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Comparing Coro/Coro/State.xs (file contents):
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC vs.
Revision 1.414 by root, Wed Jun 29 16:08:31 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) \ 68#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 69# define HAS_SCOPESTACK_NAME 1
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 70#endif
105 71
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
108#endif 74#endif
… …
117#endif 83#endif
118 84
119/* The next macros try to return the current stack pointer, in an as 85/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 86 * portable way as possible. */
121#if __GNUC__ >= 4 87#if __GNUC__ >= 4
88# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 89# define STACKLEVEL __builtin_frame_address (0)
123#else 90#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
92# define STACKLEVEL ((void *)&stacklevel)
125#endif 93#endif
126 94
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#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 96
144#include "CoroAPI.h" 97#include "CoroAPI.h"
98#define GCoroAPI (&coroapi) /* very sneaky */
145 99
146#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
147# if CORO_PTHREAD 101# if CORO_PTHREAD
148static void *coro_thx; 102static void *coro_thx;
149# endif 103# endif
150#endif 104#endif
151 105
106/* used in state.h */
107#define VAR(name,type) VARx(name, PL_ ## name, type)
108
109#ifdef __linux
110# include <time.h> /* for timespec */
111# include <syscall.h> /* for SYS_* */
112# ifdef SYS_clock_gettime
113# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
114# define CORO_CLOCK_MONOTONIC 1
115# define CORO_CLOCK_THREAD_CPUTIME_ID 3
116# endif
117#endif
118
152static double (*nvtime)(); /* so why doesn't it take void? */ 119static double (*nvtime)(); /* so why doesn't it take void? */
120static void (*u2time)(pTHX_ UV ret[2]);
121
122/* we hijack an hopefully unused CV flag for our purposes */
123#define CVf_SLF 0x4000
124static OP *pp_slf (pTHX);
125static void slf_destroy (pTHX_ struct coro *coro);
153 126
154static U32 cctx_gen; 127static U32 cctx_gen;
155static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
156static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
157static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
158static JMPENV *main_top_env; 131static JMPENV *main_top_env;
159static HV *coro_state_stash, *coro_stash; 132static HV *coro_state_stash, *coro_stash;
160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 133static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
161 134
135static AV *av_destroy; /* destruction queue */
136static SV *sv_manager; /* the manager coro */
137static SV *sv_idle; /* $Coro::idle */
138
162static GV *irsgv; /* $/ */ 139static GV *irsgv; /* $/ */
163static GV *stdoutgv; /* *STDOUT */ 140static GV *stdoutgv; /* *STDOUT */
164static SV *rv_diehook; 141static SV *rv_diehook;
165static SV *rv_warnhook; 142static SV *rv_warnhook;
166static HV *hv_sig; /* %SIG */ 143static HV *hv_sig; /* %SIG */
167 144
168/* async_pool helper stuff */ 145/* async_pool helper stuff */
169static SV *sv_pool_rss; 146static SV *sv_pool_rss;
170static SV *sv_pool_size; 147static SV *sv_pool_size;
148static SV *sv_async_pool_idle; /* description string */
171static AV *av_async_pool; 149static AV *av_async_pool; /* idle pool */
150static SV *sv_Coro; /* class string */
151static CV *cv_pool_handler;
172 152
173/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
174static SV *sv_activity; 154static SV *sv_activity;
175 155
156/* enable processtime/realtime profiling */
157static char enable_times;
158typedef U32 coro_ts[2];
159static coro_ts time_real, time_cpu;
160static char times_valid;
161
176static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
177static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
178 164
179enum { 165enum
166{
180 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
181 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
182 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
183 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
184 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
205 int valgrind_id; 192 int valgrind_id;
206#endif 193#endif
207 unsigned char flags; 194 unsigned char flags;
208} coro_cctx; 195} coro_cctx;
209 196
197static coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
201static MGVTBL coro_state_vtbl;
202
210enum { 203enum
204{
211 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
212 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
213 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
214 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 208 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
209 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
210 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
215}; 211};
216 212
217/* the structure where most of the perl state is stored, overlaid on the cxstack */ 213/* the structure where most of the perl state is stored, overlaid on the cxstack */
218typedef struct 214typedef struct
219{ 215{
220 SV *defsv;
221 AV *defav;
222 SV *errsv;
223 SV *irsgv;
224#define VAR(name,type) type name; 216#define VARx(name,expr,type) type name;
225# include "state.h" 217# include "state.h"
226#undef VAR 218#undef VARx
227} perl_slots; 219} perl_slots;
228 220
221/* how many context stack entries do we need for perl_slots */
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 222#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 223
231/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
232struct coro { 225struct coro
226{
233 /* the C coroutine allocated to this perl coroutine, if any */ 227 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 228 coro_cctx *cctx;
229
230 /* ready queue */
231 struct coro *next_ready;
235 232
236 /* state data */ 233 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */ 234 struct CoroSLF slf_frame; /* saved slf frame */
238 AV *mainstack; 235 AV *mainstack;
239 perl_slots *slot; /* basically the saved sp */ 236 perl_slots *slot; /* basically the saved sp */
240 237
238 CV *startcv; /* the CV to execute */
241 AV *args; /* data associated with this coroutine (initial args) */ 239 AV *args; /* data associated with this coroutine (initial args) */
242 int refcnt; /* coroutines are refcounted, yes */
243 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
244 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
246 242
247 /* statistics */ 243 /* statistics */
248 int usecount; /* number of transfers to this coro */ 244 int usecount; /* number of transfers to this coro */
249 245
250 /* coro process data */ 246 /* coro process data */
251 int prio; 247 int prio;
252 SV *throw; /* exception to be thrown */ 248 SV *except; /* exception to be thrown */
249 SV *rouse_cb; /* last rouse callback */
250 AV *on_destroy; /* callbacks or coros to notify on destroy */
251 AV *status; /* the exit status list */
253 252
254 /* async_pool */ 253 /* async_pool */
255 SV *saved_deffh; 254 SV *saved_deffh;
255 SV *invoke_cb;
256 AV *invoke_av;
257
258 /* on_enter/on_leave */
259 AV *on_enter;
260 AV *on_leave;
261
262 /* swap_sv */
263 AV *swap_sv;
264
265 /* times */
266 coro_ts t_cpu, t_real;
256 267
257 /* linked list */ 268 /* linked list */
258 struct coro *next, *prev; 269 struct coro *next, *prev;
259}; 270};
260 271
261typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
262typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
263 274
264/* the following variables are effectively part of the perl context */ 275/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */ 276/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */ 277/* the main reason we don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */ 278static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
269 279
270/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
271 281
272#define PRIO_MAX 3 282#define CORO_PRIO_MAX 3
273#define PRIO_HIGH 1 283#define CORO_PRIO_HIGH 1
274#define PRIO_NORMAL 0 284#define CORO_PRIO_NORMAL 0
275#define PRIO_LOW -1 285#define CORO_PRIO_LOW -1
276#define PRIO_IDLE -3 286#define CORO_PRIO_IDLE -3
277#define PRIO_MIN -4 287#define CORO_PRIO_MIN -4
278 288
279/* for Coro.pm */ 289/* for Coro.pm */
280static SV *coro_current; 290static SV *coro_current;
281static SV *coro_readyhook; 291static SV *coro_readyhook;
282static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 292static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
293static CV *cv_coro_run;
283static struct coro *coro_first; 294static struct coro *coro_first;
284#define coro_nready coroapi.nready 295#define coro_nready coroapi.nready
285 296
297/** JIT *********************************************************************/
298
299#if CORO_JIT
300 /* APPLE doesn't have HAVE_MMAP though */
301 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
302 #ifndef CORO_JIT_TYPE
303 #if __x86_64 && CORO_JIT_UNIXY
304 #define CORO_JIT_TYPE "amd64-unix"
305 #elif __i386 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "x86-unix"
307 #endif
308 #endif
309#endif
310
311#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
312 #undef CORO_JIT
313#endif
314
315#if CORO_JIT
316 typedef void (*load_save_perl_slots_type)(perl_slots *);
317 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
318#endif
319
320/** Coro::Select ************************************************************/
321
322static OP *(*coro_old_pp_sselect) (pTHX);
323static SV *coro_select_select;
324
325/* horrible hack, but if it works... */
326static OP *
327coro_pp_sselect (pTHX)
328{
329 dSP;
330 PUSHMARK (SP - 4); /* fake argument list */
331 XPUSHs (coro_select_select);
332 PUTBACK;
333
334 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
335 PL_op->op_flags |= OPf_STACKED;
336 PL_op->op_private = 0;
337 return PL_ppaddr [OP_ENTERSUB](aTHX);
338}
339
340/** time stuff **************************************************************/
341
342#ifdef HAS_GETTIMEOFDAY
343
344ecb_inline void
345coro_u2time (pTHX_ UV ret[2])
346{
347 struct timeval tv;
348 gettimeofday (&tv, 0);
349
350 ret [0] = tv.tv_sec;
351 ret [1] = tv.tv_usec;
352}
353
354ecb_inline double
355coro_nvtime (void)
356{
357 struct timeval tv;
358 gettimeofday (&tv, 0);
359
360 return tv.tv_sec + tv.tv_usec * 1e-6;
361}
362
363ecb_inline void
364time_init (pTHX)
365{
366 nvtime = coro_nvtime;
367 u2time = coro_u2time;
368}
369
370#else
371
372ecb_inline void
373time_init (pTHX)
374{
375 SV **svp;
376
377 require_pv ("Time/HiRes.pm");
378
379 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
380
381 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
382 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
383
384 nvtime = INT2PTR (double (*)(), SvIV (*svp));
385
386 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
387 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
388}
389
390#endif
391
286/** lowlevel stuff **********************************************************/ 392/** lowlevel stuff **********************************************************/
287 393
288static SV * 394static SV * ecb_noinline
289coro_get_sv (pTHX_ const char *name, int create) 395coro_get_sv (pTHX_ const char *name, int create)
290{ 396{
291#if PERL_VERSION_ATLEAST (5,10,0) 397#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 398 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_sv (name, create); 399 get_sv (name, create);
294#endif 400#endif
295 return get_sv (name, create); 401 return get_sv (name, create);
296} 402}
297 403
298static AV * 404static AV * ecb_noinline
299coro_get_av (pTHX_ const char *name, int create) 405coro_get_av (pTHX_ const char *name, int create)
300{ 406{
301#if PERL_VERSION_ATLEAST (5,10,0) 407#if PERL_VERSION_ATLEAST (5,10,0)
302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 408 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
303 get_av (name, create); 409 get_av (name, create);
304#endif 410#endif
305 return get_av (name, create); 411 return get_av (name, create);
306} 412}
307 413
308static HV * 414static HV * ecb_noinline
309coro_get_hv (pTHX_ const char *name, int create) 415coro_get_hv (pTHX_ const char *name, int create)
310{ 416{
311#if PERL_VERSION_ATLEAST (5,10,0) 417#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 418 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_hv (name, create); 419 get_hv (name, create);
314#endif 420#endif
315 return get_hv (name, create); 421 return get_hv (name, create);
316} 422}
317 423
318static AV * 424ecb_inline void
425coro_times_update (void)
426{
427#ifdef coro_clock_gettime
428 struct timespec ts;
429
430 ts.tv_sec = ts.tv_nsec = 0;
431 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
432 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
433
434 ts.tv_sec = ts.tv_nsec = 0;
435 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
436 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
437#else
438 dTHX;
439 UV tv[2];
440
441 u2time (aTHX_ tv);
442 time_real [0] = tv [0];
443 time_real [1] = tv [1] * 1000;
444#endif
445}
446
447ecb_inline void
448coro_times_add (struct coro *c)
449{
450 c->t_real [1] += time_real [1];
451 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
452 c->t_real [0] += time_real [0];
453
454 c->t_cpu [1] += time_cpu [1];
455 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
456 c->t_cpu [0] += time_cpu [0];
457}
458
459ecb_inline void
460coro_times_sub (struct coro *c)
461{
462 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
463 c->t_real [1] -= time_real [1];
464 c->t_real [0] -= time_real [0];
465
466 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
467 c->t_cpu [1] -= time_cpu [1];
468 c->t_cpu [0] -= time_cpu [0];
469}
470
471/*****************************************************************************/
472/* magic glue */
473
474#define CORO_MAGIC_type_cv 26
475#define CORO_MAGIC_type_state PERL_MAGIC_ext
476
477#define CORO_MAGIC_NN(sv, type) \
478 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
479 ? SvMAGIC (sv) \
480 : mg_find (sv, type))
481
482#define CORO_MAGIC(sv, type) \
483 (ecb_expect_true (SvMAGIC (sv)) \
484 ? CORO_MAGIC_NN (sv, type) \
485 : 0)
486
487#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
488#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
489
490ecb_inline MAGIC *
491SvSTATEhv_p (pTHX_ SV *coro)
492{
493 MAGIC *mg;
494
495 if (ecb_expect_true (
496 SvTYPE (coro) == SVt_PVHV
497 && (mg = CORO_MAGIC_state (coro))
498 && mg->mg_virtual == &coro_state_vtbl
499 ))
500 return mg;
501
502 return 0;
503}
504
505ecb_inline struct coro *
506SvSTATE_ (pTHX_ SV *coro)
507{
508 MAGIC *mg;
509
510 if (SvROK (coro))
511 coro = SvRV (coro);
512
513 mg = SvSTATEhv_p (aTHX_ coro);
514 if (!mg)
515 croak ("Coro::State object required");
516
517 return (struct coro *)mg->mg_ptr;
518}
519
520#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
521
522/* faster than SvSTATE, but expects a coroutine hv */
523#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
524#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
525
526/*****************************************************************************/
527/* padlist management and caching */
528
529ecb_inline AV *
319coro_clone_padlist (pTHX_ CV *cv) 530coro_derive_padlist (pTHX_ CV *cv)
320{ 531{
321 AV *padlist = CvPADLIST (cv); 532 AV *padlist = CvPADLIST (cv);
322 AV *newpadlist, *newpad; 533 AV *newpadlist, *newpad;
323 534
324 newpadlist = newAV (); 535 newpadlist = newAV ();
… …
329 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 540 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
330#endif 541#endif
331 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 542 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
332 --AvFILLp (padlist); 543 --AvFILLp (padlist);
333 544
334 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 545 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
335 av_store (newpadlist, 1, (SV *)newpad); 546 av_store (newpadlist, 1, (SV *)newpad);
336 547
337 return newpadlist; 548 return newpadlist;
338} 549}
339 550
340static void 551ecb_inline void
341free_padlist (pTHX_ AV *padlist) 552free_padlist (pTHX_ AV *padlist)
342{ 553{
343 /* may be during global destruction */ 554 /* may be during global destruction */
344 if (SvREFCNT (padlist)) 555 if (!IN_DESTRUCT)
345 { 556 {
346 I32 i = AvFILLp (padlist); 557 I32 i = AvFILLp (padlist);
347 while (i >= 0) 558
559 while (i > 0) /* special-case index 0 */
348 { 560 {
349 SV **svp = av_fetch (padlist, i--, FALSE); 561 /* we try to be extra-careful here */
350 if (svp) 562 AV *av = (AV *)AvARRAY (padlist)[i--];
351 { 563 I32 j = AvFILLp (av);
352 SV *sv; 564
353 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 565 while (j >= 0)
566 SvREFCNT_dec (AvARRAY (av)[j--]);
567
568 AvFILLp (av) = -1;
354 SvREFCNT_dec (sv); 569 SvREFCNT_dec (av);
355
356 SvREFCNT_dec (*svp);
357 }
358 } 570 }
359 571
572 SvREFCNT_dec (AvARRAY (padlist)[0]);
573
574 AvFILLp (padlist) = -1;
360 SvREFCNT_dec ((SV*)padlist); 575 SvREFCNT_dec ((SV*)padlist);
361 } 576 }
362} 577}
363 578
364static int 579static int
365coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 580coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
366{ 581{
367 AV *padlist; 582 AV *padlist;
368 AV *av = (AV *)mg->mg_obj; 583 AV *av = (AV *)mg->mg_obj;
584
585 /* perl manages to free our internal AV and _then_ call us */
586 if (IN_DESTRUCT)
587 return 0;
369 588
370 /* casting is fun. */ 589 /* casting is fun. */
371 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 590 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
372 free_padlist (aTHX_ padlist); 591 free_padlist (aTHX_ padlist);
373 592
374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 593 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
375 594
376 return 0; 595 return 0;
377} 596}
378
379#define CORO_MAGIC_type_cv 26
380#define CORO_MAGIC_type_state PERL_MAGIC_ext
381 597
382static MGVTBL coro_cv_vtbl = { 598static MGVTBL coro_cv_vtbl = {
383 0, 0, 0, 0, 599 0, 0, 0, 0,
384 coro_cv_free 600 coro_cv_free
385}; 601};
386 602
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
392#define CORO_MAGIC(sv, type) \
393 (expect_true (SvMAGIC (sv)) \
394 ? CORO_MAGIC_NN (sv, type) \
395 : 0)
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
399
400INLINE struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
429
430/* the next two functions merely cache the padlists */ 603/* the next two functions merely cache the padlists */
431static void 604ecb_inline void
432get_padlist (pTHX_ CV *cv) 605get_padlist (pTHX_ CV *cv)
433{ 606{
434 MAGIC *mg = CORO_MAGIC_cv (cv); 607 MAGIC *mg = CORO_MAGIC_cv (cv);
435 AV *av; 608 AV *av;
436 609
437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 610 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 611 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
439 else 612 else
440 { 613 {
441#if CORO_PREFER_PERL_FUNCTIONS 614#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 615 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 616 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 617 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 618 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 619 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 620 SvREFCNT_dec (cp);
448#else 621#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 622 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 623#endif
451 } 624 }
452} 625}
453 626
454static void 627ecb_inline void
455put_padlist (pTHX_ CV *cv) 628put_padlist (pTHX_ CV *cv)
456{ 629{
457 MAGIC *mg = CORO_MAGIC_cv (cv); 630 MAGIC *mg = CORO_MAGIC_cv (cv);
458 AV *av; 631 AV *av;
459 632
460 if (expect_false (!mg)) 633 if (ecb_expect_false (!mg))
461 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 634 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
462 635
463 av = (AV *)mg->mg_obj; 636 av = (AV *)mg->mg_obj;
464 637
465 if (expect_false (AvFILLp (av) >= AvMAX (av))) 638 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1); 639 av_extend (av, AvFILLp (av) + 1);
467 640
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 641 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 642}
470 643
471/** load & save, init *******************************************************/ 644/** load & save, init *******************************************************/
645
646/* swap sv heads, at least logically */
647static void
648swap_svs (pTHX_ Coro__State c)
649{
650 int i;
651
652 for (i = 0; i <= AvFILLp (c->swap_sv); )
653 {
654 SV *a = AvARRAY (c->swap_sv)[i++];
655 SV *b = AvARRAY (c->swap_sv)[i++];
656
657 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
658 SV tmp;
659
660 /* swap sv_any */
661 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
662
663 /* swap sv_flags */
664 SvFLAGS (&tmp) = SvFLAGS (a);
665 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
666 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
667
668#if PERL_VERSION_ATLEAST (5,10,0)
669 /* perl 5.10 complicates this _quite_ a bit, but it also is
670 * much faster, so no quarrels here. alternatively, we could
671 * sv_upgrade to avoid this.
672 */
673 {
674 /* swap sv_u */
675 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
676
677 /* if SvANY points to the head, we need to adjust the pointers,
678 * as the pointer for a still points to b, and maybe vice versa.
679 */
680 #define svany_in_head(type) \
681 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
682
683 if (svany_in_head (SvTYPE (a)))
684 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
685
686 if (svany_in_head (SvTYPE (b)))
687 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
688 }
689#endif
690 }
691}
692
693#define SWAP_SVS(coro) \
694 if (ecb_expect_false ((coro)->swap_sv)) \
695 swap_svs (aTHX_ (coro))
696
697static void
698on_enterleave_call (pTHX_ SV *cb);
472 699
473static void 700static void
474load_perl (pTHX_ Coro__State c) 701load_perl (pTHX_ Coro__State c)
475{ 702{
476 perl_slots *slot = c->slot; 703 perl_slots *slot = c->slot;
477 c->slot = 0; 704 c->slot = 0;
478 705
479 PL_mainstack = c->mainstack; 706 PL_mainstack = c->mainstack;
480 707
481 GvSV (PL_defgv) = slot->defsv; 708#if CORO_JIT
482 GvAV (PL_defgv) = slot->defav; 709 load_perl_slots (slot);
483 GvSV (PL_errgv) = slot->errsv; 710#else
484 GvSV (irsgv) = slot->irsgv;
485
486 #define VAR(name,type) PL_ ## name = slot->name; 711 #define VARx(name,expr,type) expr = slot->name;
487 # include "state.h" 712 # include "state.h"
488 #undef VAR 713 #undef VARx
714#endif
489 715
490 { 716 {
491 dSP; 717 dSP;
492 718
493 CV *cv; 719 CV *cv;
494 720
495 /* now do the ugly restore mess */ 721 /* now do the ugly restore mess */
496 while (expect_true (cv = (CV *)POPs)) 722 while (ecb_expect_true (cv = (CV *)POPs))
497 { 723 {
498 put_padlist (aTHX_ cv); /* mark this padlist as available */ 724 put_padlist (aTHX_ cv); /* mark this padlist as available */
499 CvDEPTH (cv) = PTR2IV (POPs); 725 CvDEPTH (cv) = PTR2IV (POPs);
500 CvPADLIST (cv) = (AV *)POPs; 726 CvPADLIST (cv) = (AV *)POPs;
501 } 727 }
502 728
503 PUTBACK; 729 PUTBACK;
504 } 730 }
505 731
506 slf_frame = c->slf_frame; 732 slf_frame = c->slf_frame;
507 coro_throw = c->throw; 733 CORO_THROW = c->except;
734
735 if (ecb_expect_false (enable_times))
736 {
737 if (ecb_expect_false (!times_valid))
738 coro_times_update ();
739
740 coro_times_sub (c);
741 }
742
743 if (ecb_expect_false (c->on_enter))
744 {
745 int i;
746
747 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
748 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
749 }
750
751 SWAP_SVS (c);
508} 752}
509 753
510static void 754static void
511save_perl (pTHX_ Coro__State c) 755save_perl (pTHX_ Coro__State c)
512{ 756{
513 c->throw = coro_throw; 757 SWAP_SVS (c);
758
759 if (ecb_expect_false (c->on_leave))
760 {
761 int i;
762
763 for (i = AvFILLp (c->on_leave); i >= 0; --i)
764 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
765 }
766
767 times_valid = 0;
768
769 if (ecb_expect_false (enable_times))
770 {
771 coro_times_update (); times_valid = 1;
772 coro_times_add (c);
773 }
774
775 c->except = CORO_THROW;
514 c->slf_frame = slf_frame; 776 c->slf_frame = slf_frame;
515 777
516 { 778 {
517 dSP; 779 dSP;
518 I32 cxix = cxstack_ix; 780 I32 cxix = cxstack_ix;
… …
526 788
527 XPUSHs (Nullsv); 789 XPUSHs (Nullsv);
528 /* this loop was inspired by pp_caller */ 790 /* this loop was inspired by pp_caller */
529 for (;;) 791 for (;;)
530 { 792 {
531 while (expect_true (cxix >= 0)) 793 while (ecb_expect_true (cxix >= 0))
532 { 794 {
533 PERL_CONTEXT *cx = &ccstk[cxix--]; 795 PERL_CONTEXT *cx = &ccstk[cxix--];
534 796
535 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 797 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
536 { 798 {
537 CV *cv = cx->blk_sub.cv; 799 CV *cv = cx->blk_sub.cv;
538 800
539 if (expect_true (CvDEPTH (cv))) 801 if (ecb_expect_true (CvDEPTH (cv)))
540 { 802 {
541 EXTEND (SP, 3); 803 EXTEND (SP, 3);
542 PUSHs ((SV *)CvPADLIST (cv)); 804 PUSHs ((SV *)CvPADLIST (cv));
543 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 805 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
544 PUSHs ((SV *)cv); 806 PUSHs ((SV *)cv);
… …
547 get_padlist (aTHX_ cv); 809 get_padlist (aTHX_ cv);
548 } 810 }
549 } 811 }
550 } 812 }
551 813
552 if (expect_true (top_si->si_type == PERLSI_MAIN)) 814 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
553 break; 815 break;
554 816
555 top_si = top_si->si_prev; 817 top_si = top_si->si_prev;
556 ccstk = top_si->si_cxstack; 818 ccstk = top_si->si_cxstack;
557 cxix = top_si->si_cxix; 819 cxix = top_si->si_cxix;
… …
559 821
560 PUTBACK; 822 PUTBACK;
561 } 823 }
562 824
563 /* allocate some space on the context stack for our purposes */ 825 /* allocate some space on the context stack for our purposes */
564 /* we manually unroll here, as usually 2 slots is enough */ 826 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
565 if (SLOT_COUNT >= 1) CXINC;
566 if (SLOT_COUNT >= 2) CXINC;
567 if (SLOT_COUNT >= 3) CXINC;
568 { 827 {
569 int i; 828 unsigned int i;
829
570 for (i = 3; i < SLOT_COUNT; ++i) 830 for (i = 0; i < SLOT_COUNT; ++i)
571 CXINC; 831 CXINC;
572 } 832
573 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 833 cxstack_ix -= SLOT_COUNT; /* undo allocation */
834 }
574 835
575 c->mainstack = PL_mainstack; 836 c->mainstack = PL_mainstack;
576 837
577 { 838 {
578 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 839 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
579 840
580 slot->defav = GvAV (PL_defgv); 841#if CORO_JIT
581 slot->defsv = DEFSV; 842 save_perl_slots (slot);
582 slot->errsv = ERRSV; 843#else
583 slot->irsgv = GvSV (irsgv);
584
585 #define VAR(name,type) slot->name = PL_ ## name; 844 #define VARx(name,expr,type) slot->name = expr;
586 # include "state.h" 845 # include "state.h"
587 #undef VAR 846 #undef VARx
847#endif
588 } 848 }
589} 849}
590 850
591/* 851/*
592 * allocate various perl stacks. This is almost an exact copy 852 * allocate various perl stacks. This is almost an exact copy
593 * of perl.c:init_stacks, except that it uses less memory 853 * of perl.c:init_stacks, except that it uses less memory
594 * on the (sometimes correct) assumption that coroutines do 854 * on the (sometimes correct) assumption that coroutines do
595 * not usually need a lot of stackspace. 855 * not usually need a lot of stackspace.
596 */ 856 */
597#if CORO_PREFER_PERL_FUNCTIONS 857#if CORO_PREFER_PERL_FUNCTIONS
598# define coro_init_stacks init_stacks 858# define coro_init_stacks(thx) init_stacks ()
599#else 859#else
600static void 860static void
601coro_init_stacks (pTHX) 861coro_init_stacks (pTHX)
602{ 862{
603 PL_curstackinfo = new_stackinfo(32, 8); 863 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
604 PL_curstackinfo->si_type = PERLSI_MAIN; 864 PL_curstackinfo->si_type = PERLSI_MAIN;
605 PL_curstack = PL_curstackinfo->si_stack; 865 PL_curstack = PL_curstackinfo->si_stack;
606 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 866 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
607 867
608 PL_stack_base = AvARRAY(PL_curstack); 868 PL_stack_base = AvARRAY(PL_curstack);
… …
623#endif 883#endif
624 884
625 New(54,PL_scopestack,8,I32); 885 New(54,PL_scopestack,8,I32);
626 PL_scopestack_ix = 0; 886 PL_scopestack_ix = 0;
627 PL_scopestack_max = 8; 887 PL_scopestack_max = 8;
888#if HAS_SCOPESTACK_NAME
889 New(54,PL_scopestack_name,8,const char*);
890#endif
628 891
629 New(54,PL_savestack,24,ANY); 892 New(54,PL_savestack,24,ANY);
630 PL_savestack_ix = 0; 893 PL_savestack_ix = 0;
631 PL_savestack_max = 24; 894 PL_savestack_max = 24;
632 895
… …
660 } 923 }
661 924
662 Safefree (PL_tmps_stack); 925 Safefree (PL_tmps_stack);
663 Safefree (PL_markstack); 926 Safefree (PL_markstack);
664 Safefree (PL_scopestack); 927 Safefree (PL_scopestack);
928#if HAS_SCOPESTACK_NAME
929 Safefree (PL_scopestack_name);
930#endif
665 Safefree (PL_savestack); 931 Safefree (PL_savestack);
666#if !PERL_VERSION_ATLEAST (5,10,0) 932#if !PERL_VERSION_ATLEAST (5,10,0)
667 Safefree (PL_retstack); 933 Safefree (PL_retstack);
668#endif 934#endif
669} 935}
670 936
937#define CORO_RSS \
938 rss += sizeof (SYM (curstackinfo)); \
939 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
940 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
941 rss += SYM (tmps_max) * sizeof (SV *); \
942 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
943 rss += SYM (scopestack_max) * sizeof (I32); \
944 rss += SYM (savestack_max) * sizeof (ANY);
945
671static size_t 946static size_t
672coro_rss (pTHX_ struct coro *coro) 947coro_rss (pTHX_ struct coro *coro)
673{ 948{
674 size_t rss = sizeof (*coro); 949 size_t rss = sizeof (*coro);
675 950
676 if (coro->mainstack) 951 if (coro->mainstack)
677 { 952 {
678 perl_slots tmp_slot;
679 perl_slots *slot;
680
681 if (coro->flags & CF_RUNNING) 953 if (coro->flags & CF_RUNNING)
682 { 954 {
683 slot = &tmp_slot; 955 #define SYM(sym) PL_ ## sym
684 956 CORO_RSS;
685 #define VAR(name,type) slot->name = PL_ ## name;
686 # include "state.h"
687 #undef VAR 957 #undef SYM
688 } 958 }
689 else 959 else
690 slot = coro->slot;
691
692 if (slot)
693 { 960 {
694 rss += sizeof (slot->curstackinfo); 961 #define SYM(sym) coro->slot->sym
695 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 962 CORO_RSS;
696 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 963 #undef SYM
697 rss += slot->tmps_max * sizeof (SV *);
698 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
699 rss += slot->scopestack_max * sizeof (I32);
700 rss += slot->savestack_max * sizeof (ANY);
701
702#if !PERL_VERSION_ATLEAST (5,10,0)
703 rss += slot->retstack_max * sizeof (OP *);
704#endif
705 } 964 }
706 } 965 }
707 966
708 return rss; 967 return rss;
709} 968}
… …
722#endif 981#endif
723 982
724/* 983/*
725 * This overrides the default magic get method of %SIG elements. 984 * This overrides the default magic get method of %SIG elements.
726 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 985 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
727 * and instead of tryign to save and restore the hash elements, we just provide 986 * and instead of trying to save and restore the hash elements (extremely slow),
728 * readback here. 987 * we just provide our own readback here.
729 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
730 * not expecting this to actually change the hook. This is a potential problem
731 * when a schedule happens then, but we ignore this.
732 */ 988 */
733static int 989static int ecb_cold
734coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 990coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
735{ 991{
736 const char *s = MgPV_nolen_const (mg); 992 const char *s = MgPV_nolen_const (mg);
737 993
738 if (*s == '_') 994 if (*s == '_')
… …
750 } 1006 }
751 1007
752 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1008 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
753} 1009}
754 1010
755static int 1011static int ecb_cold
756coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1012coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
757{ 1013{
758 const char *s = MgPV_nolen_const (mg); 1014 const char *s = MgPV_nolen_const (mg);
759 1015
760 if (*s == '_') 1016 if (*s == '_')
… …
774 } 1030 }
775 1031
776 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1032 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
777} 1033}
778 1034
779static int 1035static int ecb_cold
780coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1036coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
781{ 1037{
782 const char *s = MgPV_nolen_const (mg); 1038 const char *s = MgPV_nolen_const (mg);
783 1039
784 if (*s == '_') 1040 if (*s == '_')
… …
789 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1045 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
790 1046
791 if (svp) 1047 if (svp)
792 { 1048 {
793 SV *old = *svp; 1049 SV *old = *svp;
794 *svp = newSVsv (sv); 1050 *svp = SvOK (sv) ? newSVsv (sv) : 0;
795 SvREFCNT_dec (old); 1051 SvREFCNT_dec (old);
796 return 0; 1052 return 0;
797 } 1053 }
798 } 1054 }
799 1055
… …
811slf_check_nop (pTHX_ struct CoroSLF *frame) 1067slf_check_nop (pTHX_ struct CoroSLF *frame)
812{ 1068{
813 return 0; 1069 return 0;
814} 1070}
815 1071
816static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1072static int
1073slf_check_repeat (pTHX_ struct CoroSLF *frame)
1074{
1075 return 1;
1076}
1077
1078static UNOP init_perl_op;
1079
1080ecb_noinline static void /* noinline to keep it out of the transfer fast path */
817coro_setup (pTHX_ struct coro *coro) 1081init_perl (pTHX_ struct coro *coro)
818{ 1082{
819 /* 1083 /*
820 * emulate part of the perl startup here. 1084 * emulate part of the perl startup here.
821 */ 1085 */
822 coro_init_stacks (aTHX); 1086 coro_init_stacks (aTHX);
823 1087
824 PL_runops = RUNOPS_DEFAULT; 1088 PL_runops = RUNOPS_DEFAULT;
825 PL_curcop = &PL_compiling; 1089 PL_curcop = &PL_compiling;
826 PL_in_eval = EVAL_NULL; 1090 PL_in_eval = EVAL_NULL;
827 PL_comppad = 0; 1091 PL_comppad = 0;
1092 PL_comppad_name = 0;
1093 PL_comppad_name_fill = 0;
1094 PL_comppad_name_floor = 0;
828 PL_curpm = 0; 1095 PL_curpm = 0;
829 PL_curpad = 0; 1096 PL_curpad = 0;
830 PL_localizing = 0; 1097 PL_localizing = 0;
831 PL_dirty = 0;
832 PL_restartop = 0; 1098 PL_restartop = 0;
833#if PERL_VERSION_ATLEAST (5,10,0) 1099#if PERL_VERSION_ATLEAST (5,10,0)
834 PL_parser = 0; 1100 PL_parser = 0;
835#endif 1101#endif
1102 PL_hints = 0;
836 1103
837 /* recreate the die/warn hooks */ 1104 /* recreate the die/warn hooks */
838 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1105 PL_diehook = SvREFCNT_inc (rv_diehook);
839 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1106 PL_warnhook = SvREFCNT_inc (rv_warnhook);
840 1107
841 GvSV (PL_defgv) = newSV (0); 1108 GvSV (PL_defgv) = newSV (0);
842 GvAV (PL_defgv) = coro->args; coro->args = 0; 1109 GvAV (PL_defgv) = coro->args; coro->args = 0;
843 GvSV (PL_errgv) = newSV (0); 1110 GvSV (PL_errgv) = newSV (0);
844 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1111 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1112 GvHV (PL_hintgv) = 0;
845 PL_rs = newSVsv (GvSV (irsgv)); 1113 PL_rs = newSVsv (GvSV (irsgv));
846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1114 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
847 1115
848 { 1116 {
849 dSP; 1117 dSP;
850 UNOP myop; 1118 UNOP myop;
851 1119
852 Zero (&myop, 1, UNOP); 1120 Zero (&myop, 1, UNOP);
853 myop.op_next = Nullop; 1121 myop.op_next = Nullop;
1122 myop.op_type = OP_ENTERSUB;
854 myop.op_flags = OPf_WANT_VOID; 1123 myop.op_flags = OPf_WANT_VOID;
855 1124
856 PUSHMARK (SP); 1125 PUSHMARK (SP);
857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1126 PUSHs ((SV *)coro->startcv);
858 PUTBACK; 1127 PUTBACK;
859 PL_op = (OP *)&myop; 1128 PL_op = (OP *)&myop;
860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1129 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
861 SPAGAIN;
862 } 1130 }
863 1131
864 /* this newly created coroutine might be run on an existing cctx which most 1132 /* this newly created coroutine might be run on an existing cctx which most
865 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1133 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
866 */ 1134 */
867 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1135 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1136 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1137 slf_frame.destroy = 0;
869 1138
870 coro_throw = coro->throw; 1139 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
871} 1140 init_perl_op.op_next = PL_op;
1141 init_perl_op.op_type = OP_ENTERSUB;
1142 init_perl_op.op_ppaddr = pp_slf;
1143 /* no flags etc. required, as an init function won't be called */
872 1144
1145 PL_op = (OP *)&init_perl_op;
1146
1147 /* copy throw, in case it was set before init_perl */
1148 CORO_THROW = coro->except;
1149
1150 SWAP_SVS (coro);
1151
1152 if (ecb_expect_false (enable_times))
1153 {
1154 coro_times_update ();
1155 coro_times_sub (coro);
1156 }
1157}
1158
873static void 1159static void
874coro_destruct (pTHX_ struct coro *coro) 1160coro_unwind_stacks (pTHX)
875{ 1161{
876 if (!IN_DESTRUCT) 1162 if (!IN_DESTRUCT)
877 { 1163 {
878 /* restore all saved variables and stuff */ 1164 /* restore all saved variables and stuff */
879 LEAVE_SCOPE (0); 1165 LEAVE_SCOPE (0);
… …
887 POPSTACK_TO (PL_mainstack); 1173 POPSTACK_TO (PL_mainstack);
888 1174
889 /* unwind main stack */ 1175 /* unwind main stack */
890 dounwind (-1); 1176 dounwind (-1);
891 } 1177 }
1178}
892 1179
893 SvREFCNT_dec (GvSV (PL_defgv)); 1180static void
894 SvREFCNT_dec (GvAV (PL_defgv)); 1181destroy_perl (pTHX_ struct coro *coro)
895 SvREFCNT_dec (GvSV (PL_errgv)); 1182{
896 SvREFCNT_dec (PL_defoutgv); 1183 SV *svf [9];
897 SvREFCNT_dec (PL_rs);
898 SvREFCNT_dec (GvSV (irsgv));
899 1184
900 SvREFCNT_dec (PL_diehook);
901 SvREFCNT_dec (PL_warnhook);
902 1185 {
1186 SV *old_current = SvRV (coro_current);
1187 struct coro *current = SvSTATE (old_current);
1188
1189 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1190
1191 save_perl (aTHX_ current);
1192
1193 /* this will cause transfer_check to croak on block*/
1194 SvRV_set (coro_current, (SV *)coro->hv);
1195
1196 load_perl (aTHX_ coro);
1197
1198 coro_unwind_stacks (aTHX);
1199
1200 /* restore swapped sv's */
1201 SWAP_SVS (coro);
1202
1203 coro_destruct_stacks (aTHX);
1204
1205 /* now save some sv's to be free'd later */
1206 svf [0] = GvSV (PL_defgv);
1207 svf [1] = (SV *)GvAV (PL_defgv);
1208 svf [2] = GvSV (PL_errgv);
1209 svf [3] = (SV *)PL_defoutgv;
1210 svf [4] = PL_rs;
1211 svf [5] = GvSV (irsgv);
1212 svf [6] = (SV *)GvHV (PL_hintgv);
1213 svf [7] = PL_diehook;
1214 svf [8] = PL_warnhook;
1215 assert (9 == sizeof (svf) / sizeof (*svf));
1216
1217 SvRV_set (coro_current, old_current);
1218
1219 load_perl (aTHX_ current);
1220 }
1221
1222 {
1223 unsigned int i;
1224
1225 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1226 SvREFCNT_dec (svf [i]);
1227
903 SvREFCNT_dec (coro->saved_deffh); 1228 SvREFCNT_dec (coro->saved_deffh);
904 SvREFCNT_dec (coro_throw); 1229 SvREFCNT_dec (coro->rouse_cb);
905 1230 SvREFCNT_dec (coro->invoke_cb);
906 coro_destruct_stacks (aTHX); 1231 SvREFCNT_dec (coro->invoke_av);
1232 }
907} 1233}
908 1234
909INLINE void 1235ecb_inline void
910free_coro_mortal (pTHX) 1236free_coro_mortal (pTHX)
911{ 1237{
912 if (expect_true (coro_mortal)) 1238 if (ecb_expect_true (coro_mortal))
913 { 1239 {
914 SvREFCNT_dec (coro_mortal); 1240 SvREFCNT_dec ((SV *)coro_mortal);
915 coro_mortal = 0; 1241 coro_mortal = 0;
916 } 1242 }
917} 1243}
918 1244
919static int 1245static int
920runops_trace (pTHX) 1246runops_trace (pTHX)
921{ 1247{
922 COP *oldcop = 0; 1248 COP *oldcop = 0;
923 int oldcxix = -2; 1249 int oldcxix = -2;
924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
925 coro_cctx *cctx = coro->cctx;
926 1250
927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1251 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
928 { 1252 {
929 PERL_ASYNC_CHECK (); 1253 PERL_ASYNC_CHECK ();
930 1254
931 if (cctx->flags & CC_TRACE_ALL) 1255 if (cctx_current->flags & CC_TRACE_ALL)
932 { 1256 {
933 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1257 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
934 { 1258 {
935 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1259 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
936 SV **bot, **top; 1260 SV **bot, **top;
937 AV *av = newAV (); /* return values */ 1261 AV *av = newAV (); /* return values */
938 SV **cb; 1262 SV **cb;
… …
975 1299
976 if (PL_curcop != &PL_compiling) 1300 if (PL_curcop != &PL_compiling)
977 { 1301 {
978 SV **cb; 1302 SV **cb;
979 1303
980 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1304 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
981 { 1305 {
982 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1306 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
983 1307
984 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1308 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
985 { 1309 {
986 runops_proc_t old_runops = PL_runops;
987 dSP; 1310 dSP;
988 GV *gv = CvGV (cx->blk_sub.cv); 1311 GV *gv = CvGV (cx->blk_sub.cv);
989 SV *fullname = sv_2mortal (newSV (0)); 1312 SV *fullname = sv_2mortal (newSV (0));
990 1313
991 if (isGV (gv)) 1314 if (isGV (gv))
… …
996 SAVETMPS; 1319 SAVETMPS;
997 EXTEND (SP, 3); 1320 EXTEND (SP, 3);
998 PUSHMARK (SP); 1321 PUSHMARK (SP);
999 PUSHs (&PL_sv_yes); 1322 PUSHs (&PL_sv_yes);
1000 PUSHs (fullname); 1323 PUSHs (fullname);
1001 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1324 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1002 PUTBACK; 1325 PUTBACK;
1003 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1326 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1004 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1327 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1005 SPAGAIN; 1328 SPAGAIN;
1006 FREETMPS; 1329 FREETMPS;
… …
1009 } 1332 }
1010 1333
1011 oldcxix = cxstack_ix; 1334 oldcxix = cxstack_ix;
1012 } 1335 }
1013 1336
1014 if (cctx->flags & CC_TRACE_LINE) 1337 if (cctx_current->flags & CC_TRACE_LINE)
1015 { 1338 {
1016 dSP; 1339 dSP;
1017 1340
1018 PL_runops = RUNOPS_DEFAULT; 1341 PL_runops = RUNOPS_DEFAULT;
1019 ENTER; 1342 ENTER;
… …
1038 1361
1039 TAINT_NOT; 1362 TAINT_NOT;
1040 return 0; 1363 return 0;
1041} 1364}
1042 1365
1366static struct CoroSLF cctx_ssl_frame;
1367
1043static void 1368static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1369slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1045{ 1370{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0; 1371 ta->prev = 0;
1048} 1372}
1049 1373
1050/* inject a fake call to Coro::State::_cctx_init into the execution */ 1374static int
1051/* _cctx_init should be careful, as it could be called at almost any time */ 1375slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
1054static void NOINLINE
1055cctx_prepare (pTHX_ coro_cctx *cctx)
1056{ 1376{
1057 dSP; 1377 *frame = cctx_ssl_frame;
1058 UNOP myop;
1059 1378
1379 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1380}
1381
1382/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1383static void ecb_noinline
1384cctx_prepare (pTHX)
1385{
1060 PL_top_env = &PL_start_env; 1386 PL_top_env = &PL_start_env;
1061 1387
1062 if (cctx->flags & CC_TRACE) 1388 if (cctx_current->flags & CC_TRACE)
1063 PL_runops = runops_trace; 1389 PL_runops = runops_trace;
1064 1390
1065 Zero (&myop, 1, UNOP); 1391 /* we already must be executing an SLF op, there is no other valid way
1066 myop.op_next = PL_op; 1392 * that can lead to creation of a new cctx */
1067 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1393 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1394 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1068 1395
1069 PUSHMARK (SP); 1396 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1070 EXTEND (SP, 2); 1397 cctx_ssl_frame = slf_frame;
1071 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1398
1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1399 slf_frame.prepare = slf_prepare_set_stacklevel;
1073 PUTBACK; 1400 slf_frame.check = slf_check_set_stacklevel;
1074 PL_op = (OP *)&myop;
1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1076 SPAGAIN;
1077} 1401}
1078 1402
1079/* the tail of transfer: execute stuff we can only do after a transfer */ 1403/* the tail of transfer: execute stuff we can only do after a transfer */
1080INLINE void 1404ecb_inline void
1081transfer_tail (pTHX) 1405transfer_tail (pTHX)
1082{ 1406{
1083 free_coro_mortal (aTHX); 1407 free_coro_mortal (aTHX);
1084} 1408}
1085 1409
… …
1100 /* normally we would need to skip the entersub here */ 1424 /* normally we would need to skip the entersub here */
1101 /* not doing so will re-execute it, which is exactly what we want */ 1425 /* not doing so will re-execute it, which is exactly what we want */
1102 /* PL_nop = PL_nop->op_next */ 1426 /* PL_nop = PL_nop->op_next */
1103 1427
1104 /* inject a fake subroutine call to cctx_init */ 1428 /* inject a fake subroutine call to cctx_init */
1105 cctx_prepare (aTHX_ (coro_cctx *)arg); 1429 cctx_prepare (aTHX);
1106 1430
1107 /* cctx_run is the alternative tail of transfer() */ 1431 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX); 1432 transfer_tail (aTHX);
1109 1433
1110 /* somebody or something will hit me for both perl_run and PL_restartop */ 1434 /* somebody or something will hit me for both perl_run and PL_restartop */
1111 PL_restartop = PL_op; 1435 PL_restartop = PL_op;
1112 perl_run (PL_curinterp); 1436 perl_run (PL_curinterp);
1437 /*
1438 * Unfortunately, there is no way to get at the return values of the
1439 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1440 * runtime errors here, as this is just a random interpreter, not a thread.
1441 */
1113 1442
1114 /* 1443 /*
1115 * If perl-run returns we assume exit() was being called or the coro 1444 * If perl-run returns we assume exit() was being called or the coro
1116 * fell off the end, which seems to be the only valid (non-bug) 1445 * fell off the end, which seems to be the only valid (non-bug)
1117 * reason for perl_run to return. We try to exit by jumping to the 1446 * reason for perl_run to return. We try to exit by jumping to the
1118 * bootstrap-time "top" top_env, as we cannot restore the "main" 1447 * bootstrap-time "top" top_env, as we cannot restore the "main"
1119 * coroutine as Coro has no such concept 1448 * coroutine as Coro has no such concept.
1449 * This actually isn't valid with the pthread backend, but OSes requiring
1450 * that backend are too broken to do it in a standards-compliant way.
1120 */ 1451 */
1121 PL_top_env = main_top_env; 1452 PL_top_env = main_top_env;
1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1453 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 } 1454 }
1124} 1455}
1125 1456
1126static coro_cctx * 1457static coro_cctx *
1127cctx_new () 1458cctx_new (void)
1128{ 1459{
1129 coro_cctx *cctx; 1460 coro_cctx *cctx;
1130 1461
1131 ++cctx_count; 1462 ++cctx_count;
1132 New (0, cctx, 1, coro_cctx); 1463 New (0, cctx, 1, coro_cctx);
… …
1138 return cctx; 1469 return cctx;
1139} 1470}
1140 1471
1141/* create a new cctx only suitable as source */ 1472/* create a new cctx only suitable as source */
1142static coro_cctx * 1473static coro_cctx *
1143cctx_new_empty () 1474cctx_new_empty (void)
1144{ 1475{
1145 coro_cctx *cctx = cctx_new (); 1476 coro_cctx *cctx = cctx_new ();
1146 1477
1147 cctx->sptr = 0; 1478 cctx->sptr = 0;
1148 coro_create (&cctx->cctx, 0, 0, 0, 0); 1479 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1150 return cctx; 1481 return cctx;
1151} 1482}
1152 1483
1153/* create a new cctx suitable as destination/running a perl interpreter */ 1484/* create a new cctx suitable as destination/running a perl interpreter */
1154static coro_cctx * 1485static coro_cctx *
1155cctx_new_run () 1486cctx_new_run (void)
1156{ 1487{
1157 coro_cctx *cctx = cctx_new (); 1488 coro_cctx *cctx = cctx_new ();
1158 void *stack_start; 1489 void *stack_start;
1159 size_t stack_size; 1490 size_t stack_size;
1160 1491
1161#if HAVE_MMAP 1492#if HAVE_MMAP
1162 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1493 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1163 /* mmap supposedly does allocate-on-write for us */ 1494 /* mmap supposedly does allocate-on-write for us */
1164 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1495 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1165 1496
1166 if (cctx->sptr != (void *)-1) 1497 if (cctx->sptr != (void *)-1)
1167 { 1498 {
1168 #if CORO_STACKGUARD 1499 #if CORO_STACKGUARD
1169 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1500 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1201cctx_destroy (coro_cctx *cctx) 1532cctx_destroy (coro_cctx *cctx)
1202{ 1533{
1203 if (!cctx) 1534 if (!cctx)
1204 return; 1535 return;
1205 1536
1537 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1538
1206 --cctx_count; 1539 --cctx_count;
1207 coro_destroy (&cctx->cctx); 1540 coro_destroy (&cctx->cctx);
1208 1541
1209 /* coro_transfer creates new, empty cctx's */ 1542 /* coro_transfer creates new, empty cctx's */
1210 if (cctx->sptr) 1543 if (cctx->sptr)
… …
1228#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1561#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1229 1562
1230static coro_cctx * 1563static coro_cctx *
1231cctx_get (pTHX) 1564cctx_get (pTHX)
1232{ 1565{
1233 while (expect_true (cctx_first)) 1566 while (ecb_expect_true (cctx_first))
1234 { 1567 {
1235 coro_cctx *cctx = cctx_first; 1568 coro_cctx *cctx = cctx_first;
1236 cctx_first = cctx->next; 1569 cctx_first = cctx->next;
1237 --cctx_idle; 1570 --cctx_idle;
1238 1571
1239 if (expect_true (!CCTX_EXPIRED (cctx))) 1572 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1240 return cctx; 1573 return cctx;
1241 1574
1242 cctx_destroy (cctx); 1575 cctx_destroy (cctx);
1243 } 1576 }
1244 1577
… …
1249cctx_put (coro_cctx *cctx) 1582cctx_put (coro_cctx *cctx)
1250{ 1583{
1251 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1584 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1252 1585
1253 /* free another cctx if overlimit */ 1586 /* free another cctx if overlimit */
1254 if (expect_false (cctx_idle >= cctx_max_idle)) 1587 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1255 { 1588 {
1256 coro_cctx *first = cctx_first; 1589 coro_cctx *first = cctx_first;
1257 cctx_first = first->next; 1590 cctx_first = first->next;
1258 --cctx_idle; 1591 --cctx_idle;
1259 1592
… …
1270static void 1603static void
1271transfer_check (pTHX_ struct coro *prev, struct coro *next) 1604transfer_check (pTHX_ struct coro *prev, struct coro *next)
1272{ 1605{
1273 /* TODO: throwing up here is considered harmful */ 1606 /* TODO: throwing up here is considered harmful */
1274 1607
1275 if (expect_true (prev != next)) 1608 if (ecb_expect_true (prev != next))
1276 { 1609 {
1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1610 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1611 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1279 1612
1280 if (expect_false (next->flags & CF_RUNNING)) 1613 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1282
1283 if (expect_false (next->flags & CF_DESTROYED))
1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1614 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1285 1615
1286#if !PERL_VERSION_ATLEAST (5,10,0) 1616#if !PERL_VERSION_ATLEAST (5,10,0)
1287 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1617 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1618 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1289#endif 1619#endif
1290 } 1620 }
1291} 1621}
1292 1622
1293/* always use the TRANSFER macro */ 1623/* always use the TRANSFER macro */
1294static void NOINLINE /* noinline so we have a fixed stackframe */ 1624static void ecb_noinline /* noinline so we have a fixed stackframe */
1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1625transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1296{ 1626{
1297 dSTACKLEVEL; 1627 dSTACKLEVEL;
1298 1628
1299 /* sometimes transfer is only called to set idle_sp */ 1629 /* sometimes transfer is only called to set idle_sp */
1300 if (expect_false (!next)) 1630 if (ecb_expect_false (!prev))
1301 { 1631 {
1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1632 cctx_current->idle_sp = STACKLEVEL;
1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1633 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1304 } 1634 }
1305 else if (expect_true (prev != next)) 1635 else if (ecb_expect_true (prev != next))
1306 { 1636 {
1307 coro_cctx *prev__cctx; 1637 coro_cctx *cctx_prev;
1308 1638
1309 if (expect_false (prev->flags & CF_NEW)) 1639 if (ecb_expect_false (prev->flags & CF_NEW))
1310 { 1640 {
1311 /* create a new empty/source context */ 1641 /* create a new empty/source context */
1312 prev->cctx = cctx_new_empty ();
1313 prev->flags &= ~CF_NEW; 1642 prev->flags &= ~CF_NEW;
1314 prev->flags |= CF_RUNNING; 1643 prev->flags |= CF_RUNNING;
1315 } 1644 }
1316 1645
1317 prev->flags &= ~CF_RUNNING; 1646 prev->flags &= ~CF_RUNNING;
1318 next->flags |= CF_RUNNING; 1647 next->flags |= CF_RUNNING;
1319 1648
1320 /* first get rid of the old state */ 1649 /* first get rid of the old state */
1321 save_perl (aTHX_ prev); 1650 save_perl (aTHX_ prev);
1322 1651
1323 if (expect_false (next->flags & CF_NEW)) 1652 if (ecb_expect_false (next->flags & CF_NEW))
1324 { 1653 {
1325 /* need to start coroutine */ 1654 /* need to start coroutine */
1326 next->flags &= ~CF_NEW; 1655 next->flags &= ~CF_NEW;
1327 /* setup coroutine call */ 1656 /* setup coroutine call */
1328 coro_setup (aTHX_ next); 1657 init_perl (aTHX_ next);
1329 } 1658 }
1330 else 1659 else
1331 load_perl (aTHX_ next); 1660 load_perl (aTHX_ next);
1332 1661
1333 prev__cctx = prev->cctx;
1334
1335 /* possibly untie and reuse the cctx */ 1662 /* possibly untie and reuse the cctx */
1336 if (expect_true ( 1663 if (ecb_expect_true (
1337 prev__cctx->idle_sp == (void *)stacklevel 1664 cctx_current->idle_sp == STACKLEVEL
1338 && !(prev__cctx->flags & CC_TRACE) 1665 && !(cctx_current->flags & CC_TRACE)
1339 && !force_cctx 1666 && !force_cctx
1340 )) 1667 ))
1341 { 1668 {
1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1669 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1670 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1344 1671
1345 prev->cctx = 0;
1346
1347 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1672 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1348 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1673 /* without this the next cctx_get might destroy the running cctx while still in use */
1349 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1674 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1350 if (!next->cctx) 1675 if (ecb_expect_true (!next->cctx))
1351 next->cctx = cctx_get (aTHX); 1676 next->cctx = cctx_get (aTHX);
1352 1677
1353 cctx_put (prev__cctx); 1678 cctx_put (cctx_current);
1354 } 1679 }
1680 else
1681 prev->cctx = cctx_current;
1355 1682
1356 ++next->usecount; 1683 ++next->usecount;
1357 1684
1358 if (expect_true (!next->cctx)) 1685 cctx_prev = cctx_current;
1359 next->cctx = cctx_get (aTHX); 1686 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1360 1687
1361 if (expect_false (prev__cctx != next->cctx)) 1688 next->cctx = 0;
1689
1690 if (ecb_expect_false (cctx_prev != cctx_current))
1362 { 1691 {
1363 prev__cctx->top_env = PL_top_env; 1692 cctx_prev->top_env = PL_top_env;
1364 PL_top_env = next->cctx->top_env; 1693 PL_top_env = cctx_current->top_env;
1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1694 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1366 } 1695 }
1367 1696
1368 transfer_tail (aTHX); 1697 transfer_tail (aTHX);
1369 } 1698 }
1370} 1699}
… …
1372#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1701#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1702#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1374 1703
1375/** high level stuff ********************************************************/ 1704/** high level stuff ********************************************************/
1376 1705
1706/* this function is actually Coro, not Coro::State, but we call it from here */
1707/* because it is convenient - but it hasn't been declared yet for that reason */
1377static int 1708static void
1709coro_call_on_destroy (pTHX_ struct coro *coro);
1710
1711static void
1378coro_state_destroy (pTHX_ struct coro *coro) 1712coro_state_destroy (pTHX_ struct coro *coro)
1379{ 1713{
1380 if (coro->flags & CF_DESTROYED) 1714 if (coro->flags & CF_ZOMBIE)
1381 return 0; 1715 return;
1382 1716
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro); 1717 slf_destroy (aTHX_ coro);
1385 1718
1386 coro->flags |= CF_DESTROYED; 1719 coro->flags |= CF_ZOMBIE;
1387 1720
1388 if (coro->flags & CF_READY) 1721 if (coro->flags & CF_READY)
1389 { 1722 {
1390 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1723 /* reduce nready, as destroying a ready coro effectively unreadies it */
1391 /* alternative: look through all ready queues and remove the coro */ 1724 /* alternative: look through all ready queues and remove the coro */
1392 --coro_nready; 1725 --coro_nready;
1393 } 1726 }
1394 else 1727 else
1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1728 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1396 1729
1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1398 {
1399 struct coro temp;
1400
1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1402
1403 save_perl (aTHX_ &temp);
1404 load_perl (aTHX_ coro);
1405
1406 coro_destruct (aTHX_ coro);
1407
1408 load_perl (aTHX_ &temp);
1409
1410 coro->slot = 0;
1411 }
1412
1413 cctx_destroy (coro->cctx);
1414 SvREFCNT_dec (coro->args);
1415
1416 if (coro->next) coro->next->prev = coro->prev; 1730 if (coro->next) coro->next->prev = coro->prev;
1417 if (coro->prev) coro->prev->next = coro->next; 1731 if (coro->prev) coro->prev->next = coro->next;
1418 if (coro == coro_first) coro_first = coro->next; 1732 if (coro == coro_first) coro_first = coro->next;
1419 1733
1420 return 1; 1734 if (coro->mainstack
1735 && coro->mainstack != main_mainstack
1736 && coro->slot
1737 && !PL_dirty)
1738 destroy_perl (aTHX_ coro);
1739
1740 cctx_destroy (coro->cctx);
1741 SvREFCNT_dec (coro->startcv);
1742 SvREFCNT_dec (coro->args);
1743 SvREFCNT_dec (coro->swap_sv);
1744 SvREFCNT_dec (CORO_THROW);
1745
1746 coro_call_on_destroy (aTHX_ coro);
1747
1748 /* more destruction mayhem in coro_state_free */
1421} 1749}
1422 1750
1423static int 1751static int
1424coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1752coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1425{ 1753{
1426 struct coro *coro = (struct coro *)mg->mg_ptr; 1754 struct coro *coro = (struct coro *)mg->mg_ptr;
1427 mg->mg_ptr = 0; 1755 mg->mg_ptr = 0;
1428 1756
1429 coro->hv = 0;
1430
1431 if (--coro->refcnt < 0)
1432 {
1433 coro_state_destroy (aTHX_ coro); 1757 coro_state_destroy (aTHX_ coro);
1758 SvREFCNT_dec (coro->on_destroy);
1759 SvREFCNT_dec (coro->status);
1760
1434 Safefree (coro); 1761 Safefree (coro);
1435 }
1436 1762
1437 return 0; 1763 return 0;
1438} 1764}
1439 1765
1440static int 1766static int ecb_cold
1441coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1767coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1442{ 1768{
1443 struct coro *coro = (struct coro *)mg->mg_ptr; 1769 /* called when perl clones the current process the slow way (windows process emulation) */
1444 1770 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1445 ++coro->refcnt; 1771 mg->mg_ptr = 0;
1772 mg->mg_virtual = 0;
1446 1773
1447 return 0; 1774 return 0;
1448} 1775}
1449 1776
1450static MGVTBL coro_state_vtbl = { 1777static MGVTBL coro_state_vtbl = {
… …
1475 TRANSFER (ta, 1); 1802 TRANSFER (ta, 1);
1476} 1803}
1477 1804
1478/** Coro ********************************************************************/ 1805/** Coro ********************************************************************/
1479 1806
1480INLINE void 1807ecb_inline void
1481coro_enq (pTHX_ struct coro *coro) 1808coro_enq (pTHX_ struct coro *coro)
1482{ 1809{
1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1810 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1484}
1485 1811
1486INLINE SV * 1812 SvREFCNT_inc_NN (coro->hv);
1813
1814 coro->next_ready = 0;
1815 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1816 ready [1] = coro;
1817}
1818
1819ecb_inline struct coro *
1487coro_deq (pTHX) 1820coro_deq (pTHX)
1488{ 1821{
1489 int prio; 1822 int prio;
1490 1823
1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1824 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1492 if (AvFILLp (coro_ready [prio]) >= 0) 1825 {
1493 return av_shift (coro_ready [prio]); 1826 struct coro **ready = coro_ready [prio];
1827
1828 if (ready [0])
1829 {
1830 struct coro *coro = ready [0];
1831 ready [0] = coro->next_ready;
1832 return coro;
1833 }
1834 }
1494 1835
1495 return 0; 1836 return 0;
1837}
1838
1839static void
1840invoke_sv_ready_hook_helper (void)
1841{
1842 dTHX;
1843 dSP;
1844
1845 ENTER;
1846 SAVETMPS;
1847
1848 PUSHMARK (SP);
1849 PUTBACK;
1850 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1851
1852 FREETMPS;
1853 LEAVE;
1496} 1854}
1497 1855
1498static int 1856static int
1499api_ready (pTHX_ SV *coro_sv) 1857api_ready (pTHX_ SV *coro_sv)
1500{ 1858{
1501 struct coro *coro;
1502 SV *sv_hook;
1503 void (*xs_hook)(void);
1504
1505 if (SvROK (coro_sv))
1506 coro_sv = SvRV (coro_sv);
1507
1508 coro = SvSTATE (coro_sv); 1859 struct coro *coro = SvSTATE (coro_sv);
1509 1860
1510 if (coro->flags & CF_READY) 1861 if (coro->flags & CF_READY)
1511 return 0; 1862 return 0;
1512 1863
1513 coro->flags |= CF_READY; 1864 coro->flags |= CF_READY;
1514 1865
1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1517
1518 coro_enq (aTHX_ coro); 1866 coro_enq (aTHX_ coro);
1519 ++coro_nready;
1520 1867
1521 if (sv_hook) 1868 if (!coro_nready++)
1522 { 1869 if (coroapi.readyhook)
1523 dSP; 1870 coroapi.readyhook ();
1524
1525 ENTER;
1526 SAVETMPS;
1527
1528 PUSHMARK (SP);
1529 PUTBACK;
1530 call_sv (sv_hook, G_DISCARD);
1531 SPAGAIN;
1532
1533 FREETMPS;
1534 LEAVE;
1535 }
1536
1537 if (xs_hook)
1538 xs_hook ();
1539 1871
1540 return 1; 1872 return 1;
1541} 1873}
1542 1874
1543static int 1875static int
1544api_is_ready (pTHX_ SV *coro_sv) 1876api_is_ready (pTHX_ SV *coro_sv)
1545{ 1877{
1546 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1878 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1547} 1879}
1548 1880
1549INLINE void 1881/* expects to own a reference to next->hv */
1882ecb_inline void
1550prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1883prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1551{ 1884{
1552 SV *prev_sv, *next_sv;
1553
1554 for (;;)
1555 {
1556 next_sv = coro_deq (aTHX);
1557
1558 /* nothing to schedule: call the idle handler */
1559 if (expect_false (!next_sv))
1560 {
1561 dSP;
1562
1563 ENTER;
1564 SAVETMPS;
1565
1566 PUSHMARK (SP);
1567 PUTBACK;
1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1570
1571 FREETMPS;
1572 LEAVE;
1573 continue;
1574 }
1575
1576 ta->next = SvSTATE_hv (next_sv);
1577
1578 /* cannot transfer to destroyed coros, skip and look for next */
1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1580 {
1581 SvREFCNT_dec (next_sv);
1582 /* coro_nready has already been taken care of by destroy */
1583 continue;
1584 }
1585
1586 --coro_nready;
1587 break;
1588 }
1589
1590 /* free this only after the transfer */
1591 prev_sv = SvRV (coro_current); 1885 SV *prev_sv = SvRV (coro_current);
1886
1592 ta->prev = SvSTATE_hv (prev_sv); 1887 ta->prev = SvSTATE_hv (prev_sv);
1888 ta->next = next;
1889
1593 TRANSFER_CHECK (*ta); 1890 TRANSFER_CHECK (*ta);
1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1891
1595 ta->next->flags &= ~CF_READY;
1596 SvRV_set (coro_current, next_sv); 1892 SvRV_set (coro_current, (SV *)next->hv);
1597 1893
1598 free_coro_mortal (aTHX); 1894 free_coro_mortal (aTHX);
1599 coro_mortal = prev_sv; 1895 coro_mortal = prev_sv;
1600} 1896}
1601 1897
1602INLINE void 1898static void
1899prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1900{
1901 for (;;)
1902 {
1903 struct coro *next = coro_deq (aTHX);
1904
1905 if (ecb_expect_true (next))
1906 {
1907 /* cannot transfer to destroyed coros, skip and look for next */
1908 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1909 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1910 else
1911 {
1912 next->flags &= ~CF_READY;
1913 --coro_nready;
1914
1915 prepare_schedule_to (aTHX_ ta, next);
1916 break;
1917 }
1918 }
1919 else
1920 {
1921 /* nothing to schedule: call the idle handler */
1922 if (SvROK (sv_idle)
1923 && SvOBJECT (SvRV (sv_idle)))
1924 {
1925 if (SvRV (sv_idle) == SvRV (coro_current))
1926 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1927
1928 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1929 api_ready (aTHX_ SvRV (sv_idle));
1930 --coro_nready;
1931 }
1932 else
1933 {
1934 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1935 dSP;
1936
1937 ENTER;
1938 SAVETMPS;
1939
1940 PUSHMARK (SP);
1941 PUTBACK;
1942 call_sv (sv_idle, G_VOID | G_DISCARD);
1943
1944 FREETMPS;
1945 LEAVE;
1946 }
1947 }
1948 }
1949}
1950
1951ecb_inline void
1603prepare_cede (pTHX_ struct coro_transfer_args *ta) 1952prepare_cede (pTHX_ struct coro_transfer_args *ta)
1604{ 1953{
1605 api_ready (aTHX_ coro_current); 1954 api_ready (aTHX_ coro_current);
1606 prepare_schedule (aTHX_ ta); 1955 prepare_schedule (aTHX_ ta);
1607} 1956}
1608 1957
1609INLINE void 1958ecb_inline void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1959prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{ 1960{
1612 SV *prev = SvRV (coro_current); 1961 SV *prev = SvRV (coro_current);
1613 1962
1614 if (coro_nready) 1963 if (coro_nready)
… …
1627 1976
1628 prepare_schedule (aTHX_ &ta); 1977 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1); 1978 TRANSFER (ta, 1);
1630} 1979}
1631 1980
1981static void
1982api_schedule_to (pTHX_ SV *coro_sv)
1983{
1984 struct coro_transfer_args ta;
1985 struct coro *next = SvSTATE (coro_sv);
1986
1987 SvREFCNT_inc_NN (coro_sv);
1988 prepare_schedule_to (aTHX_ &ta, next);
1989}
1990
1632static int 1991static int
1633api_cede (pTHX) 1992api_cede (pTHX)
1634{ 1993{
1635 struct coro_transfer_args ta; 1994 struct coro_transfer_args ta;
1636 1995
1637 prepare_cede (aTHX_ &ta); 1996 prepare_cede (aTHX_ &ta);
1638 1997
1639 if (expect_true (ta.prev != ta.next)) 1998 if (ecb_expect_true (ta.prev != ta.next))
1640 { 1999 {
1641 TRANSFER (ta, 1); 2000 TRANSFER (ta, 1);
1642 return 1; 2001 return 1;
1643 } 2002 }
1644 else 2003 else
… …
1663static void 2022static void
1664api_trace (pTHX_ SV *coro_sv, int flags) 2023api_trace (pTHX_ SV *coro_sv, int flags)
1665{ 2024{
1666 struct coro *coro = SvSTATE (coro_sv); 2025 struct coro *coro = SvSTATE (coro_sv);
1667 2026
2027 if (coro->flags & CF_RUNNING)
2028 croak ("cannot enable tracing on a running coroutine, caught");
2029
1668 if (flags & CC_TRACE) 2030 if (flags & CC_TRACE)
1669 { 2031 {
1670 if (!coro->cctx) 2032 if (!coro->cctx)
1671 coro->cctx = cctx_new_run (); 2033 coro->cctx = cctx_new_run ();
1672 else if (!(coro->cctx->flags & CC_TRACE)) 2034 else if (!(coro->cctx->flags & CC_TRACE))
1673 croak ("cannot enable tracing on coroutine with custom stack,"); 2035 croak ("cannot enable tracing on coroutine with custom stack, caught");
1674 2036
1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2037 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1676 } 2038 }
1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2039 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1678 { 2040 {
… …
1681 if (coro->flags & CF_RUNNING) 2043 if (coro->flags & CF_RUNNING)
1682 PL_runops = RUNOPS_DEFAULT; 2044 PL_runops = RUNOPS_DEFAULT;
1683 else 2045 else
1684 coro->slot->runops = RUNOPS_DEFAULT; 2046 coro->slot->runops = RUNOPS_DEFAULT;
1685 } 2047 }
2048}
2049
2050static void
2051coro_push_av (pTHX_ AV *av, I32 gimme_v)
2052{
2053 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2054 {
2055 dSP;
2056
2057 if (gimme_v == G_SCALAR)
2058 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2059 else
2060 {
2061 int i;
2062 EXTEND (SP, AvFILLp (av) + 1);
2063
2064 for (i = 0; i <= AvFILLp (av); ++i)
2065 PUSHs (AvARRAY (av)[i]);
2066 }
2067
2068 PUTBACK;
2069 }
2070}
2071
2072static void
2073coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2074{
2075 if (!coro->on_destroy)
2076 coro->on_destroy = newAV ();
2077
2078 av_push (coro->on_destroy, cb);
2079}
2080
2081static void
2082slf_destroy_join (pTHX_ struct CoroSLF *frame)
2083{
2084 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2085}
2086
2087static int
2088slf_check_join (pTHX_ struct CoroSLF *frame)
2089{
2090 struct coro *coro = (struct coro *)frame->data;
2091
2092 if (!coro->status)
2093 return 1;
2094
2095 frame->destroy = 0;
2096
2097 coro_push_av (aTHX_ coro->status, GIMME_V);
2098
2099 SvREFCNT_dec ((SV *)coro->hv);
2100
2101 return 0;
2102}
2103
2104static void
2105slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2106{
2107 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2108
2109 if (items > 1)
2110 croak ("join called with too many arguments");
2111
2112 if (coro->status)
2113 frame->prepare = prepare_nop;
2114 else
2115 {
2116 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2117 frame->prepare = prepare_schedule;
2118 }
2119
2120 frame->check = slf_check_join;
2121 frame->destroy = slf_destroy_join;
2122 frame->data = (void *)coro;
2123 SvREFCNT_inc (coro->hv);
2124}
2125
2126static void
2127coro_call_on_destroy (pTHX_ struct coro *coro)
2128{
2129 AV *od = coro->on_destroy;
2130
2131 if (!od)
2132 return;
2133
2134 while (AvFILLp (od) >= 0)
2135 {
2136 SV *cb = sv_2mortal (av_pop (od));
2137
2138 /* coro hv's (and only hv's at the moment) are supported as well */
2139 if (SvSTATEhv_p (aTHX_ cb))
2140 api_ready (aTHX_ cb);
2141 else
2142 {
2143 dSP; /* don't disturb outer sp */
2144 PUSHMARK (SP);
2145
2146 if (coro->status)
2147 {
2148 PUTBACK;
2149 coro_push_av (aTHX_ coro->status, G_ARRAY);
2150 SPAGAIN;
2151 }
2152
2153 PUTBACK;
2154 call_sv (cb, G_VOID | G_DISCARD);
2155 }
2156 }
2157}
2158
2159static void
2160coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2161{
2162 AV *av;
2163
2164 if (coro->status)
2165 {
2166 av = coro->status;
2167 av_clear (av);
2168 }
2169 else
2170 av = coro->status = newAV ();
2171
2172 /* items are actually not so common, so optimise for this case */
2173 if (items)
2174 {
2175 int i;
2176
2177 av_extend (av, items - 1);
2178
2179 for (i = 0; i < items; ++i)
2180 av_push (av, SvREFCNT_inc_NN (arg [i]));
2181 }
2182}
2183
2184static void
2185slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2186{
2187 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2188 api_ready (aTHX_ sv_manager);
2189
2190 frame->prepare = prepare_schedule;
2191 frame->check = slf_check_repeat;
2192
2193 /* as a minor optimisation, we could unwind all stacks here */
2194 /* but that puts extra pressure on pp_slf, and is not worth much */
2195 /*coro_unwind_stacks (aTHX);*/
2196}
2197
2198static void
2199slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2200{
2201 HV *coro_hv = (HV *)SvRV (coro_current);
2202
2203 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2204 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2205}
2206
2207static void
2208slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2209{
2210 HV *coro_hv;
2211 struct coro *coro;
2212
2213 if (items <= 0)
2214 croak ("Coro::cancel called without coro object,");
2215
2216 coro = SvSTATE (arg [0]);
2217 coro_hv = coro->hv;
2218
2219 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2220
2221 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2222 {
2223 /* coro currently busy cancelling something, so just notify it */
2224 coro->slf_frame.data = (void *)coro;
2225
2226 frame->prepare = prepare_nop;
2227 frame->check = slf_check_nop;
2228 }
2229 else if (coro_hv == (HV *)SvRV (coro_current))
2230 {
2231 /* cancelling the current coro is allowed, and equals terminate */
2232 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2233 }
2234 else
2235 {
2236 struct coro *self = SvSTATE_current;
2237
2238 /* otherwise we cancel directly, purely for speed reasons
2239 * unfortunately, this requires some magic trickery, as
2240 * somebody else could cancel us, so we have to fight the cancellation.
2241 * this is ugly, and hopefully fully worth the extra speed.
2242 * besides, I can't get the slow-but-safe version working...
2243 */
2244 slf_frame.data = 0;
2245 self->flags |= CF_NOCANCEL;
2246 coro_state_destroy (aTHX_ coro);
2247 self->flags &= ~CF_NOCANCEL;
2248
2249 if (slf_frame.data)
2250 {
2251 /* while we were busy we have been cancelled, so terminate */
2252 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2253 }
2254 else
2255 {
2256 frame->prepare = prepare_nop;
2257 frame->check = slf_check_nop;
2258 }
2259 }
2260}
2261
2262static int
2263slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2264{
2265 frame->prepare = 0;
2266 coro_unwind_stacks (aTHX);
2267
2268 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2269
2270 return 1;
2271}
2272
2273static int
2274safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2275{
2276 if (coro->cctx)
2277 croak ("coro inside C callback, unable to cancel at this time, caught");
2278
2279 if (coro->flags & CF_NEW)
2280 {
2281 coro_set_status (aTHX_ coro, arg, items);
2282 coro_state_destroy (aTHX_ coro);
2283 }
2284 else
2285 {
2286 if (!coro->slf_frame.prepare)
2287 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2288
2289 slf_destroy (aTHX_ coro);
2290
2291 coro_set_status (aTHX_ coro, arg, items);
2292 coro->slf_frame.prepare = prepare_nop;
2293 coro->slf_frame.check = slf_check_safe_cancel;
2294
2295 api_ready (aTHX_ (SV *)coro->hv);
2296 }
2297
2298 return 1;
2299}
2300
2301/*****************************************************************************/
2302/* async pool handler */
2303
2304static int
2305slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2306{
2307 HV *hv = (HV *)SvRV (coro_current);
2308 struct coro *coro = (struct coro *)frame->data;
2309
2310 if (!coro->invoke_cb)
2311 return 1; /* loop till we have invoke */
2312 else
2313 {
2314 hv_store (hv, "desc", sizeof ("desc") - 1,
2315 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2316
2317 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2318
2319 {
2320 dSP;
2321 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2322 PUTBACK;
2323 }
2324
2325 SvREFCNT_dec (GvAV (PL_defgv));
2326 GvAV (PL_defgv) = coro->invoke_av;
2327 coro->invoke_av = 0;
2328
2329 return 0;
2330 }
2331}
2332
2333static void
2334slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2335{
2336 HV *hv = (HV *)SvRV (coro_current);
2337 struct coro *coro = SvSTATE_hv ((SV *)hv);
2338
2339 if (ecb_expect_true (coro->saved_deffh))
2340 {
2341 /* subsequent iteration */
2342 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2343 coro->saved_deffh = 0;
2344
2345 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2346 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2347 {
2348 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2349 return;
2350 }
2351 else
2352 {
2353 av_clear (GvAV (PL_defgv));
2354 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2355
2356 coro->prio = 0;
2357
2358 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2359 api_trace (aTHX_ coro_current, 0);
2360
2361 frame->prepare = prepare_schedule;
2362 av_push (av_async_pool, SvREFCNT_inc (hv));
2363 }
2364 }
2365 else
2366 {
2367 /* first iteration, simply fall through */
2368 frame->prepare = prepare_nop;
2369 }
2370
2371 frame->check = slf_check_pool_handler;
2372 frame->data = (void *)coro;
2373}
2374
2375/*****************************************************************************/
2376/* rouse callback */
2377
2378#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2379
2380static void
2381coro_rouse_callback (pTHX_ CV *cv)
2382{
2383 dXSARGS;
2384 SV *data = (SV *)S_GENSUB_ARG;
2385
2386 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2387 {
2388 /* first call, set args */
2389 SV *coro = SvRV (data);
2390 AV *av = newAV ();
2391
2392 SvRV_set (data, (SV *)av);
2393
2394 /* better take a full copy of the arguments */
2395 while (items--)
2396 av_store (av, items, newSVsv (ST (items)));
2397
2398 api_ready (aTHX_ coro);
2399 SvREFCNT_dec (coro);
2400 }
2401
2402 XSRETURN_EMPTY;
2403}
2404
2405static int
2406slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2407{
2408 SV *data = (SV *)frame->data;
2409
2410 if (CORO_THROW)
2411 return 0;
2412
2413 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2414 return 1;
2415
2416 /* now push all results on the stack */
2417 {
2418 dSP;
2419 AV *av = (AV *)SvRV (data);
2420 int i;
2421
2422 EXTEND (SP, AvFILLp (av) + 1);
2423 for (i = 0; i <= AvFILLp (av); ++i)
2424 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2425
2426 /* we have stolen the elements, so set length to zero and free */
2427 AvFILLp (av) = -1;
2428 av_undef (av);
2429
2430 PUTBACK;
2431 }
2432
2433 return 0;
2434}
2435
2436static void
2437slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2438{
2439 SV *cb;
2440
2441 if (items)
2442 cb = arg [0];
2443 else
2444 {
2445 struct coro *coro = SvSTATE_current;
2446
2447 if (!coro->rouse_cb)
2448 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2449
2450 cb = sv_2mortal (coro->rouse_cb);
2451 coro->rouse_cb = 0;
2452 }
2453
2454 if (!SvROK (cb)
2455 || SvTYPE (SvRV (cb)) != SVt_PVCV
2456 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2457 croak ("Coro::rouse_wait called with illegal callback argument,");
2458
2459 {
2460 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2461 SV *data = (SV *)S_GENSUB_ARG;
2462
2463 frame->data = (void *)data;
2464 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2465 frame->check = slf_check_rouse_wait;
2466 }
2467}
2468
2469static SV *
2470coro_new_rouse_cb (pTHX)
2471{
2472 HV *hv = (HV *)SvRV (coro_current);
2473 struct coro *coro = SvSTATE_hv (hv);
2474 SV *data = newRV_inc ((SV *)hv);
2475 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2476
2477 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2478 SvREFCNT_dec (data); /* magicext increases the refcount */
2479
2480 SvREFCNT_dec (coro->rouse_cb);
2481 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2482
2483 return cb;
1686} 2484}
1687 2485
1688/*****************************************************************************/ 2486/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */ 2487/* schedule-like-function opcode (SLF) */
1690 2488
… …
1714 2512
1715 RETURNOP (slf_restore.op_first); 2513 RETURNOP (slf_restore.op_first);
1716} 2514}
1717 2515
1718static void 2516static void
1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1720{
1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1722}
1723
1724static void
1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1726{
1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2517slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{ 2518{
1737 SV **arg = (SV **)slf_frame.data; 2519 SV **arg = (SV **)slf_frame.data;
1738 2520
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2521 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1756 frame->prepare = prepare_schedule; 2538 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop; 2539 frame->check = slf_check_nop;
1758} 2540}
1759 2541
1760static void 2542static void
2543slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2544{
2545 struct coro *next = (struct coro *)slf_frame.data;
2546
2547 SvREFCNT_inc_NN (next->hv);
2548 prepare_schedule_to (aTHX_ ta, next);
2549}
2550
2551static void
2552slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2553{
2554 if (!items)
2555 croak ("Coro::schedule_to expects a coroutine argument, caught");
2556
2557 frame->data = (void *)SvSTATE (arg [0]);
2558 frame->prepare = slf_prepare_schedule_to;
2559 frame->check = slf_check_nop;
2560}
2561
2562static void
2563slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2564{
2565 api_ready (aTHX_ SvRV (coro_current));
2566
2567 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2568}
2569
2570static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2571slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{ 2572{
1763 frame->prepare = prepare_cede; 2573 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop; 2574 frame->check = slf_check_nop;
1765} 2575}
… …
1769{ 2579{
1770 frame->prepare = prepare_cede_notself; 2580 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop; 2581 frame->check = slf_check_nop;
1772} 2582}
1773 2583
1774/* we hijack an hopefully unused CV flag for our purposes */ 2584/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1775#define CVf_SLF 0x4000 2585static void
2586slf_destroy (pTHX_ struct coro *coro)
2587{
2588 /* this callback is reserved for slf functions needing to do cleanup */
2589 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2590 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2591
2592 /*
2593 * The on_destroy above most likely is from an SLF call.
2594 * Since by definition the SLF call will not finish when we destroy
2595 * the coro, we will have to force-finish it here, otherwise
2596 * cleanup functions cannot call SLF functions.
2597 */
2598 coro->slf_frame.prepare = 0;
2599}
1776 2600
1777/* 2601/*
1778 * these not obviously related functions are all rolled into one 2602 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same 2603 * function to increase chances that they all will call transfer with the same
1780 * stack offset 2604 * stack offset
… …
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2610 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787 2611
1788 /* set up the slf frame, unless it has already been set-up */ 2612 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */ 2613 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */ 2614 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare)) 2615 if (ecb_expect_true (!slf_frame.prepare))
1792 { 2616 {
1793 /* first iteration */ 2617 /* first iteration */
1794 dSP; 2618 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1; 2619 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */ 2620 int items = SP - arg; /* args without function object */
… …
1836 } 2660 }
1837 while (slf_frame.check (aTHX_ &slf_frame)); 2661 while (slf_frame.check (aTHX_ &slf_frame));
1838 2662
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2663 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840 2664
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */ 2665 /* exception handling */
1860 if (expect_false (coro_throw)) 2666 if (ecb_expect_false (CORO_THROW))
1861 { 2667 {
1862 SV *exception = sv_2mortal (coro_throw); 2668 SV *exception = sv_2mortal (CORO_THROW);
1863 2669
1864 coro_throw = 0; 2670 CORO_THROW = 0;
1865 sv_setsv (ERRSV, exception); 2671 sv_setsv (ERRSV, exception);
1866 croak (0); 2672 croak (0);
2673 }
2674
2675 /* return value handling - mostly like entersub */
2676 /* make sure we put something on the stack in scalar context */
2677 if (GIMME_V == G_SCALAR
2678 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2679 {
2680 dSP;
2681 SV **bot = PL_stack_base + checkmark;
2682
2683 if (sp == bot) /* too few, push undef */
2684 bot [1] = &PL_sv_undef;
2685 else /* too many, take last one */
2686 bot [1] = *sp;
2687
2688 SP = bot + 1;
2689
2690 PUTBACK;
1867 } 2691 }
1868 2692
1869 return NORMAL; 2693 return NORMAL;
1870} 2694}
1871 2695
… …
1899 if (PL_op->op_flags & OPf_STACKED) 2723 if (PL_op->op_flags & OPf_STACKED)
1900 { 2724 {
1901 if (items > slf_arga) 2725 if (items > slf_arga)
1902 { 2726 {
1903 slf_arga = items; 2727 slf_arga = items;
1904 free (slf_argv); 2728 Safefree (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *)); 2729 New (0, slf_argv, slf_arga, SV *);
1906 } 2730 }
1907 2731
1908 slf_argc = items; 2732 slf_argc = items;
1909 2733
1910 for (i = 0; i < items; ++i) 2734 for (i = 0; i < items; ++i)
… …
1912 } 2736 }
1913 else 2737 else
1914 slf_argc = 0; 2738 slf_argc = 0;
1915 2739
1916 PL_op->op_ppaddr = pp_slf; 2740 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2741 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1918 2742
1919 PL_op = (OP *)&slf_restore; 2743 PL_op = (OP *)&slf_restore;
2744}
2745
2746/*****************************************************************************/
2747/* dynamic wind */
2748
2749static void
2750on_enterleave_call (pTHX_ SV *cb)
2751{
2752 dSP;
2753
2754 PUSHSTACK;
2755
2756 PUSHMARK (SP);
2757 PUTBACK;
2758 call_sv (cb, G_VOID | G_DISCARD);
2759 SPAGAIN;
2760
2761 POPSTACK;
2762}
2763
2764static SV *
2765coro_avp_pop_and_free (pTHX_ AV **avp)
2766{
2767 AV *av = *avp;
2768 SV *res = av_pop (av);
2769
2770 if (AvFILLp (av) < 0)
2771 {
2772 *avp = 0;
2773 SvREFCNT_dec (av);
2774 }
2775
2776 return res;
2777}
2778
2779static void
2780coro_pop_on_enter (pTHX_ void *coro)
2781{
2782 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2783 SvREFCNT_dec (cb);
2784}
2785
2786static void
2787coro_pop_on_leave (pTHX_ void *coro)
2788{
2789 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2790 on_enterleave_call (aTHX_ sv_2mortal (cb));
1920} 2791}
1921 2792
1922/*****************************************************************************/ 2793/*****************************************************************************/
1923/* PerlIO::cede */ 2794/* PerlIO::cede */
1924 2795
… …
1926{ 2797{
1927 PerlIOBuf base; 2798 PerlIOBuf base;
1928 NV next, every; 2799 NV next, every;
1929} PerlIOCede; 2800} PerlIOCede;
1930 2801
1931static IV 2802static IV ecb_cold
1932PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2803PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1933{ 2804{
1934 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2805 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1935 2806
1936 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2807 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1937 self->next = nvtime () + self->every; 2808 self->next = nvtime () + self->every;
1938 2809
1939 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2810 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1940} 2811}
1941 2812
1942static SV * 2813static SV * ecb_cold
1943PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2814PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1944{ 2815{
1945 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2816 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1946 2817
1947 return newSVnv (self->every); 2818 return newSVnv (self->every);
… …
1993 PerlIOBuf_get_cnt, 2864 PerlIOBuf_get_cnt,
1994 PerlIOBuf_set_ptrcnt, 2865 PerlIOBuf_set_ptrcnt,
1995}; 2866};
1996 2867
1997/*****************************************************************************/ 2868/*****************************************************************************/
2869/* Coro::Semaphore & Coro::Signal */
2870
2871static SV *
2872coro_waitarray_new (pTHX_ int count)
2873{
2874 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2875 AV *av = newAV ();
2876 SV **ary;
2877
2878 /* unfortunately, building manually saves memory */
2879 Newx (ary, 2, SV *);
2880 AvALLOC (av) = ary;
2881#if PERL_VERSION_ATLEAST (5,10,0)
2882 AvARRAY (av) = ary;
2883#else
2884 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2885 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2886 SvPVX ((SV *)av) = (char *)ary;
2887#endif
2888 AvMAX (av) = 1;
2889 AvFILLp (av) = 0;
2890 ary [0] = newSViv (count);
2891
2892 return newRV_noinc ((SV *)av);
2893}
2894
1998/* Coro::Semaphore */ 2895/* semaphore */
1999 2896
2000static void 2897static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2898coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{ 2899{
2003 SV *count_sv = AvARRAY (av)[0]; 2900 SV *count_sv = AvARRAY (av)[0];
… …
2015 AvARRAY (av)[0] = AvARRAY (av)[1]; 2912 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv; 2913 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av); 2914 cb = av_shift (av);
2018 2915
2019 if (SvOBJECT (cb)) 2916 if (SvOBJECT (cb))
2917 {
2020 api_ready (aTHX_ cb); 2918 api_ready (aTHX_ cb);
2021 else 2919 --count;
2022 croak ("callbacks not yet supported"); 2920 }
2921 else if (SvTYPE (cb) == SVt_PVCV)
2922 {
2923 dSP;
2924 PUSHMARK (SP);
2925 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2926 PUTBACK;
2927 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2928 }
2023 2929
2024 SvREFCNT_dec (cb); 2930 SvREFCNT_dec (cb);
2025
2026 --count;
2027 } 2931 }
2028} 2932}
2029 2933
2030static void 2934static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2935coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2032{ 2936{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2937 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2938 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2035} 2939}
2036 2940
2037static int 2941static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2942slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2039{ 2943{
2040 AV *av = (AV *)frame->data; 2944 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0]; 2945 SV *count_sv = AvARRAY (av)[0];
2946 SV *coro_hv = SvRV (coro_current);
2042 2947
2948 /* if we are about to throw, don't actually acquire the lock, just throw */
2949 if (CORO_THROW)
2950 return 0;
2043 if (SvIVX (count_sv) > 0) 2951 else if (SvIVX (count_sv) > 0)
2044 { 2952 {
2045 SvSTATE_current->on_destroy = 0; 2953 frame->destroy = 0;
2954
2955 if (acquire)
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2956 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2957 else
2958 coro_semaphore_adjust (aTHX_ av, 0);
2959
2047 return 0; 2960 return 0;
2048 } 2961 }
2049 else 2962 else
2050 { 2963 {
2051 int i; 2964 int i;
2052 /* if we were woken up but can't down, we look through the whole */ 2965 /* if we were woken up but can't down, we look through the whole */
2053 /* waiters list and only add us if we aren't in there already */ 2966 /* waiters list and only add us if we aren't in there already */
2054 /* this avoids some degenerate memory usage cases */ 2967 /* this avoids some degenerate memory usage cases */
2055 2968 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current)) 2969 if (AvARRAY (av)[i] == coro_hv)
2058 return 1; 2970 return 1;
2059 2971
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2972 av_push (av, SvREFCNT_inc (coro_hv));
2061 return 1; 2973 return 1;
2062 } 2974 }
2063} 2975}
2064 2976
2065static void 2977static int
2978slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2979{
2980 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2981}
2982
2983static int
2984slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2985{
2986 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2987}
2988
2989static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2990slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{ 2991{
2068 AV *av = (AV *)SvRV (arg [0]); 2992 AV *av = (AV *)SvRV (arg [0]);
2069 2993
2070 if (SvIVX (AvARRAY (av)[0]) > 0) 2994 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 { 2995 {
2072 frame->data = (void *)av; 2996 frame->data = (void *)av;
2073 frame->prepare = prepare_nop; 2997 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 } 2998 }
2076 else 2999 else
2077 { 3000 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3001 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079 3002
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3003 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule; 3004 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */ 3005 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3006 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3007 frame->destroy = coro_semaphore_destroy;
2087 } 3008 }
3009}
2088 3010
3011static void
3012slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3013{
3014 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2089 frame->check = slf_check_semaphore_down; 3015 frame->check = slf_check_semaphore_down;
2090
2091} 3016}
2092 3017
2093/*****************************************************************************/ 3018static void
2094/* gensub: simple closure generation utility */ 3019slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{ 3020{
2104 CV *cv = (CV *)newSV (0); 3021 if (items >= 2)
3022 {
3023 /* callback form */
3024 AV *av = (AV *)SvRV (arg [0]);
3025 SV *cb_cv = s_get_cv_croak (arg [1]);
2105 3026
2106 sv_upgrade ((SV *)cv, SVt_PVCV); 3027 av_push (av, SvREFCNT_inc_NN (cb_cv));
2107 3028
2108 CvANON_on (cv); 3029 if (SvIVX (AvARRAY (av)[0]) > 0)
2109 CvISXSUB_on (cv); 3030 coro_semaphore_adjust (aTHX_ av, 0);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112 3031
2113 return newRV_noinc ((SV *)cv); 3032 frame->prepare = prepare_nop;
3033 frame->check = slf_check_nop;
3034 }
3035 else
3036 {
3037 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3038 frame->check = slf_check_semaphore_wait;
3039 }
3040}
3041
3042/* signal */
3043
3044static void
3045coro_signal_wake (pTHX_ AV *av, int count)
3046{
3047 SvIVX (AvARRAY (av)[0]) = 0;
3048
3049 /* now signal count waiters */
3050 while (count > 0 && AvFILLp (av) > 0)
3051 {
3052 SV *cb;
3053
3054 /* swap first two elements so we can shift a waiter */
3055 cb = AvARRAY (av)[0];
3056 AvARRAY (av)[0] = AvARRAY (av)[1];
3057 AvARRAY (av)[1] = cb;
3058
3059 cb = av_shift (av);
3060
3061 if (SvTYPE (cb) == SVt_PVCV)
3062 {
3063 dSP;
3064 PUSHMARK (SP);
3065 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3066 PUTBACK;
3067 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3068 }
3069 else
3070 {
3071 api_ready (aTHX_ cb);
3072 sv_setiv (cb, 0); /* signal waiter */
3073 }
3074
3075 SvREFCNT_dec (cb);
3076
3077 --count;
3078 }
3079}
3080
3081static int
3082slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3083{
3084 /* if we are about to throw, also stop waiting */
3085 return SvROK ((SV *)frame->data) && !CORO_THROW;
3086}
3087
3088static void
3089slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3090{
3091 AV *av = (AV *)SvRV (arg [0]);
3092
3093 if (items >= 2)
3094 {
3095 SV *cb_cv = s_get_cv_croak (arg [1]);
3096 av_push (av, SvREFCNT_inc_NN (cb_cv));
3097
3098 if (SvIVX (AvARRAY (av)[0]))
3099 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3100
3101 frame->prepare = prepare_nop;
3102 frame->check = slf_check_nop;
3103 }
3104 else if (SvIVX (AvARRAY (av)[0]))
3105 {
3106 SvIVX (AvARRAY (av)[0]) = 0;
3107 frame->prepare = prepare_nop;
3108 frame->check = slf_check_nop;
3109 }
3110 else
3111 {
3112 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3113
3114 av_push (av, waiter);
3115
3116 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3117 frame->prepare = prepare_schedule;
3118 frame->check = slf_check_signal_wait;
3119 }
2114} 3120}
2115 3121
2116/*****************************************************************************/ 3122/*****************************************************************************/
2117/* Coro::AIO */ 3123/* Coro::AIO */
2118 3124
… …
2129 3135
2130static void 3136static void
2131coro_aio_callback (pTHX_ CV *cv) 3137coro_aio_callback (pTHX_ CV *cv)
2132{ 3138{
2133 dXSARGS; 3139 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG; 3140 AV *state = (AV *)S_GENSUB_ARG;
2135 SV *coro = av_pop (state); 3141 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state)); 3142 SV *data_sv = newSV (sizeof (struct io_state));
2137 3143
2138 av_extend (state, items); 3144 av_extend (state, items - 1);
2139 3145
2140 sv_upgrade (data_sv, SVt_PV); 3146 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state)); 3147 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv); 3148 SvPOK_only (data_sv);
2143 3149
… …
2168static int 3174static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3175slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{ 3176{
2171 AV *state = (AV *)frame->data; 3177 AV *state = (AV *)frame->data;
2172 3178
3179 /* if we are about to throw, return early */
3180 /* this does not cancel the aio request, but at least */
3181 /* it quickly returns */
3182 if (CORO_THROW)
3183 return 0;
3184
2173 /* one element that is an RV? repeat! */ 3185 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3186 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1; 3187 return 1;
2176 3188
2177 /* restore status */ 3189 /* restore status */
… …
2218 dSP; 3230 dSP;
2219 3231
2220 static SV *prio_cv; 3232 static SV *prio_cv;
2221 static SV *prio_sv; 3233 static SV *prio_sv;
2222 3234
2223 if (expect_false (!prio_cv)) 3235 if (ecb_expect_false (!prio_cv))
2224 { 3236 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3237 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0); 3238 prio_sv = newSViv (0);
2227 } 3239 }
2228 3240
… …
2247 3259
2248 for (i = 0; i < items; ++i) 3260 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]); 3261 PUSHs (arg [i]);
2250 3262
2251 /* now push the callback closure */ 3263 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3264 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253 3265
2254 /* now call the AIO function - we assume our request is uncancelable */ 3266 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK; 3267 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD); 3268 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 } 3269 }
2258 3270
2259 /* now that the requets is going, we loop toll we have a result */ 3271 /* now that the request is going, we loop till we have a result */
2260 frame->data = (void *)state; 3272 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule; 3273 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req; 3274 frame->check = slf_check_aio_req;
2263} 3275}
2264 3276
2265static void 3277static void
2266coro_aio_req_xs (pTHX_ CV *cv) 3278coro_aio_req_xs (pTHX_ CV *cv)
2267{ 3279{
2268 dVAR;
2269 dXSARGS; 3280 dXSARGS;
2270 3281
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req); 3282 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272 3283
2273 XSRETURN_EMPTY; 3284 XSRETURN_EMPTY;
2274} 3285}
2275 3286
2276/*****************************************************************************/ 3287/*****************************************************************************/
3288
3289#if CORO_CLONE
3290# include "clone.c"
3291#endif
3292
3293/*****************************************************************************/
3294
3295static SV *
3296coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3297{
3298 SV *coro_sv;
3299 struct coro *coro;
3300 MAGIC *mg;
3301 HV *hv;
3302 SV *cb;
3303 int i;
3304
3305 if (argc > 0)
3306 {
3307 cb = s_get_cv_croak (argv [0]);
3308
3309 if (!is_coro)
3310 {
3311 if (CvISXSUB (cb))
3312 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3313
3314 if (!CvROOT (cb))
3315 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3316 }
3317 }
3318
3319 Newz (0, coro, 1, struct coro);
3320 coro->args = newAV ();
3321 coro->flags = CF_NEW;
3322
3323 if (coro_first) coro_first->prev = coro;
3324 coro->next = coro_first;
3325 coro_first = coro;
3326
3327 coro->hv = hv = newHV ();
3328 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3329 mg->mg_flags |= MGf_DUP;
3330 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3331
3332 if (argc > 0)
3333 {
3334 av_extend (coro->args, argc + is_coro - 1);
3335
3336 if (is_coro)
3337 {
3338 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3339 cb = (SV *)cv_coro_run;
3340 }
3341
3342 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3343
3344 for (i = 1; i < argc; i++)
3345 av_push (coro->args, newSVsv (argv [i]));
3346 }
3347
3348 return coro_sv;
3349}
3350
3351#ifndef __cplusplus
3352ecb_cold XS(boot_Coro__State);
3353#endif
3354
3355#if CORO_JIT
3356
3357static void ecb_noinline ecb_cold
3358pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3359{
3360 dSP;
3361 AV *av = newAV ();
3362
3363 av_store (av, 3, newSVuv (d));
3364 av_store (av, 2, newSVuv (c));
3365 av_store (av, 1, newSVuv (b));
3366 av_store (av, 0, newSVuv (a));
3367
3368 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3369
3370 PUTBACK;
3371}
3372
3373static void ecb_noinline ecb_cold
3374jit_init (pTHX)
3375{
3376 dSP;
3377 SV *load, *save;
3378 char *map_base;
3379 char *load_ptr, *save_ptr;
3380 STRLEN load_len, save_len, map_len;
3381 int count;
3382
3383 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3384
3385 PUSHMARK (SP);
3386#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3387# include "state.h"
3388#undef VARx
3389 count = call_pv ("Coro::State::_jit", G_ARRAY);
3390 SPAGAIN;
3391
3392 save = POPs; save_ptr = SvPVbyte (save, save_len);
3393 load = POPs; load_ptr = SvPVbyte (load, load_len);
3394
3395 map_len = load_len + save_len + 16;
3396
3397 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3398
3399 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3400
3401 load_perl_slots = (load_save_perl_slots_type)map_base;
3402 memcpy (map_base, load_ptr, load_len);
3403
3404 map_base += (load_len + 15) & ~15;
3405
3406 save_perl_slots = (load_save_perl_slots_type)map_base;
3407 memcpy (map_base, save_ptr, save_len);
3408
3409 /* we are good citizens and try to make the page read-only, so the evil evil */
3410 /* hackers might have it a bit more difficult */
3411 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3412
3413 PUTBACK;
3414 eval_pv ("undef &Coro::State::_jit", 1);
3415}
3416
3417#endif
2277 3418
2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3419MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2279 3420
2280PROTOTYPES: DISABLE 3421PROTOTYPES: DISABLE
2281 3422
… …
2286 coro_thx = PERL_GET_CONTEXT; 3427 coro_thx = PERL_GET_CONTEXT;
2287# endif 3428# endif
2288#endif 3429#endif
2289 BOOT_PAGESIZE; 3430 BOOT_PAGESIZE;
2290 3431
3432 /* perl defines these to check for existance first, but why it doesn't */
3433 /* just create them one at init time is not clear to me, except for */
3434 /* programs trying to delete them, but... */
3435 /* anyway, we declare this as invalid and make sure they are initialised here */
3436 DEFSV;
3437 ERRSV;
3438
3439 cctx_current = cctx_new_empty ();
3440
2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3441 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3442 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2293 3443
2294 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3444 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2295 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3445 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2314 3464
2315 { 3465 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3466 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317 3467
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3468 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf, 3469 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2320 newSVpv ("coro_slf", 0), 0);
2321 3470
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3471 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf, 3472 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2324 newSVpv ("coro schedule like function", 0), 0);
2325 } 3473 }
2326 3474
2327 coroapi.ver = CORO_API_VERSION; 3475 coroapi.ver = CORO_API_VERSION;
2328 coroapi.rev = CORO_API_REVISION; 3476 coroapi.rev = CORO_API_REVISION;
2329 3477
… …
2334 coroapi.prepare_nop = prepare_nop; 3482 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule; 3483 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede; 3484 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself; 3485 coroapi.prepare_cede_notself = prepare_cede_notself;
2338 3486
2339 { 3487 time_init (aTHX);
2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2341 3488
2342 if (!svp) croak ("Time::HiRes is required");
2343 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2344
2345 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2346 }
2347
2348 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3489 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3490#if CORO_JIT
3491 PUTBACK;
3492 jit_init (aTHX);
3493 SPAGAIN;
3494#endif
2349} 3495}
2350 3496
2351SV * 3497SV *
2352new (char *klass, ...) 3498new (SV *klass, ...)
3499 ALIAS:
3500 Coro::new = 1
2353 CODE: 3501 CODE:
2354{ 3502 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2355 struct coro *coro; 3503 OUTPUT:
2356 MAGIC *mg;
2357 HV *hv;
2358 int i;
2359
2360 Newz (0, coro, 1, struct coro);
2361 coro->args = newAV ();
2362 coro->flags = CF_NEW;
2363
2364 if (coro_first) coro_first->prev = coro;
2365 coro->next = coro_first;
2366 coro_first = coro;
2367
2368 coro->hv = hv = newHV ();
2369 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2370 mg->mg_flags |= MGf_DUP;
2371 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2372
2373 av_extend (coro->args, items - 1);
2374 for (i = 1; i < items; i++)
2375 av_push (coro->args, newSVsv (ST (i)));
2376}
2377 OUTPUT:
2378 RETVAL 3504 RETVAL
2379
2380void
2381_set_stacklevel (...)
2382 CODE:
2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2384 3505
2385void 3506void
2386transfer (...) 3507transfer (...)
2387 PROTOTYPE: $$ 3508 PROTOTYPE: $$
2388 CODE: 3509 CODE:
2389 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3510 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2390 3511
2391bool
2392_destroy (SV *coro_sv)
2393 CODE:
2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2395 OUTPUT:
2396 RETVAL
2397
2398void 3512void
2399_exit (int code) 3513_exit (int code)
2400 PROTOTYPE: $ 3514 PROTOTYPE: $
2401 CODE: 3515 CODE:
2402 _exit (code); 3516 _exit (code);
3517
3518SV *
3519clone (Coro::State coro)
3520 CODE:
3521{
3522#if CORO_CLONE
3523 struct coro *ncoro = coro_clone (aTHX_ coro);
3524 MAGIC *mg;
3525 /* TODO: too much duplication */
3526 ncoro->hv = newHV ();
3527 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3528 mg->mg_flags |= MGf_DUP;
3529 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3530#else
3531 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3532#endif
3533}
3534 OUTPUT:
3535 RETVAL
2403 3536
2404int 3537int
2405cctx_stacksize (int new_stacksize = 0) 3538cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$ 3539 PROTOTYPE: ;$
2407 CODE: 3540 CODE:
… …
2457 eval = 1 3590 eval = 1
2458 CODE: 3591 CODE:
2459{ 3592{
2460 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3593 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2461 { 3594 {
2462 struct coro temp; 3595 struct coro *current = SvSTATE_current;
3596 struct CoroSLF slf_save;
2463 3597
2464 if (!(coro->flags & CF_RUNNING)) 3598 if (current != coro)
2465 { 3599 {
2466 PUTBACK; 3600 PUTBACK;
2467 save_perl (aTHX_ &temp); 3601 save_perl (aTHX_ current);
2468 load_perl (aTHX_ coro); 3602 load_perl (aTHX_ coro);
3603 /* the coro is most likely in an active SLF call.
3604 * while not strictly required (the code we execute is
3605 * not allowed to call any SLF functions), it's cleaner
3606 * to reinitialise the slf_frame and restore it later.
3607 * This might one day allow us to actually do SLF calls
3608 * from code executed here.
3609 */
3610 slf_save = slf_frame;
3611 slf_frame.prepare = 0;
3612 SPAGAIN;
2469 } 3613 }
2470 3614
2471 {
2472 dSP;
2473 ENTER;
2474 SAVETMPS;
2475 PUTBACK;
2476 PUSHSTACK; 3615 PUSHSTACK;
3616
2477 PUSHMARK (SP); 3617 PUSHMARK (SP);
3618 PUTBACK;
2478 3619
2479 if (ix) 3620 if (ix)
2480 eval_sv (coderef, 0); 3621 eval_sv (coderef, 0);
2481 else 3622 else
2482 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3623 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2483 3624
2484 POPSTACK; 3625 POPSTACK;
2485 SPAGAIN; 3626 SPAGAIN;
2486 FREETMPS;
2487 LEAVE;
2488 PUTBACK;
2489 }
2490 3627
2491 if (!(coro->flags & CF_RUNNING)) 3628 if (current != coro)
2492 { 3629 {
3630 PUTBACK;
3631 slf_frame = slf_save;
2493 save_perl (aTHX_ coro); 3632 save_perl (aTHX_ coro);
2494 load_perl (aTHX_ &temp); 3633 load_perl (aTHX_ current);
2495 SPAGAIN; 3634 SPAGAIN;
2496 } 3635 }
2497 } 3636 }
2498} 3637}
2499 3638
… …
2502 PROTOTYPE: $ 3641 PROTOTYPE: $
2503 ALIAS: 3642 ALIAS:
2504 is_ready = CF_READY 3643 is_ready = CF_READY
2505 is_running = CF_RUNNING 3644 is_running = CF_RUNNING
2506 is_new = CF_NEW 3645 is_new = CF_NEW
2507 is_destroyed = CF_DESTROYED 3646 is_destroyed = CF_ZOMBIE
3647 is_zombie = CF_ZOMBIE
3648 is_suspended = CF_SUSPENDED
2508 CODE: 3649 CODE:
2509 RETVAL = boolSV (coro->flags & ix); 3650 RETVAL = boolSV (coro->flags & ix);
2510 OUTPUT: 3651 OUTPUT:
2511 RETVAL 3652 RETVAL
2512 3653
2513void 3654void
2514throw (Coro::State self, SV *throw = &PL_sv_undef) 3655throw (Coro::State self, SV *exception = &PL_sv_undef)
2515 PROTOTYPE: $;$ 3656 PROTOTYPE: $;$
2516 CODE: 3657 CODE:
2517{ 3658{
2518 struct coro *current = SvSTATE_current; 3659 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw; 3660 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2520 SvREFCNT_dec (*throwp); 3661 SvREFCNT_dec (*exceptionp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3662 SvGETMAGIC (exception);
3663 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2522} 3664}
2523 3665
2524void 3666void
2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3667api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$ 3668 PROTOTYPE: $;$
… …
2528 3670
2529SV * 3671SV *
2530has_cctx (Coro::State coro) 3672has_cctx (Coro::State coro)
2531 PROTOTYPE: $ 3673 PROTOTYPE: $
2532 CODE: 3674 CODE:
2533 RETVAL = boolSV (!!coro->cctx); 3675 /* maybe manage the running flag differently */
3676 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2534 OUTPUT: 3677 OUTPUT:
2535 RETVAL 3678 RETVAL
2536 3679
2537int 3680int
2538is_traced (Coro::State coro) 3681is_traced (Coro::State coro)
… …
2558 3701
2559void 3702void
2560force_cctx () 3703force_cctx ()
2561 PROTOTYPE: 3704 PROTOTYPE:
2562 CODE: 3705 CODE:
2563 SvSTATE_current->cctx->idle_sp = 0; 3706 cctx_current->idle_sp = 0;
2564 3707
2565void 3708void
2566swap_defsv (Coro::State self) 3709swap_defsv (Coro::State self)
2567 PROTOTYPE: $ 3710 PROTOTYPE: $
2568 ALIAS: 3711 ALIAS:
… …
2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3719 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2577 3720
2578 SV *tmp = *src; *src = *dst; *dst = tmp; 3721 SV *tmp = *src; *src = *dst; *dst = tmp;
2579 } 3722 }
2580 3723
3724void
3725cancel (Coro::State self)
3726 CODE:
3727 coro_state_destroy (aTHX_ self);
3728
3729SV *
3730enable_times (int enabled = enable_times)
3731 CODE:
3732{
3733 RETVAL = boolSV (enable_times);
3734
3735 if (enabled != enable_times)
3736 {
3737 enable_times = enabled;
3738
3739 coro_times_update ();
3740 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3741 }
3742}
3743 OUTPUT:
3744 RETVAL
3745
3746void
3747times (Coro::State self)
3748 PPCODE:
3749{
3750 struct coro *current = SvSTATE (coro_current);
3751
3752 if (ecb_expect_false (current == self))
3753 {
3754 coro_times_update ();
3755 coro_times_add (SvSTATE (coro_current));
3756 }
3757
3758 EXTEND (SP, 2);
3759 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3760 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3761
3762 if (ecb_expect_false (current == self))
3763 coro_times_sub (SvSTATE (coro_current));
3764}
3765
3766void
3767swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3768 CODE:
3769{
3770 struct coro *current = SvSTATE_current;
3771
3772 if (current == coro)
3773 SWAP_SVS (current);
3774
3775 if (!coro->swap_sv)
3776 coro->swap_sv = newAV ();
3777
3778 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3779 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3780
3781 if (current == coro)
3782 SWAP_SVS (current);
3783}
3784
2581 3785
2582MODULE = Coro::State PACKAGE = Coro 3786MODULE = Coro::State PACKAGE = Coro
2583 3787
2584BOOT: 3788BOOT:
2585{ 3789{
2586 int i;
2587
2588 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2589 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3790 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2590 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3791 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2591 3792 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2592 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3793 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2593 SvREADONLY_on (coro_current); 3794 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3795 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3796 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3797 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2594 3798
3799 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3800 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3801 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3802 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3803
2595 coro_stash = gv_stashpv ("Coro", TRUE); 3804 coro_stash = gv_stashpv ("Coro", TRUE);
2596 3805
2597 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3806 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2598 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3807 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2599 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3808 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2600 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3809 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2601 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3810 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2602 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3811 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2603
2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2605 coro_ready[i] = newAV ();
2606 3812
2607 { 3813 {
2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3814 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2609 3815
2610 coroapi.schedule = api_schedule; 3816 coroapi.schedule = api_schedule;
3817 coroapi.schedule_to = api_schedule_to;
2611 coroapi.cede = api_cede; 3818 coroapi.cede = api_cede;
2612 coroapi.cede_notself = api_cede_notself; 3819 coroapi.cede_notself = api_cede_notself;
2613 coroapi.ready = api_ready; 3820 coroapi.ready = api_ready;
2614 coroapi.is_ready = api_is_ready; 3821 coroapi.is_ready = api_is_ready;
2615 coroapi.nready = coro_nready; 3822 coroapi.nready = coro_nready;
2616 coroapi.current = coro_current; 3823 coroapi.current = coro_current;
2617 3824
2618 GCoroAPI = &coroapi; 3825 /*GCoroAPI = &coroapi;*/
2619 sv_setiv (sv, (IV)&coroapi); 3826 sv_setiv (sv, (IV)&coroapi);
2620 SvREADONLY_on (sv); 3827 SvREADONLY_on (sv);
2621 } 3828 }
2622} 3829}
3830
3831SV *
3832async (...)
3833 PROTOTYPE: &@
3834 CODE:
3835 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3836 api_ready (aTHX_ RETVAL);
3837 OUTPUT:
3838 RETVAL
3839
3840void
3841_destroy (Coro::State coro)
3842 CODE:
3843 /* used by the manager thread */
3844 coro_state_destroy (aTHX_ coro);
3845
3846void
3847on_destroy (Coro::State coro, SV *cb)
3848 CODE:
3849 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3850
3851void
3852join (...)
3853 CODE:
3854 CORO_EXECUTE_SLF_XS (slf_init_join);
3855
3856void
3857terminate (...)
3858 CODE:
3859 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3860
3861void
3862cancel (...)
3863 CODE:
3864 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3865
3866int
3867safe_cancel (Coro::State self, ...)
3868 C_ARGS: aTHX_ self, &ST (1), items - 1
2623 3869
2624void 3870void
2625schedule (...) 3871schedule (...)
2626 CODE: 3872 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3873 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3874
3875void
3876schedule_to (...)
3877 CODE:
3878 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3879
3880void
3881cede_to (...)
3882 CODE:
3883 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2628 3884
2629void 3885void
2630cede (...) 3886cede (...)
2631 CODE: 3887 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede); 3888 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2646void 3902void
2647_set_readyhook (SV *hook) 3903_set_readyhook (SV *hook)
2648 PROTOTYPE: $ 3904 PROTOTYPE: $
2649 CODE: 3905 CODE:
2650 SvREFCNT_dec (coro_readyhook); 3906 SvREFCNT_dec (coro_readyhook);
3907 SvGETMAGIC (hook);
3908 if (SvOK (hook))
3909 {
2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3910 coro_readyhook = newSVsv (hook);
3911 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3912 }
3913 else
3914 {
3915 coro_readyhook = 0;
3916 CORO_READYHOOK = 0;
3917 }
2652 3918
2653int 3919int
2654prio (Coro::State coro, int newprio = 0) 3920prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$ 3921 PROTOTYPE: $;$
2656 ALIAS: 3922 ALIAS:
… …
2662 if (items > 1) 3928 if (items > 1)
2663 { 3929 {
2664 if (ix) 3930 if (ix)
2665 newprio = coro->prio - newprio; 3931 newprio = coro->prio - newprio;
2666 3932
2667 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3933 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2668 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3934 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2669 3935
2670 coro->prio = newprio; 3936 coro->prio = newprio;
2671 } 3937 }
2672} 3938}
2673 OUTPUT: 3939 OUTPUT:
… …
2687 CODE: 3953 CODE:
2688 RETVAL = coro_nready; 3954 RETVAL = coro_nready;
2689 OUTPUT: 3955 OUTPUT:
2690 RETVAL 3956 RETVAL
2691 3957
2692# for async_pool speedup
2693void 3958void
2694_pool_1 (SV *cb) 3959suspend (Coro::State self)
3960 PROTOTYPE: $
2695 CODE: 3961 CODE:
2696{ 3962 self->flags |= CF_SUSPENDED;
2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2699 AV *defav = GvAV (PL_defgv);
2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2701 AV *invoke_av;
2702 int i, len;
2703 3963
2704 if (!invoke) 3964void
3965resume (Coro::State self)
3966 PROTOTYPE: $
3967 CODE:
3968 self->flags &= ~CF_SUSPENDED;
3969
3970void
3971_pool_handler (...)
3972 CODE:
3973 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3974
3975void
3976async_pool (SV *cv, ...)
3977 PROTOTYPE: &@
3978 PPCODE:
3979{
3980 HV *hv = (HV *)av_pop (av_async_pool);
3981 AV *av = newAV ();
3982 SV *cb = ST (0);
3983 int i;
3984
3985 av_extend (av, items - 2);
3986 for (i = 1; i < items; ++i)
3987 av_push (av, SvREFCNT_inc_NN (ST (i)));
3988
3989 if ((SV *)hv == &PL_sv_undef)
2705 { 3990 {
2706 SV *old = PL_diehook; 3991 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2707 PL_diehook = 0; 3992 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2708 SvREFCNT_dec (old); 3993 SvREFCNT_dec (sv);
2709 croak ("\3async_pool terminate\2\n");
2710 } 3994 }
2711 3995
2712 SvREFCNT_dec (coro->saved_deffh);
2713 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2714
2715 hv_store (hv, "desc", sizeof ("desc") - 1,
2716 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2717
2718 invoke_av = (AV *)SvRV (invoke);
2719 len = av_len (invoke_av);
2720
2721 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2722
2723 if (len > 0)
2724 { 3996 {
2725 av_fill (defav, len - 1); 3997 struct coro *coro = SvSTATE_hv (hv);
2726 for (i = 0; i < len; ++i) 3998
2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3999 assert (!coro->invoke_cb);
4000 assert (!coro->invoke_av);
4001 coro->invoke_cb = SvREFCNT_inc (cb);
4002 coro->invoke_av = av;
2728 } 4003 }
4004
4005 api_ready (aTHX_ (SV *)hv);
4006
4007 if (GIMME_V != G_VOID)
4008 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4009 else
4010 SvREFCNT_dec (hv);
2729} 4011}
4012
4013SV *
4014rouse_cb ()
4015 PROTOTYPE:
4016 CODE:
4017 RETVAL = coro_new_rouse_cb (aTHX);
4018 OUTPUT:
4019 RETVAL
2730 4020
2731void 4021void
2732_pool_2 (SV *cb) 4022rouse_wait (...)
4023 PROTOTYPE: ;$
4024 PPCODE:
4025 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4026
4027void
4028on_enter (SV *block)
4029 ALIAS:
4030 on_leave = 1
4031 PROTOTYPE: &
2733 CODE: 4032 CODE:
2734{ 4033{
2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv); 4034 struct coro *coro = SvSTATE_current;
4035 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2737 4036
2738 sv_setsv (cb, &PL_sv_undef); 4037 block = s_get_cv_croak (block);
2739 4038
2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4039 if (!*avp)
2741 coro->saved_deffh = 0; 4040 *avp = newAV ();
2742 4041
2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4042 av_push (*avp, SvREFCNT_inc (block));
2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2745 {
2746 SV *old = PL_diehook;
2747 PL_diehook = 0;
2748 SvREFCNT_dec (old);
2749 croak ("\3async_pool terminate\2\n");
2750 }
2751 4043
2752 av_clear (GvAV (PL_defgv)); 4044 if (!ix)
2753 hv_store (hv, "desc", sizeof ("desc") - 1, 4045 on_enterleave_call (aTHX_ block);
2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2755 4046
2756 coro->prio = 0; 4047 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2757 4048 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4049 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 api_trace (aTHX_ coro_current, 0);
2760
2761 av_push (av_async_pool, newSVsv (coro_current));
2762} 4050}
2763 4051
2764 4052
2765MODULE = Coro::State PACKAGE = PerlIO::cede 4053MODULE = Coro::State PACKAGE = PerlIO::cede
2766 4054
… …
2769 4057
2770 4058
2771MODULE = Coro::State PACKAGE = Coro::Semaphore 4059MODULE = Coro::State PACKAGE = Coro::Semaphore
2772 4060
2773SV * 4061SV *
2774new (SV *klass, SV *count_ = 0) 4062new (SV *klass, SV *count = 0)
2775 CODE: 4063 CODE:
2776{ 4064{
2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4065 int semcnt = 1;
2778 AV *av = newAV (); 4066
2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4067 if (count)
2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4068 {
4069 SvGETMAGIC (count);
4070
4071 if (SvOK (count))
4072 semcnt = SvIV (count);
4073 }
4074
4075 RETVAL = sv_bless (
4076 coro_waitarray_new (aTHX_ semcnt),
4077 GvSTASH (CvGV (cv))
4078 );
2781} 4079}
4080 OUTPUT:
4081 RETVAL
4082
4083# helper for Coro::Channel and others
4084SV *
4085_alloc (int count)
4086 CODE:
4087 RETVAL = coro_waitarray_new (aTHX_ count);
2782 OUTPUT: 4088 OUTPUT:
2783 RETVAL 4089 RETVAL
2784 4090
2785SV * 4091SV *
2786count (SV *self) 4092count (SV *self)
… …
2795 adjust = 1 4101 adjust = 1
2796 CODE: 4102 CODE:
2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4103 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2798 4104
2799void 4105void
2800down (SV *self) 4106down (...)
2801 CODE: 4107 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4108 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4109
4110void
4111wait (...)
4112 CODE:
4113 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2803 4114
2804void 4115void
2805try (SV *self) 4116try (SV *self)
2806 PPCODE: 4117 PPCODE:
2807{ 4118{
… …
2819 XSRETURN_NO; 4130 XSRETURN_NO;
2820} 4131}
2821 4132
2822void 4133void
2823waiters (SV *self) 4134waiters (SV *self)
2824 CODE: 4135 PPCODE:
2825{ 4136{
2826 AV *av = (AV *)SvRV (self); 4137 AV *av = (AV *)SvRV (self);
4138 int wcount = AvFILLp (av) + 1 - 1;
2827 4139
2828 if (GIMME_V == G_SCALAR) 4140 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4141 XPUSHs (sv_2mortal (newSViv (wcount)));
2830 else 4142 else
2831 { 4143 {
2832 int i; 4144 int i;
2833 EXTEND (SP, AvFILLp (av) + 1 - 1); 4145 EXTEND (SP, wcount);
2834 for (i = 1; i <= AvFILLp (av); ++i) 4146 for (i = 1; i <= wcount; ++i)
2835 PUSHs (newSVsv (AvARRAY (av)[i])); 4147 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2836 } 4148 }
2837} 4149}
4150
4151MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4152
4153void
4154_may_delete (SV *sem, int count, unsigned int extra_refs)
4155 PPCODE:
4156{
4157 AV *av = (AV *)SvRV (sem);
4158
4159 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4160 && AvFILLp (av) == 0 /* no waiters, just count */
4161 && SvIV (AvARRAY (av)[0]) == count)
4162 XSRETURN_YES;
4163
4164 XSRETURN_NO;
4165}
4166
4167MODULE = Coro::State PACKAGE = Coro::Signal
4168
4169SV *
4170new (SV *klass)
4171 CODE:
4172 RETVAL = sv_bless (
4173 coro_waitarray_new (aTHX_ 0),
4174 GvSTASH (CvGV (cv))
4175 );
4176 OUTPUT:
4177 RETVAL
4178
4179void
4180wait (...)
4181 CODE:
4182 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4183
4184void
4185broadcast (SV *self)
4186 CODE:
4187{
4188 AV *av = (AV *)SvRV (self);
4189 coro_signal_wake (aTHX_ av, AvFILLp (av));
4190}
4191
4192void
4193send (SV *self)
4194 CODE:
4195{
4196 AV *av = (AV *)SvRV (self);
4197
4198 if (AvFILLp (av))
4199 coro_signal_wake (aTHX_ av, 1);
4200 else
4201 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4202}
4203
4204IV
4205awaited (SV *self)
4206 CODE:
4207 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4208 OUTPUT:
4209 RETVAL
2838 4210
2839 4211
2840MODULE = Coro::State PACKAGE = Coro::AnyEvent 4212MODULE = Coro::State PACKAGE = Coro::AnyEvent
2841 4213
2842BOOT: 4214BOOT:
… …
2857 sv_setsv (sv_activity, &PL_sv_undef); 4229 sv_setsv (sv_activity, &PL_sv_undef);
2858 if (coro_nready >= incede) 4230 if (coro_nready >= incede)
2859 { 4231 {
2860 PUSHMARK (SP); 4232 PUSHMARK (SP);
2861 PUTBACK; 4233 PUTBACK;
2862 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4234 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2863 SPAGAIN;
2864 } 4235 }
2865 4236
2866 --incede; 4237 --incede;
2867} 4238}
2868 4239
… …
2871 4242
2872void 4243void
2873_register (char *target, char *proto, SV *req) 4244_register (char *target, char *proto, SV *req)
2874 CODE: 4245 CODE:
2875{ 4246{
2876 HV *st; 4247 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp; 4248 /* newXSproto doesn't return the CV on 5.8 */
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto); 4249 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4250 sv_setpv ((SV *)slf_cv, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4251 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881} 4252}
2882 4253
4254MODULE = Coro::State PACKAGE = Coro::Select
4255
4256void
4257patch_pp_sselect ()
4258 CODE:
4259 if (!coro_old_pp_sselect)
4260 {
4261 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4262 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4263 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4264 }
4265
4266void
4267unpatch_pp_sselect ()
4268 CODE:
4269 if (coro_old_pp_sselect)
4270 {
4271 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4272 coro_old_pp_sselect = 0;
4273 }
4274

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