = prepare_cede_notself;
2181 3476
2182 { 3477 time_init (aTHX);
2183 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2184 3478
2185 if (!svp) croak ("Time::HiRes is required");
2186 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2187
2188 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2189 }
2190
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3479 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3480#if CORO_JIT
3481 PUTBACK;
3482 jit_init (aTHX);
3483 SPAGAIN;
3484#endif
2192} 3485}
2193 3486
2194SV * 3487SV *
2195new (char *klass, ...) 3488new (SV *klass, ...)
3489 ALIAS:
3490 Coro::new = 1
2196 CODE: 3491 CODE:
2197{ 3492 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2198 struct coro *coro; 3493 OUTPUT:
2199 MAGIC *mg;
2200 HV *hv;
2201 int i;
2202
2203 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV ();
2205 coro->flags = CF_NEW;
2206
2207 if (coro_first) coro_first->prev = coro;
2208 coro->next = coro_first;
2209 coro_first = coro;
2210
2211 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215
2216 av_extend (coro->args, items - 1);
2217 for (i = 1; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i)));
2219}
2220 OUTPUT:
2221 RETVAL 3494 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 3495
2228void 3496void
2229transfer (...) 3497transfer (...)
2230 PROTOTYPE: $$ 3498 PROTOTYPE: $$
2231 CODE: 3499 CODE:
2232 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3500 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2233 3501
2234bool
2235_destroy (SV *coro_sv)
2236 CODE:
2237 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2238 OUTPUT:
2239 RETVAL
2240
2241void 3502void
2242_exit (int code) 3503_exit (int code)
2243 PROTOTYPE: $ 3504 PROTOTYPE: $
2244 CODE: 3505 CODE:
2245 _exit (code); 3506 _exit (code);
3507
3508SV *
3509clone (Coro::State coro)
3510 CODE:
3511{
3512#if CORO_CLONE
3513 struct coro *ncoro = coro_clone (aTHX_ coro);
3514 MAGIC *mg;
3515 /* TODO: too much duplication */
3516 ncoro->hv = newHV ();
3517 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3518 mg->mg_flags |= MGf_DUP;
3519 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3520#else
3521 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3522#endif
3523}
3524 OUTPUT:
3525 RETVAL
2246 3526
2247int 3527int
2248cctx_stacksize (int new_stacksize = 0) 3528cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 3529 PROTOTYPE: ;$
2250 CODE: 3530 CODE:
… …
2300 eval = 1 3580 eval = 1
2301 CODE: 3581 CODE:
2302{ 3582{
2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3583 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2304 { 3584 {
2305 struct coro temp; 3585 struct coro *current = SvSTATE_current;
3586 struct CoroSLF slf_save;
2306 3587
2307 if (!(coro->flags & CF_RUNNING)) 3588 if (current != coro)
2308 { 3589 {
2309 PUTBACK; 3590 PUTBACK;
2310 save_perl (aTHX_ &temp); 3591 save_perl (aTHX_ current);
2311 load_perl (aTHX_ coro); 3592 load_perl (aTHX_ coro);
3593 /* the coro is most likely in an active SLF call.
3594 * while not strictly required (the code we execute is
3595 * not allowed to call any SLF functions), it's cleaner
3596 * to reinitialise the slf_frame and restore it later.
3597 * This might one day allow us to actually do SLF calls
3598 * from code executed here.
3599 */
3600 slf_save = slf_frame;
3601 slf_frame.prepare = 0;
3602 SPAGAIN;
2312 } 3603 }
2313 3604
2314 {
2315 dSP;
2316 ENTER;
2317 SAVETMPS;
2318 PUTBACK;
2319 PUSHSTACK; 3605 PUSHSTACK;
3606
2320 PUSHMARK (SP); 3607 PUSHMARK (SP);
3608 PUTBACK;
2321 3609
2322 if (ix) 3610 if (ix)
2323 eval_sv (coderef, 0); 3611 eval_sv (coderef, 0);
2324 else 3612 else
2325 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3613 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 3614
2327 POPSTACK; 3615 POPSTACK;
2328 SPAGAIN; 3616 SPAGAIN;
2329 FREETMPS;
2330 LEAVE;
2331 PUTBACK;
2332 }
2333 3617
2334 if (!(coro->flags & CF_RUNNING)) 3618 if (current != coro)
2335 { 3619 {
3620 PUTBACK;
3621 slf_frame = slf_save;
2336 save_perl (aTHX_ coro); 3622 save_perl (aTHX_ coro);
2337 load_perl (aTHX_ &temp); 3623 load_perl (aTHX_ current);
2338 SPAGAIN; 3624 SPAGAIN;
2339 } 3625 }
2340 } 3626 }
2341} 3627}
2342 3628
… …
2345 PROTOTYPE: $ 3631 PROTOTYPE: $
2346 ALIAS: 3632 ALIAS:
2347 is_ready = CF_READY 3633 is_ready = CF_READY
2348 is_running = CF_RUNNING 3634 is_running = CF_RUNNING
2349 is_new = CF_NEW 3635 is_new = CF_NEW
2350 is_destroyed = CF_DESTROYED 3636 is_destroyed = CF_ZOMBIE
3637 is_zombie = CF_ZOMBIE
3638 is_suspended = CF_SUSPENDED
2351 CODE: 3639 CODE:
2352 RETVAL = boolSV (coro->flags & ix); 3640 RETVAL = boolSV (coro->flags & ix);
2353 OUTPUT: 3641 OUTPUT:
2354 RETVAL 3642 RETVAL
2355 3643
2356void 3644void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3645throw (Coro::State self, SV *exception = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3646 PROTOTYPE: $;$
2359 CODE: 3647 CODE:
3648{
3649 struct coro *current = SvSTATE_current;
3650 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 3651 SvREFCNT_dec (*exceptionp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3652 SvGETMAGIC (exception);
3653 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3654}
2362 3655
2363void 3656void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3657api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3658 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3659 C_ARGS: aTHX_ coro, flags
2367 3660
2368SV * 3661SV *
2369has_cctx (Coro::State coro) 3662has_cctx (Coro::State coro)
2370 PROTOTYPE: $ 3663 PROTOTYPE: $
2371 CODE: 3664 CODE:
2372 RETVAL = boolSV (!!coro->cctx); 3665 /* maybe manage the running flag differently */
3666 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2373 OUTPUT: 3667 OUTPUT:
2374 RETVAL 3668 RETVAL
2375 3669
2376int 3670int
2377is_traced (Coro::State coro) 3671is_traced (Coro::State coro)
… …
2397 3691
2398void 3692void
2399force_cctx () 3693force_cctx ()
2400 PROTOTYPE: 3694 PROTOTYPE:
2401 CODE: 3695 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0; 3696 cctx_current->idle_sp = 0;
2403 3697
2404void 3698void
2405swap_defsv (Coro::State self) 3699swap_defsv (Coro::State self)
2406 PROTOTYPE: $ 3700 PROTOTYPE: $
2407 ALIAS: 3701 ALIAS:
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3709 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3710
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3711 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3712 }
2419 3713
3714void
3715cancel (Coro::State self)
3716 CODE:
3717 coro_state_destroy (aTHX_ self);
3718
3719SV *
3720enable_times (int enabled = enable_times)
3721 CODE:
3722{
3723 RETVAL = boolSV (enable_times);
3724
3725 if (enabled != enable_times)
3726 {
3727 enable_times = enabled;
3728
3729 coro_times_update ();
3730 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3731 }
3732}
3733 OUTPUT:
3734 RETVAL
3735
3736void
3737times (Coro::State self)
3738 PPCODE:
3739{
3740 struct coro *current = SvSTATE (coro_current);
3741
3742 if (ecb_expect_false (current == self))
3743 {
3744 coro_times_update ();
3745 coro_times_add (SvSTATE (coro_current));
3746 }
3747
3748 EXTEND (SP, 2);
3749 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3750 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3751
3752 if (ecb_expect_false (current == self))
3753 coro_times_sub (SvSTATE (coro_current));
3754}
3755
3756void
3757swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3758 CODE:
3759{
3760 struct coro *current = SvSTATE_current;
3761
3762 if (current == coro)
3763 SWAP_SVS (current);
3764
3765 if (!coro->swap_sv)
3766 coro->swap_sv = newAV ();
3767
3768 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3769 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3770
3771 if (current == coro)
3772 SWAP_SVS (current);
3773}
3774
3775
2420MODULE = Coro::State PACKAGE = Coro 3776MODULE = Coro::State PACKAGE = Coro
2421 3777
2422BOOT: 3778BOOT:
2423{ 3779{
2424 int i;
2425
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3780 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3781 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3782 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3783 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 3784 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3785 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3786 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3787 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2432 3788
3789 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3790 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3791 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3792 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3793
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3794 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3795
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3796 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3797 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2437 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3798 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2438 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3799 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2439 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3800 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2440 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3801 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2441
2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2443 coro_ready[i] = newAV ();
2444 3802
2445 { 3803 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3804 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3805
2448 coroapi.schedule = api_schedule; 3806 coroapi.schedule = api_schedule;
3807 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3808 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3809 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3810 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3811 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3812 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3813 coroapi.current = coro_current;
2455 3814
2456 GCoroAPI = &coroapi; 3815 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3816 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3817 SvREADONLY_on (sv);
2459 } 3818 }
2460} 3819}
3820
3821SV *
3822async (...)
3823 PROTOTYPE: &@
3824 CODE:
3825 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3826 api_ready (aTHX_ RETVAL);
3827 OUTPUT:
3828 RETVAL
3829
3830void
3831_destroy (Coro::State coro)
3832 CODE:
3833 /* used by the manager thread */
3834 coro_state_destroy (aTHX_ coro);
3835
3836void
3837on_destroy (Coro::State coro, SV *cb)
3838 CODE:
3839 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3840
3841void
3842join (...)
3843 CODE:
3844 CORO_EXECUTE_SLF_XS (slf_init_join);
3845
3846void
3847terminate (...)
3848 CODE:
3849 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3850
3851void
3852cancel (...)
3853 CODE:
3854 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3855
3856int
3857safe_cancel (Coro::State self, ...)
3858 C_ARGS: aTHX_ self, &ST (1), items - 1
2461 3859
2462void 3860void
2463schedule (...) 3861schedule (...)
2464 CODE: 3862 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3863 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3864
3865void
3866schedule_to (...)
3867 CODE:
3868 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3869
3870void
3871cede_to (...)
3872 CODE:
3873 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2466 3874
2467void 3875void
2468cede (...) 3876cede (...)
2469 CODE: 3877 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3878 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2484void 3892void
2485_set_readyhook (SV *hook) 3893_set_readyhook (SV *hook)
2486 PROTOTYPE: $ 3894 PROTOTYPE: $
2487 CODE: 3895 CODE:
2488 SvREFCNT_dec (coro_readyhook); 3896 SvREFCNT_dec (coro_readyhook);
3897 SvGETMAGIC (hook);
3898 if (SvOK (hook))
3899 {
2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3900 coro_readyhook = newSVsv (hook);
3901 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3902 }
3903 else
3904 {
3905 coro_readyhook = 0;
3906 CORO_READYHOOK = 0;
3907 }
2490 3908
2491int 3909int
2492prio (Coro::State coro, int newprio = 0) 3910prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$ 3911 PROTOTYPE: $;$
2494 ALIAS: 3912 ALIAS:
… …
2500 if (items > 1) 3918 if (items > 1)
2501 { 3919 {
2502 if (ix) 3920 if (ix)
2503 newprio = coro->prio - newprio; 3921 newprio = coro->prio - newprio;
2504 3922
2505 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3923 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2506 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3924 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2507 3925
2508 coro->prio = newprio; 3926 coro->prio = newprio;
2509 } 3927 }
2510} 3928}
2511 OUTPUT: 3929 OUTPUT:
… …
2525 CODE: 3943 CODE:
2526 RETVAL = coro_nready; 3944 RETVAL = coro_nready;
2527 OUTPUT: 3945 OUTPUT:
2528 RETVAL 3946 RETVAL
2529 3947
2530# for async_pool speedup
2531void 3948void
2532_pool_1 (SV *cb) 3949suspend (Coro::State self)
3950 PROTOTYPE: $
2533 CODE: 3951 CODE:
2534{ 3952 self->flags |= CF_SUSPENDED;
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541 3953
2542 if (!invoke) 3954void
3955resume (Coro::State self)
3956 PROTOTYPE: $
3957 CODE:
3958 self->flags &= ~CF_SUSPENDED;
3959
3960void
3961_pool_handler (...)
3962 CODE:
3963 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3964
3965void
3966async_pool (SV *cv, ...)
3967 PROTOTYPE: &@
3968 PPCODE:
3969{
3970 HV *hv = (HV *)av_pop (av_async_pool);
3971 AV *av = newAV ();
3972 SV *cb = ST (0);
3973 int i;
3974
3975 av_extend (av, items - 2);
3976 for (i = 1; i < items; ++i)
3977 av_push (av, SvREFCNT_inc_NN (ST (i)));
3978
3979 if ((SV *)hv == &PL_sv_undef)
2543 { 3980 {
2544 SV *old = PL_diehook; 3981 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2545 PL_diehook = 0; 3982 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2546 SvREFCNT_dec (old); 3983 SvREFCNT_dec (sv);
2547 croak ("\3async_pool terminate\2\n");
2548 } 3984 }
2549 3985
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 { 3986 {
2563 av_fill (defav, len - 1); 3987 struct coro *coro = SvSTATE_hv (hv);
2564 for (i = 0; i < len; ++i) 3988
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3989 assert (!coro->invoke_cb);
3990 assert (!coro->invoke_av);
3991 coro->invoke_cb = SvREFCNT_inc (cb);
3992 coro->invoke_av = av;
2566 } 3993 }
3994
3995 api_ready (aTHX_ (SV *)hv);
3996
3997 if (GIMME_V != G_VOID)
3998 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3999 else
4000 SvREFCNT_dec (hv);
2567} 4001}
4002
4003SV *
4004rouse_cb ()
4005 PROTOTYPE:
4006 CODE:
4007 RETVAL = coro_new_rouse_cb (aTHX);
4008 OUTPUT:
4009 RETVAL
2568 4010
2569void 4011void
2570_pool_2 (SV *cb) 4012rouse_wait (...)
4013 PROTOTYPE: ;$
4014 PPCODE:
4015 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4016
4017void
4018on_enter (SV *block)
4019 ALIAS:
4020 on_leave = 1
4021 PROTOTYPE: &
2571 CODE: 4022 CODE:
2572{ 4023{
2573 struct coro *coro = SvSTATE_current; 4024 struct coro *coro = SvSTATE_current;
4025 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2574 4026
2575 sv_setsv (cb, &PL_sv_undef); 4027 block = s_get_cv_croak (block);
2576 4028
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4029 if (!*avp)
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $
2607 PPCODE:
2608{
2609 AV *defav = GvAV (PL_defgv);
2610 AV *av = newAV (); 4030 *avp = newAV ();
2611 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 4031
2617 data->errorno = errno; 4032 av_push (*avp, SvREFCNT_inc (block));
2618 data->laststype = PL_laststype;
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621 4033
2622 av_extend (av, AvFILLp (defav) + 1 + 1); 4034 if (!ix)
4035 on_enterleave_call (aTHX_ block);
2623 4036
2624 for (i = 0; i <= AvFILLp (defav); ++i) 4037 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4038 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2626 4039 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2627 av_push (av, data_sv);
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 {
2674 PUSHMARK (SP);
2675 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2677 SPAGAIN;
2678 }
2679
2680 --incede;
2681} 4040}
2682 4041
2683 4042
2684MODULE = Coro::State PACKAGE = PerlIO::cede 4043MODULE = Coro::State PACKAGE = PerlIO::cede
2685 4044
2686BOOT: 4045BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4046 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 4047
4048
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 4049MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 4050
2691SV * 4051SV *
2692new (SV *klass, SV *count_ = 0) 4052new (SV *klass, SV *count = 0)
2693 CODE: 4053 CODE:
2694{ 4054{
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4055 int semcnt = 1;
2696 AV *av = newAV (); 4056
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4057 if (count)
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4058 {
4059 SvGETMAGIC (count);
4060
4061 if (SvOK (count))
4062 semcnt = SvIV (count);
4063 }
4064
4065 RETVAL = sv_bless (
4066 coro_waitarray_new (aTHX_ semcnt),
4067 GvSTASH (CvGV (cv))
4068 );
2699} 4069}
4070 OUTPUT:
4071 RETVAL
4072
4073# helper for Coro::Channel and others
4074SV *
4075_alloc (int count)
4076 CODE:
4077 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 4078 OUTPUT:
2701 RETVAL 4079 RETVAL
2702 4080
2703SV * 4081SV *
2704count (SV *self) 4082count (SV *self)
… …
2713 adjust = 1 4091 adjust = 1
2714 CODE: 4092 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4093 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 4094
2717void 4095void
2718down (SV *self) 4096down (...)
2719 CODE: 4097 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4098 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4099
4100void
4101wait (...)
4102 CODE:
4103 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 4104
2722void 4105void
2723try (SV *self) 4106try (SV *self)
2724 PPCODE: 4107 PPCODE:
2725{ 4108{
… …
2737 XSRETURN_NO; 4120 XSRETURN_NO;
2738} 4121}
2739 4122
2740void 4123void
2741waiters (SV *self) 4124waiters (SV *self)
2742 CODE: 4125 PPCODE:
2743{ 4126{
2744 AV *av = (AV *)SvRV (self); 4127 AV *av = (AV *)SvRV (self);
4128 int wcount = AvFILLp (av) + 1 - 1;
2745 4129
2746 if (GIMME_V == G_SCALAR) 4130 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4131 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 4132 else
2749 { 4133 {
2750 int i; 4134 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 4135 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 4136 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 4137 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 4138 }
2755} 4139}
2756 4140
4141MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4142
4143void
4144_may_delete (SV *sem, int count, int extra_refs)
4145 PPCODE:
4146{
4147 AV *av = (AV *)SvRV (sem);
4148
4149 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4150 && AvFILLp (av) == 0 /* no waiters, just count */
4151 && SvIV (AvARRAY (av)[0]) == count)
4152 XSRETURN_YES;
4153
4154 XSRETURN_NO;
4155}
4156
4157MODULE = Coro::State PACKAGE = Coro::Signal
4158
4159SV *
4160new (SV *klass)
4161 CODE:
4162 RETVAL = sv_bless (
4163 coro_waitarray_new (aTHX_ 0),
4164 GvSTASH (CvGV (cv))
4165 );
4166 OUTPUT:
4167 RETVAL
4168
4169void
4170wait (...)
4171 CODE:
4172 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4173
4174void
4175broadcast (SV *self)
4176 CODE:
4177{
4178 AV *av = (AV *)SvRV (self);
4179 coro_signal_wake (aTHX_ av, AvFILLp (av));
4180}
4181
4182void
4183send (SV *self)
4184 CODE:
4185{
4186 AV *av = (AV *)SvRV (self);
4187
4188 if (AvFILLp (av))
4189 coro_signal_wake (aTHX_ av, 1);
4190 else
4191 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4192}
4193
4194IV
4195awaited (SV *self)
4196 CODE:
4197 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4198 OUTPUT:
4199 RETVAL
4200
4201
4202MODULE = Coro::State PACKAGE = Coro::AnyEvent
4203
4204BOOT:
4205 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4206
4207void
4208_schedule (...)
4209 CODE:
4210{
4211 static int incede;
4212
4213 api_cede_notself (aTHX);
4214
4215 ++incede;
4216 while (coro_nready >= incede && api_cede (aTHX))
4217 ;
4218
4219 sv_setsv (sv_activity, &PL_sv_undef);
4220 if (coro_nready >= incede)
4221 {
4222 PUSHMARK (SP);
4223 PUTBACK;
4224 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4225 }
4226
4227 --incede;
4228}
4229
4230
4231MODULE = Coro::State PACKAGE = Coro::AIO
4232
4233void
4234_register (char *target, char *proto, SV *req)
4235 CODE:
4236{
4237 SV *req_cv = s_get_cv_croak (req);
4238 /* newXSproto doesn't return the CV on 5.8 */
4239 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4240 sv_setpv ((SV *)slf_cv, proto);
4241 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4242}
4243
4244MODULE = Coro::State PACKAGE = Coro::Select
4245
4246void
4247patch_pp_sselect ()
4248 CODE:
4249 if (!coro_old_pp_sselect)
4250 {
4251 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4252 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4253 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4254 }
4255
4256void
4257unpatch_pp_sselect ()
4258 CODE:
4259 if (coro_old_pp_sselect)
4260 {
4261 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4262 coro_old_pp_sselect = 0;
4263 }
4264

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