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Comparing Coro/Coro/State.xs (file contents):
Revision 1.288 by root, Mon Nov 17 07:14:50 2008 UTC vs.
Revision 1.415 by root, Tue Aug 30 07:48:53 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#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 70#endif
108 71
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
111#endif 74#endif
… …
120#endif 83#endif
121 84
122/* 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
123 * portable way as possible. */ 86 * portable way as possible. */
124#if __GNUC__ >= 4 87#if __GNUC__ >= 4
88# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 89# define STACKLEVEL __builtin_frame_address (0)
126#else 90#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
92# define STACKLEVEL ((void *)&stacklevel)
128#endif 93#endif
129 94
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#define IN_DESTRUCT PL_dirty
131
132#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
136#else
137# define attribute(x)
138# define expect(expr,value) (expr)
139# define INLINE static
140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
144
145#define NOINLINE attribute ((noinline))
146 96
147#include "CoroAPI.h" 97#include "CoroAPI.h"
98#define GCoroAPI (&coroapi) /* very sneaky */
148 99
149#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
150# if CORO_PTHREAD 101# if CORO_PTHREAD
151static void *coro_thx; 102static void *coro_thx;
152# endif 103# endif
153#endif 104#endif
154 105
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
155static 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);
156 126
157static U32 cctx_gen; 127static U32 cctx_gen;
158static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 131static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 132static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 133static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 134
135static AV *av_destroy; /* destruction queue */
136static SV *sv_manager; /* the manager coro */
137static SV *sv_idle; /* $Coro::idle */
138
165static GV *irsgv; /* $/ */ 139static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 140static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 141static SV *rv_diehook;
168static SV *rv_warnhook; 142static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 143static HV *hv_sig; /* %SIG */
170 144
171/* async_pool helper stuff */ 145/* async_pool helper stuff */
172static SV *sv_pool_rss; 146static SV *sv_pool_rss;
173static SV *sv_pool_size; 147static SV *sv_pool_size;
148static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 149static AV *av_async_pool; /* idle pool */
150static SV *sv_Coro; /* class string */
151static CV *cv_pool_handler;
175 152
176/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
177static SV *sv_activity; 154static SV *sv_activity;
178 155
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
179static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
181 164
182enum { 165enum
166{
183 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
184 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
185 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
186 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
208 int valgrind_id; 192 int valgrind_id;
209#endif 193#endif
210 unsigned char flags; 194 unsigned char flags;
211} coro_cctx; 195} coro_cctx;
212 196
197static coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
201static MGVTBL coro_state_vtbl;
202
213enum { 203enum
204{
214 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
215 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
216 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
217 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) */
218}; 211};
219 212
220/* 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 */
221typedef struct 214typedef struct
222{ 215{
223 SV *defsv;
224 AV *defav;
225 SV *errsv;
226 SV *irsgv;
227#define VAR(name,type) type name; 216#define VARx(name,expr,type) type name;
228# include "state.h" 217# include "state.h"
229#undef VAR 218#undef VARx
230} perl_slots; 219} perl_slots;
231 220
221/* how many context stack entries do we need for perl_slots */
232#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))
233 223
234/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
235struct coro { 225struct coro
226{
236 /* the C coroutine allocated to this perl coroutine, if any */ 227 /* the C coroutine allocated to this perl coroutine, if any */
237 coro_cctx *cctx; 228 coro_cctx *cctx;
229
230 /* ready queue */
231 struct coro *next_ready;
238 232
239 /* state data */ 233 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */ 234 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 235 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 236 perl_slots *slot; /* basically the saved sp */
243 237
238 CV *startcv; /* the CV to execute */
244 AV *args; /* data associated with this coroutine (initial args) */ 239 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
247 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
249 242
250 /* statistics */ 243 /* statistics */
251 int usecount; /* number of transfers to this coro */ 244 int usecount; /* number of transfers to this coro */
252 245
253 /* coro process data */ 246 /* coro process data */
254 int prio; 247 int prio;
255 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 */
256 252
257 /* async_pool */ 253 /* async_pool */
258 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;
259 267
260 /* linked list */ 268 /* linked list */
261 struct coro *next, *prev; 269 struct coro *next, *prev;
262}; 270};
263 271
264typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
265typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
266 274
267/* the following variables are effectively part of the perl context */ 275/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */ 276/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */ 277/* the main reason we don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */ 278static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
272 279
273/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
274 281
275#define PRIO_MAX 3 282#define CORO_PRIO_MAX 3
276#define PRIO_HIGH 1 283#define CORO_PRIO_HIGH 1
277#define PRIO_NORMAL 0 284#define CORO_PRIO_NORMAL 0
278#define PRIO_LOW -1 285#define CORO_PRIO_LOW -1
279#define PRIO_IDLE -3 286#define CORO_PRIO_IDLE -3
280#define PRIO_MIN -4 287#define CORO_PRIO_MIN -4
281 288
282/* for Coro.pm */ 289/* for Coro.pm */
283static SV *coro_current; 290static SV *coro_current;
284static SV *coro_readyhook; 291static SV *coro_readyhook;
285static 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;
286static struct coro *coro_first; 294static struct coro *coro_first;
287#define coro_nready coroapi.nready 295#define coro_nready coroapi.nready
288 296
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
289/** lowlevel stuff **********************************************************/ 392/** lowlevel stuff **********************************************************/
290 393
291static SV * 394static SV * ecb_noinline
292coro_get_sv (pTHX_ const char *name, int create) 395coro_get_sv (pTHX_ const char *name, int create)
293{ 396{
294#if PERL_VERSION_ATLEAST (5,10,0) 397#if PERL_VERSION_ATLEAST (5,10,0)
295 /* 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 */
296 get_sv (name, create); 399 get_sv (name, create);
297#endif 400#endif
298 return get_sv (name, create); 401 return get_sv (name, create);
299} 402}
300 403
301static AV * 404static AV * ecb_noinline
302coro_get_av (pTHX_ const char *name, int create) 405coro_get_av (pTHX_ const char *name, int create)
303{ 406{
304#if PERL_VERSION_ATLEAST (5,10,0) 407#if PERL_VERSION_ATLEAST (5,10,0)
305 /* 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 */
306 get_av (name, create); 409 get_av (name, create);
307#endif 410#endif
308 return get_av (name, create); 411 return get_av (name, create);
309} 412}
310 413
311static HV * 414static HV * ecb_noinline
312coro_get_hv (pTHX_ const char *name, int create) 415coro_get_hv (pTHX_ const char *name, int create)
313{ 416{
314#if PERL_VERSION_ATLEAST (5,10,0) 417#if PERL_VERSION_ATLEAST (5,10,0)
315 /* 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 */
316 get_hv (name, create); 419 get_hv (name, create);
317#endif 420#endif
318 return get_hv (name, create); 421 return get_hv (name, create);
319} 422}
320 423
321static 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 *
322coro_clone_padlist (pTHX_ CV *cv) 530coro_derive_padlist (pTHX_ CV *cv)
323{ 531{
324 AV *padlist = CvPADLIST (cv); 532 AV *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 533 AV *newpadlist, *newpad;
326 534
327 newpadlist = newAV (); 535 newpadlist = newAV ();
… …
332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 540 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
333#endif 541#endif
334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 542 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
335 --AvFILLp (padlist); 543 --AvFILLp (padlist);
336 544
337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 545 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
338 av_store (newpadlist, 1, (SV *)newpad); 546 av_store (newpadlist, 1, (SV *)newpad);
339 547
340 return newpadlist; 548 return newpadlist;
341} 549}
342 550
343static void 551ecb_inline void
344free_padlist (pTHX_ AV *padlist) 552free_padlist (pTHX_ AV *padlist)
345{ 553{
346 /* may be during global destruction */ 554 /* may be during global destruction */
347 if (SvREFCNT (padlist)) 555 if (!IN_DESTRUCT)
348 { 556 {
349 I32 i = AvFILLp (padlist); 557 I32 i = AvFILLp (padlist);
350 while (i >= 0) 558
559 while (i > 0) /* special-case index 0 */
351 { 560 {
352 SV **svp = av_fetch (padlist, i--, FALSE); 561 /* we try to be extra-careful here */
353 if (svp) 562 AV *av = (AV *)AvARRAY (padlist)[i--];
354 { 563 I32 j = AvFILLp (av);
355 SV *sv; 564
356 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 565 while (j >= 0)
566 SvREFCNT_dec (AvARRAY (av)[j--]);
567
568 AvFILLp (av) = -1;
357 SvREFCNT_dec (sv); 569 SvREFCNT_dec (av);
358
359 SvREFCNT_dec (*svp);
360 }
361 } 570 }
362 571
572 SvREFCNT_dec (AvARRAY (padlist)[0]);
573
574 AvFILLp (padlist) = -1;
363 SvREFCNT_dec ((SV*)padlist); 575 SvREFCNT_dec ((SV*)padlist);
364 } 576 }
365} 577}
366 578
367static int 579static int
368coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 580coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
369{ 581{
370 AV *padlist; 582 AV *padlist;
371 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;
372 588
373 /* casting is fun. */ 589 /* casting is fun. */
374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 590 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
375 free_padlist (aTHX_ padlist); 591 free_padlist (aTHX_ padlist);
376 592
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 593 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 594
379 return 0; 595 return 0;
380} 596}
381
382#define CORO_MAGIC_type_cv 26
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 597
385static MGVTBL coro_cv_vtbl = { 598static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 599 0, 0, 0, 0,
387 coro_cv_free 600 coro_cv_free
388}; 601};
389 602
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
395#define CORO_MAGIC(sv, type) \
396 (expect_true (SvMAGIC (sv)) \
397 ? CORO_MAGIC_NN (sv, type) \
398 : 0)
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
432
433/* the next two functions merely cache the padlists */ 603/* the next two functions merely cache the padlists */
434static void 604ecb_inline void
435get_padlist (pTHX_ CV *cv) 605get_padlist (pTHX_ CV *cv)
436{ 606{
437 MAGIC *mg = CORO_MAGIC_cv (cv); 607 MAGIC *mg = CORO_MAGIC_cv (cv);
438 AV *av; 608 AV *av;
439 609
440 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 610 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
441 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 611 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
442 else 612 else
443 { 613 {
444#if CORO_PREFER_PERL_FUNCTIONS 614#if CORO_PREFER_PERL_FUNCTIONS
445 /* this is probably cleaner? but also slower! */ 615 /* this is probably cleaner? but also slower! */
446 /* in practise, it seems to be less stable */ 616 /* in practise, it seems to be less stable */
447 CV *cp = Perl_cv_clone (cv); 617 CV *cp = Perl_cv_clone (aTHX_ cv);
448 CvPADLIST (cv) = CvPADLIST (cp); 618 CvPADLIST (cv) = CvPADLIST (cp);
449 CvPADLIST (cp) = 0; 619 CvPADLIST (cp) = 0;
450 SvREFCNT_dec (cp); 620 SvREFCNT_dec (cp);
451#else 621#else
452 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 622 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
453#endif 623#endif
454 } 624 }
455} 625}
456 626
457static void 627ecb_inline void
458put_padlist (pTHX_ CV *cv) 628put_padlist (pTHX_ CV *cv)
459{ 629{
460 MAGIC *mg = CORO_MAGIC_cv (cv); 630 MAGIC *mg = CORO_MAGIC_cv (cv);
461 AV *av; 631 AV *av;
462 632
463 if (expect_false (!mg)) 633 if (ecb_expect_false (!mg))
464 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);
465 635
466 av = (AV *)mg->mg_obj; 636 av = (AV *)mg->mg_obj;
467 637
468 if (expect_false (AvFILLp (av) >= AvMAX (av))) 638 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
469 av_extend (av, AvMAX (av) + 1); 639 av_extend (av, AvFILLp (av) + 1);
470 640
471 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 641 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
472} 642}
473 643
474/** 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);
475 699
476static void 700static void
477load_perl (pTHX_ Coro__State c) 701load_perl (pTHX_ Coro__State c)
478{ 702{
479 perl_slots *slot = c->slot; 703 perl_slots *slot = c->slot;
480 c->slot = 0; 704 c->slot = 0;
481 705
482 PL_mainstack = c->mainstack; 706 PL_mainstack = c->mainstack;
483 707
484 GvSV (PL_defgv) = slot->defsv; 708#if CORO_JIT
485 GvAV (PL_defgv) = slot->defav; 709 load_perl_slots (slot);
486 GvSV (PL_errgv) = slot->errsv; 710#else
487 GvSV (irsgv) = slot->irsgv;
488
489 #define VAR(name,type) PL_ ## name = slot->name; 711 #define VARx(name,expr,type) expr = slot->name;
490 # include "state.h" 712 # include "state.h"
491 #undef VAR 713 #undef VARx
714#endif
492 715
493 { 716 {
494 dSP; 717 dSP;
495 718
496 CV *cv; 719 CV *cv;
497 720
498 /* now do the ugly restore mess */ 721 /* now do the ugly restore mess */
499 while (expect_true (cv = (CV *)POPs)) 722 while (ecb_expect_true (cv = (CV *)POPs))
500 { 723 {
501 put_padlist (aTHX_ cv); /* mark this padlist as available */ 724 put_padlist (aTHX_ cv); /* mark this padlist as available */
502 CvDEPTH (cv) = PTR2IV (POPs); 725 CvDEPTH (cv) = PTR2IV (POPs);
503 CvPADLIST (cv) = (AV *)POPs; 726 CvPADLIST (cv) = (AV *)POPs;
504 } 727 }
505 728
506 PUTBACK; 729 PUTBACK;
507 } 730 }
508 731
509 slf_frame = c->slf_frame; 732 slf_frame = c->slf_frame;
510 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);
511} 752}
512 753
513static void 754static void
514save_perl (pTHX_ Coro__State c) 755save_perl (pTHX_ Coro__State c)
515{ 756{
516 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;
517 c->slf_frame = slf_frame; 776 c->slf_frame = slf_frame;
518 777
519 { 778 {
520 dSP; 779 dSP;
521 I32 cxix = cxstack_ix; 780 I32 cxix = cxstack_ix;
… …
529 788
530 XPUSHs (Nullsv); 789 XPUSHs (Nullsv);
531 /* this loop was inspired by pp_caller */ 790 /* this loop was inspired by pp_caller */
532 for (;;) 791 for (;;)
533 { 792 {
534 while (expect_true (cxix >= 0)) 793 while (ecb_expect_true (cxix >= 0))
535 { 794 {
536 PERL_CONTEXT *cx = &ccstk[cxix--]; 795 PERL_CONTEXT *cx = &ccstk[cxix--];
537 796
538 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))
539 { 798 {
540 CV *cv = cx->blk_sub.cv; 799 CV *cv = cx->blk_sub.cv;
541 800
542 if (expect_true (CvDEPTH (cv))) 801 if (ecb_expect_true (CvDEPTH (cv)))
543 { 802 {
544 EXTEND (SP, 3); 803 EXTEND (SP, 3);
545 PUSHs ((SV *)CvPADLIST (cv)); 804 PUSHs ((SV *)CvPADLIST (cv));
546 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 805 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
547 PUSHs ((SV *)cv); 806 PUSHs ((SV *)cv);
… …
550 get_padlist (aTHX_ cv); 809 get_padlist (aTHX_ cv);
551 } 810 }
552 } 811 }
553 } 812 }
554 813
555 if (expect_true (top_si->si_type == PERLSI_MAIN)) 814 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
556 break; 815 break;
557 816
558 top_si = top_si->si_prev; 817 top_si = top_si->si_prev;
559 ccstk = top_si->si_cxstack; 818 ccstk = top_si->si_cxstack;
560 cxix = top_si->si_cxix; 819 cxix = top_si->si_cxix;
… …
562 821
563 PUTBACK; 822 PUTBACK;
564 } 823 }
565 824
566 /* allocate some space on the context stack for our purposes */ 825 /* allocate some space on the context stack for our purposes */
567 /* we manually unroll here, as usually 2 slots is enough */ 826 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
568 if (SLOT_COUNT >= 1) CXINC;
569 if (SLOT_COUNT >= 2) CXINC;
570 if (SLOT_COUNT >= 3) CXINC;
571 { 827 {
572 int i; 828 unsigned int i;
829
573 for (i = 3; i < SLOT_COUNT; ++i) 830 for (i = 0; i < SLOT_COUNT; ++i)
574 CXINC; 831 CXINC;
575 } 832
576 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 833 cxstack_ix -= SLOT_COUNT; /* undo allocation */
834 }
577 835
578 c->mainstack = PL_mainstack; 836 c->mainstack = PL_mainstack;
579 837
580 { 838 {
581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 839 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
582 840
583 slot->defav = GvAV (PL_defgv); 841#if CORO_JIT
584 slot->defsv = DEFSV; 842 save_perl_slots (slot);
585 slot->errsv = ERRSV; 843#else
586 slot->irsgv = GvSV (irsgv);
587
588 #define VAR(name,type) slot->name = PL_ ## name; 844 #define VARx(name,expr,type) slot->name = expr;
589 # include "state.h" 845 # include "state.h"
590 #undef VAR 846 #undef VARx
847#endif
591 } 848 }
592} 849}
593 850
594/* 851/*
595 * allocate various perl stacks. This is almost an exact copy 852 * allocate various perl stacks. This is almost an exact copy
596 * of perl.c:init_stacks, except that it uses less memory 853 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 854 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 855 * not usually need a lot of stackspace.
599 */ 856 */
600#if CORO_PREFER_PERL_FUNCTIONS 857#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 858# define coro_init_stacks(thx) init_stacks ()
602#else 859#else
603static void 860static void
604coro_init_stacks (pTHX) 861coro_init_stacks (pTHX)
605{ 862{
606 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() */
607 PL_curstackinfo->si_type = PERLSI_MAIN; 864 PL_curstackinfo->si_type = PERLSI_MAIN;
608 PL_curstack = PL_curstackinfo->si_stack; 865 PL_curstack = PL_curstackinfo->si_stack;
609 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 866 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
610 867
611 PL_stack_base = AvARRAY(PL_curstack); 868 PL_stack_base = AvARRAY(PL_curstack);
… …
626#endif 883#endif
627 884
628 New(54,PL_scopestack,8,I32); 885 New(54,PL_scopestack,8,I32);
629 PL_scopestack_ix = 0; 886 PL_scopestack_ix = 0;
630 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
631 891
632 New(54,PL_savestack,24,ANY); 892 New(54,PL_savestack,24,ANY);
633 PL_savestack_ix = 0; 893 PL_savestack_ix = 0;
634 PL_savestack_max = 24; 894 PL_savestack_max = 24;
635 895
… …
663 } 923 }
664 924
665 Safefree (PL_tmps_stack); 925 Safefree (PL_tmps_stack);
666 Safefree (PL_markstack); 926 Safefree (PL_markstack);
667 Safefree (PL_scopestack); 927 Safefree (PL_scopestack);
928#if HAS_SCOPESTACK_NAME
929 Safefree (PL_scopestack_name);
930#endif
668 Safefree (PL_savestack); 931 Safefree (PL_savestack);
669#if !PERL_VERSION_ATLEAST (5,10,0) 932#if !PERL_VERSION_ATLEAST (5,10,0)
670 Safefree (PL_retstack); 933 Safefree (PL_retstack);
671#endif 934#endif
672} 935}
673 936
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
674static size_t 946static size_t
675coro_rss (pTHX_ struct coro *coro) 947coro_rss (pTHX_ struct coro *coro)
676{ 948{
677 size_t rss = sizeof (*coro); 949 size_t rss = sizeof (*coro);
678 950
679 if (coro->mainstack) 951 if (coro->mainstack)
680 { 952 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING) 953 if (coro->flags & CF_RUNNING)
685 { 954 {
686 slot = &tmp_slot; 955 #define SYM(sym) PL_ ## sym
687 956 CORO_RSS;
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR 957 #undef SYM
691 } 958 }
692 else 959 else
693 slot = coro->slot;
694
695 if (slot)
696 { 960 {
697 rss += sizeof (slot->curstackinfo); 961 #define SYM(sym) coro->slot->sym
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 962 CORO_RSS;
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 963 #undef SYM
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 } 964 }
709 } 965 }
710 966
711 return rss; 967 return rss;
712} 968}
… …
725#endif 981#endif
726 982
727/* 983/*
728 * This overrides the default magic get method of %SIG elements. 984 * This overrides the default magic get method of %SIG elements.
729 * 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
730 * 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),
731 * readback here. 987 * we just provide our own readback here.
732 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
733 * not expecting this to actually change the hook. This is a potential problem
734 * when a schedule happens then, but we ignore this.
735 */ 988 */
736static int 989static int ecb_cold
737coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 990coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
738{ 991{
739 const char *s = MgPV_nolen_const (mg); 992 const char *s = MgPV_nolen_const (mg);
740 993
741 if (*s == '_') 994 if (*s == '_')
… …
745 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 998 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
746 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 999 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
747 1000
748 if (svp) 1001 if (svp)
749 { 1002 {
750 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1003 SV *ssv;
1004
1005 if (!*svp)
1006 ssv = &PL_sv_undef;
1007 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1008 ssv = sv_2mortal (newRV_inc (*svp));
1009 else
1010 ssv = *svp;
1011
1012 sv_setsv (sv, ssv);
751 return 0; 1013 return 0;
752 } 1014 }
753 } 1015 }
754 1016
755 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1017 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
756} 1018}
757 1019
758static int 1020static int ecb_cold
759coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1021coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
760{ 1022{
761 const char *s = MgPV_nolen_const (mg); 1023 const char *s = MgPV_nolen_const (mg);
762 1024
763 if (*s == '_') 1025 if (*s == '_')
… …
777 } 1039 }
778 1040
779 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1041 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
780} 1042}
781 1043
782static int 1044static int ecb_cold
783coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1045coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
784{ 1046{
785 const char *s = MgPV_nolen_const (mg); 1047 const char *s = MgPV_nolen_const (mg);
786 1048
787 if (*s == '_') 1049 if (*s == '_')
… …
792 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1054 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
793 1055
794 if (svp) 1056 if (svp)
795 { 1057 {
796 SV *old = *svp; 1058 SV *old = *svp;
797 *svp = newSVsv (sv); 1059 *svp = SvOK (sv) ? newSVsv (sv) : 0;
798 SvREFCNT_dec (old); 1060 SvREFCNT_dec (old);
799 return 0; 1061 return 0;
800 } 1062 }
801 } 1063 }
802 1064
… …
814slf_check_nop (pTHX_ struct CoroSLF *frame) 1076slf_check_nop (pTHX_ struct CoroSLF *frame)
815{ 1077{
816 return 0; 1078 return 0;
817} 1079}
818 1080
819static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1081static int
1082slf_check_repeat (pTHX_ struct CoroSLF *frame)
1083{
1084 return 1;
1085}
1086
1087static UNOP init_perl_op;
1088
1089ecb_noinline static void /* noinline to keep it out of the transfer fast path */
820coro_setup (pTHX_ struct coro *coro) 1090init_perl (pTHX_ struct coro *coro)
821{ 1091{
822 /* 1092 /*
823 * emulate part of the perl startup here. 1093 * emulate part of the perl startup here.
824 */ 1094 */
825 coro_init_stacks (aTHX); 1095 coro_init_stacks (aTHX);
826 1096
827 PL_runops = RUNOPS_DEFAULT; 1097 PL_runops = RUNOPS_DEFAULT;
828 PL_curcop = &PL_compiling; 1098 PL_curcop = &PL_compiling;
829 PL_in_eval = EVAL_NULL; 1099 PL_in_eval = EVAL_NULL;
830 PL_comppad = 0; 1100 PL_comppad = 0;
1101 PL_comppad_name = 0;
1102 PL_comppad_name_fill = 0;
1103 PL_comppad_name_floor = 0;
831 PL_curpm = 0; 1104 PL_curpm = 0;
832 PL_curpad = 0; 1105 PL_curpad = 0;
833 PL_localizing = 0; 1106 PL_localizing = 0;
834 PL_dirty = 0;
835 PL_restartop = 0; 1107 PL_restartop = 0;
836#if PERL_VERSION_ATLEAST (5,10,0) 1108#if PERL_VERSION_ATLEAST (5,10,0)
837 PL_parser = 0; 1109 PL_parser = 0;
838#endif 1110#endif
1111 PL_hints = 0;
839 1112
840 /* recreate the die/warn hooks */ 1113 /* recreate the die/warn hooks */
841 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1114 PL_diehook = SvREFCNT_inc (rv_diehook);
842 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1115 PL_warnhook = SvREFCNT_inc (rv_warnhook);
843 1116
844 GvSV (PL_defgv) = newSV (0); 1117 GvSV (PL_defgv) = newSV (0);
845 GvAV (PL_defgv) = coro->args; coro->args = 0; 1118 GvAV (PL_defgv) = coro->args; coro->args = 0;
846 GvSV (PL_errgv) = newSV (0); 1119 GvSV (PL_errgv) = newSV (0);
847 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1120 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1121 GvHV (PL_hintgv) = 0;
848 PL_rs = newSVsv (GvSV (irsgv)); 1122 PL_rs = newSVsv (GvSV (irsgv));
849 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1123 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
850 1124
851 { 1125 {
852 dSP; 1126 dSP;
853 UNOP myop; 1127 UNOP myop;
854 1128
855 Zero (&myop, 1, UNOP); 1129 Zero (&myop, 1, UNOP);
856 myop.op_next = Nullop; 1130 myop.op_next = Nullop;
1131 myop.op_type = OP_ENTERSUB;
857 myop.op_flags = OPf_WANT_VOID; 1132 myop.op_flags = OPf_WANT_VOID;
858 1133
859 PUSHMARK (SP); 1134 PUSHMARK (SP);
860 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1135 PUSHs ((SV *)coro->startcv);
861 PUTBACK; 1136 PUTBACK;
862 PL_op = (OP *)&myop; 1137 PL_op = (OP *)&myop;
863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1138 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
864 SPAGAIN;
865 } 1139 }
866 1140
867 /* this newly created coroutine might be run on an existing cctx which most 1141 /* this newly created coroutine might be run on an existing cctx which most
868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1142 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
869 */ 1143 */
870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1144 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1145 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1146 slf_frame.destroy = 0;
872 1147
873 coro_throw = coro->throw; 1148 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
874} 1149 init_perl_op.op_next = PL_op;
1150 init_perl_op.op_type = OP_ENTERSUB;
1151 init_perl_op.op_ppaddr = pp_slf;
1152 /* no flags etc. required, as an init function won't be called */
875 1153
1154 PL_op = (OP *)&init_perl_op;
1155
1156 /* copy throw, in case it was set before init_perl */
1157 CORO_THROW = coro->except;
1158
1159 SWAP_SVS (coro);
1160
1161 if (ecb_expect_false (enable_times))
1162 {
1163 coro_times_update ();
1164 coro_times_sub (coro);
1165 }
1166}
1167
876static void 1168static void
877coro_destruct (pTHX_ struct coro *coro) 1169coro_unwind_stacks (pTHX)
878{ 1170{
879 if (!IN_DESTRUCT) 1171 if (!IN_DESTRUCT)
880 { 1172 {
881 /* restore all saved variables and stuff */ 1173 /* restore all saved variables and stuff */
882 LEAVE_SCOPE (0); 1174 LEAVE_SCOPE (0);
… …
890 POPSTACK_TO (PL_mainstack); 1182 POPSTACK_TO (PL_mainstack);
891 1183
892 /* unwind main stack */ 1184 /* unwind main stack */
893 dounwind (-1); 1185 dounwind (-1);
894 } 1186 }
1187}
895 1188
896 SvREFCNT_dec (GvSV (PL_defgv)); 1189static void
897 SvREFCNT_dec (GvAV (PL_defgv)); 1190destroy_perl (pTHX_ struct coro *coro)
898 SvREFCNT_dec (GvSV (PL_errgv)); 1191{
899 SvREFCNT_dec (PL_defoutgv); 1192 SV *svf [9];
900 SvREFCNT_dec (PL_rs);
901 SvREFCNT_dec (GvSV (irsgv));
902 1193
903 SvREFCNT_dec (PL_diehook);
904 SvREFCNT_dec (PL_warnhook);
905 1194 {
1195 SV *old_current = SvRV (coro_current);
1196 struct coro *current = SvSTATE (old_current);
1197
1198 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1199
1200 save_perl (aTHX_ current);
1201
1202 /* this will cause transfer_check to croak on block*/
1203 SvRV_set (coro_current, (SV *)coro->hv);
1204
1205 load_perl (aTHX_ coro);
1206
1207 coro_unwind_stacks (aTHX);
1208
1209 /* restore swapped sv's */
1210 SWAP_SVS (coro);
1211
1212 coro_destruct_stacks (aTHX);
1213
1214 /* now save some sv's to be free'd later */
1215 svf [0] = GvSV (PL_defgv);
1216 svf [1] = (SV *)GvAV (PL_defgv);
1217 svf [2] = GvSV (PL_errgv);
1218 svf [3] = (SV *)PL_defoutgv;
1219 svf [4] = PL_rs;
1220 svf [5] = GvSV (irsgv);
1221 svf [6] = (SV *)GvHV (PL_hintgv);
1222 svf [7] = PL_diehook;
1223 svf [8] = PL_warnhook;
1224 assert (9 == sizeof (svf) / sizeof (*svf));
1225
1226 SvRV_set (coro_current, old_current);
1227
1228 load_perl (aTHX_ current);
1229 }
1230
1231 {
1232 unsigned int i;
1233
1234 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1235 SvREFCNT_dec (svf [i]);
1236
906 SvREFCNT_dec (coro->saved_deffh); 1237 SvREFCNT_dec (coro->saved_deffh);
907 SvREFCNT_dec (coro_throw); 1238 SvREFCNT_dec (coro->rouse_cb);
908 1239 SvREFCNT_dec (coro->invoke_cb);
909 coro_destruct_stacks (aTHX); 1240 SvREFCNT_dec (coro->invoke_av);
1241 }
910} 1242}
911 1243
912INLINE void 1244ecb_inline void
913free_coro_mortal (pTHX) 1245free_coro_mortal (pTHX)
914{ 1246{
915 if (expect_true (coro_mortal)) 1247 if (ecb_expect_true (coro_mortal))
916 { 1248 {
917 SvREFCNT_dec (coro_mortal); 1249 SvREFCNT_dec ((SV *)coro_mortal);
918 coro_mortal = 0; 1250 coro_mortal = 0;
919 } 1251 }
920} 1252}
921 1253
922static int 1254static int
923runops_trace (pTHX) 1255runops_trace (pTHX)
924{ 1256{
925 COP *oldcop = 0; 1257 COP *oldcop = 0;
926 int oldcxix = -2; 1258 int oldcxix = -2;
927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
928 coro_cctx *cctx = coro->cctx;
929 1259
930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1260 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
931 { 1261 {
932 PERL_ASYNC_CHECK (); 1262 PERL_ASYNC_CHECK ();
933 1263
934 if (cctx->flags & CC_TRACE_ALL) 1264 if (cctx_current->flags & CC_TRACE_ALL)
935 { 1265 {
936 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1266 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
937 { 1267 {
938 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1268 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
939 SV **bot, **top; 1269 SV **bot, **top;
940 AV *av = newAV (); /* return values */ 1270 AV *av = newAV (); /* return values */
941 SV **cb; 1271 SV **cb;
… …
978 1308
979 if (PL_curcop != &PL_compiling) 1309 if (PL_curcop != &PL_compiling)
980 { 1310 {
981 SV **cb; 1311 SV **cb;
982 1312
983 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1313 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
984 { 1314 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1315 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 1316
987 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1317 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
988 { 1318 {
989 runops_proc_t old_runops = PL_runops;
990 dSP; 1319 dSP;
991 GV *gv = CvGV (cx->blk_sub.cv); 1320 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0)); 1321 SV *fullname = sv_2mortal (newSV (0));
993 1322
994 if (isGV (gv)) 1323 if (isGV (gv))
… …
999 SAVETMPS; 1328 SAVETMPS;
1000 EXTEND (SP, 3); 1329 EXTEND (SP, 3);
1001 PUSHMARK (SP); 1330 PUSHMARK (SP);
1002 PUSHs (&PL_sv_yes); 1331 PUSHs (&PL_sv_yes);
1003 PUSHs (fullname); 1332 PUSHs (fullname);
1004 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1333 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1005 PUTBACK; 1334 PUTBACK;
1006 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1335 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1007 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1336 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1008 SPAGAIN; 1337 SPAGAIN;
1009 FREETMPS; 1338 FREETMPS;
… …
1012 } 1341 }
1013 1342
1014 oldcxix = cxstack_ix; 1343 oldcxix = cxstack_ix;
1015 } 1344 }
1016 1345
1017 if (cctx->flags & CC_TRACE_LINE) 1346 if (cctx_current->flags & CC_TRACE_LINE)
1018 { 1347 {
1019 dSP; 1348 dSP;
1020 1349
1021 PL_runops = RUNOPS_DEFAULT; 1350 PL_runops = RUNOPS_DEFAULT;
1022 ENTER; 1351 ENTER;
… …
1041 1370
1042 TAINT_NOT; 1371 TAINT_NOT;
1043 return 0; 1372 return 0;
1044} 1373}
1045 1374
1375static struct CoroSLF cctx_ssl_frame;
1376
1046static void 1377static void
1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1378slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1048{ 1379{
1049 ta->prev = (struct coro *)cctx;
1050 ta->next = 0; 1380 ta->prev = 0;
1051} 1381}
1052 1382
1053/* inject a fake call to Coro::State::_cctx_init into the execution */ 1383static int
1054/* _cctx_init should be careful, as it could be called at almost any time */ 1384slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1055/* during execution of a perl program */
1056/* also initialises PL_top_env */
1057static void NOINLINE
1058cctx_prepare (pTHX_ coro_cctx *cctx)
1059{ 1385{
1060 dSP; 1386 *frame = cctx_ssl_frame;
1061 UNOP myop;
1062 1387
1388 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1389}
1390
1391/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1392static void ecb_noinline
1393cctx_prepare (pTHX)
1394{
1063 PL_top_env = &PL_start_env; 1395 PL_top_env = &PL_start_env;
1064 1396
1065 if (cctx->flags & CC_TRACE) 1397 if (cctx_current->flags & CC_TRACE)
1066 PL_runops = runops_trace; 1398 PL_runops = runops_trace;
1067 1399
1068 Zero (&myop, 1, UNOP); 1400 /* we already must be executing an SLF op, there is no other valid way
1069 myop.op_next = PL_op; 1401 * that can lead to creation of a new cctx */
1070 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1402 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1403 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1071 1404
1072 PUSHMARK (SP); 1405 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1073 EXTEND (SP, 2); 1406 cctx_ssl_frame = slf_frame;
1074 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1407
1075 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1408 slf_frame.prepare = slf_prepare_set_stacklevel;
1076 PUTBACK; 1409 slf_frame.check = slf_check_set_stacklevel;
1077 PL_op = (OP *)&myop;
1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1079 SPAGAIN;
1080} 1410}
1081 1411
1082/* the tail of transfer: execute stuff we can only do after a transfer */ 1412/* the tail of transfer: execute stuff we can only do after a transfer */
1083INLINE void 1413ecb_inline void
1084transfer_tail (pTHX) 1414transfer_tail (pTHX)
1085{ 1415{
1086 free_coro_mortal (aTHX); 1416 free_coro_mortal (aTHX);
1087} 1417}
1088 1418
… …
1103 /* normally we would need to skip the entersub here */ 1433 /* normally we would need to skip the entersub here */
1104 /* not doing so will re-execute it, which is exactly what we want */ 1434 /* not doing so will re-execute it, which is exactly what we want */
1105 /* PL_nop = PL_nop->op_next */ 1435 /* PL_nop = PL_nop->op_next */
1106 1436
1107 /* inject a fake subroutine call to cctx_init */ 1437 /* inject a fake subroutine call to cctx_init */
1108 cctx_prepare (aTHX_ (coro_cctx *)arg); 1438 cctx_prepare (aTHX);
1109 1439
1110 /* cctx_run is the alternative tail of transfer() */ 1440 /* cctx_run is the alternative tail of transfer() */
1111 transfer_tail (aTHX); 1441 transfer_tail (aTHX);
1112 1442
1113 /* somebody or something will hit me for both perl_run and PL_restartop */ 1443 /* somebody or something will hit me for both perl_run and PL_restartop */
1114 PL_restartop = PL_op; 1444 PL_restartop = PL_op;
1115 perl_run (PL_curinterp); 1445 perl_run (PL_curinterp);
1446 /*
1447 * Unfortunately, there is no way to get at the return values of the
1448 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1449 * runtime errors here, as this is just a random interpreter, not a thread.
1450 */
1116 1451
1117 /* 1452 /*
1118 * If perl-run returns we assume exit() was being called or the coro 1453 * If perl-run returns we assume exit() was being called or the coro
1119 * fell off the end, which seems to be the only valid (non-bug) 1454 * fell off the end, which seems to be the only valid (non-bug)
1120 * reason for perl_run to return. We try to exit by jumping to the 1455 * reason for perl_run to return. We try to exit by jumping to the
1121 * bootstrap-time "top" top_env, as we cannot restore the "main" 1456 * bootstrap-time "top" top_env, as we cannot restore the "main"
1122 * coroutine as Coro has no such concept 1457 * coroutine as Coro has no such concept.
1458 * This actually isn't valid with the pthread backend, but OSes requiring
1459 * that backend are too broken to do it in a standards-compliant way.
1123 */ 1460 */
1124 PL_top_env = main_top_env; 1461 PL_top_env = main_top_env;
1125 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1462 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1126 } 1463 }
1127} 1464}
1128 1465
1129static coro_cctx * 1466static coro_cctx *
1130cctx_new () 1467cctx_new (void)
1131{ 1468{
1132 coro_cctx *cctx; 1469 coro_cctx *cctx;
1133 1470
1134 ++cctx_count; 1471 ++cctx_count;
1135 New (0, cctx, 1, coro_cctx); 1472 New (0, cctx, 1, coro_cctx);
… …
1141 return cctx; 1478 return cctx;
1142} 1479}
1143 1480
1144/* create a new cctx only suitable as source */ 1481/* create a new cctx only suitable as source */
1145static coro_cctx * 1482static coro_cctx *
1146cctx_new_empty () 1483cctx_new_empty (void)
1147{ 1484{
1148 coro_cctx *cctx = cctx_new (); 1485 coro_cctx *cctx = cctx_new ();
1149 1486
1150 cctx->sptr = 0; 1487 cctx->sptr = 0;
1151 coro_create (&cctx->cctx, 0, 0, 0, 0); 1488 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1153 return cctx; 1490 return cctx;
1154} 1491}
1155 1492
1156/* create a new cctx suitable as destination/running a perl interpreter */ 1493/* create a new cctx suitable as destination/running a perl interpreter */
1157static coro_cctx * 1494static coro_cctx *
1158cctx_new_run () 1495cctx_new_run (void)
1159{ 1496{
1160 coro_cctx *cctx = cctx_new (); 1497 coro_cctx *cctx = cctx_new ();
1161 void *stack_start; 1498 void *stack_start;
1162 size_t stack_size; 1499 size_t stack_size;
1163 1500
1164#if HAVE_MMAP 1501#if HAVE_MMAP
1165 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1502 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1166 /* mmap supposedly does allocate-on-write for us */ 1503 /* mmap supposedly does allocate-on-write for us */
1167 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1504 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1168 1505
1169 if (cctx->sptr != (void *)-1) 1506 if (cctx->sptr != (void *)-1)
1170 { 1507 {
1171 #if CORO_STACKGUARD 1508 #if CORO_STACKGUARD
1172 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1509 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1204cctx_destroy (coro_cctx *cctx) 1541cctx_destroy (coro_cctx *cctx)
1205{ 1542{
1206 if (!cctx) 1543 if (!cctx)
1207 return; 1544 return;
1208 1545
1546 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1547
1209 --cctx_count; 1548 --cctx_count;
1210 coro_destroy (&cctx->cctx); 1549 coro_destroy (&cctx->cctx);
1211 1550
1212 /* coro_transfer creates new, empty cctx's */ 1551 /* coro_transfer creates new, empty cctx's */
1213 if (cctx->sptr) 1552 if (cctx->sptr)
… …
1231#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1570#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1232 1571
1233static coro_cctx * 1572static coro_cctx *
1234cctx_get (pTHX) 1573cctx_get (pTHX)
1235{ 1574{
1236 while (expect_true (cctx_first)) 1575 while (ecb_expect_true (cctx_first))
1237 { 1576 {
1238 coro_cctx *cctx = cctx_first; 1577 coro_cctx *cctx = cctx_first;
1239 cctx_first = cctx->next; 1578 cctx_first = cctx->next;
1240 --cctx_idle; 1579 --cctx_idle;
1241 1580
1242 if (expect_true (!CCTX_EXPIRED (cctx))) 1581 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1243 return cctx; 1582 return cctx;
1244 1583
1245 cctx_destroy (cctx); 1584 cctx_destroy (cctx);
1246 } 1585 }
1247 1586
… …
1252cctx_put (coro_cctx *cctx) 1591cctx_put (coro_cctx *cctx)
1253{ 1592{
1254 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1593 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1255 1594
1256 /* free another cctx if overlimit */ 1595 /* free another cctx if overlimit */
1257 if (expect_false (cctx_idle >= cctx_max_idle)) 1596 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1258 { 1597 {
1259 coro_cctx *first = cctx_first; 1598 coro_cctx *first = cctx_first;
1260 cctx_first = first->next; 1599 cctx_first = first->next;
1261 --cctx_idle; 1600 --cctx_idle;
1262 1601
… …
1273static void 1612static void
1274transfer_check (pTHX_ struct coro *prev, struct coro *next) 1613transfer_check (pTHX_ struct coro *prev, struct coro *next)
1275{ 1614{
1276 /* TODO: throwing up here is considered harmful */ 1615 /* TODO: throwing up here is considered harmful */
1277 1616
1278 if (expect_true (prev != next)) 1617 if (ecb_expect_true (prev != next))
1279 { 1618 {
1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1619 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1620 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1282 1621
1283 if (expect_false (next->flags & CF_RUNNING)) 1622 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1285
1286 if (expect_false (next->flags & CF_DESTROYED))
1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1623 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1288 1624
1289#if !PERL_VERSION_ATLEAST (5,10,0) 1625#if !PERL_VERSION_ATLEAST (5,10,0)
1290 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1626 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1627 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1292#endif 1628#endif
1293 } 1629 }
1294} 1630}
1295 1631
1296/* always use the TRANSFER macro */ 1632/* always use the TRANSFER macro */
1297static void NOINLINE /* noinline so we have a fixed stackframe */ 1633static void ecb_noinline /* noinline so we have a fixed stackframe */
1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1634transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1299{ 1635{
1300 dSTACKLEVEL; 1636 dSTACKLEVEL;
1301 1637
1302 /* sometimes transfer is only called to set idle_sp */ 1638 /* sometimes transfer is only called to set idle_sp */
1303 if (expect_false (!next)) 1639 if (ecb_expect_false (!prev))
1304 { 1640 {
1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1641 cctx_current->idle_sp = STACKLEVEL;
1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1642 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1307 } 1643 }
1308 else if (expect_true (prev != next)) 1644 else if (ecb_expect_true (prev != next))
1309 { 1645 {
1310 coro_cctx *prev__cctx; 1646 coro_cctx *cctx_prev;
1311 1647
1312 if (expect_false (prev->flags & CF_NEW)) 1648 if (ecb_expect_false (prev->flags & CF_NEW))
1313 { 1649 {
1314 /* create a new empty/source context */ 1650 /* create a new empty/source context */
1315 prev->cctx = cctx_new_empty ();
1316 prev->flags &= ~CF_NEW; 1651 prev->flags &= ~CF_NEW;
1317 prev->flags |= CF_RUNNING; 1652 prev->flags |= CF_RUNNING;
1318 } 1653 }
1319 1654
1320 prev->flags &= ~CF_RUNNING; 1655 prev->flags &= ~CF_RUNNING;
1321 next->flags |= CF_RUNNING; 1656 next->flags |= CF_RUNNING;
1322 1657
1323 /* first get rid of the old state */ 1658 /* first get rid of the old state */
1324 save_perl (aTHX_ prev); 1659 save_perl (aTHX_ prev);
1325 1660
1326 if (expect_false (next->flags & CF_NEW)) 1661 if (ecb_expect_false (next->flags & CF_NEW))
1327 { 1662 {
1328 /* need to start coroutine */ 1663 /* need to start coroutine */
1329 next->flags &= ~CF_NEW; 1664 next->flags &= ~CF_NEW;
1330 /* setup coroutine call */ 1665 /* setup coroutine call */
1331 coro_setup (aTHX_ next); 1666 init_perl (aTHX_ next);
1332 } 1667 }
1333 else 1668 else
1334 load_perl (aTHX_ next); 1669 load_perl (aTHX_ next);
1335 1670
1336 prev__cctx = prev->cctx;
1337
1338 /* possibly untie and reuse the cctx */ 1671 /* possibly untie and reuse the cctx */
1339 if (expect_true ( 1672 if (ecb_expect_true (
1340 prev__cctx->idle_sp == (void *)stacklevel 1673 cctx_current->idle_sp == STACKLEVEL
1341 && !(prev__cctx->flags & CC_TRACE) 1674 && !(cctx_current->flags & CC_TRACE)
1342 && !force_cctx 1675 && !force_cctx
1343 )) 1676 ))
1344 { 1677 {
1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1678 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1679 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1347 1680
1348 prev->cctx = 0;
1349
1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1681 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1682 /* without this the next cctx_get might destroy the running cctx while still in use */
1352 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1683 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1353 if (!next->cctx) 1684 if (ecb_expect_true (!next->cctx))
1354 next->cctx = cctx_get (aTHX); 1685 next->cctx = cctx_get (aTHX);
1355 1686
1356 cctx_put (prev__cctx); 1687 cctx_put (cctx_current);
1357 } 1688 }
1689 else
1690 prev->cctx = cctx_current;
1358 1691
1359 ++next->usecount; 1692 ++next->usecount;
1360 1693
1361 if (expect_true (!next->cctx)) 1694 cctx_prev = cctx_current;
1362 next->cctx = cctx_get (aTHX); 1695 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1363 1696
1364 if (expect_false (prev__cctx != next->cctx)) 1697 next->cctx = 0;
1698
1699 if (ecb_expect_false (cctx_prev != cctx_current))
1365 { 1700 {
1366 prev__cctx->top_env = PL_top_env; 1701 cctx_prev->top_env = PL_top_env;
1367 PL_top_env = next->cctx->top_env; 1702 PL_top_env = cctx_current->top_env;
1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1703 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1369 } 1704 }
1370 1705
1371 transfer_tail (aTHX); 1706 transfer_tail (aTHX);
1372 } 1707 }
1373} 1708}
… …
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1710#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1711#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1712
1378/** high level stuff ********************************************************/ 1713/** high level stuff ********************************************************/
1379 1714
1715/* this function is actually Coro, not Coro::State, but we call it from here */
1716/* because it is convenient - but it hasn't been declared yet for that reason */
1380static int 1717static void
1718coro_call_on_destroy (pTHX_ struct coro *coro);
1719
1720static void
1381coro_state_destroy (pTHX_ struct coro *coro) 1721coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1722{
1383 if (coro->flags & CF_DESTROYED) 1723 if (coro->flags & CF_ZOMBIE)
1384 return 0; 1724 return;
1385 1725
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro); 1726 slf_destroy (aTHX_ coro);
1388 1727
1389 coro->flags |= CF_DESTROYED; 1728 coro->flags |= CF_ZOMBIE;
1390 1729
1391 if (coro->flags & CF_READY) 1730 if (coro->flags & CF_READY)
1392 { 1731 {
1393 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1732 /* reduce nready, as destroying a ready coro effectively unreadies it */
1394 /* alternative: look through all ready queues and remove the coro */ 1733 /* alternative: look through all ready queues and remove the coro */
1395 --coro_nready; 1734 --coro_nready;
1396 } 1735 }
1397 else 1736 else
1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1737 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1399 1738
1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1401 {
1402 struct coro temp;
1403
1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1405
1406 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro);
1408
1409 coro_destruct (aTHX_ coro);
1410
1411 load_perl (aTHX_ &temp);
1412
1413 coro->slot = 0;
1414 }
1415
1416 cctx_destroy (coro->cctx);
1417 SvREFCNT_dec (coro->args);
1418
1419 if (coro->next) coro->next->prev = coro->prev; 1739 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1740 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1741 if (coro == coro_first) coro_first = coro->next;
1422 1742
1423 return 1; 1743 if (coro->mainstack
1744 && coro->mainstack != main_mainstack
1745 && coro->slot
1746 && !PL_dirty)
1747 destroy_perl (aTHX_ coro);
1748
1749 cctx_destroy (coro->cctx);
1750 SvREFCNT_dec (coro->startcv);
1751 SvREFCNT_dec (coro->args);
1752 SvREFCNT_dec (coro->swap_sv);
1753 SvREFCNT_dec (CORO_THROW);
1754
1755 coro_call_on_destroy (aTHX_ coro);
1756
1757 /* more destruction mayhem in coro_state_free */
1424} 1758}
1425 1759
1426static int 1760static int
1427coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1761coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1428{ 1762{
1429 struct coro *coro = (struct coro *)mg->mg_ptr; 1763 struct coro *coro = (struct coro *)mg->mg_ptr;
1430 mg->mg_ptr = 0; 1764 mg->mg_ptr = 0;
1431 1765
1432 coro->hv = 0;
1433
1434 if (--coro->refcnt < 0)
1435 {
1436 coro_state_destroy (aTHX_ coro); 1766 coro_state_destroy (aTHX_ coro);
1767 SvREFCNT_dec (coro->on_destroy);
1768 SvREFCNT_dec (coro->status);
1769
1437 Safefree (coro); 1770 Safefree (coro);
1438 }
1439 1771
1440 return 0; 1772 return 0;
1441} 1773}
1442 1774
1443static int 1775static int ecb_cold
1444coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1776coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1445{ 1777{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1778 /* called when perl clones the current process the slow way (windows process emulation) */
1447 1779 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1448 ++coro->refcnt; 1780 mg->mg_ptr = 0;
1781 mg->mg_virtual = 0;
1449 1782
1450 return 0; 1783 return 0;
1451} 1784}
1452 1785
1453static MGVTBL coro_state_vtbl = { 1786static MGVTBL coro_state_vtbl = {
… …
1478 TRANSFER (ta, 1); 1811 TRANSFER (ta, 1);
1479} 1812}
1480 1813
1481/** Coro ********************************************************************/ 1814/** Coro ********************************************************************/
1482 1815
1483INLINE void 1816ecb_inline void
1484coro_enq (pTHX_ struct coro *coro) 1817coro_enq (pTHX_ struct coro *coro)
1485{ 1818{
1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1819 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1487}
1488 1820
1489INLINE SV * 1821 SvREFCNT_inc_NN (coro->hv);
1822
1823 coro->next_ready = 0;
1824 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1825 ready [1] = coro;
1826}
1827
1828ecb_inline struct coro *
1490coro_deq (pTHX) 1829coro_deq (pTHX)
1491{ 1830{
1492 int prio; 1831 int prio;
1493 1832
1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1833 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1495 if (AvFILLp (coro_ready [prio]) >= 0) 1834 {
1496 return av_shift (coro_ready [prio]); 1835 struct coro **ready = coro_ready [prio];
1836
1837 if (ready [0])
1838 {
1839 struct coro *coro = ready [0];
1840 ready [0] = coro->next_ready;
1841 return coro;
1842 }
1843 }
1497 1844
1498 return 0; 1845 return 0;
1846}
1847
1848static void
1849invoke_sv_ready_hook_helper (void)
1850{
1851 dTHX;
1852 dSP;
1853
1854 ENTER;
1855 SAVETMPS;
1856
1857 PUSHMARK (SP);
1858 PUTBACK;
1859 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1860
1861 FREETMPS;
1862 LEAVE;
1499} 1863}
1500 1864
1501static int 1865static int
1502api_ready (pTHX_ SV *coro_sv) 1866api_ready (pTHX_ SV *coro_sv)
1503{ 1867{
1504 struct coro *coro;
1505 SV *sv_hook;
1506 void (*xs_hook)(void);
1507
1508 if (SvROK (coro_sv))
1509 coro_sv = SvRV (coro_sv);
1510
1511 coro = SvSTATE (coro_sv); 1868 struct coro *coro = SvSTATE (coro_sv);
1512 1869
1513 if (coro->flags & CF_READY) 1870 if (coro->flags & CF_READY)
1514 return 0; 1871 return 0;
1515 1872
1516 coro->flags |= CF_READY; 1873 coro->flags |= CF_READY;
1517 1874
1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1520
1521 coro_enq (aTHX_ coro); 1875 coro_enq (aTHX_ coro);
1522 ++coro_nready;
1523 1876
1524 if (sv_hook) 1877 if (!coro_nready++)
1525 { 1878 if (coroapi.readyhook)
1526 dSP; 1879 coroapi.readyhook ();
1527
1528 ENTER;
1529 SAVETMPS;
1530
1531 PUSHMARK (SP);
1532 PUTBACK;
1533 call_sv (sv_hook, G_DISCARD);
1534 SPAGAIN;
1535
1536 FREETMPS;
1537 LEAVE;
1538 }
1539
1540 if (xs_hook)
1541 xs_hook ();
1542 1880
1543 return 1; 1881 return 1;
1544} 1882}
1545 1883
1546static int 1884static int
1547api_is_ready (pTHX_ SV *coro_sv) 1885api_is_ready (pTHX_ SV *coro_sv)
1548{ 1886{
1549 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1887 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1550} 1888}
1551 1889
1552INLINE void 1890/* expects to own a reference to next->hv */
1891ecb_inline void
1553prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1892prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1554{ 1893{
1555 SV *prev_sv, *next_sv;
1556
1557 for (;;)
1558 {
1559 next_sv = coro_deq (aTHX);
1560
1561 /* nothing to schedule: call the idle handler */
1562 if (expect_false (!next_sv))
1563 {
1564 dSP;
1565
1566 ENTER;
1567 SAVETMPS;
1568
1569 PUSHMARK (SP);
1570 PUTBACK;
1571 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1572 SPAGAIN;
1573
1574 FREETMPS;
1575 LEAVE;
1576 continue;
1577 }
1578
1579 ta->next = SvSTATE_hv (next_sv);
1580
1581 /* cannot transfer to destroyed coros, skip and look for next */
1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1583 {
1584 SvREFCNT_dec (next_sv);
1585 /* coro_nready has already been taken care of by destroy */
1586 continue;
1587 }
1588
1589 --coro_nready;
1590 break;
1591 }
1592
1593 /* free this only after the transfer */
1594 prev_sv = SvRV (coro_current); 1894 SV *prev_sv = SvRV (coro_current);
1895
1595 ta->prev = SvSTATE_hv (prev_sv); 1896 ta->prev = SvSTATE_hv (prev_sv);
1897 ta->next = next;
1898
1596 TRANSFER_CHECK (*ta); 1899 TRANSFER_CHECK (*ta);
1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1900
1598 ta->next->flags &= ~CF_READY;
1599 SvRV_set (coro_current, next_sv); 1901 SvRV_set (coro_current, (SV *)next->hv);
1600 1902
1601 free_coro_mortal (aTHX); 1903 free_coro_mortal (aTHX);
1602 coro_mortal = prev_sv; 1904 coro_mortal = prev_sv;
1603} 1905}
1604 1906
1605INLINE void 1907static void
1908prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1909{
1910 for (;;)
1911 {
1912 struct coro *next = coro_deq (aTHX);
1913
1914 if (ecb_expect_true (next))
1915 {
1916 /* cannot transfer to destroyed coros, skip and look for next */
1917 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1918 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1919 else
1920 {
1921 next->flags &= ~CF_READY;
1922 --coro_nready;
1923
1924 prepare_schedule_to (aTHX_ ta, next);
1925 break;
1926 }
1927 }
1928 else
1929 {
1930 /* nothing to schedule: call the idle handler */
1931 if (SvROK (sv_idle)
1932 && SvOBJECT (SvRV (sv_idle)))
1933 {
1934 if (SvRV (sv_idle) == SvRV (coro_current))
1935 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1936
1937 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1938 api_ready (aTHX_ SvRV (sv_idle));
1939 --coro_nready;
1940 }
1941 else
1942 {
1943 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1944 dSP;
1945
1946 ENTER;
1947 SAVETMPS;
1948
1949 PUSHMARK (SP);
1950 PUTBACK;
1951 call_sv (sv_idle, G_VOID | G_DISCARD);
1952
1953 FREETMPS;
1954 LEAVE;
1955 }
1956 }
1957 }
1958}
1959
1960ecb_inline void
1606prepare_cede (pTHX_ struct coro_transfer_args *ta) 1961prepare_cede (pTHX_ struct coro_transfer_args *ta)
1607{ 1962{
1608 api_ready (aTHX_ coro_current); 1963 api_ready (aTHX_ coro_current);
1609 prepare_schedule (aTHX_ ta); 1964 prepare_schedule (aTHX_ ta);
1610} 1965}
1611 1966
1612INLINE void 1967ecb_inline void
1613prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1968prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1614{ 1969{
1615 SV *prev = SvRV (coro_current); 1970 SV *prev = SvRV (coro_current);
1616 1971
1617 if (coro_nready) 1972 if (coro_nready)
… …
1630 1985
1631 prepare_schedule (aTHX_ &ta); 1986 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1); 1987 TRANSFER (ta, 1);
1633} 1988}
1634 1989
1990static void
1991api_schedule_to (pTHX_ SV *coro_sv)
1992{
1993 struct coro_transfer_args ta;
1994 struct coro *next = SvSTATE (coro_sv);
1995
1996 SvREFCNT_inc_NN (coro_sv);
1997 prepare_schedule_to (aTHX_ &ta, next);
1998}
1999
1635static int 2000static int
1636api_cede (pTHX) 2001api_cede (pTHX)
1637{ 2002{
1638 struct coro_transfer_args ta; 2003 struct coro_transfer_args ta;
1639 2004
1640 prepare_cede (aTHX_ &ta); 2005 prepare_cede (aTHX_ &ta);
1641 2006
1642 if (expect_true (ta.prev != ta.next)) 2007 if (ecb_expect_true (ta.prev != ta.next))
1643 { 2008 {
1644 TRANSFER (ta, 1); 2009 TRANSFER (ta, 1);
1645 return 1; 2010 return 1;
1646 } 2011 }
1647 else 2012 else
… …
1666static void 2031static void
1667api_trace (pTHX_ SV *coro_sv, int flags) 2032api_trace (pTHX_ SV *coro_sv, int flags)
1668{ 2033{
1669 struct coro *coro = SvSTATE (coro_sv); 2034 struct coro *coro = SvSTATE (coro_sv);
1670 2035
2036 if (coro->flags & CF_RUNNING)
2037 croak ("cannot enable tracing on a running coroutine, caught");
2038
1671 if (flags & CC_TRACE) 2039 if (flags & CC_TRACE)
1672 { 2040 {
1673 if (!coro->cctx) 2041 if (!coro->cctx)
1674 coro->cctx = cctx_new_run (); 2042 coro->cctx = cctx_new_run ();
1675 else if (!(coro->cctx->flags & CC_TRACE)) 2043 else if (!(coro->cctx->flags & CC_TRACE))
1676 croak ("cannot enable tracing on coroutine with custom stack,"); 2044 croak ("cannot enable tracing on coroutine with custom stack, caught");
1677 2045
1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2046 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1679 } 2047 }
1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2048 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1681 { 2049 {
… …
1684 if (coro->flags & CF_RUNNING) 2052 if (coro->flags & CF_RUNNING)
1685 PL_runops = RUNOPS_DEFAULT; 2053 PL_runops = RUNOPS_DEFAULT;
1686 else 2054 else
1687 coro->slot->runops = RUNOPS_DEFAULT; 2055 coro->slot->runops = RUNOPS_DEFAULT;
1688 } 2056 }
2057}
2058
2059static void
2060coro_push_av (pTHX_ AV *av, I32 gimme_v)
2061{
2062 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2063 {
2064 dSP;
2065
2066 if (gimme_v == G_SCALAR)
2067 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2068 else
2069 {
2070 int i;
2071 EXTEND (SP, AvFILLp (av) + 1);
2072
2073 for (i = 0; i <= AvFILLp (av); ++i)
2074 PUSHs (AvARRAY (av)[i]);
2075 }
2076
2077 PUTBACK;
2078 }
2079}
2080
2081static void
2082coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2083{
2084 if (!coro->on_destroy)
2085 coro->on_destroy = newAV ();
2086
2087 av_push (coro->on_destroy, cb);
2088}
2089
2090static void
2091slf_destroy_join (pTHX_ struct CoroSLF *frame)
2092{
2093 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2094}
2095
2096static int
2097slf_check_join (pTHX_ struct CoroSLF *frame)
2098{
2099 struct coro *coro = (struct coro *)frame->data;
2100
2101 if (!coro->status)
2102 return 1;
2103
2104 frame->destroy = 0;
2105
2106 coro_push_av (aTHX_ coro->status, GIMME_V);
2107
2108 SvREFCNT_dec ((SV *)coro->hv);
2109
2110 return 0;
2111}
2112
2113static void
2114slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2117
2118 if (items > 1)
2119 croak ("join called with too many arguments");
2120
2121 if (coro->status)
2122 frame->prepare = prepare_nop;
2123 else
2124 {
2125 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2126 frame->prepare = prepare_schedule;
2127 }
2128
2129 frame->check = slf_check_join;
2130 frame->destroy = slf_destroy_join;
2131 frame->data = (void *)coro;
2132 SvREFCNT_inc (coro->hv);
2133}
2134
2135static void
2136coro_call_on_destroy (pTHX_ struct coro *coro)
2137{
2138 AV *od = coro->on_destroy;
2139
2140 if (!od)
2141 return;
2142
2143 while (AvFILLp (od) >= 0)
2144 {
2145 SV *cb = sv_2mortal (av_pop (od));
2146
2147 /* coro hv's (and only hv's at the moment) are supported as well */
2148 if (SvSTATEhv_p (aTHX_ cb))
2149 api_ready (aTHX_ cb);
2150 else
2151 {
2152 dSP; /* don't disturb outer sp */
2153 PUSHMARK (SP);
2154
2155 if (coro->status)
2156 {
2157 PUTBACK;
2158 coro_push_av (aTHX_ coro->status, G_ARRAY);
2159 SPAGAIN;
2160 }
2161
2162 PUTBACK;
2163 call_sv (cb, G_VOID | G_DISCARD);
2164 }
2165 }
2166}
2167
2168static void
2169coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2170{
2171 AV *av;
2172
2173 if (coro->status)
2174 {
2175 av = coro->status;
2176 av_clear (av);
2177 }
2178 else
2179 av = coro->status = newAV ();
2180
2181 /* items are actually not so common, so optimise for this case */
2182 if (items)
2183 {
2184 int i;
2185
2186 av_extend (av, items - 1);
2187
2188 for (i = 0; i < items; ++i)
2189 av_push (av, SvREFCNT_inc_NN (arg [i]));
2190 }
2191}
2192
2193static void
2194slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2195{
2196 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2197 api_ready (aTHX_ sv_manager);
2198
2199 frame->prepare = prepare_schedule;
2200 frame->check = slf_check_repeat;
2201
2202 /* as a minor optimisation, we could unwind all stacks here */
2203 /* but that puts extra pressure on pp_slf, and is not worth much */
2204 /*coro_unwind_stacks (aTHX);*/
2205}
2206
2207static void
2208slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2209{
2210 HV *coro_hv = (HV *)SvRV (coro_current);
2211
2212 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2213 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2214}
2215
2216static void
2217slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2218{
2219 HV *coro_hv;
2220 struct coro *coro;
2221
2222 if (items <= 0)
2223 croak ("Coro::cancel called without coro object,");
2224
2225 coro = SvSTATE (arg [0]);
2226 coro_hv = coro->hv;
2227
2228 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2229
2230 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2231 {
2232 /* coro currently busy cancelling something, so just notify it */
2233 coro->slf_frame.data = (void *)coro;
2234
2235 frame->prepare = prepare_nop;
2236 frame->check = slf_check_nop;
2237 }
2238 else if (coro_hv == (HV *)SvRV (coro_current))
2239 {
2240 /* cancelling the current coro is allowed, and equals terminate */
2241 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2242 }
2243 else
2244 {
2245 struct coro *self = SvSTATE_current;
2246
2247 /* otherwise we cancel directly, purely for speed reasons
2248 * unfortunately, this requires some magic trickery, as
2249 * somebody else could cancel us, so we have to fight the cancellation.
2250 * this is ugly, and hopefully fully worth the extra speed.
2251 * besides, I can't get the slow-but-safe version working...
2252 */
2253 slf_frame.data = 0;
2254 self->flags |= CF_NOCANCEL;
2255 coro_state_destroy (aTHX_ coro);
2256 self->flags &= ~CF_NOCANCEL;
2257
2258 if (slf_frame.data)
2259 {
2260 /* while we were busy we have been cancelled, so terminate */
2261 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2262 }
2263 else
2264 {
2265 frame->prepare = prepare_nop;
2266 frame->check = slf_check_nop;
2267 }
2268 }
2269}
2270
2271static int
2272slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2273{
2274 frame->prepare = 0;
2275 coro_unwind_stacks (aTHX);
2276
2277 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2278
2279 return 1;
2280}
2281
2282static int
2283safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2284{
2285 if (coro->cctx)
2286 croak ("coro inside C callback, unable to cancel at this time, caught");
2287
2288 if (coro->flags & CF_NEW)
2289 {
2290 coro_set_status (aTHX_ coro, arg, items);
2291 coro_state_destroy (aTHX_ coro);
2292 }
2293 else
2294 {
2295 if (!coro->slf_frame.prepare)
2296 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2297
2298 slf_destroy (aTHX_ coro);
2299
2300 coro_set_status (aTHX_ coro, arg, items);
2301 coro->slf_frame.prepare = prepare_nop;
2302 coro->slf_frame.check = slf_check_safe_cancel;
2303
2304 api_ready (aTHX_ (SV *)coro->hv);
2305 }
2306
2307 return 1;
2308}
2309
2310/*****************************************************************************/
2311/* async pool handler */
2312
2313static int
2314slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2315{
2316 HV *hv = (HV *)SvRV (coro_current);
2317 struct coro *coro = (struct coro *)frame->data;
2318
2319 if (!coro->invoke_cb)
2320 return 1; /* loop till we have invoke */
2321 else
2322 {
2323 hv_store (hv, "desc", sizeof ("desc") - 1,
2324 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2325
2326 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2327
2328 {
2329 dSP;
2330 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2331 PUTBACK;
2332 }
2333
2334 SvREFCNT_dec (GvAV (PL_defgv));
2335 GvAV (PL_defgv) = coro->invoke_av;
2336 coro->invoke_av = 0;
2337
2338 return 0;
2339 }
2340}
2341
2342static void
2343slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2344{
2345 HV *hv = (HV *)SvRV (coro_current);
2346 struct coro *coro = SvSTATE_hv ((SV *)hv);
2347
2348 if (ecb_expect_true (coro->saved_deffh))
2349 {
2350 /* subsequent iteration */
2351 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2352 coro->saved_deffh = 0;
2353
2354 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2355 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2356 {
2357 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2358 return;
2359 }
2360 else
2361 {
2362 av_clear (GvAV (PL_defgv));
2363 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2364
2365 coro->prio = 0;
2366
2367 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2368 api_trace (aTHX_ coro_current, 0);
2369
2370 frame->prepare = prepare_schedule;
2371 av_push (av_async_pool, SvREFCNT_inc (hv));
2372 }
2373 }
2374 else
2375 {
2376 /* first iteration, simply fall through */
2377 frame->prepare = prepare_nop;
2378 }
2379
2380 frame->check = slf_check_pool_handler;
2381 frame->data = (void *)coro;
2382}
2383
2384/*****************************************************************************/
2385/* rouse callback */
2386
2387#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2388
2389static void
2390coro_rouse_callback (pTHX_ CV *cv)
2391{
2392 dXSARGS;
2393 SV *data = (SV *)S_GENSUB_ARG;
2394
2395 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2396 {
2397 /* first call, set args */
2398 SV *coro = SvRV (data);
2399 AV *av = newAV ();
2400
2401 SvRV_set (data, (SV *)av);
2402
2403 /* better take a full copy of the arguments */
2404 while (items--)
2405 av_store (av, items, newSVsv (ST (items)));
2406
2407 api_ready (aTHX_ coro);
2408 SvREFCNT_dec (coro);
2409 }
2410
2411 XSRETURN_EMPTY;
2412}
2413
2414static int
2415slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2416{
2417 SV *data = (SV *)frame->data;
2418
2419 if (CORO_THROW)
2420 return 0;
2421
2422 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2423 return 1;
2424
2425 /* now push all results on the stack */
2426 {
2427 dSP;
2428 AV *av = (AV *)SvRV (data);
2429 int i;
2430
2431 EXTEND (SP, AvFILLp (av) + 1);
2432 for (i = 0; i <= AvFILLp (av); ++i)
2433 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2434
2435 /* we have stolen the elements, so set length to zero and free */
2436 AvFILLp (av) = -1;
2437 av_undef (av);
2438
2439 PUTBACK;
2440 }
2441
2442 return 0;
2443}
2444
2445static void
2446slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2447{
2448 SV *cb;
2449
2450 if (items)
2451 cb = arg [0];
2452 else
2453 {
2454 struct coro *coro = SvSTATE_current;
2455
2456 if (!coro->rouse_cb)
2457 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2458
2459 cb = sv_2mortal (coro->rouse_cb);
2460 coro->rouse_cb = 0;
2461 }
2462
2463 if (!SvROK (cb)
2464 || SvTYPE (SvRV (cb)) != SVt_PVCV
2465 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2466 croak ("Coro::rouse_wait called with illegal callback argument,");
2467
2468 {
2469 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2470 SV *data = (SV *)S_GENSUB_ARG;
2471
2472 frame->data = (void *)data;
2473 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2474 frame->check = slf_check_rouse_wait;
2475 }
2476}
2477
2478static SV *
2479coro_new_rouse_cb (pTHX)
2480{
2481 HV *hv = (HV *)SvRV (coro_current);
2482 struct coro *coro = SvSTATE_hv (hv);
2483 SV *data = newRV_inc ((SV *)hv);
2484 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2485
2486 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2487 SvREFCNT_dec (data); /* magicext increases the refcount */
2488
2489 SvREFCNT_dec (coro->rouse_cb);
2490 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2491
2492 return cb;
1689} 2493}
1690 2494
1691/*****************************************************************************/ 2495/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */ 2496/* schedule-like-function opcode (SLF) */
1693 2497
… …
1717 2521
1718 RETURNOP (slf_restore.op_first); 2522 RETURNOP (slf_restore.op_first);
1719} 2523}
1720 2524
1721static void 2525static void
1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1723{
1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1725}
1726
1727static void
1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1729{
1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2526slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{ 2527{
1740 SV **arg = (SV **)slf_frame.data; 2528 SV **arg = (SV **)slf_frame.data;
1741 2529
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2530 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1759 frame->prepare = prepare_schedule; 2547 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop; 2548 frame->check = slf_check_nop;
1761} 2549}
1762 2550
1763static void 2551static void
2552slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2553{
2554 struct coro *next = (struct coro *)slf_frame.data;
2555
2556 SvREFCNT_inc_NN (next->hv);
2557 prepare_schedule_to (aTHX_ ta, next);
2558}
2559
2560static void
2561slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2562{
2563 if (!items)
2564 croak ("Coro::schedule_to expects a coroutine argument, caught");
2565
2566 frame->data = (void *)SvSTATE (arg [0]);
2567 frame->prepare = slf_prepare_schedule_to;
2568 frame->check = slf_check_nop;
2569}
2570
2571static void
2572slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2573{
2574 api_ready (aTHX_ SvRV (coro_current));
2575
2576 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2577}
2578
2579static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2580slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{ 2581{
1766 frame->prepare = prepare_cede; 2582 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop; 2583 frame->check = slf_check_nop;
1768} 2584}
… …
1772{ 2588{
1773 frame->prepare = prepare_cede_notself; 2589 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop; 2590 frame->check = slf_check_nop;
1775} 2591}
1776 2592
1777/* we hijack an hopefully unused CV flag for our purposes */ 2593/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1778#define CVf_SLF 0x4000 2594static void
2595slf_destroy (pTHX_ struct coro *coro)
2596{
2597 /* this callback is reserved for slf functions needing to do cleanup */
2598 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2599 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2600
2601 /*
2602 * The on_destroy above most likely is from an SLF call.
2603 * Since by definition the SLF call will not finish when we destroy
2604 * the coro, we will have to force-finish it here, otherwise
2605 * cleanup functions cannot call SLF functions.
2606 */
2607 coro->slf_frame.prepare = 0;
2608}
1779 2609
1780/* 2610/*
1781 * these not obviously related functions are all rolled into one 2611 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2612 * function to increase chances that they all will call transfer with the same
1783 * stack offset 2613 * stack offset
… …
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2619 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790 2620
1791 /* set up the slf frame, unless it has already been set-up */ 2621 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */ 2622 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */ 2623 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare)) 2624 if (ecb_expect_true (!slf_frame.prepare))
1795 { 2625 {
1796 /* first iteration */ 2626 /* first iteration */
1797 dSP; 2627 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1; 2628 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */ 2629 int items = SP - arg; /* args without function object */
… …
1839 } 2669 }
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2670 while (slf_frame.check (aTHX_ &slf_frame));
1841 2671
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2672 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2673
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */ 2674 /* exception handling */
1863 if (expect_false (coro_throw)) 2675 if (ecb_expect_false (CORO_THROW))
1864 { 2676 {
1865 SV *exception = sv_2mortal (coro_throw); 2677 SV *exception = sv_2mortal (CORO_THROW);
1866 2678
1867 coro_throw = 0; 2679 CORO_THROW = 0;
1868 sv_setsv (ERRSV, exception); 2680 sv_setsv (ERRSV, exception);
1869 croak (0); 2681 croak (0);
2682 }
2683
2684 /* return value handling - mostly like entersub */
2685 /* make sure we put something on the stack in scalar context */
2686 if (GIMME_V == G_SCALAR
2687 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2688 {
2689 dSP;
2690 SV **bot = PL_stack_base + checkmark;
2691
2692 if (sp == bot) /* too few, push undef */
2693 bot [1] = &PL_sv_undef;
2694 else /* too many, take last one */
2695 bot [1] = *sp;
2696
2697 SP = bot + 1;
2698
2699 PUTBACK;
1870 } 2700 }
1871 2701
1872 return NORMAL; 2702 return NORMAL;
1873} 2703}
1874 2704
… …
1902 if (PL_op->op_flags & OPf_STACKED) 2732 if (PL_op->op_flags & OPf_STACKED)
1903 { 2733 {
1904 if (items > slf_arga) 2734 if (items > slf_arga)
1905 { 2735 {
1906 slf_arga = items; 2736 slf_arga = items;
1907 free (slf_argv); 2737 Safefree (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *)); 2738 New (0, slf_argv, slf_arga, SV *);
1909 } 2739 }
1910 2740
1911 slf_argc = items; 2741 slf_argc = items;
1912 2742
1913 for (i = 0; i < items; ++i) 2743 for (i = 0; i < items; ++i)
… …
1915 } 2745 }
1916 else 2746 else
1917 slf_argc = 0; 2747 slf_argc = 0;
1918 2748
1919 PL_op->op_ppaddr = pp_slf; 2749 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2750 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1921 2751
1922 PL_op = (OP *)&slf_restore; 2752 PL_op = (OP *)&slf_restore;
2753}
2754
2755/*****************************************************************************/
2756/* dynamic wind */
2757
2758static void
2759on_enterleave_call (pTHX_ SV *cb)
2760{
2761 dSP;
2762
2763 PUSHSTACK;
2764
2765 PUSHMARK (SP);
2766 PUTBACK;
2767 call_sv (cb, G_VOID | G_DISCARD);
2768 SPAGAIN;
2769
2770 POPSTACK;
2771}
2772
2773static SV *
2774coro_avp_pop_and_free (pTHX_ AV **avp)
2775{
2776 AV *av = *avp;
2777 SV *res = av_pop (av);
2778
2779 if (AvFILLp (av) < 0)
2780 {
2781 *avp = 0;
2782 SvREFCNT_dec (av);
2783 }
2784
2785 return res;
2786}
2787
2788static void
2789coro_pop_on_enter (pTHX_ void *coro)
2790{
2791 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2792 SvREFCNT_dec (cb);
2793}
2794
2795static void
2796coro_pop_on_leave (pTHX_ void *coro)
2797{
2798 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2799 on_enterleave_call (aTHX_ sv_2mortal (cb));
1923} 2800}
1924 2801
1925/*****************************************************************************/ 2802/*****************************************************************************/
1926/* PerlIO::cede */ 2803/* PerlIO::cede */
1927 2804
… …
1929{ 2806{
1930 PerlIOBuf base; 2807 PerlIOBuf base;
1931 NV next, every; 2808 NV next, every;
1932} PerlIOCede; 2809} PerlIOCede;
1933 2810
1934static IV 2811static IV ecb_cold
1935PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2812PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1936{ 2813{
1937 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2814 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1938 2815
1939 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2816 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1940 self->next = nvtime () + self->every; 2817 self->next = nvtime () + self->every;
1941 2818
1942 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2819 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1943} 2820}
1944 2821
1945static SV * 2822static SV * ecb_cold
1946PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2823PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1947{ 2824{
1948 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2825 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1949 2826
1950 return newSVnv (self->every); 2827 return newSVnv (self->every);
… …
1996 PerlIOBuf_get_cnt, 2873 PerlIOBuf_get_cnt,
1997 PerlIOBuf_set_ptrcnt, 2874 PerlIOBuf_set_ptrcnt,
1998}; 2875};
1999 2876
2000/*****************************************************************************/ 2877/*****************************************************************************/
2878/* Coro::Semaphore & Coro::Signal */
2879
2880static SV *
2881coro_waitarray_new (pTHX_ int count)
2882{
2883 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2884 AV *av = newAV ();
2885 SV **ary;
2886
2887 /* unfortunately, building manually saves memory */
2888 Newx (ary, 2, SV *);
2889 AvALLOC (av) = ary;
2890#if PERL_VERSION_ATLEAST (5,10,0)
2891 AvARRAY (av) = ary;
2892#else
2893 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2894 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2895 SvPVX ((SV *)av) = (char *)ary;
2896#endif
2897 AvMAX (av) = 1;
2898 AvFILLp (av) = 0;
2899 ary [0] = newSViv (count);
2900
2901 return newRV_noinc ((SV *)av);
2902}
2903
2001/* Coro::Semaphore */ 2904/* semaphore */
2002 2905
2003static void 2906static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2907coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{ 2908{
2006 SV *count_sv = AvARRAY (av)[0]; 2909 SV *count_sv = AvARRAY (av)[0];
… …
2018 AvARRAY (av)[0] = AvARRAY (av)[1]; 2921 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv; 2922 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av); 2923 cb = av_shift (av);
2021 2924
2022 if (SvOBJECT (cb)) 2925 if (SvOBJECT (cb))
2926 {
2023 api_ready (aTHX_ cb); 2927 api_ready (aTHX_ cb);
2024 else 2928 --count;
2025 croak ("callbacks not yet supported"); 2929 }
2930 else if (SvTYPE (cb) == SVt_PVCV)
2931 {
2932 dSP;
2933 PUSHMARK (SP);
2934 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2935 PUTBACK;
2936 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2937 }
2026 2938
2027 SvREFCNT_dec (cb); 2939 SvREFCNT_dec (cb);
2028
2029 --count;
2030 } 2940 }
2031} 2941}
2032 2942
2033static void 2943static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2944coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2035{ 2945{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2946 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2947 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2038} 2948}
2039 2949
2040static int 2950static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2951slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2042{ 2952{
2043 AV *av = (AV *)frame->data; 2953 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0]; 2954 SV *count_sv = AvARRAY (av)[0];
2955 SV *coro_hv = SvRV (coro_current);
2045 2956
2957 /* if we are about to throw, don't actually acquire the lock, just throw */
2958 if (CORO_THROW)
2959 return 0;
2046 if (SvIVX (count_sv) > 0) 2960 else if (SvIVX (count_sv) > 0)
2047 { 2961 {
2048 SvSTATE_current->on_destroy = 0; 2962 frame->destroy = 0;
2963
2964 if (acquire)
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2965 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2966 else
2967 coro_semaphore_adjust (aTHX_ av, 0);
2968
2050 return 0; 2969 return 0;
2051 } 2970 }
2052 else 2971 else
2053 { 2972 {
2054 int i; 2973 int i;
2055 /* if we were woken up but can't down, we look through the whole */ 2974 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */ 2975 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */ 2976 /* this avoids some degenerate memory usage cases */
2058 2977 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current)) 2978 if (AvARRAY (av)[i] == coro_hv)
2061 return 1; 2979 return 1;
2062 2980
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2981 av_push (av, SvREFCNT_inc (coro_hv));
2064 return 1; 2982 return 1;
2065 } 2983 }
2066} 2984}
2067 2985
2068static void 2986static int
2987slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2988{
2989 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2990}
2991
2992static int
2993slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2994{
2995 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2996}
2997
2998static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2999slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{ 3000{
2071 AV *av = (AV *)SvRV (arg [0]); 3001 AV *av = (AV *)SvRV (arg [0]);
2072 3002
2073 if (SvIVX (AvARRAY (av)[0]) > 0) 3003 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 { 3004 {
2075 frame->data = (void *)av; 3005 frame->data = (void *)av;
2076 frame->prepare = prepare_nop; 3006 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 3007 }
2079 else 3008 else
2080 { 3009 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3010 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082 3011
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3012 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule; 3013 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */ 3014 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3015 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3016 frame->destroy = coro_semaphore_destroy;
2090 } 3017 }
3018}
2091 3019
3020static void
3021slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3022{
3023 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 3024 frame->check = slf_check_semaphore_down;
2093
2094} 3025}
2095 3026
2096/*****************************************************************************/ 3027static void
2097/* gensub: simple closure generation utility */ 3028slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 3029{
2107 CV *cv = (CV *)newSV (0); 3030 if (items >= 2)
3031 {
3032 /* callback form */
3033 AV *av = (AV *)SvRV (arg [0]);
3034 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 3035
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3036 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 3037
2111 CvANON_on (cv); 3038 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 3039 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 3040
2116 return newRV_noinc ((SV *)cv); 3041 frame->prepare = prepare_nop;
3042 frame->check = slf_check_nop;
3043 }
3044 else
3045 {
3046 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3047 frame->check = slf_check_semaphore_wait;
3048 }
3049}
3050
3051/* signal */
3052
3053static void
3054coro_signal_wake (pTHX_ AV *av, int count)
3055{
3056 SvIVX (AvARRAY (av)[0]) = 0;
3057
3058 /* now signal count waiters */
3059 while (count > 0 && AvFILLp (av) > 0)
3060 {
3061 SV *cb;
3062
3063 /* swap first two elements so we can shift a waiter */
3064 cb = AvARRAY (av)[0];
3065 AvARRAY (av)[0] = AvARRAY (av)[1];
3066 AvARRAY (av)[1] = cb;
3067
3068 cb = av_shift (av);
3069
3070 if (SvTYPE (cb) == SVt_PVCV)
3071 {
3072 dSP;
3073 PUSHMARK (SP);
3074 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3075 PUTBACK;
3076 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3077 }
3078 else
3079 {
3080 api_ready (aTHX_ cb);
3081 sv_setiv (cb, 0); /* signal waiter */
3082 }
3083
3084 SvREFCNT_dec (cb);
3085
3086 --count;
3087 }
3088}
3089
3090static int
3091slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3092{
3093 /* if we are about to throw, also stop waiting */
3094 return SvROK ((SV *)frame->data) && !CORO_THROW;
3095}
3096
3097static void
3098slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3099{
3100 AV *av = (AV *)SvRV (arg [0]);
3101
3102 if (items >= 2)
3103 {
3104 SV *cb_cv = s_get_cv_croak (arg [1]);
3105 av_push (av, SvREFCNT_inc_NN (cb_cv));
3106
3107 if (SvIVX (AvARRAY (av)[0]))
3108 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3109
3110 frame->prepare = prepare_nop;
3111 frame->check = slf_check_nop;
3112 }
3113 else if (SvIVX (AvARRAY (av)[0]))
3114 {
3115 SvIVX (AvARRAY (av)[0]) = 0;
3116 frame->prepare = prepare_nop;
3117 frame->check = slf_check_nop;
3118 }
3119 else
3120 {
3121 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3122
3123 av_push (av, waiter);
3124
3125 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3126 frame->prepare = prepare_schedule;
3127 frame->check = slf_check_signal_wait;
3128 }
2117} 3129}
2118 3130
2119/*****************************************************************************/ 3131/*****************************************************************************/
2120/* Coro::AIO */ 3132/* Coro::AIO */
2121 3133
… …
2132 3144
2133static void 3145static void
2134coro_aio_callback (pTHX_ CV *cv) 3146coro_aio_callback (pTHX_ CV *cv)
2135{ 3147{
2136 dXSARGS; 3148 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 3149 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 3150 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 3151 SV *data_sv = newSV (sizeof (struct io_state));
2140 3152
2141 av_extend (state, items); 3153 av_extend (state, items - 1);
2142 3154
2143 sv_upgrade (data_sv, SVt_PV); 3155 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 3156 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 3157 SvPOK_only (data_sv);
2146 3158
… …
2171static int 3183static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3184slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{ 3185{
2174 AV *state = (AV *)frame->data; 3186 AV *state = (AV *)frame->data;
2175 3187
3188 /* if we are about to throw, return early */
3189 /* this does not cancel the aio request, but at least */
3190 /* it quickly returns */
3191 if (CORO_THROW)
3192 return 0;
3193
2176 /* one element that is an RV? repeat! */ 3194 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3195 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1; 3196 return 1;
2179 3197
2180 /* restore status */ 3198 /* restore status */
… …
2221 dSP; 3239 dSP;
2222 3240
2223 static SV *prio_cv; 3241 static SV *prio_cv;
2224 static SV *prio_sv; 3242 static SV *prio_sv;
2225 3243
2226 if (expect_false (!prio_cv)) 3244 if (ecb_expect_false (!prio_cv))
2227 { 3245 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3246 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0); 3247 prio_sv = newSViv (0);
2230 } 3248 }
2231 3249
… …
2250 3268
2251 for (i = 0; i < items; ++i) 3269 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]); 3270 PUSHs (arg [i]);
2253 3271
2254 /* now push the callback closure */ 3272 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3273 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256 3274
2257 /* now call the AIO function - we assume our request is uncancelable */ 3275 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK; 3276 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD); 3277 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 } 3278 }
2261 3279
2262 /* now that the requets is going, we loop toll we have a result */ 3280 /* now that the request is going, we loop till we have a result */
2263 frame->data = (void *)state; 3281 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule; 3282 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req; 3283 frame->check = slf_check_aio_req;
2266} 3284}
2267 3285
… …
2274 3292
2275 XSRETURN_EMPTY; 3293 XSRETURN_EMPTY;
2276} 3294}
2277 3295
2278/*****************************************************************************/ 3296/*****************************************************************************/
3297
3298#if CORO_CLONE
3299# include "clone.c"
3300#endif
3301
3302/*****************************************************************************/
3303
3304static SV *
3305coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3306{
3307 SV *coro_sv;
3308 struct coro *coro;
3309 MAGIC *mg;
3310 HV *hv;
3311 SV *cb;
3312 int i;
3313
3314 if (argc > 0)
3315 {
3316 cb = s_get_cv_croak (argv [0]);
3317
3318 if (!is_coro)
3319 {
3320 if (CvISXSUB (cb))
3321 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3322
3323 if (!CvROOT (cb))
3324 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3325 }
3326 }
3327
3328 Newz (0, coro, 1, struct coro);
3329 coro->args = newAV ();
3330 coro->flags = CF_NEW;
3331
3332 if (coro_first) coro_first->prev = coro;
3333 coro->next = coro_first;
3334 coro_first = coro;
3335
3336 coro->hv = hv = newHV ();
3337 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3338 mg->mg_flags |= MGf_DUP;
3339 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3340
3341 if (argc > 0)
3342 {
3343 av_extend (coro->args, argc + is_coro - 1);
3344
3345 if (is_coro)
3346 {
3347 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3348 cb = (SV *)cv_coro_run;
3349 }
3350
3351 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3352
3353 for (i = 1; i < argc; i++)
3354 av_push (coro->args, newSVsv (argv [i]));
3355 }
3356
3357 return coro_sv;
3358}
3359
3360#ifndef __cplusplus
3361ecb_cold XS(boot_Coro__State);
3362#endif
3363
3364#if CORO_JIT
3365
3366static void ecb_noinline ecb_cold
3367pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3368{
3369 dSP;
3370 AV *av = newAV ();
3371
3372 av_store (av, 3, newSVuv (d));
3373 av_store (av, 2, newSVuv (c));
3374 av_store (av, 1, newSVuv (b));
3375 av_store (av, 0, newSVuv (a));
3376
3377 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3378
3379 PUTBACK;
3380}
3381
3382static void ecb_noinline ecb_cold
3383jit_init (pTHX)
3384{
3385 dSP;
3386 SV *load, *save;
3387 char *map_base;
3388 char *load_ptr, *save_ptr;
3389 STRLEN load_len, save_len, map_len;
3390 int count;
3391
3392 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3393
3394 PUSHMARK (SP);
3395#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3396# include "state.h"
3397#undef VARx
3398 count = call_pv ("Coro::State::_jit", G_ARRAY);
3399 SPAGAIN;
3400
3401 save = POPs; save_ptr = SvPVbyte (save, save_len);
3402 load = POPs; load_ptr = SvPVbyte (load, load_len);
3403
3404 map_len = load_len + save_len + 16;
3405
3406 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3407
3408 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3409
3410 load_perl_slots = (load_save_perl_slots_type)map_base;
3411 memcpy (map_base, load_ptr, load_len);
3412
3413 map_base += (load_len + 15) & ~15;
3414
3415 save_perl_slots = (load_save_perl_slots_type)map_base;
3416 memcpy (map_base, save_ptr, save_len);
3417
3418 /* we are good citizens and try to make the page read-only, so the evil evil */
3419 /* hackers might have it a bit more difficult */
3420 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3421
3422 PUTBACK;
3423 eval_pv ("undef &Coro::State::_jit", 1);
3424}
3425
3426#endif
2279 3427
2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3428MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2281 3429
2282PROTOTYPES: DISABLE 3430PROTOTYPES: DISABLE
2283 3431
… …
2288 coro_thx = PERL_GET_CONTEXT; 3436 coro_thx = PERL_GET_CONTEXT;
2289# endif 3437# endif
2290#endif 3438#endif
2291 BOOT_PAGESIZE; 3439 BOOT_PAGESIZE;
2292 3440
3441 /* perl defines these to check for existance first, but why it doesn't */
3442 /* just create them one at init time is not clear to me, except for */
3443 /* programs trying to delete them, but... */
3444 /* anyway, we declare this as invalid and make sure they are initialised here */
3445 DEFSV;
3446 ERRSV;
3447
3448 cctx_current = cctx_new_empty ();
3449
2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3450 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3451 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295 3452
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3453 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2297 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3454 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2316 3473
2317 { 3474 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3475 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319 3476
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3477 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf, 3478 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2322 newSVpv ("coro_slf", 0), 0);
2323 3479
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3480 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf, 3481 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2326 newSVpv ("coro schedule like function", 0), 0);
2327 } 3482 }
2328 3483
2329 coroapi.ver = CORO_API_VERSION; 3484 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION; 3485 coroapi.rev = CORO_API_REVISION;
2331 3486
… …
2336 coroapi.prepare_nop = prepare_nop; 3491 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule; 3492 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede; 3493 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself; 3494 coroapi.prepare_cede_notself = prepare_cede_notself;
2340 3495
2341 { 3496 time_init (aTHX);
2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2343 3497
2344 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2348 }
2349
2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3498 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3499#if CORO_JIT
3500 PUTBACK;
3501 jit_init (aTHX);
3502 SPAGAIN;
3503#endif
2351} 3504}
2352 3505
2353SV * 3506SV *
2354new (char *klass, ...) 3507new (SV *klass, ...)
3508 ALIAS:
3509 Coro::new = 1
2355 CODE: 3510 CODE:
2356{ 3511 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2357 struct coro *coro; 3512 OUTPUT:
2358 MAGIC *mg;
2359 HV *hv;
2360 int i;
2361
2362 Newz (0, coro, 1, struct coro);
2363 coro->args = newAV ();
2364 coro->flags = CF_NEW;
2365
2366 if (coro_first) coro_first->prev = coro;
2367 coro->next = coro_first;
2368 coro_first = coro;
2369
2370 coro->hv = hv = newHV ();
2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2374
2375 av_extend (coro->args, items - 1);
2376 for (i = 1; i < items; i++)
2377 av_push (coro->args, newSVsv (ST (i)));
2378}
2379 OUTPUT:
2380 RETVAL 3513 RETVAL
2381
2382void
2383_set_stacklevel (...)
2384 CODE:
2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2386 3514
2387void 3515void
2388transfer (...) 3516transfer (...)
2389 PROTOTYPE: $$ 3517 PROTOTYPE: $$
2390 CODE: 3518 CODE:
2391 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3519 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2392 3520
2393bool
2394_destroy (SV *coro_sv)
2395 CODE:
2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2397 OUTPUT:
2398 RETVAL
2399
2400void 3521void
2401_exit (int code) 3522_exit (int code)
2402 PROTOTYPE: $ 3523 PROTOTYPE: $
2403 CODE: 3524 CODE:
2404 _exit (code); 3525 _exit (code);
3526
3527SV *
3528clone (Coro::State coro)
3529 CODE:
3530{
3531#if CORO_CLONE
3532 struct coro *ncoro = coro_clone (aTHX_ coro);
3533 MAGIC *mg;
3534 /* TODO: too much duplication */
3535 ncoro->hv = newHV ();
3536 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3537 mg->mg_flags |= MGf_DUP;
3538 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3539#else
3540 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3541#endif
3542}
3543 OUTPUT:
3544 RETVAL
2405 3545
2406int 3546int
2407cctx_stacksize (int new_stacksize = 0) 3547cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$ 3548 PROTOTYPE: ;$
2409 CODE: 3549 CODE:
… …
2459 eval = 1 3599 eval = 1
2460 CODE: 3600 CODE:
2461{ 3601{
2462 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3602 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2463 { 3603 {
2464 struct coro temp; 3604 struct coro *current = SvSTATE_current;
3605 struct CoroSLF slf_save;
2465 3606
2466 if (!(coro->flags & CF_RUNNING)) 3607 if (current != coro)
2467 { 3608 {
2468 PUTBACK; 3609 PUTBACK;
2469 save_perl (aTHX_ &temp); 3610 save_perl (aTHX_ current);
2470 load_perl (aTHX_ coro); 3611 load_perl (aTHX_ coro);
3612 /* the coro is most likely in an active SLF call.
3613 * while not strictly required (the code we execute is
3614 * not allowed to call any SLF functions), it's cleaner
3615 * to reinitialise the slf_frame and restore it later.
3616 * This might one day allow us to actually do SLF calls
3617 * from code executed here.
3618 */
3619 slf_save = slf_frame;
3620 slf_frame.prepare = 0;
3621 SPAGAIN;
2471 } 3622 }
2472 3623
2473 {
2474 dSP;
2475 ENTER;
2476 SAVETMPS;
2477 PUTBACK;
2478 PUSHSTACK; 3624 PUSHSTACK;
3625
2479 PUSHMARK (SP); 3626 PUSHMARK (SP);
3627 PUTBACK;
2480 3628
2481 if (ix) 3629 if (ix)
2482 eval_sv (coderef, 0); 3630 eval_sv (coderef, 0);
2483 else 3631 else
2484 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3632 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2485 3633
2486 POPSTACK; 3634 POPSTACK;
2487 SPAGAIN; 3635 SPAGAIN;
2488 FREETMPS;
2489 LEAVE;
2490 PUTBACK;
2491 }
2492 3636
2493 if (!(coro->flags & CF_RUNNING)) 3637 if (current != coro)
2494 { 3638 {
3639 PUTBACK;
3640 slf_frame = slf_save;
2495 save_perl (aTHX_ coro); 3641 save_perl (aTHX_ coro);
2496 load_perl (aTHX_ &temp); 3642 load_perl (aTHX_ current);
2497 SPAGAIN; 3643 SPAGAIN;
2498 } 3644 }
2499 } 3645 }
2500} 3646}
2501 3647
… …
2504 PROTOTYPE: $ 3650 PROTOTYPE: $
2505 ALIAS: 3651 ALIAS:
2506 is_ready = CF_READY 3652 is_ready = CF_READY
2507 is_running = CF_RUNNING 3653 is_running = CF_RUNNING
2508 is_new = CF_NEW 3654 is_new = CF_NEW
2509 is_destroyed = CF_DESTROYED 3655 is_destroyed = CF_ZOMBIE
3656 is_zombie = CF_ZOMBIE
3657 is_suspended = CF_SUSPENDED
2510 CODE: 3658 CODE:
2511 RETVAL = boolSV (coro->flags & ix); 3659 RETVAL = boolSV (coro->flags & ix);
2512 OUTPUT: 3660 OUTPUT:
2513 RETVAL 3661 RETVAL
2514 3662
2515void 3663void
2516throw (Coro::State self, SV *throw = &PL_sv_undef) 3664throw (Coro::State self, SV *exception = &PL_sv_undef)
2517 PROTOTYPE: $;$ 3665 PROTOTYPE: $;$
2518 CODE: 3666 CODE:
2519{ 3667{
2520 struct coro *current = SvSTATE_current; 3668 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw; 3669 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2522 SvREFCNT_dec (*throwp); 3670 SvREFCNT_dec (*exceptionp);
2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3671 SvGETMAGIC (exception);
3672 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2524} 3673}
2525 3674
2526void 3675void
2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3676api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$ 3677 PROTOTYPE: $;$
… …
2530 3679
2531SV * 3680SV *
2532has_cctx (Coro::State coro) 3681has_cctx (Coro::State coro)
2533 PROTOTYPE: $ 3682 PROTOTYPE: $
2534 CODE: 3683 CODE:
2535 RETVAL = boolSV (!!coro->cctx); 3684 /* maybe manage the running flag differently */
3685 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2536 OUTPUT: 3686 OUTPUT:
2537 RETVAL 3687 RETVAL
2538 3688
2539int 3689int
2540is_traced (Coro::State coro) 3690is_traced (Coro::State coro)
… …
2560 3710
2561void 3711void
2562force_cctx () 3712force_cctx ()
2563 PROTOTYPE: 3713 PROTOTYPE:
2564 CODE: 3714 CODE:
2565 SvSTATE_current->cctx->idle_sp = 0; 3715 cctx_current->idle_sp = 0;
2566 3716
2567void 3717void
2568swap_defsv (Coro::State self) 3718swap_defsv (Coro::State self)
2569 PROTOTYPE: $ 3719 PROTOTYPE: $
2570 ALIAS: 3720 ALIAS:
… …
2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3728 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2579 3729
2580 SV *tmp = *src; *src = *dst; *dst = tmp; 3730 SV *tmp = *src; *src = *dst; *dst = tmp;
2581 } 3731 }
2582 3732
3733void
3734cancel (Coro::State self)
3735 CODE:
3736 coro_state_destroy (aTHX_ self);
3737
3738SV *
3739enable_times (int enabled = enable_times)
3740 CODE:
3741{
3742 RETVAL = boolSV (enable_times);
3743
3744 if (enabled != enable_times)
3745 {
3746 enable_times = enabled;
3747
3748 coro_times_update ();
3749 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3750 }
3751}
3752 OUTPUT:
3753 RETVAL
3754
3755void
3756times (Coro::State self)
3757 PPCODE:
3758{
3759 struct coro *current = SvSTATE (coro_current);
3760
3761 if (ecb_expect_false (current == self))
3762 {
3763 coro_times_update ();
3764 coro_times_add (SvSTATE (coro_current));
3765 }
3766
3767 EXTEND (SP, 2);
3768 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3769 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3770
3771 if (ecb_expect_false (current == self))
3772 coro_times_sub (SvSTATE (coro_current));
3773}
3774
3775void
3776swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3777 CODE:
3778{
3779 struct coro *current = SvSTATE_current;
3780
3781 if (current == coro)
3782 SWAP_SVS (current);
3783
3784 if (!coro->swap_sv)
3785 coro->swap_sv = newAV ();
3786
3787 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3788 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3789
3790 if (current == coro)
3791 SWAP_SVS (current);
3792}
3793
2583 3794
2584MODULE = Coro::State PACKAGE = Coro 3795MODULE = Coro::State PACKAGE = Coro
2585 3796
2586BOOT: 3797BOOT:
2587{ 3798{
2588 int i;
2589
2590 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2591 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3799 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2592 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3800 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2593 3801 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2594 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3802 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2595 SvREADONLY_on (coro_current); 3803 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3804 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3805 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3806 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2596 3807
3808 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3809 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3810 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3811 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3812
2597 coro_stash = gv_stashpv ("Coro", TRUE); 3813 coro_stash = gv_stashpv ("Coro", TRUE);
2598 3814
2599 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3815 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2600 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3816 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2601 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3817 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2602 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3818 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2603 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3819 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2604 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3820 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2605
2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2607 coro_ready[i] = newAV ();
2608 3821
2609 { 3822 {
2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3823 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2611 3824
2612 coroapi.schedule = api_schedule; 3825 coroapi.schedule = api_schedule;
3826 coroapi.schedule_to = api_schedule_to;
2613 coroapi.cede = api_cede; 3827 coroapi.cede = api_cede;
2614 coroapi.cede_notself = api_cede_notself; 3828 coroapi.cede_notself = api_cede_notself;
2615 coroapi.ready = api_ready; 3829 coroapi.ready = api_ready;
2616 coroapi.is_ready = api_is_ready; 3830 coroapi.is_ready = api_is_ready;
2617 coroapi.nready = coro_nready; 3831 coroapi.nready = coro_nready;
2618 coroapi.current = coro_current; 3832 coroapi.current = coro_current;
2619 3833
2620 GCoroAPI = &coroapi; 3834 /*GCoroAPI = &coroapi;*/
2621 sv_setiv (sv, (IV)&coroapi); 3835 sv_setiv (sv, (IV)&coroapi);
2622 SvREADONLY_on (sv); 3836 SvREADONLY_on (sv);
2623 } 3837 }
2624} 3838}
3839
3840SV *
3841async (...)
3842 PROTOTYPE: &@
3843 CODE:
3844 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3845 api_ready (aTHX_ RETVAL);
3846 OUTPUT:
3847 RETVAL
3848
3849void
3850_destroy (Coro::State coro)
3851 CODE:
3852 /* used by the manager thread */
3853 coro_state_destroy (aTHX_ coro);
3854
3855void
3856on_destroy (Coro::State coro, SV *cb)
3857 CODE:
3858 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3859
3860void
3861join (...)
3862 CODE:
3863 CORO_EXECUTE_SLF_XS (slf_init_join);
3864
3865void
3866terminate (...)
3867 CODE:
3868 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3869
3870void
3871cancel (...)
3872 CODE:
3873 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3874
3875int
3876safe_cancel (Coro::State self, ...)
3877 C_ARGS: aTHX_ self, &ST (1), items - 1
2625 3878
2626void 3879void
2627schedule (...) 3880schedule (...)
2628 CODE: 3881 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3882 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3883
3884void
3885schedule_to (...)
3886 CODE:
3887 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3888
3889void
3890cede_to (...)
3891 CODE:
3892 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2630 3893
2631void 3894void
2632cede (...) 3895cede (...)
2633 CODE: 3896 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede); 3897 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2648void 3911void
2649_set_readyhook (SV *hook) 3912_set_readyhook (SV *hook)
2650 PROTOTYPE: $ 3913 PROTOTYPE: $
2651 CODE: 3914 CODE:
2652 SvREFCNT_dec (coro_readyhook); 3915 SvREFCNT_dec (coro_readyhook);
3916 SvGETMAGIC (hook);
3917 if (SvOK (hook))
3918 {
2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3919 coro_readyhook = newSVsv (hook);
3920 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3921 }
3922 else
3923 {
3924 coro_readyhook = 0;
3925 CORO_READYHOOK = 0;
3926 }
2654 3927
2655int 3928int
2656prio (Coro::State coro, int newprio = 0) 3929prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$ 3930 PROTOTYPE: $;$
2658 ALIAS: 3931 ALIAS:
… …
2664 if (items > 1) 3937 if (items > 1)
2665 { 3938 {
2666 if (ix) 3939 if (ix)
2667 newprio = coro->prio - newprio; 3940 newprio = coro->prio - newprio;
2668 3941
2669 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3942 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2670 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3943 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2671 3944
2672 coro->prio = newprio; 3945 coro->prio = newprio;
2673 } 3946 }
2674} 3947}
2675 OUTPUT: 3948 OUTPUT:
… …
2689 CODE: 3962 CODE:
2690 RETVAL = coro_nready; 3963 RETVAL = coro_nready;
2691 OUTPUT: 3964 OUTPUT:
2692 RETVAL 3965 RETVAL
2693 3966
2694# for async_pool speedup
2695void 3967void
2696_pool_1 (SV *cb) 3968suspend (Coro::State self)
3969 PROTOTYPE: $
2697 CODE: 3970 CODE:
2698{ 3971 self->flags |= CF_SUSPENDED;
2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2701 AV *defav = GvAV (PL_defgv);
2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2703 AV *invoke_av;
2704 int i, len;
2705 3972
2706 if (!invoke) 3973void
3974resume (Coro::State self)
3975 PROTOTYPE: $
3976 CODE:
3977 self->flags &= ~CF_SUSPENDED;
3978
3979void
3980_pool_handler (...)
3981 CODE:
3982 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3983
3984void
3985async_pool (SV *cv, ...)
3986 PROTOTYPE: &@
3987 PPCODE:
3988{
3989 HV *hv = (HV *)av_pop (av_async_pool);
3990 AV *av = newAV ();
3991 SV *cb = ST (0);
3992 int i;
3993
3994 av_extend (av, items - 2);
3995 for (i = 1; i < items; ++i)
3996 av_push (av, SvREFCNT_inc_NN (ST (i)));
3997
3998 if ((SV *)hv == &PL_sv_undef)
2707 { 3999 {
2708 SV *old = PL_diehook; 4000 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2709 PL_diehook = 0; 4001 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2710 SvREFCNT_dec (old); 4002 SvREFCNT_dec (sv);
2711 croak ("\3async_pool terminate\2\n");
2712 } 4003 }
2713 4004
2714 SvREFCNT_dec (coro->saved_deffh);
2715 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2716
2717 hv_store (hv, "desc", sizeof ("desc") - 1,
2718 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2719
2720 invoke_av = (AV *)SvRV (invoke);
2721 len = av_len (invoke_av);
2722
2723 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2724
2725 if (len > 0)
2726 { 4005 {
2727 av_fill (defav, len - 1); 4006 struct coro *coro = SvSTATE_hv (hv);
2728 for (i = 0; i < len; ++i) 4007
2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4008 assert (!coro->invoke_cb);
4009 assert (!coro->invoke_av);
4010 coro->invoke_cb = SvREFCNT_inc (cb);
4011 coro->invoke_av = av;
2730 } 4012 }
4013
4014 api_ready (aTHX_ (SV *)hv);
4015
4016 if (GIMME_V != G_VOID)
4017 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4018 else
4019 SvREFCNT_dec (hv);
2731} 4020}
4021
4022SV *
4023rouse_cb ()
4024 PROTOTYPE:
4025 CODE:
4026 RETVAL = coro_new_rouse_cb (aTHX);
4027 OUTPUT:
4028 RETVAL
2732 4029
2733void 4030void
2734_pool_2 (SV *cb) 4031rouse_wait (...)
4032 PROTOTYPE: ;$
4033 PPCODE:
4034 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4035
4036void
4037on_enter (SV *block)
4038 ALIAS:
4039 on_leave = 1
4040 PROTOTYPE: &
2735 CODE: 4041 CODE:
2736{ 4042{
2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv); 4043 struct coro *coro = SvSTATE_current;
4044 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2739 4045
2740 sv_setsv (cb, &PL_sv_undef); 4046 block = s_get_cv_croak (block);
2741 4047
2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4048 if (!*avp)
2743 coro->saved_deffh = 0; 4049 *avp = newAV ();
2744 4050
2745 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4051 av_push (*avp, SvREFCNT_inc (block));
2746 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2747 {
2748 SV *old = PL_diehook;
2749 PL_diehook = 0;
2750 SvREFCNT_dec (old);
2751 croak ("\3async_pool terminate\2\n");
2752 }
2753 4052
2754 av_clear (GvAV (PL_defgv)); 4053 if (!ix)
2755 hv_store (hv, "desc", sizeof ("desc") - 1, 4054 on_enterleave_call (aTHX_ block);
2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2757 4055
2758 coro->prio = 0; 4056 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 4057 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4058 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2761 api_trace (aTHX_ coro_current, 0);
2762
2763 av_push (av_async_pool, newSVsv (coro_current));
2764} 4059}
2765 4060
2766 4061
2767MODULE = Coro::State PACKAGE = PerlIO::cede 4062MODULE = Coro::State PACKAGE = PerlIO::cede
2768 4063
… …
2771 4066
2772 4067
2773MODULE = Coro::State PACKAGE = Coro::Semaphore 4068MODULE = Coro::State PACKAGE = Coro::Semaphore
2774 4069
2775SV * 4070SV *
2776new (SV *klass, SV *count_ = 0) 4071new (SV *klass, SV *count = 0)
2777 CODE: 4072 CODE:
2778{ 4073{
2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4074 int semcnt = 1;
2780 AV *av = newAV (); 4075
2781 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4076 if (count)
2782 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4077 {
4078 SvGETMAGIC (count);
4079
4080 if (SvOK (count))
4081 semcnt = SvIV (count);
4082 }
4083
4084 RETVAL = sv_bless (
4085 coro_waitarray_new (aTHX_ semcnt),
4086 GvSTASH (CvGV (cv))
4087 );
2783} 4088}
4089 OUTPUT:
4090 RETVAL
4091
4092# helper for Coro::Channel and others
4093SV *
4094_alloc (int count)
4095 CODE:
4096 RETVAL = coro_waitarray_new (aTHX_ count);
2784 OUTPUT: 4097 OUTPUT:
2785 RETVAL 4098 RETVAL
2786 4099
2787SV * 4100SV *
2788count (SV *self) 4101count (SV *self)
… …
2797 adjust = 1 4110 adjust = 1
2798 CODE: 4111 CODE:
2799 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4112 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2800 4113
2801void 4114void
2802down (SV *self) 4115down (...)
2803 CODE: 4116 CODE:
2804 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4117 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4118
4119void
4120wait (...)
4121 CODE:
4122 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2805 4123
2806void 4124void
2807try (SV *self) 4125try (SV *self)
2808 PPCODE: 4126 PPCODE:
2809{ 4127{
… …
2821 XSRETURN_NO; 4139 XSRETURN_NO;
2822} 4140}
2823 4141
2824void 4142void
2825waiters (SV *self) 4143waiters (SV *self)
2826 CODE: 4144 PPCODE:
2827{ 4145{
2828 AV *av = (AV *)SvRV (self); 4146 AV *av = (AV *)SvRV (self);
4147 int wcount = AvFILLp (av) + 1 - 1;
2829 4148
2830 if (GIMME_V == G_SCALAR) 4149 if (GIMME_V == G_SCALAR)
2831 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4150 XPUSHs (sv_2mortal (newSViv (wcount)));
2832 else 4151 else
2833 { 4152 {
2834 int i; 4153 int i;
2835 EXTEND (SP, AvFILLp (av) + 1 - 1); 4154 EXTEND (SP, wcount);
2836 for (i = 1; i <= AvFILLp (av); ++i) 4155 for (i = 1; i <= wcount; ++i)
2837 PUSHs (newSVsv (AvARRAY (av)[i])); 4156 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2838 } 4157 }
2839} 4158}
4159
4160MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4161
4162void
4163_may_delete (SV *sem, int count, unsigned int extra_refs)
4164 PPCODE:
4165{
4166 AV *av = (AV *)SvRV (sem);
4167
4168 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4169 && AvFILLp (av) == 0 /* no waiters, just count */
4170 && SvIV (AvARRAY (av)[0]) == count)
4171 XSRETURN_YES;
4172
4173 XSRETURN_NO;
4174}
4175
4176MODULE = Coro::State PACKAGE = Coro::Signal
4177
4178SV *
4179new (SV *klass)
4180 CODE:
4181 RETVAL = sv_bless (
4182 coro_waitarray_new (aTHX_ 0),
4183 GvSTASH (CvGV (cv))
4184 );
4185 OUTPUT:
4186 RETVAL
4187
4188void
4189wait (...)
4190 CODE:
4191 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4192
4193void
4194broadcast (SV *self)
4195 CODE:
4196{
4197 AV *av = (AV *)SvRV (self);
4198 coro_signal_wake (aTHX_ av, AvFILLp (av));
4199}
4200
4201void
4202send (SV *self)
4203 CODE:
4204{
4205 AV *av = (AV *)SvRV (self);
4206
4207 if (AvFILLp (av))
4208 coro_signal_wake (aTHX_ av, 1);
4209 else
4210 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4211}
4212
4213IV
4214awaited (SV *self)
4215 CODE:
4216 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4217 OUTPUT:
4218 RETVAL
2840 4219
2841 4220
2842MODULE = Coro::State PACKAGE = Coro::AnyEvent 4221MODULE = Coro::State PACKAGE = Coro::AnyEvent
2843 4222
2844BOOT: 4223BOOT:
… …
2859 sv_setsv (sv_activity, &PL_sv_undef); 4238 sv_setsv (sv_activity, &PL_sv_undef);
2860 if (coro_nready >= incede) 4239 if (coro_nready >= incede)
2861 { 4240 {
2862 PUSHMARK (SP); 4241 PUSHMARK (SP);
2863 PUTBACK; 4242 PUTBACK;
2864 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4243 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2865 SPAGAIN;
2866 } 4244 }
2867 4245
2868 --incede; 4246 --incede;
2869} 4247}
2870 4248
… …
2873 4251
2874void 4252void
2875_register (char *target, char *proto, SV *req) 4253_register (char *target, char *proto, SV *req)
2876 CODE: 4254 CODE:
2877{ 4255{
2878 HV *st; 4256 SV *req_cv = s_get_cv_croak (req);
2879 GV *gvp;
2880 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2881 /* newXSproto doesn't return the CV on 5.8 */ 4257 /* newXSproto doesn't return the CV on 5.8 */
2882 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4258 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2883 sv_setpv ((SV *)slf_cv, proto); 4259 sv_setpv ((SV *)slf_cv, proto);
2884 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4260 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2885} 4261}
2886 4262
4263MODULE = Coro::State PACKAGE = Coro::Select
4264
4265void
4266patch_pp_sselect ()
4267 CODE:
4268 if (!coro_old_pp_sselect)
4269 {
4270 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4271 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4272 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4273 }
4274
4275void
4276unpatch_pp_sselect ()
4277 CODE:
4278 if (coro_old_pp_sselect)
4279 {
4280 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4281 coro_old_pp_sselect = 0;
4282 }
4283

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